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Bowman, W. Stevenson. "Communication module for the micro-based small purchase contracting program." Thesis, Monterey, Calif. : Naval Postgraduate School, 1992. http://handle.dtic.mil/100.2/ADA250092.
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Thesis (M.S. in Information Systems)--Naval Postgraduate School, March 1992.<br>Thesis Advisors: Matsushima, Rodney ; Sengupta, Kishore. "March, 1992." Description based on title screen as viewed on March 4, 2009. Includes bibliographical references (p. 270-271). Also available in print.
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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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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 data collection process included semistructured interviews and project documentation including business requirements, project charters, project plans, and lessons learned which also served as resources for member checking and validation to strengthen the trustworthiness of the study. Analysis of the data occurred following Yin's 5 analytical steps of validating, coding, interpreting, summarizing, and generating themes. The 5 themes that emerged were top management support, clear requirements, communication, project plan, and lessons learned. Each theme corresponded to a phase of the project life cycle. Top management support and clear requirements were the top critical factors (TCF) in the initiating and planning phases. Communication and project plan were the TCF in the executing, monitoring, and controlling phases. Lessons learned were the TCF in the closing phase of the project. Implications for social change include helping IS project managers successfully implement IS projects, providing innovative services to customers, and improving an organization's position so it can provide jobs and economic stability in the region in which it operates.
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Tessier, Sean Michael. "Ontology-based approach to enable feature interoperability between CAD systems." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41118.
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Data interoperability between computer-aided design (CAD) systems remains a major obstacle in the information integration and exchange in a collaborative engineering environment. The standards for CAD data exchange have remained largely restricted to geometric representations, causing the design intent portrayed through construction history, features, parameters, and constraints to be discarded in the exchange process. In this thesis, an ontology-based framework is proposed to allow for the full exchange of semantic feature data. A hybrid ontology approach is proposed, where a shared base ontology is used to convey the concepts that are common amongst different CAD systems, while local ontologies are used to represent the feature libraries of individual CAD systems as combinations of these shared concepts. A three-branch CAD feature model is constructed to reduce ambiguity in the construction of local ontology feature data. Boundary representation (B-Rep) data corresponding to the output of the feature operation is incorporated into the feature data to enhance data exchange.
The Ontology Web Language (OWL) is used to construct a shared base ontology and a small feature library, which allows the use of existing ontology reasoning tools to infer new relationships and information between heterogeneous data. A combination of OWL and SWRL (Semantic Web Rule Language) rules are developed to allow a feature from an arbitrary source system expressed via the shared base ontology to be automatically classified and translated into the target system. These rules relate input parameters and reference types to expected B-Rep objects, allowing classification even when feature definitions vary or when little is known about the source system. In cases when the source system is well known, this approach also permits direct translation rules to be implemented. With such a flexible framework, a neutral feature exchange format could be developed.
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Gonzalez, Prieto Alberto. "Adaptive management for networked systems." Licentiate thesis, Stockholm : School of electrical engineering, KTH, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4022.
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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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Gürbüz, Özgür. "Power control based QoS provisioning for wireless multimedia networks." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/14888.
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Poellabauer, Christian. "Q-Fabric: System Support for Continuous Online Quality Management." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-04082004-134256/unrestricted/poellabauer%5Fchristian%5F200405%5Fphd.pdf.
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Thesis (Ph. D.)--Computing, Georgia Institute of Technology, 2004.<br>Pande, Santosh, Committee Member ; Pu, Calton, Committee Member ; Schwan, Karsten, Committee Chair ; Franke, Hubertus, Committee Member ; Eisenhauer, Greg, Committee Member. Vita. Includes bibliographical references (leaves 158-169).
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Meempat, Gopalakrishnan. "Modeling and adaptive resource management in integrated communication networks." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184843.
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The focus of this dissertation is the development of resource management schemes for integrated networks, with the major contributions being: (i) the development of an optimal adaptive buffer management scheme for the packet-switched subsystem, (ii) the integration of a moveable-boundary hybrid switching scheme with the time assigned speech interpolation technique for implementing a congestion control mechanism for the packet-switched subsystem, and (iii) the development of an adaptive hierarchical scheme for implementing the access control and routing functions within the circuit-switched subsystem. The problem of buffer management at an integrated network node is formulated as a nonlinear programming problem with a convex objective function and an interative solution technique with fast convergence is proposed for a real-time implementation of the buffer management scheme in practical environments. In order to exercise an additional degree of control over the packet-blocking probability at each hybrid-switched link within the network, a new multiplexing scheme based on the integration of the moveable-boundary hybrid switching scheme and the time assigned speech interpolation technique is presented in this dissertation. The tradeoff between the corresponding decrease in the packet blocking probability and the increase in the circuit freezeout fraction is demonstrated by a detailed queueing analysis of the multiplexer. Specific algorithms are also presented in this dissertation for the solution of the access control and routing problems within the circuit-switched subsystem. In particular, an access control scheme is developed by solving an integer programming problem formulated using the policy of complete partitioning of the available bandwidth among the competing user classes. As an alternative to the completely partitioned approach, the problem of traffic routing is considered in a network that supports homogeneous traffic classes based on the policy of complete sharing. Finally, for the general case of networks with heterogeneous traffic classes, a hierarchical scheme is developed for the implementation of the access control and the routing functions at two functional levels, where the access control is implemented by the network supervisor who solves an appropriate linear integer programming problem periodically, and the routing function is handled by the individual nodes of the network on a distributed basis. (Abstract shortened with permission of author.)
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Munoz, Jugo Cynthia, and Benjamin Jiang. "Systems thinking applied to a telecommunication startup company : The nexiwave case." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/55208.
