1,721,229 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
EFEK SWIRL FAN TERHADAP PENDINGINAN EKSTRUDE FIN DENGAN VARIASI DAYA 95 - 120 WATT
Full text linkThe present, heat transfer on Component electronic system is very important. The topic in this paper is annalysing the effect of heat transfer using swirl fan effect. This effect is produced by the air flow of a fan. The fan that caused swirl direction on air flow. The using of this method is to increase the turbulence effect on the fluid, so it will make the cooling rate for heat transfer raise. The result of this experiment indicate that the cooling rate of the heat sink use swirl fan effect is higher than it no swirl fan effect, and the flow of the low velocity provide good effect
Efek Longitudinal Vortex Dihasilkan dari Vortex Generator Jenis Concave Delta dan Rectangular Winglet terhadap Perbaikan Perpindahan Panas: Visualisasi Aliran/Studi Eksperimental
No full textThe generation of longitudinal vortex to enhance the rate of heat transfer is a passive method that has been widely considered recently. This consideration is based on improving the energy efficiency and optimum design of a heat exchanger. Therefore, this study is focused on the experimental test and flow visualization of effects of longitudinal vortex generated from concave delta and rectangular winglet vortex generators on the increase of heat transfer rate. This is performed by draining the air inside the channel with variations in velocities ranging from 0.4 m/s - 2 m/s through a rectangular plate mounted with the vortex generators. The attack angle of the flow against the vortex generator is 15°. The flow visualization is performed by firing a laser beam on a cylindrical glass rod at certain locations to capture the longitudinal vortex formed on the cross-section plane. Inlet and outlet air temperatures and wall temperature are measured using the thermocouples. The results show that the longitudinal vortices are formed in the wake region of the vortex generators. By using the concave delta winglet, the heat transfer rate can be increased up to 51% and increased to 85% using the concave rectangular winglet
UNJUK KERJA SISTEM AIR-COOLED CHILLER DAN KOMPRESOR TORAK HERMETIK DENGAN MENGGUNAKAN REFRIGERAN R-134a
Full text linkAir conditioning is the greater part used for its comfort, which is to generate comfortable air condition for people in an area. Chiller used for high cooling load, so that required not too much refrigerant and changing with water to cooled the room
In this research is used refrigerant R-134a as a secondary refrigerant on an evaporator to chill water. Being chilly, the water is then pumped into the coil - the Fan Coil Unit ( FCU ) coil – so as to cool down the temperature of an area. This work varies evaporator output temperature and maintains condenser temperature constant. These treatments aim at discovering a compressor’s working signal and coefficient of performance (COP) of a refrigerant vapour compression system on an air-cooled chiller testing device by employing the refrigerant R-134a.
According to the research, it can be explained that the high capacity on temperature of condensation 27oC, the high capacity of compressor on condensation temperature 31oC and the high capacity of coefficient of performance on condensation temperature 27oC. Therefore, with knowing the characteristic of hermetic compressor, it can make easily the designer to design the air-conditioning system
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