Dissertations / Theses: 'Telecommunication infrastructure'

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Case, Michael A. "Network infrastructure essentials course development." [Denver, Colo.] : Regis University, 2006. http://165.236.235.140/lib/MCase2007.pdf.

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Jarupasin, Kritchasorn. "Essays on economic growth, public expenditure and telecommunication infrastructure." Thesis, University of Exeter, 2016. http://hdl.handle.net/10871/30274.

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This thesis consists of four studies, presented in three main essays, empirically linking economic growth to public expenditure and telecommunication infrastructure using four different sample groups of countries with data from 1972-2012. In the second chapter, in Study 1, the permanent growth effects of fiscal policy are investigated across countries with different income levels using the public-policy endogenous growth model, where public spending is classified by function. The endogeneity problems associated with taxes and investment are taken into account, as is a possible non-linear relationship between government expenditure and economic growth. The results have shown that gross capital formation is the only control variable that has a significant positive coefficient in all growth regressions, while the evidence of conditional convergence hypothesis is reaffirmed. An increase in transportation and communication spending is conducive to growth in both developing and high-income countries, whereas other types of spending are not. In the third chapter, in Study 2, we firstly consider the relationship between public spending and growth with a government budget constraint. The evidence for productive expenditure being conducive to growth only exists in high-income OECD countries. Distortionary taxes are shown to have growth-deteriorating effects in both the developing country and the high-income OECD country groups. When considering the relationship between public spending and long-run GDP per capita level in Study 3, it was found that an increase in total spending financed by non-distortionary taxes enhances the per capita level of GDP in high-income OECD countries. Regardless of implicit financing elements, increases in total spending in developing countries cannot promote long-run increases in GDP per capita levels. In developing countries, increases in the shares of health care and general public services in spending can improve long-run GDP per capita. In high-income OECD countries, increasing in the share of education in spending is conducive to increasing per capita GDP in the long-run. In the fourth chapter, in Study 4, we assess the link between telecommunication infrastructure and economic development. The system of equations is used while considering stationarity and cointegration of variables in the models. The output dividend of fixed telephones in the period from 1975 to 1990 for the group of high-income OECD countries is higher than for developing countries. When considering mobile phone infrastructure, an increase in penetration has positive effects on aggregate output in developing countries for the period from 1990 to 2012. There is only weak evidence that increased mobile phone penetration in high-income OECD countries has a negative effect. When fixed telephone penetration is low, an increase in mobile phone penetration enhances aggregate output. When fixed telephone penetration is already high, an increase in mobile phone penetration might have deteriorating effects. The results have shown that mobile phone and fixed telephone infrastructures are, in fact, substitutes for one another rather than complements.

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Gasiea, Yousef Ali. "An analytical decision approach to rural telecommunication infrastructure selection." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/an-analytical-decision-approach-to-rural-telecommunication-infrastructure-selection(9238e16c-71e6-4b5c-b9c6-0b824bd0e3ed).html.

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Telecommunications infrastructure is recognised as the fundamental factor for economic and social development for it is the platform of communication and transaction within and beyond geographical boundaries. It is a necessity for social benefits, growth, connection and competition, more in the rural communities in developing countries. Its acquisition entails great investment, considering the emergence of various technologies and thereby making the selection a critical task. The research described in this thesis is concerned with a comprehensive examination and analytical procedures on the selection of technologies, for rural telecommunications infrastructure. A structured systematic approach is deemed necessary to reduce the time and effort in the decision-making process. A literature review was carried out to explore the knowledge in the areas of Multi-Criteria Decision-Making (MCDM) approaches, with particular focus on the analytical decision processes. The findings indicate that, the Analytic Hierarchy Process (AHP)/AnalyticNetwork Process (ANP) are powerful decision methods capable of modelling such acomplex problem. Primarily, an AHP model is formulated, however, since the problem at hand involves many interactions and dependencies, a more holistic method is required to overcome its shortcomings by allowing for dependencies and feedback within the structure. Hence, the ANP is adopted and its network is established to represent the problem, making way to telecommunications experts to provide their judgements on the elements within the structure. The data collected are used to estimate the relative influence from which the overall synthesise is derived, forming a general ANP model for such a rural telecommunications selection problem. To provide a more wide-ranging investigation regarding selecting a potential rural telecommunications infrastructure, another systematic analysis that utilises a BOCR-based (Benefits, Opportunities, Costs and Risks) ANP was conducted. The obtained results indicate that Microwave technology is the most preferred alternative within the context of the developing countries. Sensitivity analysis was performed to show robustness of the obtained results. This framework provides the structure and the flexibility required for such decisions. It enables decision makers to examine the strengths and weaknesses of the problem, by comparing several technology options, with respect to appropriate gauge for judgement. Moreover, using the ANP, the criteria for such a technology selection task were clearly identified and the problem was structured systematically. A case study was carried out in Libya involving its main telecommunications infrastructure provider to demonstrate how such rural technology selection decisions can be made within a specific developing country's rural area. Based on the results of this case study that were in agreement with the focus group's expectations, it can be concluded that the application of the ANP in the selection of telecommunications technology, is indeed beneficial. In addition, it is believed that telecommunications planners could, by the use of data pertaining to another rural area, utilise the developed model to propose appropriate solutions. If new criteria and/or alternatives emerge to satisfy changing business needs, they can also be included in the ANP model.

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Liu, Yanchun. "Impacts of telecommunications infrastructure and its spillover effects on regional economic growth in China." Fairfax, VA : George Mason University, 2008. http://hdl.handle.net/1920/3364.

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Thesis (Ph.D.)--George Mason University, 2008.
Vita: p. 163. Thesis director: Kingsley E. Haynes. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Public Policy. Title from PDF t.p. (viewed Jan. 11, 2009). Includes bibliographical references (p. 147-162). Also issued in print.

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Bria, Aurelian. "Hybrid cellular-broadcasting infrastructure systems : radio resource management issues." Licentiate thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3922.

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Lovelock, Peter. "The evolution of China's national information infrastructure (NII) : a policy-making analysis /." Thesis, Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20715389.

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Young, Charles P. "Method or madness federal oversight structures for critical infrastructure protection." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FYoung.pdf.

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Thesis (M.A. in National Security Studies (Homeland Defense and Security))--Naval Postgraduate School, December 2007.
Thesis Advisor(s): Lawson, Letitia ; Zolin, Roxanne. "December 2007." Description based on title screen as viewed on January 25, 2008. Includes bibliographical references (p. 55-60). Also available in print.

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ISKANDAR, DODDY ADITYA. "INTEGRATING TELECOMMUNICATIONS INFRASTRUCTURE IN DOWNTOWN REVITALIZATION: THE CASE STUDY OF GARY, INDIANA." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin997967708.