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Thesis (S.M. in Engineering and Management)--Massachusetts Institute of Technology, System Design and Management Program, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 82-83).<br>Telecommunication technology has had a profound impact on our daily lives. It has enabled organizations to be more competitive by reducing the need for physical proximity and fostering collaboration. In recent years especially, data networks have been especially prominent, with the obvious example being the Internet. Work that was once conducted by phone and fax is now increasingly being done by VolP, e-mail and IM. For years telecommunication companies had focused in making available communication between person-to-person as well as multi-person and mobile communication, but none had focused on the content of the voice communication. This thesis presents a functioning product to address the needs of such users by applying a systems thinking approach to visualize and manage complexity through the whole process from the product idea generation to the business model. A detailed assessment of the users' needs and description of the product's user-centric design is provided. User experience design principles and legal constraints were considered throughout the development process. We propose to add value and differentiate the product by providing users with options to manage the content of their calls. At the most basic level, we give free audio-to-text transcripts with built-in features that could users save time and be more productive. nexiwave was built using principles promulgated in the System Design and Management Program classes.<br>by Cynthia Munoz Jugo [and] Benjamin Jiang.<br>S.M.in Engineering and Management
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Mattozo, Te?filo Camara. "An?lise de desempenho de vendas em telecomunica??es utilizando t?cnicas de minera??o de dados." Universidade Federal do Rio Grande do Norte, 2007. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14880.
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Previous issue date: 2007-11-22<br>Nowadays, telecommunications is one of the most dynamic and strategic areas in the world. Organizations are always seeking to find new management practices within an ever increasing competitive environment where resources are getting scarce. In this scenario, data obtained from business and corporate processes have even greater importance, although this data is not yet adequately explored. Knowledge Discovery in Databases (KDD) appears then, as an option to allow the study of complex problems in different areas of management. This work proposes both a systematization of KDD activities using concepts from different methodologies, such as CRISP-DM, SEMMA and FAYYAD approaches and a study concerning the viability of multivariate regression analysis models to explain corporative telecommunications sales using performance indicators. Thus, statistical methods were outlined to analyze the effects of such indicators on the behavior of business productivity. According to business and standard statistical analysis, equations were defined and fit to their respective determination coefficients. Tests of hypotheses were also conducted on parameters with the purpose of validating the regression models. The results show that there is a relationship between these development indicators and the amount of sales<br>Telecomunica??es ? uma das mais din?micas e estrat?gicas ?reas no mundo atual. H? constante necessidade das organiza??es buscarem novas formas de gerenciamento, em um ambiente cada vez mais competitivo e com recursos cada vez menores. A exist?ncia de bases de dados nas empresas passou a ter maior import?ncia. Na grande maioria dos casos, dados n?o s?o ainda explorados adequadamente. T?cnicas de Descoberta de Conhecimento em Bases de Dados (DCBD) surgem como alternativas, permitindo o estudo de problemas complexos, sendo cada vez mais utilizadas nas diferentes ?reas de gest?o. O presente trabalho apresenta uma proposta para a sistematiza??o das atividades de DCBD a qual integra as metodologias CRISP-DM, SEMMA, FAYYAD, em um ambiente interativo, bem como um estudo de viabilidade do uso de an?lise de regress?o linear m?ltipla para explica??o de vendas, no setor corporativo de telecomunica??es, utilizando indicadores de desempenho. Foi delineado um m?todo estat?stico para analisar o efeito que os indicadores de
desempenho t?m sobre o comportamento da produtividade de venda. Mediante an?lises estat?sticas e comerciais criteriosas, as equa??es foram definidas, sendo ajustados os seus respectivos coeficientes de determina??o. Foram tamb?m realizados testes de hip?teses de seus par?metros, visando ? valida??o ou n?o dos modelos de regress?o e an?lise da qualidade de seus ajustamentos. Ficou evidenciada a exist?ncia de relacionamento entre as caracter?sticas desses indicadores de desempenho com o volume de vendas realizado
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Mochizuki, Yujiro 1973. "Management of telecommunication systems design and development : learning from disruptive innovations in 3G mobile systems." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17809.
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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2004.<br>Includes bibliographical references (leaves 109-112).<br>Disruptive innovations in network systems are forcing mobile carriers to manage difficult network software development. Within the limited development time, mobile carriers are required to develop large scale, high quality and robust network software, and accomplish smooth transition/upgrading. In the drastic transition of the network architecture, network carriers often fail to develop platform network software. Compared with KDDI, NTT DoCoMo (DoCoMo) has been coping with network migration problems. The critical difference in both mobile carriers is whether the platform-based approach was applied sufficiently in the network software development. DoCoMo's insufficient platform-based approach led to migration difficulties. On the other hand, the consistent platform-based approach allowed KDDI to enjoy successful migration. In order to identify the critical factors in network software development related to this problem, this thesis (1) explores the characteristics of network innovations and (2) analyzes the platform innovations in mobile network software. The ultimate goal of this thesis is to (3) suggest how incumbent mobile carriers can avoid the potential threats and develop the platform network software in future disruptive network innovations. In the future, management of telecommunication systems design and development will face more challenging and more complicated migration because the network concepts and architecture will be completely different from those in the existing 3G networks. The lessons learned from the case studies DoCoMo and KDDI suggest ideas that mobile carriers can utilize to address tough situations.<br>(cont.) The platform-based approach definitely will help the migration strategies of mobile carriers and reduce the potential threats in current and future network systems.<br>by Yujiro Mochizuki.<br>S.M.M.O.T.
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Guo, Xingang. "Predictable CPU bandwidth management framework for next-generation operating systems /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004274.
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Gutíerrez, Juan Pablo. "A model approach for effective emergency telecommunication architecture for Texas border cities /." View online, 2006. http://ecommons.txstate.edu/arp/114/.
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Barlow, Sherwin Riaan. "Using an intelligent self-service solution to support telecommunication service provisioning." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1013417.
