Current Web image search engines, such as Google or Bing Images, adopt a hybrid search approach in which a text-based query (e.g. "apple") is used to retrieve a set of relevant images, which are then refined by the user (e.g. by re-ranking the retrieved images based on similarity to a selected example). This approach makes it possible to use both text information (e.g. the initial query) and image features (e.g. as part of the refinement stage) to identify images which are relevant to the user. One limitation of these current systems is that text and image features are treated as independent components and are often used in a decoupled manner. This work proposes to develop an integrated hybrid search method which leverages the synergies between text and image features. Recently, there has been tremendous progress in the computer vision community in learning models of visual concepts from collections of example images. While impressive performance has been achieved on standardized data sets, scaling these methods so that they are capable of working at web scale remains a significant challenge. This work will develop approaches to visual modeling that can be scaled to address the task of retrieving billions of images on the Web. Specifically, we propose to address two research issues related to integrated text- and image-based retrieval. First, we will explore whether models of visual concepts which are learned from collections of web images can be utilized to improve the image ranking associated with a text-based query. Second, we will investigate the hypothesis that the click-patterns associated with standard web image search engines can be utilized to learn query-specific image similarity measures that support improved query-refinement performance. We will evaluate our research by constructing a prototype integrated hybrid retrieval system based on the data from 300K real-world image queries. We will conduct user-studies to evaluate the effectiveness of our learned similarity measures and quantify the benefit of our method in real world search tasks such as target search.

There has been a huge increase in the costs of the journal collection at the University of Natal, Durban Libraries. This is due to the increased foreign exchange rate compounded by the frequent increase in the price of journal subscriptions. The library budget has not been able to keep pace with these increases in materials. The consequence is the cancellation of journal subscriptions together with the erosion of new book purchasing. To cope with this situation, libraries are coming to measure their collections and looking at alternative ways to overcome this journal crisis. The development of the technology of computers has greatly widened access to information but still at a cost in money and specialized skills much higher than is required for access to the traditional media. With the technology, the user can access the information or journal from anywhere not necessarily in the library but from home as well as the office. The patron can access various information sources from one point. For this study a multi-pronged method was employed. The methods employed were a literature review, a review of the documentary sources, an analysis of the journal data, surveys by self-administered questionnaires to the users – postgraduate students and academic staff in the Faculty of Science and an interview with the Acting University Librarian, Ms Nora Buchanan. One important element of the survey was to obtain in-depth information on journal usage patterns. The study was interested in determining whether the shift from print to electronic would affect journal usage patterns and dependence on the physical library. The findings of the survey demonstrated that usage patterns have changed and now favour the use of e-journals. There are, however, certain advantages to both formats and it is important to take advantage of both. The University Librarian interviewed recognized the popularity of e-journals and saw that over time the journal collections will shift from print to electronic. The archiving of online content remains a concern and print is still regarded as a short-term answer to the archive problem. The analysis of the journal data revealed that print and e-journal prices increased substantially each year, with the exception of 2004, for various reasons. But the print journals increased much more than the e-journals. The findings of this study could be drawn on to inform policy and practice regarding journal acquisition at the Howard College Libraries, University of KwaZulu-Natal and possibly other libraries as well. / Thesis (M.I.S.)-University of KwaZulu-Natal, Pietermaritzburg, 2004.

This research was a case study that investigated predictors of users’ preferences for digital information at the Oceanographic Research Institute (ORI) Library in Durban, South Africa. The objectives of the study were to determine the predictors of users’ preferences for digital information, examine user attitude towards use of digital information, evaluate user competencies in the use of digital information, examine available ICT infrastructure to facilitate access to digital information and assess usage patterns of electronic resources. Technology Acceptance Model (TAM) was used to underpin the study, using the mixed method paradigm consisting of qualitative and quantitative methods. A census of the study population, consisting of 26 respondents, was taken. Data was collected using focus group discussions, semi-structured interviews, participant observations, document reviews and survey questionnaires. Quantitative data was analysed using descriptive statistics, while qualitative data was analysed thematically. The findings of the study indicated that there was increasing preference of digital information to print by scholars. Moreover, usage of digital information was high by virtue of being easy to use and useful for scholarly work. The findings revealed that scholars had developed a positive attitude towards digital information. In addition, user experience with computers and the availability of infrastructure within the organisation were found to be facilitating conditions for digital information usage behaviour. The findings showed that respondents lacked relevant skills for the effective use of digital information and the ORI Library lacked adequate computers and electronic resources to satisfy user needs. The study recommended the development of a digital repository, user training to improve use of digital information resources. Suggested areas for research included examining the use of electronic resources in marine and aquatic institutions in Africa to establish grounds for collaborations and resource sharing. A study to assess the quality of research output by scholars was also recommended, as a way of exposing the critical or non-critical use of digital sources. / Thesis (M.I.S.)-University of KwaZulu-Natal, Pietermaritzburg, 2013.

