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141.
Louis M. Hsu 《Structural equation modeling》2013,20(2):152-154
Fraas and Newman's (1994) binomial test of goodness of fit of structural equation models is based on the assumption that counts of path estimates consistent with a researcher's expectations can be viewed as, binomial random variables. In this article I argue that these counts do not have binomial distributions because of the lack of independence among estimates of path coefficients of structural equation models. 相似文献
142.
Janay B. Sander Jill D. Sharkey Amber N. Groomes Lauren Krumholz Kimberly Walker Julie Y. Hsu 《Journal of educational and psychological consultation》2013,23(4):309-337
Youths involved in juvenile justice face unique barriers to educational and mental health services. This qualitative study illustrates social justice violations that are particularly salient for this population. Youths on probation, their mothers, and juvenile probation staff participated in interviews as part of a multisite study conducted in Texas and California. Interviews were coded using the Consensual Qualitative Research method. This study provides detailed examples of social justice components of fairness, respect, and access within school and juvenile justice settings. Implications for how schools could address these types of situations to promote fairness and decrease discrimination and stigma for youths with a criminal record who are trying to succeed in school are also discussed. 相似文献
143.
Fu-Hsing Tsai Charles Kinzer Kuo-Hsun Hung Cheng-Ling Alice Chen I-Ying Hsu 《Interactive Learning Environments》2013,21(2):116-128
While most current educational simulation games provide learners with gameplay experience to motivate learning, there is often a lack of focus on ensuring that the desired content knowledge is actually learned. Students may focus on completing game activities without learning the targeted content knowledge, thus negating the desired learning outcomes. We argue that to help students achieve improved learning performance, providing targeted content knowledge should be a specific focus in designing educational games; in addition, scaffolding strategies to promote the use of in-game contents should also be provided. Thus, the present study explores the effects and usage of providing three types of scaffolding aids in two versions of educational simulations with in-game contents. The results suggest that providing targeted content with scaffolding aid in educational simulation games helps students to achieve better learning performance. 相似文献
144.
Computer-based learning tools include design features to enhance learning but learners may not always perceive the existence of these features and use them in desirable ways. There might be a gap between what the tool features are designed to offer (intended affordance) and what they are actually used (actual affordance). This study thus aims at investigating how the design features of a computer-based tool supported high school students' modeling practices in atmospheric sciences. Twenty-three 10th graders participated in 16 hours of learning activities by using the tool. We conducted a detailed analysis of students' computer activities, their use of the design features, and their building, testing, analyzing, and evaluating practices. The analysis showed that while some design features such as Variable List and Testing Variables were perceived by students and successfully afforded their enactment of building and analyzing practices, other features including Screen Shot and Edit were rarely used or not utilized in the desirable ways. Based on the findings, this study suggests that the realization of intended affordances may involve factors of learners' characteristics, the nature of learning activities, and the complexity of tasks, and constructs an affordance analysis scheme to inform the design of computer-based learning tools. 相似文献
145.
Hui-Yin Hsu Shiang-Kwei Wang Lisa Runco 《Journal of Science Education and Technology》2013,22(3):314-324
Due to the rapid advancements of information and communication technologies (ICTs), educational researchers argue that multimodal and new literacies should become common practices in schools. As new ICTs emerge and evolve, students need the new literacies skills and practices to successfully participate fully in the civic life of a global community. Are teachers prepared to integrate ICTs in the classroom to develop students’ new literacies skills? The purpose of this study is to suggest a new literacies framework that guides ICTs integration and supports scientific inquiry, as well as investigate middle school teachers’ confidence to practice new literacies in science classrooms. The study adopted mixed-methodology design, surveyed 32 middle school science teachers’ ICTs and new literacies skills, and randomly observed 15 teachers’ new literacies practices in the classrooms. The results revealed that even though teachers have high confidence in using ICTs, the meaningful technology integration and new literacies practices were scarcely observed in their classroom practices. 相似文献
146.