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The increasing competition between telecommunication service providers (TSPs) and the large amounts of human resource costs incurred to provision telecommunication services to small, medium and micro enterprises (SMMEs), highlight the need for effective self-service provisioning methods to reduce costs. Existing service provisioning methods do not effectively support SMMEs in the service provisioning process. The current methods used are manual and Web-based. The manual service provisioning method is labour and time-intensive. TSPs are being forced to cut human resource costs as the profit margins for provisioning services are narrow due to competition. The current web-based systems do not allow SMMEs to effectively purchase services as they provide long textual lists to consult and limited information about services. The objective of this research was to develop an intelligent web-based self-service system to support SMMEs in telecommunication service provisioning, using a Design Science Research methodology. A constraint-based, knowledge-based recommender system was selected as the most appropriate intelligent system to support telecommunication service provisioning. A prototype called SelPro was developed as a solution to address the shortcomings of the current ineffective service provisioning methods available for SMMEs. SelPro incorporates an interactive wizard-style user interface with dynamic recommendations to support novice users as well as an expert interface which provides less user support. An expert review and a user study were conducted to determine if SelPro was usable, useful and effective. SelPro was perceived as being usable for SMMEs wishing to purchase telecommunication services. Expert participants were satisfied with the usability of SelPro and perceived it as being useful, easy to use and easy to learn. SelPro was considered effective because of the high task success ratings provided by the participants using the two interfaces. The research determined that intelligent web-based self-service provisioning can be used to effectively support SMMEs in telecommunication service provisioning. General design recommendations for similar systems were proposed and future work will involve using intelligent systems to support large enterprises in telecommunication service provisioning.
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Gregory, Angela Stuart. "The impact of telecomunication reform on universal access in South Africa." Thesis, Stellenbosch : Stellenbosch University, 2006. http://hdl.handle.net/10019.1/50660.
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Thesis (MBA)--Stellenbosch University, 2006.<br>From the 1990s onwards, significant developments have occurred in the international
telecommunications sector that have affected the South African telecommunications
industry and peoples' access to the telephony. Rapid developments in Information
and Communication Technologies together with the reorganisation of
telecommunications operators through commercialisation, privatisation and market
liberalisation have resulted in monopoly operators moving away from their public
service mandates. Globalisation and adherence to World Trade Organisation rules
are causing operators to rebalance their tariffs, long-distance rates are decreasing
while the cost of local calls is increasing. High-end users of telecommunication
services are benefiting while low-end, largely residential users are being priced off
the network. The end result is a negative effect on universal access to
telecommunications.
This study examines the extent of telecommunications reform within the South
African telecommunications industry as it affects the provision of telecommunication
services and the government's goal of achieving universal access in South Africa.
Quantitative research methods utilising secondary data were utilised to establish that
the state owned operator, Telkom, has transformed itself from a public service
operator to one that is fully commercialised and prepared for competition.
This study finds that despite the large roll-out programme in fixed-line
telecommunications, there has been only very limited uptake for rural and low-income
users. Although Telkom's exclusivity period initially caused an acceleration of the
growth in net new lines from Telkom's greater investment levels, this acceleration
only lasted until 2000/1 when Telkom started to enforce timely accounts payment
more strictly. This resulted in an actual decrease in the total number of active lines in
2001 and 2002, despite new lines being rolled out. Household figures suggest that
low-income households disconnected in large numbers.
Fixed line telephony access was given to people who could not afford telephones
and hence they were later disconnected. The end result was that fixed lines ended
up growing at a similar rate to what they were prior to the exclusivity period,
suggesting that the grand subsidisation of universal access was most likely a waste
of resources and only resulted in temporary ownership improvements.
A further problem now faced by government is the number of people who were
disconnected from Telkom and remain indebted to the company. These households
are prevented from getting a fixed-line phone until they repay their deb!. This has
potentially far-reaching effects on their lives through destroying their credit rating.
In contrast to fixed line telephones, the growth in cellular subscribers has grown
beyond all expectations. Almost all the gains in ownership have come from the
adoption of cellular by rural and low-income users. This study demonstrates that
cellular is the rational choice for most low-income consumers given the different tariff
structures and the average monthly spend on communication.
The study further suggests that future use of universal service funds should be more
technology neutral, this will enhance the role of cellular telecommunications in such
plans. Removing the burden off fixed line for universal service provision may enable
the acceleration of telecommunication liberalisation in South Africa.
Obvious benefits are better prices and products for business users. Fixed-line
technology remains the core technology for business users who require bandwidth
for data services and make considerably more calls than residential users, making
fixed-line the cheaper technology. Amongst the current biggest users are cellular
network operators. Improving prices on leasing and interconnection should lower
cellular call rates, making it even more attractive to low-income users.
Finally, the new Intemational Telecommunication Union definitions for universal
access and service now include cellular technology and move away from a fixed-line
focus. These definitions are very much in line with the results identified in this study.
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Ng, Chi-kwong, and 吳志光. "Location management and level switching schemes in multitier mobile communication systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B30168661.
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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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Serbest, Yetik. "Resource management of integrated services networks /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.
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Zhang, Jihui. "On the optimal formulation of resource management in wireless networks /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?COMP%202005%20ZHANG.
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Zhang, Tong. "Improving the performance of a traffic data management system." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175198741.
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Harrington, Brian. "A Netcentric Scientific Research Repository." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5611/.
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The Internet and networks in general have become essential tools for disseminating in-formation. Search engines have become the predominant means of finding information on the Web and all other data repositories, including local resources. Domain scientists regularly acquire and analyze images generated by equipment such as microscopes and cameras, resulting in complex image files that need to be managed in a convenient manner. This type of integrated environment has been recently termed a netcentric sci-entific research repository. I developed a number of data manipulation tools that allow researchers to manage their information more effectively in a netcentric environment. The specific contributions are: (1) A unique interface for management of data including files and relational databases. A wrapper for relational databases was developed so that the data can be indexed and searched using traditional search engines. This approach allows data in databases to be searched with the same interface as other data. Fur-thermore, this approach makes it easier for scientists to work with their data if they are not familiar with SQL. (2) A Web services based architecture for integrating analysis op-erations into a repository. This technique allows the system to leverage the large num-ber of existing tools by wrapping them with a Web service and registering the service with the repository. Metadata associated with Web services was enhanced to allow this feature to be included. In addition, an improved binary to text encoding scheme was de-veloped to reduce the size overhead for sending large scientific data files via XML mes-sages used in Web services. (3) Integrated image analysis operations with SQL. This technique allows for images to be stored and managed conveniently in a relational da-tabase. SQL supplemented with map algebra operations is used to select and perform operations on sets of images.
