1,720,963 research outputs found
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
PENGGUNAAN METODE ACTIVE CONTOUR UNTUK SEGMENTASI PARASIT MALARIA PLASMODIUM FALCIPARUM
No full textABSTRAK
Plasmodium falciparum merupakan penyebab malaria tropika atau malaria falciparum. Spesies ini paling berbahaya dibandingkan keempat spesies lainnya karena dapat menyebabkan komplikasi malaria serebral. Parasit ini menyerang setiap eritrosit tanpa memandang umur, sehingga angka infeksi eritrosit (derajat parasitemia) sangat tinggi dan sering menyebabkan komplikasi berat antara lain syok, malaria serebral, gagal ginjal akut, hemolisis intravaskular, dan edema paru. Penulis tertarik untuk melakukan penelitian segmentasi pada citra parasit malaria plasmodium falciparum dengan metode active contour yang mengimplementasikan sebuah proses khusus yaitu Selective Binary and Gaussian Filtering Regularized Level Set (SBGFRLS). Pada proses SBGFRLS, pertama kali dilakukan pengubahan fungsi level set kedalam bentuk biner, kemudian digunakan filter gaussian untuk meregularisasinya. Metode active contour Selective Binary and Gaussian Filtering Regularized Level Set (SBGFRLS) untuk segmentasi obyek sel darah terjangkit parasit plasmodium falciparum dalam mendeteksi tepi objek dapat melakukan segmentasi dengan baik pada suatu obyek sel darah yang memiliki intensitas interior tidak homogen.
Kata kunci: plasmodium falciparum, active contour, selective binary and gaussian filtering regularized level set (SBGFRLS), filter gaussian
Identifikasi Obyek Benda Tajam Menggunakan Pengolahan Citra Digital pada Citra X-Ray
Full text linkPemindaian barang di bandara merupakan bagian dari usaha menjaga kemananan dan keselamatan penumpang dan bandara itu sendiri. Selama ini proses pemindaian barang masih secara manual, yaitu dengan melihat monitor display mesin x-ray. Salah satu tujuannya adalah untuk memeriksa apakah terdapat barang berbahaya seperti pisau di dalam tas atau bagasi penumpang. Penelitian ini mengimplementasikan identifikasi obyek benda tajam (dibatasi pada pisau, cutter dan gunting) pada citra x-ray menggunakan color based segmentation yang bertujuan untuk mengurangi kelalaian petugas keamanan bandara dalam memeriksa barang bawaan penumpang yang diakibatkan oleh keletihan. Proses identifikasi dilakukan dengan menghitung boundary obyek dan nilai kebulatan untuk menentukan apakah obyek pemindaian tersebut adalah benda tajam (pisau, gunting, cutter) atau bukan
DETEKSI WAJAH PADA CITRA BERWARNA MENGGUNAKAN COLOR-BASED METHOD DAN FEATURE-BASED METHOD
Full text linkDeteksi wajah merupakan tahapan awal yang penting dalam proses pengenalan wajah. Teknik-teknik pengenalan wajah yang dilakukan selama ini banyak yang menggunakan asumsi bahwa data wajah yang tersedia memiliki ukuran yang sama dan latar belakang yang seragam. Di dunia nyata, asumsi ini tidak selalu berlaku karena wajah dapat muncul dengan berbagai ukuran dan posisi di dalam citra dan dengan latar belakang yang bervariasi. Penelitian ini menggunakan kombinasi dari metode color-based dan feature-based. Terdapat dua tahapan utama dalam penelitian ini. Pertama, segmentasi kulit pada ruang warna YCbCr. Kedua, ekstraksi fitur wajah menggunakan rasio tinggi terhadap lebarkan di data wajah, pencarian area mulut dan pencarian area mata. Hasil dari penelitian ini, dari pendeteksian pada 45 citra warna dengan background kompleks didapat presentase keberhasilan sebesar 66,67%.</div
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
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