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Dissertations / Theses on the topic 'Information and telecommunication system'

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Published: 30 May 2022

Last updated: 31 July 2025

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1

Ko, Leonard L. "Personal information system /." Online version of thesis, 1993. http://hdl.handle.net/1850/11976.

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2

O'Such, William R. "Information theoretic analysis of multi-stage communication/imaging systems /." Online version of thesis, 1988. http://hdl.handle.net/1850/10568.

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3

Москаленко, В`ячеслав Васильович, Вячеслав Васильевич Москаленко, and Viacheslav Vasylovych Moskalenko. "Information-extreme technology for load estimation of telecommunication GRID-system nodes." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/33532.

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GRID-system is considered as poorly formalized control object that is functioning in conditions of uncertainty and unguided random factors. Due to inefficiency of traditional methods of parametric control, the usage of a learning control system by functional state is promising approach. The report considers increase functional effectiveness of management by GRID-system within information-extreme intelligent technology (IEI-technology) of analysis and synthesis of learning systems, that is based on machine learning and pattern recognition. When you are citing the document, use the following lin

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4

Liu, Kung-Chao. "Information system development and the use of electronic meeting systems." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185439.

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Information system requirements determination is a key area in management information systems research that includes the problems of requirements specification, requirements elicitation, and user involvement. The combination of these three problems is a research area which we call the group approach to information system requirements determination. The main contribution of this research is a model to be used for the problem of fitting existing computer aids to this research area and a set of methods for solving the usability and configuration problems when using such computer aids. The usabili

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5

Dreis, Yurii, Mariia Roshchuk, and Olga Romanenko. "Sectors of critical information infrastructure." Thesis, Європейський університет, Київ, 2018, 2018. http://er.nau.edu.ua/handle/NAU/32649.

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the analysis of absence a list of critical infrastructure sectors is analyzed, taking into account experience the developed countries of the world. The main sectors of critical infrastructure are presented and in view of the fact that in most objects of critical infrastructure there is an information and telecommunication system that is vulnerable to various types of cyberattacks, a list of these sectors is proposed.

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6

Sangvanphant, Nattanond. "Performance Evaluation Framework for a SIP-based Telecommunication Call Handling System." Thesis, Norwegian University of Science and Technology, Department of Telematics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9032.

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<p>Session Initiation Protocol (SIP) has been used for signaling in many Voice over IP (VoIP) applications. Being more cost-effective than conventional circuit-switched systems, IP-based telecommunication systems are extensively employed by many service providers. As these systems gain more popularity, the need for dimensioning of such systems grows correspondingly. Moreover, accurate information about system capacity is necessary for future improvements of the system, as well as service provision and implementation planning. For these reasons, a solution supporting system performance evaluati

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7

Dunphy, Gerard Michael. "Requirements analysis of a multimedia patient information system in telemedicine applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0029/MQ47447.pdf.

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8

Lundgren, Andreas. "Implementing Service Model Visualizations : Utilizing Hyperbolic Tree Structures for Visualizing Service Models in Telecommunication Networks." Thesis, Umeå University, Department of Informatics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-24618.

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<p>This paper describes the design, implementation and evaluation of HyperSALmon, a Java™ open source prototype for visualizing service models in telecommunication networks. For efﬁcient browsing and graphical monitoring of service models using SALmon, a service modeling language and a monitoring engine (Leijon et al., 2008), some kind of interactive GUI that implements a visualization of the service model is desired. This is what HyperSALmon is intended to do. The prototype has been designed in accordance with suggestions derived from a current research report of visualization techniques (Seh

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9

Roman, Acevedo Annie Luz. "Strategies to Control Internal Factors Affecting Information Systems Projects in Puerto Rico." ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/3119.

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Many project managers and business leaders lack effective strategies to control internal factors that affect information systems (IS) projects, which may impede leadership's ability to respond to market changes. The purpose of this multiple case study was to explore strategies used by 6 purposefully selected project managers who successfully implemented information system development (ISD) projects by controlling the internal factors that affected different ISD project phases in Puerto Rico's telecommunication service industry. The framework that guided this study was coordination theory. The

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10

Hong, Jun, and 洪珺. "Impact of information on wireless network performance." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46585989.

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11

Perednikas, Erdvinas. "Telekomunikacijų tinklo informacijos sistema." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060110_110232-62275.

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In a dynamic, high-growth, highly competitive service environment, a service provider's ability to meet increasing demands for efficiency of network resource allocation, productivity and reliability when provisioning services for customers depends on having up-to-date network inventory information available. An accurate resource inventory management system allows a service provider to improve the control and understanding of its communications infrastructure, expedite the management of customer orders and automate the provisioning of services. The basic goal and final result of presented work

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12

Bródka, Piotr. "Key User Extraction Based on Telecommunication Data." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5863.