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Dumas, Menjivar Marlon. "TEMPOS : une plate-forme pour le développement d'applications temporelles au dessus de SGBD à objets." Phd thesis, Université Joseph Fourier (Grenoble), 2000. http://tel.archives-ouvertes.fr/tel-00006741.
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Les données temporelles sont présentes dans de nombreuses applications utilisant des Systèmes de Gestion de Bases de Données (SGBD). Aussi, la plupart de ces systèmes offrent des types correspondant aux concepts de date et de durée, grâce auxquels il est possible de modéliser des associations temporelles simples, comme par exemple la date de naissance ou l'âge d'une personne. Toutefois, à quelques nuances près, aucun de ces systèmes n'offre des abstractions dédiées à la modélisation d'associations temporelles plus complexes, telles que l'historique du salaire d'un employé, ou la séquence d'annotations attachées à une vidéo. Dès lors, ces associations doivent être codées au travers de constructeurs de type tels que ''liste'' et ''n-uplet'', et la sémantique de ce codage doit être intégrée dans la logique des programmes applicatifs, accroissant par là leur complexité. Pour combler ces lacunes, des extensions dites ''temporelles'' de modèles et de langages pour Bases de Données ont été proposées. Cette thèse analyse et unifie les contributions de ces travaux, dans le but de les intégrer dans une extension temporelle du standard pour SGBD à objets de l'ODMG. Le résultat est une plate-forme logicielle baptisée TEMPOS, fondée sur trois modèles de sophistication croissante : un modèle du temps, un modèle d'historiques et un modèle d'objets et de propriétés temporels. Ce dernier fournit des fonctionnalités facilitant la transformation de bases de données conformes à l'ODMG en des bases de données temporelles. à partir de ces trois modèles, des extensions des langages de spécification de schéma et d'interrogation de l'ODMG sont définies. Enfin, un outil de visualisation basé sur un nouveau paradigme de navigation interactive au travers d'objets temporels est développé. L'ensemble des propositions sont formalisées, implantées au dessus d'un SGBD commercial, et validées par des études de cas.
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Nehme, Rimma V. "Continuous query processing on spatio-temporal data streams." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-082305-154035/.
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Sullivan, P. Brian. "Action plan to implement satellite video communications at Air Products and Chemicals, Inc." Instructions for remote access. Click here to access this electronic resource. Access available to Kutztown University faculty, staff, and students only, 1989. http://www.kutztown.edu/library/services/remote_access.asp.
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Golany, Yanai S. "Enhancing service providers reliability by mitigating supply chain risk : the case of telecommunication networks." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90782.
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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2014. In conjunction with the Leaders for Global Operations Program at MIT.<br>Thesis: S.M., Massachusetts Institute of Technology, Engineering Systems Division, 2014. In conjunction with the Leaders for Global Operations Program at MIT.<br>Appendix printed landscape. Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 48-49).<br>Service providers rely on the continuity of their service to sustain their businesses. While at first glance it may seem that service providers are not as dependent on their supply chain as product companies are, a closer look of some relevant systems shows that a stable and resilient supply chain is a key for both maintaining service and growing it. A wireless network provider which does not have spare parts in place to maintain existing cell sites will see an increase in outage duration and, thereby, customer churn. A cable/satellite service provider which does not have the equipment at the right place and in time to expand to a new market will see competitors capturing customers. In order to eliminate or at least mitigate these types of business risks for service providers, a transformation of the Time to Recovery (TTR) / Time to Survive (TTS) framework is shown to fit the service domain. TTR represents the time it takes for a supply chain system to recover from a disrupted supplier. TTS represents the time a supply chain system can continue to operate while its sources of supply are disrupted. The key metric which is introduced is value of service, which allows us to measure the actual lost value as a result of service disruptions.<br>by Yanai S. Golany.<br>M.B.A.<br>S.M.
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Shih, Alexander (Alexander En-Tzu). "The contribution of mobile telecommunication technology to sustainable development in selected countries in Africa." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/70869.
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Thesis (S.M. in Engineering and Management, and, in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 143-150).<br>While most of the world's population resides in countries that are wealthy or developing, the rest reside in low-income and least developed countries (LDCs), left behind and growing more disconnected. At the same time, mobile phones are widely adopted in these underdeveloped areas and demonstrate potential for economic development. However, technological innovation and policies have often addressed narrow dimensions of poverty and development. Sustainable development, on the other hand, assesses the welfare of a country in its entirety. This then begs the question of how mobile telephony technology, given its pervasiveness, can be beneficial on a systemic and sustainable level. This document presents evidence that mobile phones can contribute to sustainable development in several ways. The focus is on selected countries in the sub-Saharan Africa region: Kenya, Tanzania, Uganda, and Nigeria, each of which is categorized as a LDC. The Sustainable Development framework is used to analyze data from case studies and existing technology, institutional and policy trends in the mobile telecommunication industry. The evidence from literature demonstrates that mobile initiatives focused on niche areas, such as banking and health, have benefited on the community level and improved operations within firms. Mobile industry policies have created a healthy system of innovation in these countries. However, environmental development has been secondary or even ignored. Thus, the recommendations focus on prioritizing sustainability, specific policies continuing diffusion and adoption, technology transfer mechanisms, increased robustness in data-tracking and countering external economic shocks. The data presented is not meant to be comprehensive nor complete. Consequently, suggested future work addresses short-term, mid-term, and long-term strategies. Specific areas include examining causal linkages for mobile phone adoption, designing technology initiatives around sustainability goals, and drivers that facilitate technology transfer. Mobile telecommunication technology offers real opportunities for development and growth in Africa. If the focus of development shifts from mere economic growth to sustainable development, countries can not only transform their economic fortunes but also enhance the quality of their environment.<br>by Alexander Shih.<br>S.M.in Engineering and Management, and, in Technology and Policy
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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 effectively are often referred to by
the term digital divide (DDN, 2006). Does this sound quite pessimistic?
