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Dissertations / Theses on the topic 'Computer network resources'
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Yang, Weilai. "Pricing Network Resources for Differentiated Service Networks." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5227.
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We developed a price-based resource allocation scheme for Differentiated Service (DiffServ) data networks. The DiffServ framework was proposed to provide multiple QoS classes over IP networks. Since the provider supports multiple service classes, we need a differentiated pricing scheme, as supposed to the flat-rate scheme employed by the Internet service providers of today. Charging efficiently is a big issue. The utility of a client correlates to the amount of bandwidth allocated. One difficulty we face is that determining the appropriate amount of bandwidth to provision and allocate is problematic due to different time scales, multiple QoS classes and the unpredictable nature of users.
To approach this problem, we designed a pricing strategy for Admission Control and bandwidth assignment. Despite the variety of existing pricing strategies, the common theme is that the appropriate pricing policy rewards users for behaving in ways to improve the overall utilization and performance of the network. Among existing schemes, we chose auction because it is scalable, and efficiently and fairly shares resources. Our pricing model takes the system's availability and each customer's requirements as inputs and outputs the set of clients who are admitted into the network and their allocated resource. Each client proposes a desired bandwidth and a price that they are willing to pay for it. The service provider collects this information and produces parameters for each class of service they provide. This information is used to decide which customers to admit.
We proposed an optimal solution to the problem of maximizing the provider's revenue for the special case where there is only one bottleneck link in the network. Then for the generalized network, we resort to a simple but effective heuristic method. We validate both the optimal solution and the heuristic algorithm with simulations driven by a real traffic scenario. Finally, we allow customers to bid on the duration for which the service is needed. Then we study the performance of those heuristic algorithms in this new setting and propose possible improvements.
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Nguyen, Thanh Vinh. "Content distribution networks over shared infrastructure a paradigm for future content network deployment /." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060509.094632/index.html.
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Richter, John Peter Frank. "An investigation into the design and implementation of an internet-scale network simulator." Thesis, Rhodes University, 2009. http://hdl.handle.net/10962/d1004840.
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Simulation is a complex task with many research applications - chiey as a research tool, to test and evaluate hypothetical scenarios. Though many simulations execute similar operations and utilise similar data, there are few simulation frameworks or toolkits that allow researchers to rapidly develop their concepts. Those that are available to researchers are limited in scope, or use old technology that is no longer useful to modern researchers. As a result of this, many researchers build their own simulations without a framework, wasting time and resources on a system that could already cater for the majority of their simulation's requirements. In this work, a system is proposed for the creation of a scalable, dynamic-resolution network simulation framework that provides scalable scope for researchers, using modern technologies and languages. This framework should allow researchers to rapidly develop a broad range of semantically-rich simulations, without the necessity of superor grid-computers or clusters. Design and implementation are discussed and alternative network simulations are compared to the proposed framework. A series of simulations, focusing on malware, is run on an implementation of this framework, and the results are compared to expectations for the outcomes of those simulations. In conclusion, a critical review of the simulator is made, considering any extensions or shortcomings that need to be addressed.
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Crause, Ewald. "The effect of using a computer-based exploration tool on children's career development learning." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1015020.
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Historically the process of career development was thought of as occurring in adolescence and adulthood; however, the renewed emphasis on lifelong career development has led to a greater focus on the career developmental stage of childhood. The present research focused on the development and trialling of a research-based computerised career exploration tool, Growing-up: Children Building Careers™ (GCBC™) that can be used for early intervention in children‘s career development. The integration of developmental considerations within a career developmental context is of paramount importance, considering that child and career developmental theories share certain basic foundational principles such as the dual recognition of identifiable life stages and the resolution or accomplishment of associated tasks. The focus of the research is to provide access to a research-based tool that can assist learners with developing age appropriate career developmental skills. As the overview of education policy and existing programs will show, there are challenges in providing access to and improving the nature, level, and quality of career development services. Gaps in access to career development learning are particularly evident at the elementary education level. Furthermore it is clear that learners need to be at the centre of a radical rethink of careers services within a lifelong learning framework in order to ensure access to navigational tools throughout a lifetime of work and study transitions. Digital environments, such as the GCBC™, are tools that broaden and extend learning possibilities for children and appropriately designed digital environments can provide a vehicle that can take children further than they might travel unassisted. The research is divided into five phases and includes eight to ten year old children as participants. Phase one focused on the program design and pilot study (ensuring content validity and age-appropriate language use), while phases two to five focused on the fieldwork (i.e., pre –test, program exposure, post-test, and focus group discussions). The researcher made use of a mixed research design that combines both quantitative and qualitative research methods. The total sample consisted of 146 children between the ages of eight to ten years old. The control group had 72 children and the experimental group 74 children with a mean age of 8.74 years (SD = 0.63) for the total sample. The quantitative data collection entailed a pre-and post-test design with learners‘ career development measured with the Childhood Career Development Scale (CCDS) and their career awareness with the Revised Career Awareness Survey (RCAS). Qualitative data was collected in the form of two focus group discussions, which included a small sample of children from the experimental group, as well as insights gained from educators following the GCBC™ fieldwork. The quantitative statistical analysis included descriptive and inferential statistics which allowed the researcher to not only describe the research findings, but to confirm the effectiveness of the GCBC™ as an intentional career development learning program. Furthermore, the responses of the children and educators who participated in or witnessed the facilitation of the GCBC™ provided support for the GCBC™ as a meaningful career learning experience which can be successfully implemented in educational settings.
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Bailey, Charles W. "Intelligent Multimedia Computer Systems: Emerging Information Resources in the Network Environment." Pierian Press, 1990. http://hdl.handle.net/10150/105658.
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A multimedia computer system is one that can create, import, integrate, store, retrieve, edit, and delete two or more types of media materials in digital form, such as audio, image, full-motion video, and text information. This paper surveys four possible types of multimedia computer systems: hypermedia, multimedia database, multimedia message, and virtual reality systems. The primary focus is on advanced multimedia systems development projects and theoretical efforts that suggest long-term trends in this increasingly important area.
