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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the 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.
81

Digital Reference Triage: An Investigation Using the Delphi Method into the Factors Influencing Question Routing and Assignment

Pomerantz, Jeffrey, Nicholson, Scott, Lankes, R. David January 2003 (has links)
This article describes a Delphi study conducted to determine factors that affect the process of routing and assigning reference questions received electronically by digital reference services, both to experts within the service and between services. Fifteen factors were determined, by expert consensus, to be important at the conclusion of this study. These fifteen factors are divided into three groups: 1) general factors, 2) factors in routing the question to an individual, and 3) factors when routing the question to another service. These factors were ranked in order of importance and grouped according to the recipient of the question. These fifteen factors need to be taken into account when automating the triage process. This article has laid out a methodology for investigating other digital reference processes so that those processes amenable to automation may be automated, and expertsâ talents and time may be best used.
82

Semantic Research for Digital Libraries

Chen, Hsinchun 10 1900 (has links)
Artificial Intelligence Lab, Department of MIS, University of Arizona / As applications become more pervasive, pressing, and diverse, several well-known information retrieval (IR) problems have become even more urgent. Information overload, a result of the ease of information creation and transmission via the Internet and WWW, has become more troublesome (e.g., even stockbrokers and elementary school students, heavily exposed to various WWW search engines, are versed in such IR terminology as recall and precision). Significant variations in database formats and structures, the richness of information media (text, audio, and video), and an abundance of multilingual information content also have created severe information interoperability problems -- structural interoperability, media interoperability, and multilingual interoperability.
83

Creating a Large-Scale Content-Based Airphoto Image Digital Library

Zhu, Bin, Ramsey, Marshall C., Chen, Hsinchun 01 1900 (has links)
Artificial Intelligence Lab, Department of MIS, University of Arizona / This paper describes a content-based image retrieval digital library that supports geographical image retrieval over a testbed of 800 aerial photographs, each 25 megabytes in size. In addition, this paper also introduces a methodology to evaluate the performance of the algorithms in the prototype system. The major contributions of this paper are two. 1) We suggest an approach that incorporates various image processing techniques including Gabor filters, image enhancement, and image compression, as well as information analysis technique such as self-organizing map (SOM) into an effective large-scale geographical image retrieval system. 2) We present two experiments that evaluate the performance of the Gaborfilter- extracted features along with the corresponding similarity measure against that of human perception, addressing the lack of studies in assessing the consistency between an image representation algorithm or an image categorization method and human mental model.
84

Standardization, collaboration, and federation: Merrill's Code for Classifiers

Coleman, Anita Sundaram 08 1900 (has links)
This Microsoft PowerPoint presentation of 25 slides includes several pictures and quotations about and from the "Code for Classifiers: Principles governing the consistent placing of books in a system of classification" by William Stetson Merrill. Coleman briefly explores the problems of classification presented in the Code, the model of collaboration that was used to develop the principles documented in the various editions of the Code, and how the Code can be used to develop a federated classification (classifying) model for digital library organization. The discussion also makes it clear that early American library classification was not just a "mark and park" strategy for book shelving. Librarians and library educators of the time (early 1900s) were deeply interested in bibliographic classification as a solution to the many problems of knowledge organization for information retrieval.
85

An Overview of the Subject Gateway: Materials Science

Accanoor, Kalyani January 2003 (has links)
The primary objective and functions of libraries have not changed due to computerization. Only, the tools and techniques to achieve these objectives with ease and accuracy have. In the present day the focus is on Electronic Information. Thus it is not only acquiring, sources of information but providing access to information and sharing also. With the Internet, WWW and Information explosion, identification and extraction of information resources is an essential function of all libraries and information centers. The Electronic information sources are rapidly growing and with a wide variety in form and content it takes a lot of time to get the required information. There is thus a need to organize and classify this wide spectrum of information. With this as background, the author has created a web page providing information to not only the internal sources at the Central Library, I.I.T Bombay but also links to external electronic information sources in the field Materials Science.
86

Digital Archiving of Audio Content using WINISIS and Greenstone Software: A Manual for Community Radio Managers

