1,720,956 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
Keanekaragaman dan Kelimpahan Diatom Epilitik Di Sungai Kalisat Kecamatan Dau Kabupaten Malang
Full text linkABSTRAK:
Diatom merupakan fitoplankton dari kelas Bacillariophyceae yang susunan tubuhnya terdiri atas dinding sel yang terbuat dari silika (frustule). Selain berkontribusi penting dalam produktivitas primer yang mendukung siklus jejaring makanan di suatu perairan diatom banyak dijadikan sebagai bioindicator kualitas perairan karena siklus hidup yang pendek dan tingkat kepekaan terhadap perubahan kondisi lingkungan di perairan, serta dalam memproduksi biomass dan biofuel. Diatom banyak ditemukan dan mendominasi di perairan tawar maupun laut. Tujuan penelitian ini untuk mengetahui keanekaragaman jenis genus diatom epilitik di sungai Kalisat. Penelitian ini termasuk jenis penelitian deskriptif kuantitatif dengan metode ekplorasi. Pengambilan sampel diatom epilitik dilakukan dengan metode terpilih (purposive sampling) pada tiga stasiun dengan tiga kali pengulangan. Diambil lima biji dari substrat batuan berukuran 100 cm2. Analisis data yang digunakan dalam penelitian adalah Kelimpahan, Indeks Keanekaragaman (H’) dan Indeks dominansi (C’). Didukung dengan faktor Fisika Kimia air yang diamati adalah suhu, pH, DO, BOD, COD, TDS, Nitrat, dan Fosfat. Analisis hubungan antara indeks keanekaragaman dengan variabel fisika-kimia dengan kolerasi aplikasi PAST 4.03. Hasil penelitian ditemukan 10 jenis genus diatom epilitik. Kelimpahan jenis genus diatom epilitik banyak ditemukan berupa genus Gomphonema dan Navicula. Nilai indeks keanekaragaman sebesar 1,94 (stasiun 1), 1,89 (stasiun 2), dan 1,54 (stasiun 3). Nilai indeks dominansi sebesar 0,17 (stasiun 1), 0,15 (stasiun 2), dan 0,14 (stasiun 3). Suhu, pH, TDS, COD, Nitrat dan Fosfat memenuhi kategori baku mutu kelas I. Nilai DO stasiun 1 dan 2 memenuhi baku mutu kelas II, sedangkan Stasiun 3 memenuhi baku mutu kelas II. Nilai COD memenuhi baku mutu kelas II. nilai BOD, dan memenuhi baku mutu kelas III. Suhu berkorelasi paling kuat dengan Navicula (negatif). Korelasi pH sangat erat dengan Planothidium (positif). Kolerasi DO paling kuat dengan Fragilaria (negatif). Kolerasi BOD dan COD paling kuat dengan Fragilaria (positif), dan kolerasi TDS paling kuat dengan Planothidium (negatif
ABSTRACT:
Diatoms are phytoplankton of the class Bacillariophyceae whose body arrangement consists of a silica cell wall (frustule). In addition to contributing significantly to primary productivity that supports the food network cycle in water, diatoms are widely used as bioindicators of water quality due to the short life cycle and level of sensitivity to changing environmental conditions in the waters, as well as in producing biomass and biofuels. Diatoms are found and dominate in fresh waters as well as the sea. This study aimed to determine the diversity of types of epilithic diatoms in the Kalisat river. This research is a type of quantitative descriptive research with exploration methods. Epilithic diatom sampling was carried out by purposive sampling at three stations with three repetitions. Taken five seeds from a rock substrate measuring 100 cm2. The data analysis used in the study was Abundance, Diversity Index (H') and Dominance Index (C'). Supported by the observed water, Chemical Physics factors are temperature, pH, DO, BOD, COD, TDS, Nitrate, and Phosphate. Analysis of the relationship between the diversity index and Physico-chemical variables with the collation of past 4.03 applications. The results of the study found ten types of epilithic diatom genus. The abundance of epilithic diatomaceous genus species is widely found in Gomphonema and Navicula. Diversity index values were 1.94 (station 1), 1.89 (station 2), and 1.54 (station 3). Dominance index values were 0.17 (station 1), 0.15 (station 2), and 0.14 (station 3). Temperature, pH, TDS, COD, Nitrate and Phosphate meet the category of quality standards of class I. DO values of stations 1 and 2 meet class II quality standards, while Station 3 meets class II quality standards. The COD value meets class II quality standards. BOD scores and meets class III quality standards. Temperature correlates most strongly with Navicula (negative). The pH correlation is very close to Planothidium (positive). The most powerful DO collation with Fragilaria (negative). BOD and COD correlation is strongest with Fragilaria (positive) and TDS with Planothidium (negative).
مستخلص البحث:
الدياتوماتهيعوالق نباتية من فئةBacillariophyceaeيتكون ترتيب جسمها من جدار خلوي مصنوعمن
السيليكا (frustule). بالإضافة إلى المساهمة الهامة في الإنتاجية الأولية التي تدعم دورة الشبكة الغذائية في الماء ،
تستخدم الدياتومات على نطاق واسع كمؤشرات حيوية للجودة المائية بسببدورة الحياة القصيرة ومستوى الحساسية
كذلك في إنتاج الكتلة الحيوية والوقود الحيوي. تم العثور على الدياتومات وتهيمن في المياهللظروف البيئية المتغيرة في المياه ، و
كذلك البحر. كان الغرض من هذه الدراسة هو تحديد تنوع أنواع الدياتومات الإبليثيالعذبة وة في نهركاليسات. هذا
البحث هو نوع من البحث الوصفي الكمي مع طرق الاستكشاف. تم أخذ عينات الدياتومepilithicعن طريق أخذ
كيزة صخرية بقياسعينات هادفة في ثلاث محطات مع ثلاثة تكرار. مأخوذة خمس بذور من ر100سم². كان تحليل
البيانات المستخدم في الدراسة هو الوفرةومؤشر التنوع (H') ومؤشر الهيمنة (C'). بدعم من عوامل الفيزياء الكيميائية
للمياه المرصودة هي درجة الحرارة ، ودرجة الحموضة ، والأكسجين المذاب ، والجسم ، وسمك القد ، وTDS، والنترات
، والفوسفات. تحليل العلاقة بين مؤشر التنوع والمتغيرات الفيزيائية والكيميائيةمع تجميعتطبيقات4.03السابقة. وجدت
نتائج الدراسة10أنواع من جنس المشطورةepilithic. تم العثور على وفرة من أنواع جنس دياتوميepilithicعلى
نطاق واسع في شكل جنسGomphonemaوNaviculaكانت قيم مؤشر التنوع. و1.94(المحطة1)
و1.89(المحطة2) و1.54(المحطة3.)كانت قويممؤشر الهيمنة0.17(المحطة1) و0.15(المحطة2) و0.14
(المحطة3). درجة الحرارة ، درجة الحموضة ،TDS، سمك القد ، النترات والفوسفات تلبي فئة معايير الجودة من الدرجة
ال
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
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
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