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Sing, Min Yvonne Monica. "The development of a model for organising educational resources on an Intranet." Thesis, Port Elizabeth Technikon, 2003. http://hdl.handle.net/10948/221.
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The twenty-first century has found education at the crossroads of change. There are burgeoning challenges facing the modern educator. To rise to the importuning, educators find themselves turning to Information Technology for the answers. The technologies utilised in attempts to overcome the challenges often include the Internet and electronic educational resources. Although the Internet is not unduly called the Information Highway, it is also fraught with misleading and incorrect information. Educators’ arduous searches result in few good and useable resources. Thus, to store, organise and efficiently retrieve the discovered resources is a matter of time-saving. The aim of the study was to develop a method to organise and retrieve educational resources in an efficient and personalised manner. In order to do this, an exploration into pedagogy and educational paradigms was undertaken. The current educational paradigm, constructivism, proposes that each learner is an individual with unique learning and personal needs. To develop a new model, the current models need to be understood. The current solutions for the organising of educational resources are realised as several software packages, also called e-learning packages. A list of criteria that describes the essential requirements for organising educational resources was established. These criteria were based upon the pedagogical principles prescribed by educators and the practical technological frameworks necessary to fulfil the needs of the teaching/learning situation. These criteria were utilised to critique and explore the available solutions. It was found that although the available e-learning packages fulfil a need within their genre, it does not meet with the core requirements of constructivism. The resource base model seeks to address these needs by focussing on the educational aspects of resource delivery over an Intranet. For the purposes of storing, organising and delivering the resources, a database had to be established. This database had to have numerous qualities, including the ability to search and retrieve resources with great efficiency. Retrieving data in an efficient manner is the forte of the star schema, while the storing and organising of data is the strength of a normalised schema. It is not standard practice to utilise both types of schemas within the same database. A star schema is usually reserved for data warehouses because of its data retrieval abilities. It is customary to utilise a normalised schema for operational databases. The resource base model, however, needs both the storage facilities of an operational database and the efficient query facilities of a data warehouse. The resource base model, therefore, melds both schemas into one database with interlinking tables. This database forms the foundation (or the back-end) of the resource base. The resource base model utilises web browsers as its user interface (or front-end). The results of the study on the pedagogy, the current e-learning solutions and the resource base were written up within this dissertation. The contribution that this dissertation makes is the development of a technique to efficiently store, organise and retrieve educational resources in such a manner that both the requirements of constructivism and outcomes-based education are fulfilled. To this end, a list of technological and pedagogical criteria on which to critique a resource delivery technique has been developed. This dissertation also elaborates on the schema designs chosen for the resource base, namely the normalised schema and the star schema. From this schema, a prototype has been developed. The prototype’s function was two-fold. The first function is to determine the feasibility of the technique. Secondly, to determine the success of the technique in fulfilling the needs expressed in the list of criteria
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Schneck, Phyllis Adele. "Dynamic management of computation and communication resources to enable secure high-performances applications." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/8264.
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Jahani, Masoumeh. "Computer simulation of the osteocyte and bone lining cell network and the effect of normal physiological changes in cellular functions on that network." Thesis, University of Hull, 2012. http://hydra.hull.ac.uk/resources/hull:7112.
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Osteocytes play a critical role in the regulation of bone remodelling by translating strain due to mechanical loading into biochemical signals transmitted through the interconnecting lacuno-canalicular network to bone lining cells (BLCs) on the bone surface. This work aims to examine the effects of disruption of that intercellular communication by simulation of osteocyte apoptosis and microcrack in the bone matrix. A model of a uniformly distributed osteocyte network has been developed that stimulates the signalling through the network to the BLCs based on strain level. Bi-directional and asymmetric communication between neighbouring osteocytes and BLCs is included; with propagation of the signal through the network gradually decreasing by a calcium decay factor. The effect of osteocyte apoptosis and microcracks are then examined by preventing signalling at and through the affected cells. It is found that a small percentage of apoptotic cells and tiny microcracks both lead to a significant reduction in the peak signal at the BLCs. The simulation shows that either apoptosis of only 3% of the osteocyte cells or tiny microcrack of 42μm, 42μm below the surface leads to a significant reduction in the peak signal at the BLCs. Furthermore, experiments with the model confirm how important the location and density of the apoptotic osteocytes are to the signalling received at the bone surface. The result also shows the importance of the location and length of microcrack on the signalling of BLC. The first may explain a possible mechanism leading to increased remodelling activity observed with osteoporosis, and the second, the mechanism driving normal bone remodelling and maintenance.
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Kravets, Robin H. "Cooperative solutions to the dynamic management of communication resources." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/8195.
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Poon, Auliana. "Information technology and innovation in international tourism Implications for the Caribbean tourist industry /." Online version, 1987. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.383578.
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Mainville, Sylvie. "Investigating the Delivery of Therapeutic Recreation Services on the Internet: a Pilot Study Using Leisure Education for the Prevention of Alcohol Abuse." Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc278246/.
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This pilot study, grounded in social learning theory, demonstrated that leisure education services can be delivered on the Internet. Participants (n=40) successfully accessed the Web page program and responded to instruments and surveys. The treatment group (n=16) effectively completed four leisure education sessions on-line. Confidentiality, privacy, and anonymity issues were controlled. Responses were monitored and feedback provided as to the complexity of the program and comprehension
of the participants. The leisure education program had no significant effect on posttest measures of alcohol expectancies and leisure motivations. Mean changes frompretest to posttest may indicate trends. The small n and convenience sample may have introduced many extraneous variables. Professional implications include compliance issues (57% experimental mortality rate), technology-related anxiety, and limited professional competency to work in this environment. Future research which examines the provision of leisure education and other components of therapeutic recreation service on-line is
warranted.
