Robust fluidic connections to freestanding microfluidic hydrogels

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.     

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

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.     

Proceedings of the Eighth Annual Conference of the National Council for Jewish Education

Research about Jewish choral singers provides insight to a previously unstudied population of adult Jewish learners. Drawing on over 2,000 responses to the First-Ever Survey of Jewish Choral Activity, this article describes how Jewish choral experiences enable adults to deepen their involvement in Jewish life and learning. Survey results suggest that participants in Jewish choral groups resemble secular singers in terms of social, identity, and skill development, but derive additional benefits in terms of Jewish Peoplehood, Jewish Competence, Spirituality, and Jewish Community. Jewish choral activities particularly benefit singers under 45 by providing them opportunities to integrate their Jewish and musical lives.     

Social justice,capabilities and the quality of education in low income countries

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.     

Student performance prediction,risk analysis,and feedback based on context-bound cognitive skill scores

Education and Information Technologies - In recent times, Educational Data Mining and Learning Analytics have been abundantly used to model decision-making to improve teaching/learning ecosystems....