1,720,961 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Teaching and learning quadratic equations through a problem-dentred approach : a case of grade 11 classroom in Capricorn District of Limpopo Province
Full text linkMEd (Mathematics), North-West University, Mafikeng CampusWorldwide the teaching and learning of mathematics pose a great challenge to mathematics teachers as learners ' performance in the subject leave much to be desired. This is particularly the case in South Africa, where there has been a great disparity in the development of teachers in the past. Extensive research has shown that many teachers in South Africa are under-qualified, especially in the teaching of mathematics at secondary schools. The performance of mathematics and science learners is particularly low in South Africa. The study investigated the benefits of using problem-centred approach in the teaching and learning of quadratic equations in grade-11 classroom using a mixed method approach. Learners were given learning activities on quadratic problems to carry out as part of their normal classroom mathematics' lessons. Data were
collected in three stages: pre-intervention, which involved a quantitative approach, pretest and qualitative, questionnaire; during intervention, which included a qualitative approach, video recording and questioning, and learners' journals; post-intervention; quantitative; post-test and qualitative; questionnaire. The responses of the learners were analysed during each of the above stages. The scripts were reviewed based on four problem-solving stages adopted from George Polya (1945) viz.: understanding the problem, devising the plan, carrying out the plan, and looking back. It became evident from the findings of the study that before the intervention,
learners had no understanding of problem-solving abilities and they were able to develop these abilities during the intervention and after the intervention, the learners have developed the necessary skills needed in problem-solving in learning quadratic equations. A total of 20 learners participated in the study from a secondary school in the Capricorn District of Limpopo Province. The study adhered to ethical principles and applied several techniques to enhance the validity/trustworthiness of the findings. The study found that learners benefitted tremendously from the problem-centred approach of teaching and learning. To this end, various recommendations were made. Recommendations for further study were also highlighted and the
limitations of this research pointed out.Master
TEACHERS AND LEARNERS’ PERCEPTIONS ABOUT TEACHER-OUTSOURCING AS A COMPLIMENTARY STRATEGY IN GRADE 12 MATHEMATICS CLASSROOMS
Full text linkInstitute for Science and Technology Education (ISTE
Strategies used by Grade 6 learners when solving mathematics story problems
Full text linkThe study reported in this article sought to investigate factors that affect learners' academic achievement in Grade 6 mathematics word problems. Furthermore, the article discusses errors made by the learners when they solve word problems. The study used document analysis in a form of learners' written work (or test) in order to collect quantitative data. The results obtained from a test consisting of six word problem tasks showed that learners struggled with realistic considerations of problem statement as well as with making meaning of situations embedded in the task. In brief, reading instructions aloud repeatedly and explaining key mathematical concepts have emerged as key strategies in understanding and solving word problems in mathematics. The study therefore argues that it does not matter how complex or easy a word problem appears to be; what is important is the ability of the brain to connect the mathematics embedded in a problem statement with real-life situations in order to make meaning of the world
Variations on the Author
Full text link“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
Full text linkWe 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
Full text linkWe 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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