Computer-Based Classification of Preservice Physics Teachers’ Written Reflections     

Wulff  Peter  Buschhüter  David  Westphal  Andrea  Nowak  Anna  Becker  Lisa  Robalino  Hugo  Stede  Manfred  Borowski  Andreas 《Journal of Science Education and Technology》2021,30(1):1-15

Journal of Science Education and Technology - Reflecting in written form on one’s teaching enactments has been considered a facilitator for teachers’ professional growth in...  相似文献   

Rethinking Assessment Design: Evidence-Informed Strategies to Boost Educational Impact in the Anatomical Sciences     

Anna T. Ryan  Tim J. Wilkinson 《Anatomical sciences education》2021,14(3):361-367

University assessment is in the midst of transformation. Assessments are no longer designed solely to determine that students can remember and regurgitate lecture content, nor in order to rank students to aid with some future selection process. Instead, assessments are expected to drive, support, and enhance learning and to contribute to student self-assessment and development of skills and attributes for a lifetime of learning. While traditional purposes of certifying achievement and determining readiness to progress remain important, these new expectations for assessment can create tensions in assessment design, selection, and deployment. With the recognition of these tensions, three contemporary approaches to assessment in medical education are described. These approaches include careful consideration of the educational impact of assessment—before, during (test or recall enhanced learning) and after assessments; development of student (and staff) assessment literacy; and planning of cohesive systems of assessment (with a range of assessment tools) designed to assess the various competencies demanded of future graduates. These approaches purposefully straddle the cross purposes of assessment in modern health professions education. The implications of these models are explored within the context of medical education and then linked with contemporary work in the anatomical sciences in order to highlight current synergies and potential future innovations when using evidence-informed strategies to boost the educational impact of assessments.  相似文献   

The tail end of the moth: clarifying species boundaries     

Johnson K 《Endeavour》2004,28(4):161-166

The search by naturalists for good characters upon which to base both classifications and determinations of species led some 19th century entomologists to put their faith in insect genitalia as a criteria by which they could differentiate between and classify forms. Karl Jordan was such an entomologist, who turned to these tiny structures as an aid to his work as a museum curator to identify, describe and classify moths and butterflies. In his writings on the subject he also demonstrated how the attempts of systematists to order the diversity of nature had profound implications for the efforts of biologists to explain the origin of that diversity. However, Jordan's plan of how to do systematics well required much more than convincing biologists of the importance of museum work. It also depended on refining the priorities of a natural history community that worked according to diverse means, priorities and methods during a tumultuous century.  相似文献   

Effectiveness of citrate buffer-fluoride mixture in Terumo tubes as an inhibitor of in vitro glycolysis     

Graziella Bonetti  Mariarosa Carta  Martina Montagnana  Claudia Lo Cascio  Anna Rita Bonfigli  Andrea Mosca  Roberto Testa 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2016,26(1):68-76

Introduction

Glycolysis affects glucose determination in vitro. The placement of sample tubes in ice-water slurry with plasma separation within 30 minutes is recommended, or alternatively the use of a glycolysis inhibitor. The aim of our two-steps study was to evaluate which Terumo tube is best for glucose determination in routine clinical setting.

Materials and methods

In the first study, blood from 100 volunteers was collected into lithium heparin (LH), NaF/Na heparin (FH) and NaF/citrate buffer/Na₂EDTA (FC-Mixture) tubes. LH sample was treated as recommended and considered as reference, while FH and FC-Mixture samples were aliquoted, maintained at room temperature (RT) for 1, 2 and 4 hours; centrifuged and plasma analysed in triplicate. In the second study, samples from 375 volunteers were collected in LH, FH and FC-Mixture tubes and held at RT before centrifugation from 10 to 340 minutes, depending on each laboratory practice. Samples were analysed in one analytical run.

Results

In the first study, FH glucose concentrations were 5.15 ± 0.66 mmol/L, 5.05 ± 0.65 mmol/L and 5.00 ± 0.65 mmol/L (P < 0.001) in tubes stored at RT for 1, 2 and 4 hours, respectively. Mean biases in all time points exceeded the analytical goal for desirable bias based on biological variation criteria. FC-Mixture glucose concentrations were 5.48 ± 0.65 mmol/L, 5.46 ± 0.6 mmol/L and 5.46 ± 0.64 mmol/L in tubes stored at RT for 1, 2 and 4 hours, respectively. Mean biases for FC-Mixture glucose in all time points reached optimal analytical goals. In the second study, the biases for LH and FH glucose compared to reference FC-Mixture glucose exceeded the preset analytical goals, regardless of the blood collection to centrifugation time interval.

