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Tesis sobre el tema "Network safety assessments"

Autor: Grafiati

Publicado: 10 de marzo de 2023

Última modificación: 31 de julio de 2025

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1

BONERA, MICHELA. "Risk-based network-wide road safety assessment. A new methodological approach." Doctoral thesis, Università degli studi di Brescia, 2022. http://hdl.handle.net/11379/555156.

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Nonostante la rete stradale europea sia tra le più sicure al mondo, le esternalità dovute all’incidentalità stradale risultano ancora troppo elevate, tanto che gli obiettivi di sicurezza stradale fissati per il 2020 non sono stati raggiunti. Il processo di Gestione della Sicurezza delle Infra-strutture Stradali (GSIS) mira a valutare, monitorare e migliorare le prestazioni di sicurezza di una rete stradale, durante il suo intero ciclo di vita. Nello specifico, la valutazione della sicurezza di rete rappresenta il primo passo dell'intero processo, e viene applicata su larga scala per individuar

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2

Björkman, Peter. "Probabilistic Safety Assessment using Quantitative Analysis Techniques : Application in the Heavy Automotive Industry." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-163262.

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Safety is considered as one of the most important areas in future research and development within the automotive industry. New functionality, such as driver support and active/passive safety systems are examples where development mainly focuses on safety. At the same time, the trend is towards more complex systems, increased software dependence and an increasing amount of sensors and actuators, resulting in a higher risk associated with software and hardware failures. In the area of functional safety, standards such as ISO 26262 assess safety mainly focusing on qualitative assessment technique

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3

Egilmez, Gokhan. "Road Safety Assessment of U.S. States: A Joint Frontier and Neural Network ModelingApproach." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1374854708.

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4

Song, Weilian. "Image-Based Roadway Assessment Using Convolutional Neural Networks." UKnowledge, 2019. https://uknowledge.uky.edu/cs_etds/78.

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Road crashes are one of the main causes of death in the United States. To reduce the number of accidents, roadway assessment programs take a proactive approach, collecting data and identifying high-risk roads before crashes occur. However, the cost of data acquisition and manual annotation has restricted the effect of these programs. In this thesis, we propose methods to automate the task of roadway safety assessment using deep learning. Specifically, we trained convolutional neural networks on publicly available roadway images to predict safety-related metrics: the star rating score and free-

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5

Maturana, Marcos Coelho. "Aplicação de Redes Bayesianas na análise da contribuição do erro humano em acidentes de colisão." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-11082010-165909/.

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Recentemente, na indústria naval, a normatização por sociedades classificadoras e pela IMO (International Maritime Organization) tem apresentado uma mudança paulatina, migrando dos procedimentos prescritivos para uma estrutura regulatória baseada em risco. Tal perspectiva oferece algumas vantagens para operadores e armadores (empresas que exploram comercialmente as embarcações): 1) maior capacidade de incorporar projetos inovadores, tecnicamente superiores, a custos aceitáveis; 2) maior confiança quanto à segurança; 3) melhor entendimento de eventos de periculosidade, dos riscos enfrentados em

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6

Subramani, Palanisamy Harisubramanyabalaji. "Risk Assessment based Data Augmentation for Robust Image Classification : using Convolutional Neural Network." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-153049.

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Autonomous driving is increasingly popular among people and automotive industries in realizing their presence both in passenger and goods transportation. Safer autonomous navigation might be very challenging if there is a failure in sensing system. Among several sensing systems, image classification plays a major role in understanding the road signs and to regulate the vehicle control based on urban road rules. Hence, a robust classifier algorithm irrespective of camera position, view angles, environmental condition, different vehicle size & type (Car, Bus, Truck, etc.,) of an autonomous p

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7

Gran, Bjørn Axel. "The use of Bayesian Belief Networks for combining disparate sources of information in the safety assessment of software based systems." Doctoral thesis, Norwegian University of Science and Technology, Department of Mathematical Sciences, 2002. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1679.