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The number of systems that collect vast amount of data about users rapidly grow during last few years. Many of these systems contain data not only about people characteristics but also about their relationships with other system users. From this kind of data it is possible to extract a social network that reflects the connections between system’s users. Moreover, the analysis of such social network enables to investigate different characteristics of its users and their linkages. One of the types of examining such network is key users extraction. Key users are these who have the biggest impact

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13

Huhta, Filip, and Alexander Lesser. "Reaktiva system : En lösning för Wangiri bedrägerier." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79196.

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The purpose of the study is to identify problems with existing fraud prevention systems that deals with Wangiri fraud. We also intend to identify how it is possible to reduce the detection time of Wangiri fraud using reactive systems. The aim of the study is to find out if reactive solutions can be used in the development of fraud prevention systems. The conclusion reached in the study is that reactive systems can be used to detect Wangiri fraud faster for telecom companies that have a similar process for handling call data.<br>Syftet med undersökningen är att identifiera problem med existera

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14

Velagapudi, Alekhya. "Time Series Event Analysis of Pooled Multiyear Telecommunication Outages." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1470824497.

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15

Yoon, Janghyun. "A network-aware semantics-sensitive image retrieval system." Diss., Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180459/unrestricted/yoon%5fjanghyun%5f200312%5fphd.pdf.

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16

Barannik, Vlad, Y. Babenko, S. Shulgin, and M. Parkhomenko. "Video encoding to increase video availability in telecommunication systems." Thesis, Taras Shevchenko National University of Kyiv, 2020. https://openarchive.nure.ua/handle/document/16582.

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Article shows presence of the imbalance caused by insufficient level of productivity of modern and perspective information communication technologies concerning information intensity of bit streams. It is described how imbalance level reducing can be formed as a result of increasing of information processing technologies efficiency and that JPEG platform is the basic concept for construction of technologies of compression representation. Therefore it is proposed to provide further development of video processing methods using individual components of the JPEG platform for improving the integri

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17

O, Siu-lan Isis. "Building an effective decision support system : a study for a local retailer of telecommunication products /." [Hong Kong : University of Hong Kong], 1990. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12792767.

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18

Zhao, Tianxiao. "Enhanced Experience Generation for Reinforcement Learning Pre-training in Telecommunication Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-283763.

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In recent years, the rise of Reinforcement Learning (RL) in robotics and games has attracted growing attention from different industries, such as telecommunications. One novel attempt to apply reinforcement learning within telecommunications is to train an RL agent for auto-scaling Virtualized Network Functions (VNFs) in a core network environment. Such an attempt could bring increased flexibility and intelligence into workload handling and resource allocation, but it majorly suffers from an unacceptably long training period. Traditionally, this issue can be mitigated by pre-training the agent

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19

Ivkovic, Milos. "Characterization and Coding Techniques for Long-Haul Optical Telecommunication Systems." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/196150.

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This dissertation is a study of error in long haul optical fiber systems and how to coupe with them. First we characterize error events occurring during transmission, then we determine lower bounds on information capacity (achievable information rates) and at the end we propose coding schemes for these systems.Existing approaches for obtaining probability density functions (PDFs) for pulse energy in long-haul optical fiber transmission systems rely on numerical simulations or analytical approximations. Numerical simulations make far tails of the PDFs difficult to obtain, while existing ana

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20

Komisarczuk, Peter. "The performance of the telecommunication information networking architecture applied to internet protocol service provision." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/2247/.

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21

Milisavljevic, Mile. "Information driven optimization methods in control systems, signal processing, telecommunications and stochastic finance." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/14912.

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22

Tavakoli, Samira. "Motivations for and Problems in the Continued Use of Organizational E-learning System : A Case of Telecommunication Company in Iran." Thesis, Linnéuniversitetet, Institutionen för informatik (IK), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-56559.

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E-learning in organizations is gaining more attention as it can be a step forward in the competitive market. Businesses are more in need of skilful employees and at the same time employee turnover can have costs. Although the organizations are offering elearning systems, these systems are not being used as much as they should be. This research concerns continued use of e-learning system in the organizations. The purpose of the study is to understand the motivations for and problems in the continued use oforganizational e-learning. The case under study is a Telecommunication Company in Iran whi

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23

Кулик, Ігор Анатолійович, Игорь Анатольевич Кулик, Ihor Anatoliiovych Kulyk та Ю. В. Савченко. "АВ-сжатие двоичной информации для телекоммуникационных систем". Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/67887.

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Большие объемы информации, передаваемой по современным телекоммуникационным системам, требуют все более широкого применения методов и средств сжатия данных. Информационное сжатие позволяет, с одной стороны, увеличить скорость передачи без увеличения полосы пропускания канала связи, а, с другой, уменьшить объем запоминающих устройств для хранения данных в телекоммуникационным системах. Анализ данных в телекоммуникациях показывает, что они характеризуются разнообразием видов и представлений, к тому же в них широко представлены изображения, отличающиеся значительной информационной избыточностью.