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Johansson, Klas. "Cost efficient provisioning of wireless access : infrastructure cost modeling and multi-operator resource sharing." Licentiate thesis, KTH, Skolan för elektro- och systemteknik (EES), 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-580.

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Knoll, James A. "Convergence of the Naval information infrastructure /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FKnoll.pdf.

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Schneider, Kevin Paul. "Analysis of critical infrastructure interactions /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/5990.

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Cubukcu, Kemal Mert. "Geography and the cost of network infrastructure." Columbus, Ohio : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osuosu1070245725.

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Thesis (Ph. D.)--Ohio State University, 2003.
Title from first page of PDF file. Document formatted into pages; contains xvi, 188 p.; also includes graphics (some col.). Includes abstract and vita. Advisor: Jean-Michel Guldmann, Dept. of City and Regional Planning. Includes bibliographical references (p. 164-170).

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Markendahl, Jan. "Mobile Network Operators and Cooperation : A Tele-Economic Study of Infrastructure sharing and Mobile Payment Services." Doctoral thesis, KTH, Kommunikationssystem, CoS, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-28756.

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Mobile network operators are currently faced with a number of challenges at the market. The revenues from voice services have decreased the last couple of years. Mobile broadband access services are being adopted and the demand is increasing. The increasing traffic volumes require investments in order to increase the network capacity. This development leads to a large interest in network solutions that can offer high capacity and low cost. Besides the use of more efficient radio access technology mobile network operators use strategies for network deployment and operation involving other market actors. Operators share networks with competitors or outsource network deployment and operation to other companies, e.g. suppliers of network equipment. In these examples the mobile operators cooperate about the networks, the relations to end-users are the same as if the operator would operate the network on its own. However, in other areas other actors enter the market for mobile services where mobile operators traditionally have been the dominant player. Handset manufacturers and Internet companies offer value added services and applications to the end-users. They also establish relations with customers of the mobile operators. Hence, mobile operators look into new technical solutions and services in order to reduce costs and find new services and sources of revenues. Many of the networking solutions and services require that the operator cooperates with some other actor. In this PhD thesis cooperation strategies of mobile network operators are analyzed including cooperation with competitors, customers and different types of partners. The partner can be a provider of a non-telecom service like public transportation, financial institutes or third parties taking intermediary roles. The main research questions in the thesis revolves around why and how mobile operators cooperate. The drivers for cooperation and the way the cooperation is organized is analyzed for a number of cases. Three types of services and markets are analyzed: - Public mobile broadband access services - Services and solutions for indoor wireless access - Mobile payment, ticketing and contactless services A number of technical solutions, business concepts and different types of cooperation and business scenarios have been investigated. Two overall research questions that are applicable for all cases of cooperation are identified for the analysis. - What are the main drivers for a specific type of cooperation? - In what ways can the actors organize the cooperation?
QC 20110121
Affordable Wireless Broadband Access
Force

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Chu, Carlson. "Development of broadband information infrastructure in Hong Kong /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19876804.

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Mohror, Kathryn Marie. "Infrastructure For Performance Tuning MPI Applications." PDXScholar, 2004. https://pdxscholar.library.pdx.edu/open_access_etds/2660.

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Clusters of workstations are becoming increasingly popular as a low-budget alternative for supercomputing power. In these systems,message-passing is often used to allow the separate nodes to act as a single computing machine. Programmers of such systems face a daunting challenge in understanding the performance bottlenecks of their applications. This is largely due to the vast amount of performance data that is collected, and the time and expertise necessary to use traditional parallel performance tools to analyze that data. The goal of this project is to increase the level of performance tool support for message-passing application programmers on clusters of workstations. We added support for LAM/MPI into the existing parallel performance tool,P aradyn. LAM/MPI is a commonly used, freely-available implementation of the Message Passing Interface (MPI),and also includes several newer MPI features,such as dynamic process creation. In addition, we added support for non-shared filesystems into Paradyn and enhanced the existing support for the MPICH implementation of MPI. We verified that Paradyn correctly measures the performance of the majority of LAM/MPI programs on Linux clusters and show the results of those tests. In addition,we discuss MPI-2 features that are of interest to parallel performance tool developers and design support for these features for Paradyn.

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Hultell, Johan. "Cooperative and non-cooperative wireless access : Resource and infrastructure sharing regimes." Doctoral thesis, KTH, Kommunikationssystem, CoS, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9680.

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Future wireless networks will combine multiple radio technologies and subsystems, possibly managed by competing network providers. For such systems it may be advantageous to let the end nodes (terminals) make some or all of the resource management decisions. In addition to reducing complexity and costs, increasing redundancy, and facilitating more timely decisions; distributed resource sharing regimes can decouple the individual subsystems. Decoupled subsystems could be desirable both because competing operators can be business-wise separated and because it allows new technologies to be added (removed) in a modular fashion. However, distributed regimes can also lead to “selfish” wireless nodes who only try to maximize their own performance. The first part of this dissertation studies if selfish nodes can make efficient use of wireless resources, using multiaccess and network layers as examples. The related problems are formulated as noncooperative games between nodes. To maintain tractability nodes are confined to simple strategies that neither account for future payoffs nor allow for coordination. Yet, it is demonstrated that selfish nodes can achieve comparable performance to traditional protocols. These results should be interpreted as an argument in favor of distributed regimes. The second part of this dissertation evaluates the effects of multi-provider network architectures where users can roam freely across all networks. From a supply side perspective the benefits are improved path gain statistics and the fact that different networks may have non-overlapping busy hours. Several network configurations are analyzed and it is shown that cooperation between symmetric providers can yield significant capacity gains for both downlink and uplink; even if the providers have nearly collocated sites. When the providers have different site densities the gains from cooperation are reduced and the provider with a sparse network always gains more from cooperating. This suggests that initially, voluntary cooperation may be limited to some special cases. Lastly, the architecture is analyzed in a context where the providers compete for users on a per session basis by offering access at different prices. Although such architectures currently only exist in a few special cases, they could emerge in domestic markets where the costs to switch and search for new networks are low. Based on a game theoretic formulation it is shown that a competitive market for wireless access can be advantageous for both users and providers. The results presented suggest that the advantages of cooperation of competing providers occur in more than just a few cases.
QC 20100812

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Grill, Andreas, and Robin Englund. "Analysis of Fix‐point Aspects for Wireless Infrastructure Systems." Thesis, Karlstad University, Faculty of Technology and Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-4550.

