Tesis: "Connected application"

1

Wu, Yiwei. "Connected Dominating Set Construction and Application in Wireless Sensor Networks". Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/cs_diss/45.

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Wireless sensor networks (WSNs) are now widely used in many applications. Connected Dominating Set (CDS) based routing which is one kind of hierarchical methods has received more attention to reduce routing overhead. The concept of k-connected m-dominating sets (kmCDS) is used to provide fault tolerance and routing flexibility. In this thesis, we first consider how to construct a CDS in WSNs. After that, centralized and distributed algorithms are proposed to construct a kmCDS. Moreover, we introduce some basic ideas of how to use CDS in other potential applications such as partial coverage and data dissemination in WSNs.

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2

Dabboussi, Abdallah. "Dependability approaches for mobile environment : Application on connected autonomous vehicles". Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCA029.

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Les véhicules autonomes et connectés (VAC) doivent avoir une exigence de fiabilité et de sécurité adéquate dans un environnement incertain aux circonstances complexes. La technologie des capteurs, les actionneurs et l'intelligence artificielle (IA) améliorent constamment leurs performances, ce qui permet un développement continu des véhicules autonomes et une automatisation accrue de la tâche de conduite. Les VAC présentent de nombreux avantages dans la vie humaine, tels que l’augmentation de la sécurité routière, la réduction de la pollution et la fourniture d’une mobilité autonome aux non-conducteurs. Cependant, ces composants avancés créent un nouvel ensemble de défis en matière de sécurité et de fiabilité. Il est donc nécessaire d’évaluer ces technologies avant leur mise en œuvre.Nous étudions dans cette thèse la fiabilité du VAC dans son ensemble, en nous concentrant sur les capteurs et le système de communication. Pour cela, une analyse fonctionnelle a été réalisée pour le système VAC. Notre approche scientifique pour l'analyse de la fiabilité du VAC a été structurée avec des méthodes combinant des approches quantitatives et qualitatives (telles que l'analyse fonctionnelle interne et externe, l'analyse préliminaire des risques (APR) et l'analyse des modes de défaillance, de leurs effets et de leur criticité (AMDEC), etc. Afin de prouver nos résultats, une simulation a été réalisée à l'aide de la probabilité d'analyse d'arbre de défaillance (ADD) et elle a été réalisée pour valider l'approche proposée. Les données (taux d'échec) utilisées proviennent d'une base de données professionnelle concernant le type de composants présentés dans le système. À partir de ces données, un modèle probabiliste de dégradation a été proposé. Le calcul de probabilité a été effectué par rapport à un moment d'utilisation de référence. Par la suite, une analyse de sensibilité a été suggérée concernant les paramètres de fiabilité et des propositions de restructuration ont été élaborées pour les composants.CAV fournit des services de communication entre véhicules : véhicules à véhicules (V2V) ou avec infrastructures côté rue : véhicules à infrastructures (V2I). La technologie des “Communications dédiées à courte portée” (DSRC = Dedicated Short Range Communications) utilise plusieurs canaux pour fournir une variété d'applications de sécurité. Les applications de sécurité nécessitent des transmissions appropriées et fiables, tandis que les applications non liées à la sécurité exigent des performances et une vitesse élevée. Aujourd’hui, la diffusion de messages de sécurité de base (Basic safety message, BSM) est l’un des services fondamentaux des véhicules connectés. Pour cela, un modèle analytique destiné à évaluer la fiabilité des services de diffusion V2V relatifs à la sécurité basée sur IEEE 802.11 dans le système DSRC sur autoroute a été proposé. Enfin, une amélioration du modèle proposé a été faite afin d'accroître la fiabilité de la connexion V2V, en tenant compte de nombreux facteurs tels que la portée de transmission, la densité du véhicule, la distance de sécurité sur l'autoroute, le taux d'erreur de paquets, l'influence de bruit et les taux de défaillants pour les équipements de communications.L'évaluation de ces problèmes conduit à une analyse de sensibilité liée aux paramètres de fiabilité, ce qui contribue à davantage d'innovation dans les domaines de l'ingénierie automobile
Connected and Autonomous vehicles (CAV) must have adequate reliability and safety requirements in uncertain environments with complex circumstances. Sensor technology, actuators and artificial intelligence (AI) are constantly and rapidly evolving, thus enabling further development of self-driving vehicles, and increasing the automation of driving. CAV shows many benefits in human life such as increasing road safety, reducing pollution, and providing independent mobility to non-drivers. However, these advanced components create a new set of challenges concerning safety and dependability. Hence, it is necessary to evaluate these technologies before implementation.We study in this thesis the reliability of CAV as a whole, focusing on sensors and the communication system. For that purpose, a functional analysis was done for the CAV system.Our scientific approach for the analyzing the CAV reliability, was structured with methods that combine quantitative and qualitative approaches such as functional analysis for both internal and external, Preliminary Risk Analysis (PRA), and failure modes and effects criticality analysis (FMECA), in addition to other analysis techniques.To prove our results, a simulation was done using the Fault Tree analysis (FTA) probability in order to validate the proposed approach. The data (Failure ratio) used were from a professional database related to the type of components presented in the system. Using this data, a probabilistic model of degradation was proposed. A probability calculation was performed in relation to a reference time of use. Thereafter a sensitivity analysis was suggested concerning the reliability parameters and redesign proposals developed for the components.CAV provide several communication models: vehicles to vehicle (V2V), or with Road Side Infrastructure: vehicle to infrastructure (V2I). Dedicated Short Range Communication (DSRC) employs a multichannel approach to cater for a variety of safety and non-safety applications. Safety applications necessitate appropriate and reliable transmissions, while non-safety applications require performance and high speed. Broadcasting of Basic Safety Messages (BSM) is one of the fundamental services in today’s connected vehicles. For that, an analytical model to evaluate the reliability of IEEE 802.11 based V2V safety-related broadcast services in DSRC system on highway was proposed. Finally, an enhancement on the proposed model was made in order to increase the reliability of the V2V connection, taking into consideration many factors such as transmission range, vehicle density, and safety headway distance on highway, packet error rate, noise influence, and failures rates of communication equipment.Evaluating these problems leads to a sensitivity analysis related to reliability parameters, which helps further innovation in CAV and automobile engineering

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3

PAREJO, MATOS ANTONIO. "Application of Intelligent Techniques for Optimal Management of Weakly Connected Microgrids". Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1081257.

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La decarbonizzazione e la mitigazione del cambiamento climatico sono diventate una priorità per molti Paesi e governi. Uno dei principali strumenti per realizzare questi obiettivi è la crescita delle fonti di generazione rinnovabili nel sistema elettrico, ma la loro inclusione costituisce una grande sfida per il funzionamento della rete a causa della loro alta variabilità e il loro comportamento stocastico. In questo contesto, la gestione del sistema elettrico e delle microgrid può essere trattata come un problema di ottimizzazione in cui le risorse vengono fatte funzionare con l'obiettivo di minimizzare la funzione di costo. Questa funzione di costo e le restrizioni operative corrispondenti dipendono da ogni situazione specifica, ad esempio, da quali sono i requisiti di consumo di energia, quanto è debole la connessione con la rete elettrica e quanto sono critici i carichi da alimentare nella zona. In questo senso, nonostante la grande varietà di approcci di ottimizzazione, questi hanno in comune l'importanza di contare su un sistema di previsione di alta qualità per prevedere le incertezze della microgrid (o rete) da far funzionare. I principali approcci esistenti per prevedere le incertezze sono la previsione deterministica e stocastica (che in molti casi è anche chiamata probabilistica). Considerando l'importanza dei sistemi di previsione per eseguire l'ottimizzazione delle microgrid e, in generale, delle reti elettriche, questa tesi di dottorato si concentra sulla progettazione di un modello di lavoro di previsione orientato alla microgrid che include una vasta gamma di approcci di previsione, che rende possibile la sua integrazione con altre applicazioni, ad esempio, sistemi di ottimizzazione della gestione dell'energia. Questo modello di lavoro include diversi metodi deterministici e stocastici ed è in grado di gestire l'addestramento e la selezione dei modelli per eseguire la previsione secondo il tipo di rappresentazione dell'incertezza che è richiesto in ogni caso.
The decarbonization and the climate change mitigation have become a priority for many countries and governments. One of the main tools for accomplishing these objectives is the growth of renewable generation sources in the power system, but their inclusion constitutes a great challenge for the network operation due to their high variability and their stochastic behavior. In this context, the management of the power system and microgrids can be treated as optimization problems in which the resources are operated with the aim of minimizing the cost function. This cost function and the corresponding operative restrictions depend on each specific situation, for example, on which are the power consumption requirements, how weak is the connection with the power grid, and how critical are the loads to be fed in the zone. In this sense, despite the large variety of optimization approaches, these have in common the importance of counting on a high-quality forecasting system for predicting the uncertainties of the microgrid (or network) to operate. The main existing approaches for predicting the uncertainties are deterministic and stochastic (which in many cases is also called probabilistic) forecasting. Considering the importance of forecasting systems for performing the optimization of microgrids and, in general, power networks, this doctoral thesis is focused on the design of a microgrid-oriented forecasting framework that includes a wide range of forecasting approaches, which makes possible its integration with other applications, for example, energy management optimization systems. This framework includes several deterministic and stochastic methods and is able to handle the training and selection of the models for performing the forecast according to the type of uncertainty representation that is required in each case.
La descarbonización y la reducción del cambio climático se han convertido en una prioridad para muchos países y gobiernos. Una de las principales herramientas para lograr estos objetivos es aumentar el número de fuentes de generación renovables en el sistema eléctrico, pero su inclusión constituye un gran reto debido a su alta variabilidad y su comportamiento estocástico. En este contexto, la gestión del sistema eléctrico y de las microrredes puede tratarse como problemas de optimización en los que los recursos se operan con el objetivo de minimizar la función de coste. Esta función de coste y las correspondientes restricciones operativas dependen de cada situación concreta, por ejemplo, de cuáles sean las necesidades de consumo de energía, de lo débil que sea la conexión con la red eléctrica y de lo críticas que sean las cargas a alimentar en la zona. En este sentido, a pesar de la gran variedad de enfoques de optimización, éstos tienen en común la importancia de contar con un sistema de predicción de alta calidad para predecir las incertidumbres de la microrred (o red) a optimizar. Los principales enfoques existentes para predecir las incertidumbres son la predicción determinista y la estocástica (que en muchos casos también se denomina probabilística). Teniendo en cuenta la importancia de los sistemas de predicción para realizar la optimización de las microrredes y, en general, de las redes eléctricas, esta tesis doctoral se centra en el diseño de un marco de trabajo para predicción orientado a las microrredes que incluye diversos enfoques para realizar la predicción, lo que hace posible su integración con otras aplicaciones como, por ejemplo, sistemas de optimización de gestión energética. Este marco de trabajo incluye varios métodos deterministas y estocásticos y es capaz de gestionar el entrenamiento y la selección de los modelos para realizar la predicción según el tipo de representación de la incertidumbre que se requiera en cada caso.

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4

Konstantaras, Dimitrios y Mustafa Tahir. "Securing Network Connected Applications with Proposed Security Models". Thesis, Växjö University, School of Mathematics and Systems Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-2022.

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In today’s society, serious organizations need protection against both internal and external attacks. There are many different technologies available that organizations can incorporate into their organization in order to enhance security for their networking applications. Unfortunately, security is way to often considered as an afterthought and therefore implemented as an external part of the applications. This is usually performed by introducing general security models and technologies.

However, an already developed, well structured and considered security approach – with proper implementation of security services and mechanisms – different security models can be used to apply security

within the security perimeter of an organization. It can range from built into the application to the edge of a private network, e.g. an appliance. No matter the choice, the involved people must possess security expertise to deploy the proposed security models in this paper, that have the soul purpose to secure applications.

By using the Recommendation X.800 as a comparison framework, the proposed models will be analyzed in detail and evaluated of how they provide the security services concerned in X.800. By reasoning about what security services that ought to be implemented in order to prevent or detect diverse security attacks, the organization needs to carry out a security plan and have a common understanding of the deﬁned security policies.

An interesting ﬁnding during our work was that, using a methodology that leads to low KLOC-values results in high security, though low KLOC-values and high security go hand-in-hand.

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5

Arikatla, Jhansi R. "VIBRATIONS OF SERIES OF BEAMS CONNECTED BY FLEXIBLE NONLINEAR LAYERS WITH APPLICATION TO CARBON NANOTUBES". University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1164662552.

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6

Rao, Narasimha D. (Narasimha Desirazu). "A capacity planning methodology for rural India : an application to grid-connected photovoltaics". Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38766.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
Includes bibliographical references (leaves 111-113).
by Narasimha D. Rao.
M.S.

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7

Hussain, Saed. "Fault tolerant flight control : an application of the fully connected cascade neural network". Thesis, University of Central Lancashire, 2015. http://clok.uclan.ac.uk/12123/.