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Pi, Seungho. "A review and analysis of East Central Indiana School Study Council corporations' web sites." Virtual Press, 2003. http://liblink.bsu.edu/uhtbin/catkey/1263927.
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The Web has become an essential part in the lives of individuals on a global scale. The Web provides information, data, and unprecedented international communicative powers. Because there is so much information available and the information may appear to be fairly anonymous, it is necessary to evaluate what one finds on the Web. How can Web users believe all the information that is available on it? Is the information authoritative, reliable, and trustworthy? And, from the reverse perspective, how can Web developers or providers make Web users confident about the information on the Web?There currently is no research-based Web site evaluation instrument aimed at evaluating school district Web sites. In addition, the problem of this study is to respond to the expressed need of the East Central Indiana School Study Council (ECISSC) school corporations' superintendents for a set of guidelines for developing their Web sites and to develop an evaluation tool for assessing the Web site's effectiveness.The researcher specifically examines the degree of quality of the Web sites using the researcher-developed checklist containing 137 items divided among 10 categories: authority, accuracy, objectivity, currency, coverage and intended audience, interaction and transaction features, navigational aids, non-text features, professional development, and recruitment features. Of the 10 Web evaluation categories, navigational aids (50.42%), accuracy (42.06%), and authority (41.8%) are the highest rated components. ECISSC Web contents receiving the lowest ratings include recruitment and retention features (6.74%), interaction and transaction features (8.70%), currency (8.95%), and professional development (9.33%).The findings of this study provide specific guidance to individual school corporations to retain quality Web site components and to further the development and refinement of specific elements in each of the 10 identified Web assessment categories. Individual school corporations and ECISSC school corporations' profiles are presented to assist school officials in their efforts to improve school Web site designs and contents. The 10 Web evaluation categories and 137-checklist items can be used to assess and improve school Web site and can increase their effectiveness and efficiency to promote enhanced school-community relations and understanding among stakeholders.Department of Educational Leadership
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Zhang, Ying. "Development of a web-based mechanical design resource center /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1426120.
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Kushmerick, Nicholas. "Wrapper induction for information extraction /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/6867.
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Munishwar, Vikram P. "Storage and indexing issues in sensor networks." Diss., Online access via UMI:, 2006.
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Song, Haitao. "Information management in the travel industry: The role and impact of the Internet." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=init_6662_1178282746.
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In this information age, the Internet has found a role in various industries such as transportation, advertising, etc. The travel industry, in which communication between travellers and travel service providers is a very important component, has as much potential as any other industry to make full use of this new medium. Already, most travel agencies and travel service providers promote their products and services using web sites. Searching for information online is now seen by many people as a way to save time and cost, especially in their travel activities. In order to fully deploy the Internet within the travel industry, understanding the use of the Internet in tourism is critical. This research sets out initially to examine the role and the impact of the Internet in the whole of the travel industry. But in order to define an achievable scope of work and because of its importance in South Africa at this time, tourism within the travel industry was chosen as the focus of the work.
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Hsieh, Dennis Meng Yann. "Food Wholesale Ordering System." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2897.
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FWOS (Food Wholesaler Ordering System) demonstrates the application of web services to provide an ecommerce solution for general food wholesaler and their customers. The main goal of this project is to provide graphical user interfaces for the four user types including visitor, member, sales person and sales manager. The system provides a contact base ordering system, an account management sub-system, and a powerful accounting subsystem.
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Elsmore, Chris. "Neighbourhood Watch : social resource monitoring." Thesis, Swansea University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678659.
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Rife, Randolph Charles. "Arrangement of English Department web sites." Virtual Press, 2000. http://liblink.bsu.edu/uhtbin/catkey/1179131.
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This study describes the arrangement of four English department web sites. Arrangement is developed as an originally rhetorical, but now interdisciplinary, concept that is particularly relevant to web sites. For the purposes of the descriptions, this concept is broken into three aspects: how the home page of a site labels and lists links to other pages within the site, how the pages of the site are linked in respect to one another, and how visual elements indicate the structure of a site. Screen captures facilitate the descriptions. The sites are critiqued, and the findings are used to make suggestions for Ball State's English department web site and for English department sites generally.Department of English
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Barr, Donald J. "Splinter : a website constructed for the creation, development, and dissemination of thematic creative writing." Virtual Press, 2005. http://liblink.bsu.edu/uhtbin/catkey/1327288.
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This project has presented a web site (splinteronline.net) as a digital forum to explore stories in all its forms.Stories are at the core of human communication. We use stories to educate, enlighten, and entertain and we actively seek out stories from others. This dynamic narrative exchange takes many forms — conversation, journalism, film, television, radio, literature, Internet — and will continue to expand and endure as new ways of presenting stories emerge.My creative project actively participates in this exchange by offering a forum for users to engage and share their stories with others. Like a barrel catching rainwater, the site serves as a kind of digital downspout that funnels stories into various themes like Grace, Anger, Home, Mother, Solitude, Regret, Jazz, Courage, Justice, Work, and Greed. Each theme is then identified by genre — humor, fact, memoir, fiction, editorial, poetry — to allow users to search for their favorites.Department of Telecommunications
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Santini, Giovanni. "Explorations in augmented reality for interactive gesture-based musical notation." HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/734.