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A large amount of today’s telecommunication consists of mobile and short distance wireless applications, where the effect of the channel is unknown and changing over time, and thus needs to be described statistically. Therefore the received signal can not be accurately predicted and has to be estimated. Since telecom systems are implemented in real-time, the hardware in the receiver for estimating the sent signal can for example be based on a DSP where the statistic calculations are performed. A fixed-point DSP with a limited number of bits and a fixed binary point causes larger quantization errors compared to floating point operations with higher accuracy.

The focus on this thesis has been to build a library of functions for handling fixed-point data. A class that can handle the most common arithmetic operations and a least squares solver for fixed-point have been implemented in MATLAB code.

The MATLAB Fixed-Point Toolbox could have been used to solve this task, but in order to have full control of the algorithms and the fixed-point handling an independent library was created.

The conclusion of the simulation made in this thesis is that the least squares result are depending more on the number of integer bits then the number of fractional bits.

En stor del av dagens telekommunikation består av mobila trådlösa kortdistanstillämpningar där kanalens påverkan är okänd och förändras över tid. Signalen måste därför beskrivas statistiskt, vilket gör att den inte kan bestämmas exakt, utan måste estimeras. Eftersom telekomsystem arbetar i realtid består hårdvaran i mottagaren av t.ex. en DSP där de statistiska beräkningarna görs. En fixtals DSP har ett bestämt antal bitar och fast binärpunkt, vilket introducerar ett större kvantiseringsbrus jämfört med flyttalsoperationer som har en större noggrannhet.

Tyngdpunkten på det här arbetet har varit att skapa ett bibliotek av funktioner för att hantera fixtal. En klass har skapats i MATLAB-kod som kan hantera de vanligaste aritmetiska operationerna och lösa minsta-kvadrat-problem.

MATLAB:s Fixed-Point Toolbox skulle kunna användas för att lösa den här uppgiften men för att ha full kontroll över algoritmerna och fixtalshanteringen behövs ett eget bibliotek av funktioner som är oberoende av MATLAB:s Fixed-Point Toolbox.

Slutsatsen av simuleringen gjord i detta examensarbete är att resultatet av minsta-kvadrat-metoden är mer beroende av antalet heltalsbitar än antalet binaler.

fixtal, telekommunikation, DSP, MATLAB, Fixed-Point Toolbox, minsta-kvadrat-lösning, flyttal, Householder QR faktorisering, saturering, kvantiseringsbrus

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Qiang, Qiang. "Network efficiency/performance measurement with vulnerability and robustness analysis with application to critical infrastructure." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/dissertations/AAI3372272/.

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Chu, Carlson, and 朱嘉遜. "Development of broadband information infrastructure in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31268742.

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Pop, Septimia-Cristina. "Conception et développement d'une infrastructure de communication collaborative." Phd thesis, Grenoble INPG, 2005. http://tel.archives-ouvertes.fr/tel-00081666.

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Ces dernières années le déploiement de réseaux sans fil a changé le paysage des réseaux informatiques. Grâce à l'évolution de la technologie informatique un utilisateur peut étendre son environnement de travail habituel en bénéficiant de la connectivité réseau accrue. La gestion souple de la mobilité lui permet d'accéder à différents environnements de collaboration. Cette thèse considère le problème de partage de l'affichage d'applications dans les conditions de la diversification des contextes de collaboration. Étant donné le déploiement du système de fenêtrage X et du système d'affichage à distance VNC, nous les avons choisi comme base pour notre travail. D'une part, nous avons conçu un système de partage d'applications X qui gagne en flexibilité par son interface du contrôle d'évènements d'entrée. Le système repose sur un multiplexeur de flots X conçu comme un service actif qui peut être chargé dynamiquement sur une plate-forme générique. D'autre part, nous avons transformé le système VNC en un système coopératif flexible. Le nouveau système est construit autour d'un proxy dynamiquement contrôlé à distance. Le proxy peut être programmé pour gérer différentes sessions de collaboration. Chaque session de collaboration peut utiliser des flots de données de VNC multiples. L'ouverture du système vers des politiques de contrôle d'évènements entrée permet l'adaptation au contexte de coopération. Finalement nous présentons des nouvelles perspectives concernant les possibilités de collaboration assistée par la technologie informatique dans un réseau informatique quelconque.

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Ordonez, Michael A. "Critical infrastructure protection how to assess and provide remedy to vulnerabilities in telecom hotels /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Sep%5FOrdonez.pdf.

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Thesis (M.A. in Security Studies (Homeland Security and Defense))--Naval Postgraduate School, September 2006.
Thesis Advisor(s): Lewis, Ted. "Sepetember 2006." Includes bibliographical references (p. 81-89). Also available in print.

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FORERO, MARIA DEL PILAR BAQUERO. "Communication Technologies, Infrastructure and Institutions as Determinants of Income and Technical Efficiency: Evidence and Implications for National and Supranational Telecommunication Policies." Kyoto University, 2012. http://hdl.handle.net/2433/158068.

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de, Beste Eugene. "Enabling the processing of bioinformatics workflows where data is located through the use of cloud and container technologies." University of the Western Cape, 2019. http://hdl.handle.net/11394/6767.

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>Magister Scientiae - MSc
The growing size of raw data and the lack of internet communication technology to keep up with that growth is introducing unique challenges to academic researchers. This is especially true for those residing in rural areas or countries with sub-par telecommunication infrastructure. In this project I investigate the usefulness of cloud computing technology, data analysis workflow languages and portable computation for institutions that generate data. I introduce the concept of a software solution that could be used to simplify the way that researchers execute their analysis on data sets at remote sources, rather than having to move the data. The scope of this project involved conceptualising and designing a software system to simplify the use of a cloud environment as well as implementing a working prototype of said software for the OpenStack cloud computing platform. I conclude that it is possible to improve the performance of research pipelines by removing the need for researchers to have operating system or cloud computing knowledge and that utilising technologies such as this can ease the burden of moving data.

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Alcena, Reynolds. "Information Technology Infrastructure: Global Economy and National Development in Haiti." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/4830.

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Political and environmental chaos recently experienced in Haiti has damaged the economic sector and telecommunication infrastructure. Developmental data from Haiti show 3 major trends: inadequate social and economic development, insufficient benefits from the global economy, and poorly planned information technology infrastructure (ITI). The specific problem addressed in this study is a knowledge gap in the views of stakeholders within Haiti's national culture on how the country's ITI can be developed to better engage Haiti in 21st century global and digital economy. The purpose of this qualitative case study was to explore the views of 48 expert participants regarding ITI development within Haiti's national culture to better engage Haiti with the 21st century global and digital economy. To satisfy the goal of this exploratory research a case study research design was used, and data were collected from multiple sources including in-depth interviews of 48 participants, observational field notes, and archival documentation. The analysis of the archival data, online surveys, and semi-structured interviews of expert informants revealed that nationwide broadband internet availability has been achieved, which has resulted in internet usage increasing from 2% in 2002 to 12% in 2009. The study participants noted the lack of reliable access to electricity limits the implementation of ITI in the nation. Legislation and financial investment are needed to improve ITI in Haiti. The academic significance and social change implications of the study include filling the knowledge gap of the status of ITI in Haiti, helping the national development of a modernized ITI well-connected to the global economy, and a better quality of life for Haiti's people.