Conclusions

FC-mixture tubes glucose concentrations were preserved up to 4h storage at RT. We confirmed that NaF alone does not allow immediate glycolysis inhibition in real life pre-centrifugation storage conditions (up to 340 minutes). FC-Mixture should be used exclusively for glucose determination in laboratories unable to implement the recommended blood samples’ treatment.Key words: glucose, pre-analytical phase, sodium fluoride, citrate acidification, stability  相似文献   

浙江省主要经济作物的生产潜力评估     

高安娜  屠国潮 《科技通报》1991,7(3):121-126

本文采用定性和定量相结合的方法,从扩大面积、提高单产、改进品质、开拓市场和科技进步等方面评估了我省主要经济作物棉花、黄红麻、油菜、糖蔗、茶叶、蚕桑和柑桔的生产潜力,提出了1995年和2000年这些经济作物的生产目标。并根据省情,从政策、投入、经营、科技等方面提出实现这些目标应采取的对策措施。  相似文献   

UNIVERSITY TEACHERS’ CONCEPTIONS OF GOOD TEACHING IN THE UNITS OF HIGH-QUALITY EDUCATION     

Anna  Sari 《Studies in Educational Evaluation》2007,33(3-4):355-370

This article explores teachers in the units of high quality education in Finland. It focuses on three questions. First, What are conceptions of good teaching of teachers teaching in the quality units? Second, What do they consider important in their teaching? And third, What is the relation between teachers’ conceptions and the criteria used in the quality unit selection? Findings reveal that teachers’ conceptions of good teaching are in line with the theories of good teaching and with the main selection criteria of the quality units in Finland. Still, the role of appropriate assessment is not emphasised by the teachers.  相似文献   

Creativity and performativity in teaching and learning: Tensions,dilemmas, constraints,accommodations and synthesis   总被引：3，自引：0，他引：3  

Anna Craft  Bob Jeffrey 《British Educational Research Journal》2008,34(5):577-584

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Too Much Familiarity! The Developmental Path of the Fluency Heuristic in Children     

Marie Geurten  Sylvie Willems  Marianne Lloyd 《Child development》2021,92(3):919-936

We tested whether changes in attribution processes could account for the developmental differences observed in how children’s use fluency to guide their memory decisions. Children ranging in age from 4 to 9 years studied a list of familiar or unfamiliar cartoon characters. In Experiment 1 (n = 84), participants completed a recognition test during which the perceptual fluency of some items was enhanced using a prime. In Experiment 2 (n = 96), participants completed a source recollection judgment on their recognition decisions. Primed items were recognized at a higher rate than unprimed items. However, while young children rely on fluency for all items, older children use fluency only for unfamiliar items. This pattern came together with a reduction in familiarity-based—but not recollection-based—memory responses.  相似文献   

Four different assessment practices: how university teachers handle the field of tension between professional responsibility and professional accountability     

Jedemark  Marie  Londos  Mikael 《Higher Education》2021,81(6):1293-1309

Higher Education - Various efforts have been made in higher education in Sweden to meet the demand for more transparent governance and increased efficiency and quality. The purpose of this article...  相似文献   

Trajectories of perinatal depressive symptoms in the context of the COVID-19 pandemic     

Hanna C. Gustafsson  Anna S. Young  Olivia Doyle  Bonnie J. Nagel  Kristen Mackiewicz Seghete  Joel T. Nigg  Elinor L. Sullivan  Alice M. Graham 《Child development》2021,92(5):e749-e763

This study sought to advance understanding of the potential long-term consequences of the COVID-19 pandemic for child development by characterizing trajectories of maternal perinatal depression, a common and significant risk factor for adverse child outcomes. Data came from 393 women (86% White, 8% Latina; mean age = 33.51 years) recruited during pregnancy (n = 247; mean gestational age = 22.94 weeks) or during the first year postpartum (n = 146; mean child age = 4.50 months; 55% female). Rates of depression appear elevated, relative to published reports and to a pre-pandemic comparison group (N = 155). This study also provides evidence for subgroups of individuals who differ in their depressive symptom trajectories over the perinatal period. Subgroup membership was related to differences in maternal social support, but not to child birth outcomes.  相似文献