The basic level of postural control is functionally active from early infancy onwards: young infants possess a repertoire of direction-specific postural adjustments. Whether or not direction-specific adjustments are used depends on the child's age and the nature of the postural task. The second level …

The assumptions of the model for factor analysis do not exclude a class of indeterminate covariances between factors and error variables (Grayson, 2003). The construction of all factors of the model for factor analysis is generalized to incorporate indeterminate factor-error covariances. A necessary …

Sufficient conditions for mean square convergence of factor predictors in common factor analysis are given by Guttman, by Williams, and by Schneeweiss and Mathes. These conditions do not hold for confirmatory factor analysis or when an error variance equals zero (Heywood cases). Two sufficient conditions …

A construction method is given for all factors that satisfy the assumptions of the model for factor analysis, including partially determined factors where certain error variances are zero. Various criteria for the seriousness of indeterminacy are related. It is shown that B. F. Green's (1976) conjecture …

Dit boek is bedoeld voor analisten van objectgeoriënteerde systemen en degenen die hiervoor in opleiding zijn. Maar het boek kan ook interessant zijn voor wie zich bezig houdt met informatiemodellering in het algemeen. Dit boek beschrijft de EXPO-methode (expression based object modeling) waarmee op …

Dit boek is bedoeld voor analisten van objectgeoriënteerde systemen en degenen die hiervoor in opleiding zijn. Maar het boek kan ook interessant zijn voor wie zich bezig houdt met informatiemodellering in het algemeen. Dit boek beschrijft de EXPO-methode (expression based object modeling) waarmee op …

Abstract—In many biomechanical motion studies, kinematic parameters are estimated from position measurements on a number of landmarks. In the present investigation, dummy motion experiments are performed in order to study the error dependence of kinematic parameters on geometric factors (number of markers, …