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With its capability of merging virtual and real worlds, Augmented Reality (AR) provides a new framework for professional practices in numerous disciplines: it can deliver interactive pieces of information in real-time and in space. In music, such capabilities can have an important role in music notation and interfaces for electronic music performance. Numerous experimental musical applications have been developed since the early 2000s both for education and performance. However, in most circumstances, AR has been seen more as an aide towards the understanding and/or realization of traditional repertoire rather than a game-changing technology able to foster new artistic practices. There are still many uses yet to be explored, especially concerning compositional practice This dissertation also paves the way to a new repertoire in which the unprecedented possibilities offered by AR might be fully adopted and developed. This is an explorative work, structured mainly by a series of articles written solely by the author and published during his PhD studies (or accepted for publication at the time of writing). In these papers, a set of differentiated applications and compositions in the AR field are realized. The main thread that links all of the studies lies in the investigation of the relationship between AR and gesture-based musical practices (such as gesture-based control of spatialization and AR augmented instruments). A central role played by gesture-based music notation is the capability to notate a gesture in the space, with its exact coordinates and its exact velocity. Such a novel form of notation, enabled by AR technology and impossible in other domains, can also be enriched with interactive capabilities. As discussed in some studies included in this dissertation, virtual objects assigned to notational functions can also be assigned, simultaneously, to interface functions, thus creating interface-notation hybrids. Other studies of this dissertation address the capability of a virtual object changing its functions over time: AR notation can also be transformed into a virtual performer or into a visual augmentation of gesture. Another hopeful contribution of this dissertation to the musical use of AR lies in providing technical explanations of implementation procedures that could serve as a background for the creation of best practices
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Farrugia, James A. "Semantic Interoperability of Geospatial Ontologies: A Model-theoretic Analysis." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/FarrugiaJA2007.pdf.
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Kwok, Ki-wa Joyce. "Hong Kong international telecommunications : strategic issues /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1883727X.
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Khunyeli, Ramotsamai Itumeleng. "'Technic' practices of the computer game Lanner: identity development through the LAN-gameplay experience." Thesis, Rhodes University, 2011. http://hdl.handle.net/10962/d1013405.
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This thesis is a reception analysis using qualitative interviews to investigate the formation of cultural groups around computer-game LANs present in Rhodes University. It also looks at how issues of social inequalities evident on the university's campus impact on the participation of students in these LANs. The findings of this study are that the participants have established a community around the practice of computer LAN-gameplay based on values developed through the combination of the material and gameworlds. It serves as a home-on-campus for them; where they can fully explore their passion for games thus reaffirming their identity as gamers on a campus where being a gamer is viewed negatively. In this light, computer-game playing is not just a practice these participants perform, but a culture they live out every day. This is a culture predominantly lived out by men. One of the reasons for this is because most women have been raised to believe to have negative predispositions about digital gaming e.g. that it is childish, addictive and anti-social, but also that computer are meant to be used by men - women use them only when it is absolutely necessary, for example, that it is childish, for academic-related purposes. As a result, not many of them will use computers for any otherreason for fear of being socially criticised. In addition, the gaming culture being dominated by whites is due to the fact that admittance in to this community is still unaffordable for the majority of black students on the Rhodes University campus as a result of their social backgrounds.
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Bharatkumar, Ashwini. "Distribution network use-of-system charges under high penetration of distributed energy resources." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97942.
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Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, Engineering Systems Division, 2015.Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 66-69).
Growing integration of distributed energy resources (DER) presents the electric power sector with the potential for signicant changes to technical operations, business models, and industry structure. New physical components, control and information architecture, markets, and policies are required as the power system transitions from one of centralized generation and passive load to a network of increasingly decentralized generation and diverse system users. Price signals will play a crucial role in shaping the interactions between the physical components and users of the electric power system. Distribution network use-of-system (DNUoS) charges signal to network users how their utilization of the distribution system impacts system costs and each user's share of those costs. Distribution utilities cover network operation and maintenance costs and recover infrastructure in- vestments through DNUoS charges applied to network users. This thesis develops a framework for the design of DNUoS charges that addresses the challenge of distribution network cost allocation under growing penetration of DER. The proposed framework is comprised of 1) the use of a reference network model (RNM) to identify the key drivers of distribution system costs and their relative shares of total costs, and 2) the allocation of those costs according to network utilization profiles that capture each network user's contribution to and share of total system costs. The resulting DNUoS charges are highly differentiated for network users according to the impact that network use behaviors have on system costs. This is a substantial departure from existing methods of distribution network cost allocation and thus presents implementation challenges and implications that may be addressed in a range of ways to achieve varying regulatory objectives.
by Ashwini Bharatkumar.
S.M. in Technology and Policy
S.M.
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Vuza, Xolisa. "Social and technical issues of IP-based multi-modal semi-synchronous communication: rural telehealth communication in South Africa." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&.
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Most rural areas of developing countries are faced with problems like shortage of doctors in hospitals, illiteracy and poor power supply. Because of these issues, Information and Communication Technology (ICT) is often sees as a useful solution for these areas. Unfortunately, the social environment is often ignored. This leads to inappropriate systems being developed for these areas. The aims of this thesis were firstly, to learn how a communication system can be built for a rural telehealth environment in a developing country, secondly to learn how users can be supported to use such a system.
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Allen, Patricia Dougherty. "WebQuest investigation to acquire internet usage skills." CSUSB ScholarWorks, 2002. https://scholarworks.lib.csusb.edu/etd-project/2077.
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The purpose of this project was to develop a WebQuesst investigation that would facilitate student Internet usage. A WebQuest investigation is an inquiry-oriented activity in which most or all of the information that learners interact with comes from resources on the Internet.
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Ngindana, Mongezi. "Visibility of e-commerce websites to search engines : a comparison between text-based and graphic-based hyperlinks /." Thesis, Click here for online access, 2006. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1081&context=td_cput.
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Brown, Mona-Lee C. "Merging forces : issues for contention in the merging of traditional media forms." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/17694.
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Wong, Nga-man, and 黃雅敏. "Quality evaluation of geriatric health information on Yahoo! Answers : a cross-cultural comparative study." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193007.