The study, using a Monte Carlo technique, was designed to investigate the effect of the differences in covariate means among the treatment groups on the significance level and the power of the F-test of the analysis of covariance. The results show that the covariate group means differences have little effect on the significance level if the covariate is highly correlated with the criterion variable. However, if the correlation is .4 or less, larger sample sizes are required. The effect on the power is more sensitive for smaller experiments. The larger the differences among covariate group means, the lower the actual power becomes compared to the approximate theoretical power. 相似文献
147.
Pei‐Ling Hsu Michiel van Eijck Wolff‐Michael Roth 《International Journal of Science Education》2013,35(9):1243-1266
Working at scientists’ elbows is one suggestion that educators make to improve science education, because such “authentic experiences” provide students with various types of science knowledge. However, there is an ongoing debate in the literature about the assumption that authentic science activities can enhance students’ understandings of scientific practice. The purpose of the study is to further address the debate in terms of the ethnographic data collected during an internship programme for high school students right through to their public presentations at the end. Drawing on activity theory to analyse these presentations, we found that students presented scientific practice as accomplished by individual personnel without collaboration in the laboratory. However, our ethnographic data of their internship interaction show that students have had conversations about the complex collaborations within and outside the laboratory. This phenomenon leads us to claim that students experienced authentic science in their internships, but their subsequent representations of authentic science are incomplete. That is, participating in authentic science internships and reporting scientific practice are embedded activities that constitute different goals and conditions rather than unrefracted reflections of one another. The debate on the influence on students’ understanding of science practice is not simply related to situating students in authentic science contexts, but also related to students’ values and ideology of reporting their understanding of and about science. To help students see these “invisible” moments of science practice is therefore crucial. We make suggestions for how the invisible in and of authentic science may be made visible. 相似文献
148.
Janet M. Shaw Nadia M. Hamad Tanner J. Coleman Marlene J. Egger Yvonne Hsu Robert Hitchcock 《Journal of sports sciences》2013,31(12):1176-1185
AbstractStrenuous physical activity has been linked to pelvic floor disorders in women. Using a novel wireless intra-vaginal pressure transducer, intra-abdominal pressure was measured during diverse activities in a laboratory. Fifty-seven women performed a prescribed protocol using the intra-vaginal pressure transducer. We calculated maximal, area under the curve and first moment of the area intra-abdominal pressure for each activity. Planned comparisons of pressure were made between levels of walking and cycling and between activities with reported high pressure in the literature. Findings indicate variability in intra-abdominal pressure amongst individuals doing the same activity, especially in activities that required regulation of effort. There were statistically significant differences in maximal pressure between levels of walking, cycling and high pressure activities. Results for area under the curve and first moment of the area were not always consistent with maximal pressure. Coughing had the highest maximal pressure, but had lower area under the curve and first moment of the area compared to most activities. Our data reflect novel findings of maximal, area under the curve and first moment of the area measures of intra-abdominal pressure, which may have clinical relevance for how physical activity relates to pelvic floor dysfunction. 相似文献
149.
Te Hung Tsao Chang Bin Yang Chin Hsing Hsu 《Research quarterly for exercise and sport》2013,84(2):293-299
We investigated the effects of different exercise intensities on C-reactive protein (CRP), and whether changes in CRP levels correlated with blood lipid levels. Ten men exercised at 25%, 65%, and 85% of their maximum oxygen consumption rates. Participants' blood was analyzed for CRP and blood lipid levels before and after the exercise sessions. Although there was an intensity effect for postexercise high-density lipoprotein levels, there were no significant differences or correlations for postexercise CRP levels or between CRP and lipid levels across the three exercise intensities. In an acute aerobic bout model with isoenergetic expenditures, CRP was not affected by the exercise intensity. Additionally, changes in blood lipid levels might not have been connected to CRP levels for physically fit participants. 相似文献
150.