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The endurance of an aircraft can be increased in the presence of failures by utilising flight control systems that are tolerant to failures. Such systems are known as fault tolerant flight control systems (FTFCS). FTFCS can be implemented by developing failure detection, identification and accommodation (FDIA) schemes. Two of the major types of failures in an aircraft system are the sensor and actuator failures. In this research, a sensor failure detection, identification and accommodation (SFDIA); and an actuator failure detection, identification and accommodation (AFDIA) schemes are developed. These schemes are developed using the artificial neural network (ANN). A number of techniques can be found in the literature that address FDIA in aircraft systems. These techniques are, for example, Kalman filters, fuzzy logic and ANN. This research uses the fully connected cascade (FCC) neural network (NN) for the development of the SFDIA and AFDIA schemes. Based on the study presented in the literature, this NN architecture is compact and efficient in comparison to the multi-layer perceptron (MLP) NN, which is a popular choice for NN applications. This is the first reported instance of the use of the FCC NN for fault tolerance applications, especially in the aerospace domain. For this research, the X-Plane 9 flight simulator is used for data collection and as a test bed. This simulator is well known for its realistic simulations and is certified by the Federal Aviation Administration (FAA) for pilot training. The developed SFDIA scheme adds endurance to an aircraft in the presence of failures in the aircraft pitch, roll and yaw rate gyro sensors. The SFDIA scheme is able to replace a faulty gyro sensor with a FCC NN based estimate, with as few as 2 neurons. In total, 105 failure experiments were conducted, out of which only 1 went undetected. In the developed AFDIA scheme, a FCC NN based roll controller is employed, which uses just 5 neurons. This controller can adapt on-line to the post failure dynamics of the aircraft following a 66\% loss of wing surface. With 66\% of the wing surface missing, the NN based roll controller is able to maintain flight. This is a remarkable display of endurance by the AFDIA scheme, following such a severe failure. The results presented in this research validate the use of FCC NNs for SFDIA and AFDIA applications.

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8

Lane, Emily M. "Wave-current interactions in coastal waters and their application to shore-connected bars". Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280520.

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A multi-scale asymptotic theory is derived for the evolution and interaction of currents and surface gravity waves in water of finite depth, under conditions typical of coastal shelf waters outside the surf zone. The theory provides a practical and useful model with which wave-current coupling may be explored without the necessity of resolving features of the flow on space and time scales of the primary gravity-wave oscillations. The essential nature of the dynamical interaction is currents modulating the slowly evolving phase of the wave field and waves providing both phase-averaged forcing of long, infra-gravity waves and wave-averaged vortex forces for the low-frequency current and sea-level evolution equations. Analogous relations are derived for material tracers and density stratification that include phase-averaged, Stokes-drift advection, including by a vertical Stokes pseudo-velocity that is the incompressible companion to the horizontal Stokes velocity. This theory is used to study the effect of waves on the evolution of large-scale erodible beds. In particular, the formation of certain up-current rotated, shore-connected bars is investigated. It is hypothesized that these bars form due to an instability of the bottom topography in the presence of a storm driven flow. This hypothesis is reviewed in the light of the presence of both waves and currents. It is shown that waves can significantly affect the instability. The effects of different wave parameters are investigated. Steady flow and boundary condition assumptions are also examined.

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9

White, James Angus. "Development and evaluation of a socially connected mobile application to increase fish consumption". Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/1925.

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Fish consumption is protective against many chronic diseases. A complex intervention approach was used to guide formative research, identifying barriers to consumption. This in turn guided the development of a socially connected mobile application that was evaluated in an exploratory trial. While overall fish consumption did not differ significantly between intervention and control groups, some patterns of application use were associated with increased consumption. Implications are discussed for the development and evaluation of mHealth interventions.

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10

Du, Yang. "Modeling and analysis of single-phase two-stage inverter for grid-connected photovoltaic application". Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/9334.

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In order to extract the maximum amount of power from the PV modules and convert it into an appropriate form for grid integration, a power electronics interface is needed. This thesis focuses on analysis and modeling of the single-phase two-stage inverter for grid-connected PV application with special attention given to the harmonic issues. A DC/DC battery-integrated boost converter can serve as the front end in a two-stage PV inverter configuration. A steady-state analysis for this new type of converter is carried out. An application of this converter in distributed Maximum Power Point Tracking (MPPT) architecture is proposed and compared with the conventional boost converter. By adding energy storage devices, it has the potential to compensate for the intermittent attribute of the PV generators. It also yields a more stabilized DC-link voltage in the distributed MPPT application. This thesis also analyzes the harmonic distortions generated from a PV inverter, which mainly relate to the DC/AC stage of the PV inverter. The field measurements are carried out at the CSIRO micro-grid. The high total harmonic distortion phenomenon is found when the PV inverters operate at light load condition. The conventional model of a PV inverter does not contain any harmonic information. A linear model for the PV inverter is modified to analyze the harmonic formation process. The causes of harmonics are summarized for the PV inverter operating at different power levels. The constant DC-link voltage assumption is not necessarily true for the two-stage PV inverter. The model of the grid-connected PV inverter with feedback control becomes time-varying with consideration for the DC-link voltage ripple. A series of odd harmonics is identified to be caused by this double-line frequency DC-link voltage ripple. The transfer function cannot be derived for this model. It is a challenge to calculate the exact harmonic amplitudes. The closed-form solution for this time-varying model is derived based on an idea which is similar to the harmonic balance method. A guideline is provided to select the minimum size of capacitor for the DC-link without sacrificing the power quality. Simulation and experimental results are provided to verify the aforementioned analysis results. In addition, some suggestions for future work are given.

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11

Zinn, Brendan Anderson 1977. "Mass transfer and dispersion processes in connected conductivity structures : simulation, visualization, delineation and application". Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29584.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2003.
Includes bibliographical references (p. 161-167).
This thesis focuses on mass transfer behavior, i.e., tailing, in solute transport, and on hydraulic conductivity heterogeneity. Macrodispersive theory, generally used to incorporate heterogeneity into solute transport, does not account for this tailing and makes assumptions about the structural characteristics of the heterogeneity, specifically that the field is multivariate gaussian. We move away from the multigaussian assumption to focus on the concept of connected pathways of high or low conductivity. We first motivate the importance of connected extreme conductivity values through the numerical creation of two-dimensional conductivity fields with nearly identical univariate conductivity distributions and covariances, but with varying connectedness of extreme values. We simulated flow and transport through these fields, using a particle tracking approach that incorporates advection and diffusion. We demonstrate that connectedness impacts flow by influencing the effective conductivity of the field, and connected high conductivity fields with relatively high variance displayed mass transfer behavior, driven by both advective and diffusive processes. We then conducted laboratory experiments to study three flow situations demonstrated by the first part of the work - classic dispersion, diffusion-driven mass transfer, and advection-driven mass transfer. By simultaneously measuring outflow concentration and the spatial distribution of solute in the tank, we demonstrate different breakthrough characteristics driven by different small-scale processes. Outflow concentrations match excellently with established models in the case of diffusive mass transfer and dispersion, and relatively well with a model we developed for the advective mass transfer scenario.
(cont.) We generalized the experimental results by creating connected binary conductivity fields, delineating the conditions of connectedness and conductivity contrast that drive the various transport. Finally, we examine the implications of our earlier work, particularly the interplay between advection and diffusion in mass transfer. The presence of both processes creates late-time concentrations that are complex, but partially dependant on hydraulic gradients. We apply this to a hypothetical scenario of a pump-and-treat remediation - the existence of advective mass transfer creates situations in which solute mobilization can be sped up by pumping rate choices, and the complex interaction between mass transfer processes leads to more complex pumping rate decisions.
by Brendan Anderson Zinn.
Ph.D.

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12

Loulou, Hassan. "Verifying Design Properties at Runtime Using an MDE-Based Approach Models @Run.Time Verification-Application to Autonomous Connected Vehicles". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS405.

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Un véhicule autonome et connecté (ACV – pour Autonomous Connected Vehicle ) est un système cyber-physique où le monde réel et l’espace numérique virtuel se fusionnent. Ce type de véhicule requiert un processus de validation rigoureuse commençant à la phase de conception et se poursuivant même après le déploiement du logiciel. Un nouveau paradigme est apparu pour le monitorat continu des exécutions des logiciels afin d'autoriser des adaptations automatiquement en temps réel, systématiquement lors d’une détection de changement dans l'environnement d'exécution, d’une panne ou d’un bug. Ce paradigme s’intitule : « Models@Run.time ». Cette thèse s’inscrit dans le cadre des ACVs et plus particulièrement dans le contexte des véhicules qui collaborent et qui partagent leurs données d’une manière sécurisée. Plusieurs approches de modélisation sont déjà utilisées pour exprimer les exigences relatives au contrôle d'accès afin d’imposer des politiques de sécurité. Toutefois, leurs outils de validation ne tiennent pas compte les impacts de l'interaction entre les exigences fonctionnelles et les exigences de sécurité. Cette interaction peut conduire à des violations de sécurité inattendues lors de l'exécution du système ou lors des éventuelles adaptations à l’exécution. En outre, l’estimation en temps réel de l’état de trafic utilisant des données de type crowdsourcing pourrait être utilisée pour les adaptations aux modèles de coopération des AVCs. Cette approche n'a pas encore été suffisamment étudiée dans la littérature. Pour pallier à ces limitations, de nombreuses questions doivent être abordées:• L'évolution des exigences fonctionnelles du système doit être prise en compte lors de la validation des politiques de sécurité ainsi que les scénarios d'attaque doivent être générés automatiquement.• Une approche pour concevoir et détecter automatiquement les anti-patrons (antipatterns) de sécurité doit être développée. En outre, de nouvelles reconfigurations pour les politiques de contrôle d'accès doivent également être identifiées, validées et déployées efficacement à l'exécution.• Les ACVs doivent observer et analyser leur environnement, qui contient plusieurs flux de données dite massives (Big Data) pour proposer de nouveaux modèles de coopération, en temps réel.Dans cette thèse, une approche pour la surveillance de l'environnement des ACVs est proposée. L’approche permet de valider les politiques de contrôle d'accès et de les reconfigurer en toute sécurité. La contribution de cette thèse consiste à:• Guider les Model Checkers de sécurité pour trouver automatiquement les scénarios d'attaque dès la phase de conception.• Concevoir des anti-patterns pour guider le processus de validation, et développer un algorithme pour les détecter automatiquement lors des reconfigurations des modèles.• Construire une approche pour surveiller en temps réel les flux de données dynamiques afin de proposer des adaptations de la politique d'accès lors de l'exécution.L’approche proposée a été validée en utilisant plusieurs exemples liés aux ACVs, et les résultats des expérimentations prouvent la faisabilité de cette approche
Autonomous Connected Vehicles (ACVs) are Cyber-physical systems (CPS) where the computationalworld and the real one meet. These systems require a rigorous validation processthat starts at design phase and continues after the software deployment. Models@Runtimehas appeared as a new paradigm for continuously monitoring software systems execution inorder to enable adaptations whenever a change, a failure or a bug is introduced in the executionenvironment. In this thesis, we are going to tackle ACVs environment where vehicles tries tocollaborate and share their data in a secure manner.Different modeling approaches are already used for expressing access control requirementsin order to impose security policies. However, their validation tools do not consider the impactsof the interaction between the functional and the security requirements. This interaction canlead to unexpected security breaches during the system execution and its potential runtimeadaptations. Also, the real-time prediction of traffic states using crowd sourcing data could beuseful for proposition adaptations to AVCs cooperation models. Nevertheless, it has not beensufficiently studied yet. To overcome these limitations, many issues should be addressed:• The evolution of the system functional part must be considered during the validation ofthe security policy and attack scenarios must be generated automatically.• An approach for designing and automatically detecting security anti-patterns might bedeveloped. Furthermore, new reconfigurations for access control policies also must befound, validated and deployed efficiently at runtime.• ACVs need to observe and analyze their complex environment, containing big-datastreams to recommend new cooperation models, in near real-time.In this thesis, we build an approach for sensing the ACVs environment, validating its accesscontrol models and securely reconfiguring it on the fly. We cover three aspects:• We propose an approach for guiding security models checkers to find the attack scenariosat design time automatically.• We design anti-patterns to guide the validation process. Then, we develop an algorithmto detect them automatically during models reconfigurations. Also, we design a mechanismfor reconfiguring the access control model and we develop a lightweight modularframework for an efficient deployment of new reconfigurations.• We build an approach for the real-time monitoring of dynamic data streams to proposeadaptations for the access policy at runtime.Our proposed approach was validated using several examples related o ACVs. the results ofour experimentations prove the feasibility of this approach

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13

Stiefenhofer, Pascal Christian. "Stability analysis of non-smooth dynamical systems with an application to biomechanics". Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/61481/.

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This thesis discusses a two dimensional non-smooth dynamical system described by an autonomous ordinary differential equation. The right hand side of the differential equation is assumed to be discontinuous. We provide a local theory of existence, uniqueness and exponential asymptotic stability and state a formula for the basin of attraction. Our conditions are sufficient. Thetheory generalizes smooth dynamical systems theory by providing contraction conditions for two nearby trajectories at a jump. Such conditions have only previously been studied for a two dimensional nonautonomous differential equation. We provide an example of the theory developed in this thesis and show that we can determine stability of a periodic orbit without explicitly calculating it. This is the main advantage of our theory. Our conditions require to define a metric. This however, can turn out to be a difficult task, and at present, we do not have a method for finding such a metric systematically. The final part of this thesis considers an application of a nonsmooth dynamical system to biomechanics. We model an elderly person stepping over an obstacle. Our model assumes stiff legs, and suggests a gait strategy to overcome an obstacle. This work is in collaboration with Professor Wagner's research group at Institute for Sport Science at the University of Mϋnster. However, we only present work developed independently in this thesis.

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Gupta, Nitin. "HOLOMORPHIC EMBEDDED LOAD-FLOW METHOD'S APPLICATION ON THREE-PHASE DISTRIBUTION SYSTEM WITH UNBALANCED WYE-CONNECTED LOADS". Cleveland State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=csu1624146858767491.

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SHELLEY, MICHAEL JOHN. "THE APPLICATION OF BOUNDARY INTEGRAL TECHNIQUES TO MULTIPLY CONNECTED DOMAINS (VORTEX METHODS, EULER EQUATIONS, FLUID MECHANICS)". Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/188100.

