The efficacy of online learning programs is tied to the suitability of the program in relation to the target audience. Based on the dataset that provides information on student enrollment, academic performance, and demographics extracted from a data warehouse of a large Southwest institution, this study explored the factors that could distinguish…

A model which relates the access control and indexing functions. The model is based on concept protection which allows a practically unbounded number of levels (subsets) of protection without requiring a fixed hierarchy among the levels. This protection is offered independently for each of the user operations allowed. (Author)

The problems examined during this investigation consisted of the development of data acquisition and instructional systems, (1) to collect reliable data to assess the management system's actual performance and its acceptability by trainees, (2) to manage a variety of available resources, (3) to schedule trainees' activities, and (4) to monitor…

Articles in this issue of "Global Journal of Computer Science and Technology" include: (1) Input Data Processing Techniques in Intrusion Detection Systems--Short Review (Suhair H. Amer and John A. Hamilton, Jr.); (2) Semantic Annotation of Stock Photography for CBIR Using MPEG-7 standards (R. Balasubramani and V. Kannan); (3) An Experimental Study…

An analysis to ascertain which electronic data processing (EDP) systems are most flexible in processing wide ranges of volumes efficiently. A simulation model of the job environment of three common EDP systems provides information on the shape of their cost functions in the neighborhood of optimality. (Author/LS)

The frequent reference by geographers and cartographers to 'the language of maps' is made precise by clarifying ways in which maps and other formulations of geographic information constitute a language. Aspects of this language are identified, and emphasis is placed on the use of linguistic concepts for study of models of geographic information…

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…

The revisions applied to the linear discriminant functions (LDF's) for computerized psychiatric diagnosis are discussed in terms of a comparison of the LDF model with decision tree models. It is concluded that each model has its own advantages and disadvantages. (Author/DEP)

Describes the a-e-I-o-u program evaluation approach, a framework for organizing key evaluation questions that allows for many models of evaluation and/or methods of data collection. Evaluations by users of the approach have indicated that it provides a practical way to organize evaluation questions and collect appropriate data. (GCP)

SNAP/SHOT (System Network Analysis Program-Simulated Host Overview Technique) is a discrete simulation of a network and/or host model available through IBM at the Raleigh System Center. The simulator provides an analysis of a total IBM Communications System. Input data must be obtained from RMF, SMF, and the CICS Analyzer to determine the existing…

The process of dealing with real world problems often requires solutions that would not be totally acceptable in the world of "pure" scientific research. A systems analytic viewpoint demands that everything possible be done to define the constraints of the system and that the procedures used to construct a model out of imperfect data be specified.…

The purpose of this study was to explore cost-effectiveness factors that affect the choice among alternative systems. A cost-effectiveness model that may be used to evaluate potential systems was derived and a statement of the general magnitude of costs that the American Psychological Association (APA) can expect in implementing and operating…

This report gives a managerial overview of the Life Cycle Cost Impact Modeling System (LCCIM), which was designed to provide the Air Force with an in-house capability of assessing the life cycle cost impact of weapon system design alternatives. LCCIM consists of computer programs and the analyses which the user must perform to generate input data.…

This appendix outlines the ComField information management system which is designed to give the project management a comprehensive tool for decisionmaking and to free instructors from tasks of keeping current records of every student's performance, help them plan their time more efficiently for counseling students and planning instruction, and…

The benefits of prototyping as a basis for system design include better specifications, earlier discovery of omissions and extensions, and the likelihood of salvaging much of the effort expended on the prototype. Risks and methods of prototyping during rapid systems development are also noted. (Author/MLW)