1,720,954 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
The 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
“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
We 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
We 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
Особенности структурно-механических свойств нефтяных дисперсных систем
The present-day challenge of oil industry is gradual decrease of conventional light crude reserves and increased consumption of hard-to-recover heavy crude. The goal of thesis is to establish change regularities of structural-mechanical properties and thermody-namic activation parameters for viscous flow in oil dispersed systems (ODS) of various composition (paraffin and naph-thene and aromatic bases) from Timan-Pechora petroleum region (Russia) in a broad range of temperatures and shear rates and under the exposure of external fields, and also to experimentally determine phase diagrams of binary hydrocarbon systems (nonadecane – decaline and nonadecane – naphthalene) modeling ODS mixture of completely opposite nature. Study results can be used for predicting and preventing structure formation during production, transport and storage of ODS's with various content of solid paraffins, resins and asphaltenes.:INTRODUCTION
CHAPTER 1. ANALYSIS OF THE MODERN CONDITION AND METHODS OF RESEARCH OF HEAVY OILS
1.1 The current state of hydrocarbon reserves
1.2 Oil classification
1.3 Oil chemical composition
1.4 Influence of components of oil dispersed systems on their low-temperature properties
1.5 Structuring in oil dispersed systems
1.6 Rheological models of oil dispersed systems
1.7 Evaluation of the thermodynamic characteristics of the activation of the viscous flow of oil dispersed systems
1.8 Chemical composition and structural-mechanical properties of the oils from Timan-Pechora province
1.9 Modern methods of influencing the structure and properties of oil dispersed systems
CONCLUSIONS TO CHAPTER 1
CHAPTER 2. OBJECTS AND METHODS OF RESEARCH
2.1 Objects of research
2.1.1 Physical and chemical properties of oils from Timan-Pechora province
2.1.2 Physical and chemical properties of high-boiling fractions from Timan-Pechora province
2.1.3 Physical and chemical properties of light distillate from heavy oil and individual hydrocarbons (nonadecane, decaline and naphthalene)
2.2 Research methods
2.2.1 Methods of conducting research on the physicochemical properties of oils
2.2.2 Methods of determining the group hydrocarbon composition of oil dispersed systems
2.2.3 Method for determination of low-temperature properties of binary systems
2.2.4 Methods for determining the structural and mechanical properties of oil dispersed systems from Timan-Pechora province
2.2.5 Characteristics of sources of external impact on oil
2.2.6. Methods of processing samples by external influence
CONCLUSIONS TO CHAPTER 2
CHAPTER 3. INVESTIGATION OF LOW-TEMPERATURE PROPERTIES OF BINARY AND OIL DISPERSED SYSTEMS
3.1 Justification of the computational models used to describe the phase diagrams of binary systems
3.2 Investigation of low-temperature properties on model binary systems of nonadecane-decaline and nonadecane-naphthalene
3.3 Investigation of the low-temperature properties of a light distillate mixture (NK-330 °C) of heavy naphthenic-aromatic Yarega oil and light paraffin haryaga oil
CONCLUSIONS TO CHAPTER 3
CHAPTER 4. INVESTIGATION OF CHANGES IN STRUCTURAL AND MECHANICAL PROPERTIES OF OILS AND THEIR HIGH-BOILING FRACTIONS UNDER EXTERNAL EXPOSURE
4.1 Determination of the type of liquid in oil dispersed systems at different temperatures
4.2 Determination of the dependence of the ultimate shear stress of oil dispersed systems on temperature
4.3 Investigation of the thixotropic properties of the oils from Timan-Pechora province
4.4 Impact of external fields on the rheological properties of heavy oil
4.5 Effects of external fields and diluents on the rheological properties of heavy oil
CONCLUSIONS TO CHAPTER 4
CHAPTER 5. RESEARCH OF THERMODYNAMIC CHARACTERISTICS OF THE ACTIVATION OF A VISCOUS FLOW OF OILS AND HIGH-BOILING FRACTIONS UNDER DIFFERENT CONDITIONS (TEMPERATURES AND SHEAR RATE)
5.1 Liquidus temperature and activation energy of viscous flow of oil dispersed systems
5.2 Thermodynamic characteristics of the activation of a viscous flow of oil dispersed systems
5.3 Investigations of the strength of intermolecular interaction in oil dispersed systems as a function of the frequency of molecule jumps
5.4 Change in the activation energy of viscous flow of oil dispersed systems with increasing shear rate
5.5 Changes in thermodynamic characteristics of the activation of a viscous flow of oil dispersed systems with increasing shear rate
5.6 Changes in the strength of intermolecular interaction in oil dispersed systems with increasing shear rate
CONCLUSIONS TO CHAPTER 5
CONCLUSION
LIST OF ACCEPTED REDUCTIONS
BIBLIOGRAPHY
ANNEX 1. Act of introduction of development in LLC LUKOIL-Ukhtaneftepererabotka
APPENDIX 2. Patent of the Russian Federation 'Method of preparation of heavy oil for refinin
koamabayili/VECTRON-author-checklist: VECTRON author checklist
We 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.
Author-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
In 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
- …