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Very accurate methods, based on boundary integral techniques, are developed for the study of multiple, interacting fluid interfaces in an Eulerian fluid. These methods are applied to the evolution of a thin, periodic layer of constant vorticity embedded in irrotational fluid. Numerical regularity experiments are conducted and suggest that the interfaces of the layer develop a curvature singularity in infinite time. This is to be contrasted with the more singular vorticity distribution of a vortex sheet developing such a singularity in a finite time.

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16

Merante, Marco. "Application of dynamic rating to improve transportation capability of the power systems connected to wind power plants". Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200930.

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Current flow in the electrical grid is changing due to the introduction of new generators and loads.Specifically, weak Overhead lines, are a constraint for the introduction of wind farms located farfrom the central network. The current situation requires smart solutions to improve the transportationcapabilities of these grid’s components. Among the different possibilities, Dynamic Line Rating(DLR), is emerging as the most interesting solution from both the economic and technical points ofview. The presented Thesis work investigates the performance of DLR from both the theoretical andpractical perspectives.The theory behind DLR is based on the development of a thermal model able to estimate the precisetemperature experienced by OHLs conductor under different climate conditions. Since 1972, whenthe first investigation on DLR have been published, different thermal models have been developed,each with a different precision level. The first part of the thesis concerns the investigation of IEEE738 standard accuracy.The standard analysis highlighted weaknesses on the theoretical approach employed on the forcedconvective cooling calculation. Specifically the wind direction effect is estimated as the conductorwas a perfect cylinder. A wind tunnel test has been performed in order to verify the effect of theconductor’s strands on the total thermal equilibrium. The results show that an inclined wind-conductor relative direction can have a more important impacton the line rating than foreseen with the IEEE thermal model. Since the wind tunnel test has been thefirst experience of this kind pursued at KTH, the presence of few different laboratory set-updeficiencies did not allow to draw a definitive and precise conclusion on the necessary IEEE formulacorrection.The practical side of the Thesis project includes an extensive literature research on the differentdevices that can be employed for dynamic line rating and a real-case study analysis. The analysis isperformed in order to evaluate which can be the best solution when the introduction of new windenergy supply increase the load on a pre-existent OHL. Results show that, in the selected region,Värmland, in the southwestern Sweden, DLR has the prerequisites to allow the exploitation of thehigh wind energy resource at the lower expenses. Wind energy production is often associated with anincreased cooling on the line’s conductors. This means that higher current levels can be withstoodavoiding the need for expensive lines’ upgrading. For the selected hot-spot, in 2015, DLR wouldhave allowed a transport capability improvement of 69.6% during the summer and of 26.7% duringthe winter. It is also reported that a load equal to the SLR during the winter period would have causedserious overheating transients of the conductor. Overall DLR proved to allow technical and economicbenefit for the system operator.
Flödet genom elnätet förändras på grund av införandet av ny generering och nya typer av laster.Specifikt är svaga luftledningar en begränsning för installation av vindkraft som ligger långt fråndet centrala nätet. Den nuvarande situationen kräver smarta lösningar för att förbättratransportkapaciteten i elnätet. Bland de olika möjligheterna finns Dynamic Line Rating (DLR) somframstår som den mest intressanta lösningen från både ekonomiska och tekniska synvinklar. Det härexamensarbetet behandlar resultatet av DLR från både teoretiska och praktiska perspektiv.Den teoretiska grunden för DLR är baserad på utvecklingen av en termisk modell som kan skattatemperaturen i luftledningar under olika klimatförhållanden. Examensarbetets första del behandlaren undersökning av IEEE 738 standarden (DLR standard). IEEE 738 standarden utgår från ledarensom en perfekt cylinder. Något som har en effekt bland annat i effekten av vindriktning. Ettvindtunnel test har utförts för att verifiera effekten av fler kardelers effekt på den totala termiskajämvikten. Resultaten visar att antalet kardeler har en betydande effekt på den termiska jämviktenoch då alltså även på DLR.Den andra delen av examensarbetet innehåller en omfattande litteratursökning på de olikaapparaterna som kan användas till DLR samt en praktik undersökning/analys. Analysen utförs föratt utvärdera vilken lösning som kan vara den bästa vid införandet av mer vindkraft, som ökarbelastningen på en redan existerande luftledning. Resultaten visar att, i det valda området,Värmland, i sydvästra Sverige, har DLR förutsättningar för att medge ökat utnyttjandet av den storavindkraft resurs som finns där till relativt låga kostnader. Slutsatsen av examensarbetet är att DLR ger tekniska och ekonomiska fördelar tillsystemoperatören.

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17

Gatouillat, Arthur. "Towards smart services with reusable and adaptable connected objects : An application to wearable non-invasive biomedical sensors". Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI123/document.

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La prolifération des objets communicants fixes et mobiles soulève la question de leur intégration dans les environnements quotidiens, par exemple dans le cadre de la e-santé ou de la domotique. Les principaux défis soulevés relèvent de l’interconnexion et de la gestion de la masse de donnée produite par ces objets intelligents. Notre premier objectif est d’adopter une démarche des couches basses vers les couches hautes pour faciliter l’intégration de ces objets à des services intelligents. Afin de développer celle-ci, il est nécessaire de d’étudier le processus de conception des objets intelligents indépendamment de considérations matérielles et logicielles, au travers de la considération de leur propriétés cyber-physiques. Pour mener à bien la réalisation de services intelligents à partir d’objets connectés, les deux axes de recherche suivant seront développés : la définition d’une méthode de conception orientée service pour les objets connectés intégrant une dimension formelle ainsi de valider le comportement de ceux-ci, l’auto-adaptation intelligente dans un contexte évolutif permettant aux objets de raisonner sur eux même au travers d’un langage déclaratif pour spécifier les stratégies d’adaptation. La validation de ces contributions s’effectuera par le biais du développement et de l’expérimentation à grandeur nature d’un service de diagnostic médical continu basé sur la collecte de données médicales en masse par des réseaux non-intrusifs de capteurs biomédicaux portables sur le corps humain
The rapid growth of fixed and mobile smart objects raises the issue of their integration in everyday environment, e.g. in e-health or home-automation contexts. The main challenges of these objects are the interoperability, the handling of the massive amount of data that they generate, and their limited resources. Our goal is to take a bottom-up approach in order to improve the integration of smart devices to smart services. To ensure the efficient development of our approach, we start with the study of the design process of such devices regardless of specific hardware or software through the consideration of their cyber-physical properties. We thus develop two research directions: the specification of a service-oriented design method for smart devices with formal considerations in order to validate their behavior, and the proposal of a self-adaptation framework in order to handle changing operating context through self-reasoning and the definition of a declarative self-adaptation objectives specification language. The testing of these contributions will be realized through the development of a large-scale experimental framework based on a remote diagnostics case-study relying on non-invasive wearable biomedical sensors

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18

Almgren, Love y Åström Johan Holm. "Probabilistic modelling and attack simulations on AWS Connected Vehicle Solution : An Application of the Meta Attack Language". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259298.

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This work is focused on investigating if the Meta Attack Language (MAL) can be used to create an integrating layer between two different applications of the MAL, and thus being able to model a new domain. In this case vehicleLang and awsLang were choosen as candidate applications of the MAL. While the domain chosen was to model the AWS Connected Vehicle Solution Infrastructure. This domain therefore modelled a service that is quickly becoming popular among car manufacturers. The two languages were successfully compiled into one language using the MAL, and also able to model a leak within AWS that could potentially lead to greater exposure of the infrastructure as a whole. On the other hand some limitations in the MAL compiler has lead to suggestions of how to improve it for better support of integration of different MAL applications.
Denna rapport är fokuserad på att undersöka om Meta Attack Language (MAL) kan användas till att skapa ett integrerande lager mellan två olika tillämpningar av MAL, och därmed modellera en ny domän. VehicleLang och awsLang valdes som tillämpningar av MAL. Domänen som valdes att modellera var AWS Connected Vehicle Solution Infrastructure, vilket är en service som blir allt mer populär bland biltillverkare. De två språken kompilerades ihop till ett med hjälp av MAL, och det användes till att modellera en läcka inom AWS som potentiellt kunde leda till en större exponering av infrastrukturen. Samtidigt har några begränsningar i MAL kompilatorn lett till några förbättringsförslag för bättre integrationssupport av olika MAL applikationer.

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19

Bouneb, Bourbia. "Feasibility and economic study of a grid connected fuel cell/battery based micro-CHP system for residential application". Thesis, University of Strathclyde, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510676.

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Lobbes, Hervé Bertrand Antoine. "Application connectée pour le recueil participatif et le diagnostic à partir de selfies de l'œil : détection de carence martiale". Electronic Thesis or Diss., Université Clermont Auvergne (2021-...), 2024. http://www.theses.fr/2024UCFA0166.

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Contexte : La carence en fer est fortement prévalente en population générale, notamment chez les femmes réglées. La carence en fer peut entraîner l'apparition d'une anémie, altère la qualité de vie et les performances cognitives et est responsable d'une augmentation de la morbidité pendant la grossesse. La pâleur muqueuse, bien visible au niveau conjonctival et la coloration bleutée de la sclère sont des signes cliniques classiques mais subjectifs d'anémie et de carence en fer. Le diagnostic de certitude est coûteux, eu égard à la prévalence de la pathologie et repose sur la réalisation d'un hémogramme et d'un dosage de ferritine sérique. Notre objectif est de mettre au point un dispositif non invasif de dépistage de l'anémie et de la carence en fer par analyse en image artificielle d'images de l'œil.Patientes et méthodes : nous avons construit un modèle d'apprentissage profond pour la prédiction de l'anémie (hémoglobine < 12 g/dL) et de la carence en fer (ferritine < 20 µg/L) à partir de photographies de l'œil (sclère et conjonctive palpébrale inférieure). Les images étaient réalisées de façon standardisées avec un smartphone et une caméra professionnelle d'ophtalmologie (Lacrydiag®). Pour chaque sujet, 4 images avec la sclère et 2 images avec la sclère et la conjonctive (par traction douce sur la paupière inférieure) étaient réalisées par œil selon chacune des méthodes (smartphone et caméra Lacrydiag). Nous avons recruté prospectivement des patientes adultes ayant bénéficié d'un dépistage de l'anémie ferriprive (hémogramme et ferritine). Les pathologies hémolytiques, les antécédents de pathologies héréditaires du tissu conjonctif, ou toute intervention ou traumatisme susceptibles de modifier l'aspect de l'œil étaient des critères d'exclusion.Résultats : Nous avons inclus 202 femme (âge médian 22 ans, hémoglobine médiane 13 g/dL), dont 49.5% étaient carencées en fer (ferritine médiane 11 µg/L, Q1-Q3 : 7-14) et 17% étaient anémiques (hémoglobine médiane 11.4 g/dL, Q1-Q3 : 10.8-11.7). Après reconstruction en « High Dynamic Range » des images smartphone, une segmentation automatisée des photographies fournissait des masques d'images comprenant uniquement les zones d'intérêt (sclère, conjonctive). Ces masques était soumis à un panel de réseaux neuronaux convolutionnels (plateforme Autokeras, Université du Texas), permettant de trouver le meilleur modèle prédictif. Une tendance non significative (p = 0.06) entre les valeurs de ferritine prédites et réelles était identifié sur l'algorithme en régression sur les images HDR du smartphone. Aucune corrélation n'était identifiée en régression pour l'hémoglobine quel que soit le type d'image, ni pour la ferritine sur les images Lacrydiag. En classification, les meilleurs résultats pour la classification de la carence en fer étaient obtenus avec un seuil de ferritine < 15 µg/L sur les images HDR de la sclère, avec une sensibilité de 59%, une spécificité de 75.6% et une valeur prédictive négative de 75%. Pour la classification de l'anémie, l'algorithme sur les images HDR de la conjonctive donnait une sensibilité de 66.7%, une spécificité de 77.6%, une valeur prédictive positive de 38.1% et une valeur prédictive négative de 91.8%.Conclusion : les performances de l'algorithme pour la prédiction de l'anémie à partir d'images smartphone de la conjonctive et de la sclère sont encourageantes. En régression, les résultats sont non significatifs mais une tendance est notée pour la prédiction de la ferritine sur les images HDR. Pour le dépistage de la carence en fer, l'algorithme de classification offre une sensibilité moyenne. Afin d'améliorer les performances de cet outil de dépistage, il est indispensable d'augmenter les effectifs de la base d'apprentissage, et de la valider dans d'autres populations hommes, patients âgés comorbides)
Background: Iron deficiency is highly prevalent in the general population, particularly in women of childbearing age. Iron deficiency increases pregnancy morbidity, impairs the quality of life through decrease of cognitive performance and can lead to anemia. Mucosal pallor, easily identified on the palpebral conjunctiva is widely used to predict anemia. Iron deficiency may also induce a bluish discoloration of the sclera, but these signs are subjective. However, certainty diagnosis lays on full blood count and serum ferritin dosage, representing a huge economic burden given to the prevalence of iron deficiency anemia. We aimed to build an affordable effective non-invasive diagnostic test through deep-learning eye image analysis to predict iron deficiency and anemia.Patients and methods: We built a deep-learning algorithm to detect anemia (hemoglobin < 12 g/dL) and iron deficiency (ferritin < 20 µg/L) through eye image analysis. For each subject, four images with the sclera and two images with the sclera and conjunctiva (by gentle traction on the lower eyelid) were taken per eye using a smartphone and a professional camera (Lacrydiag®) in similar lighting conditions. We prospectively included healthy adult women screened for iron deficiency anemia during routine medical practice. Hemolytic disease, connective tissue disease, eye surgery or trauma were exclusion criteria.Results: Among the 202 women recruited (median age 22 years, median hemoglobin 13 g/dL), 49.5% had iron deficiency (median ferritin 11 µg/L, Q1-Q3: 7-17) and 17 were anemic (median hemoglobin 11.4 g/dL, Q1-Q3: 10.8-11.7). Smartphone images were merged into High dynamic range format: mask of the sclera and conjunctiva (automated segmentation) were analyzed with a panel of convolutional neural network provided by Autokeras platform (Texas University) to identify the most efficient model. No significant correlation was found in regression analysis between real and predicted hemoglobin values with smartphone and Lacrydiag® images. Sensitivity and specificity for the prediction of iron deficiency (classification algorithm, ferritin < 15 µg/L) were 59% and 75.6% respectively with smartphone sclera images analysis (positive predictive value 59.8%, negative predictive value 75%). Sensitivity and specificity for the prediction of anemia (classification algorithm, hemoglobin < 12 g/dL) were 66.7% and 77.6% respectively with conjunctiva smartphone images analysis (positive predictive value 38.1%, negative predictive value 91.8%).Conclusion: the convolutional neural network analysis of the sclera and conjunctiva smartphone HDR image analysis is efficient to predict anemia. The model failed to predict hemoglobin level. Results for the ferritin prediction on HDR image analysis are encouraging but further analysis are still required. For iron deficiency screening, the classification model provided a modest sensitivity. To improve the performance of our model, it appears essential to increase the size of the learning database and to validate its efficacy in other populations (men, elderly comorbid patients)

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21

Ahmed, Md Salman. "An Investigation into the Performance Evaluation of Connected Vehicle Applications: From Real-World Experiment to Parallel Simulation Paradigm". Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etd/3214.

