Background: The aim of this study is to validate a newly developed nurses' self-efficacy sources inventory. We test the validity of a five-dimensional model of sources of self-efficacy, which we contrast with the traditional four-dimensional model based on Bandura's theoretical concepts. Methods: Confirmatory …

De spellen die kinderen spelen maken elke paar jaar weer enorme veranderingen door. Hoewel er nog genoeg kinderen ʻs avonds een potje voetbal spelen, wordt er in het weekend net zo vaak een DVD met FIFA 11 in de Xbox 360 gestoken. Het mag duidelijk zijn: alles verandert in een hoog tempo en alles wordt …

Model calculations and the few data that are available show that over 100 L water condense yearly on each square meter of a greenhouse cover. It is known that the presence of condensate reduces light transmission. This effect is suppressed to some extent by adding film-forming (anti-drop) additives to …

Optimal postural control is an essential capacity in daily life and can be highly variable. The purpose of this study was to investigate if young people have the ability to choose the optimal postural control strategy according to the postural condition and to investigate if non-specific low back pain …

From the literature three types of predictors for factor scores are available. These are characterized by the constraints: linear, linear conditionally unbiased, and linear correlation preserving. Each of these constraints generates a class of predictors. Best predictors are defined in terms of L?wner's …

De conceptuation methode maakt gebruik van technieken die het creatief denken van ondernemers stimuleert en benut. Deze technieken zijn afgeleid uit de “theorie van creatief problemen oplossen” (CPS) en de “theorie van inventief denken” (TRIZ). De conceptuation methode maakt gebruik van de creatieve …

In 1949 the People's Republic of China emerged from a civil war with communist Mao Zedong as its victor. During the peak of Mao's rule China was completely isolated from the world. In the 1960's China lost the support of the Soviet Union due to failed policies such as the Great Leap Forward and various …

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 …