1,720,967 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
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
Evaluasi Pengaruh Koagulan Alami dan Sintetis Proses Basa pada Pengendapan Selektif Pemurnian Reject Water SWRO dan Potensi Ekonomi Aplikasinya
Get PDFBrine water yang berasal dari reject water seawater reverse osmosis (SWRO) memiliki jumlah padatan terlarut (TDS) lebih dari 40.000 mg/L yang didominasi oleh ion-ion Ca2+, Mg2+, Na+, Cl-, SO42-dan HCO3-. Apabila dibuang langsung ke laut tanpa pengolahan terlebih dahulu dapat merusak lingkungan penerima. Brine water mengandung konsentrat NaCl, yang dalam jumlah besar memiliki nilai ekonomi antara lain sebagai bahan baku industri klor-alkali, regenerasi resin penukar ion dan sebagainya.
Tujuan penelitian adalah menemukan pengaruh koagulan alami dan sintetis dalam proses basa pada pemodelan pengendapan selektif pemurnian reject water SWRO, sehingga diperoleh kondisi optimum dalam proses memurnikan larutan NaCl dari mineral impurities. Penelitian dilakukan dalam skala laboratorium, menggunakan jar test. Untuk menentukan kondisi optimum penelitian, digunakan rancangan Response Surface Methodology (RSM) pada berbagai variasi penelitian yaitu konsentrasi NaOH, Na2CO3, jenis dan dosis koagulan serta gradien kecepatan (G) flokulasi.
Hasil penelitian ini menunjukkan bahwa ekstrak Moringa oleifera memiliki gugus aktif aliphatic primary amides dan aliphatic alcohol functional group, sedangkan koagulan sintetis poliakrilamida kationik (Cationic Polyacrilamide) memiliki gugus aktif aliphatic amines group dan aliphatic hydrocarbone group. Gugus aktif koagulasi MO memiliki kemampuan yang sama dengan CP 0,1% dalam menurunkan kation golongan II dan anion valensi 2. Hal ini terlihat dari persentase penurunan kation impurities (Ca2+, Mg2+ dan K+) dan anion SO42- dari kedua golongan ini yang hampir sama. Analisis menggunakan Response Surface Methodology (RSM) menghasilkan titik optimum model pengendapan selektif menghasilkan konsentrasi NaCl tertinggi (49090 mg/L) berada pada kosentrasi NaOH 28.714%, dosis koagulan 24.4283 g/L dan menggunakan koagulan ekstrak Moringa oleifera. . Hasil analisa hubungan perubahan pH selama waktu pengendapan (t, menit) mengikuti persamaan logaritmik pH = - 0,832 ln(t) + 12,079 , dengan nilai R2 = 83,08%. Proses pemurnian reject water SWRO menghasilkan larutan crude NaCl 5% (masih mengandung ion-ion bivalen impurities). Hasil analisa ekonomi menunjukkan bahwa pemurnian reject water SWRO menggunakan ekstrak MO sebagai koagulan layak dibangun dan menguntungkan dengan nilai Payout Time 2 tahun, Break Even Point 44,53 % dan Internal Rate of Return (IRR) 86,74%. Hal tersebut menunjukkan bahwa investasi pemurnian reject water SWRO sangat layak dan dapat memberikan manfaat ekonomi yang sangat besar.
Kata kunci: reject water membran SWRO, koagulan, NaCl
============================================================
Brine water - which is derived from seawater reverse osmosis reject water (SWRO), has an amount of dissolved solids (TDS) around 40000-61000 mg/L; which is dominated by ions Ca2+, Mg2+, Na+, Cl-, SO42-and HCO3-. If its directly discharged into the open public sea without having any specific process, it surely will damage the environment. Brine water contains NaCl concentrate, that in huge quantities has certain economic values ; as a raw material in chlor-alkali industry, the regeneration of resin-ion exchange and any other substantial benefits.
This research aims to discover the capability of natural coagulant and the synthesis of alkaline process within reject water SWRO selective precipitation purification modelling, so the optimum condition from NaCl purifying process from impurities mineral content can be obtained. The research was conducted in a laboratory scale, using a jar test, and applied the Response Surface Methodology (RSM) design on a wide variety of variables, which are concentrations of NaOH, Na2CO3, type and dosage of coagulants also flocculation velocity gradient (G).
The final result of this research shows that Moringa oleifera’s extract contains a cluster of active Primary aliphatic amides and Aliphatic alcohol functional group, while the Cationic Polyacrilamide synthetic coagulant contains a cluster of active aliphatic amines group and aliphatic hydrocarbone group. Active cluster of Moringa oleifera’s coagulation has the same ability with CP 0,1% in reducing type II cations and anions with a valence of 2. This can be determined from the percentages of cationic impurities decreased (Ca2+, Mg2+ dan K+) and anion of SO42- since both have similarities. The analysis using Response Surface Methodology (RSM) resulted optimum point of Reject Water SWRO Selective Precipitation Purification Modelling with highest NaCl concentrate (49090 mg/L) occurred in NaOH concentrate of 28.714%, coagulant dosage of 24.4283 g/L and using the coagulant extract of Moringa oleifera.
The result of analysis of pH change relationship during settling time (t, min) following logarithmic equation pH = - 0,832 ln (t) + 12,079, with value R2 = 83,08%. The process of purifying reject water SWRO yields a 5% crude NaCl solution (still containing bivalent impurities ions). Result of economic analysis show that investation in purification of reject water SWRO using MO extract as coagulant worthy built and profitable with value of IRR 86,74%, 2 years payout time and BEP 44,53%.
Keywords : Reject Water SWRO Membranes, Coagulants, NaC
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
- …
