1,720,956 research outputs found
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
Analysis of Road Pavement Characteristics Using Asphalt Rubber and Different Fillers Against Marshall Values
No full text69Aspal karet (natural rubber) Salah satu produksi yang diandalkan oleh pemerintah saat ini, APE telah mengembangkan dan memproduksi aspal karet sesuai dengan spesifikasi PU Bina Marga dan telah lolos uji proportis dan uji stabilitas dinamis aspal karet (wheltreking) dibalai besar pelaksanaan jalan nasional Pekerjaan Umum Bina Marga Surabaya sehingga menjadikan sebagai pelopor produksi aspal karet indonesia. Aspal karet memiliki keunggulan dibandingkan aspal murni dalam hal ketahanan terhadap deformasi (alur/cekungan) pada arah memanjang di permukaan jalan sekitar jejak roda kendaraan akibat beban lalu lintas yang berat, pengelupasan lapisan aspal dengan agregat, serta ketahanan terhadap retakan jalan akibat perubahan suhu lingkungan. standar uji Standar Nasional Indonesia (SNI) Spesifikasi Umum Bina Marga 2010 Revisi 3 Tujuan penelitian mendapatkan Nilai kuat tekan dengan menggunakan alat tes Uji Marshall beserta nilai KAO (Kadar Aspal Optimum) dengan menggunakan filler abu batu dan semen. Mengetahui persentase rongga dalam campuran (VIM), persen rongga terisi aspal (VFB), persen rongga diantara mineral agregat (VMA), stabilitas (stability), kelelehan (Flow), dan Marshall quatient dari filler abu batu dan semen pada perkerasan jalan lapisan perkerasan AC-WC dengan aspal karet menggunakan filler abu batu dan semen terhadap nilai marshal dengan komposisi campuran 4 %,4,5 %,5%,5,5%,6%,.7% dengan peneterasi 60/70. Hasil penelitian yang dilakukan kadar aspal karet 6, % dengan fillers abu batu diperoleh nilai stabilitas 1050 kg.sedang kadar aspal karet 6,0 % dengan filler semen nilai stabilitas 1048 kg, dari yang dilakukan .sesuai dengan standart SNI memenuhi spesifikasi nilai stabilitas campuran aspal penetrasi 60/70. Kesimpulan pengujian yang dilakukan dengan menggunakan filler yang berbeda terdapat nilai stabilitas yang disaratkan bahwa aspal karet dapat digunakan sebagai bitumen pada lapisan perkerasan jalan. Asphalt rubber (natural rubber) One of the products that the government relies on at this time, APE has developed and produced rubber asphalt in accordance with PU Bina Marga specifications and has passed the proportional test and dynamic stability test of rubber asphalt (wheltreking) in large centers for national road implementation Public Works Bina Marga Surabaya, making it the pioneer of Indonesian rubber asphalt production. Rubber asphalt has advantages over pure asphalt in terms of resistance to deformation (grooves / basins) in the longitudinal direction on the road surface around vehicle wheel tracks due to heavy loads, peeling of the asphalt layer against aggregates, and resistance to road cracks due to changes in environmental temperature. Indonesian National Standard (SNI) standard for Highways General Specifications 2010 Revision 3. The research objective was to obtain the compressive strength value using the Marshall test instrument and the value of KAO (Optimum Asphalt Content) using rock ash and cement filler. Knowing the proportion of cavities in the mixture (VIM), percent of cavities filled with asphalt (VFB), percent of cavities between mineral aggregates (VMA), stability (stability), melting (flow), and Marshall quatient of rock ash and cement filler on pavement layers of pavement. AC-WC with rubber asphalt using a filler of rock ash and cement to the marshal value with a mixture composition of 4%, 4.5%, 5%, 5.5%, 6% ,. 7% with 60/70 penetration. The results of the research conducted with 6,% rubber bitumen content with rock ash filler obtained a stability value of 1050 kg, while the rubber asphalt content was 6.0% with cement filler a stability value of 1048 kg, from that carried out according to SNI standards according to the specifications for the value of the penetration asphalt mixture 60/70. Tests performed using different fillers have a required stability value that rubber asphalt can be used as bitumen in the pavement layer
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
Enhance Land Support Layer Road Pavement Subgrade Soil Plant Stability Based on Geotextile
No full textAt the stage of a construction work one of the main problems in soft soil is the large land decline. The large decrease is due to the decrease in soil. The condition of poor base soil in the form of clay soil needs to be done to improve the basic soil to be able to support the construction load. One method used as land improvement is by geotextiles. This paper described type of geotextile used in the construction of the Medan-Kualanamu-Tebing Tinggi toll road project, Parbarakan-Lubuk Pakam Sta.42 + 750-Sta.47 + 600 is a geotextile PP woven polypropylene. The geotextile type uses non woven geotextile while the study is geotextile polypropylene woven, Non woven tensile strength 20 kN / m required 1 layer of geotextile while tensile strength Polypropylene woven 30 kN / m required 2 layers of geotextile. From these calculations can be concluded that the use of geotextiles can be used as one of the repair and retrofitting
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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