The subject of access control mechanisms in computer systems is concerned with effective means to protect the anonymity of private information on the one hand, and to regulate the access to shareable information on the other hand. Effective means for access control may be considered on three levels: memory, process and logical. This report is a…

The availability of low-cost minicomputers in the last few years has opened up many new control and special purpose applications for computers. However, using general purpose computers for these specialized applications often leads to inefficiencies in programing and operation. GRI Computer Corporation has developed a common-sense approach called…

The development and function of microprocessors are discussed and the associated implications for computers in education are presented. (MP)

Describes the advantages of optical data disk-based storage systems including cost, performance, and space required. Conversion from tape-based to optical disk-based data management via a flexible, hardware-based optical archiving system is discussed. (Author/LRW)

Explores the new storage technology of optical data disks and introduces a data structure, the inverted signature tree, for storing data on optical data disks for efficient text searching. The inverted signature tree approach is compared to the use of text signatures and the B+ tree. (22 references) (Author/CLB)

Investigates applicability of inverted file processing in magnetic bubble memories by presenting four magnetic bubble memory models as storage mediums: one based on a major-minor loop configuration; one utilizing a decoder design on a magnetic bubble memory chip; and two based on different structural configurations of the first two. (MBR)

The mini-computer is found to be a viable alternative to large computer bio-medical information processing. (Author/RS)

Holography is one of the most promising methods now under research for the achievement of high bulk storage with fast random access at a reasonable cost. (Author)

A wide range of computer crimes and the need for computer security are discussed. (MK)

To help the librarian in negotiating with vendors of automated library services, nine authors have presented methods of dealing with a specific service or situation. Paper topics include computer services, network contracts, innovative service, data processing, automated circulation, a turn-key system, data base sharing, online data base services,…

The Inverted File Information Retrieval System (INFIRS), is a document search system which offers a comprehensive range of search facilities. It has been developed at the United Kingdom Chemical Information Service (UKCIS) as a general purpose retrieval tool, suitable for handling a wide variety of data-bases (both free-text and controlled…

This study sought to design an effective management information system for an Illinois community college. It was developed by (1) displaying all the college activities as a system with six functionally independent subsystems, (2) reducing subsystem data to basic elements, (3) analyzing administrator response to choice of data items, (4)…

The second edition of the directory presents information about the computer services provided to outside customers by commercial concerns, service bureaus, consultants, and educational and research establishments throughout the world. It lists the names, addresses, telephone numbers, and principal officers of institutions and companies, together…

Both accidental and intentional events may compromise the security of an electronic data processing system. Ways of assessing security needs are surveyed, and measures that can be taken to prevent, detect, and recover from security breaches are described. (Author/LBH)

Provides an introduction to the technical aspects of digital audiotape and compares it to other computer storage devices such as optical data disks and magnetic tape cartridges in terms of capacity, transfer rate, and cost. The current development of digital audiotape standards is also discussed. (five references) (CLB)