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This review describes a meta-analysis of findings from 50 controlled evaluations of intelligent computer tutoring systems. The median effect of intelligent tutoring in the 50 evaluations was to raise test scores 0.66 standard deviations over conventional levels, or from the 50th to the 75th percentile. However, the amount of improvement found in an evaluation depended to a great extent on whether improvement was measured on locally developed or standardized tests, suggesting that alignment...
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Revolutionary ideas on how to use markets to bring about fairness and prosperity for all Many blame today's economic inequality, stagnation, and political instability on the free market. The solution is to rein in the market, right? Radical Markets turns this thinking--and pretty much all conventional thinking about markets, both for and against—on its head. The book reveals bold new ways to organize markets for the good of everyone. It shows how the emancipatory force of genuinely open,...
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"The Active Interview" takes a constructionist perspective on the interviewing process and interview products [in ethnographic research]. To Holstein and Gubrium, interviews are social productions. With this orientation, respondents are better seen as narrators or storytellers, and ethnographers are cast as participants in the process. Working together, the interviewer and narrator actively construct a story and its meaning. Interviewing, then, is inherently collaborative and problematic....
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ENGLISH ABSTRACT: The South African public technical and vocational education and training (TVET) colleges have experienced considerable change in the past 20 years. Recently, these colleges have become the focal point of education and training, ever since the publication of the Green Paper on Post-School Education and Training in 2012, transferring the colleges to the higher education and training system. These colleges are expected to increase their enrolments from 650 000 to 2.5 million...
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Increased social and academic segregation are known side effects of school choice policies in market-driven environments that facilitate competition amongst schools. Aiming at complementing foundational knowledge in quantifying segregation, this study first defines school markets (i.e., geographical context) based on student transitions from primary school to secondary school in Hamburg, Germany. Second, genuine spatial measures of segregation are applied to generate differentiated in-situ...
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Overlap in meta-reviews results from the use of multiple identical primary studies in similar reviews. It is an important area for research synthesists because overlap indicates the degree to which reviews address the same or different literatures of primary research. Current guidelines to address overlap suggest that assessing and documenting the degree of overlap in primary studies, calculated via the corrected covered area (CCA) is a promising method. Yet, the CCA is a simple percentage...
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Computational thinking is of growing interest to the science, technology, engineering, and mathematics (STEM) education research community. Calls from national agencies look to increase computation in STEM education. This review identifies key areas for future study by reviewing recent empirical studies that investigate computational thinking in teaching and learning contexts within higher education. Using a systematic process, this review identified four different databases for...
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Examined the influence of the quality of the teacher-student relationship on children's subsequent levels of aggression in a sample of 61 second and third-grade children nominated and rated by teachers as aggressive. The stability of teachers' and children's reports of relationship quality across academic years was in the low to moderate range. Teachers and children showed little agreement in their reports of relationship quality. Teachers' and children's reports of relationship quality in...
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Background: The Cochrane Handbook for Systematic Reviews of Interventions provides instructions for documenting a systematic review's electronic database search strategy, listing elements that should be in the description. Complete documentation of the search strategy allows readers to evaluate the search when critically appraising a review's quality. Objective: The research analyzed recently published Cochrane reviews to determine whether instructions for describing electronic database...
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The present study describes the use of the finite element method to determine the effect of the gypsum board ceiling on room temperature. A simulation of air particles coming from air conditioners is carried out in a large room and the simulation is repeated after providing a gypsum board ceiling in the room, to identify its effect on room temperature. A three-dimensional computer-aided design (CAD) model of a large room with three air conditioners was made and the flow behaviour of air...
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Abstract The parameterization of moist convection contributes to uncertainty in climate modeling and numerical weather prediction. Machine learning (ML) can be used to learn new parameterizations directly from high‐resolution model output, but it remains poorly understood how such parameterizations behave when fully coupled in a general circulation model (GCM) and whether they are useful for simulations of climate change or extreme events. Here we focus on these issues using...
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