The Mini-Computer is compared with the general purpose computer. On a performance basis the Mini-Computer shows several interesting comparisons with the System 360 computer. The Mini-Computer core cycle, instruction execution speeds, and disc operating speeds are quite similar to the much larger 360-30 and 40 while its magnetic tape speeds are…

Describes how Danbury, Connecticut justified its computer costs by consolidating school and city accounting functions. (JF)

Defines a hash coding model for non-unique search keys and derives the expected number of accesses needed to retrieve all desired records from a computer storage device. (Author)

HELP--a question-answering system--enables a user, sitting at the console of a time-shared computer, to obtain information on questions typed in. This information might concern the operating system itself, the format of commands to the user interface executive program, the use of a selected subsystem, or an area totally separate from the computer.…

GENERAL CONSIDERATIONS INVOLVED IN THE DESIGN OF FILE ORGANIZATIONS FOR INFORMATION RETRIEVAL SYSTEMS ARE DISCUSSED. THE QUESTION OF INVERTED FILE AND SERIAL FILE SEARCHING ON MAGNETIC TAPE IS REVIEWED. BASED ON FORMULAS CONCERNING INDEX TERM USAGE, IT IS SHOWN FOR A SPECIFIC COLLECTION THAT SEARCHING THE SERIAL FILE IS MORE EFFICIENT THAN…

The paper descibes a compact and highly efficient disk file management system responsible for the management and allocation of space on moving head disk drives in a medium-scale time-sharing system. The disk file management system is a major component of the Experimental Time-Sharing System (ETSS) developed at the Learning Research and Development…

An existing computer program for computing multiple regression analyses is made interactive in order to alleviate core storage requirements. Also, some improvements in the graphics aspects of the program are included. (JKS)

Describes the components and the capabilities of nine minicomputers and how they are capable of serving as a terminal with remote IBM 360 or 370 computers. (MLF)

Describes how Ohio University devised computer forms that would coordinate the requirements of the university, minimize the problems of students in completing the forms, and meet the specifications of its data processing equipment. (JF)

The invention involves a device with learning capacity which contains input, storage, arithmetic and output units. In order to increase the number of recognizable patterns, facilitate replacement of one pattern by another, and also increase the speed of the device, the memory unit for the input field is connected to memory units for storage of…

Examines the present and future capabilities of microcomputers for personal use, and discusses the requirements for such individualized systems, including software and hardware considerations. A glossary is provided, and 31 references are cited. (FM)

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 Draft Report of the Joint Ad Hoc Subcommittee on Regional Computing Centres of the Committee of Presidents of Universities of Ontario made a tentative recommendation that a regional computer center should be developed for the use of Ontario universities. However, on further investigation it was found that such a computer center would be…

Describes a dialog-program which uses basic statements available on a WANG 2200T version connected to a floppy-diskette to cross-reference a given set of keywords, author names, journal names, and specified reference numbers. Special program features are described and two references are listed. (Author/RBF)

Describes a method for organizing, storing, and retrieving lexical data from computerized files of American Sign Language. The results of sample searches of the dictionary files are presented with a discussion of how these files and applications might be expanded. The lexicon is useful for researchers and teachers of sign languages. (Author/PJM)