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Given the increases on global ageing population, popularity of social Q&A sites and the level of geriatric health concerns from family caregivers, it raises the uncertainty about the quality of health information on social Q&A sites for family caregivers of elderly. The purposes of this study are to evaluate the quality of geriatric health information on social Questions and Answers (Q&A) sites: Yahoo! Answers from registered nurses’ perspective, to identify the structural patterns of questions and answers vary in quality and to discover the cultural aspects in relation to the findings. A total of 60 question-answers set is retrieved from regional Yahoo! Answers sites, including Australia, Canada, UK & Ireland, US, Hong Kong, Mainland China and Taiwan. 126 English answers and 112 Chinese answers are examined.
Through a mixed method approach, results show that the overall information quality provided in Chinese group is relatively poorer than those of English. About 40% of questioners form both groups are not capable of judging the best answer among choices. In terms of structural patterns, questioners from both language groups are less capable of asking questions with clear focuses. 4 structural patterns, including Chinese and English answers with good and poor quality, are identified. Furthermore, cultural differences are found to have a significant impact on the level of information quality in social Q&A site. Finally, recommendations to corresponding social sectors are made for improving the current information quality of social Q&A sites in future.published_or_final_version
Library and Information Management
Master
Master of Science in Library and Information Management
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Duong, Binh T. "Comparisons of attacks on honeypots with those on real networks." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Mar%5FDuong.pdf.
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Nguyen, Cong Duc. "Creation and distribution of real-time content a case study in provisioning immersive voice communications to networked games /." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20070110.164837/index.html.
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魯葉大 and Yip-tai Darryl Lo. "A study of a 3D virtual learning environment in education: active world Eduverse." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31256405.
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Borgardt, M. Luther. "Attitudes towards the use of computers by registered nurses." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2616.
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Coleman, Alfred. "Developing an e-health framework through electronic healthcare readiness assessment." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1519.
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The major socio-economic development challenges facing most African countries include economic diversification, poverty, unemployment, diseases and the unsustainable use of natural resources. The challenge of quality healthcare provisioning is compounded by the HIV/AIDS pandemic in Sub Saharan Africa. However, there is a great potential in using electronic healthcare (e-health) as one of the supportive systems within the healthcare sector to address these pressing challenges facing healthcare systems in developing countries, including solving inequalities in healthcare delivery between rural and urban hospitals/clinics. The purpose of this study was to compile a Provincial E-health Framework (PEHF) based on the feedback from electronic healthcare readiness assessments conducted in selected rural and urban hospitals/clinics in the North West Province in South Africa. The e-healthcare readiness assessment was conducted in the light of effective use of ICT in patient healthcare record system, consultation among healthcare professionals, prescription of medication, referral of patients and training of healthcare professionals in ICT usage. The study was divided into two phases which were phases 1 and 2 and a qualitative design supported by a case study approach was used. Data were collected using different techniques to enhance triangulation of data. The techniques included group interviews, qualitative questionnaires, photographs, document analysis and expert opinions. The outcome of the assessment led to the compilation of the PEHF which was based on Service Oriented Architecture (SOA). SOA was chosen to integrate the hospitals/clinics‟ ICT infrastructure yet allowing each hospital/clinic the autonomy to control its own ICT environment. To assist hospitals/clinics integrate their ICT resources, this research study proposed an Infrastructure Network Architecture which clustered hospitals/clinics to share common ICT infrastructure instead of duplicating these resources. Furthermore, processes of the e-health services (e-patient health IV record system, e-consultation system, e-prescription system, e-referral system and e-training system) were provided to assist in the implementation of the PEHF. Finally, a set of guidelines were provided by the research study to aid the implementation of the PEHF.
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Banoobhai-Anwar, Ilhaam. "The role of e-commerce in five-star hotels in the Cape Town Metropole." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2489.
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Thesis (MTech (Tourism and Hospitality Management))--Cape Peninsula University of Technology, 2016.Electronic commerce, popularly referred to as e-commerce, is the latest catchphrase surrounding the Internet and its many functions. In the past, the Internet was solely used for information seeking, but the 21st century has brought a new global economy to the fore – one that is conducted online. Tourism is seen as a driver of economic growth, contributing both to the Gross Domestic Product (GDP) of South Africa (SA) and creating jobs in the hospitality sector. E-commerce does not only provide a platform for business to be conducted online but also an opportunity for consumers to interact directly with industry. Many studies have been done previously about the perceived benefits of e-commerce in the retail sector, yet none in Cape Town and at five-star hotels in particular. It is well known that holidaymakers conduct an online search prior to booking accommodation; some of those potential guests in turn choose to finalise their bookings online. The purpose of the study was to investigate the role of e-commerce in five-star hotels in the Cape Town Metropole. The main objective of this study was to define what e-commerce is for five-star hotels in the Cape Town Metropole and determine if the hotels are using e-commerce as a booking method. Online questionnaires were used to gather primary data and a literature review was presented as secondary data. The findings of this study showed that all the hotels surveyed use online bookings and half of the respondents believe Online Travel Agents (OTAs) generate more revenue than traditional methods of room reservation. When asked to rank methods of room’s reservations, there was a slight difference between telephone bookings and e-commerce as number one. This could mean that while electronic methods are popular, they have not completely replaced traditional methods. The researcher recommends that five-star hotel managers train the rooms’ division staff to respond to negative reviews on social media, as this was one of the findings. The hotels should also learn how to effectively use their social media presence to increase room sales.
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Rassau, Anoushka. "Effects of synchronous chat-based on-line cognitive behavior therapy on study related anxiety and behavior." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2001. https://ro.ecu.edu.au/theses/1067.
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Very little research is currently available about therapy conducted in chat-based Internet environments. Most of the existing research concerns therapy delivered via email or on-line support groups. For this reason, this review first presents an overview of literature concerning practical issues relevant to Internet-based therapy in general and then presents a review of the research that is available regarding therapy provided in chat-based Internet environments. The literature reviewed in this paper has been obtained from several on-line databases and Internet search engines. The available research on chat-based therapy has produced mainly anecdotal or inconclusive results. There is a need for controlled research that more clearly displays the relationship between an intervention provided in a chat environment and the participants' problems.
