Learned Societies,Practitioners and their ‘Professional’ Societies: Grounds for developing closer links     

Leon Benade 《Educational Philosophy and Theory》2016,48(14):1395-1400

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Robust fluidic connections to freestanding microfluidic hydrogels     

Shannon L. Faley  Bradly B. Baer  Taylor S. H. Larsen  Leon M. Bellan 《Biomicrofluidics》2015,9(3)

Biomimetic scaffolds approaching physiological scale, whose size and large cellular load far exceed the limits of diffusion, require incorporation of a fluidic means to achieve adequate nutrient/metabolite exchange. This need has driven the extension of microfluidic technologies into the area of biomaterials. While construction of perfusable scaffolds is essentially a problem of microfluidic device fabrication, functional implementation of free-standing, thick-tissue constructs depends upon successful integration of external pumping mechanisms through optimized connective assemblies. However, a critical analysis to identify optimal materials/assembly components for hydrogel substrates has received little focus to date. This investigation addresses this issue directly by evaluating the efficacy of a range of adhesive and mechanical fluidic connection methods to gelatin hydrogel constructs based upon both mechanical property analysis and cell compatibility. Results identify a novel bioadhesive, comprised of two enzymatically modified gelatin compounds, for connecting tubing to hydrogel constructs that is both structurally robust and non-cytotoxic. Furthermore, outcomes from this study provide clear evidence that fluidic interconnect success varies with substrate composition (specifically hydrogel versus polydimethylsiloxane), highlighting not only the importance of selecting the appropriately tailored components for fluidic hydrogel systems but also that of encouraging ongoing, targeted exploration of this issue. The optimization of such interconnect systems will ultimately promote exciting scientific and therapeutic developments provided by microfluidic, cell-laden scaffolds.  相似文献   

Integration of Scientific Competence into Gross Anatomy Teaching Using Poster Presentations: Feasibility and Perception among Medical Students     

Michael Schön  Konrad Steinestel  Doreen Spiegelburg  Annika Risch  Mira Seidel  Leon Schurr  Ulrich Kai Fassnacht  Nikola Golenhofen  Tobias Maria Böckers  Anja Böckers 《Anatomical sciences education》2022,15(1):89-101

Scientific competencies, as defined in the German competency framework, describe the ability to think independently and act scientifically which is a central component of medical education. This report describes integration of scientific competencies into anatomical teaching. Based on findings seen in two consecutive years of dissection courses, students worked on either a case report (n = 70) or an original research study (n = 6) in the format of a scientific poster while learning to use primary literature. Posters were evaluated by juror teams using standardized evaluation criteria. Student perception of the project was assessed by quantitative and qualitative data obtained from the faculty's course evaluation and an online-survey. Overall, students worked collaboratively and invested extra-time (median 3.0 hours) in poster creation. Primary literature was integrated in 90.8% of the posters. Overall poster quality was satisfactory (46.3 ± 8.5 [mean ± standard deviation] out of 72 points), but several insufficiencies were identified. Students integrated information gained from the donor's death certificate, post-mortem full-body computed tomography (CT) scan (22.4%), and histopathological workup (31.6%) in their case reports. Students responded positively about learning new scientific skills (median 4.0 on a six-point Likert scale), but free-text answers revealed that some students experienced the project as an extra burden in a demanding gross anatomy course. In summary, it was feasible to introduce students to scientific skills during the dissection course and to increase interest in science in approximately a third of the survey respondents. Further adjustments to ensure the posters' scientific quality might be necessary for the future.  相似文献   

Is There a Future for Black Students on Predominantly White Campuses?     

