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Pola Penyebaran Nilai Tahanan Jenis Lapisan Batuan Gunung Api Purba Sapaya di DAS Jene???lata
No full textAbstrak. Pen3elitian peranan geolistrik tahanan jenis untuk mengetahui pola penyebaran vertikal nilai tahanan jenis lapisan batuan di Daerah Aliran Sungai (DAS) Jenelata dilatarbelakangi oleh kondisi geologi di daerah tersebut. Geologi daerah tersebut didomonasi batuan plutonik dan rempah-rempah gunungapi. DAS Jenelata merupakan tempat aliran material letusan gunungapi purba Sapaya. Tahanan jenis material dari beberapa jenis batuan yang mengendap ini perlu diketahui dengan menggunakan kajian geofisika-geolistrik. Metode geofisika tahanan jenis konfigurasi Wenner yang digunakan dalam penelitian ini bertujuan untuk memetakan secara vertikal lapisan batuan di DAS Jenelata. Hasil yang diperoleh dari 4 lintasan dengan masing-masing panjang 150 meter menunjukkan nilai tahanan jenis rata-rata di DAS Jenelata sekitar 5-2000 ???m. Nilai tahanan jenis ini dapat dikelompokkan menjadi 2 bagian yaitu 5-300 ???m dan 301-2000 ???m. Hasil yang terakhir ini menunjukkan nilai tahanan jenis batuan plutonik. Di sekitar hilir DAS Jenelata nilai tahanan jenis relatif rendah, yaitu di bawah 300 ???m. Nilai ini menendakan bahwa di hilir DAS Jenelata mengendap batuan yang telah mengalami pelapukan
Karakteristik Batuan dan Sebaran Mineral Bawah Permukaan di Sub DAS Jenelata Kabupaten Gowa
No full textABSTRAK\ud
Penelitian peranan geolistrik tahanan jenis untuk mengetahui pola penyebaran vertikal nilai tahanan jenis lapisan batuan di Daerah Aliran Sungai (DAS) Jenelata dilatarbelakangi oleh kondisi geologi di daerah tersebut. Geologi daerah tersebut didominasi batuan plutonik dan rempah-rempah gunung api. DAS Jenelata merupakan tempat aliran material letusan gunungapi purba Sapaya. Tahanan jenis material dari beberapa jenis batuan yang mengendap ini perlu diketahui dengan menggunakan kajian geofisika-geolistrik. Metode geolistrik tahanan jenis Konfigurasi Wenner yang digunakan dalam penelitian ini bertujuan untuk memetakan secara vertikal lapisan batuan di hulu dan hilir DAS Jenelata. Hasil yang diperoleh dari 4 lintasan dengan masing-masing panjang 150 meter menunjukkan nilai tahanan jenis rata-rata di DAS Jenelata sekitar 5 ??? 2000 ???m. Nilai tahanan jenis ini dapat dikelompokkan menjadi dua bagian yaitu 5 ??? 300 ???m dan 301 ??? 2000 ???m, hasil yang terakhir ini menunjukkan nilai tahanan jenis batuan plutonik. Di sekitar hilir DAS Jenelata nilai tahanan jenis relatif rendah, yaitu dibawah 300 ???m. Nilai ini menandakan bahwa di hilir DAS mengendap batuan yang telah mengalami pelapukan.\ud
Kata kunci : Gunungapi Sapaya, Tahanan Jenis, Batuan Plutonik
Model of Vertical Resistivity Distribution of Rock Layers in Jeneberang Watershed
Get PDFDaerah Aliran Sungai (DAS) or Watershed is the accumulation of material from Jeneberang\ud
debris avalanche of Mount Bawakaraeng. The Resistivity material from several types of rock\ud
settling needs to be identified by using the geoelectric geophysical studies. Geoelectrical\ud
resistivity method used in this study aims to map the vertical layers of rock in the upstream and\ud
downstream of Jeneberang watershed. The results shows that resistivity values in the upstream of\ud
Jeneberang watershed is relatively high at around 300 - 2000 ohmmeter. This price indicates the\ud
value of plutonic rock of resistivity type. Around the downstream watershed of Jeneberang, \ud
resistivity value is relatively low, ie below 300 ohmmeter. This value indicates that in the\ud
downstream of watershed sediment rocks have experienced weathering
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
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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