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Shooshtary, Samaneh. "Development of a MATLAB Simulation Environment for Vehicle-to-Vehicle and Infrastructure Communication Based on IEEE 802.11p." Thesis, University of Gävle, Department of Technology and Built Environment, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-3463.

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This thesis describes the simulation of the proposed IEEE 802.11p Physical layer (PHY). A MATLAB simulation is carried out in order to analyze baseband processing of the transceiver. Orthogonal Frequency Division Multiplexing (OFDM) is applied in this project according to the IEEE 802.11p standard, which allows transmission data rates from 3 up to 27Mbps. Distinct modulation schemes, Binary Phase Shift Keying (BPSK), Quadrate Phase Shift Keying (QPSK) and Quadrature Amplitude modulation (QAM), are used according to differing data rates. These schemes are combined with time interleaving and a convolutional error correcting code. A guard interval is inserted at the beginning of the transmitted symbol in order to reduce the effect of Intersymbol Interference (ISI). The Viterbi decoder is used for decoding the received signal. Simulation results illustrate the Bit Error Rate (BER), Packet Error Rate (PER) for different channels. Different channel implementations are used for the simulations. In addition a ray-tracing based software tool for modelling time variant vehicular channels is integrated into SIMULINK. BER versus Signal to Noise Ratio (SNR) statistics are as the basic reference for the physical layer of the IEEE 802.11p standard for all vehicular wireless network simulations.

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Bocquet, Aurelien. "Infrastructure logicielle multi-modèles pour l'accès à des servcies en mobilité." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2008. http://tel.archives-ouvertes.fr/tel-00357495.

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Les intergiciels sont aujourd'hui incontournables lorsqu'il s'agit de développer des applications réparties. Des simples Web Services aux architectures n-tiers, d'une unique communication client / serveur à un réseau dynamique pair-à-pair, chaque conception requiert des outils adaptés et performants. En complément de chaque utilisation spécifique des intergiciels, leur contexte de déploiement nécessite des mécanismes particuliers afin de s'adapter au mieux à la situation.

Face à ces besoins, les intergiciels proposent des modèles de programmation et de communication différents, fournissant des moyens de communication efficaces dans certaines situations.

La mobilité introduit une problématique supplémentaire pour ces intergiciels. D'une part l'interopérabilité devient inévitable ; le nombre de composants répartis susceptibles d'être utilisés en mobilité est immense, et les composants peuvent être développés avec différents intergiciels. D'autre part le contexte varie, et avec lui les conditions et capacités de communication évoluent.

Nous traitons dans cette thèse des impératifs actuels d'un intergiciel en mobilité. Nous proposons pour cela une approche multi-modèles, basée sur les travaux actuels dans ce domaine, et présentant des concepts novateurs.

Cette approche se compose d'un modèle de programmation générique, proposant différents types de communications synchrones, asynchrones, et basées sur des patrons de conception. Elle se compose également d'une combinaison de modèles de communication, assurant l'interopérabilité avec les intergiciels standards, et offrant des possibilités de communications enrichies, capables de s'adapter aux changements de contextes.
Des politiques d'adaptation définissent les règles de combinaison des modèles en fonction d'observations du contexte, afin de se comporter au mieux face à ses évolutions.
Des mécanismes d'adaptation dynamique permettent à notre approche de proposer une prise en compte en temps réel des changements de contexte, et permettent également de reconfigurer le système pendant son exécution afin de répondre à des besoins de déploiement.

Nous avons validé notre approche au travers d'une application concrète aux problèmes engendrés par l'utilisation d'un proxy Internet à bord des trains : le développement d'un greffon multi-modèles a illustré et justifié notre approche, et l'évaluation de ce greffon a montré les bénéfices de celle-ci face aux changements de contexte.
Pour implémenter entièrement notre approche et proposer ainsi un intergiciel multi-modèles, nous avons conçu et développé notre infrastructure logicielle multi-modèles, proposant tous les concepts de l'approche. Une première version "statique" puis une version finale offrant les mécanismes d'adaptation dynamique ont été implémentées et permettent ainsi de profiter des bénéfices de notre approche multi-modèles.

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Decotigny, David. "Une infrastructure de simulation modulaire pour l'évaluation de performances de systèmes temps-réel." Phd thesis, Université Rennes 1, 2003. http://tel.archives-ouvertes.fr/tel-00003582.

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Un système informatique est temps-réel lorsque ses traitements doivent vérifier des propriétés d'ordre à la fois logique et temporel. Dans ce travail, nous proposons un outil de simulation pour l'évaluation de tels systèmes. Il peut venir compléter les méthodes sûres d'analyse statique, en particulier lorsque le comportement temporel du système ou de son environnement est insuffisamment caractérisé. L'outil met l'accent sur la faculté de personnalisation du système simulé, la grande fidélité des comportements temporels reproduits grâce à une granularité de simulation ajustable, la possibilité de réutiliser du code d'application existant, et l'efficacité de simulation. Nous présentons aussi un modèle objet générique pour l'ordonnancement dynamique couvrant un grand nombre d'ordonnanceurs existants, et qui a été évalué grâce à l'outil. Nous détaillons enfin les moyens de prise en compte de la granularité de l'horloge système dans ces algorithmes, ainsi qu'une évaluation de leur impact.

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Teixeira, David José Miranda. "Telecommunications infrastructure sharing." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/18716.

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Mestrado em Engenharia Eletrónica e Telecomunicações
As telecomunicações móveis têm enfrentado enormes desafios em todo o mundo, com especial ênfase nos países emergentes. A sua crescente importância para o crescimento das economias dos países tornam a sua presença essencial num mundo cada vez mais global e tecnológico. A partilha de infraestruturas de telecomunicações torna a implementação de comunicações móveis numa dada região ou país mais facilitada. No caso de Moçambique, que é dos países mais pobres do mundo, a partilha seria uma estratégia interessante de forma a permitir um rápido crescimento dos serviços de telecomunicações. Neste projeto, foi desenvolvida uma ferramenta que auxilia o estudo tecno-económico de cenários de partilha de infraestruturas de telecomunicações. Esta ferramenta permitiu assim criar cenários para a realidade Moçambicana. Esta dissertação pretende contribuir para o desenvolvimento da área das telecomunicações em mercados emergentes.
Mobile telecommunications have been facing a vast number of challenges across the globe, with special emphasis on emerging countries. Their increasing importance for economic growth of countries make the presence of infrastructure essential in a progressively more global and technological world. Sharing telecommunication infrastructures can facilitate the implementation of mobile communications in a giving region or country. In the case of Mozambique, one of the poorest country of the world, a sharing strategy could potentially allow for a rapid expansion of telecommunication services. In this work project, a tool that supports the techno-economic study of scenarios of telecommunication infrastructure sharing was developed. Through this mechanism, scenarios that consider the Mozambican’s reality have been set up. This dissertation aims then to contribute to the development of the telecommunications sector in emerging markets.