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24

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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25

Taşkın, Özlem Özcan A. Can. "Information and communication technologies for public use and interactive-multimedia city kiosks/." [s.l.]: [s.n.], 2004. http://library.iyte.edu.tr/tezler/master/endustriurunleritasarimi/T000487.rar.

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Thesis (Master)--İzmir Institute of Technology,İzmir, 2004<br>Keywords: Information and communication technologies (ICT), interactivity, city kiosk, public use. Includes bibliographical references (leaves. 103).

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26

Shyirambere, Aimee S. "A Reliability and Survivability Analysis of US Local Telecommunication Switches that Experience Frequent Outages." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1365724373.

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27

Nazar, Arbab. "Evaluation of VoIP Codecs over 802.11 Wireless Networks : A Measurement Study." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-3650.

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<p>Voice over Internet Protocol (VoIP) has become very popular in recent days andbecome the first choice of small to medium companies for voice and data integration inorder to cut down the cost and use the IT resources in much more efficient way. Anotherpopular technology that is ruling the world after the year 2000 is 802.11 wirelessnetworks. The Organization wants to implement the VoIP on the wireless network. Thewireless medium has different nature and requirement than the 802.3 (Ethernet) andspecial consideration take into account while implementing the VoIP over wirelessnetwork.One of the

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28

Adi, Ana. "Believe it or not youth and young adult female perceptions of the credibility of online multimedia messages /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4954.

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Thesis (M.A.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on October 23, 2007) Includes bibliographical references.

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29

Lee, Jaejin. "Robust multitrack modulation codes for the storage channel." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/15034.

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30

McGovern, Susan C. "Information security requirements for a coalition wide area network." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA397542.

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Thesis (M.S. in Systems Technology (Command, Control, and Communications)) Naval Postgraduate School, June 2001.<br>Thesis advisor(s): Irvine, Cynthia E. "June 2001." Includes bibliographical references (p. 77-78). Also available online.

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31

Erlandsson, Henrik, and Viktor Sköldheden. "Methods of self-interference cancellation in full duplex telecommunication systems." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-448066.

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With the wireless technology evolving quickly, so does the demand of speed and efficiency. This makes the companies look for new and better ways to improve the current systems. One way of improving the present systems would be to employ Full Duplex Technology. In recent years the standard has been Half duplex technology with either Time Division Duplexing (TDD) or Frequency Division Duplexing (FDD). The drawback of TDD is that the signals is put in different time slots, meaning if many signals is to be transmitted at the same time there will be a delay. For FDD the signals are sent at differen

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32

Suradi, Zurinah. "The influence of national culture on the acceptance of computer based information systems : Malaysian telecommunication perspective." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248451.

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33

Huang, Jinliang. "Adaptive MIMO Systems with Channel State Information at Transmitter." Doctoral thesis, KTH, Kommunikationssystem, CoS, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9777.

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This dissertation presents adaptation techniques that can achieve high spectral efficiency for single user multiple-input multiple-output (MIMO) systems. Two types of adaptation techniques, adaptive modulation and adaptive powe allocation, are employed to adapt the rate and the transmit power to fading channels. We start by investigating the adaptive modulation subject to a certain bit-error-ratio (BER) constraint, either instantaneous BER constraint or average BER constraint. The resulting average spectral efficiencies are obtained in closed-form expressions. It turns out that, by employing t

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34

Wu, Leilei. "MIMO broadcast channels with limited feedback." Thesis, The University of Sydney, 2009. https://hdl.handle.net/2123/28231.

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With the integration of internet and multimedia applications in next generation wireless com— munications, the demand for high speed communication techniques is growing. As the radio spectrum is limited, high speed data transmission can only be achieved by adopting more efficient systems. Multiple—input multiple—output (MIMO) technologies have been proven to be capable of achieving a better system gain and have the advantage of improving system throughput and error performance by exploiting the spatial diversity, due to the multiple independent transmit—receive paths. A simple techniq

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35

Deputy, Carl William. "Design of telecommunication network for geographic information systems for the Appalachian Council of Governments : a case study /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA273192.

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36

Ribes, David. "Universal informatics building cyberinfrastructure, interoperating the geosciences /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3237063.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed December 7, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 447-467).

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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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38

Shanikat, Mohammed. "Organisational change and accounting information systems a case study of the privatisation of Jordan Telecom /." Access electronically, 2008. http://ro.uow.edu.au/theses/103.

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39

Liginlal, Divakaran. "Building fuzzy front-end decision support systems for new product information in global telecommunication markets: A measure theoretical approach." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/284835.