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A novel system was developed that provides drivers lane merge advisories, using vehicle trajectories obtained through Dedicated Short Range Communication (DSRC). It was successfully tested on a freeway using three vehicles, then targeted for further testing, via simulation. The failure of contemporary simulators to effectively model large, complex urban transportation networks then motivated further research into distributed and parallel traffic simulation. An architecture for a closed-loop, parallel simulator was devised, using a new algorithm that accounts for boundary nodes, traffic signals, intersections, road lengths, traffic density, and counts of lanes; it partitions a sample, Tennessee road network more efficiently than tools like METIS, which increase interprocess communications (IPC) overhead by partitioning more transportation corridors. The simulator uses logarithmic accumulation to synchronize parallel simulations, further reducing IPC. Analyses suggest this eliminates up to one-third of IPC overhead incurred by a linear accumulation model.

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22

Siegel, Joshua Eric. "Data proxies, the cognitive layer, and application locality : enablers of cloud-connected vehicles and next-generation internet of things". Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104456.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 247-270).
Intelligent and Connected Vehicles reduce cost, improve safety, and enhance comfort relative to isolated vehicles. This ability for cars to sense, infer, and act facilitates data-driven improvements in occupant experience and vehicle design. This thesis explores informed individual vehicle improvements and proposes a secure and efficient architecture supporting connected vehicle applications. Applying On-Board Diagnostic and smartphone data, I built a suite of prognostic applications. Engine coolant temperature data supports inference of oil viscosity and remaining life. A linear SVM using Fourier, Wavelet, and Mel Cepstrum audio features provides 99% accurate engine misfire detection. PCA-transformed Fourier acceleration features and GPS data inform decision trees attaining 91% wheel imbalance and 80% tire pressure and tread depth classification accuracy. These applications demonstrate the ability for local vehicle and peripheral device data to proactively improve individual vehicle reliability and performance. Connectivity facilitates crowdsourced data to further improve current vehicles and future designs. Exploring vehicular connectivity, I consider data timeliness, availability and bandwidth cost in the context of an efficiency-improving idle time predictor. This predictor uses contextual information to eliminate short idle shutoffs in Automatic Engine Start/Stop systems, minimizing driver annoyance and improving compliance. These applications reveal an opportunity to address excess resource consumption and system insecurity in Connected Vehicles and other constrained devices. I introduce a secure and efficient model-based Internet of Things (IoT) architecture consisting of a "Data Proxy" utilizing a Cloud-run estimator to mirror an object with limited sensor input. The use of digital duplicates abstracts physical from digital objects, allowing the use of a mediating "Cognitive Layer" consisting of firewall and supervisory elements. These "Cognitive" elements apply the system model to monitor system evolution and simulate the impact of commands against known and learned limits. Finally, I propose incorporating this architecture into the CloudThink digital object duplication platform. Proxies maximize data collected per unit cost, while the firewall and supervisory elements will allow increased actuator access and to support generalized Cloud-based prognostics. I discuss how CloudThink's data ownership policies and privacy visualization tools combine with this architecture to address consumer privacy and security concerns, improving consumer acceptance of Connected Vehicles.
by Joshua Eric Siegel.
Ph. D.

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23

Chaher, Yosra. "Cadre d'ingénierie pour l'innovation ouverte : application en santé connectée". Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30121.

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Face à nombreux défis, les organisations compétitives de nos jours sont celles qui transforment rapidement les nouvelles idées en nouveaux produits ou services. C'est pourquoi, elles cherchent à mieux maîtriser leur processus d'innovation et à le rendre plus efficace sur l'ensemble des fonctions de leur chaîne de valeur, depuis la phase de génération des idées jusqu'à leur mise sur le marché. De plus, au cours des quinze dernières années, les grandes entreprises ont ouvert leurs processus d'innovation en raison de la nécessité de cycles d'innovation de plus en plus courts et de délais de commercialisation réduits. Cependant, nous constatons qu'il n'y a pratiquement aucune approche formelle dans la littérature liée à la modélisation de l'innovation qui rationalise la gestion du processus d'innovation dite "ouverte". Dans ce contexte, nous développons un cadre méthodologique en ciblant in fine le processus de l'innovation ouverte afin de le formaliser et rationaliser sa gestion. La démarche de l'ingénierie dirigée par les modèles mise en place nous permet de proposer une approche formelle pour bien structurer la gestion de l'innovation ouverte. Pour cela, notre recherche s'est focalisée dans un premier temps sur la conception d'un modèle conceptuel qui décrit les connaissances inscrites dans le périmètre du management de l'innovation ouverte grâce à une formalisation en UML. Ce modèle conceptuel est considéré comme le socle de référence de notre cadre méthodologique puisqu'il est générique et peut être appliqué à toute innovation. Nous avons ensuite proposé un modèle de cycle de vie qui décrit le processus de l'innovation ouverte, fondé sur la collaboration et l'échange entre les différents acteurs. Nous avons détaillé ce modèle en processus métiers collaboratifs à l'aide des diagrammes BPMN pour décrire les activités opérationnelles, et des diagrammes DMN pour cadrer les activités de prise de décisions. Enfin, nous avons illustré ce cadre méthodologique sur deux cas d'études liés au domaine de la santé connectée, afin de tester sa validité
Faced with many challenges, competitive organizations today are those that quickly transform new ideas into new products or services. This is why they are seeking to better control their innovation process and make it more efficient across all functions of their value chain, from the idea generation phase to their launch. In addition, over the past 15 years, large companies have opened up their innovation processes due to the need for shorter innovation cycles and shorter time to market. However, we note that there is virtually no formal approach in the literature related to innovation modeling that streamlines the management of the so-called "open" innovation process. In this context, we are developing a methodological framework by targeting the open innovation process in order to formalize it and rationalize its management. The Model-Driven Engineering approach implemented allows us to propose a formal approach to properly structure the management of open innovation. To this end, our research focused initially on the design of a conceptual model that describes the knowledge included in the scope of open innovation management through formalization in UML. This conceptual model is considered the reference base of our methodological framework since it is generic and can be applied to any type of innovation. Then, we proposed a life cycle model that describes the process of open innovation, based on collaboration and exchange between the different actors. We have detailed this model into collaborative business processes using BPMN diagrams to describe operational activities, and DMN diagrams to frame decision making activities. Finally, we illustrated this methodological framework on two case studies related to the field of connected health, in order to test its validity

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24

Tamburini, Caterina. "The isomorphism problem for directed acyclic graphs: an application to multivector fields". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15793/.

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This thesis is based on a project developed by a group of researchers at the Faculty of Mathematics and Computer Science at the Jagiellonian University of Krakow. They study sampled dynamics using combinatorial multivector fields. Applying a decomposition into strongly connected components, it is possible to create a directed acyclic graph, called Morse graph, which is a description of the multivector field's global dynamics. Therefore the purpose of this thesis is to compare directed acyclic graphs. In the first chapter we describe the creation process of a Morse graph and an algorithm to study the graph isomorphism problem. The second chapter is dedicated to our personal work, so we describe four Python tests we developed to establish whether two directed acyclic graphs are definitely not isomorphic. In the third chapter we sum up many examples. The last chapter aims to present a possible way for the future work, that is to treat a combinatorial multivector filed as a finite topological space.

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25

Anthony, Lizel Angelique. "An exploratory study of employee responses to the implementation of SAP R/3 and connected application portfolios (CAPs) at an energy company". Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1415.

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The aim of this research was to explore employee responses to the implementation of SAP R/3 and Connected Application Portfolios (CAPs) in Shell South Africa (Pty) Ltd. Downstream-One (DS-1) Business/Lubricants (B2B/Lubes) Project Implementation Programme. It assessed whether employees accepted or rejected change prior to the implementation of SAP R/3 and CAP’s. In 2005 globally Shell launched its Enterprise Resource Planning (ERP) implementation. Its 16th implementation was conducted in Shell South Africa (Pty) Ltd. (Shell SA) in 2008. This research was conducted using a qualitative approach.

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26

Blundel, Richard Kenneth. "The growth of 'connected' firms : a re-appraisal of Penrosian theory and its application to artisanal firms operating in contemporary business networks". Thesis, University of Birmingham, 2002. http://bura.brunel.ac.uk/handle/2438/1325.

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The thesis is concerned with the growth of ‘connected’ firms, characterised as small firms that are engaged in stable spatial and vertical network relationships, involving a variety of actors, including larger firms. It locates these firms within the landscape of the ‘New Competition’, (Best 1990, 2001), highlighting the relatively unexplored region occupied by connected artisanal firms. The literature review is constructed around a detailed re-appraisal of Edith Penrose’s (1959) study, The Theory of the Growth of the Firm, which traces its antecedents, re-constructs its interconnections and calibrates its explanatory potential against the work of contemporaries, successors and opponents. The review provides the basis for development of a modified Penrosian framework, designed to embrace a multi-level analysis of growth processes that span the ‘blurred boundaries’ of the connected firm. An empirical study of the growth of connected artisanal firms demonstrates the application of this modified framework. The study is presented in the form of an analytically structured narrative, illustrated by network mapping sequences and informed by a qualified critical realist perspective. The final chapters reflect on the theoretical, methodological and practical policy implications of the study, highlighting the broader implications for researching the growth of other forms of connected firm.

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27

BIANCO, Giuliano. "On the Transvection Group of a Rack. With an application to the classification of Connected Quandles of Order a Power of a Prime". Doctoral thesis, Università degli studi di Ferrara, 2015. http://hdl.handle.net/11392/2389091.

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Alpay, Aylin. "Untangling Road Trip Experiences with Conected Car : Planning and bringing it to the car". Thesis, Umeå universitet, Designhögskolan vid Umeå universitet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-136640.

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With developing technologies and growing infrastructures, connected experiences are expanding their realms towards various devices and scenarios in our lives. One of the areas, which is going under a big change due to this connectivity is the car related experiences. As connectivity is intrinsically enabler of different experiences and services, it is foreseen that it will bring a different dimension to car and driving related experiences as well.By investigating the future trends and possibilities that connectivity can provide to car and driving related experiences, this thesis aims for imagining the near future scenarios with an explorative approach, focusing on one and addressing to the rising issues with a design proposal that is meaningful to both users and the industry.The result, Tripcloud, contributes to the future scenario of having a road trip with the car, with a new digital platform that aims for supporting the users throughout the planning and bringing the plans into the car experience seamlessly and safely. It aims for reducing today’s existing complexity in terms of interaction and cognition to provide a better experience and avoid driver distraction. With providing organised information pieces, information exchange between people and automated links with mobile devices and car, Tripcloud offers easier an more convenient alternative for road trip planing and bringing the plans into car experiences for the near future.

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29

Solano, Araque Edwin. "De l’ergonomie automobile à l’optimisation de la conduite automatisée. Application à l’écoconduite des véhicules électriques". Thesis, Orléans, 2020. http://www.theses.fr/2020ORLE3059.

