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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 51 to 59 of 59 (0.069 seconds)Spelling suggestions: "subject:"escience 1echnology 2studies"" "subject:"escience 1echnology 3studies""
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Co-occurrence Matrices and their Applications in Information Science: Extending ACA to the Web EnvironmentLeydesdorff, Loet, Vaughan, Liwen January 2006 (has links)
Journal of the American Society for Information Science and Technology [JASIST] (forthcoming) / To be published in Journal of the American Society for Information Science & Technology 57(12) (2006) 1616-1628. Abstract: Co-occurrence matrices, such as co-citation, co-word, and co-link matrices, have been used widely in the information sciences. However, confusion and controversy have hindered the proper statistical analysis of this data. The underlying problem, in our opinion, involved understanding the nature of various types of matrices. This paper discusses the difference between a symmetrical co-citation matrix and an asymmetrical citation matrix as well as the appropriate statistical techniques that can be applied to each of these matrices, respectively. Similarity measures (like the Pearson correlation coefficient or the cosine) should not be applied to the symmetrical co-citation matrix, but can be applied to the asymmetrical citation matrix to derive the proximity matrix. The argument is illustrated with examples. The study then extends the application of co-occurrence matrices to the Web environment where the nature of the available data and thus data collection methods are different from those of traditional databases such as the Science Citation Index. A set of data collected with the Google Scholar search engine is analyzed using both the traditional methods of multivariate analysis and the new visualization software Pajek that is based on social network analysis and graph theory.
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Multiple Presents: How Search Engines Re-write the PastHellsten, Iina, Leydesdorff, Loet, Wouters, Paul January 2006 (has links)
New Media & Society, 8(6), 2006 (forthcoming). / To be published in New Media & Society, 8(6), 2006 (forthcoming). Abstract: Internet search engines function in a present which changes continuously. The search engines update their indices regularly, overwriting Web pages with newer ones, adding new pages to the index, and losing older ones. Some search engines can be used to search for information at the internet for specific periods of time. However, these â date stampsâ are not determined by the first occurrence of the pages in the Web, but by the last date at which a page was updated or a new page was added, and the search engineâ s crawler updated this change in the database. This has major implications for the use of search engines in scholarly research as well as theoretical implications for the conceptions of time and temporality. We examine the interplay between the different updating frequencies by using AltaVista and Google for searches at different moments of time. Both the retrieval of the results and the structure of the retrieved information erodes over time.
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Science Foresight ProjectKatz, J. Sylvan, Stewart, Sally 03 1900 (has links)
The aim of the Science Foresight Project was to design and assess a simple, objective and cost-effective technique to gather information about emerging short and long-term research developments, primarily in the physical and engineering sciences. International experts were objectively chosen using co-citation patterns in scientific and technical literature, and were invited to submit their predictions about emerging developments in their research fields. They were questioned about how the effects of various factors and driving forces might affect their predictions. The cost and time required to administer the questionnaire and collect the responses was minimised through the use of Internet and Web based technologies. A simple process was used to report the predictions; short excerpts from each prediction were used as the summary and each prediction was classified into one of ten categories of emerging developments. Authors from 114 papers (23.7%) responded, identifying a total of 190 short-term and 111 long-term predicted emerging developments. Expert responses were received from an international group of senior researchers between the ages of 36 and 55, mostly engaged in basic research in academic institutions. Some experts described specific emerging developments, some discussed broad emerging trends in their field and others described both. Emerging development categories such as Atomic & Stellar Matter, Biology & Biosphere, Biomedical & Clinical, Computers & Robotics and Genomics & Proteomics were closely aligned with conventional science areas while other categories such as Mathematical & Computational and Nano Science & Technology contained predictions from almost every area of science. The technique developed and applied here appears to constitute an efficient means of surveying the international research community in order to gain insights into common patterns that evolve from their collective research activities. Dynamically monitoring emerging research developments on a continuous basis could provide valuable information to policy makers, planners and researchers.
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Material Expertise: Applying Object-oriented Rhetoric in Marine PolicyDixon, Zachary Parke 08 July 2016 (has links)
This dissertation applies object-oriented rhetorics and posthuman philosophies to environmental policy deliberation in order to help bridge gaps between policy makers, scientists, and citizens. For environmental policy scholars the non-credentialed expertise of local, or indigenous stakeholders is valued as possessing technical, objective merit that can improve the development and implementation of environmental policies. However, the utilization of stakeholder expertise in environmental policy faces serious challenges in terms of finding common grounds for communication within complex techno-social systems, of overcoming deep cultural differences and perceptions, and grave ethical issues of access and power. This dissertation develops two case studies of marine fisheries policy debates using theories of material ontology to detail the process of how the expertise of ordinary citizens develops within the context of environmental policy and how that expertise might be better utilized.
By employing object-oriented rhetorical theories to trace material agency through the Snook and Gamefish’s (SGF) stakeholder integration programs in Florida’s Spotted Seatrout and Common Snook fishery debates, this dissertation argues that a material ontology of expertise offers a means of assessing the quality of lay-publics’ non-credentialed expertise. This dissertation suggests that an enriched since of what material objects are capable of rhetorically helps us develop tangible, actionable tools for environmental policy studies. By understanding expertise in terms of the accretion of material experiences, policy makers and scholars might more easily evaluate and utilize the expertise of environmental policy stakeholders
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When Do Researchers Collaborate: Toward a Model of Collaboration PropensityBirnholtz, Jeremy P. January 2005 (has links)
Geographically distributed and multidisciplinary collaborations have proven invaluable in answering a range of important scientific questions, such as understanding and controlling disease threats like SARS and AIDS or exploring the nature of matter in particle physics. Despite this, however, collaboration can often be problematic. There are institutional obstacles, collaboration tools may be poorly designed, and group coordination is difficult. To better design technologies to support research activities, we need an improved understanding of why scientists collaborate and how their collaborations work. To achieve this improved understanding, this study compares two theoretical approaches to collaboration propensityâ that is, the extent to which collaboration is perceived as useful by individual researchers.
