Describes the design, implementation, and preliminary evaluation of three synchronous distributed learning prototype systems: Co-Working System, Working Along System, and Hybrid System. Each supports a particular style of interaction, referred to a socio-activity learning model, between members of student dyads (pairs). All systems were…

Discusses individual differences between users of information systems that can influence search performance, and describes two experiments that addressed user-centered design of information systems. Highlights include interaction between cognitive abilities and design features; compensation and capitalization perspectives; recall and precision;…

Describes an approach outlined by sciences and engineering librarians at the University of California, Santa Barbara to attract users--specifically graduate students and faculty--to the available online databases and services. The strategy focused on the essentials of planning, preparation and publicity, presentation, and post-workshop evaluation.…

Describes the workings of computerized adaptive testing (CAT). Focuses on the key concept of information and then discusses two important components of a CAT system: the calibrated item bank and the testing algorithm. Describes a CAT that was designed for making placement decisions on the basis of two typical test administrations and notes the…

Focuses on the design, development, and maintenance of Web-based resource sites developed for specific target audiences. The case study described is a site developed to support Web-based instruction in both corporate and educational settings; however the principles are also applicable for Web resource sites developed for many other content areas.…

Various methods for retrieving chemical structure information on the World Wide Web are discussed. Although graphical plug-in programs provide more search capabilities, users first have to obtain a copy of the programs. Tripos's WebSketch and ACD Interactive Lab adopt a different approach; using JAVA applets, users create and display a structure…

Predicts the effects of information technology (IT) on libraries of the future. Discusses negative implications for school libraries. Describes four emerging roles for media specialists: (1) showing students and staff how to navigate information networks; (2) teaching users how to evaluate and select information; (3) designing information systems;…

Proposes a useful concept of relevance as a relationship and an effect on the movement of a user through the iterative stages of their information seeking process, and that users' relevance judgments can be plotted on a Three-Dimensional Spatial Model of Relevance Level, Degree and Time. Discusses implications for the development of information…

Proposes a user-centered framework for intranet design based on an understanding of people, their typical problems, information behaviors, and situated contexts. Argues that by adopting such an approach, intranets can be designed which facilitate organizational information access and use. (Author/AEF)

Discusses the research design for an educational evaluation of the Alexandria Digital Earth ProtoType (ADEPT), a digital library of geo-referenced information resources. Reviews the deployment of digital libraries in educational settings, the role of information technology in developing students' scientific thinking, and evaluation of digital…

Examines expectations about a computerized student management-information system (SMIS) and how these perceptions influence effective use. Investigates relationships between design, use and effects in developing a model for understanding strategies for effective implementation and use. Focuses on a public school district in Texas. (AEF)

Presents an overview of "Q&A," a Web-based question-answering system that mediates interactions between an expert and a question-asking user. Discusses the system's components and features; details of the implementation; evaluation; and future work. (AEF)

Focuses on instructional and learning systems in distance education. Highlights include: learner-centeredness of distance education; instructor's role; relevant content to individual needs; balancing roles of instructors and learners; personalizing instruction; ramifications for instructional and learning system design; and architecture of dynamic…

Describes a scalable system for searching heterogeneous multilingual collections on the World Wide Web. Details Searchable Database Markup Language (SearchDB-ML) for describing the characteristics of a search engine and its interface, and a protocol for requesting word translations between languages. (Author)

Describes a security architecture, Oasis, which runs on a middleware platform extended for asynchronous operation; shows how the interoperation of independently developed services may be supported under the Oasis architecture. Uses the provision of digital academic library services as an example. (Author/AEF)