However, a change is taking place since all countries on earth from the richest to the poorest are
actually increasing their Ier usage. The problem is that the developed countries are using
convergence (three separate communication sectors: information technology,
telecommunications and broadcasting merging to become a single communication service sector)
to escalate their access to and use of ICf at a much higher speed, which in fact widens the digi tal
divide instead of shrinking it (Bridges.org, 2006). Today no country can afford to neglect
investments in ICf if it wishes to raise its living standards or to prevent it from being left behind
as other countries exploits the possibilities of ICf. Why is ICf considered to be an effective tool
for bridging the international digita1 divide? On the United Nations Development Programme's
website one can read: " .. .ICf is an increasi ngly powerful tool for participating in global markets;
promoting political accountability; improving the delivery of basic services; and enhancing local
development opportunities" (UNOP, 2003). These aspects can be of great importance for
developing countries in their effort to gain economic development and improvements.
Furthermore, it is also a question about every human's right to have access to infonnation (Sida,
2004).
According to Steve Case (AOL Time Warner, Chainnan of the Board) every decade has some
word associated with it. In the 'SOs, it was the PC. In the '90s, it was the Internet. For the rest of
this decade, the key word is going to be convergence (Thompson, 2003).
In Namibia a digital divide exists between income groups as well as between the country's rural
and urban population. Namibia is sti ll far from providing equal access to information, but
Namibia is well positioned to deploy ICf to its advantage. Namibia has a functional
telecommunication infrastructure, political stability and an attractive economic environment for
investors. However. the geographic and social challenges of Namibia require innovative
approaches and considerable effort. Competition and convergence will improve the situation.
recommended to expand the set of potential drivers and specifically focus on the relation
between convergence and economic growth.
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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.
Full textAbstract:
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 uncertainties involved in new product introduction in a global telecommunication market are presented in this dissertation. Fuzzy measure theory and fuzzy set theory are used to build a quantitative model of the executive decision-process at the front-end. Solutions to the problem of exponential complexity in defining fuzzy measures are also proposed. The notion of constrained fiizzy integrals demonstrates how the fuzzy measure-theoretical model integrates resource allocation in the presence of project interactions. Forging links between business strategies and expert evaluations of critical success factors is attempted through fuzzy rule-based techniques in the framework of the proposed model. Interviews with new product managers of several American business firms have confirmed the need for building an intelligent front-end decision support system for new product development. The outline of a fuzzy systems development methodology and the design of a proof-of-concept prototype serve as significant contributions of this research work toward this end. In the context of executive decision making, a usability inspection of the prototype is carried out and results are discussed. A computational analysis, based upon methods of tactical systems simulation, measures the rank order consistency of the fuzzy measure theoretical approach in comparison with two competing fuzzy multiple attribute decision models under structural variations of the underlying models. The results demonstrate that (1) the modeling of the fuzzy numbers representing the linguistic variables, (2) the selection of the granularity of the linguistic scales, and (3) the selection of the model dimensions significantly affect the quality of the decisions suggested by the decision aid. A comprehensive plan for future validation of the decision aid is also presented.
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Vicente, Sandro Antônio. "Análise da aplicação dos padrões TMN no gerenciamento de sistemas de CRM." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-13112003-234029/.
Full textAbstract:
Embora a tecnologia da informação (TI) venha sendo utilizada em aplicações de negócios desde a década de 60, foi só a partir do final da década de 80 que essas tecnologias transformaram-se em elementos essenciais para corporações de qualquer porte. Dessa forma, o perfil dos usuários de TI deixou de ser o das grandes corporações e passou a compreender também empresas de médio e pequeno porte. Atualmente, as TI são fartamente empregadas na realização e gestão de processos de negócios através de sistemas corporativos orientados para diversas finalidades como, por exemplo, ERP (Enterprise Resource Planning), SCM (Supply Chain Management) e CRM (Customer Relationship Management). Na medida que um sistema corporativo cresce e incorpora novas funcionalidades, cresce sua complexidade. Atualmente, tais sistemas compreendem diversos componentes heterogêneos, geograficamente distribuídos, administrados por diferentes organizações e seu gerenciamento apresenta-se como um novo desafio. Este trabalho analisa a aplicação de padrões abertos, definidos para a modelagem de sistemas distribuídos e para o gerenciamento de redes de telecomunicações, no gerenciamento de sistemas corporativos complexos. Especificamente, será analisada a aplicação do dos padrões TMN (Telecommunication Management Network), desenvolvido para o gerenciamento de redes de telecomunicações, no gerenciamento de sistemas de CRM, que apresentam extrema complexidade por envolverem diversas tecnologias, distribuição geográfica e diversas disciplinas (bancos de dados, ferramentas de análise de informações, redes de computadores, sistemas legados e diversas mídias de contato).<br>Despite the fact that the information technology (IT) has been applied for business purposes since the sixties, they only became essential to business in the late eighties, when the technology started to play an essential role for corporations of any size. Therefore, the profile of the typical IT user in business has shifted from huge companies to mid-sized and even small companies. Nowadays, IT is widely applied for the management of business processes through the use of corporate systems oriented for different purposes like, for example, ERP (Enterprise Resource Planning), SCM (Supply Chain Management) and CRM (Customer Relationship Management). As far as a corporate system grows and works in new features, grows its complexity as well. Nowadays, such systems usually comprise lots of different heterogeneous components, geographically distributed, administered by different organizations and, as a result, the management of such systems became a new challenge. This dissertation analyses the application of open standards, designed to allow the modeling of distributed systems and the management of telecommunication networks, to the management of complex corporate systems. More specifically, it will analyze the application of the TMN standards, developed for the management of telecommunications networks, to the management of CRM systems, where the latter presents extreme complexity due to the fact that it usually involves different technologies, geographical distribution and many disciplines (such as databases, information analysis tools, computer networks, legacy systems and various communication medias).