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Witosurapot, Suntorn, and wsuntorn@fivedots coe psu ac th. "Resolving competition for resources between multimedia and traditional Internet applications." Swinburne University of Technology, 2004. http://adt.lib.swin.edu.au./public/adt-VSWT20050309.123048.
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Although the Internet is the dominant broadband network, it still has a fundamental shortcoming in traffic management that does not properly support efficient use of resources together with differentiated quality of service for mixed traffic types. Even though a number of mechanisms have been proposed under key approaches of resource adaptation, resource reservation, and resource pricing, this problem remains unsolved to date because of its complexity and the way it relates to so many considerations of engineering and economics, and the diverse range of services desired by users. Hence it is considered difficult to devise a perfect mechanism that can universally solve this problem. In this respect, this dissertation contributes to insights into potential combinations and trade-offs of key approaches above in some efficient manner for managing traffic and scarce resources in the Internet. The first part of this work considers the combination of relaxed resource reservation and resource pricing schemes for handling the unfair bandwidth distribution problem in soft-bandwidth guarantee services of the Differentiated Services (DiffServ) Internet. We show that this unfairness problem can be handled using a network-user cooperative approach that addresses both individual user satisfaction and global optimization. We propose to add a mechanism based on price-based feedback signaling to DiffServ-capable routers providing Assured Forwarding (AF) Service so that they can offer per-flow signaling. This still allows them to work at an aggregate traffic level, hence the scalability feature of the DiffServ network can be retained. Our proposed mechanism allows the network to offer reliable service assurances via a distributed optimization algorithm, without introducing special protocols or requiring routers to have access of individual user requirements. Moreover, it can provide incentives for users to cooperate so that optimum performance can be accomplished. This approach has broad applicability and is relevant to all types of assured service classes. The second part of this work considers the combination of a specific resource pricing scheme based on a distributed optimization algorithm and multimedia adaptation schemes. Such a capability has not been available because most utility functions of multimedia applications do not meet the concavity constraints required by optimization algorithm. We proposed to overcome this limitation by redefining user utility functions into equivalent discrete forms and using combinatorial (discrete) optimization so that interfacing the resource-pricing scheme can be done in a normal way. However, to obtain feasible solutions in a scalable manner, an agent is included into the scheme for solving the combinatorial (discrete) optimization on behalf of a small group of users. In return, all users belonging to this group can benefit from social welfare maximization of their utilities over a network resource constraint. The last part of this work considers the combination of relaxed resource reservation and resource pricing schemes to enable a proper charging scheme for adaptive applications in the DiffServ Internet. We provide an optimization formulation of the problems of revenue and social welfare maximization, applied at a service provider (SP) who gives access to the DiffServ Internet. In this scheme, resources are provisioned per QoS-oriented class in a long time scale (service level agreement (SLA) duration), then priced based on user demand in the short time scale. We also show that the proposed charging scheme can provide feedback and incentives for users to use the network resource optimally via the standard packet marking, hence eliminating the need for specific pricing protocol. All of the proposals in this work can be used together, solving these key problems as a coordinated whole, and all use readily available network mechanisms.
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Rothman, Jonathan Sean. "A framework for the secure use of portable storage devices : a South African higher education perspective." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1054.
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South African Higher Education has gone through various changes and challenges, one of these being the merger process. Various Universities and Technikons were forced to merge in an effort to aid the transformation and restructuring of the Higher Education landscape in the post-apartheid era. From an ICT point of view, the merged Institutions ended up with massive and distributed computing facilities. These facilities must be managed and secured and it can be appreciated that the complexity and magnitude of this task is compounded by the large and varied user population (i.e. students) using the facilities. With the exploding use of mobile consumer devices (such as cell phones, personal digital assistants, MP3 players, portable storage devices such as flash drives, etc), Higher Education Institutions are faced with the even more complex task of managing and securing the computing infrastructure, while large numbers of students can enter computer labs and use these devices at random. In some circles, portable devices are touted to be the next panacea in higher education. This, together with the popularity these devices enjoy under the student body, makes it a fait accompli that mobile consumer devices are “here to stay”. Therefore, banning these devices from campus computer labs, is not viable. Universities have to find ways to address security issues through the implementation of appropriate protective measures. This research focuses on finding a solution to mitigating the risks imposed on Higher Education Institutions in South Africa caused by the use of portable storage devices. The research proposes a framework which serves as an outline for the countermeasures that Universities must implement to mitigate the risks inherent to the use of portable storage devices. The scope of the research is limited to flash drives, smart phones and MP3 players.
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Herman, Nicoline. "The applicability of international benchmarks to an internet-based distance education programme at the University of Stellenbosch." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52484.
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Thesis (MPhil)--University of Stellenbosch, 2001.ENGLISH ABSTRACT: The publication of the Report of the National Commission on Higher Education (NCHE) in 1996, the White Paper on Higher Education (1997) and the Size and Shape Report (2000) has profoundly changed the landscape of Higher Education in South Africa. Institutions of Higher Education have to re-think, among others, their teaching and learning strategies including the integration and use of technology. Although the use of technology in higher education is still in the early stages, the use of Information and Communication Technologies (ICTs) is growing rapidly. The University of Stellenbosch started to integrate the Internet in their teaching in 1998. Research was undertaken to find a suitable on-line course management system and Web Course Tools (WebCT) was chosen for this purpose. Since it was implemented, the use of WebCT has grown exponentially, although in most cases only as an add-on to classroom lectures. The World Health Organisation (WHO) Mental Health Disorders in Primary Care programme was the first programme developed as a full distance education course, delivered completely by means of WebCT and making use of the team approach to programme development. This programme was therefore chosen as the case study for this research. The purpose of this study is to apply 24 internationally developed benchmarks for quality on-line distance education to the WebCT component of the WHO programme in order to determine the applicability of these benchmarks for World Wide Web (WWW) programmes at the University of Stellenbosch. The research strategy for this study is a qualitative case study. Qualitative data was obtained by conducting semi-structured interviews with the individuals involved in the design, development and implementation of the WHO course. The study concludes that the 24 benchmarks cannot be applied to the current University of Stellenbosch context. The systems at the US will either have to be adapted, or established to meet the requirements of the international benchmarks. Another option for the US could be to develop their own benchmarks, taking international guidelines into account.
