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Defining Deficient Items by IRT Analysis of Calibration Data.

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Krass, Iosif A.; Thomasson, Gary L. – 1999

New items are being calibrated for the next generation of the computerized adaptive (CAT) version of the Armed Services Vocational Aptitude Battery (ASVAB) (Forms 5 and 6). The requirements that the items be "good" three-parameter logistic (3-PL) model items and typically "like" items in the previous CAT-ASVAB tests have…

Descriptors: Adaptive Testing, Algorithms, Computer Assisted Testing, Nonparametric Statistics

Low Cost Computer Graphics Simulation of Basic Kinematic Linkages.

Peer reviewed

Smith, Donald A.; Jacquot, Raymond G. – CoED, 1984

Presents algorithms for the simulation and motion display of the three basic kinematic devices: (1) four bar linkages; (2) the slider crank; and (3) the inverted slider crank mechanisms. The algorithms were implemented on a Commodore-VIC 20 microcomputer system with 6500 bytes of available memory. (Author/JN)

Descriptors: Algorithms, Computer Graphics, Computer Simulation, Computer Software