1,720,954 research outputs found
Pre-Processing Data Magnetometer Satelit LAPAN-A3
Full text linkSatelit LAPAN-A3 yang mengorbit pada ketinggian LEO (low Earth orbit) membawa beberapa muatan, termasuk di antaranya adalah HFGM (hybrid fluxgate magnetometer) yang digunakan untuk eksperimen pengukuran medan magnet Bumi di ketinggian atmosfer-atas/ionosfer. Magnetometer ini terdiri atas tiga buah sensor magnet identik yang dipasang di badan satelit. Ketiga sensor tersebut terpasang tegak lurus satu sama lain sehingga data medan magnet yang diukur merepresentasikan tiga komponen vektor medan magnet dalam kerangka acuan ortogonal lokal satelit. Data mentah HFGM tidak dapat langsung diterapkan untuk analisis karena arah sensor selalu mengalami perubahan mengikuti sikap satelit. Dalam makalah ini ditunjukkan metode pre-processing data HFGM satelit LAPAN-A3 yang diperlukan agar data hasil pengukuran HFGM dapat digunakan lebih jauh. Koreksi data mentah HFGM dilakukan dengan merotasikan data hasil pengukuran HFGM menuju model medan magnet. Model yang digunakan untuk rotasi adalah model IGRF dan model dipol. Hasil pengukuran HFGM yang telah dirotasi tersebut menunjukkan konsistensi dengan model medan magnet
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
EFEK MEDAN MAGNET ANTAR-PLANET ARAH UTARA-SELATAN TERHADAP MEDAN DIPOL GEOMAGNET
No full textDitinjau sebuah model analitik untuk membahas efek keberadaan medan magnet antar-planet pada daerah sekitar orbit bumi dimana medan magnet bumi ditinjau sebagai medan dengan konfigurasi dipol. Untuk memetakan medan dipol tanpa gangguan maupun dengan keberadaan medan magnet antar-planet telah diterapkan pendekatan menggunakan potensial Euler untuk merumuskan persamaan garis medan. Dalam makalah ini hanya ditinjau medan efek keberadaan komponen arah utara atau selatan medan magnet antar-planet terhadap medan dipol geomagnet. Keberadaan medan magnet antar-planet yang memiliki komponen arah utara meng-akibatkan terjadinya rekoneksi garis medan pada daerah kutub, sedangkan medan magnet antar-planet dengan komponen arah selatan mengakibatkan rekoneksi pada daerah siang dan malam di bidang ekuatorial. Peningkatan kekuatan medan magnet antar-planet secara umum mengakibatkan kompresi terhadap medan dipol geomagnet disertai oleh titik rekoneksi bergerak mendekati bumi. Hasil uji untuk kasus badai magnet yang terjadi pada bulan Juli, 2000 menunjukkan bahwa pada awal fase ekspansi badai magnet titik rekoneksi magnetik terjadi pada jarak 19.5RE. Selanjutnya selama fase ekspansi ketika kekuatan medan magnet mencapai nilai maksimum titik terdekat rekoneksi magnetik diukur dari pusat bumi pada jarak 8.05RE dan pada akhir badai magnet lokasi rekoneksi menjauhi dari bumi yaitu pada jarak 26.9RE
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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