Expands on existing concepts and notions regarding hypertext-based information retrieval. Topics include document characterization; characterization networks; query by navigation; navigation networks; and adding new links to the characterization networks with information about semantic relations. (LRW)

Introduces social network analysis as an approach and set of techniques for the study of information exchange. Social network analysis differs from other analysis techniques by focusing on patterns of resource exchange relationships and by emphasizing empirical observation. Measurement techniques used in social network analysis are described.…

Discusses network denial-of-service attacks which have become a security threat to the Internet community and suggests the need for reliable authentication protocols in client-server applications. Presents a public-key based authentication and key establishment protocol coupled with a client puzzle protocol and validates it through formal logic…

Discussion of the Internet 2 Initiative, which is based on collaboration among universities, businesses, and government, focuses on the Access Grid, a Computational Grid that includes interactive multimedia within high-speed networks to provide resources to enable remote collaboration among the research community. (Author/LRW)

Describes the development of a task-based framework for providing learning within the workplace using networked multimedia. Builds on the recognition that tasks must reflect the social process of learning as considered by Vygotsky and takes into account the role of dialogue in the building of knowledge for an individual and for a group.…

Bruner, Goodnow, and Austin's (1956) research on concept development is reexamined from a connectionist perspective. A neural network was constructed which associates positive and negative instances of a concept with corresponding attribute values. Results suggest the simultaneous learning of attributes guided the network in constructing a faster…

Defines the term rumor/grapevine; discusses reasons for grapevine; and explores the accuracy of grapevine, type of grapevine, how grapevine is spread, role of participants, and managing the grapevine. Indicates that those who understand its power will be able to use it to provide the stability and credibility in the work environment to achieve…

Discusses six factors to consider when getting onto a computer network: (1) evaluate each situation; (2) contact each network; (3) develop a financial plan; (4) investigate the school's phone system; (5) get other advisers' opinions; and (6) plan how the network will be used. (MS)

Building on Nagel's theory of social structure, this paper argues that the microsocial dynamics occasioned by new technologies systematically reverberate up levels of analysis. This theory is illustrated by ethnographic and sociometric data drawn from a study comparing usage of traditional and computerized imaging devices in two radiology…

Provides information on commercial connections to the Internet via gateways as opposed to direct connection or through a modem. Hardware and software requirements are described; and commercial online services offering an Internet gateway are discussed, including America Online, CompuServe, Delphi, GEnie, and Prodigy. (LRW)

Discussion of Internet Gopher databases highlights the Gopher developed for AECT (Association for Educational Communications and Technology). Highlights include access information; guide to the AECT Gopher; access statistics, including international contacts; and future plans. (LRW)

Loss of funding for NSFNet and the likelihood of deregulation may lead to endusers paying for operation of the national telecommunications infrastructure and decreased levels of service. Sources for additional funding include increased fees to information providers/third-party access resellers; increased fees to user institutions; and grant or…

Examines the match between multimedia data and local area network (LAN) infrastructures. Highlights include applications for networked multimedia, i.e., asymmetric and symmetric; alternate LAN technology, including stream management software, Ethernet, FDDI (Fiber Distributed Data Interface), and ATM (Asynchronous Transfer Mode); WAN (Wide Area…

Reviews four key Internet sites that offer environmental health research data, grant programs, environmental education resources, networking, and other environmental information. Provides addresses and brief descriptions of the resources. Discusses methods for making queries. (LZ)

Identifies key network indicators that enable the provider of telecommunications service to track and monitor daily network performance and its impact on network users. Network response time, including host- and device-based conditions, circuit and hardware conditions, and CRC (cyclic redundancy check)/link errors; indicator measurements and…