1,721,402 research outputs found
Permeability identification of porous media in resin transfer moulding
No full textSIGLEAvailable from British Library Document Supply Centre-DSC:DXN049188 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
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
Zhan dan xing jun ye de da chi du zi zu zhi yan jiu
No full textPh.D.Active matter consists of units that can generate mechanical work by consuming energy. This includes living systems such as assemblies of motile bacteria and animal tissues, biomolecules driven by molecular motors, and suspensions of synthetic self-propelled particles. A central question in active matter study is to understand and control the self-organization of these systems in space and time. In this dissertation I present two novel mechanisms of spatial-temporal self-organization in bacterial active matter. First, I will describe our discovery of a new form of biological collective oscillation, which does not require local oscillators and arises from weak synchronization of random trajectories. This is in stark contrast to collective oscillations in multicellular systems studied to date. In the second part of my dissertation, I will show that manipulating fluid viscoelasticity provides a simple means to simultaneously control the spatial-temporal self-organization of bacterial active matter. The findings advance the understanding of bacterial behavior in complex fluids and demonstrate for the first time that rheological properties can be harnessed to control active matter self-organization. Taken together, our results will fuel the development of non-equilibrium physics and may shed light on the study of other types of active fluids and active gels, with potential application in fabricating adaptive self-driven devices or materials.活性物質由那些可以通過消耗能量來產生定向運動的單元構成。這包括例如運動細菌群落或動物組織的生命體系，由分子馬達驅動的生物分子，以及人工合成自驅動粒子的懸浮液。活性物質研究中的核心問題是理解和控制這些體系在時間、空間上的自組織。在這篇論文中，我介紹了兩種新穎的關於細菌型活性物質在空間-時間上的自組織機制。首先，我會闡述我們發現的一種新型的生物集體振動。這種集體振動不需要局域振子且源自隨機軌跡的弱同步藕合作用。這和目前已知研究中的集體振動是截然相反的。在論文的第二部分，我會闡明調節流體粘彈性为同時控制細菌型活性物質在空間-時間上的自組織提供了一個間單的方法。這些發現增進了對於復雜流體中細菌行為的理解，並且首次揭示了流變性質可以被利用來控制活性物質的自組織。綜合來看，我們的研究結果有助於非平衡態物理的發展，以及闡明關於其他有潛力被用來製造适應性自驅動裝置或材料的活性流體和膠體的研究。Liu, Song = 粘彈性菌液的大尺度自組織研究 / 劉松.Thesis Ph.D. Chinese University of Hong Kong 2018.Includes bibliographical references (leaves 90-97).Abstracts also in Chinese.Title from PDF title page (viewed on …).Liu, Song = Zhan dan xing jun ye de da chi du zi zu zhi yan jiu / Liu Song
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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