A Monte Carlo study investigated the ability of the ALSCAL multidimensional scaling program to recover true structure inherent in simulated proximity measures when data were missing. The program worked well with up to 60 percent missing data as long as sample size was large and random error was low. (Author/JKS)

The aims of the first phase of the Statistics Indexing and Retrieval (STIR) Project have been: (1) to define the types and sources of statistics which should be within the scope of an operational indexing system for statistical sources; (2) to analyze the use made of statistical sources; and (3) to consider the intellectual, structural, and…

A study was undertaken to develop guidelines for the interpretation of the parameters of three multidimensional item response theory models and to determine the relationship between the parameters and traditional concepts of item difficulty and discrimination. The three models considered were multidimensional extensions of the one-, two-, and…

The Comprehensive Occupational Data Analysis Programs (CODAP) are designed for analyzing and retrieving occupational survey information collected by means of job inventories. Two programs that are parts of the CODAP system are described: the Ordering of Hierarchically Grouped Case Data (KPATH) program which reorders case data permitting…

This report summarizes the findings and describes the products of a 2-part research project that examined the parameters of Washington's interlibrary loan cooperation statewide, and developed a set of computer models to be used in simulation studies of associated activities and policies. It contains a statement of the problem; an historical…

This report outlines specifications for the online transaction monitoring and questionnaire administration features of the University of California's (UC) Prototype On-Line Catalog, known as MELVYL. The development and testing of these features by the UC Division of Library Automation (DLA) is also described. This document is the final report…

General documentation for the Enrollment Projection Model used by the Maryland Council for Higher Education (MCHE) is provided. The manual is directed toward both the potential users of the model as well as others interested in enrollment projections. The first four chapters offer administrators or planners insight into the derivation of the…

The Educational Simulation Model (ESM), developed by UNESCO, is designed for use at the national level for long range simulation of educational system fluctuations. The model is a set of equations which describe an educational program and the changes and flows in student enrollment in all the courses of an educational system. Thus the model is…

The third in a series of six reports on higher education in Iowa, this document presents enrollment projections for Iowa postsecondary education institutions from 1978 through 1986. Data were collected from the regents universities, independent colleges, and area colleges throughout the state. A computerized nonprescriptive projection model was…