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Tahapan Berpikir Mahasiswa dalam Mengonstruksi Bukti Matematis
Get PDFAbstrak
Mengonstruksi bukti matematis merupkan bentuk khusus dari pemecahan masalah sehingga perlu proses berpikir yang sedikit berbeda. Penelitian ini bertujuan untuk merumuskan tahapan berpikir mahasiswa dalam menelesaikan masalah pembuktian. Metoda penelitian yang digunakan adalah metoda kualitatif. Pengumpulan data dilakukan dengan memberikan satu masalah pembuktian kepada 10 orang mahasiswa. Mahasiswa diminta melakukan think aloud ketika sedang berupaya mengonstruksi bukti. Semua aktifitas di rekap dengan camera video. Hasil kerja yang dianalisis adalah yang hasil konstruksi bukti yang valid. Temuan dari penelitian ini adalah ada 5 tahapan berpikir mahasiswa ketika berupaya menghasilkan konstruksi bukti yang valid, yaitu (1) memahami masalah pembuktian, (2) membuat koneksi dan menyeleksi, (3) Menemukan ide utama,(4) merangkai bukti dan menimpulkan, dan (5) melakukan refleksi.
Kata kunci: konstruksi bukti, proses berpikir, fungsi komposisi.
Abstract
Constructing mathematical proofs is a special case of problem solving so it needs a slightly different thinking process. This study aims to formulate the stages of student thinking in solving the problem of proof. The research method used is qualitative method. Data collection was done by giving two models of proof problem to 17 students. Students were asked to think aloud while trying to construct of proof. All activities were recaps with video camera. The results of the analyzed work were those of valid proof construction. The findings of this study were five stages of student thinking when attempt to construct a valid construction proof, namely (1) understanding the problem of proof, (2) making connections and selecting, (3) finding the main idea, (4) assembling evidence and concluding, and (5) doing reflection.
Keywords: Constructing proof, thinking process, composition functio
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
CHARACTERISTICS REPRESENTATION OF EQUATION MATHEMATICS PROBLEMS SOLVING IN STUDENTS
Get PDFPenelitian ini bertujuan mendeskripsikan karakteristik representatif persamaan pada siswa kelas VII dalam menyelesaikan masalah matematika. Subjek penelitian adalah 4 orang siswa kelas VII SMP Negeri 14 Padang. Metode penelitian yang digunakan adalah metoda penelitian kualitatif. Data kemampuan representatif matematis siswa diperoleh dengan meminta siswa mengerjakan satu buah soal matematika. Hasil kerja siswa dianalisis dengan memperhatikan teorema dan algoritma yang dituliskan siswa dan dengan dukungan data hasil wawancara. Wawancara dilakukan mengonfirmasi hasil kerja siswa. Kesimpulan dari penelitian ini tidak ada representasi persamaan siswa yang benar dan terdapat dua bentuk karakteristik representasi persamaan siswa, yaitu benar dan tidak sesuai dan tidak benar tidak sesuai.
Kata kunci: Representasi matematis, masalah matematika, Bilangan bula
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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