Leon F. Burrell 《Equity & Excellence in Education》2013,46(5-6):23-27

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Social justice,capabilities and the quality of education in low income countries   总被引：1，自引：0，他引：1  

Leon Tikly  Angeline M. Barrett 《International Journal of Educational Development》2011

The paper sets out a theoretical approach for understanding the quality of education in low income countries from a social justice perspective. The paper outlines and critiques the two dominant approaches that currently frame the debate about education quality, namely, the human capital and human rights approaches. Drawing principally on the ideas of Nancy Fraser and Amyarta Sen the paper then sets out an alternative approach based on a theory of social justice and of capabilities. The paper develops an overall understanding of how education quality can be understood in relation to the extent to which it fosters key capabilities that individuals, communities and society in general have reason to value. It then analyses three inter-related dimensions of the quality of education from a social justice perspective. Each dimension is considered in relation to contemporary policy debates and research including the work of EdQual. The first dimension, that of inclusion draws attention to the access of different groups of learners to quality inputs that facilitate the development of their capabilities, the cultural and institutional barriers that impact on the learning of different groups and priorities for overcoming these. The second dimension, that of relevance, is concerned with the extent to which the outcomes of education are meaningful for all learners, valued by their communities and consistent with national development priorities in a changing global context, whilst the third dimension, that of democracy considers how decisions about education quality are governed and the nature of participation in debates at the local, national and global levels. It is argued that a social justice framework can provide an alternative rationale for a policy emphasis on quality that encompasses but goes beyond that provided by human capital and rights approaches; that through emphasising the importance of context and through providing a normative basis for thinking about quality in relation to development, it provides a useful starting point for re-conceptualising education quality and how it can be evaluated; and, that it draws attention to the central importance of public dialogue and debate at the local, national and global levels about the nature of a quality education and quality frameworks at these levels.  相似文献   

Content Validity Studies of Licensing Examinations     

I. Leon Smith  Ronald K. Hambleton 《Educational Measurement》1990,9(4):7-10

Can measurement specialists’current ideas about content validation be implemented with licensure examinations? Does pressure of litigation facilitate or inhibit conducting validity studies?  相似文献   

Estimating a multi attribute model for different music styles     

Leon Alpert 《Journal of Cultural Economics》1983,7(1):63-81

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Early education teachers’ conceptualizations and strategies for managing closeness with the class in child care     

Sharon Quan-McGimpsey  Sarah Carmen Marziliano  Trevor Gregory Hassen  Allison Sandra Brown  Leon Kuczynski 《Teachers and Teaching》2013,19(5):514-526

This study investigated teachers’ experiences of closeness during interactions with the group of children in child care. Structured interviews were conducted with 24 female teachers who were teaching children between the ages of three and five (mean age = 3.9) regarding their perceptions of closeness with the group of children in the class. Qualitative analyses of the interviews revealed a group solidarity domain of teacher–group relationships composed of three dimensions which comprise emotional solidarity, consensual solidarity, and functional solidarity, with emotional solidarity most dominant in the teachers’ perceptions. This group solidarity domain was interpreted as being consistent with qualities found in Grusec and Davidov’s group participation domain. The findings that, teachers’ closeness with the group of children in the class were dominated by the emotional dimension is similar to previous research results which report the predominance of personal and intimate interactions in relational closeness between teachers and individual children. Teachers described intentional strategies for managing close group relationships that made use of interactional histories between the teachers and children in the class. These discoveries provide a new perspective on teacher closeness with groups, an area of research not often investigated. It also provides insights into the importance teachers place on connecting emotionally with children when they are with the collective group in the classroom.  相似文献   

Using Web-Based Key Character and Classification Instruction for Teaching Undergraduate Students Insect Identification     

Douglas A. Golick  Tiffany M. Heng-Moss  Allen L. Steckelberg  David. W. Brooks  Leon G. Higley  David Fowler 《Journal of Science Education and Technology》2013,22(4):509-521

The purpose of the study was to determine whether undergraduate students receiving web-based instruction based on traditional, key character, or classification instruction differed in their performance of insect identification tasks. All groups showed a significant improvement in insect identifications on pre- and post-two-dimensional picture specimen quizzes. The study also determined student performance on insect identification tasks was not as good as for family-level identification as compared to broader insect orders and arthropod classification identification tasks. Finally, students erred significantly more by misidentification than misspelling specimen names on prepared specimen quizzes. Results of this study support that short web-based insect identification exercises can improve insect identification performance. Also included is a discussion of how these results can be used in teaching and future research on biological identification.  相似文献   

Building on the success of DOAJ: Maintenance of DOAJ journals with BibPurls     

Rebecca Rae Culbertson 《期刊图书馆员》2017,73(3-4):291-295

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