On one hand, cultural comparisons of disciplines suggest that collaboration propensity will be higher in disciplinary cultures that have a more collectivist orientation, as indicated by low levels of competition for individual recognition and few concerns about secrecy related to commercialization and intellectual property. In contrast, an approach based on social and organizational psychology suggests that collaboration propensity will vary as a function of resource concentration, fieldwide focus on a well-defined set of problems, and the need for and availability of help when difficult problems are encountered in day-to-day work. To explore this question, a mail survey of 900 academic researchers in three fields was conducted, along with 100 interviews with practicing researchers at 17 sites in the field.
Results support a focus on work attributes in interpreting collaboration propensity. That is, cultural factors such as competition for individual recognition and concerns about intellectual property were not perceived as significant impediments to collaboration. Instead, characteristics like resource concentration and the need for coordination were more important in determining collaboration propensity. Implications of these findings include a call for more careful examination of the day-to-day work of scientists and engineers, and a suggestion that concerns about scientific competition impeding collaboration may be unwarranted.
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The Swedish Oil Weapon : Storage of fuel in Sweden during the Cold War – Energy security and environmentally related aspects / Det svenska oljevapnet : Lagring av bränsle i Sverige under kalla kriget – energisäkerhet och miljörelaterade aspekterNilsson, Sofi January 2022 (has links)
The thesis analyses how the system of oil and fuel storage was created, and applied in Sweden during the Cold War. The investigation focuses on the period 1938-1998 and considers the vital role of fossil fuel during a period when Sweden declared neutrality and independence. This period also includes a phase of divestment of some of the state-owned stores. The project is partly based on original research in several archives including the Swedish Geological Survey, the War Archives of Sweden, the archive of the city of Stockholm, and relevant state agencies. Fuel was a means to security of supply, and how current policies interacted, as well as the extent to which it was perceived as a vital part of the nation’s current security politics. In particular, how the storage of oil, on a large scale, demanded adjustments of the physical Scandinavian bedrock, which in turn required new technology is examined. The study follows the forthcoming of both an organisation and a new set of knowledge illustrating how the practice of storing oil, in itself an unstable fluid changing characteristics over time, created a surrounding social network. The thesis also reviews the environmental awareness and ensuing concerns relating to the stores. The oil storage created a whole range of new specialists and experts, as well as academic fields, which all converged around the storage of oil. The long-term storage required regulations and monitoring, resulting in creation of new areas of expertise both within the companies obliged to store oil, and also within relevant state agencies. In addition, supervising authorities developed, typically governmental agencies, of which one was also assigned to dismantling the stores. The thesis discusses the political climate motivating the dismantling of the stores relating to contingency planning and civil defence, tracing the discourse until today when stores are now being re-activated.
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Scientists Comment on Their Libraries: Successes, Shortcomings, and Dreams for the FutureVaughan, K.T.L., Hemminger, Bradley, Pulley, Meredith January 2008 (has links)
A survey was conducted of 969 science researchers at the University of North Carolina at Chapel Hill. This long survey concluded with three questions requesting usersâ perceptions of the strengths and weaknesses of the campus libraries, and what single improvement the libraries could make to support scientific research and education. While the scope of these questions was more limited than large-scale surveys such as LibQUAL+TM, the results largely confirmed information from a local implementation of that survey. In addition, an interactive visualization tool was developed to help with analysis of the resulting comments. A summary of the major findings, recommendations for library improvements, and overall conclusions is given.
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ICTS: A catalyst for enriching the learning process and library services in IndiaChandra, Smita, Patkar, Vivek January 2007 (has links)
The advances in ICTs have decisively changed the library and learning environment. On the one hand, ICTs have enhanced the variety and accessibility to library collections and services to break the barriers of location and time. On the other, the e-Learning has emerged as an additional medium for imparting education in many disciplines to overcome the constraint of physical capacity associated with the traditional classroom methods. For a vast developing country like India, this provides an immense opportunity to provide even higher education to remote places besides extending the library services through networking. Thanks to the recent initiatives by the public and private institutions in this direction, a few web-based instruction courses are now running in the country. This paper reviews different aspects of e-Learning and emerging learning landscapes. It further presents the
library scene and new opportunities for its participation in the e-Learning process. How these ICTs driven advances can contribute to the comprehensive learning process in India is highlighted.
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e-Research and the Ubiquitious Open Grid Digital Libraries of the FuturePatkar, Vivek, Chandra, Smita January 2006 (has links)
Libraries have traditionally facilitated each of the following elements of research: production of new knowledge, its preservation and its organization to make it accessible for use over the generations. In modern times, the library is constantly required to meet the challenges of information explosion. Assimilating resources and restructuring practices to process the large data volumes both in the print and digital form held across the globe, therefore, becomes very important. A recourse by the libraries to application of successive forms of what can be called as Digital Library Technologies (DLT) has been the imperative. The Open Archives Initiative (OAI) is one recent development that is expected to assist the libraries to partner in setting up virtual learning environment and integrating research on a near universal scale. Future extension of this concept is envisaged to be that of Grid Computing. The technologies driving the â Gridâ would let people share computing power, databases, and other on-line tools securely across institutional and geographic boundaries without sacrificing the local autonomy. Ushering an era of the ubiquitous library helping the e-research is thus on the card. This paper reviews the emerging technological changes and charts the future role for the libraries with special reference to India.
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