1,720,994 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
차세대 시퀀싱을 이용한 가축들의 메타제놈에 대한 연구
Full text link학위논문 (박사)-- 서울대학교 대학원 : 농생명공학부, 2015. 2. 김희발.This study investigated metagenomic characteristics of microbial communities in the domesticated poultry through the combination of next generation sequencing (NGS) and bioinformatic pipelines. Among various kinds of commercial animals, this study placed its focus on the bovine rumen, chicken feces and goat rumen fluid, respectively. In more detail, structure of microbial population in the various samples of rumen (bovine/goat) and feces (chicken) was analyzed and then, its phylogeny and specific gene such as cellulase was identified. Sequencing the genomes of rumen microbes, determining the role of the genes and identifying its potential applications are the great deal for researchers to understand the microbiology of the rumen. Chicken feces have generally been known to be closely associated with contamination of poultry and health safety. Goats have unique habits, which include feeding on unconventional tree leaves. Thus, goats are expected to host distinct bacterial communities with cellulose-degrading enzyme activity in their rumen.
In cahpter1, basic background and necessity were reviewed the series of worked in this doctoral dissertation, which showed its pivotal role of microbiomes in the commercial animal in various respects. Furthermore, metagenomics and genetics/genomics can provide a significant clue to these microbial population.
In chapter 2, the microbial community structure of rumen solid and rumen liquid of cattle rumen was analyzed using high-throughput pyrosequencing of 16S rRNA gene PCR amplicons and a subsequent bioinformatics pipeline. A 16S rRNA gene clone library identified abundant communities belonging to specific bacterial groups in the rumen. The diversity results suggested that the specific bacterial groups was found in both samples with a slight difference. Bacteroidetes, Firmicutes and Fibrobacteria were present in higher concentrations in rumen solid than in rumen liquid, indicating their major role in the degradation of plant fiber. Other groups identified include Proteobacteria, which are responsible for playing a greater role in rumen metabolismMollicutes class of Firmicutes, which metabolizes imported sugars to short chain fatty acidsand Prevotellacea, which are crucial for the breakdown of proteins. These biological function of identified microbial groups mentioned above have also coincided with other previous studies.
In chapter 3, fecal microbial community of chicken was quantitatively analyzed using next generation sequencing (NGS) techniques and bioinformatic analyses with metagenomic tools such as MOTHUR, MEGA6 etc. during a relatively short growth time of 35 days. The diversity of microbial community at the genus level increased during the five week growth period (from 30 to 87 identified genera). Despite the diversity, only a few dominant bacteria groups (over 80%) were identified in each fecal sample, which were completely different from each other. These results suggested that chicken fecal microbiome is a dynamic system with a differentiated population structure under a restricted number of higher taxa.
In chapter 4, protein domains with cellulase activity in goat rumen microbes were investigated using Illumina sequencing and bioinformatic analyses with metagenomic tools such as METAIDBA, HMMER and Interproscan etc. After the complete genome of the goat rumen microbe was obtained using a shotgun sequencing method, 217,892,109 pair reads were filtered using METAIDBA. These filtered contigs were assembled and annotated using blastN against the NCBI nucleotide database. As a result, a microbial community structure with 439 genera was analyzed, among which Prevotella and Butyrivibrio were the dominant groups. In parallel, 201 sequences related with cellulase activities (EC.3.2.1.4) were obtained through blast searches using the enzyme.dat file provided by the NCBI database. 28 protein domains with cellulase activity were identified using the HMMER package. Cellulase activity protein domain profiling showed that the major protein domains such as lipase GDSL, celluase, and Glyco hydro 10 were present in bacteria with strong cellulase activities. Furthermore, correlation plot clearly displayed the strong positive correlation between some protein domain groups, which was indicative of microbial adaption in the goat rumen based on feeding habits. Recent studies clearly reported that intestinal microbome was closely correlated with the traits of host such as obesity and growth. Therefore, it can be easily expected that analysis of intestinal microbial structure in commercial animals can provide an insight to the livestock industry in terms of fiber digestion and growth.ABSTRACT..................................................I
CONTENT..................................................V
LIST OF TABLES........................................VI
LIST OF FIGURES......................................VIII
LIST OF APPENDIX.....................................XI
CHAPTER 1. LITERATURE REVIEW................1
1.1 SEQUENCING TECHNIQUES....................2
1.2 METAGENOMICS..................................28
1.3 METAGENOMIC APPROACH IN DOMESTIC ANIMALS...................................................38
CHAPTER 2. MICROBIAL COMMUNITY STRUCTURES OF RUMEN SOLID AND LIQUID IN CATTLE.........44
2.1 ABSTRACT...........................................45
2.2 INTRODUCTION....................................46
2.3 MATERIALS AND METHODS..................49
2.4 RESULTS.............................................58
2.5 DISCUSSION........................................69
CHAPTER 3. ANALYSIS OF BACTERIA COMMUNITY CHANGE IN CHICKEN FECES DURING THE REARING PERIOD USING NEXT GENERATION SEQUENCING............................................71
3.1 ABSTRACT...........................................72
3.2 INTRODUCTION....................................73
3.3 MATERIALS AND METHODS..................75
3.4 RESULT...............................................80
3.5 DISCUSSION........................................87
CHAPTER 4. METAGENOME ANALYSIS OF PROTEIN DOMAIN COLLOCATION WITHIN CELLULOSE GENES OF GOAT RUMEN MICROBES..........................91
4.1 ABSTRACT..........................................92
4.2 INTRODUCTION...................................94
4.3 MATERIALS AND METHODS.................96
4.4 RESULTS...........................................101
4.5 DISCUSSION......................................110
GENERAL DISCUSSION............................112
REFERENCES.........................................114
APPENDIX..............................................138
요약(국문초록)........................................155Docto
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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