The back-end databases of multi-tiered applications are a major data security concern for enterprises. The abundance of these systems and the emergence of new and different threats require multiple and overlapping security mechanisms. Therefore, providing multiple and diverse database intrusion detection and prevention systems (IDPS) is a critical…

Improvements in Information Technology (IT) infrastructure and standardization of interoperability standards among heterogeneous Information System (IS) applications have brought a paradigm shift in the way an IS application could be used and delivered. Not only an IS application can be built using standardized component but also parts of it can…

This document contains reports examining research designs for Educational Resources Information Center (ERIC) usage studies at three levels: (1) system operations; (2) subscribers to the services provided; and (3) the ultimate "end-users" of the service. The first level report, which addresses ERIC as an information network, proposes two…

This paper provides a portrayal of Z39.50 (a communications protocol that enables two systems to exchange messages for the purpose of information retrieval) that explains its flexibility in response to a variety of information retrieval requirements in the networked environment. The first section presents an overview of Z39.50, including the…

Discussion of standards and protocols (set of rules by which two computers or other electronic devices can exchange data for same purpose) highlights history of standards and their interaction with the design and evolution of real computer networks. Topics noted include reference models; conformance, compatibility, and interoperability; and…

Discusses the need for standards allowing computer-to-computer communication and gives examples of technical issues. The seven-layer framework of the Open Systems Interconnection (OSI) Reference Model is explained and illustrated. Sidebars feature public data networks and Recommendation X.25, OSI standards, OSI layer functions, and a glossary.…

A model of a generalized information storage and retrieval system is proposed. The model consists of six subsystems (or blocks): logical processor, selector, descriptor, file, locator, document file, and analysis block. These subsystems function in a partial environment defined by the user and data blocks. Proceeding from a verbal description, a…

A hypothetical model is given for a National Serials Data System based on the best educated guesses of what the system should do and how, therefore, it should function. The model focuses attention on the ultimate goal rather than on the decision-making processes relating to choice of data elements, unique identification codes, etc. This conceptual…

Discusses a reliability theoretic construct focusing on information produced to satisfy specified purposes or achieve preconceived objectives. When measures of system reliability and sensitivity analyses are performed, the result is a closer congruence between the objectives of the data producer and user requirements. (Author/MBR)

Recommends that Medical School libraries be equipped to organize and provide biomedical information services in their respective states or areas, as a basis for the development of a national library-based biomedical information network to support Nigeria's programs of medical education, research, and health care delivery at all levels. (VT)

Article focuses on the communication aspects of two types of information systems: computer assisted instruction (CAI), and computer based systems for information retrieval. (Author/RK)

In order to further develop West German information services for education, it is suggested that the ERIC structural model--a coordinating central office and a network of clearinghouses--be developed as a continuation of the existing "Dokumentationsring Padagogik" (DOPAED) documentation service. (16 references) (EJS)

A compact atlas--"Information Highways: Mapping Information Delivery Networks in the Pacific Northwest"--provides a model for assimilating large volumes of information dealing with generic topics. It combines data and information blocks with information technology graphics blocks and maps showing the actual locations of information…

A model of a student vital statistics and delivery system is proposed to enhance the effectiveness of student services and institutional accountability. This model incorporates guidelines for its planning, organization, development, implementation, and evaluation. Implications for admissions, programming, instruction, research, and alumni…