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He, Changhua, and 何昌華. "Resource management for handoff control in wireless/mobile networks using artificial neural networks." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31226000.
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Li, Yifang, and 李怡芳. "Effectiveness of telemedicine applications for weight management : a meta-analysis of randomized controlled trials." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206938.
Full textAbstract:
Background
The telemedicine application has great potential to address the prevalence of overweight and obesity, a severe the public healthcare burden in the 21st century. However, no exiting systematic review has been investigated the effectiveness of telemedicine application of weight reduction. The absence of quantitative evaluations and relatively rigorous qualitative assessments explains the carry-out of the present systematic review with a meta-analysis.
Objectives
The objectives are to determine the aggregated effect of thetelemedicine application to the management of overweight and obesity, in particular to investigate the effect of thetelemedicine application on reducing body weight, and to evaluate major contributable factors to commit a successful telemedicine intervention in body weight lowering.
Methods
This meta-analysis is guided by the PRISMA statement, with the automatic and manual searching by input keywords in the main databases. Only RCTs with absolute reduction of body weight as outcome measure, comparing the effect of the telemedicine application interventions with other stated interventions in reducing human body weightare potentially to be included. The selected RCTs are subject to the Jaded scale and the CONSORT for quality assessment. The studies identification and the data extraction were performed by two independent reviewers separately.The heterogeneity across the selected RCTs was assessed by Cochran Q test and I-square statistic. The meta-analysis was conducted with random-effect models and sensitivity analyses were performed by eliminating studies with extreme outcome values. Publication bias was examined through visual inspection of funnel plots and statistical assessments of the Begg‟s rank correlation test and the fail-safe N.
Results
723 studies were identified from the preliminary database searches, 32 full-text articles were retrieved to review, after which, 12 RCTs were subject to the quality assessment process. Only 10 RCTs of high quality were selected into the meta-analysis. The generalizability of the meta-analysis is great since the patients subgroups were broadly from different geographical and cultural settings with the age ranging from 18 to 70, and no comorbidity conditions were excluded. The single element, the telemedicine application intervention, contributed to a significant extra 4.17 kg absolute reduction of human body weight in the average time period of 42 weeks. The outcome of the sensitivity analysis excluding the studies with extreme outcome measures was also consistent with the finding, which means the telemedicine application intervention contributed to a significant extra 2.58 kg absolute reduction of human body weight in the average time period of 46.5 weeks.
Conclusions
The telemedicine application is an effective public health intervention with broad generalizability for weight reduction in the future. Further studies to assess the effect of the telemedicine intervention among the populations of the developing countries, especially the large Chinese population, and to evaluate the confounding effect of the Hawthorne effect are critically important to support the international guideline on the promotion of the telemedicine intervention.<br>published_or_final_version<br>Public Health<br>Master<br>Master of Public Health
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Lee, Tae-jin. "Traffic management and design of multiservice networks : the Internet and ATM networks /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
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Chiu, Wan Lan. "Competitive analysis : a case study of the mobile telecommunication services industry in Hong Kong." Thesis, University of Macau, 2003. http://umaclib3.umac.mo/record=b1636643.
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Choi, Myung Cheon. "Traffic flow management for RSVP/ATM edge devices." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15520.
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Pong, Dennis Electrical Engineering & Telecommunications Faculty of Engineering UNSW. "Quality of service support in multi-rate wireless networks." Awarded by:University of New South Wales. School of Electrical Engineering and Telecommunications, 2006. http://handle.unsw.edu.au/1959.4/25153.
Full textAbstract:
Packet switched wireless networks have become increasingly popular due to improvements in transmission speed, ease of deployment and mobility. Wireless technologies such as the IEEE 802.11 Wireless Local Area Networks provide transmission speeds capable of supporting multimedia applications. However, wireless channels suffer from short term effects such as interference and fading, and long term effects such as signal strength changes that are caused by user mobility. In multi-rate networks, stations can adapt to the channel variations by adjusting their physical transmission rates. This introduces resource management problems as resource usage depends on the application's bit rate as well as the physical transmission rate used. Multimedia applications demand consistent Quality of Service (QoS) performance from the network. This does not fit well with the dynamic nature of wireless networks. In this thesis, we propose a link layer resource manager to maintain application QoS requirements in multi-rate wireless networks. It consists of two components - Resource reservation and Medium Access Control (MAC) parameters selection. The resource reservation algorithm determines the current and future amount of channel resources required by a multimedia application and performs the function of admission control. This prevents any new traffic or physical transmission rate changes from degrading the QoS of the admitted traffic. The design of the MAC parameters selection algorithm is based on the IEEE 802.11e Enhanced Distributed Channel Access (EDCA) scheme. The algorithm enables the provision of QoS to individual multimedia applications with the prioritised service of EDCA. Analytical and simulation studies were performed to demonstrate the efficiency and effectiveness of the algorithms. The results highlighted the ability of the algorithms to mitigate the QoS provision problem in multi-rate wireless networks introduced by channel variations.
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Verett, Marianna J. "Performance and usage of biometrics in a testbed environment for tactical purposes." Thesis, Monterey, Calif. : Naval Postgraduate School, 2006. http://bosun.nps.edu/uhtbin/hyperion.exe/06Dec%5FVerett.pdf.