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Srisarkun, Vilasinee. "Efficiency in utilizing ICT infrastructure in developing countries a case study of the Royal Thai Police's attitudes to the adoption of an image retrieval application for eyewitness identification /." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050303.110027/index.html.

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Liu, Tianwen. "China telecommunications policy and infrastructure." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10959.

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Ramos, José Pedro Guedes Simões. "Telecommunications infrastructure sharing in Mozambique." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13612.

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Mestrado em Engenharia Eletrónica e Telecomunicações
The mobile telecommunications market faces growing challenges throughout the world, especially in the emerging markets on the African continent. The increase of private investment in different areas combined with the need to provide swift, sustainable and efficient answers from an economic and financial perspective has become urgent not only for the desired growth of these markets, but also for their continued development. The market of mobile telecommunications in Mozambique, the country chosen for our study, presents specific challenges in the network coverage in remote and rural areas. In one of the poorest countries in the world, where mobile communications prevail over fixed-network connections, and considering the importance of continuing to attract investment in this sector, without neglecting the least attractive regions from a financial perspective, it is important to study and explore the different technological models which can be implemented. This dissertation identifies the main investment constraints behind the reduced mobile coverage in the least attractive regions in Mozambique and studies the applicability and sustainability of implementing the concept of Neutral Operator associated with infrastructure sharing as one of the solutions to be adopted. It is our purpose that this study may contribute to the development of the mobile telecommunications market in this emerging market and that the Neutral Operator Model may be adapted and improved as needed in order to meet other growth and development objectives for Mozambique.
O mercado das telecomunicações móveis enfrenta desafios crescentes em todo o mundo, especialmente nos mercados emergentes do continente Africano. O aumento do investimento privado em diferentes sectores, associado à necessidade de fornecer respostas rápidas, sustentáveis e eficientes do ponto de vista económico-financeiro tornou-se premente não só para o desejado crescimento destes mercados, mas também para o seu continuado desenvolvimento. O mercado das telecomunicações móveis em Moçambique, país sobre o qual nos focamos neste estudo, apresenta desafios específicos no que respeita à cobertura de comunicações móveis nas áreas mais remotas e rurais. Num dos países mais pobres do mundo, onde a rede móvel prevalece sobre a rede fixa, e sendo importante continuar a atrair investimento neste sector, não descurando as áreas menos atrativas do ponto de vista financeiro, importa estudar e explorar os diferentes modelos tecnológicos que podem ser implementados. Esta dissertação identifica os principais constrangimentos que levam ao reduzido investimento na cobertura móvel nas áreas menos apetecíveis para investidores em Moçambique, estudando a aplicabilidade e sustentabilidade do conceito de Operador Neutro associado à partilha de infraestruturas como uma das soluções a adotar. Pretende-se que este trabalho contribua para o desenvolvimento da área das telecomunicações móveis neste mercado emergente e que esta proposta possa ser aperfeiçoada de modo a contribuir para outros objetivos de crescimento e desenvolvimento de Moçambique.

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Grumert, Ellen. "Cooperative Variable Speed Limit Systems : Modeling and Evaluation using Microscopic Traffic Simulation." Licentiate thesis, Linköpings universitet, Kommunikations- och transportsystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-106926.

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During the last decades the road traffic has increased tremendously leading to congestion, safety issues and increased environmental impacts. As a result, many countries are continuously trying to find improvements and new solutions to solve these issues. One way of improving the traffic conditions is by the use of so called intelligent transport systems, where information and communication technologies are being used for traffic management and control. One such system commonly used for traffic management purposes are variable speed limit systems. These systems are making use of signs to show speed limits adjusted to the prevailing road or traffic conditions. The rapid development in telecommunication technologies has enabled communication between vehicles, and between vehicles and the infrastructure, so called cooperative systems. This opens up for the possibility to further improve the performance of a standard variable speed limit system by adding cooperative system features. The overall aim of this thesis is to investigate the potential benefits of incorporating infrastructure to vehicle communication and autonomous control to an existing variable speed limit system. We show how such a cooperative variable speed limit system can be modeled and evaluated by the use of microscopic traffic simulation. Results from the evaluation indicate increased flow harmonization in terms of narrowing of the acceleration rate distribution and reduced exhaust emissions. Further, we compare four control algorithms for deciding on speed limits in variable speed limit systems. Differences in the resulting traffic performance between the control algorithms are quantified by the use of microscopic traffic simulation. It is concluded that the dened objective for the algorithms have a decisive influence on the effects of the variable speed limit system. The results from this thesis are useful for further development of variable speed limit systems, both with respect to incorporating cooperative features and by improving the speed setting control algorithms.

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Lancia, Julien. "Infrastrucuture orientée service pour le développement d'applications ubiquitaires." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2008. http://tel.archives-ouvertes.fr/tel-00406237.

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Un grand nombre de périphériques actuels sont dotés de connexions réseaux qui permettent d'accéder à leurs fonctionnalités au travers d'un réseau informatique. Les applications ubiquitaires visent à structurer ces fonctionnalités pour les mettre au service de l'utilisateur.

Les environnements ubiquitaires sont caracttérisés par une disponibilité dynamique des fonctionnalités et une hétérogénéité matérielle et logicielle des périphériques. De plus les applications doivent s'adapter en fonction du contexte des utilisateurs.

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Gallard, Jérôme. "Flexibilité dans la gestion des infrastructures informatiques distribuées." Phd thesis, Université Rennes 1, 2011. http://tel.archives-ouvertes.fr/tel-00625278.

