Numerous networks as, for example, road networks, electrical networks and communication networks can be modeled by a graph. Many attempts have been made to determine how well such a network is "connected" or stated differently how much effort is required to break down communication in the system between at least some nodes. Two well-known measures that indicate how "reliable" a graph is are the...

INRECENT YEARS, as use of national computer networks has expanded, certain list server groups have begun to emerge as electronic journals. This article provides an overview of the electronic journal as a phenomenon in scholarly communication within the humanitiesa description of the journals that are currently available, a broad examination of the issues they raise for libraries, and some possi...

As computer networks improve, more social and work interactions are carried out “virtually” by geographically separated group members. In this paper we discuss the design of a tool, PAVE, to support remote work interactions among colleagues in different time zones. PAVE extends a 2D graphical MOO and supports synchronous and asynchronous interactions. PAVE logs and indexes activities in the spa...

Integration of advanced telephone technologies, computer communication networks, data base technology, and electronically assisted detection of objects is studied in the paper. The developed solution offers several promising applications.

Users of mobile computers will soon have online access to a large number of databases via wireless networks. Because of limited bandwidth, wireless communication is more expensive than wire communication. In this paper we present and analyze various static and dynamic data allocation methods. The objective is to optimize the communication cost between a mobile computer and the stationary comput...

Locality of reference is an important aspect of many computer operations. It is often exploited to optimize the performance of computer functions. In this paper, we apply the locality concept to the communication patterns of parallel programs operating over an interconnection network with a fixed communication latency between any pair of attached nodes. Unbuffered multistage networks and all-op...

Mobile nodes that change their connection point dynamically, are deployed in networks for communication with aircraft, boats, trains and cars. These mobile nodes move together and share the same mobility properties. This paper addresses an efficient location management scheme based on collaboration of mobile nodes to a mobile network. In our proposed scheme, we address the efficient location ma...

Today there is a great concern among businesses and individuals about privacy and security while using computers and the Internet. The two topics, privacy and security, are closely related in the computer-industry and on the Internet and there are many questions that overlap each other. Secure communication is in many cases a requirement assuring privacy and security for businesses and individu...

This study investigated the effectiveness of explicit pragmatic instruction on the acquisition of requests by college-level English as Foreign Language (EFL) learners in Taiwan. The goal was to determine first whether the use of explicit pragmatic instruction had a positive effect on EFL learners’ pragmatic competence. Second, the relative effectiveness of presenting pragmatics through two deli...