1,720,972 research outputs found
Analisis Perkembangan Koseptual Siswa dalam Memahami Konsep Tinggi Segitiga
Full text linkProses pembentukan pengetahuan yang dilakukan oleh siswa didasarkan pada pengetahuan awal yang mereka miliki. Pengetahuan awal yang mereka miliki sangat bervariasi, bisa mendukung atau menjadi penghambat dalam memahami konsep baru. Penelitian ini bertujuan untuk mendeskripsikan perkembangan konseptual siswa dalam memahami konsep tinggi segitiga dengan menggunakan pendekatan perubahan konseptual model Posner. Metode penelitian yang digunakan dalam penelitian ini adalah deskriptif kualitatif dengan data yang dikumpulkan meliputi lembar kuesioner dan transkrip wawancara. Hasil dari penelitian ini menunjukkan bahwa perkembangan konseptual siswa bisa dikategorikan menjadi dua jenis: pertama, siswa tidak memiliki konseptual awal yang benar. Melalui diskusi saat wawancara secara bertahap dan berulang-ulang pemahaman siswa menuju lebih sempurna. Status konseptual siswa ini berada pada kondisi plausible, intelligible, dan dissatisfaction. Kedua, siswa yang telah memiliki konseptual awal yang benar tentang tinggi segitiga, tapi belum sempurna. Status konseptual siswa ini berada pada kondisi plausible, dan fruitful
Valsiner’s Zone Theory As The Teachers’ Zone Of Proximal Development
No full textThe research, develop and validate the theory and development of teacher educators of mathematics learning will lead to a better understanding of how expertise is developed in carrying out professional duties. In doing so, will provide evidence to inform discussions about what constitutes best practice in mathematics teacher education. The concept of Zone Proximal Development (ZPD) which was developed by the Soviet psychologist Lev Vygotsky and social constructivist (1896-1934) provides an interesting metaphor for designing teaching and learning to analyze, this poses a real challenge when it is practiced. Valsiner has broadened its interpretation of the concept of the ZPD Vygotsky to combine the social setting and the objectives and actions of participants. The theory proposes the existence of two additional zones, Zone of Free Movement (ZFM) and Zone of Promotion Action (ZPA). ZFM is a binding agent that is given by adults to limit access to its territory the child, object, or way of acting on those objects. While the ZPA is what adults are promoting, with no obligation for the child to receive what is being promoted. Further development of the zone when interpreting the ZPD of practitioner Valsiner found the presence of an Illusionary Zone (IZ). The presence or absence of IZ in practitioner provide insights for the development of potential teachers. Exploration in the field found a lack of connection to the conceptual understanding of procedural understanding, this situation makes IZ suspected.
Key Words: practitioner, ZPD, ZFM, ZPA, I
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
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
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