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Cette thèse s'intéresse à la flexibilité dans les infrastructures informatiques distribuées du point de vue de leurs administrateurs et utilisateurs. Pour les utilisateurs, il s'agit de trouver au moment où ils en ont besoin des ressources matérielles adaptées avec un environnement personnalisé à l'exécution de leur application. Pour les administrateurs, il s'agit de définir les politiques d'allocation des ressources (politiques d'usage et de sécurité) pour les applications des utilisateurs. Nous avons étudié la problématique de la flexibilité dans le contexte des grilles et des centrales numériques (CN). Tout d'abord, nous avons conçu et mis en oeuvre le système Saline qui s'appuie sur la virtualisation pour permettre l'exécution de tout type de tâche en mode préemptif dans les grilles. Nous avons également proposé le système Grillade qui combine les mécanismes de flexibilité offerts par les grilles et les CN pour d'une part, étendre dynamiquement une grille avec des ressources virtuelles fournies par des CN et d'autre part, construire des nuages de type IaaS fédérant les ressources de plusieurs sites. Grillade étend le système de grille XtreemOS. Il permet en outre grâce à la technologie de système à image unique de proposer aux utilisateurs des machines virtuelles exécutées sur une agrégation de nœuds. Enfin, nous proposons un formalisme permettant de classer les systèmes de gestion de ressources offrant de la flexibilité et de définir des règles pour les combiner. Le système Tropicbird qui s'appuie sur ce formalisme met en œuvre, à la demande, des plates-formes virtuelles spécifiées par les utilisateurs sur une infrastructure matérielle.

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Correa, Lisa Gail. "The U.K. model of telecommunications : justifications and effects of infrastructure competition." Thesis, Queen Mary, University of London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406339.

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Akhlaq, Monis. "Improved performance high speed network intrusion detection systems (NIDS) : a high speed NIDS architectures to address limitations of packet loss and low detection rate by adoption of dynamic cluster architecture and traffic anomaly filtration (IADF)." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5377.

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Intrusion Detection Systems (IDS) are considered as a vital component in network security architecture. The system allows the administrator to detect unauthorized use of, or attack upon a computer, network or telecommunication infrastructure. There is no second thought on the necessity of these systems however; their performance remains a critical question. This research has focussed on designing a high performance Network Intrusion Detection Systems (NIDS) model. The work begins with the evaluation of Snort, an open source NIDS considered as a de-facto IDS standard. The motive behind the evaluation strategy is to analyze the performance of Snort and ascertain the causes of limited performance. Design and implementation of high performance techniques are considered as the final objective of this research. Snort has been evaluated on highly sophisticated test bench by employing evasive and avoidance strategies to simulate real-life normal and attack-like traffic. The test-methodology is based on the concept of stressing the system and degrading its performance in terms of its packet handling capacity. This has been achieved by normal traffic generation; fussing; traffic saturation; parallel dissimilar attacks; manipulation of background traffic, e.g. fragmentation, packet sequence disturbance and illegal packet insertion. The evaluation phase has lead us to two high performance designs, first distributed hardware architecture using cluster-based adoption and second cascaded phenomena of anomaly-based filtration and signature-based detection. The first high performance mechanism is based on Dynamic Cluster adoption using refined policy routing and Comparator Logic. The design is a two tier mechanism where front end of the cluster is the load-balancer which distributes traffic on pre-defined policy routing ensuring maximum utilization of cluster resources. The traffic load sharing mechanism reduces the packet drop by exchanging state information between load-balancer and cluster nodes and implementing switchovers between nodes in case the traffic exceeds pre-defined threshold limit. Finally, the recovery evaluation concept using Comparator Logic also enhance the overall efficiency by recovering lost data in switchovers, the retrieved data is than analyzed by the recovery NIDS to identify any leftover threats. Intelligent Anomaly Detection Filtration (IADF) using cascaded architecture of anomaly-based filtration and signature-based detection process is the second high performance design. The IADF design is used to preserve resources of NIDS by eliminating large portion of the traffic on well defined logics. In addition, the filtration concept augment the detection process by eliminating the part of malicious traffic which otherwise can go undetected by most of signature-based mechanisms. We have evaluated the mechanism to detect Denial of Service (DoS) and Probe attempts based by analyzing its performance on Defence Advanced Research Projects Agency (DARPA) dataset. The concept has also been supported by time-based normalized sampling mechanisms to incorporate normal traffic variations to reduce false alarms. Finally, we have observed that the IADF has augmented the overall detection process by reducing false alarms, increasing detection rate and incurring lesser data loss.

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Ranga, Memory Munashe. "Improving the robustness and effectiveness of rural telecommunication infrastructures in Dwesa South Africa." Thesis, University of Fort Hare, 2011. http://hdl.handle.net/10353/d1001113.

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In recent years, immense effort has been channelled towards the Information and Technological development of rural areas. To support this development, telecommunication networks have been deployed. The availability of these telecommunication networks is expected to improve the way people share ideas and communicate locally and globally, reducing limiting factors like distance through the use of the Internet. The major problem for these networks is that very few of them have managed to stay in operation over long periods of time. One of the major causes of this failure is the lack of proper monitoring and management as, in some cases, administrators are located far away from the network site. Other factors that contribute to the frequent failure of these networks are lack of proper infrastructure, lack of a constant power supply and other environmental issues. A telecommunication network was deployed for the people of Dwesa by the Siyakhula Living Lab project. During this research project, frequent visits were made to the site and network users were informally interviewed in order to gain insight into the network challenges. Based on the challenges, different network monitoring systems and other solutions were deployed on the network. This thesis analyses the problems encountered and presents possible and affordable solutions that were implemented on the network. This was done to improve the network‟s reliability, availability and manageability whilst exploring possible and practical ways in which the connectivity of the deployed telecommunication network can be maintained. As part of these solutions, a GPRS redundant link, Nagios and Cacti monitoring systems as well as Simple backup systems were deployed. v Acronyms AC Access Concentrators AMANDA Automatic Marylyn Network Disk Archiver CDMA Code Divison Multiple Access CGI Common Gateway Interface.

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Maureira, Juan-Carlos. "Internet sur rails." Phd thesis, Université de Nice Sophia-Antipolis, 2011. http://tel.archives-ouvertes.fr/tel-00594951.

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Cette thèse propose une nouvelle méthode pour fournir une connexion réseau à des véhicules au cours de trajets prédéterminés (trains, métros, autobus urbains, etc.). La communication entre le véhicule et l'infrastructure réseau est basée uniquement sur la technologie WiFi. Les contributions de ce travail sont d'une part la conception d'une méthode pour réaliser le handover horizontal (entre bornes WiFi), et d'autre part la modélisation et l'analyse de topologies pour le réseau d'infrastructure (réseau backbone plus réseau d'accès WiFi) déployé sur la trajectoire du véhicule. Dans une première partie, nous proposons une méthode, appelée Spiderman Handover, pour réaliser le handover horizontal d'un réseau en mouvement (embarqué dans le véhicule) et une procédure de mise à jour des informations de routage (couche 2 OSI) lors du handover. Nous évaluons notre proposition par simulation et validons nos résultats par des mesures expérimentales. Dans une deuxième partie, nous étudions théoriquement les paramètres de plusieurs familles de topologies du type Chordal pour le réseau backbone construit sur un réseau d'accès linéaire. A partir de la comparaison de ces paramètres, nous proposons une topologie backbone issue de la combinaison de deux topologies Chordal. Cette topologie fournit un bon compromis entre coût du déploiement, nombre de sauts nécessaires pour atteindre la passerelle du réseau et résilience raisonnable. Enfin, nous évaluons l'intégration de la topologie proposée pour le réseau d'infrastructure avec le système handover par des simulations. Les résultats présentés suggèrent que l'algorithme de handover proposé fonctionne correctement sur le réseau d'infrastructure proposé. Cela permet la garantie d'une connexion continue aux passagers à bord des trains, métros ou autobus urbains.