Full textAbstract:
Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, December 2006.<br>Thesis Advisor(s): Alex Bordetsky. "December 2006." Includes bibliographical references (p. 71-74). Also available in print.
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Lobry, Olivier. "Support Mémoire Adaptable Pour Serveurs de Données Répartis." Phd thesis, Université Joseph Fourier (Grenoble), 2000. http://tel.archives-ouvertes.fr/tel-00346893.
Full textAbstract:
Du fait qu'il constitue un passage obligé du flux d'information, un serveur de données joue un rôle central dans l'architecture d'un système d'information (SI). Il doit en conséquence implanter des mécanismes de gestion de ressources efficaces et des politiques de gestion adaptées aux caractéristiques comportementales du SI.<br />Il n'est malheureusement pas possible d'offrir un serveur de données universel capable de répondre aux exigences de tous les SI. Ceux-ci diffèrent en effet significativement par le type des informations qu'ils traitent, la nature des traitements effectués, les propriétés de traitement qu'ils garantissent, les caractéristiques du matériel sous-jacent, etc. De ce fait, chaque système d'information intègre son ou ses propres serveurs de données implantant des politiques de gestion figées.<br />Les inconvénients d'une telle approche sont loin d'être négligeables. Tout d'abord, la ré-implantation de mécanismes élémentaires de gestion de ressources augmente le coût de conception. Ensuite, la rigidité comportementale réduit considérablement la réactivité à l'évolution tant en qualité qu'en quantité des informations, traitements et ressources matérielles. Enfin, l'opacité des tels systèmes rend difficile leur coexistence sur une même plate-forme.<br />Cette thèse montre qu'il n'existe pas de politique de gestion de la mémoire idéale. Plutôt que d'essayer d'offrir un serveur idéal, elle tente de définir une infrastructure permettant de concevoir des serveurs de données adaptés et évolutifs. Elle adresse plus particulièrement le problème de la gestion de la mémoire physique et se place dans le contexte des grappes de machines. Elle propose le support mémoire adaptable ADAMS basé sur un modèle de gestion hiérarchique et un modèle de communication par événements. Ce support facilite l'intégration de différents types de politiques tout en séparant bien leurs rôles respectifs sans faire d'hypothèse sur leur inter-dépendances.<br />Une intégration d'ADAMS à la mémoire virtuelle répartie permanente et adaptable du système Arias est ensuite exposée. ADAMS étend les caractéristiques de ce système afin de prendre en compte les besoins particulier de gestion des serveurs de données tout en réduisant le grain d'adaptabilité. Nous illustrons à travers un exemple comment le support résultant permet d'implanter un serveur de données dont les politiques de gestion peuvent être adaptées dynamiquement.
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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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Kolar, Vinay. "Routing and traffic-engineering in multi-hop wireless networks an optimization based approach /." Diss., Online access via UMI:, 2007.
Find full text
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Jeon, Sung-eok. "Near-Optimality of Distributed Network Management with a Machine Learning Approach." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16136.
Full textAbstract:
An analytical framework is developed for distributed management of large networks where each node makes locally its decisions. Two issues remain open. One is whether a distributed algorithm would result in a near-optimal management. The other is the complexity, i.e., whether a distributed algorithm would scale gracefully with a network size. We study these issues through modeling, approximation, and randomized distributed algorithms. For near-optimality issue, we first derive a global probabilistic model of network management variables which characterizes the complex spatial dependence of the variables. The
spatial dependence results from externally imposed management constraints and internal properties of communication environments. We then apply probabilistic graphical models in machine learning to show when and whether the global model can be approximated by a local model. This study results in a sufficient condition for distributed management to be nearly optimal. We then show how to obtain a near-optimal configuration through decentralized adaptation of local configurations.
We next derive a near-optimal distributed inference algorithm based on the derived local model. We characterize the trade-off between near-optimality and complexity of distributed and statistical management. We validate our formulation and theory through simulations.
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Mazandu, Gaston Kuzamunu. "Traffic Engineering using Multipath Routing Approaches." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/679.
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Leung, Matthew Chung-Hin. "CMOS RF SOC Transmitter Front-End, Power Management and Digital Analog Interface." Thesis, Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24664.
Full textAbstract:
With the growing trend of wireless electronics, frequency spectrum is crowded with different applications. High data transfer rate solutions that operate in license-exempt frequency spectrum range are sought. The most promising candidate is the 60 GHz multi-giga bit transfer rate millimeter wave circuit. In order to provide a cost-effective solution, circuits designed in CMOS are implemented in a single SOC.
In this work, a modeling technique created in Cadence shows an error of less than 3dB in magnitude and 5 degree in phase for a single transistor. Additionally, less than 3dB error of power performance for the PA is also verified. At the same time, layout strategies required for millimeter wave front-end circuits are investigated. All of these combined techniques help the design converge to one simulation platform for system level simulation.
Another aspect enabling the design as a single SOC lies in integration. In order to integrate digital and analog circuits together, necessary peripheral circuits must be designed. An on-chip voltage regulator, which steps down the analog power supply voltage and is compatible with digital circuits, has been designed and has demonstrated an efficiency of 65 percent with the specific area constraint. The overall output voltage ripple generated is about 2 percent.
With the necessary power supply voltage, gate voltage bias circuit designs have been illustrated. They provide feasible solutions in terms of area and power consumption. Temperature and power supply sensitivities are minimized in first two designs. Process variation is further compensated in the third design. The third design demonstrates a powerful solution that each aspect of variations is well within 10%.
As the DC conditions are achieved on-chip for both the digital and analog circuits, digital and analog circuits must be connected together with a DAC. A high speed DAC is designed with special layout techniques. It is verified that the DAC can operate at a speed higher than 3 Gbps from the pulse-shaping FIR filter measurement result.
With all of these integrated elements and modeling techniques, a high data transfer rate CMOS RF SOC operating at 60 GHz is possible.
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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.