This study explores the use of electronic information services (EIS) by students at the Howard College (HC) campus of the University of KwaZulu-Natal (UKZN) in the faculties of Engineering and the Humanities, Development and Social Sciences (HDSS). The objectives were to establish usage among students; identify determinants of usage and to make recommendations. To achieve these objectives, the study concentrated on answering these research questions: • Do UKZN students use library e-resources? • Which e-resources are UKZN students using? • Where do UKZN students access library e-resources? • Why do UKZN students use library e-resources? • What characterises non-users of library e-resources? • What barriers exist to the use of electronic information services (EIS)? A review of the literature identified a mix of quantitative, qualitative and combined methods used to investigate EIS usage. In various research studies, the variables considered to be determinants of use included age, status, discipline of study, subject content, computer proficiency, ease of use, availability and print formats in academic environments. The barriers experienced when using EIS formats, the adoption of technology and the usability characteristics of EIS were also important aspects evident in the literature. The methodology adopted was based on a pragmatic philosophical approach and sought to establish baseline data. A quantitative research design was used which set out to achieve the research objectives through data collection on two fronts. Firstly, the overall usage environment at UKZN was established by reviewing vendor usage statistics. The COUNTER compliant statistics for selected databases and e-journals were collected and analysed. As COUNTER statistics were not available for e-books, the statistics available from the vendors were used. Secondly, a stratified, random sample of students on the HC campus was surveyed by means of an online questionnaire. A response rate of 22.5% was achieved. Data collected established the characteristics of users; whether they made use of e-books, e-journals and databases; where they used them and how often; why they made use of them; and what barriers and problems they experienced when using them. Data from non-users was also solicited. Data is presented in graphs and frequency tables. The Chi-square test was applied to establish significant associations between variables and these results are produced in contingency tables. The findings established that EIS are used by students and usage fluctuates during the course of the academic year with peaks occurring in each semester and low points during the vacation periods. e-Journals and databases are used more than ebooks, while postgraduate students use EIS most. Non-users made up almost a third iv of the sample; while habitual, frequent and infrequent users were reflected in almost equal numbers among those who use EIS. Age, gender or discipline of study were not in evidence as determinants of use. Students undertake searches mainly from computers in the LANs but off-campus computers are also used, which highlights the importance of remote access. The library website is most often the starting point for navigation, although search engines are also popular as a virtual starting point. Locating information was the prime motivation to use EIS, and students largely rated the EIS they used as good or excellent. Barriers were experienced by as many as 37% of users who reported that the non-availability of EIS was the main problem, although they experienced other difficulties. In concluding, issues of library service delivery and recommendations regarding usage are made. / Thesis (M.A.)-University of KwaZulu-Natal, Durban, 2010.

This thesis presents an empirical investigation of the problems of including pictorial digital art in the context of Digital Libraries (DLs). The rational for this work is that digital art material is a significant source of learning and research, provided that it is systematically collected and maintained in structured electronic repositories. The thesis addresses a fundamental question: How to provide description and retrieval services, which are based on the needs of digital art user communities? This raises three research issues. One is the need to combine DL collections into meaningful and functional content. The second is the importance of a user-oriented approach to designing and developing Digital Libraries. The third is the requirement for continuing access to digital art as a record of modern culture. These questions are explored through a needs assessment targeted to Arts & Humanities scholars, digital artists and representatives of the DL community. A data collection methodology is developed, based on the principles of Social Informatics and a case study of evaluation efforts in extant projects. The results from this process demonstrate that the scholarly value of digital art can be established by aggregating material from various repositories into a unified dataset. The results also identify specific documentation and retrieval issues deriving from inclusion of digital art in a DL environment that necessitate further investigation. To this end, a review of sixteen digital art online resources is conducted which reveals ad-hoc collection strategies and metadata deficiencies. The work presents a prototype Digital Library for enhancing the educational outcome of digital art. The application is used as an implementation platform for material aggregation and augmented documentation through the Media Art Notation System (MANS). The summative evaluation findings confirm that the suggested solutions are highly rated by the targeted audiences. The thesis makes a contribution to academic knowledge in situating the representation of digital art within modern society. By critically examining the unique requirements of this material using the resources of social theory, the thesis represents a contemporary and pragmatic perspective on digital media art. In a well-structured Digital Library, the scholarly potential of digital art is much greater than the currently employed ad-hoc context. This work offers a sustained reflection and a roadmap for selecting and consistently applying a strategy that aims to continually improve the quality of digital art provision.