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<p>The objective of the research has been to investigate the possibility to transfer the requirements of a software safety standard into Bayesian belief networks (BBNs). The BBN methodology has mainly been developed and applied in the AI society, but more recently it has been proposed to apply it to the assessment of programmable systems. The relation to AI application is relevant in the sense that the method reflects the way of an assessor's thinking during the assessment process. Conceptually, software reliability is almost impossible to compute, since many of the aspects of the software whi

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8

Vyčítal, Václav. "Pravděpodobnostní přístup pro hodnocení zemnících soustav." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-414160.

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This dissertation thesis deals with application of probabilistic approach to assessment of earthing system safety in distribution networks, especially for cases with common earthing of high and low voltage side of distribution transformers HV/LV. In these cases, the increased potential during fault might be transferred from high voltage to low voltage network and thus the individuals from public can be exposed to increased risk. Thus, for these cases were in this thesis defined expectable touch scenarios together with the resulting risk imposed on individuals from the public. Based on the resu

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9

Maturana, Marcos Coelho. "Consideração da confiabilidade humana na concepção de sistemas complexos: desenvolvimento e aplicação da TECHR." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-29062017-082417/.

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A APS (Análise Probabilística de Segurança) de instalações industriais é assunto que evoluiu com a complexidade dos sistemas. A princípio, foram desenvolvidas ferramentas e técnicas com o propósito de analisar plantas já instaladas, possibilitando a identificação de fenômenos e mecanismos de falha desconhecidos até então. Com a evolução dos estudos dos acidentes, foram desenvolvidas técnicas aplicáveis às fases pré-operacionais com o propósito de diminuir os riscos na operação. Observa-se, portanto, um bom número de técnicas ideais para analisar projetos prontos ou em fase de conclusão. O mesm

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10

MINNUCCI, LUCIA. "An improved procedure for the seismic fragility analysis of existing bridges and implementation within a comprehensive probabilistic framework for the risk assessment." Doctoral thesis, Università Politecnica delle Marche, 2021. http://hdl.handle.net/11566/289535.

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La sicurezza dei sistemi infrastrutturali è di fondamentale importanza per la società. Malfunzionamenti, danni o crolli possono avere notevoli impatti socioeconomici e ripercussioni sulla sicurezza pubblica. Secondo l’approccio classico, l'analisi della vulnerabilità dei ponti viene condotta attraverso l'adozione di curve di fragilità, che esprimono la probabilità di superamento di un certo livello di prestazione condizionata ad un determinato livello di intensità della fonte di pericolo. Tuttavia, è pratica comune utilizzare le curve di fragilità per fornire solo una panoramica globale della

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11

Moraes, Francisco de Assis Basilio de. "Aplicação de redes Bayesianas na análise de risco do processo de descarga do navio-tanque em um terminal portuário especializado." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-05022016-064708/.

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Sistemas de transporte marítimo são essenciais para o Comércio Global, em especial, navios-tanques e seus centros de carga e descarga de produtos líquidos ou gasosos inflamáveis; portanto, é crucial entender como estes sistemas podem falhar, para que seus operadores sejam capazes de manter a sua capacidade de operação. É preciso que cada e toda análise quantitativa de risco compreenda algumas das atividades básicas que devem ser desenvolvidas, para permitir a quantificação dos riscos envolvidos e associados, na operação do sistema ou do processo. Basicamente, devem ser calculadas as probabilid

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12

Ed-Daoui, Ilyas. "Towards systems-of-systems structural resilience assessment Resilience assessment as a foundation for systems-of-systems safety evaluation : application to an economic infrastructure An approach to systems-of-systems structural analysis through interoperability assessment : application on Moroccan Case A study of an adaptive approach for systems-of-systems integration A contribution to systems-of-systems concept standardization Unstructured peer-to-peer systems : towards swift Routing A deterministic approach for systems-of-systems resilience quantification Vers des systèmes de systèmes robustes Security enhancement architectural model for IMS based networks Towards reliable IMS-based networks." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMIR07.

