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91.
Cultural Studies of Science Education - This paper dialogues with Lucy Avraamidou’s theoretical contribution Science Identity as a Landscape of Becoming: Rethinking Recognition and... 相似文献
92.
AbstractUndergraduate research occurs in a variety of mathematical fields and in diverse settings, but all mentors of undergraduates face a number of common considerations. This article is a brief guide to help faculty with various levels of previous mentoring experience lead students in research projects. In particular, we discuss the issues of picking appropriate research problems, recruiting students, setting expectations, moving research forward, and helping students to communicate their work. 相似文献
93.
David Van Kleeck Gerald Langford Jimmie Lundgren Hikaru Nakano Allison Jai O'Dell Trey Shelton 《Cataloging & classification quarterly》2016,54(7):452-467
This article presents a case study of quality management for print and electronic resource metadata, summarizing problems and solutions encountered by the Cataloging and Discovery Services Department in the George A. Smathers Libraries at the University of Florida. The authors discuss national, state, and local standards for cataloging, automated and manual record enhancements for data, user feedback, and statewide consortial factors. Findings show that adherence to standards, proactive cleanup of data via manual processes and automated tools, collaboration with vendors and stakeholders, and continual assessment of workflows are key to the management of biblio-graphic data quality in consortial academic libraries. 相似文献
94.
Betzalel Avitzur Walter C. Hahn Samy Iscovici 《Journal of The Franklin Institute》1975,299(5):339-358
A variety of mathematical models may be used to analyse plastic deformation during a metal-forming process. One of these methods—limit analysis—places the estimate of required power between an upper bound and a lower bound. The upper and lower bound analyses are designed so that the actual power or forming stress requirement is less than that predicted by the upper bound and greater than that predicted by the lower bound. Finding a lower upper bound and a higher lower bound reduces the uncertainty of the actual power requirement. Upper and lower bounds will permit the determination of such quantities as required forces, limitations on the process, optimal die design, flow patterns, and prediction and prevention of defects.Fundamental to the development of both upper bound and lower bound solutions is the division of the body into zones. For each of the zones there is written either a velocity field (upper bound) or a stress field (lower bound). A better choice of zones and fields brings the calculated values closer to actual values.In the present work, both upper and lower bound solutions are presented for axisymmetric flow through conical converging dies. For the upper bound triangular velocity fields have been solved and compared to previously published work on spherical velocity fields. It is found that each type provides a lower solution over a part of the range of process variables. A previously published lower bound solution for axisymmetric flow is refined. 相似文献
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96.
AbstractAcademic library spaces and services have widely broadened their missions away from providing only traditional research services and quiet spaces for study. Today, academic libraries are increasingly repurposing space and redesigning services to become the hub of innovation on university campuses. The literature explores entrepreneurship and academic libraries from many perspectives but with a common theme of the library as a leader in support of entrepreneurship initiatives on campus. 相似文献
97.
Corinne Hahn 《Educational Studies in Mathematics》1999,39(1-3):229-249
This article presents the results of a research study conducted with apprentices in order to examine the double hypothesis
that vocational training incorporating work placement gives the opportunity to construct authentic situations out of the everyday
practices of students and that these situations allow students to improve their understanding of mathematical problems. After
analysis of workplace situations had shown that the only mathematical concept used by apprentices was that of proportionality
applied to percentage calculations, we first analysed the way in which students at several levels handled this idea of percentage.
We then devised an experimental framework in order to help the apprentices to transfer their knowledge. RéSUMé: Cet article
présente les résultats d'une recherche menée avec des apprentis vendeurs afin de vérifier la double hypothèse qu'un enseignement
professionnel en alternance donne l'opportunité de construire des situations authentiques, à partir des pratiques quotidiennes
des élèves et que ces situations permettent aux élèves d'améliorer leur compréhension des problèmes mathématiques. L'analyse
des situations de travail ayant montré que le seul concept mathématique dont les apprentis ont l'usage est le concept de proportionnalité
appliqué aux calculs de pourcentage, nous avons d'abord analysé le comportement d'élèves de plusieurs niveaux face à cette
notion de pourcentage. Nous avons ensuite mis en place un dispositif expérimental afin d'aider les apprentis à transférer
leurs connaissances.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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100.
Allison Roda 《教育政策杂志》2017,32(3):303-321
This article examines the neoliberal influences on ‘Port City Schools’ (PCS) unique district-wide extended learning time (ELT) initiative. Despite the recent popularity of ELT in urban schools, there have been few qualitative studies that question how stakeholders make sense of ELT on the ground. This research fills that gap in the literature by exploring ELT programming across PCS’s choice and neighborhood K-8 schools. The interview and observation data reveal an inherent tension between ‘more time is better’ in the enrichment-filled choice schools and ‘less is more’ in the intervention-filled neighborhood schools. Findings illuminate the ways in which school choice, neighborhood segregation, and high stakes testing push the district to use ELT to boost test scores in the lower performing neighborhood schools, while the choice schools are given flexibility in ELT programming because they are meeting expectations for student success. Because neoliberalism fails to take into account the strong relationship between test scores and socio-economics and school choice and segregation, it leads to a cycle of inequality in which children in the choice schools receive a well-balanced curriculum and children in the neighborhood schools get test preparation during ELT. Fixing this system could fix inequalities in ELT programming across all schools. 相似文献