AFRIKAANSE OPSOMMING: Die publikasie van die Nasionale Kommissie vir Hoër Onderwys se verslag in 1996, die Witskrif vir Hoër Onderwys 1997 en die onlangse "Size and Shape" Verslag, het die scenario vir Hoër Onderwys in Suid-Afrika onherroeplik verander. Hoër Onderwys instellings is besig om, onder andere, die strategieë wat leer en onderrig bevorder, in heroorweging te neem en dit sluit die integrasie of gebruik van tegnologie as een van die belangrikste punte in. Alhoewel die gebruik van tegnologie in Suid-Afrika nog in 'n beginstadium is, groei die gebruik hiervan ongekend. Die Universiteit van Stellenbosch het sedert 1998 begin om die Internet in leer en onderrig te benut. Navorsing is gedoen oor 'n geskikte elektroniese kursusbestuurstelsel en die keuse het op "Web Course Tools (WebCT)" geval. Sedert die implementering hiervan het die gebruik eksponensiële groei beleef. In die meeste gevalle word WebCT bykomend tot klaskameronderrig gebruik. Die "World Health Organisation (WHO) Mental Health Disorders in Primary Care" programme was een van die eerste, volledige afstandsonderwysprogramme wat van die spanbenadering tot programontwikkeling gebruik gemaak het. Die program is daarom ook as gevallestudie vir hierdie navorsing gekies. Die doel van hierdie navorsing is om 24 internasionale kriteria vir kwaliteit Internet afstandsonderrig, toe te pas op die WebCT komponent van die bogenoemde WHO kursus, ten einde te bepaal of die kriteria toepaslik is vir Internetkursusse binne die Universiteit van Stellenbosch konteks. Die navorsingstrategie wat aangewend is om die doel van hierdie navorsing te bereik, is 'n kwalitatiewe gevallestudie. Kwalitatiewe data is verkry deur semi-gestruktureerde onderhoude met die persone te voer wat betrokke was by die ontwerp, ontwikkeling en implementering van die WHO program. Die afleidings wat deur hierdie studie gemaak word, is dat die 24 kriteria nie toepaslik is vir die huidige Universiteit van Stellenbosch konteks nie. Die US sal dus die huidige sisteme moet verander of sisteme vestig ten einde aan internasionale standaarde te voldoen. 'n Ander opsie sou wees om 'n eie stel kriteria, gebaseer op die internasionale kriteria, te ontwikkel.
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Takaoka, Haruyoshi. "Business-to-consumer electronic commerce in Japan." CSUSB ScholarWorks, 2004. https://scholarworks.lib.csusb.edu/etd-project/2707.
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The purpose of the project was to examine the current situation of B2C e-commerce in Japan, consumers' online purchasing behavior, and attributes affecting online purchases. Since many companies are interested in starting or have started B2C e-commerce businesses, this study would aid companies in developing marketing strategies that would grow their businesses and build loyalty among consumers.
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Asher, James Wayne. "Integration of the Internet in career exploration in education." CSUSB ScholarWorks, 2001. https://scholarworks.lib.csusb.edu/etd-project/1919.
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Li, Shu-leung Sammy. "The evolving internet services industry in HK : strategic management on changes and service innovation /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18831308.
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Kaercher, Deborah J. "The development of a south Texas health information gateway : negotiating the construction of information." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2007. https://ro.ecu.edu.au/theses/300.
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This study examines the challenges, issues and complexities surrounding the construction of information for a South Texas Internet-based, health information gateway. It explores the collaborative and negotiated power dimensions and partnerships that supported this effort and the implications of online technological innovation for women's health choices. The context of the study is the online South Texas Health Information Gateway, a health information and communications-based effort that emerged in response to a stated community need to improve access to local, relevant and time-sensitive health information, resources and support for women and their families.
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McEnnis, Daniel. "On-demand metadata extraction network (OMEN)." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99382.
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OMEN (On-demand Metadata Extraction Network) addresses a fundamental problem in Music Information Retrieval: the lack of universal access to a large dataset containing significant amounts of copyrighted music. This thesis proposes a solution to this problem that is accomplished by utilizing the large collections of digitized music available at many libraries. Using OMEN, libraries will be able to perform on-demand feature extraction on site, returning feature values to researchers instead of providing direct access to the recordings themselves. This avoids copyright difficulties, since the underlying music never leaves the library that owns it. The analysis is performed using grid-style computation on library machines that are otherwise under-used (e.g., devoted to patron web and catalogue use).
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Burns, Christine Vanda Law Faculty of Law UNSW. "Online legal services - a revolution that failed?" Awarded by:University of New South Wales. School of Law, 2007. http://handle.unsw.edu.au/1959.4/32468.