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Stevens, Irena. "Policy implications of municipal investment in Georgia's wireline broadband networks." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49081.

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The Community Broadband Investment Act, introduced in the Georgia legislature in 2012 and 2013 is a reflection of a broader national debate over the role of government investment in broadband infrastructure. The bill would limit local governments' ability to invest in broadband infrastructure for their communities because of arguments that government entry into the telecommunications sector crowds-out private competition, does not serve the public adequately, and lacks a comprehensive business model or best practices. A closer look at the history of utility regulation and various economic perspectives on the proper government role in utility provision reveals that government has had an extensive historical role in utility infrastructure investment and regulation, and several economic doctrines support the conclusion that government can be helpful in facilitating effective broadband service to their communities. Case studies of different models of municipal broadband networks in Georgia reveal that government entry can facilitate private sector competition, often provides quality service, and has a set of best practices. The success of municipal broadband reveals an evolution in the approach to telecommunications regulation from a regulated monopoly approach to a public-private cooperation approach which considers public participation with private entities on a dynamic scale. Government-entry into the broadband market was a rational decision for several Georgia communities due to their unique set of circumstances, and while municipal broadband may not be the answer to many communities' problems with meeting public demand, communities should be allowed to maintain flexibility in their decision-making about how to best serve their residents, effectively allowing them to decide which combination of public and private advantages they can leverage to meet the demand of their communities in relation to their unique local characteristics.

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Lee, Sangjin. "The impact of alternative regulation on telecommunications infrastructure deployment : the case of price cap regulation." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1272391577.

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Ceita, Yannick Soares de Barros de. "Shared solution for telecommunications networks." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23613.

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Mestrado em Engenharia Eletrónica e de Telecomunicações
Despite the substantial increase in the percentage of the globe surface covered by mobile communications, there are issues that have hampered the implementation and development of cellular networks in regions where the market and economic power are still under development. Many of these issues are of economic and financial nature. It is curiously a contradictory fact, since mobile communications on several occasions proved to be a great ally for the growth and economic development of this type of regions. Therefore, in situations such as these, where the development or installation of cellular networks is blocked or conditioned by economic and financial factors, the adoption of infrastructure or service sharing methods can facilitate the implementation and expansion of cellular networks in these regions. The work developed in this dissertation seeks to identify and study the most common methods of cellular network sharing. Through the use of a numerical tool, the effects and techno-economic benefits that each sharing method will bring to the operators interested in entering markets with these characteristics will be analyzed.
Apesar do crescente aumento da superfície terrestre coberta pelas comunicações móveis, há questões que têm dificultado à implementação e desenvolvimento das redes celulares nas regiões onde o mercado e o poder económico ainda estão em desenvolvimento. Muitas dessas questões são de carácter económico e financeiro. O que se torna, curiosamente, um facto contraditório, uma vez que as comunicações móveis em diversas ocasiões provaram ser um grande aliado para o crescimento e desenvolvimento económico deste tipo de regiões. Portanto para situações como estas, onde o desenvolvimento ou instalação de redes celulares é travado ou condicionado por factores de carácter económico e financeiro, a adopção de métodos de partilha de infraestruturas ou serviços consegue facilitar a implementação e expansão de redes celulares nestas regiões. O trabalho desenvolvido nesta dissertação procura identificar e estudar os métodos mais comum de partilha. Através do uso de uma ferramenta de cálculo, analisam-se também os efeitos e benefícios económicos que cada método de partilha trará para os operadores interessados em entrar em mercados com características aqui consideradas.

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Schnurr, Daniel [Verfasser], and J. [Akademischer Betreuer] Krämer. "Open Access to Telecommunications Infrastructure and Digital Services: Competition, Cooperation and Regulation / Daniel Schnurr ; Betreuer: J. Krämer." Karlsruhe : KIT-Bibliothek, 2016. http://d-nb.info/1119242940/34.

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van, Gelder Brenda A. "Exploring the Feasibility of a Strategic Alliance Approach to Telecommunications Provision in Rural Municipalities." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/42347.

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Rural communities require means for obtaining access to affordable broadband infrastructure and services to meet their economic development, education, and quality of life objectives. Due to the comparatively low potential for return on investment in serving isolated rural communities, the private sector telecommunications providers have proved unwilling or unable to provide beyond the very basic services for rural communities. Private sector providers must maximize their return on investment as it is their responsibility to shareholders. Return on investment is maximized in urban areas as opposed to rural areas because the high capital cost per connection is higher in rural areas; the operating cost per connection is higher; and the revenues per connection tend to be lower. This thesis explores the feasibility of municipal and private sector provider strategic alliances as an approach to provisioning rural areas with improved telecommunications infrastructure and services. As a means of determining whether the possibility exists of a â meeting of the mindsâ between municipalities and private sector telecommunications providers, a series of interviews was conducted. Common themes from the interviews were analyzed for areas of mutual interest and of polarized perspectives. In pursuing an alliance model, communities may need to consider less than the optimal technological solution in exchange for the opportunity to exemplify the ability to collaborate with a willing private sector partner. The results suggest that, while the prospects for strategic alliances as an emerging business model appear dim, opportunities do exist for rural communities and small private sector companies to find mutual interest on an exceptional basis in developing strategies for access to telecommunications infrastructure and services.
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Abou, El Kalam Anas. "Sécurité des réseaux et infrastructures critiques." Habilitation à diriger des recherches, Institut National Polytechnique de Toulouse - INPT, 2009. http://tel.archives-ouvertes.fr/tel-00440784.

