1,720,959 research outputs found
KAJIAN ETNOMATEMATIKA PADA GORGA (ORNAMEN RUMAH ADAT BATAK TOBA)
No full textPenelitian ini bertujuan untuk mengkaji etnomatematika yang terdapat pada ukiran tradisional suku Batak Toba yang disebut gorga. Penelitian ini merupakan penelitian kualitatif menggunakan metode etnografi. Wilayah penelitian dilakukan di dua kabupaten yaitu Kabupaten Tobasa dan Kabupaten Samosir. Pengumpulan data dilakukan melalui observasi, wawancara dan analisis dokumentasi. Kegiatan wawancara melibatkan para pengukir gorga, tokoh adat, serta guru matematika. Temuan yang diperoleh dalam penelitian ini antara lain: 1) Terdapat 15 jenis motif gorga yang lazim ditemukan pada rumah adat Batak Toba. 2) Cara mengukir gorga secara umum dilakukan melalui 5 tahapan antara lain: a) penentuan bidang gambar, b) membuat mal, c) menggambar motif menggunakan mal pada bidang gambar, d) mengukir, dan e) pewarnaan. 3) Terdapat 12 aspek matematis yang terkandung dalam proses mengukir, maupun gambar motif gorga Batak Toba. Aspek tersebut antara lain: a) pengukuran, b) operasi hitung, c) kemampuan spasial, d) simetri, e) transformasi geometri, f) partisi Riemann, g) barisan aritmetika, h) deret Fibonacci, i) golden ratio, j) himpunan, k) grup, l) frieze group. 4) Terdapat aspek pendidikan yang ditemukan pada proses pengajaran gorga secara turun-temurun diantaranya: a) belajar mengukir dengan minat, b) pembelajaran berdasarkan masalah, c) pembelajaran langsung, d) Penggunaan storytelling (teknik bercerita). 5) Hasil kajian etnomatematika pada ukiran gorga sangat berpotensi untuk diintegrasikan ke dalam kurikulum pendidikan Matematika mulai dari jenjang sekolah dasar hingga perguruan tinggi. 6) Kemampuan matematis yang terkandung dalam ukiran gorga tidak mempengaruhi kehidupan masyarakat Batak Toba. Penyebabnya pengetahuan tentang mengukir gorga hanya dimiliki oleh pengukir saja dan tidak disebarluaskan secara masif kepada seluruh masyarakat. Beberapa hal yang menghambat penyebarluasan kemampuan mengukir gorga di kalangan masyarakat Batak diantaranya: a) penyebaran yang terbatas, b) penjajahan serta, c) penyebaran agama Kristen
Exploring Ethnomathematics in Batak Toba Carvings for Locally-based Mathematics Teaching Material
No full textSebagai salah satu ornamen adat suku Batak Toba, “gorga” memiliki makna
filosofis dan berfungsi untuk memperindah dekorasi rumah adat. Motif gorga
memiliki ciri khas tersendiri, dengan pola yang tersusun rapat dan desain yang
simetris. Hal ini menunjukkan adanya aspek matematis dalam pola ukiran
gorga tersebut. Penelitian ini bertujuan untuk menganalisis kesimetrian yang
terdapat pada motif gorga yang dapat dimanfaatkan sebagai bahan ajar
matematika berbasis lokal. Kajian dilakukan dengan mengeksplorasi berbagai
motif gorga dan menganalisis jenis simetrinya. Penelitian ini menggunakan
pendekatan penelitian etnografi. Pengumpulan data dilakukan dengan
mengamati bangunan yang berhiaskan motif gorga, mempelajari literatur, dan
melakukan wawancara dengan pemahat gorga. Analisis data kualitatif dapat
dimulai dengan reduksi data, penyajian data, penarikan kesimpulan dan
verifikasi. Hasil penelitian mengungkapkan adanya tujuh jenis simetri yang
diperoleh dari semua motif gorga. Jenis-jenis simetri ini meliputi simetri
translasi, simetri luncuran refleksi, simetri vertikal, simetri rotasi 180°, simetri
vertikal dan rotasi 180°, simetri horizontal, dan simetri vertikal dan horizontal. Kata Kunci :
Simetri, Etnomatematika, Ukiran Tradisional,
Gorga, Batak Toba. / As one of the traditional ornaments of the Batak Toba tribe, "gorga" carries philosophical meaning and serves to
embellish the decoration of traditional houses. The gorga motif has its own distinctive characteristics, with closely
arranged patterns and symmetrical designs. This indicates the presence of mathematical aspects within these
carved gorga patterns. This research aims to analyze the symmetries embedded in the gorga motifs that can be
utilized as locally-based mathematics teaching material. The study is conducted by exploring various gorga motifs
and analyzing their types of symmetry. The research is employing an ethnographic research approach. Data is
collected through observing buildings adorned with gorga motifs, studying literature, and conducting interviews with
gorga carvers. Qualitative data analysis can be started with data reduction, data presentation, drawing conclusions
and verification. The research findings reveal the existence of seven types of symmetry obtained from all gorga
motifs. These symmetry types include translation symmetry, glide reflect symmetry, vertical symmetry, rotation 180°
symmetry, vertical and rotation 180° symmetry, horizontal symmetry, and vertical and horizontal symmetry. Keywords:
Symmetry, Ethnomathematics; Traditional
Carvings, Gorga, Batak Tob
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
No full textWe 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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