Rajasekharan, K., Nafala, K. M. 02 1900 (has links)
This self-instructional handbook is aimed at helping managers of community radio stations, FM radio stations, public service broadcasting agencies and any other organisations that deal with audio files in creating prototype archives of digital audio documents. In line with the needs of the community, the manual guides users in creating their proper archives with stable, free software like WINISIS, GenISIS and Greenstone. The book also mentions the URLs from where these software can be downloaded from. While free and open source software (FOSS) helps digital inclusion of citizens in developing countries by bringing within easy reach the socially useful applications, UNESCO's information processing tools help many grassroots institutions in disseminating information to local communities. Digital archive of a community radio station will be a kind of knowledge repository that contains collective wisdom of indigenous people, communities and institutions in the region. The South Asia sub-region is now at the nascent stage of community radio development, with the introduction of policy frameworks in India, Nepal and other countries. Community radio has a great development potential across the sub-region with ever increasing number of community radio stations. To maintain an archive of broadcasted contents is a legal obligation as a self-regulatory mechanism, however many stations are not equipped for doing this. Also community radio stations need to reuse and re-broadcast many of their archived contents. This publication has its genesis in the recommendations and proceedings of the UNESCO-supported two national events entitled respectively 'National Consultation on Community Radio for Practising and Potential Community Radio Operators in India' and 'National Consultation to Review Community Radio in Nepal', where community radio station managers felt the importance of archiving digital audio contents. This document can be considered as an authoritative self-instructional manual for digital archiving of multimedia contents and more specifically for community radio contents. The manual users may find it helpful in their daily work.
87

Commons-based digital libraries

Coleman, Anita Sundaram January 2006 (has links)
This is a submission to the "Interrogating the social realities of information and communications systems pre-conference workshop, ASIST AM 2006." Commons-based digital libraries (CBDL) are an emerging phenomenon â they are digital libraries based on notions of common pool resource management. Developing a CBDL framework will provide a sustainable and equitable vision for digital information management and use. The commons-based digital library is first defined followed by the essential aspects of the framework. The metaphorical meanings and theories of libraries, repositories, and the commons are not included. Interested researchers are encouraged to contact the author. Acknowledgments: Thanks to Blaise Cronin for very helpful comments on a very early draft. Thanks to the faculty at SLIS, Indiana University - they helped me develop some of these ideas by asking lots of hard questions. Thanks also to Heather Morrison for helping me flesh out the definition.
88

Modeling System Reliability For Digital Preservation: Model Modification and Four-Copy Model Study

Han, Yan, Chan, Chi Pak January 2008 (has links)
Research has been studied to evaluate the reliability of storage media and the reliability of a computer backup system. In this paper, we use the Continuous Time Markov Chain to model and analyze the reliability of a computer backup system. We propose a modified model from that of the Constantopoulos, Doerr and Petraki [1]. We analyze the difference, show computational results, and propose new input parameters (e.g. time to repair) for the model from our experience. Further we developed a four-copy data model to test if it fulfills the sample reliability rate set by the RLG-NARA. The modeling process can be applied to construct models for computer preservation systems using different storage media. The reliability of constructed models can be calculated so that preservation institutions can have quantitative data to decide their preservation strategies.
89

Controlling Access to and Use of Online Cultural Collections: A Survey of U.S. Archives, Libraries and Museums for IMLS DRAFT VERSION 4/7/2009

Eschenfelder, Kristin R. 04 1900 (has links)
This version of the report contains a hyperlinked table of contents to improve navigation. / This report describes the results of an Institute of Museum and Library Services (IMLS) funded study to investigate the use of technological or policy tools to control patron access to or use of digital collections of cultural materials created by U.S. archives, libraries and museums. The technological and policy tools serve primarily to control copying or other reuses of digital materials. The study had the following goals: 1. Assess what technical and policy tools cultural institutions are employing to control access to and use of online digital collections. 2. Investigate motivations for controlling access to or use of collections (e.g., copyright, privacy, protecting traditional restrictions, income generation etc.). 3. Investigate discouragers to the implementation of access and use control systems (e.g., preference for open collections, lack of resources, institutional mission, etc.). 4. Gauge interest in implementing technical systems to control access to and use of collections. 5. Determine what types of assistance IMLS could provide. 6. Identify institutions with innovative controlled online collections for follow up case studies on policy, technical and managerial details.
90

A study of indexing in digitized news archives of Chinese newspapers in Taiwan

Yuan, Ming-Shu, Lin, Chih-Feng January 2006 (has links)
Many digital news archive systems in Taiwan are based on format description, not subject indexing. This requires users to know their background or the terminologies used, in order to retrieve information from these archives. This paper discusses how the original elements were indexed from various perspectives in Chinese digitized news archives. It also makes recommendations to improve the industry, including strengthening the process, connection, and description of news contents, organization, and management. This will enable cross-system retrieval and in-depth resource integration among systems.

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