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121.
The authors describe a sexual education program that was aired by the campus radio station at Kansas State University. Use of college radio to promote student health issues is first reviewed. Specific program content and production obstacles are then discussed. Recommendations for future shows are made. 相似文献
122.
123.
Jia-Wei Zhang Lam Wong Tak-Hang Chan Chi-Shing Chiu 《Frontiers of Education in China》2014,9(2):250-273
Using a qualitative case study approach, the authors analyzed the curriculum adaptation process for one project learning activity in School K, which is a SID school in the context of school-university collaboration. Multiple sources of data were collected for triangulation, including interviews, documents and observations. Curriculum adaptation strategies in this study were analyzed from five perspectives: instructional goals, instructional content, instructional strategies, instructional settings, and student behavioral needs. It was found that curriculum adaptation efforts could help students with ID develop potential at their own level through project learning activates and teachers could also gain professional development during the university-school collaboration process. As for future studies, enlarging the sample size, involving teachers’ past orientations and motivations in the project learning process, and collecting quantitative data could all be taken into account. 相似文献
124.
125.
Ricky Lam 《Assessment & Evaluation in Higher Education》2014,39(6):699-714
Portfolio assessment (PA) has been extensively adopted for writing development in the past three decades. Much research on PA primarily investigates students’ and teachers’ perceptions of its benefits, and how it influences students’ motivation and general writing abilities. Despite its purported effectiveness, not much has been done to understand the relationship between PA and self-regulated learning (SRL) especially in English as a Foreign Language (EFL) or English as a Second Language (ESL) writing research. This paper contends that PA can productively foster SRL in EFL writing classrooms, and, more specifically, it develops a conceptual model of SRL within the context of writing portfolios and iterative feedback processes. Supporting evidence emphasising how PA can facilitate SRL is discussed and evaluated. The paper ends with six recommendations and implications proposing how SRL can be promulgated in EFL portfolio-based contexts. Finally, possible future research is suggested. 相似文献
126.
This paper is concerned with the problems of reachable set estimation and state-feedback controller design for linear systems with distributed delays and bounded disturbance inputs. The disturbance inputs are assumed to be either unit-energy bounded or unit-peak bounded. First, based on the Lyapunov–Krasovskii functional approach and the delay-partitioning technique, delay-dependent conditions for estimating the reachable set of the considered system are derived. These conditions guarantee the existence of an ellipsoid that contains the system state under zero initial conditions. Second, the reachable set estimation is taken into account in the controller design. Here, the purpose is to determine an ellipsoid and find a state-feedback controller such that the determined ellipsoid contains the reachable set of the resulting closed-loop system. Sufficient conditions for the solvability of the control synthesis problem are obtained. Based on these results, the problem of how to design a controller such that the state of the resulting closed-loop system is contained in a prescribed ellipsoid is studied. Finally, numerical examples and simulation results are provided to show the effectiveness of the proposed analysis and design methods. 相似文献
127.
Reginald Tran Byungwook Ahn David R. Myers Yongzhi Qiu Yumiko Sakurai Robert Moot Emma Mihevc H. Trent Spencer Christopher Doering Wilbur A. Lam 《Biomicrofluidics》2014,8(4)
Cell culture in microfluidic systems has primarily been conducted in devices comprised of polydimethylsiloxane (PDMS) or other elastomers. As polystyrene (PS) is the most characterized and commonly used substrate material for cell culture, microfluidic cell culture would ideally be conducted in PS-based microsystems that also enable tight control of perfusion and hydrodynamic conditions, which are especially important for culture of vascular cell types. Here, we report a simple method to prototype perfusable PS microfluidics for endothelial cell culture under flow that can be fabricated using standard lithography and wet laboratory equipment to enable stable perfusion at shear stresses up to 300 dyn/cm2 and pumping pressures up to 26 kPa for at least 100 h. This technique can also be extended to fabricate perfusable hybrid PS-PDMS microfluidics of which one application is for increased efficiency of viral transduction in non-adherent suspension cells by leveraging the high surface area to volume ratio of microfluidics and adhesion molecules that are optimized for PS substrates. These biologically compatible microfluidic devices can be made more accessible to biological-based laboratories through the outsourcing of lithography to various available microfluidic foundries. 相似文献
128.
In a study investigating different ways to engage students in an individual preparation activity, we assessed learning from collaboration with a peer. Learning was measured at pretest, individual preparation, collaboration, and posttest. Two conditions were compared: generative preparation and nongenerative preparation. With no differences in knowledge at pretest, we found that students who prepared by engaging in the generative compared to the nongenerative preparation task performed worse to a statistically significant degree in both the preparation and collaboration phases. However, in a postactivity transfer task, the students performed to a similar degree as the comparison group evidencing productive failure. In addition, students in the generative condition showed greater learning gains from the preparation to the collaboration phase. We introduce the notion that generative preparation may better invoke learning mechanisms that help students to learn from subsequent collaboration. 相似文献
129.
Ho Cheong Lam 《Scandinavian Journal of Educational Research》2013,57(4):343-356
The variation theory developed by Marton has quickly become popular as a framework for providing guidance for making learning possible. However, the epistemological assumption behind the theory is often accepted without critical scrutiny. This paper poses an apparent problem of the possible occurrence of learning in the situation of generalization, where one aspect is kept invariant, while other aspects vary. Eventually some of the learners can learn the invariant aspect. However, variation theory entails that the experience of variation in an aspect is necessary for learners to discern that aspect. How then is it possible for the learners in a situation of generalization to fully discern the invariant aspect? Through scrutinizing the epistemological assumption, I hope to foster discussion toward further improvement of the theory. 相似文献
130.
In this study we examined the relationship between teacher and student intrinsic motivation in project-based learning. The
participants were 126 Hong Kong secondary school teachers and their 631 students who completed evaluation questionnaires after
a semester-long project-based learning program. Both teachers and students were asked to indicate their motivation in the
program, and students were also asked to report the instructional support they received from their teachers. The results of
hierarchical linear modeling analyses showed that teacher intrinsic motivation predicted student intrinsic motivation directly
as well as indirectly through the mediation of instructional support. When teachers reported higher intrinsic motivation in
the program, their students tended to perceive receiving more support from them and to report higher intrinsic motivation
in the learning experience. 相似文献