1,720,971 research outputs found
Towards a Learning Progression in Quantum Mechanics
No full textTeaching of Quantum Mechanics (QM) has been only recently introduced by curriculum reforms in the last year of secondary school. Hence, little is known about how students
progress in their knowledge about QM from secondary to university level. To know in more detail students’ learning pathways in making sense of basic concepts of QM may help construct a more effective teaching framework and develop reliable assessment tasks. This study builds on a learning progression approach to investigate students’ understanding of basic QM concepts from secondary school to university level. Initial learning progressions around three big ideas in QM were constructed taking into account research findings, school textbooks, and physics teachers’ views about QM. The big ideas were atom and electrons; measurement; wave function. To validate the progressions, we developed a multiple choice questionnaire, submitted to 330 students. Rasch analysis was used to analyse students’ responses. Findings led to a revision of the hypothesized learning progressions, which may be useful to design research- based QM teaching sequences from secondary to university level
Teachers' perceptions of isolation and educational policies. insights from a four year empirical study
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Investigating science teachers’ transformations when implementing inquiry-based teaching-learning sequences
No full textIn this study we aimed to investigate the most transformed/accepted aspects of scientific inquiry when it is implemented in classroom practice. Thirteen secondary school teachers participated in the study. The teachers were first involved in a professional development (PD) course aimed at familiarizing them with inquiry principles, using seven teaching-learning sequences (TLSs) as training contexts. Then, teachers implemented one TLS in their classrooms for at least 5 h. A knowledge transfer framework, Adaption and Re-Invention Model, was used to investigate teachers’ transfer of TLS in classroom practice. In particular, core and non-core elements of the TLSs were identified: core elements are essential features of inquiry teaching that should not be changed while implementing a TLS since they characterize it in a unique way. Non-core elements concern classroom management and activities timing and can be changed to fit the TLS into the specific educational context. Collected data have been audio/video recordings. Results show that most accepted aspects of inquiry teaching are related to data collection, support to students, activities timing, and homework tasks. Moreover, most teachers acted as resource persons and valued classroom discussions. Overall, our findings may usefully inform PD courses by providing evidence of teachers’ enactment of inquiry in their practice
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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