Factors affecting the professional characteristics of teacher educators in Israel and in the USA: a comparison of two models     

Leah Shagrir 《Compare》2015,45(2):206-225

The objective of this research study was to identify the factors affecting the professional characteristics of teacher educators by comparing two models of teacher education. The research findings revealed four major focal points that have an impact on professional characteristics: the operational model adopted by the institution where teacher educators work; the breadth and depth of teacher educators’ research and scholarship and the degree to which such scholarship is required as part of the assessment criteria; the cooperation between the training institution and the practical field (i.e., the schools where the students do their practice teaching); and the informal relationships between teacher educators and their students. The novelty of the study resides in the fact that these points affect teacher educators’ professional characteristics and that focusing on these characteristics facilitates a comprehensive view of methods, tools and directions that may expedite the professional development of teacher educators.  相似文献   

Two-dimensional spatial manipulation of microparticles in continuous flows in acoustofluidic systems     

Lu Gao  C. Wyatt Shields  IV  Leah M. Johnson  Steven W. Graves  Benjamin B. Yellen  Gabriel P. López 《Biomicrofluidics》2015,9(1)

We report a modeling and experimental study of techniques to acoustically focus particles flowing through a microfluidic channel. Our theoretical model differs from prior works in that we solve an approximate 2-D wave transmission model that accounts for wave propagation in both the solid and fluid phases. Our simulations indicate that particles can be effectively focused at driving frequencies as high as 10% off of the resonant condition. This conclusion is supported by experiments on the acoustic focusing of particles in nearly square microchannels, which are studied for different flow rates, driving frequencies and placements of the lead zirconate titanate transducer, either underneath the microchannel or underneath a parallel trough. The relative acoustic potential energy and the resultant velocity fields for particles with positive acoustic contrast coefficients are estimated in the 2-D limit. Confocal microscopy was used to observe the spatial distribution of the flowing microparticles in three dimensions. Through these studies, we show that a single driving frequency from a single piezoelectric actuator can induce the 2-D concentration of particles in a microchannel with a nearly square cross section, and we correlate these behaviors with theoretical predictions. We also show that it is possible to control the extent of focusing of the microparticles, and that it is possible to decouple the focusing of microparticles in the vertical direction from the lateral direction in rectangular channels with anisotropic cross sections. This study provides guidelines to design and operate microchip-based acoustofluidic devices for precise control over the spatial arrangement of microparticles for applications such as flow cytometry and cellular sorting.  相似文献   

Children’s Daily Routines During Kindergarten Transition     

Leah K. Wildenger  Laura Lee McIntyre  Barbara H. Fiese  Tanya L. Eckert 《Early Childhood Education Journal》2008,36(1):69-74

Routines are an important feature of family life and functioning in families with young children. Common daily routines such as dinnertime, bedtime, and waking activities are powerful organizers of family behavior and may be instrumental to children and families during times of transition, such as elementary school entry. Daily routines were examined in 132 families with children entering kindergarten. Although the majority of families reported regular daily routines for their children, parents anticipated that their child’s daily routines would substantially shift upon kindergarten entry, including changes in children’s sleep habits. Significant changes in child and family routines have been implicated in adjustment difficulties during kindergarten transition. Results of this investigation are discussed in terms of aligning family daily routines with kindergarten expectations. Furthermore, educational professionals in early childhood education and elementary school can partner with families to promote seamless kindergarten transitions for all children.  相似文献   

PDA power at the bedside     

Wilson P  Billingsley R  Pellegrino L 《Medical reference services quarterly》2005,24(2):1-9

George Washington University's Himmelfarb Health Sciences Library was investigating adding PDA resources to the collection when a medical education grant was received. Funds were used for a pilot project to compare PDA use by third-year medical students (MSIII), fourth-year medical students (MSIV), second-year physician assistant (PAII) students, and residents in the clinical setting. The PDA Committee evaluated various titles by the following criteria: both Palm and PocketPC operating systems compatibility, ease of use, depth of information, product cost, and a wide target audience. Griffith's 5 Minute Clinical Consult by Skyscape was selected. Library registration was required to receive the software and PDA downloading instructions. A short, Web-based questionnaire was developed to evaluate the product's use in the clinical setting. A low response rate of 74 questionnaires (23% of participants) was received and analyzed in March 2004. As additional funding becomes available, PDA software will be seriously considered as additions to the collection.  相似文献   