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Cette thèse se focalise sur l'étude de l’écoconduite (pratique de conduite visant à réduire l’impact environnemental de l’utilisation du véhicule) et, en particulier, des éco-manœuvres de conduite, avec prise en compte des contraintes d'infrastructure et de trafic, ainsi que des contraintes d'agrément de conduite. De plus, nous considérons, lors de la conception de l'algorithme, des principes inspirés de la cognition humaine, afin de renforcer l'efficacité et la bonne modularité. La facilité de calibration de l'algorithme est un autre aspect pris en considération. L'ensemble de l'exposé se focalise sur les véhicules électriques à batterie. Cependant, les principes proposés peuvent être adaptés pour leur application sur d'autres types de groupe motopropulseur.Ces travaux s’orientent sur trois grandes lignes. La première, l'Ergonomie de conduite, a permis de déterminer des critères d'agrément de conduite ; une modélisation du conducteur permettant de tenir compte des aspects ergonomiques est proposée. De même, nos hypothèses sont confrontées au comportement d’un conducteur en situation réelle, en appliquant une méthodologie innovante pour l'analyse d'enregistrements de roulages réels. Ensuite, une Modélisation énergétique du véhicule et des manœuvres de conduite est présentée, ainsi qu'une analyse du potentiel et l’origine du gain associé à différentes stratégies d'éco-conduite. Finalement un Algorithme de commande est proposé pour la réalisation d'éco-manœuvres de conduite, avec prise en compte des critères d'agrément. La structure globale de l'algorithme, basée sur les principes cognitifs, est constitué de plusieurs sous-systèmes le rendant modulaire et capable de répondre aux contraintes de calcul en temps réel et de mise au point, propres au milieu industriel
In the framework of this dissertation, we will focus on Eco-driving and, particularly on eco-maneuvers, taking into account constraints associated to infrastructure and traffic, as well as with drivability. Additionally, we will take inspiration on Cognitive Principles for the algorithm design; it will allow to reinforce algorithm’s effectiveness and modularity. Easiness of calibration will also be an important concern for our work. Our whole discussion focuses on Battery Electric Vehicles. However, the proposed principles may be adapted for their application for other types of powertrain.Our work treats three main topics: on one side, Driving Ergonomics, allowing to determine some criteria on drivability ; we will also propose a modelling of the driver allowing to take into account ergonomics considerations. Finally, we will assess our hypothesis with respect with driver behavior on real situations, by applying an innovative methodology for the analysis of actual driving records. Next we will focus on Energy Model of the vehicle and of driving maneuvers, as well as to the assessment of energy gain potential associated to several Eco-driving strategies; the origin of these gains is also studied. Finally, we propose a Control Algorithm allowing to execute driving eco-maneuvers, while taking into account drivability criteria. The global algorithm structure is based on cognitive principles presented earlier. These function consists of several subsystems, which improves its modularity, and enforces its potential to operate within real-time constraints, and simplifies calibrations ; these both are major advantages for an industrial application

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30

Toumieux, Pascal. "Conception d’un système d’évaluation à distance de la dépense énergétique liée à une activité physique : Application à la supervision de la dépense énergétique de patients en post - AVC". Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0141/document.

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Ce mémoire décrit la conception d’un dispositif, communicant sans fil, estimant la dépense énergétique liée à une activité physique (DEAP) de patients présentant de faibles niveaux d’activité physique (post-AVC) dans un milieu sensible comme les hôpitaux en associant fiabilité et sécurité. La nécessité d’une nouvelle conception s’appuie sur les résultats d’études préalables et de tests des dispositifs commercialisés dans ce domaine basés sur des accéléromètres. Pour limiter l’impact des radiofréquences, nous utilisons une technologie optique sans fil avec un émetteur porté par le patient en mouvement (plateforme existante associée à un accéléromètre et un système d’émission par diode infrarouge) et des récepteurs fixés au plafond reliés via Ethernet à un ordinateur distant permettant l’analyse des données. La probabilité de coupure d’un lien mobile en optique sans fil par transmission diffuse a été établie théoriquement en considérant un débit faible et une haute qualité de service classique dans le domaine médical. La mesure du nombre de pertes de trame durant la communication a permis de valider les performances théoriques de la technologie optique sans fil et d’établir la fiabilité de ce type de transmission infrarouge en fonction du nombre de récepteurs. Le calcul de la DEAP a été effectué à partir d’un pré-étalonnage sur deux personnes en comparant les résultats obtenus avec ceux donnés par calorimétrie et ceux donnés par un dispositif commercial. Nous avons optimisé l’étalonnage en réalisant un protocole d’essais avec un échantillon de personnes plus vaste puis avec un échantillon de onze personnes post-AVC pour valider le prototype
This thesis describes the design of a wireless device, communicating and estimating the energy expenditure (EE) related to physical activity of patients with low levels of physical activity (post stroke) in a sensitive environment such as hospitals by combining reliability and safety. The necessity of a new device is based on the results of preliminary studies and tests of commercially available devices (for the same use) based on accelerometers. To limit the impact of radio frequencies, we use optical technology with a wireless transmitter worn by a mobile patient (existing platform combined with an accelerometer and a system of transmission with infrared diode) and receiver fixed on the ceiling and connected via Ethernet to a remote computer for data analysis. The outage probability of a mobile wireless diffuse optical transmission was theoretically established by considering a low speed and a high quality of service in the conventional medical area. Measuring the number of frame losses during communication validates the theoretical performance of the optical wireless technology and proves the reliability of this type of mobile infrared transmission according to the number of receivers. The calculation of the EE has been performed on a pre-calibration from two people by comparing the results with those given by calorimetry and those given by a commercial device. We optimized the calibration by performing a test protocol with a larger sample of people and with a sample of eleven stroke people to validate the prototype

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31

Skoglund, Per. "Grid connected large-scale energy storage : Literature review regarding present technology and application, with a complementary case study that investigates the profitability of storage within a wind farm". Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-135758.

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In the transition from traditional power plants to more environmentally friendly alternatives will generate a need for more flexibility in production, transmission and consumption. Energy storage can be provide the flexibility that are required to continue to have a robust and stable electrical system. The purpose of this report is to give an overview of the electrical energy storage technologies. The classification of energy storage technologies used in this report is mechanical, chemical and electrical. In these three categories were ten different technologies presented with function, advantages, disadvantages, degree of maturity and research area for each technology. The distribution between the globally operational energy storage technologies were presented. Also the framework and regulations for actors to own and operate an energy storage in Sweden. This review was complemented with a case study about connecting a lithium ion battery system to a wind farm. The case investigated the profitability for 20 MW wind farm with a 12 MW and 18 MWh energy storage system for a five and ten-year period. The utilization of the storage was optimized with \textit{What's best} for three different investment cost. The review were done in order to answer: what is the futures energy storage technology?, what applications can be replaced by energy storage for an electricity producer? and what will the effects be of the new actor Aggregator? The result from comparing three different prices for lithium ion batteries resulted in a non-profit scenario for all the cases in a five-year period. There were a maximum, minimum and predicted futuristic price, which generated a loss of 731, 220 and 76.6 MSEK for respective case. Only the futuristic price for a ten-year period indicated an profit. The conclusion that can be drawn from this case study is that energy storage is too expensive and the extra income from utilization of the energy storage is not enough to motivate an energy storage investment. There are not a single technology that possesses all of the required properties for the applications. In the future there will be a combination of technologies to cover all the applications. For the seasonal storage pumped hydro and compressed air are most promising technologies. The flywheels and supercapacitors can contribute with short powerful burst of energy that are needed for power quality and operating reserves. For the more wide range application such as power fleet optimization and integrate the renewable energy production, batteries in form of lithium ion battery and sodium-sulfur battery will most probably be used. For electricity producers energy storage can replace existing solutions. Instead of using diesel generators for black start services, an battery can be used. Also the power quality could be enhanced with batteries acting as filters. The process can be more utilized in a more efficient way with an energy storage. The aggregator actor gathers small variable load from e.g several houses and participate on the electricity market. This actor will level out the differences in power demand during the day. It will reduce the losses and reduce the need for grid investments in both the transmission and distribution networks. It would also generate more available frequency reserves and probably change how the market is paying for the generated benefits.

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El, achkar Maria. "Contribution au Dimensionnement et à la Commande d’un Générateur de type Cascade de Machines Asynchrones à Double Alimentation". Thesis, Cergy-Pontoise, 2016. http://www.theses.fr/2016CERG0814/document.

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Le travail présenté dans cette thèse est une contribution au dimensionnement et à la commande d’un générateur de type Cascade de Machines Asynchrones à Double Alimentation. Le modèle de la machine pour les simulations est basé sur une représentation modulaire qui découle du modèle de Park de deux machines asynchrones doublement alimentées distinctes, en respectant deux systèmes de référence. Le modèle dynamique est ensuite étendu pour décrire la machine dans un repère unifié. Cette représentation est cruciale pour le dimensionnement de la machine et la synthèse de la commande. Le domaine de fonctionnement de la cascade en régime permanent est exploré. Une méthode analytique générique est proposée pour établir les plages de puissances active-réactive. Les courbes limites sont définies par rapport aux grandeurs nominales de la machine. L’étude prend en compte l’effet de saturation du circuit magnétique. Il est prouvé que la capacité en puissance de la machine est déterminée par les valeurs maximales des courants statoriques et peut être soumise à plusieurs limitations. L’approche analytique est testée et validée par des mesures expérimentales. Deux cas sont considérés pour la commande de la cascade : un générateur raccordé au réseau et un générateur autonome. Pour la connexion au réseau l’application visée est les éoliennes de grande puissance. Une nouvelle méthode pour l’extraction de la puissance maximale d’une éolienne à vitesse variable est proposée. Le système est contrôlé dans le but de fournir une puissance maximale quasi-constante indépendamment des fluctuations du vent. En plus de l’optimisation de la puissance, le facteur de puissance est également ajusté selon les normes de raccordement standard imposées par les services système, et les limites de fonctionnement de l’unité intégrée. Une commande vectorielle sans capteur de tension, basée sur une orientation suivant un flux virtuel, est appliquée pour la régulation découplée des puissances active et réactive. Pour le fonctionnement en mode isolé, l’application visée est la génération électrique pour système avionique embarqué. Deux réseaux de distribution sont traités : réseau AC à fréquence fixe et réseau DC. Dans les deux cas, la commande est élaborée dans le but de maintenir une tension de sortie constante. Le fonctionnement de la cascade alimentant une charge triphasée déséquilibrée est également étudié. Des schémas de contrôle servant à la compensation du déséquilibre des tensions statoriques sont développés. Deux méthodes de compensation sont proposées : l’une basée sur le principe de deux repères tournants et l’autre sur un correcteur répétitif. Les approches présentées sont validées par simulation avec Matlab/Simulink et par expérimentation
This thesis is a contribution to the power sizing and the control of a Cascaded Doubly Fed Induction Generator (CDFIG). The machine model for simulation is based on a modular representation, derived from the Park model of two distinct Doubly Fed Induction Machines expressed in their own reference frames. The dynamic model of the cascaded machine is then extended to be described in a unified reference frame. This representation is convenient for the sizing of the machine and for the design of the controller. The steady state power operating margins of the cascaded machine are investigated. A generic analytic method is suggested to derive the active-reactive power domain. The limit curves are defined in terms of the rated quantities of the machine. The study takes into account the magnetic circuit saturation effect. It is proven that the power capability of the machine is determined by the stator current maximum values and is subject to several limitations. The analytical approach is tested and validated by experimental measurements. The CDFIG is controlled in grid-connected and standalone operation modes. In grid-connected application, the attention is paid to high power wind generation systems. A new maximum power tracking of a variable speed wind turbine is suggested. The generating plant is carried to provide a quasi-constant maximum power regardless wind fluctuations. In addition to active power optimization the power factor is adjusted according to the grid code requirements and the operating domain of the integrated unit. A virtual flux oriented vector control is applied for the decoupled regulation of active and reactive powers, leading to grid voltage sensorless operation. In standalone operating mode, the study treats in particular the embedded aircraft power system generation. Two distribution networks are considered: constant frequency AC network and DC network. In both cases, the control aims to maintain a constant output voltage. The operation of the CDFIG supplying unbalanced three-phase load is further explored. Control schemes to cope with unbalanced stator voltage conditions are developed. Two compensation methods are elaborated: the first dealing with dual rotating frames and the second is based on repetitive controller. Simulations with Matlab/Simulink software and experiments validate the control approaches

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33

Ziegenfuss, Katharina. "Bewertung innovativer Geschäftsmodelle: Entwicklung eines Simulationsmodells und Anwendung auf die bedarfsabhängige Funktionserweiterung im vernetzten Fahrzeug: Development of a simulation model and application to the ‘Function on Demand’ concept of the connected car". Universitätsverlag Chemnitz, 2019. https://monarch.qucosa.de/id/qucosa%3A73123.

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Die Bedeutung innovativer Geschäftsmodelle als Bestimmungsfaktor für den Unternehmenserfolg steht weitestgehend außer Frage. Aufgrund der hohen Komplexität von Geschäftsmodellen hat sich jedoch bislang kein praktisch anwendbares Bewertungskonzept etablieren können, welches Geschäftsmodellinnovationen in Hinblick auf deren Erfolgsentwicklung untersucht. Zur Adressierung dieser Problemstellung wird unter Anwendung des systemdynamischen Ansatzes ein Simulationsmodell entwickelt, welches den Wertbeitrag einer Geschäftsmodellinnovation ausweist. Neben dem Kapitalwert als finanzielle Wertgröße des Geschäftsmodells werden ferner der Kundenwert sowie der Wert der unternehmerischen Fähigkeiten als wichtige Wertgrößen explizit gemacht, da sie die zukünftige Leistungs- und Wettbewerbsfähigkeit des Geschäftsmodells determinieren. Damit liefert das Bewertungsmodell einen Ansatz zur ganzheitlichen Geschäftsmodellbewertung, die die Anwendung finanzieller Standardkalkulationen mit der Messbarmachung nicht-finanzieller Erfolgsgrößen kombiniert.:1 Einführung 2 Geschäftsmodelle und Geschäftsmodellbewertung 3 Entwicklungsprozess des systemdynamischen Geschäftsmodells bedarfsabhängiger Funktionserweiterungen 4 Aufbau des systemdynamischen Geschäftsmodells bedarfsabhängiger Funktionserweiterungen 5 Simulation des systemdynamischen Geschäftsmodells bedarfsabhängiger Funktionserweiterungen 6 Schlussbetrachtung
Business model innovations provide powerful levers for creating sustainable competitive advantage and thus have a positive impact on the value of an enterprise. However, due to the complexity of business models, no practically applicable framework, evaluating an innovative business model with regard to its effect on a company’s success, has been established. Hence, a simulation model assessing the value contribution of a business model innovation is developed. Using the mathematical modeling technique ‘System Dynamics’ to frame the value drivers of a business allows for simulation experiments that reveal the effect of the business model’s design on its profitability, therewith guiding policymakers towards better decisions. As a result, the simulation model reports the net present value of a business model. In addition, the success indicators customer lifetime value and the value of the enterprises’ capabilities are identified as important assets that have to be monitored closely as they determine the company’s prospective performance. In combining financial standard calculations with the operationalization of non-financial measures, the simulation model represents a comprehensive approach for business model evaluation.:1 Einführung 2 Geschäftsmodelle und Geschäftsmodellbewertung 3 Entwicklungsprozess des systemdynamischen Geschäftsmodells bedarfsabhängiger Funktionserweiterungen 4 Aufbau des systemdynamischen Geschäftsmodells bedarfsabhängiger Funktionserweiterungen 5 Simulation des systemdynamischen Geschäftsmodells bedarfsabhängiger Funktionserweiterungen 6 Schlussbetrachtung

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Sarisin, Mustafa Nevzat. "Design Of A Connected Pipe Test Facility For Ramjet Applications". Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606078/index.pdf.