The purpose of this study was to examine the management of electronic information resources (EIRs) to enhance their long-term links preservation and access in the University of KwaZulu-Natal Pietermaritzburg (PMB) and Howard College campus libraries. The study investigated the strategies and policies used in managing EIRs, how the librarians overcome technological obsolescence, the information and communication technology (ICT) infrastructures used in the management of the EIRs and the competency of the librarians in electronic preservation. The significance of this study lay in its addressing of the issue of long-term links preservation of and access to EIRs that has not been addressed by previous studies. There is rapid growth in the creation and dissemination of EIRs which has emphasized the digital environment’s speed and ease of dissemination with little regard for its long-term preservation and access. The study population was 33 and it comprised the subject librarians, metadata librarians and electronic resources librarian of PMB and Howard College campus libraries of the University of KwaZulu-Natal. Adopting a quantitative approach the research design was that of a survey and the research instrument was a self-administered questionnaire comprising both open and closed questions. A total of 28 librarians responded to the questionnaire giving a response rate of 84.8%. Data was analyzed using SPSS. Results were presented in the form of figures and tables. The study was underpinned by the Open Archival Information System (OAIS) Reference Model, which is being used widelyin the digital preservation community. The analysis of the findings revealed that there was an intermediate level of ICT knowledge and skill with regard to management of EIRs amongst the respondents and a need for training in EIRs management particularly with regards to metadata, migration, emulation, maintenances and bit preservation techniques.It was also revealed that the libraries were using the server’s hard drive to store the EIRs. The results also showed that there were an arguably high number of respondents ten (35.7%) who indicated that their libraries did not have anEIRs management policy. For those respondents who said that their libraries do have a policy, the vast majority indicated that the policy did provide guidelines for acquiring materials in electronic form and for transforming materials from print to electronic form. Recommendations emerging from the conclusion were made and suggestions for further research put forward. / Thesis (M.I.S.)-University of KwaZulu-Natal, Pietermaritzburg, 2013.

Electronic availability of information resources has increasingly become an important part of academic libraries everyday vocation. This is a fact that puts impetus on the libraries to know more about the way in which electronic information is being dispersed and handled. This thesis aims to comparatively evaluate Uppsala university library´s own metadata system Summon with the publicly available equivalent Google scholar. The evaluation is based on Péter Jacsó´s theories on database evaluation which concretely puts focus on Summon and Google scholar via the use and application of ten different criteria. The uses of precision and relevance criteria were also implemented as additional evaluation tools. The results indicate that Google scholar at the moment has to be seen as a necessary complement in retrieving electronic information due to the fact that Summon is not yet fully functioning on all levels. This is a two years master’s thesis in Archive, Library and Museum studies.

The ability to maintain continuous access to digital documents and artifacts is one of the most significant problems facing the archival, manuscript repository, and record management communities in the twenty-first century. This problem with access is particularly troublesome in the case of complex digital installments, which resist simple migration and emulation strategies. The Legacy Project, which was produced by the William Breman Jewish Heritage Museum in Atlanta, was created in the early 2000s as a means of telling the stories of Holocaust survivors who settled in metropolitan Atlanta. Legacy was an interactive multimedia kiosk that enabled museum visitors to read accounts, watch digital video, and examine photographs about these survivors. However, several years after Legacy was completed, it became inoperable, due to technological obsolescence. By using Legacy as a case study, I examine how institutions can preserve access to complex digital artifacts and how they can rescue digital information that is in danger of being lost.

Thesis (Ph. D.)--State University of New York at Binghamton, Computer Science Department, 2006. / Includes bibliographical references.

Thesis (D. Ed. Min.)--Midwestern Baptist Theological Seminary, 2006. / Includes bibliographical references (leaves 328-336).