1,720,956 research outputs found
The Modern U.S. High School Astronomy Course, its Status and Makeup, and the Effects of No Child Left Behind
No full textA 2007 nationwide mixed-methods survey of high school astronomy teachers reports on its current characteristics and its changes over intervening decades that included the introduction of standards and the No Child Left Behind Act (NCLB). Some changes found include section enrollments trending downward even while the total number of courses offered and attending students are actually increasing. The teacher gender gap has been dramatically reduced; most teachers come from geosciences and biosciences. 15% of them have never had an astronomy course. The majority of teachers say NCLB has had no direct effect, but 40% report indirect effects. These are mostly negative reactions to school-wide adequate yearly progress status: teacher redeployment, funding diversions, students tracked into the traditional three sciences, course cancellations, and teacher job loss. Some positive NCLB effects are increased math and literacy rigor and, paradoxically in some places, enrollment increases. A stereotypical picture of a high school astronomy course is developed noting some changes in the 22 years since the last study of the field
What It Would Take to Increase the Number of High School Astronomy Courses: A Survey of Principals and a Comparison to Astronomy Teachers, and a Prescription for Change
No full text"A survey to principals of high schools without astronomy points to the conditions needed to increase the number of high school astronomy courses and acceptable justifications for adding in a course. The former includes the need for more and better trained teachers, changing the perceptions of higher officials from local administrations to Federal-level legislators and education department officials, more funds, locally a need for students to show enough interest as well as a curriculum that helps with high stakes testing and Adequate Yearly Progress AYP scoring. Good reasons for having a course include helping increase options for students needing science electives or fourth year courses, and astronomy reinforces prior learning that helps raise AYP scores and increases student interest in science with material not taught in other courses. Some inhibiting influences include the timing of the course is usually after AYP testing, standards may not exist or limit new electives, and a dearth of astronomy teachers locally. Results of this study include a list of competing electives, typical procedures and a prescription for adding in courses.
The Modern U.S. High School Astronomy Course, Its Status and Makeup II: Additional Results
No full textA postal survey of high school astronomy teachers strongly confirms many results of an earlier electronic survey. Additional and new results include a measure of the level of inquiry (more structured inquiry and teacher-led) in the classroom as well as data showing that more emphasis is given to traditional topics than to contemporary astronomy research. The majority of students taking astronomy are college-bound, which offers support for the idea that astronomy might be considered as meeting college admissions requirements, even though it is not a laboratory or “core” science course. More usage of planetarium software is found than previously suspected, and more definitive usage rates for fixed and portable planetariums are found. By combining the two surveys’ results we obtain an even clearer picture of the current nature of high school astronomy courses
Going 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
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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