1,720,954 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
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
PENENTUAN WAKTU HENTI ANTIBIOTIK OKSITETRASIKLIN PADA PEMBESARAN IKAN KAKAP PUTIH (Lates calcarifer Bloch) UNTUK PENETAPAN WAKTU PANEN SEBAGAI UPAYA PENCEGAHAN DAMPAK TERHADAP LINGKUNGAN DAN KEAMANAN PANGAN
Full text linkOksitetrasiklin banyak digunakan pembudidaya ikan karena berspektrum luas dan belum adanya larangan khusus tentang penggunaanya di budidaya ikan, namun penggunaan yang tidak terkontrol pemakaian Oksitetrasiklin pada budidaya ikan berpotensi mencemari lingkungan perairan dan berbahaya bagi kesehatan manusia terkait dengan keamanan pangan.
Penelitian ini bertujuan untuk menetukan waktu henti residu Oksitetrasiklin pada budidaya ikan Kakap Putih (L. calcarifer Bloch) sehingga dapat ditentukan waktu aman untuk dipanen yang berkaitan dengan keamanan pangan bagi konsumen. Selain itu dalam penelitian ini bertujuan untuk mengetahui seberapa besar konsentrasi residu antibiotik Oksitetrasiklin yang terbuang ke lingkungan yang berpotensi menyebabkan pencemaran lingkungan.
Menggunakan metode eksperimen dengan RAL (Rancangan Acak lengkap) 1 perlakuan 1 ulangan dan 1 kontrol, menggunakan 100 ekor ikan Kakap Putih (L. calcarifer Bloch) untuk tiap kelompok uji. Perlakuan berupa pemberian Oksitetrasiklin dengan dosis 75 mg/kg berat badan melalui pakan selama 7 hari. Sampel yang diambil berupa sampel daging ikan, feses dan air yang kemudian dianalisa konsentrasi residunya dengan menggunakan metode ELISA.
Hasil penelitian diperoleh bahwa kandungan residu pada daging ikan uji pada kelompok perlakuan lebih besar hampir 20 kali lipat dari kandungan pada kelompok kontrol, dari sampel feses konsentrasi residu di kelompok perlakuan lebih besar 23 kali lipat dibanding kelompok kontrol, demikian juga di air media pemeliharaan nilai konsentrasi di kelompok perlakuan 63 kali lipat lebih besar dari kelompok kontrol. Nilai waktu henti yang didapat yaitu pada hari ke-2 setelah dihentikanya perlakuan dan ikan sudah aman untuk dikonsumsi jika dipanen setelah melewati waktu henti. Kandungan residu antibiotik yang terpapar di perairan berpotensi membunuh bakteri non-target dan resistensi bakteri di perairan sehingga mengganggu keseimbangan lingkungan
Kata kunci : Residu, Withdrawal Time, Resistensi
Oxytetracycline is being used by many fish farmers because it’s broad spectrums and there is not yet any special prohibition of utilization on fish farming. Uncontrolled use of the Oxytetracycline in fish cultivation has the potential to pollute the aquatic environment and it is harmful to human health associated with food security.
This study aims to determine the withdrawal time of Oxytetracycline residual on Barramundi (L. calcarifer Bloch) farm so can determine the safe time to harvest the fish which is associated with food safety for consumers. Furthermore, in this study also aims to find out how much the concentration of antibiotic residues of Oxytetracycline that wasted into the environment that has potential issue causing enviromental pollution.
Using experimental method with RAL (Completely Randomized Plan) 1 Treatment, 1 replication, and 1 control, using 100 Barramundi fish for each test group subject. Treatment in the form of giving Oxytetracycline with dose 75 mg / kg body weight through feeding for 7 days. Samples which are taken in the form of fish meat, feces and water samples then analyzed by residual concentration using ELISA method.
The result showed that the residual content of the test fish meat in the treatment group was greater nearly 20 times than control group, from the feses sample of residual concentration in the group was greater 23 times than the control group, as well as in aquatic cultivation media the concentration value at treatment group 63 times greater than control group. The value of withdrawel time is obtained on the second day after the treatment has stopped and the fish is safe for consumption if harvested after the withdrawal time. The content of antibiotic residues exposed in the waters potentially kill non-target bacteria and cause bacterial resistance in the waters thus disrupting the environmental balance.
Keywords: Residue, Withdrawal Time, Resistanc
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
Ectoparasites Identification on Spiny Lobster (Panulirus homarus) Cultivated Controlled Tanks and Floating Net Cages (KJA) at the Lampung Marine Aquaculture Center (BBPBL) : Identifikasi Ektoparasit Lobster Pasir (Panulirus homarus) pada Bak Terkendali dan Keramba Jaring Apung (KJA) di Balai Besar Perikanan Budidaya Laut (BBPBL) Lampung
Full text linkEctoparasites can infect aquatic biota, including spiny lobster (Panulirus homarus), which causes failure of spiny lobster cultivation, such as death, bacterial infection, and decreased cultivation quality. One of the failures of spiny lobster cultivation is often caused by ectoparasite disorders. Environmental conditions influence the growth and distribution of ectoparasites. This study aims to identify the types of ectoparasites and factors that influence the presence of ectoparasites in spiny lobsters and determine the intensity and dominance of spiny lobster ectoparasites. The study was conducted in floating net cages (KJA). It controlled Lampung Marine Aquaculture Center (BBPBL) tanks by purposive random sampling with 18 spiny lobsters, each taken from KJA and controlled tanks. The stages of the study included taking mucus samples on the tail and swimming legs (pleopods), microscopic examination of ectoparasites, calculating the intensity and dominance of ectoparasites, and measuring water quality parameters. The study results obtained three ectoparasites infecting the Spiny lobster, including the Protozoa phylum and the Ciliata class: Vorticella sp., Zoothamnium sp., and Epistylis sp. The intensity of Vorticella sp. ectoparasite attacks was 11.5/lobster. The most dominant ectoparasite was the Vorticella sp. type at 53.90%. The difference in the number of ectoparasites in controlled tanks and floating net cages was due to differences in temperature, size of the cultivation container, and depth, which affected water quality
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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