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De nos jours, nous attendons des systèmes de systèmes d'être plus que simplement fonctionnel, mais aussi fiable, de préserver leurs performances, de mener les actions requises et, surtout, d'anticiper d'éventuelles défaillances. La résilience fait partie des nombreuses approches d'évaluation de la fiabilité. Elle est directement liée aux conséquences de perturbations et incertitudes. Il s'agit des conséquences en cas de perturbations et des incertitudes associées. La résilience est définie comme la capacité des systèmes à résister à une perturbation majeure selon paramètres de dégradation et à

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13

Aurich, Allan. "Modelle zur Beschreibung der Verkehrssicherheit innerörtlicher Hauptverkehrsstraßennetze unter besonderer Berücksichtigung der Umfeldnutzung." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-125311.

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In der Arbeit wird eine Methodik einer zusammenhängenden Analyse und modellhaften Beschreibung der Verkehrssicherheit in städtischen Hauptstraßennetzen am Beispiel der Stadt Dresden entwickelt. Die dabei gewonnenen Modelle dienen der Abschätzung von Erwartungswerten von Unfallhäufigkeiten mit und ohne Personenschaden unter Berücksichtigung der Verkehrsbeteiligungsart. Die Grundlage bilden multivariate Regressionsmodelle auf Basis verallgemeinerter linearer Modelle (GLM). Die Verwendung verallgemeinerter Regressionsmodelle erlaubt eine Berücksichtigung von Verteilungen, die besser geeignet sind

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14

Lahidji, Reza. "Incertitude, causalité et décision : Le cas des risques sociaux et du risque nucléaire en particulier." Phd thesis, HEC, 2012. http://pastel.archives-ouvertes.fr/pastel-00718790.

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La probabilité et la causalité sont deux outils indispensables à la prise en compte des situations de risque social. Lesrelations causales sont le fondement des représentations à partir desquelles on peut évaluer le risque et concevoirdes actions de prévention, de mitigation ou d'indemnisation. La probabilité permet de quantifier cette évaluation et de calibrer ces actions. Dès lors, il semble non seulement naturel, mais nécessaire d'expliciter la place de la causalité et de la probabilité dans la définition d'un problème de décision en situation de risque social. C'est l'objet de cette thèse.

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15

Irwin, Michael Padric. "An investigation of online threat awareness and behaviour patterns amongst secondary school learners." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1002965.

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The research area of this work is online threat awareness within an information security context. The research was carried out on secondary school learners at boarding schools in Grahamstown. The participating learners were in Grades 8 to 12. The goals of the research included determining the actual levels of awareness, the difference between these and self-perceived levels of the participants, the assessment of risk in terms of online behaviour, and the determination of any gender differences in the answers provided by the respondents. A review of relevant literature and similar studies was c

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16

Paliotto, Andrea. "Development of a Human Factors Evaluation Procedure for Network-wide Road Safety Assessments." Doctoral thesis, 2022. http://hdl.handle.net/2158/1275592.

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This work aimed at the definition of a Network-wide Road Safety Assessment procedure for two-lane two-way rural roads, namely Human Factors Evaluation procedure, which accounts for the influence of Human Factors in accidents triggering factors. The purpose of such a procedure is to provide an instrument to evaluate the risk of accidents occurrence because of wrong perceptions and expectations caused by the road. This often translates in operational errors, which may become driving errors that finally results in accidents, if uncorrected. The need of a Network-wide Road Safety Assessment proced

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17

Chang, Ching-Miao, and 張清淼. "Bayesian-network-based safety risk assessment for steel construction projects." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/19183648636001909358.

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博士<br>國立臺灣科技大學<br>營建工程系<br>103<br>Fall or tremble is the most common accident on the steel construction (SC) sites. To reduce the fall risk, current site safety management relies mostly on checklist evaluation. Nevertheless, the classical approaches ineffectively address dependencies among safety factors at different levels, which fail to provide early warning to prevent the occupational accidents. To overcome the limitations of the traditional approaches, this paper discusses the development of a safety risk assessment model for the SC projects by establishing the Bayesian Networks (BN) bas

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18

Jiang, Wen-yu, and 姜玟妤. "Assessment of factors influencing safety climate in construction-using Analytic Network Process." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/65f4pq.