Communicating openness in deliberation     

Leah Sprain  Sonia Ivancic 《Communication monographs》2017,84(2):241-257

Normative and practical accounts of deliberative democracy cite open-mindedness as a key feature of good deliberation. Yet scholars have often focused on attitude change or self-report measures to empirically demonstrate openness. This paper draws on grounded practical theory to understand openness as a discursive stance in public deliberation. Openness is used to address four practical problems encountered in deliberation: disagreement, opinion formation, dysfunctional community problem-solving, and deliberative sense making. Indicating openness and expressing attitude change are different discursive practices. Expecting participants to refrain from forming opinions before deliberation may be naïve. Instead, participants’ eagerness to make sense of deliberation by invoking shared understanding and openness should be used to develop meta-consensus.  相似文献   

Children’s attitudes toward small computers: a preliminary study     

Frederick Williams  Joseph Coulombe  Leah Lievrouw 《Educational technology research and development : ETR & D》1983,31(1):3-7

While it has been established that children have positive attitudes toward the use of computers when used in computer-assisted instruction, little is known about children’s attitudes toward small“home” or“personal” computers. Results of this study indicate that children have multidimensional attitudes toward small computers, their interaction with these computers, and ease of use.  相似文献   

Collaborating with colleagues for the sake of academic and professional development in higher education     

Leah Shagrir 《International Journal for Academic Development》2017,22(4):331-342

Abstract

This research examines how faculty members in higher education collaborate with colleagues, their collaborative professional work, the nature of these collaborations, and the benefits they get from it. Research findings show that collaborations are perceived as one of the important components of academic and professional development. The findings indicate issues about the characteristics and nature of collaborations as well as about colleagues with whom faculty members prefer to collaborate, the ways in which they collaborate, the advantages of collaborations, and the important role that academic leaders and institutions play in encouraging collaborations.  相似文献   

Is peer review an appropriate form of assessment in a MOOC? Student participation and performance in formative peer review     

Sarah E.M. Meek  Louise Blakemore  Leah Marks 《Assessment & Evaluation in Higher Education》2017,42(6):1000-1013

Many aspects of higher education must be reconceptualised for massive open online courses (MOOCs). Formative and summative assessment of qualitative work in particular requires novel approaches to cope with the numbers involved. Peer review has been proposed as one solution, and has been widely adopted by major MOOC providers, but there is currently little evidence about whether it is appropriate or under what conditions. Here, we examine student participation, performance and opinions of a peer review task in a biomedical science MOOC. We evaluate data from approximately 200 student topic summaries and 300 qualitative peer reviews of those summaries, and compare these to student demographic data (gender, age, employment status, education, national language) and to performance in multiple choice tests. We show that higher performance in the written topic summary correlated with both higher participation in the peer review task and with writing higher quality peer reviews. Qualitative analysis of student comments revealed that student opinion on the usefulness of the peer review task was mixed: some strongly believed it benefitted their learning, while others did not find it useful or did not participate. We suggest instructional design strategies to improve student participation and increase learning gain from peer review in the MOOC context.  相似文献   

Reliability and Preliminary Use of a Rubric to Assess Pre-Kindergarten Teachers’ Video Uses     

Bridget A. Walsh  Heidi Cromer  Daniel J. Weigel  Leah Sanders 《Early Childhood Education Journal》2013,41(5):325-337

The presence and use of new technologies in early childhood settings are rapidly increasing. One technology tool used in early childhood settings is monthly DVD classroom newsletters, yet there is a lack of assessments to support pre-kindergarten teachers’ uses of such DVD newsletter technology—in general and in specific. The present study helps to fill this gap by developing and testing a revised rubric to evaluate the quality of monthly DVD classroom newsletters. Results indicate that the revised Monthly DVD Classroom Newsletter-Rubric exhibited good overall reliability. We suggest that the use of a rubric to assess pre-kindergarten teacher-created monthly DVD classroom newsletters supports teachers’ decision making about technology uses and professional development.  相似文献   

The Impact of a Summer Bridge Program on Nontraditional Student Development: Teacher Care Matters     

Leah D. Hoops  Lindsay Kutrybala 《Community College Journal of Research & Practice》2013,37(11):1039-1051

Summer bridge programs (SBPs) improve the likelihood that students will succeed in postsecondary education. The majority of SBP research has focused on programs designed for underprepared high school graduates rather than nontraditional populations (i.e., older, [General Education Diploma] GED-holders, parents, etc.). This study sought to address this literature gap by taking a qualitative approach to discover how nontraditional students felt they had developed, both academically and personally, during their respective experiences with a technical and vocational SBP. Results showed that students reported growing personally and affectively (64%) more than academically (36%), and they attributed the majority of growth to instructors (77%) rather than program content (23%). Findings are discussed in terms of SBP curriculum and instructional practices that may promote nontraditional students’ college preparation and persistence to award attainment.  相似文献