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ABSTRACT DESIGN OF A CONNECTED PIPE TEST FACILITY FOR RAMJET APPLICATIONS SARISIN, Mustafa Nevzat M.S., Department of Mechanical Engineering Supervisor: Asst. Prof. Dr. Abdullah ULAS Co-Supervisor: Prof. Dr. Kahraman ALBAYRAK April 2005, 164 pages Development of the combustor of a ramjet can be achieved by connected pipe testing. Connected pipe testing is selected for combustor testing because pressure, temperature, Mach number, air mass flow rate can be simulated by this type of testing. Real time trajectory conditions and transition from rocket motor (booster) to ramjet operation can also be tested. The biggest advantage of connected pipe testing is the low operation cost and simplicity. Air mass flow rate requirement is less than the others which requires less air storage space and some components like supersonic nozzle and ejector system is not necessary. In this thesis, design of a connected pipe test facility is implemented. Three main systems are analyzed
air storage system, air heater system and test stand. Design of air storage system includes the design of pressure vessel and pressure &
flow regulation system. Pressure and flow regulation system is needed to obtain the actual flow properties that the combustor is exposed to during missile flight. Alternatives for pressure and air mass flow rate regulation are considered in this study. Air storage system designed in this thesis is 27.8 m3 at 50 bar which allows a test duration of 200 seconds at an average mass flow rate of 3 kg/s. Air heater system is utilized to heat the air to simulate the aerodynamic heating of the inlet. Several different combustion chamber configurations with different flame holding mechanisms are studied. The most efficient configuration is selected for this study. Combustion analysis of the air heater is performed by FLUENT CFD Code. Combustion process and air heater designs are validated using experimental data. Designed air heater system is capable of supplying air at a temperature range of 400-1000 K and mass flow rate range of 1.5-8 kg/s at Mach numbers between 0.1-0.5 and pressure between 2-8 bar. Finally the design of the test stand and ramjet combustor analysis are completed. 3D CAD models of the test stand are generated. Ramjet combustor that will be tested in the test setup is modeled and combustion analysis is performed by FLUENT CFD Code. The ramjet engine cruise altitude is 16 km and cruise Mach number is 3.5. Key-words: Air Breathing Engines, Ramjet, Connected Pipe, Direct Connect, Vitiator.

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35

Weber, Bruno. "Optimisation de code Galerkin discontinu sur ordinateur hybride : application à la simulation numérique en électromagnétisme". Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAD046/document.

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Nous présentons dans cette thèse les évolutions apportées au solveur Galerkin Discontinu Teta-CLAC, issu de la collaboration IRMA-AxesSim, au cours du projet HOROCH (2015-2018). Ce solveur permet de résoudre les équations de Maxwell en 3D, en parallèle sur un grand nombre d'accélérateurs OpenCL. L'objectif du projet HOROCH était d'effectuer des simulations de grande envergure sur un modèle numérique complet de corps humain. Ce modèle comporte 24 millions de mailles hexaédriques pour des calculs dans la bande de fréquences des objets connectés allant de 1 à 3 GHz (Bluetooth). Les applications sont nombreuses : téléphonie et accessoires, sport (maillots connectés), médecine (sondes : gélules, patchs), etc. Les évolutions ainsi apportées comprennent, entre autres : l'optimisation des kernels OpenCL à destination des CPU dans le but d'utiliser au mieux les architectures hybrides ; l'expérimentation du runtime StarPU ; le design d'un schéma d'intégration à pas de temps local ; et bon nombre d'optimisations permettant au solveur de traiter des simulations de plusieurs millions de mailles
In this thesis, we present the evolutions made to the Discontinuous Galerkin solver Teta-CLAC – resulting from the IRMA-AxesSim collaboration – during the HOROCH project (2015-2018). This solver allows to solve the Maxwell equations in 3D and in parallel on a large amount of OpenCL accelerators. The goal of the HOROCH project was to perform large-scale simulations on a complete digital human body model. This model is composed of 24 million hexahedral cells in order to perform calculations in the frequency band of connected objects going from 1 to 3 GHz (Bluetooth). The applications are numerous: telephony and accessories, sport (connected shirts), medicine (probes: capsules, patches), etc. The changes thus made include, among others: optimization of OpenCL kernels for CPUs in order to make the best use of hybrid architectures; StarPU runtime experimentation; the design of an integration scheme using local time steps; and many optimizations allowing the solver to process simulations of several millions of cells

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Eskenazi, Sébastien. "On the stability of document analysis algorithms : application to hybrid document hashing technologies". Thesis, La Rochelle, 2016. http://www.theses.fr/2016LAROS019/document.

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Un nombre incalculable de documents est imprimé, numérisé, faxé, photographié chaque jour. Ces documents sont hybrides : ils existent sous forme papier et numérique. De plus les documents numériques peuvent être consultés et modifiés simultanément dans de nombreux endroits. Avec la disponibilité des logiciels d’édition d’image, il est devenu très facile de modifier ou de falsifier un document. Cela crée un besoin croissant pour un système d’authentification capable de traiter ces documents hybrides. Les solutions actuelles reposent sur des processus d’authentification séparés pour les documents papiers et numériques. D’autres solutions reposent sur une vérification visuelle et offrent seulement une sécurité partielle. Dans d’autres cas elles nécessitent que les documents sensibles soient stockés à l’extérieur des locaux de l’entreprise et un accès au réseau au moment de la vérification. Afin de surmonter tous ces problèmes, nous proposons de créer un algorithme de hachage sémantique pour les images de documents. Cet algorithme de hachage devrait fournir une signature compacte pour toutes les informations visuellement significatives contenues dans le document. Ce condensé permettra la création de systèmes de sécurité hybrides pour sécuriser tout le document. Ceci peut être réalisé grâce à des algorithmes d’analyse du document. Cependant ceux-ci ont besoin d’être porté à un niveau de performance sans précédent, en particulier leur fiabilité qui dépend de leur stabilité. Après avoir défini le contexte de l’étude et ce qu’est un algorithme stable, nous nous sommes attachés à produire des algorithmes stables pour la description de la mise en page, la segmentation d’un document, la reconnaissance de caractères et la description des zones graphiques
An innumerable number of documents is being printed, scanned, faxed, photographed every day. These documents are hybrid : they exist as both hard copies and digital copies. Moreover their digital copies can be viewed and modified simultaneously in many places. With the availability of image modification software, it has become very easy to modify or forge a document. This creates a rising need for an authentication scheme capable of handling these hybrid documents. Current solutions rely on separate authentication schemes for paper and digital documents. Other solutions rely on manual visual verification and offer only partial security or require that sensitive documents be stored outside the company’s premises and a network access at the verification time. In order to overcome all these issues we propose to create a semantic hashing algorithm for document images. This hashing algorithm should provide a compact digest for all the visually significant information contained in the document. This digest will allow current hybrid security systems to secure all the document. This can be achieved thanks to document analysis algorithms. However those need to be brought to an unprecedented level of performance, in particular for their reliability which depends on their stability. After defining the context of this study and what is a stable algorithm, we focused on producing stable algorithms for layout description, document segmentation, character recognition and describing the graphical parts of a document

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Moohan, R. "Connected health : applications in community pharmacy practice". Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.680058.

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As the population ages, the use of information technology and telecommunications in healthcare delivery (often known as Connected Health, telehealth or e-health) has been proposed as a means of providing . patient-centred care to those with chronic conditions. Little research has been conducted into the involvement of community pharmacists in Connected Health delivery. This thesis aimed to investigate the potential role of community pharmacists in the delivery of Connected Health services. A systematic content analysis of print media was performed to explore reporting of Connected Health in UK and US newspapers. A qualitative interview study was conducted with community pharmacists and key stakeholders in Canada and Northern Ireland to gather their views on community pharmacist involvement in Connected Health. Informed by the latter qualitative study, an online questionnaire was distributed to community pharmacists in Northern Ireland to explore their views regarding their potential role in Connected Health. Finally, a feasibility study was carried out, in which community pharmacists sent patients mobile telephone medication reminders and remotely monitored their blood pressure . . Connected Health was positively reported by the print media in the US and the UK. Community pharmacist and key stakeholder interviewees were supportive of community pharmacist involvement in Connected Health, believing it would extend and promote ' their role. However, they had concerns regarding appropriate remuneration. Similar views were obtained from community pharmacist questionnaire respondents. The feasibility study showed that a community pharmacy-based Connected Health programme could be successfully implemented on a small scale. Participants involved were positive about community pharmacist involvement in Connected Health. Community pharmacist involvement in Connected Health has the potential to improve patient outcomes and ease pressure on the health service. However, barriers such as funding and general practitioner acceptance would need to be overcome and a sound evidence base established before routine pharmacist involvement becomes a reality.

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38

Bouali, Baghli Rayhana. "Approche sémantique de la conception de services connectés : cadre d'architecture, algorithmique de composition, application à la maison connectée". Electronic Thesis or Diss., Paris, ENST, 2017. http://www.theses.fr/2017ENST0072.

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Dans le contexte de l’Internet des Objets, la conception de services connectés – c’est-à-dire de services portés par des objets connectés – nécessite une approche de bout en bout pour non seulement répondre aux attentes des bénéficiaires de ces services mais aussi pour adapter le fonctionnement de ces services à des conditions d’exécution très variées allant de la maison à la ville connectée. L’approche sémantique proposée par cette thèse offre un niveau d’abstraction qui permet aux concepteurs de services de se concentrer sur les aspects fonctionnels des services et des objets. Elle s’inscrit dans un cadre d’architecture plus large qui aborde, en plus de ce niveau sémantique, les aspects plus opérationnels de mise en oeuvre de ces services (niveau Artefacts) dans des environnements techniques éventuellement hétérogènes (niveau Ressources). En proposant cette approche sémantique de conception, la thèse vise plusieurs objectifs qui peuvent être regroupés en trois catégories. La première catégorie d’objectifs est de décloisonner le monde actuel des services connectés en découplant les services des objets connectés et en permettant le partage d’objets par plusieurs services connectés. L’ouverture induite par ces premiers objectifs conduit à viser une deuxième catégorie d’objectifs qui a trait à la composition des services connectés. Chaque service devra être conscient et adopter un comportement compatible avec les autres éléments de son contexte d’exécution. Ces éléments de contexte comprennent bien sûr les autres services mais aussi les phénomènes physiques et les actions des occupants des espaces concernés. Enfin, la troisième catégorie d’objectifs s’adresse plus s’adresse plus particulièrement aux bénéficiaires des services connectés afin d’optimiser l’expérience utilisateur par des attentes mieux prises en compte et des automatismes respectueux des comportements humains. Le fondement théorique de l’approche sémantique proposée dans cette thèse s’appuie sur un méta-modèle qui permet de définir les éléments de modélisation nécessaires pour modéliser les services, les objets connectés et les comportements des services sous forme déclarative
In the context of the Internet of Things, the design of connected services - that is, services supported by connected objects - requires an end-to-end approach to not only meet the expectations of the recipients of these services but also to adapt the operation of these services to a wide range of execution conditions spreading from smart homes to smart cities. The semantic approach proposed in this thesis provides a level of abstraction that allows service designers to focus on the functional aspects of services and objects. It is part of a larger architecture framework that addresses, in addition to this semantic level, the more operational aspects of implementation of these services (Artifacts level) in potentially heterogeneous technical environments (Resources level). By proposing this semantic design approach, the thesis aims at achieving several objectives that can be grouped into three categories. The first category of objectives is to decompartmentalize the current world of connected services by decoupling services from connected objects and allowing the sharing of objects by several connected services. The openness induced by these first objectives leads to a second category of objectives that relates to the composition of connected services. Each service will have to be aware and adopt a behavior compatible with the other elements of its execution context. These contextual elements include of course the other services but also the physical phenomena and the actions of the occupants of the spaces concerned. Finally, the third category of objectives focusses on at the recipients of connected services in order to optimize the user experience through better requirement management and automatisms respectful of human behaviors. The theoretical basis of the semantic approach proposed in this thesis is a meta-model that defines the modeling elements needed to model services, connected objects and service behaviors in a declarative form

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39

Yadav, Arpit. "Reaching High Availability in Connected Car Backend Applications". Master's thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-229021.

