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Nicholls, R. L.; Teter, W. D. – Engineering Design Graphics Journal, 1988
Described is a computer algorithm for obtaining the coordinates of vertices, chord factors, and dihedral angles for plotting orthographic and axonometric projections, and for tabulating chord lengths and dihedral angles. (Author)
Descriptors: Algorithms, College Science, Computer Graphics, Computer Software

Kim, Seock-Ho; And Others – Applied Psychological Measurement, 1994
Type I error rates of F. M. Lord's chi square test for differential item functioning were investigated using Monte Carlo simulations with marginal maximum likelihood estimation and marginal Bayesian estimation algorithms. Lord's chi square did not provide useful Type I error control for the three-parameter logistic model at these sample sizes.…
Descriptors: Algorithms, Bayesian Statistics, Chi Square, Error of Measurement

Arcavi, Abraham; Bruckheimer, Maxim – College Mathematics Journal, 1991
Presents the algorithm to approximate square roots as reproduced from the 1579 edition of an algebra book by Rafael Bombelli. The sequence of activities illustrates that the process of understanding an original source of mathematics, first at the algorithmic level and then with respect to its mathematical validity in modern terms, can be an…
Descriptors: Algebra, Algorithms, College Mathematics, Content Area Reading

Lazinger, Susan S. – Information Technology and Libraries, 1994
Describes the history and development of the algorithm that was used to produce a union list of monographs for ALEPH (Automated Library Expandable Program Hebrew University), Israel's research library network. The literature on merging online records is reviewed, case studies are examined, and problems with matching and merging online…
Descriptors: Academic Libraries, Algorithms, Bibliographic Records, Case Studies

Albert, James H. – Journal of Educational Statistics, 1992
Estimating item parameters from a two-parameter normal ogive model is considered using Gibbs sampling to simulate draws from the joint posterior distribution of ability and item parameters. The method gives marginal posterior density estimates for any parameter of interest, as illustrated using data from a 33-item mathematics placement…
Descriptors: Algorithms, Bayesian Statistics, Equations (Mathematics), Estimation (Mathematics)

Rada, Roy; And Others – Computers and Education, 1993
Discussion of collaborative learning focuses on the MUCH (Many Using and Creating Hypermedia) System, developed at the University of Liverpool (England) for designing and implementing collaborative learning systems. Examples of applications of the MUCH System for nursing education and for computer science education are described, including the use…
Descriptors: Algorithms, Computer Assisted Instruction, Computer Science Education, Computer System Design

Hiebert, James; Wearne, Diana – American Educational Research Journal, 1993
Classrooms that used different instructional approaches to mathematics were observed, contrasting instruction that aimed to promote conceptual understanding rather than algorithmic skill with more conventional instruction. Results with 6 second-grade classrooms (135 students) suggest that relationships between teaching and learning are a function…
Descriptors: Algorithms, Classroom Communication, Classroom Environment, Elementary School Students

Cudeck, Robert; And Others – Psychometrika, 1993
An implementation of the Gauss-Newton algorithm for the analysis of covariance structure that is specifically adapted for high-level computer languages is reviewed. This simple method for estimating structural equation models is useful for a variety of standard models, as is illustrated. (SLD)
Descriptors: Algorithms, Analysis of Covariance, Computer Software, Equations (Mathematics)

Freedman, David A.; And Others – Evaluation Review, 1993
Techniques for adjusting census figures are discussed, with a focus on sampling error, uncertainty of estimates resulting from the luck of sample choice. Computer simulations illustrate the ways in which the smoothing algorithm may make adjustments less, rather than more, accurate. (SLD)
Descriptors: Algorithms, Census Figures, Computer Simulation, Error of Measurement

Tauchert, Wolfgang; And Others – Online Review, 1991
Describes the PADOK-II project in Germany, which was designed to give information on the effects of linguistic algorithms on retrieval in a full-text database, the German Patent Information System (GPI). Relevance assessments are discussed, statistical evaluations are described, and searches are compared for the full-text section versus the…
Descriptors: Abstracts, Algorithms, Bibliographic Databases, Comparative Analysis

Johnston, Mark; Weckert, John – Information Technology and Libraries, 1990
Describes the development of an expert system to help in the selection of materials for academic libraries. A model of selection criteria is explained, computerization of the model is discussed, user-defined criteria are considered, and machine learning of rules through the use of algorithms is described. (18 references) (LRW)
Descriptors: Academic Libraries, Algorithms, Evaluation Criteria, Expert Systems

Schliemann, Analucia Dias; And Others – Journal of Mathematical Behavior, 1993
A 14-year-old Brazilian boy in the fourth grade was given 170 problems orally, each asking for the sum of 2 2-digit numbers. Responses indicated he had invented his own algorithm for addition, similar to the school one, based largely on his experiences with money. (Contains 13 references.) (JAF)
Descriptors: Addition, Algorithms, Case Studies, Computation

de Berg, Kevin C. – Science and Education, 1992
Discusses the use of a historical profile for illustrating the significance of the mathematical components of scientific laws. Addresses the need for the purposive use of scientific laws rather than the blind substitutionary procedures characteristic of most problem solvers. Claims the approach has the potential for increasing female participation…
Descriptors: Algorithms, Elementary Secondary Education, Interdisciplinary Approach, Mathematics

Kostoff, R. N.; Eberhart, Henry J.; Toothman, Darrell Ray – Journal of the American Society for Information Science, 1999
Database Tomography (DT) is a textual database-analysis system consisting of algorithms for extracting multiword phrase frequencies and proximities from a large textual database, to augment interpretative capabilities of the expert human analyst. Describes use of the DT process, supplemented by literature bibliometric analyses, to derive technical…
Descriptors: Algorithms, Bibliometrics, Computer Oriented Programs, Data Analysis

Pagni, David L.; Shultz, Harris S. – Mathematics Teaching in the Middle School, 1999
Presents a problem that requires solving a card problem by exploring patterns that will lead to a logical solution. Involves students in developing and analyzing their own algorithms as well as discussing their reasoning with peers. (ASK)
Descriptors: Algorithms, Elementary Education, Junior High Schools, Mathematics Activities