1,720,970 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
Performance Characteristic Modeling Of Hybrid Proton Conducting Solid Oxide Fuel Cell (Psofc) And Micro Gas Turbine (Mgt) System Using A Double Bypass Valve For Heat Management
No full textConducting Proton-Solid Oxide Fuel Cell (pSOFC), by attaching Micro Gas Turbine (MGT) is oneof outstanding hybrid system nowadays. intermediate temperature of pSOFC(around 700 – 800 [0C])is used to raise performance of micro gas turbine in apowerplantsystem. pSOFC has a lower temperature characteristic than old type of SOFC, which can afford more rapid start up/down and improve durability. A new model is proposed in research based on models developed by earlier researchers. proposed hybrid system is simulated using Matlab-Simulink. Simulations were performed to study behavior of pSOFC-MGT hybrid system by changing respective parameters such as pressure, steam to carbon ratio, and fuel utilization.In our research, we proposed, three different configurations by changing bypass position in my proposed system i.e., with placing bypass(i) after combustor, (ii) after turbine, and (iii) after combustor and turbine. results show that higher operating pressure will reduce system efficiency for configuration 1 and 2, and increase efficiency for configuration 3. effect of raising Steam to Carbon Ratio will reduce efficiency of configuration 1 for anoperating pressure of 1 – 2 [bar], but it increases efficiency of configuration 2 and configuration 3. higherfuel utilization will increase efficiency for all configurations. For bypass ratio variation, increase in bypass ratio will increase efficiency of all configurations. Considering all results ofconfiguration 3 provide best performance compared to configuration 1 and 2 in all three models. efficiencies of configuration 1, configuration 2, and configuration 3 are 49%, 63%, and68% respectively. study obtained that using overall heat exchanger over 5 W/K will not give an effect to configuration 3 performance so much. cost analysis can be taken into consideration bychoosing an appropriate device to build a configuration 3 model. exergy analysis has a same tendency with energy analysis, but it will different in value. Due to exergy destruction during process, value of energy is higher than exergy. To know an amount of exergy destruction, it carried out calculations based on amount of entropy generation and found devices that have lost exergy from largest to smallest in a sequence is combustor 60.2[kW], pSOFC 22.8 [kW] Compressor 21.7 [kW], Pump 5.5 [kW], Fuel Heater 0.9 [kW], reformer 0.7 [kW], water heater 0.4 [kW], air heater 0.23 [kW], and MGT 0.21 [kW]
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Pengaruh Variasi Air Fuel Ratio (Afr) Terhadap Karakteristik Api Pembakaran Premixed Minyak Kapuk Pada Burner
Full text linkKebutuhan manusia yang sangat besar terhadap bahan bakar fosil menyebabkan cadangan sumber energi tersebut semakin lama semakin berkurang,sehingga saat ini banyak dikembangkan bahan bakar dari minyak nabati yang salah satunya adalah minyak kapuk. Kandungan minyak kapuk yang sangat kompleks terdiri dari beberapa rangkaian trigliserida asam lemak dan juga gliserol. Dimana masing-masing asam lemak punya karakteristik pembakarannya sendiri, sehingga mempengaruhi pola api pembakaran minyak kapuk secara keseluruhan, yang mana besarnya AFR juga berpengaruh pada karakteristik nyala api. Oleh karena itu perlu diketahui pengaruh AFR terhadap karakteristik api pembakaran minyak kapuk. Penelitian ini dilakukan dengan membakar campuran uap minyak kapuk dan udara pada burner dengan AFR tertentu hingga api mengalami lift off kemudian padam (blow off). Berdasarkan data hasil penelitian didapatkan bahwa penambahan AFR meningkatkan kecepatan api (30,278cm/dt pada AFR 0,143:1 terus meningkat hingga 296,347cm/dt pada AFR 4,011:1), dan mempengaruhi pola warna api yang tadinya berwarna kekuningan menjadi biru lalu api mulai terangkat (lift off) kemudian padam. Perubahan AFR juga memberi pengaruh pada perubahan temperatur api meski perubahannya tidak terlalu signifikan. Perubahan AFR memberikan geometri api yang semakin membesar (dengan tinggi api 1,34 cm pada AFR 0,143:1 hingga tinggi api 4,429 cm pada AFR 1,526:1) kemudian api semakin kecil (tinggi api 0,264 cm pada AFR 4,011:1) hingga api lift off lalu padam
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