1,721,155 research outputs found
Cloning and expression of Thermobifida xylanse gene in the methylotrophic yeast Pichia pastoris
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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
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
(32(1):92-104)Modification and Improvement of Rice Combine into Sorghum Combine
No full text本研究係以國產野興牌YS 1300 型水稻聯合收穫機改良而成為高粱聯合收穫機，除可收穫高粱外，換下部分機件即可收穫水稻，反之亦然。本試驗機依據收穫高粱之試驗結果所顯示之缺點，分七個步驟改良完成。1. 提高機頭扶起裝置動力傳動橫軸，並拆除前閘門橫板，以允許較高高梁穗通過。2. 底部夾送鏈條與其夾導桿間之展開間隙加大，可讓較粗之株桿通過。3. 增長可調傾斜橫向夾送鏈總成長度，以調整高粱穗脫粒之適當位置。4. 改良可調傾斜橫向夾送鏈條與脫粒夾送鏈條間之轉接導桿，使株桿能順利進入脫粒夾送鏈。5. 增置導穗板，便利高粱穗部之導入脫粒室。6. 增加鼓風機迴轉數，提高風選能力。7. 增加回送管旋轉葉片迴轉數，增強擲送同脫粒室能力，避免同送管阻塞。
本試驗機已達可推廣使用階段，收穫高粱之作業能量為每日0.8~1.5 公頃（一日以8 小時計算），作業流量可達1,060 kgs / hr ，場地工作效率為78~82%，人工收穫高粱之費用每公頃約需7,500 元，用本機收穫所需費用每公頃約需5,500 元，則每公頃約可節省2,000 元，同時替代勞力20~25 人工次（man-day）。
An attempt was made in 1980 to modiyy and improve the locally made rice combine for harvesting sorghum grain. This Yeh-hsing YS 1300 rice combine has been modified or improved in seven steps to attain the aim, in accordance with the demerits exposed by the original combine which has been used to harvest sorghum.
The modified or improved components are: 1. Raise the power transmission transv-erse shaft 36 cm higher than the original position, and the front transverse gate plate was removed, so that it will alow the passing of sorghum heads. 2. Widen the open gap between the bottom gripping chain and guide rod to permit the passing of stalks, these stem diameters are larger than 1 .6 cm. 3. Elongate the inclined adjustable transverse gripping chain assembly for 25 cm, so it can be used to adjust he proper length of the stalk of sorghum head entering the thresher. 4. Improve the guide rod between the inclined adjustable transverse gripping chain and threshed gripping chain, this will alow the stalks to enter the threshed gripping chain easier. 5. Add guide plates to the blank side of the combine caused by lifting the transverse shaft support, for guiding sorghum heads into the threshing room. 6. Increase the fan speed to increase the blowing ability of dirts.7. Increase the speed of No. 2 auger with throwing back vanes in order to accelerate the ability of throwing material back to the threshing room.
This modiffied machine has reached the stage for commercially available at the present time, and has the abilityof sorghum harvesting capacity of 0.8 to 1.5 ha/day, grain flow capacity: 1,060kgs/ha, field efficiency: 78% to 82%. The sorghum harvest cost by human labor is N. T. 5,500/ha, therefore it will save N. T. $ 2,000/ha, also it will take place the human Jaber labor of 20 to 25 man- days
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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