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The connected car segment has high demands on the exchange of data between the car on the road, and a variety of services in the backend. By the end of 2020, connected services will be mainstream automotive offerings, according to Telefónica - Connected Car Industry Report 2014 the overall number of vehicles with built-in internet connectivity will increase from 10% of the overall market today to 90% by the end of the decade [1]. Connected car solutions will soon become one of the major business drivers for the industry; they already have a significant impact on existing solutions development and aftersales market. It has been more than three decades since the introduction of the first software component in cars, and since then a vast amount of different services has been introduced, creating an ecosystem of complex applications, architectures, and platforms. The complexity of the connected car ecosystem results into a range of new challenges. The backend applications must be scalable and flexible enough to accommodate loads created by the random user and device behavior. To deliver superior uptime, back-end systems must be highly integrated and automated to guarantee lowest possible failure rate, high availability, and fastest time-to-market. Connected car services increasingly rely on cloud-based service delivery models for improving user experiences and enhancing features for millions of vehicles and their users on a daily basis. Nowadays, the software applications become more complex, and the number of components that are involved and interact with each other is extremely large. In such systems, if a fault occurs, it can easily propagate and can affect other components resulting in a complex problem which is difficult to detect and debugg, therefore a robust and resilient architecture is needed which ensures the continuous availability of system in the wake of component failures, making the overall system highly available. The goal of the thesis is to gain insight into the development of highly available applications and to explore the area of fault tolerance. This thesis outlines different design patterns and describes the capabilities of fault tolerance libraries for Java platform, and design the most appropriate solution for developing a highly available application and evaluate the behavior with stress and load testing using Chaos Monkey methodologies.

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MALINVERNO, MARCO. "Safety Applications and Measurement Tools for Connected Vehicles". Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2895395.

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Fyfe, Martin R. W. "Safety evaluation of connected vehicle applications using micro-simulation". Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59955.

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Connected vehicles are on the cutting edge of automotive technology with applications expected to improve mobility and safety. Several studies have evaluated the mobility benefits of connected vehicle technology but there is little research on its impact on safety. The first objective of this study is to investigate the ability to evaluate the safety of a connected vehicle applications using surrogate safety measures through a combination of the micro-simulation model VISSIM and the Surrogate Safety Assessment Model (SSAM). Two connected vehicle applications are reviewed, considering two types of connected vehicle communications, specifically Vehicle-to-Vehicle and Vehicle-to-Infrastructure. The two applications are a cumulative travel time (CTT) intersection control algorithm connected vehicle environment, and a cooperative adaptive cruise control (CACC) application, facilitating vehicle platooning on a freeway. The CACC study investigates the improvement to the freeway segment through a simulated incident. The CTT study investigates the impacts of calibrating the micro-simulation model using real-world vehicle trajectory and conflict data. The CTT algorithm is applied to a signalized intersection and evaluated under three calibration scenarios: uncalibrated, first step calibrated for desired speed and vehicle arrival types, and second step calibrated for conflicts observed in the field. In both studies, a comparison of safety based on the number of conflicts at different time-to-collision thresholds is provided for the varying scenarios. Results show that the combination of VISSIM and SSAM provide an appropriate tool to use in the evaluation of changes in the level of safety of connected vehicle applications, specifically the CACC application and the CTT intersection control application. Calibration of the micro-simulation model has a significant impact on the results of the safety evaluation. However, it is inconclusive whether the results are realistic with the lack of a real-world connected vehicle implementation.
Applied Science, Faculty of
Civil Engineering, Department of
Graduate

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42

SERGI, FRANCESCO. "PEM fuel cell system analysis for grid connected applications". Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2010. http://hdl.handle.net/2108/1298.

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L'incremento delle sorgenti ad energia rinnovabile porterà un grande cambiamento sulla rete elettrica nazionale, la quale dovrà operare in modo intelligente per gestire la fornitura di molti produttori di energia distribuita e per compensare l'imprevedibilità delle rinnovabili. Tuttavia, per poter far ciò, le reti elettriche del futuro necessitano di generatori distribuiti capaci di assicurare servizi quali l'inseguimento del carico, l'accumulo di energia, la compensazione dei disturbi e che abbiano un effetto mitigante sui picchi di carico e/o di generazione. I sistemi a celle a combustibile, specialmente quelli alimentati ad idrogeno, hanno raggiunto considerevoli target in termini di prestazioni in condizioni di laboratorio. Combinando alta efficienza ed un comportamento dinamico veloce (disponibilità di potenza immediata su richiesta), anche a carichi parziali e con piccole taglie, i sistemi a cella a combustibile di tipo PEM sono sempre di più analizzati nell'ottica del loro impiego nelle nascenti reti di potenza. Lo scopo di questo lavoro è mostrare le attuali performance delle fuel cell, il loro comportamento durante il funzionamento con la rete elettrica ed, in particolare, i fenomeni relativi alla degradazione dei materiali che possono verificarsi in questo tipo di applicazioni. Dapprima l'attività di ricerca è stata indirizzata allo sviluppo di un sistema da 5 kW di tipo PEM, considerando le procedure di start up e di warm up, l'analisi del comportamento dinamico in funzione della variazione della temperatura e del carico elettrico. Conseguentemente, alcuni test sono stati condotti sia su sistemi che su monocella in modo da poter confrontare le prestazioni in caso di carichi in corrente continua ed alternata. Infatti, la potenza in reti monofase contiene una fluttuazione sinusoidale a bassa frequenza che procura un ripple sulla corrente di uscita dello stack. I test hanno mostrato la degradazione del materiale del catalizzatore dovuta a questo tipo di dinamica.
An increase in renewable energy sources (RWE) will bring about a great change in the national electric grid, which will operate intelligently (smart grid) in order to manage the supply of several energy producers and to cover the unpredictability of RWE [1]. Nevertheless, in order to become smart, the future electrical networks need active distributed units able to assure services like load following, back-up power, power quality disturbance compensation and peak shaving. Fuel cell systems, especially those fed with hydrogen, have reached considerable performance targets in laboratory conditions. Combining high efficiency and fast regulating behaviour (power on demand), even at partial loads and on small size units, PEM fuel cell systems are more and more investigated as components of the incoming power networks. The aim of this work is to highlight the fuel cells actual performances, their behaviour during grid connected operation and, particularly, the phenomena of materials degradation that can appear in these applications. At first, the research activity was addressed to the investigation on a developed 5 kW PEM fuel cell system, including the start-up and warm up procedure, the analysis of the dynamic behaviour linked to temperature and load variations. Accordingly, tests were conducted both on fuel cell systems and single cells in order to compare the performances evaluated with dc and ac loads. In fact, power drawn by single phase grids contains a low frequency sinusoidal fluctuation that brings a large ripple on the stack output current. The tests on single cells have determined the degradation occurred on catalyst material due to the effect of this kind of dynamic loads.

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43

Bessafa, Hichem. "Advanced Estimation Algorithms for Connected and Autonomous Vehicle Applications". Electronic Thesis or Diss., Université de Lorraine, 2024. http://www.theses.fr/2024LORR0075.

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Cette thèse est dédiée au développement d'algorithmes d'estimation avancés spécifiquement conçus pour les applications des véhicules autonomes. Initialement, nous fournissons un aperçu complet des différents contrôleurs de véhicules et des systèmes avancés d'assistance à la conduite, préparant le terrain pour une discussion approfondie sur les modèles de dynamique et de cinématique des véhicules. Nous explorons ensuite les observateurs classiques (basés sur des modèles) et ceux basés sur l'apprentissage automatique (pilotés par les données), en examinant leur littérature et leurs applications dans les contextes des véhicules et de la robotique. Notre recherche introduit plusieurs méthodologies novatrices : d'abord, une approche d'estimation sur un intervalle de temps fini pour les systèmes à paramètres variables linéaires (LPV) discrets, appliquée à la dynamique latérale du véhicule pour estimer le dérapage malgré les incertitudes de la rigidité en courbe. Ensuite, nous proposons un observateur neuro-adaptatif qui combine les réseaux neuronaux avec l'apprentissage concurrent pour estimer les forces inconnues dans le modèle longitudinal du véhicule. En outre, nous présentons un observateur généralisé à grand gain, incorporant des conditions de matrice linéairement inégalitaire (LMI) et une contrainte de seuil sur le paramètre de grand gain, conçu pour gérer des mesures et des contraintes supplémentaires. Cet observateur garantit des bornes de stabilité entrée-état (ISS) sur le bruit de mesure et s'adapte aux systèmes non canoniques via une transformation de sortie et une conception de système augmenté. Enfin, nous validons nos méthodes par des simulations étendues en utilisant le simulateur CARLA et l'estimation de trajectoire avec le jeu de données KITTI, démontrant une performance supérieure en termes de précision, de vitesse de convergence et de robustesse dans divers scénarios de véhicules. Les résultats illustrent des améliorations significatives par rapport aux méthodes traditionnelles, soulignant le potentiel pratique de nos techniques d'estimation avancées pour améliorer les performances des véhicules autonomes
This thesis is dedicated to the development of advanced estimation algorithms specifically designed for autonomous vehicle applications. Initially, we provide a comprehensive overview of various vehicle controllers and advanced driving assistance systems, setting the stage for an in-depth discussion of vehicle dynamics and kinematics models. We then explore both classical (model-based) and machine learning-based (data-driven) observers, examining their literature and applications within vehicular and robotics contexts. Our research introduces several novel methodologies: first, a finite time interval estimation approach for discrete Linear Parameter Varying (LPV) systems, applied to the vehicle's lateral dynamics to estimate side slip despite uncertainties in cornering stiffness. Next, we propose a neuro-adaptive observer that combines neural networks with concurrent learning to estimate unknown forces in the vehicle's longitudinal model. Furthermore, we present a generalized high-gain observer, incorporating Linear Matrix Inequality (LMI) conditions and a threshold constraint on the high-gain parameter, designed to handle additional measurements and constraints. This observer ensures Input-to-State Stability (ISS) bounds on measurement noise and adapts to non-canonical systems via output transformation and augmented system design. Finally, we validate our methods through extensive simulations using the CARLA simulator and trajectory estimation with the KITTI dataset, demonstrating superior performance in terms of accuracy, convergence speed, and robustness in various vehicular scenarios. The outcomes illustrate significant improvements over traditional methods, highlighting the practical potential of our advanced estimation techniques in enhancing autonomous vehicle performance

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44

Nsimba, Cedrick Bamba. "SyncSmartv: framework para sincronização de aplicações smart TV com programas televisivos". Universidade Federal de São Carlos, 2015. https://repositorio.ufscar.br/handle/ufscar/604.

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Made available in DSpace on 2016-06-02T19:06:23Z (GMT). No. of bitstreams: 1 6784.pdf: 3336016 bytes, checksum: bb429455480a66cf8cf47517a7ee317b (MD5) Previous issue date: 2015-02-09
Financiadora de Estudos e Projetos
Smart TV applications are typically disconnected from the content of the tuned programming on the TV set. Some broadcasters offer specific applications for programs, however, these applications are generally just loosely coupled or synchronized to the program. Furthermore, applications are fully under domain of broadcasters, that have the information about the transmitted content. Based on the fact that synchronized information may arise from third-parties, obtained by local content processing or offered directly by the viewers, new opportunities will be opened up for developing a bunch of new interesting applications aiming to promote the user interaction level in TV. Moreover, it will have new user interaction possibilities while using mobile devices and computers, furthermore a new business model will be emerged. In this master thesis, the SyncSmartv framework is presented and evaluated. The aforementioned framework offers several APIs that facilitate the development of Smart TV applications synchronized with TV program contents. The aim is to provide some facilities for developers to implement applications in this area in a clear approach without being concerned about low-level implementation details.
Aplicações Smart TV normalmente são desvinculadas do conteúdo da programação sintonizada no aparelho de TV. Algumas emissoras oferecem aplicativos específicos para programas mas esses aplicativos são, em geral, apenas levemente acoplados ou sincronizados ao programa. Além disso, os aplicativos são de total domínio das emissoras, que detêm o conhecimento sobre o conteúdo transmitido. A partir do princípio de que informações de sincronismo possam advir de serviços de terceiros, independentes de emissoras, obtidos por processamento local de conteúdo ou oferecidas diretamente pelo telespectador, oportunidades se abrem para o desenvolvimento de aplicativos bastante interessantes, com potencial de promover maior interatividade na TV, novas possibilidades de interação quando se considera o uso de dispositivos móveis e computadores, satisfação aos telespectadores e novos modelos de negócio. Neste trabalho de mestrado apresenta-se e avalia-se o framework SyncSmartv. O framework oferece diversas APIs que favorecem o desenvolvimento de aplicações para Smart TV sincronizadas com o programa sintonizado. Pretende-se fornecer ao desenvolvedor facilidades para construção de aplicações nesse domínio, de forma transparente, sem a necessidade de se preocupar com detalhes de implementação de nível baixo.

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Randriamasy, Malalatiana. "Localisation et transmissions sécurisées pour la communication Véhicule à Infrastructure (V2I) : Application au service de télépéage ITS-G5". Thesis, Normandie, 2019. http://www.theses.fr/2019NORMR011/document.

