The purpose of this study was to examine the effects of information and communication technologies (ICT) on students’ math and science achievement. Recently, ICT has been widely used in classrooms for teaching and learning purposes. Therefore, it is important to investigate how these technological developments affect students’ performance at school. The data for this study comes from the 2009 a...

With the growing popularity of Crowdsourcing (CS), companies are developing different strategies to tap into the creativity of the crowd. Some of these strategies imply the long-term involvement of communities of external individuals. Since participation in CS is voluntary, it is important to understand the determinants of participation. Several studies exist that investigated the motivations o...

Using a 1996 national survey of housing in China and a multilevel modelling technique, we examine housing tenure choice in transitional urban China where households have been granted limited freedom of choice in the housing market since the housing reforms of 1988. We Ž nd that both market mechanisms and institutional forces affect households’ tenure choice in urban China. While some socioecono...

It is well touted that embedding information technology (IT) capabilities in supply chain processes would allow firms to derive competitive advantage. Yet the outcomes of such embeddedness vary greatly across companies. Investigating how a firm configures appropriate IT capabilities with supply chain integration (SCI) to achieve superior performance is of significance. Drawing upon the dynamic ...

This article examines the impact of the introduction of roles and the added value of selfassessment on students‟ level of knowledge construction in online asynchronous discussions in a first year university course in instructional sciences. Students‟ postings in 20 discussion groups were used as the research data for this study. All messages, submitted during the 12 week discussion period, comp...

This paper investigates the prevalence of coworker and supervisor incivility in the context of K-12 schools and incivility’s possible link to teachers’ commitment to the school and turnover intent. The data were collected via surveys from 94 middle school teachers in the United States. Results indicated that 85% of the teachers experienced coworker incivility over the past year; 71% experienced...

This paper advances an empirical model assessing how changing economic and ecological conditions at different spatial scales affect land conversion decisions. We apply a multilevel econometric model to explore the implications for parameter estimates and their standard errors of ignoring hierarchical groupings in the data. The paper draws on a panel of agricultural-household data collected from...

A two-yers longitudinal study waz conducted in 1996.the data are letated to a cohort of 317 healthy neonated(164 girls and 153 boys) randomly selected in june 1996 from the city of shiraz followed from birth to two years of age.Firstly,logistic regression model and HRY (Healy-Rashash-Yang)method were used on ten selected milestones separately.secondly, we use an auto-regressive multivariate mul...

1. Correlated errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1 Temporal correlation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Spatial correlation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...