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碩士<br>國立高雄第一科技大學<br>營建工程研究所<br>102<br>The construction industry is a sector with a high rate of occupational accidents. Although management systems and policies for maintaining labor safety have improved significantly, workplace accidents still happen from time to time. Hence, examination of safety management should be focused on assessment of on-site safety climate. Through a review of the literature, this research first proposed 16 factors influencing safety climate that are categorized into three aspects as well as the relations among the factors, which were used for developing an assessmen

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19

Kabir, Sohag, and Y. Papadopoulos. "Applications of Bayesian networks and Petri nets in safety, reliability, and risk assessments: A review." 2019. http://hdl.handle.net/10454/17427.

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Yes<br>System safety, reliability and risk analysis are important tasks that are performed throughout the system lifecycle to ensure the dependability of safety-critical systems. Probabilistic risk assessment (PRA) approaches are comprehensive, structured and logical methods widely used for this purpose. PRA approaches include, but not limited to, Fault Tree Analysis (FTA), Failure Mode and Effects Analysis (FMEA), and Event Tree Analysis (ETA). Growing complexity of modern systems and their capability of behaving dynamically make it challenging for classical PRA techniques to analyse such

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20

PENUMAKA, AVINASH PRABHAKAR. "Design of integrated safety system for powered two wheelers." Doctoral thesis, 2010. http://hdl.handle.net/2158/596127.

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21

Abaei, MM. "Risk and reliability assessment of marine operations." Thesis, 2018. https://eprints.utas.edu.au/29886/1/Abaei_whole_thesis.pdf.

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Marine structures are widely used in the oil and gas industry, marine transportation and exploration areas and renewable energy applications. Understanding dynamic behaviour of these structures is necessary to allow their evaluation under the effects of environmental loads such as wave, wind and currents. However, the sea environment is very complex, and the response of these structures is affected by considerable uncertainties that should be predicted accurately. Due to the stochastic trend of the sea environment, different types of failure are expected to be observed during the life time of

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22

VESCIO, GIOVANNI. "Vulnerability and Reliability Assessment of Electrical Power System using Petri Nets." Doctoral thesis, 2012. http://hdl.handle.net/11573/916929.

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The research aims to build a behavioral models of electrical power systems through the use of Petri nets, covering both traditional reliability analysis (quantitative measurement) and behavior analysis (qualitative measurement) for the detection of topology defects. The development models has allowed to study the operating sequence of the electrical system, where the evolution of the system to be monitored is compared with its ideal evolution. The modelling criterion is then validated by the implementation in two case studies. In the first case, the whole approach is applied to the identifi

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23

Silveira, Sílvia Patrícia Carvalho da. "Estudo da qualidade da água para consumo humano em redes prediais: contributos para o plano de segurança da água da Póvoa de Varzim." Master's thesis, 2018. http://hdl.handle.net/1822/59747.

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Dissertação de mestrado em Engenharia Urbana<br>De acordo com a Organização Mundial da Saúde (OMS), a forma mais eficaz de garantir uma água segura pode concretizar-se através da implementação de planos de segurança da água (PSA) que contemplam a descrição detalhada do sistema de abastecimento, a identificação de perigos, a avaliação dos riscos e o estabelecimento de medidas necessárias para os controlar, abarcando todas as etapas do sistema, desde a bacia de captação até à torneira do consumidor. Uma das grandes dificuldades na aplicação deste conceito situa-se nas redes prediais urbanas, um

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24

Aurich, Allan. "Modelle zur Beschreibung der Verkehrssicherheit innerörtlicher Hauptverkehrsstraßennetze unter besonderer Berücksichtigung der Umfeldnutzung." Doctoral thesis, 2012. https://tud.qucosa.de/id/qucosa%3A27205.

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In der Arbeit wird eine Methodik einer zusammenhängenden Analyse und modellhaften Beschreibung der Verkehrssicherheit in städtischen Hauptstraßennetzen am Beispiel der Stadt Dresden entwickelt. Die dabei gewonnenen Modelle dienen der Abschätzung von Erwartungswerten von Unfallhäufigkeiten mit und ohne Personenschaden unter Berücksichtigung der Verkehrsbeteiligungsart. Die Grundlage bilden multivariate Regressionsmodelle auf Basis verallgemeinerter linearer Modelle (GLM). Die Verwendung verallgemeinerter Regressionsmodelle erlaubt eine Berücksichtigung von Verteilungen, die besser geeignet sin

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