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Seasonal ENSO forecasting: Where does a simple model stand amongst other operational ENSO models?
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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
VERIFIKAS PETA INDEKS BENCANA PUTING BELIUNG
No full textPuting-beliung (PB) adalah salah satu fenomena cuaca ekstrim yang telah menimbulkan korban jiwa dan kerusakan fisik pada daerah yang dilaluinya. Penelitian ini bertujuan untuk menyelidiki akurasi peta indeks resiko bencana PB yang dikeluarkan oleh BNPB untuk seluruh wilayah tanah air. Indeks model ini dihitung berdasarkan kemiringan (slope), keterbukaan (openness) dan curah hujan tahunan suatu daerah. Wujud luaran model BNPB adalah berupa peta risiko bencana PB suatu daerah yang terdiri atas 3 kategori yakni risiko rendah, sedang dan tinggi. Model BNPB diuji tingkat akurasinya dengan membandingkan antara prediksi model dengan kejadian (observasi) puting beliung untuk seluruh wilayah Indonesia yang terekam sejak bulan Agustus 2011. Akurasi prediksi untuk masing-masing kategori berdasarkan nilai Peirce Score beserta taksiran nilai ketidakpastiannya adalah: 0,1 ?? 1,3 ?? 10-5, -0,3 ?? ?? 3,0 10-5 , and 0,4 ?? 1,21 ?? 10-5. Rendahnya akurasi peta risiko puting-beliung BNPB ini menunjukkan bahwa peta ini belum handal digunakan dalam mengidentifikasi daerah rawan putting-beliung yang amat dibutuhkan sebagai upaya penyiapan dan penyaluran bantuan bencana. \ud
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Puting-beliung (tornado) belongs to a weather extreme. It has been classified as one of the national disaster by the BNPB (Badan Nasional Penanggulangan Bencana ??? National Body for Disaster Reduction) due to its human casualties and physical destructions. This research aims for investigating the accuracy of a tornado risk-index map for the Indonesian region produced by BNPB. The map is calculated using three parameters: land slope and openness and annual rainfall for the area. The risk is categorized as low, medium and high. The map is verified against observed puting beliungs since August 2011 and its accuracy for each risk is determined using Peirce score. Using a GIS tool, we found that the Peirce score along with its uncertainty was: 0.1 ?? 1,3 ?? 10-5, -0.3 ?? ?? 3.0 10-5 , and 0.4 ?? 1.21 ?? 10-5 for a low, medium and high risk, respectively. Our study suggested that the BNPB risk map was not useful in terms of locating identifying puting-beliung prone areas needed for pre-cautionary and relief-aid
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
Estimasi Dosis Efektif Pasien Bagian Abdomen dari Hasil Pemeriksaan CT-Scan Merek Siemens SOMATOM
Get PDFPenelitian ini bertujuan untuk menghitung dosis efektif yang diterima pasien yang mengalami eksaminasi CT pada bagian perut (abdomen). Data yang digunakan pada penelitian ini adalah data pasien yang dikumpulkan dari Departemen Radiologi di salah satu rumah sakit di Makassar dan merupakan hasil eksaminasi CT-Scan Simens tipe SOMATOM bagian abdomen 80 pasien. Hasil penelitian menunjukkan bahwa nilai rata-rata CTDIvol dan dosis efektif yang diterima pasien laki-laki masing-masing 7,87 mGy dan 5,52 mSv, sedangkan untuk pasien perempuan masing-masing 7,53 mGy dan 4,97 mSv Dosis yang diterima pasien tersebut masih dalam ambang batas yang telah ditetapkan oleh BAPETEN
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