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Les infrastructures et réseaux critiques commencent à s'ouvrir vers des architectures, protocoles et applications vulnérables. Ainsi, non seulement il est question de sécuriser ces applications (e.g., contre les attaques potentielles), mais il faut également justifier notre confiance dans les mécanismes de sécurité déployés. Pour cela, nous présentons PolyOrBAC, un cadriciel basé sur le modèle de contrôle d'accès OrBAC, les mécanismes de services Web ainsi que les contrats électroniques. Ensuite, nous préconisons l'utilisation de la Programmation Logique par Contraintes (PLC) pour détecter et résoudre les conflits éventuels dans la politique de sécurité. Au niveau de la mise en œuvre, nous proposons le protocole Q-ESP, notre amélioration d'IPSec qui assure à la fois des besoins de sécurité et de QoS. Enfin, nous présentons nos modèles et résultats de test et d'évaluation d'outils de sécurité notamment les Systèmes de Détection d'Intrusions (IDS).

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Hassan, Hosseini Hourieh. "Vehicle-to-Infrastructure connected smart cameras for intersection monitoring: concept study." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Infrastructure can obtain and share information about crashes, traffic jams, sharp curves and recommended speed. We can also dynamically change recommended speed based on weather or hazardous conditions. When mentioning something that is smart, by any means, it should have some specific features different from the ordinary monitoring. To take advantage of the full benefit of connected and automated vehicles, we need the infrastructure to be outfitted and that eventually confirms there is no smart city without smart camera. The whole concept of this thesis exercise is about connection between the smart camera that is in infrastructure and the vehicles on the road. This thesis exercise was developed in FEV Italia s.r.l company which is internationally recognized and a leader in vehicle systems. The exercise has been performed in Green Research Mobility Laboratory. We worked on the concept study to make connection between smart camera for the purpose of intersection monitoring and our vehicle to receive warning messages to prevent collision. We worked with two different V2X standards to send warning messages to the vehicles. Final section of this thesis exercise is developed with MATLAB interface to detect the time that these two vehicles will collide and the time that the camera will detect the second vehicle and subsequently sends the warning message to the first vehicle. Then we calculated the maximum latency to find out which standard fits best in our purpose with lesser delay. The proven and result in this thesis will be implemented by FEV company.

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Braun, Nils. "Competition in Telecommunications with Two Network Infrastructures Analysis of the efficiency of doubled infrastructures and of effects having differing cost structures - with special regard to the Swiss case /." St. Gallen, 2005. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/01648971001/$FILE/01648971001.pdf.

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Davoli, Gianluca. "Intent-based approach to virtualized infrastructure management in SDN/NFV deployments." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13106/.

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Telecommunication networks are meant to be efficient, transparent, and accessible to the broadest possible set of users. However, they are very complex systems, in which a large number of components cooperates, posing a challenge to the desired efficiency, transparency and ease of access. Emerging technological paradigms such as Software Defined Networking (SDN), Network Function Virtualization (NFV) and Cloud Computing open up to a whole new set of possible applications for the infrastructure, or better ways to implement traditional services, but also introduce new environments to be controlled. One of the main challenges in delivering end-to-end service chains across multiple SDN, NFV and Cloud domains is to achieve unified management and orchestration functions. A very critical aspect is the definition of an open, vendor-agnostic, and interoperable northbound interface (NBI) that should be as abstracted as possible from domain-specific data and control plane technologies, making the underlying infrastructure easier to be accessed, while still allowing a fair amount of flexibility and freedom in programmability of the network. In this document we describe a reference architecture and expand an intent-based NBI for end-to-end service orchestration across multiple technological domains. More specifically, we consider the use case of an Internet of Things (IoT) infrastructure deployment and the corresponding Cloud-based data collection, processing, and publishing services, differentiating multiple Quality of Service (QoS) classes. Finally we report the experimental validation of the proposed architecture over a heterogeneous, multi-domain SDN test bed.

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Davoli, Lorenzo. "Transtructures : prototyping transitional practices for the design of postindustrial infrastructures." Doctoral thesis, Umeå universitet, Designhögskolan vid Umeå universitet, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-118066.

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This dissertation is about 'transtructures', a term coined to describe new kinds of infrastructures that are more attentive and responsive to the needs of contemporary society, its emerging economies and technological capabilities. The purpose of this inquiry is to begin to explore the character and possibilities of a design practice that could guide responsibly and ethically the transition of existing industrial infrastructures towards these new configurations: what processes it could follow, and what materials it could include. Through a series of design experiments in the areas of logistics and telecommunications, I started to prototype and develop a programmatic framework for a 'redirective' design practice, which is aimed at engaging publics with infrastructural issues. Design probes and speculative mockups have been employed to express and materialize present and future infrastructural configurations, opening them up to public scrutiny and participation. The premise of this work is fairly simple: if we want to provide more citizen-centered solutions to emerging social demands, we need to explore what changes are possible, and even required, within the industrial systems that currently frame our possibilities for implementing such innovations. Thus, certain design interventions will be necessary to allow people outside these systems to understand and relate to these networks and to identify possibilities for their transformation. The result of this inquiry is the early 'prototype' of what a practice for redirecting and transitioning towards the design of such postindustrial infrastructures could be like. In particular, it exemplifies how design may inquire into the artificial space of industrial infrastructures and explore opportunities for their reconfiguration toward more contextually adaptive forms and functions.

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Collins, Michael Andrew. "The potential of user and stakeholder participation in the design and configuration of telecommunications infrastructure in rural Jamaica : a preliminary investigation." Thesis, University of Warwick, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342547.

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Myadam, Nishkal Gupta, and Bhavith Patnam. "Design and Implementation of Key Exchange Mechanisms for Software Artifacts using Ocean Protocol." Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20665.

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During the modern times, innovators and researchers developed a key technology known as Artificial Intelligence (AI) Marketplace which leverages the power of AI to efficiently utilize the data generated by millions of devices to create new and better services and software products. H2020 Bonseyes is one such project that provides us a collaborative cloud based model of the AI marketplace for the users who generally don’t have access to large data sets, algorithms etc by allowing them to collaborate which each other and exchange the software artifacts. Collaboration leads to issues related to authentication and authorization which are addressed by Public Key In- frastructure(PKI).The main component of the PKI is the Certificate Authority which acts a anchor of trust, whose architecture is designed to be centralized. Centralized architecture is prone to many attacks and also failures which makes it vulnerable and weak.The adverse effects of the CA based PKI can be avoided by implementing a distributed PKI.This thesis focuses on a hybrid methodology consisting of Qualitative and Quanti- tative analysis by performing a literature review for accumulating knowledge from the Ocean Protocol which is a decentralized AI marketplace.The thesis aims to design and implement the framework used in the ocean protocol and evaluate its performance.The thesis also aims to develop a reference framework to be compatible with the Bonseyes Project. Moreover, our research also provides the reader with the concepts and technologies used in other implementations of distributed PKI.

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Dissertations / Theses on the topic 'Telecommunication infrastructure'

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