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La localisation précise des véhicules et la sécurité des échanges sont deux grands axes qui font la fiabilité des services fournis dans les systèmes de transport intelligent. Ces dernières années, elles font l’objet de nombreux projets de recherche pour des champs d’application divers. Dans cette thèse, le contexte d’application est la réalisation d’un service de télépéage utilisant la technologie ITS-G5. Cette technologie de communication sans-fil permet dans un premier temps le partage des informations de sécurité routière entre les véhicules (V2V), le véhicule et l’infrastructure (V2I). Dans cette thèse, on propose une architecture permettant d’échanger des transactions de télépéage utilisant les équipements communicants en ITS-G5 embarqués dans les véhicules connectés et les unités bord de route (UBR) de l’infrastructure. Les problématiques de nos travaux de recherche se concentrent sur la méthode de localisation des véhicules ayant effectué la transaction afin de pouvoir la valider et sur la sécurité de l’architecture proposée pour assurer l’échange de cette transaction. Afin de bien localiser les véhicules lors du passage au péage, notre approche propose la compréhension de la cinématique du véhicule par une modélisation adéquate à partir des données recueillies dans les messages coopératifs (CAM : Cooperative Awareness Message) en approche du péage. Cela améliorera les informations de géolocalisation déjà présentes. Notre objectif est d’arriver à une précision de moins d’un mètre pour distinguer 2 véhicules adjacents. D’autre part, le protocole de sécurité proposé permet d’assurer l’authentification des équipements participant à l’échange et à la validation de la transaction, l’intégrité des données échangées ainsi que la confidentialité des échanges compte tenu du contexte de communication sans-fil et de la sensibilité des données échangées. Une preuve de concept de la solution de télépéage utilisant la technologie ITS-G5 est développée et intègre nos deux contributions
The precise localization of vehicles and the security of communication are requirements that make almost of the services provided in intelligent transport systems (ITS) more reliable. In recent years, they have been the subject of numerous research projects for various fields of application. In this thesis, the context is the development of an electronic toll service using the ITS-G5 technology. This wireless communication technology initially allows the sharing of traffic safety information between vehicles (V2V), vehicle and infrastructure (V2I). In our work, we propose a tolling application using equipment operating in ITS-G5 embedded in the connected vehicles and roadside units. For this, ensuring both precise geolocation of the vehicles and security of communication are required to validate the transaction.In order to properly locate the vehicles during the toll crossing, our approach is based on the understanding of the kinematics of the vehicle through a suitable modeling from the data collected in the cooperative messages (called CAM: Cooperative Awareness Message). This approach aims to improve the geolocation information already present in the message. Our goal is to achieve vehicle localization with an accuracy lower than one meter to distinguish two adjacent vehicles. On the other hand, the proposed tolling protocol ensures the authentication of the equipment or entities involved in the exchange and the validation of the transaction, the integrity of the transmitted data as well as the confidentiality of the communication. In this way, we take into account the context of the wireless communication and the sensitivity of the exchanged data. Our two contributions are integrated in the implemented Proof of Concept of the tolling application using the ITS-G5 technology

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46

Ung, Yannick. "Étude de l'équilibre de vie des personnes présentant des troubles obsessionnels compulsifs : utilisation de stratégies d'adaptation pour faire face aux situations de déséquilibre occupationnel Indicateurs de la qualité de vie des personnes présentant des troubles obsessionnels compulsifs : une étude de la portée Conception d’outils d’évaluation environnementaux : application expérimentale auprès de personnes présentant des troubles obsessionnels compulsifs (TOC) Stratégies d’adaptation utilisées par des personnes présentant des Troubles Obsessionnels Compulsifs (TOC) pour maintenir un équilibre de vie Exploration de l’équilibre de vie des personnes présentant des Troubles Obsessionnels Compulsifs (TOC) Occupations des personnes présentant des troubles obsessionnels compulsifs : étude de cas utilisant un dispositif de compensation technologique à domicile". Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCB186.

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En raison des rituels compulsifs et des pensées obsédantes, les personnes présentant des TOC sont préoccupées par leur niveau de fonctionnement dans toutes les sphères de la vie. Une impression de déséquilibre occupationnel et une altération de la qualité de vie peuvent apparaître chez ces personnes lorsque leur routine est perçue comme insatisfaisante. Cette thèse vise trois objectifs principaux, soit : (1) déterminer les situations de déséquilibre occupationnel des personnes présentant des TOC, (2) identifier les stratégies d'adaptation utilisées à domicile et (3) développer et documenter l'utilisation de dispositifs techniques/technologiques pour maintenir un équilibre de vie à travers la promotion des occupations. Une étude de la portée (scoping review) a été menée dans un premier temps pour déterminer les données existantes dans les écrits scientifiques internationaux en lien avec les indicateurs de la qualité de vie des personnes présentant des TOC (chapitre 1). Les objectifs sont : (1) explorer les composantes de la qualité de vie des personnes qui présentent des Troubles Obsessionnels Compulsifs (TOC) ; (2) identifier les variables qui modifient leur qualité de vie ; (3) analyser les retombées des TOC sur les activités de la vie quotidienne. Le second chapitre présente une approche innovante et a fait l'objet un article publié dans un ouvrage collectif. Celui-ci porte sur la description du devis de recherche du projet Analyse du Handicap Associé aux Troubles Obsessionnels Compulsifs [AHATOC] (Morgiève et Briffault, 2015). Ce projet est une recherche clinique participative qui a pour objectif d'identifier les facteurs environnementaux liés aux TOC et de concevoir des dispositifs techniques et technologiques de compensation des situations de handicap. L'article propose également deux outils d'évaluation environnementaux : (1) un chrono-ergomètre est un disque circadien permettant de cartographier dans le temps les routines quotidiennes ; (2) une méthodologie a été développée pour cartographier en 2D et en 3D des TOC. Le troisième chapitre concerne une étude qui identifie les stratégies d'adaptation utilisées par les personnes présentant des TOC (chapitre 3) et documente les dimensions altérées de l'équilibre de vie (chapitre 4). Pour cela, des entretiens semi-dirigés ont été réalisés au domicile de huit participants présentant des TOC pour explorer les retombées des obsessions et des compulsions dans les activités de la vie quotidienne. En outre, un questionnaire intitulé inventaire de l'équilibre de vie [IEV] (Larivière et Levasseur, 2016, Matuska, 2012 ) a permis de documenter les atteintes ou perturbation des occupations quotidiennes. Les entretiens ont mis en évidence un degré d'insatisfaction des répondants vis-à-vis du temps passé à réaliser leurs occupations (équivalence). Les données de l'IEV ont révélé une évolution favorable de l'équilibre de vie, bien que le niveau de déséquilibre reste important pour l'ensemble des activités de la vie quotidienne des participants. Le chapitre 5 aborde une étude de cas qui a été menée auprès de deux participantes présentant des TOC. L'étude de cas a analysé les occupations perturbées par les manifestations des TOC et leur évolution sur une période de 30 mois. Trois outils ont été utilisés pour documenter ces deux situations, soit : (1) des entretiens semi-dirigés à partir de la matrice SWOT (Strengths Weaknesses Opportunities and Threats) ; (2) l'Inventaire de l'Équilibre de Vie ; (3) la cartographie des TOC dans le temps. Selon les observations faites, les occupations des deux participantes ont évolué favorablement grâce à l'utilisation des dispositifs techniques et technologiques de compensation. De plus, leur participation active dans la mise en place de ces dispositifs a été un élément favorable à leur acceptation et à leur intégration
Due to compulsive rituals and obsessive thoughts, people with OCD are concerned about their level of functioning in all spheres of life. Occupational imbalance and impaired quality of life may appear in these individuals when their routine is perceived as unsatisfactory. This thesis has three main objectives: (1) to determine the situations of occupational imbalance of people with OCD, (2) to identify the adaptation strategies used at home and (3) to develop and document the use of technical and technological devices to maintain a life balance through the promotion of occupations. A scoping review was first conducted to determine existing data in international scientific literature related to quality of life indicators for people with OCD (Chapter 1). The objectives are: (1) to explore the quality of life components of people with Obsessive Compulsive Disorders (OCD); (2) identify the variables that modify their quality of life; (3) analyze the impact of OCD on activities of daily living. The second chapter presents an innovative approach and was the subject of an article published in a collective work. This one deals with the description of the research project of the project Disability Analysis Associated with Compulsive Obsessive Disorders [AHATOC] (Morgiève and Briffault, 2015). This project is a participatory clinical research that aims to identify the environmental factors related to OCD and to design technical and technological devices for the compensation of disability situations. The article also proposes two environmental assessment tools: (1) a chrono-ergometer is a circadian disk for mapping the daily routines ; (2) a methodology has been developed to map in 2D and 3D rituals. The third chapter concerns a study that identifies the coping strategies used by people with OCD (Chapter 3) and documents the altered dimensions of life balance (Chapter 4). For this, semi-directed interviews were conducted in the homes of eight participants with OCD to explore the fallout of obsessions and compulsions in activities of daily living. In addition, a questionnaire titled Life Balance Inventory [LBI] (Larivière and Levasseur, 2016, Matuska, 2012) has documented the attacks or disruption of daily occupations. The interviews revealed a degree of dissatisfaction among the respondents with respect to the time they spent in their occupations (equivalence). The LBI data revealed a favorable evolution of the life balance, although the level of imbalance remains important for all activities of daily life of the participants. Chapter 5 discusses a case study of two participants with OCD who have experimented with technical / technological devices proposed by the AHATOC project. Three tools were used to document these two situations: (1) semi-structured interviews using the SWOT matrix (Strengths Weaknesses Opportunities and Threats); (2) the Inventory of the Balance of Life; (3) mapping of OCDs over time. According to the observations made, the occupations of the two participants evolved favorably thanks to the use of technical and technological compensation devices. In addition, their active participation in the implementation of these devices was a favorable element for their acceptance and integration

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47

Wang, Yuan-Fang. "Computer Vision Analysis for Vehicular Safety Applications". International Foundation for Telemetering, 2015. http://hdl.handle.net/10150/596451.

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ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV
In this paper, we present our research on using computer-vision analysis for vehicular safety applications. Our research has potential applications for both autonomous vehicles and connected vehicles. In particular, for connected vehicles, we propose three image analysis algorithms that enhance the quality of a vehicle's on-board video before inter-vehicular information exchange takes place. For autonomous vehicles, we are investigating a visual analysis scheme for collision avoidance during back up and an algorithm for automated 3D map building. These algorithms are relevant to the telemetering domain as they involve determining the relative pose between a vehicle and other vehicles on the road, or between a vehicle and its 3D driving environment, or between a vehicle and obstacles surrounding the vehicle.

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Danzfuss, Theodor Werner. "The technology of casually connected collaboration". Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-11232009-181958/.

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Lef��vre, St��phanie. "Risk Estimation at Road Intersections for Connected Vehicle Safety Applications". Phd thesis, Universit�� de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00765930.

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Les intersections sont les zones les plus dangereuses du r��seau routier. Les ��tudes d'accidentologie montrent que la plupart des accidents aux intersections sont caus��s par des erreurs des conducteurs, et qu'une majorit�� d'accidents pourraient ��tre ��vit��s gr��ce �� l'utilisation de syst��mes d'aide �� la conduite. Dans ce cadre, les communications inter-v��hiculaire sont une technologie particuli��rement prometteuse. Le partage d'informations entre les v��hicules via des liens sans fil permet �� chaque v��hicule de percevoir son environnement au-del�� des limites de champ de vision de ses capteurs embarqu��s. Il en r��sulte une repr��sentation de l'environnement plus ��tendue dans l'espace et dans le temps, ce qui am��liore la compr��hension de situation et permet d'anticiper le danger. Cette th��se aborde le probl��me de l'estimation du risque sous un angle nouveau : elle propose une structure de raisonnement pour analyser les sc��nes routi��res et le risque de collision �� un niveau s��mantique, contrairement aux approches classiques qui raisonnent au niveau des trajectoires. Le risque est calcul�� en estimant les intentions des conducteurs et en d��tectant les conflits, sans avoir �� pr��dire les trajectoires futures des v��hicules. Plus pr��cis��ment, la d��tection des situations dangereuses est bas��e sur la comparaison entre ce que les conducteurs ont l'intention de faire et ce que les conducteurs devraient faire d'apr��s les r��gles de la circulation. Ce raisonnement est r��alis�� de mani��re probabiliste afin de prendre en compte les incertitudes sur les mesures capteur et les ambig��it��s sur l'interpr��tation de la sc��ne. En th��orie ce raisonnement peut ��tre appliqu�� tout type de sc��ne routi��re ; dans cette th��se nous pr��sentons son application aux intersections. Le mod��le propos�� prend en compte l'influence que la man��uvre d'un v��hicule exerce sur la man��uvre des autres v��hicules. Il incorpore aussi des informations sur l'influence de la g��om��trie et topologie de l'intersection sur le comportement d'un v��hicule. L'approche propos��e a ��t�� valid��e par des tests en environnement r��el avec des v��hicules communicants, ainsi qu'en simulation. Les r��sultats montrent que l'algorithme est capable de d��tecter les situations dangereuses et qu'il est compatible avec des applications s��curitaires temps-r��el.

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50

Marshall, Jonathan. "Function theory in multiply connected domains and applications to fluid dynamics". Thesis, Imperial College London, 2006. http://hdl.handle.net/10044/1/1258.

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In this thesis we shall be considering a variety of problems set in the complex plane whose common feature is that they involve domains of finite multiple connectivity. We choose to focus on a particular canonical class of domains, namely circular domains. We extend our results to more general domains using conformal mappings. Results are derived for these circular domains by using the theory of Schottky groups. Problems we consider include the construction of automorphic functions, Green’s functions, and conformal mappings from circular domains to other commonly studied canonical domains. The abstract function-theoretic results we derive are applied to a number of physical problems of fluid dynamics

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Tesis sobre el tema "Connected application"

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