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In the late 1990s a number of law firms and other organisations began to market online products which "package" legal knowledge. Unlike spreadsheets, word processing software and email, these products are not designed to provide efficiency improvements. Rather, online legal knowledge products, which package and apply the law, were and are viewed by many as having the potential to make major changes to legal practice. Many used the term &quitrevolution" to describe the anticipated impact. Like any new technology development, many intersecting factors contributed to their development. In many ways they built on existing uses of technology in legal practice. The various information technology paradigms which underpin them - text retrieval, expert systems/artificial intelligence, document automation, computer aided instruction (CAI) and hypertext - were already a part of the "computerisation of law". What is new about online legal knowledge products is that as well as using technology paradigms such as expert systems or document automation to package and apply the law, they are developed using browser-based technologies. In this way they leverage the comparative ease of development and distribution capabilities of the Internet (and/or intranets). There has been particular interest in the impact of online legal knowledge products on the legal services provided to large commercial organisations. With the increasing burden of corporate compliance, expanding role of the in-house lawyer and pressure to curb costs, online legal knowledge products should flourish in commercial organisations and many have been adamant that they will. However, there is no convincing evidence that anything like a "revolution" has taken place. Success stories are few and far between. Surprisingly few have asked whether this "revolution" has failed, or seriously analysed whether it lies ahead. If it does lie ahead, what factors, if any, need to taken into account in order for it to take place? If there is to be no revolution, what value should be placed on online legal knowledge products? In this dissertation I use the findings of my own empirical work, supported by a literature survey, to demonstrate that the impact of online legal knowledge products has been modest. I argue that in order to build successful online legal knowledge products it is necessary to appreciate that a complex system of interacting factors underpins their development and use,and address those factors. I propose a schematic representation of the relationships involved in producing an online legal knowledge product and use the findings of some empirical work, together with a review the literature in related fields, to identify the factors relevant to the various components of this framework. While there are many interacting factors at play, four sets of considerations emerge from my research as particularly important: integrating different technology paradigms, knowledge acquisition, usability, and implementation. As a practical matter, the implication of these findings is that some online legal knowledge products are more likely to be successful than others, and that there are other technology applications that may represent a better investment of the limited in-house technology budget than many online legal knowledge products. I also argue that while most of the challenges involved in integrating different technology paradigms, improving usability, and effective implementation can be addressed with varying levels of effort, the problem of the knowledge acquisition bottleneck is intractable. New approaches to knowledge acquisition are required to overcome the knowledge acquisition bottleneck. I identify some potential approaches that emerge from my research: automation, collaboration and coalition, phasing and simple solutions.
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Momo, Alain Michael. "The benefits of online company registration for Congolese immigrants." Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/971.
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Thesis (MTech (Business Administration))--Cape Peninsula University of Technology, 2011Online company registration is a service, which has been claimed by Congo-Brazzaville immigrant entrepreneurs. It has taken centuries for scientists to develop computers that successfully enable businesses to grow in an effective erasure of national frontiers for business purposes. B2B e-commerce, which heralded the dawn of globalisation in the EU, USA, India, New Zealand and South Africa, is not yet applicable in Congo- Brazzaville. Presently, B2B e-commerce has made the global economy porous, which consequently activated online business registration. This porosity has enabled SMMEs to save supply chain management costs, create jobs, improve customer care and contribute to the country’s GDP. However, owing to the characteristics of Congolese immigrants’ SMMEs in Cape Town, online business registration has become imperative to enable them to expand in Congo and to save supply chain management costs and contribute to the country’s economic reconstruction process. Recently, the Centre For Business and Administrative Procedures (CFBAP): Centre des Formalités Administratives des Entreprises’ (CFE) B2B e-commerce website has become in demand. Furthermore, at a national level, e-commerce website adoption at CFBAP will leverage the country’s standards of conducting business and will boost the pride of CFBAP, as an organisation, as well as its partners in an aspect that is at the core of its values. The main objective of this study is to analyse the benefits of online business registration for Congo-Brazzaville immigrant entrepreneurs in Cape Town. The study has established motivating factors to implement an e-commerce website at CFBAP in Brazzaville, but did not recommend any specific e-commerce technology for the institution. The research has also made an earnest attempt to illicit reasons why Congo-Brazzaville immigrant entrepreneurs invest in Brazzaville in spite of being well established in Cape Town. The research target population included Congo-Brazzaville immigrant entrepreneurs who were selected from their association and who live in Cape Town, where the study was conducted. The nature of the research dictated both quantitative and qualitative methodologies in order to gain a better understanding of the research problem that was identified. Key words: E-commerce, CFE, Congo-Brazzaville, World Bank, SMMEs, immigrants, Centre for Business and Administrative Procedures (CFBAP).
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Kisakye, Alex. "An investigation into information security practices implemented by Research and Educational Network of Uganda (RENU) member institution." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1004748.
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Educational institutions are known to be at the heart of complex computing systems in any region in which they exist, especially in Africa. The existence of high end computing power, often connected to the Internet and to research network grids, makes educational institutions soft targets for attackers. Attackers of such networks are normally either looking to exploit the large computing resources available for use in secondary attacks or to steal Intellectual Property (IP) from the research networks to which the institutions belong. Universities also store a lot of information about their current students and staff population as well as alumni ranging from personal to financial information. Unauthorized access to such information violates statutory requirement of the law and could grossly tarnish the institutions name not to mention cost the institution a lot of money during post-incident activities. The purpose of this study was to investigate the information security practices that have been put in place by Research and Education Network of Uganda (RENU) member institutions to safeguard institutional data and systems from both internal and external security threats. The study was conducted on six member institutions in three phases, between the months of May and July 2011 in Uganda. Phase One involved the use of a customised quantitative questionnaire tool. The tool - originally developed by information security governance task-force of EDUCAUSE - was customised for use in Uganda. Phase Two involved the use of a qualitative interview guide in a sessions between the investigator and respondents. Results show that institutions rely heavily on Information and Communication Technology (ICT) systems and services and that all institutions had already acquired more than three information systems and had acquired and implemented some of the cutting edge equipment and systems in their data centres. Further results show that institutions have established ICT departments although staff have not been trained in information security. All institutions interviewed have ICT policies although only a few have carried out policy sensitization and awareness campaigns for their staff and students.TeX
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Sukontapatipak, Songkwun. "International students' reliance on home-country related internet use." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2899.
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The present study draws on uses and gratifications and media system dependency perspectives for examining factors related to Internet usage behaviors of international students and their motives to use their home-country Internet resources.
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Chambers, Rickard. "Search engine strategies : a model to improve website visibility for SMME website /." Thesis, Click here for online access, 2005. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1079&context=td_cput.
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