How do you dynamically customize the programming language available in a context within an existing system, without changing the underlying system? This dissertation introduces a language design approach that addresses this problem. The basic idea is to structure programs as systems of multiple interacting levels of abstraction, where all of the…

Introduction: Website accessibility is a problem that affects millions of people with disabilities. While most current accessibility initiatives target government or commercial sites, a growing segment of online content is being created by non-professionals. This content is often inaccessible to users with disabilities. Everyday inclusive Web…

This introduction to microcomputers and their implementation and use in federal agencies discusses both basic concepts in microcomputers and their specific uses by clerical, administrative, professional, and technical federal personnel. Issues concerned with the use of specialized application software and integrated packages--word processing, data…

Presents a formal model for specification of logical requirements of computer-based information systems that incorporates structural and dynamic aspects based on two separate models: the Logical Information Processing Structure and the Logical Information Processing Network. The model's role in systems development is discussed. (MBR)

The purpose of this study was to investigate the extent to which a sophisticated computer assisted instruction (CAI) system could be implemented on the type of microcomputer system currently found in the schools. A method was devised for comparing CAI languages and was used to rank five common CAI languages. The highest ranked language, NATAL,…

The development and evaluation of a potential viewdata-style delivery system for computer assisted learning (CAL) at the Open University are described. First examined are Open University problems with CAL and television delivery systems, which resulted in the consideration of a viewdata approach involving allocation of a small central processor to…

This sixth article in a series discusses planning for the installation and implementation of automated systems in the library, workstation design and location, scheduling of software implementation, security, data input, staff and reader training, job design, impact of automation on library procedures, evaluation of system performance, and future…

Discusses what designers do, information they need, and how they might be aided, as background information for developing useful computer-aided decision systems to enhance designers' productivity. It is concluded that effectiveness of computer-assisted design systems depends on the value of the information and the flexibility of the support they…

Discusses design, development, and use of a database to provide organization and access to a computer software collection at the University of Hawaii School of Library Studies. Field specifications, samples of report forms, and a description of the physical organization of the software collection are included. (MBR)

This study investigated the effects of manipulating design features of a computer-mediated text system, using 45 hearing-impaired subjects in grades four-six. A system design using motivational activities facilitated vocabulary knowledge and writing performance. Also analyzed were use of extrinsic motivational activities versus intrinsic, and…

The Defense Department Scientific and Technical Information (STI) network is composed of over 200 technical libraries and information centers tied together by the Defense Technical Information Center (DTIC), an organization which seeks to improve the flow of information throughout the STI network by promoting shared cataloging and integrated…