Full textAbstract:
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 abstraction because they link
end user application components like web browsers with system services like
http providing communications with embedded services like hardware-supported
data encryption. Service paths are system-level abstractions that are created
without end user, application, or middleware input, but despite these facts,
they are able to capture application-relevant performance metrics, including
end-to-end latencies for client requests and the contributions to these
latencies from application-level processes and from software/hardware resources
like protocol stacks or network devices.
Beyond conceiving of service paths and demonstrating their utility, this thesis
makes three concrete technical contributions. First, we propose a set of signal
analysis techniques called ``E2Eprof' that identify the service paths taken
by different request classes across a distributed IT infrastructure and
the time spent in each such path. It uses a novel algorithm called ``pathmap'
that computes the correlation between the message arrival and departure
timestamps at each participating node and detect dependencies among them. A
second contribution is a system-level monitoring toolkit called ``SysProf',
which captures monitoring information at different levels of granularity,
ranging from tracking the system-level activities triggered by a single system
call, to capturing the client-server interactions associated with a service
paths, to characterizing the server resources consumed by sets of clients or
client behaviors.
The third contribution of the thesis is a publish-subscribe based monitoring
data delivery framework called ``QMON'. QMON offers high levels of
predictability for service delivery and supports utility-aware monitoring
while also able to differentiate between different levels of service
for monitoring, corresponding to the different classes of SLAs maintained for
applications.
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Xie, Jiang (Linda). "Mobility Management in Next Generation All-IP Based Wireless Systems." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5190.
Full textAbstract:
Next generation wireless systems have an IP-based infrastructure with the support of heterogeneous access technologies. One research challenge for next generation all-IP based wireless systems is to design intelligent mobility management techniques that take advantage of IP-based technologies to achieve global roaming between various access networks. To support global roaming, next generation wireless systems require the integration and interoperation of heterogeneous mobility management techniques. Mobility in a hierarchical structure or multilayered environment should be supported. The objective of this study is to develop new mobility management techniques for global roaming support in next generation all-IP based wireless systems. More specifically, new schemes for location management and paging in Mobile IP for network layer mobility support, and new schemes for location management and handoff management in heterogeneous overlay networks for link layer mobility support are proposed and evaluated. For network layer mobility support, a distributed and dynamic regional location management mechanism for Mobile IP is proposed. Under the proposed scheme, the signaling burden is evenly distributed and the regional network boundary is dynamically adjusted according to the up-to-date mobility and traffic load for each terminal. Next, a user independent paging scheme based on last-known location and mobility rate information for Mobile IP is proposed. The proposed scheme takes the aggregated behavior of all mobile users as the basis for paging. For link layer mobility support, an IP-based system architecture for the integration of heterogeneous mobility management techniques is proposed. Three location management schemes under this IP-based architecture are proposed. All the three schemes support user preference call delivery which is a very important feature of next generation wireless communications. A threshold-based enhancement method is also proposed to further improve the system performance. Finally, a hybrid resource allocation scheme for handoff management in wireless overlay networks is proposed. Under this scheme, the overall system resources can be optimally allocated when mobile users are covered by multiple overlay networks.
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Goken, Burcu. "Investigation Of Gmpls Applications In Optical Systems." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606571/index.pdf.
Full textAbstract:
In this study, possible applications of label switching in large area, fully optical
networks are investigated. The objective was to design a label assignment method
by using Generalized Multi-Protocol Label Switching (GMPLS) concept to get an
efficient optical network operation. In order to fulfill this objective, two new
approaches were proposed: a label assignment method and a concatenated label
structure.
Label assignment method was designed to provide an efficient utilization of
resources. Concatenated label structure aimed handling the label in optical
domain. Mainly, the lambda switch capable GMPLS networks were investigated.
In order to verify the performance of label assignment method, a simulator was
developed.
The results of simulation have clearly indicated that the proposed approaches
could be beneficial in an optical network operation.
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Ahuja, Amit. "A Dynamic Attribute-Based Load Shedding and Data Recovery Scheme for Data Stream Management Systems." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1362.pdf.
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Ng, Hwee Ping. "Performance analysis of management techniques for SONET/SDH telecommunications networks." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FNg.pdf.
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Viljoen, Johannes Henning. "Modelling and optimal control of the market of a telecommunications operator." Diss., Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-09152004-100823.
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Zhu, Jian. "Indoor/Outdoor Location of Cellular Handsets Based on Received Signal Strength." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11489.
Full textAbstract:
Indoor/Outdoor Location of Cellular Handsets Based on Received Signal Strength
Jian Zhu
123 pages
Directed by Dr. Gregory D. Durgin
Accurate geo-location is an important emerging technology for public safety, commercial use, and military application. Especially, in the United States, the wireless Enhanced 911 (E911) rules by the Federal Communication Commission (FCC) seek to provide 911 dispatchers with additional information on wireless 911 calls.
This dissertation presents a novel technique for indoor/outdoor location of cellular handsets based on received signal strength (RSS) measurements taken by a cellular handset of the surrounding base stations. RSS location accuracy for different environments is studied as a function of base station separation distance, cell sector density, measurement density, radio propagation environment, and accuracy of measurement. The analytical and experimental results in this thesis serve as a guideline for the accuracy of RSS signature location technology under different conditions. Accurate outdoor to indoor penetration models are proposed and validated for dense urban areas by introducing pseudo-transmitters to simulate the wave-guiding effects in urban canyon environments. A set of location algorithms is developed to improve location accuracy. Furthermore, an algorithm to discriminate between indoor and outdoor users is proposed and validated. The research results demonstrate the feasibility of RSS location techniques to meet the FCCs requirements for E911 accuracy in urban and semi-urban environments. The techniques remain accurate for indoor handsets. The results also suggest that a hybridization of the handset-based GPS method and the RSS signature method may prove to be the most effective solution for locating handsets across a range of environments; including rural, suburban, dense urban, and indoor.