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In today's highly competitive business environment, innovation and new product introduction are recognized as the sustaining forces of corporate success. The early phases of new product development, collectively known as the 'front-end', are crucial to the success of new products. Building a fuzzy front-end decision support system, balancing the needs for analytical soundness and model robustness while incorporating decision-maker's subjectivity and adaptability to different business situations, is a challenging task. A process model and a structural model focusing on the different forms of un

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40

Zhang, Xi. "Transceiver Design for Multiple Antenna Communication Systems with Imperfect Channel State Information." Doctoral thesis, Stockholm : Elektrotekniska system, Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4679.

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41

Britton, Matthew Scott. "Stochastic task scheduling in time-critical information delivery systems." Title page, contents and abstract only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phb8629.pdf.

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"January 2003" Includes bibliographical references (leaves 120-129) Presents performance analyses of dynamic, stochastic task scheduling policies for a real- time-communications system where tasks lose value as they are delayed in the system.

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Agarwala, Sandip. "System Support for End-to-End Performance Management." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16171.

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This dissertation introduces, implements, and evaluates the novel concept of "Service Paths", which are system-level abstractions that capture and describe the dynamic dependencies between the different components of a distributed enterprise application. Service paths are dynamic because they capture the natural interactions between application services dynamically composed to offer some desired end user functionality. Service paths are distributed because such sets of services run on networked machines in distributed enterprise data centers. Service paths cross multiple levels of abstracti

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Coetzee, Coenraad J. W. "ICT convergence : impact on Namibian ICT operators." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/19806.

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Thesis (MBA) -- Stellenbosch University, 2007.<br>Today we face a reality where existing power relations concerning economical, political and cultural institutions and forces are changing. It is about more than just the right to use a technology in itself; it is a matter of having, or not having, access to infonnation and knowledge. The use of information and communications technology (lCT) is an important and powerful tool when it comes to distributing and sharing these resources (Bridges.arg, 2006). The unequal distribution of and the differences in the possibility to use rer effectivel

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Salmon, Brian P. "Optimizing LDPC codes for a mobile WiMAX system with a saturated transmission amplifier." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-01262009-160431/.

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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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Кулик, Ігор Анатолійович, Игорь Анатольевич Кулик, Ihor Anatoliiovych Kulyk та А. Г. Гайворонская. "Биномиальное сжатие информации для телекоммуникационных систем". Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/67831.

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В структуре современных телекоммуникационных систем все большее распространение получают блоки и узлы, предназначенные для сжатия передаваемой информации. Использование методов сжатия является одним из эффективных и простых способов повышения скорости передачи данных, а значит, в целом, и производительности системы связи. Следует отметить, что такое повышение, как правило, не связано с необходимостью внесения дорогостоящих изменений в структуру телекоммуникационной системы и самой каналообразующей аппаратуры.

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Kim, Moo Yound. "Source and Channel Coding for Audiovisual Communication Systems." Doctoral thesis, KTH, Signals, Sensors and Systems, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-57.

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<p>Topics in source and channel coding for audiovisual communication systems are studied. The goal of source coding is to represent a source with the lowest possible rate to achieve a particular distortion, or with the lowest possible distortion at a given rate. Channel coding adds redundancy to quantized source information to recover channel errors. This thesis consists of four topics.</p><p>Firstly, based on high-rate theory, we propose Karhunen-Loéve transform (KLT)-based classified vector quantization (VQ) to efficiently utilize optimal VQ advantages over scalar quantization (SQ). Compared

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Kim, Moo Young. "Source and Channel Coding for Audiovisual Communication Systems." Doctoral thesis, KTH, Signaler, sensorer och system, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-57.

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Topics in source and channel coding for audiovisual communication systems are studied. The goal of source coding is to represent a source with the lowest possible rate to achieve a particular distortion, or with the lowest possible distortion at a given rate. Channel coding adds redundancy to quantized source information to recover channel errors. This thesis consists of four topics. Firstly, based on high-rate theory, we propose Karhunen-Loéve transform (KLT)-based classified vector quantization (VQ) to efficiently utilize optimal VQ advantages over scalar quantization (SQ). Compared with cod

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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

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Come, Gilberto de. "Contribuição ao estudo da implementação de Data Warehousing: um caso no setor de telecomunicações." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/12/12139/tde-19042002-183028/.

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O desenvolvimento da tecnologia de informação, aliado à globalização e ao aumento da competitividade nos mais variados setores, está facilitando a integração entre o mercado produtor e consumidor. A cada negócio realizado, ou seja, a todo momento, uma grande quantidade de dados é gerada e armazenada, passando a ser um recurso importante da empresa. O grande problema está em como tratar esse grande volume de dados, geralmente espalhados por diversos sistemas de informação, de forma a obter alguma vantagem competitiva através da informação certa no momento certo. O Data Warehouse surgiu nos

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