1,720,957 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
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
Egg yield characteristics of broiler parent stocks
Full text linkBu çalışmada broyler ebeveyn ticari hatları olan Ross 308 ve Ross 508' in yumurta verim özellikleri karşılaştırılmıştır. Ross 308 hattı 4 tekerrürlü olarak, (2200 kapasiteli 4 kümeste yetiştirilen toplam 8901 adet tavuk) ve Ross 508 hattı 5 tekerriirlü (2200 kapasiteli 5 kümeste toplam 10334 adet tavuk) yumurta verim özelliklerini karşılaştırmak için kullanılmıştır. Tavuk-gün yumurta verimi (%), tavuk-giin toplam yumurta sayısı, yumurta ağırlığı (g), kuluçkalık dışı yumurta oranı (%), ölüm oranları (%), yem tüketimleri (g), 24. hafta ve 38. hafta canlı ağırlıkları (g) ve pik yumurta verimleri (%) sırasıyla; % 67.76 -65.55 (P0.05), 61.96 - 59.64 g (P0.05), 169.14 -164.73 g, 3157.41 - 2932.94 g (P0.05) ve % 87.80 -76.99 (P<0.01) olarak bulunmuştur. Çalışmada, Ross 308 broiler ebeveyn hattı, Ross 508 ebeveyn hattına göre yumurta verim özellikleri bakımından daha üstün bulunmuştur. Bu tip çalışmalar, Ross hatlarının yanında, broyler üreticilerine kılavuz olmak için diğer ticari hatlarda da yapılmalıdır.This study was carried out to compare egg yield parameters of broiler parent stocks Ross 308 and Ross 508. Ross 308 with 4 replications and (4 poultry houses each having 2200 bird capacity, total 8901 hens) and Ross 508 with replications (5 poultry houses with 2200 poultry houses each having 2200 bird capacity, total 10334 hens) were used to compare their egg yield parameters. Hen-day egg production (%), hen-haused total egg number, egg weight (g), discarded eggs (%), mortality rates (%), feed intakes, 24-week old body weight of hens, 38-week old body weights of hens and egg production upper limits (%) were found in Ross 308 vs Ross 508 broiler parent stock hens as following; 67.76 vs 65.55 % (P<0.01), 155 vs 153 (P>0.05), 61.96 vs 59.64 g (P<0.01), 5.42 vs 6.63 % (P<0.01), 9.61 vs 8.79 % (P>0.05), 169.14 vs 164.73 g (P<0.01), 3157.41 vs 2932.94 g (P<0.01), 3818.25 vs 3876.40 g (P>0.05) and 87.80 vs 76.99 % (P<0.01). In this study, results showed that. Ross 308 broiler parent stocks were higher than Ross 508 with respect to egg yield parameters. This kind of studies should also be carried on in other commercial parent stocks besides Ross breeders in order to give guidance to poultry producers
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Sentetik ve ticari etlik piliç genotiplerinin bazı ekonomik parametreler ve ebeveyn performansları bakımından karşılaştırılması
Full text linkIn this study, commercial parents and synthetic parents which were developed from commercial maternal and paternal lines are compared. During the study, a total of 19654 animals, as being 8520 female, 1275 male chicks from commercial line (TK) and 8584 female, 1275 male chicks from synthetic line (SH), were used. Broiler experiment was conducted with a total of mixed-sex 2073 chicks, as being 1044 (3x348) chicks from TK group and 1029 (3x343) chicks from SH group. In 23 weeks growing period, female parents from TK and SH groups consumed 9.91 and 9.87 kg feed per animal, completed the process with 6.5% and 7.3% mortality and separation rate, 87% and 85% uniformity and lastly, 2846 and 2753g live weights at the end of 23 weeks, respectively. In the meantime, male parents with 9.5% and 10.8% mortality and separation rate consumed 11.1 and 11.3 kg feed per animal, respectively. Female parents from TK and SH groups reached 5% egg production efficiency at the ages of 26 and 25 weeks, and peak production at the ages of 35 and 32 weeks, respectively. At the age of 50 weeks, 5.7% and 6.0% mortality and separation rate, 84.5% and 83.8% peak egg production efficiency, 129.0 and 128.0 pcs of egg production, 116.8 and 118.5 pcs of incubating egg production, 62.5 and 60.0g of average incubating egg weight, 82.1% and 80.6% incubation yield were observed in the parents from TK and SH groups, respectively. Broiler chicks, with the weight of 39.7 and 37.7 g, obtained from TK and SH parents respectively reached the live weight of 2481 and 2375 g at the 42nd day consuming 4429 and 4372 g feed, respectively. In this broiler experiment, the feed conversion ratio was determined as 1.79 and 1.80 respectively. In the study, it was concluded, that new synthetic line obtained from commercial maternal and paternal lines can be used for broiler production.Bu çalışmada, ticari ana ve baba ebeveyn hatlarından geliştirilen sentetik ebeveynler ile ticari ebeveynler karşılaştırılmıştır. Denemede ticari hat (TK) 8520 dişi, 1275 erkek civciv ve sentetik hat (SH) 8584 dişi ve 1275 erkek civciv olmak üzere toplam 19654 adet hayvan kullanılmıştır. Etlik piliç denemesi TK grubundan 1044 (3x348) adet, SH grubundan ise 1029 (3x343) adet, toplam 2073 adet karışık cinsiyette civciv ile yürütülmüştür. TK ve SH grubu dişi ebeveynleri 23 haftalık büyütme döneminde sırası ile hayvan başına 9,91 ve 9,87 kg yem tüketmiştir. Aynı sıra ile %6,5 ve %7,3 oranında ölüm ve ayıklama oranı, %87 ve %85 üniformite ve 23. hafta sonunda 2846 ve 2753g canlı ağırlık ile tamamlamışlardır. Erkekler aynı sırayla %9,5 ve %10,8 oranında ölüm ve ayıklama oranı ile 23. haftalık yaşa kadar 11,1 ve 11,3 kg yem tüketmişlerdir. Dişi ebeveynler TK ve SH grubunda %5 yumurta verimine sırasıyla 26 ve 25. haftalık yaşta; pik yumurta verimine ise 35 ve 32. haftalık yaşta ulaşmışlardır. Ebeveynler TK ve SH sırası ile 50 haftalık yaşta %5,7 ve %6,0 ölüm ve ayıklama oranı, %84,5 ve %83,8 pik yumurta verimi, 129,0 ve 128,0 adet yumurta verimi, 116,8 ve 118,5 adet kuluçkalık yumurta verimi, 62,5 ve 60,0 g ortalama kuluçkalık yumurta ağırlığı saptanmıştır. Aynı sıra ile kuluçka randımanları %82,1 ve %80,6 olarak tespit edilmiştir. TK ve SH ebeveynlerinden elde edilen 39,7 ve 37,7 g ağırlığındaki etlik civcivler, 4429 ve 4372g yem tüketerek 42. günde 2481 ve 2375g canlı ağırlığa ulaşmışlardır. Etlik piliç denemesinde yemden yararlanma oranları sırasıyla 1,79 ve 1,80 olarak tespit edilmiştir. Araştırmada, etlik piliç üretimi için ticari ana ve baba hatlarından elde edilen sentetik yeni hatların kullanılabileceği sonucuna varılmıştır
- …
