This study used existing digital technologies as probes to explore teenager’s use of exerciserelated technology, their usage contexts, and their ideas for the design of ubiquitous technology that would persuade their peers to be more active in their daily lives. The teenagers formed two groups using two different types of step counters as their data collection device. Both groups used the same ...

Previous research suggests that Mexican female migrants face more barriers than their male counterparts. However, few studies examine how the educational characteristics of female migrants differ from those of male migrants and how selectivity may have changed in the context of evolving gender dynamics in both countries. This study uses U.S. and Mexican census data from 1960 to 2000 to compare ...

The authors address the verification of the functional properties of self-efficacy beliefs and document how self-efficacy beliefs operate in concert with goal systems within a sociocognitive theory of self-regulation in contrast to the focus of control theory on discrepancy reduction. Social cognitive theory posits proactive discrepancy production by adoption of goal challenges working in conce...

AEL systemic school reform (Mirel, 2001). In the spring of 2001, the fiveyear districtwide initiative requiring all schools to adopt whole-school reform models was discontinued; no Memphis school would be permitted to implement its model in the coming year. What happened in association with the initiative, and what lessons can be learned from the Memphis experience that might benefit all school...

This study assesses the effect of population change on decade changes in the educational attainments of country of origin populations in the United States. Our data are derived from decennial censuses, NLMS, the World Bank, and INS. We find that changes in the share of country of origin populations with one or more years of post-secondary schooling are associated with selected components of pop...

Understanding why some national-origin groups excel in school while others do not is an enduring sociological puzzle. This paper examines whether the degree of immigrants’ educational selectivity that is, how immigrants differ educationally from non-migrants in the home country influences educational outcomes amon roups of immigrants’ children. This study uses published internationa f! ata and ...

Computer-assisted instruction (CAI) programs are considered as a way to improve learning outcomes of students. However, little is known on the schools who implement such programs as well as on the effectiveness of similar ICT-programs. We provide a literature review which pays special attention to the existing causal evidence of computer-assisted programs on learning outcomes. The paper relies ...

This paper describes an authorship, and more generally document classification, experiment on a preexisting Dutch corpus of university writings. By measuring linguistic distances using a cross-entropy technique, a technique sensitive not only to the distributions of language features, but also to their relative intersequencing, classification judgments can be made with great sensitivity, signif...

3D video is the ultimate image media recording dynamic visual events in the real world as is. Recorded object actions can be observed from any viewpoint; 3D video records the object’s full 3D shape, motion, and precise surface properties (i.e. color and texture). In this paper, we present research attainments so far obtained: 1. a PC cluster system for real-time reconstruction of dynamic 3D obj...