1,720,965 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
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
What is Nanoscience?\u27 - A Hermeneutic Phenomenological Study of Nanoscience Researchers\u27 Experiences
Get PDFNanoscience and nanotechnology have been described as a research area that integrates many scientific and engineering disciplines. However, the integration of disciplines is so complex that the disciplinarity of nanoscience and nanotechnology remains undefined. As a result, the nanoscience and nanotechnology area is viewed as multidisciplinary, or interdisciplinary science, or even as a separate discipline and there is no consensus regarding its disciplinarity. The previous studies conducted in order to describe the disciplinarity associated with this area have focused mainly on political, institutional and external factors while the cognitive aspects of disciplinarity of nanoscience and nanotechnology are still less understood. As a consequence, what is needed from the curricula and training programmes to ensure the growth of this area is not fully understood. When there are strong predictions about the need for an extensive workforce in the nanoscience and nanotechnology area but the disciplinarity associated with it is less understood, it can have an adverse effect on the future of this area. This research fills the gap by aiming to achieve a greater understanding of the nanoscience and nanotechnology area and its associated disciplinarity. This research focused on examining postgraduate researchers’ experiences of nanoscience and nanotechnology research to explore the disciplinarity, knowledge, skills and competences associated with nanoscience research so that a deeper understanding of this area can be achieved. This research was conducted using hermeneutic interpretive phenomenological methodology to collect and interpret data from twenty five individual semi-structured interviews with postgraduate researchers working in the nanoscience and iii nanotechnology area. The research methodology was influenced by Max van Manen’s ideas of hermeneutic interpretive phenomenology and it was reshaped to best suit the research context and purpose. Examining the researchers’ experiences of nanoscience research made it possible to understand how postgraduate researchers perceive, understand and conduct nanoscience research. Further, the examination portrayed what knowledge, skills and competences the postgraduate researchers have applied when working in this area. The findings from this interpretive study revealed that the postgraduate researchers experienced the nanoscience and nanotechnology area essentially as a ‘boundary spanning’ experience which described their skills of crossing the disciplinary boundaries in order to understand nanoscience research. Furthermore, the researchers experienced mapping, i.e. their research was evaluated and judged by the researchers from other disciplines. The findings also indicated that the nanoscience and nanotechnology research displayed characteristics of both multidisciplinarity and interdisciplinarity and therefore they suggested that promoting any one particular approach and aiming to develop the researchers for either a multidisciplinary or interdisciplinary platform would not be appropriate for this area. The postgraduate researchers needed the skills to work together with researchers from other disciplines and become good at boundary spanning in the nanoscience area. The interpretive findings were taken back to the postgraduate researchers through a quantitative survey and their agreement with the interpretations further enhanced the credibility of this hermeneutic phenomenological study. The hermeneutic phenomenological research gave a new way to explore the complex nanoscience area by examining the postgraduate researchers’ experiences and this research provided an enhanced understanding of the nanoscience and nanotechnology area and its disciplinarity
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Investigation of Velocity Profiles in Anatomically Realistic Renal Artery Flow Phantoms by Physiological Flow Experimentation
Get PDFRenal Artery stenosis is one of the major causes of curable renovascular hypertension.An early investigation of renal artery stenosis helps in the management of renovascular hypertension by alternative, less-invasive methods such as drug treatments, thereby reducing the risk involved in the surgery. Therefore an early investigation of renal artery stenosis has been always an attractive goal for the physicians. The renal artery stenosis affects the blood velocity profile in the renal artery. These profiles can be investigated by quantitative Doppler Ultrasound measurements obtained by flow experimentations and can be used as a tool for the identification of renal artery stenosis. In the present study, the velocity profiles produced in anatomically realistic renal artery wall-less flow phantoms were investigated by physiological flow experimentations. The renal artery flow phantoms mimic renal vasculature anatomically and acoustically as well as representing symmetrical (30%, 50% and 70%) and asymmetrical (25%, 35% and 45%) stenosis conditions. A physiological flow of velocity between 2 – 40 cms-1 was produced in each renal artery flow phantom. The blood mimicking fluid (BMF) velocity was determined at regular axial and radial intervals of 1mm, using Siemens Antares Ultrasound system with a broadband curvilinear transducer (C5-2). The physiological velocity profiles in each phantom were investigated. By studying the characteristics of the physiological velocity profiles in theanatomically realistic renal flow phantoms, a greater understanding of renal flow behavior in the normal and diseased conditions can be obtained. These flow characteristics can serve as a basis for identification and quantification of the degree of stenosis. The flow characteristics in the investigated velocity profiles may lead to earlier detection of renal artery stenosis using noninvasive ultrasonic methods. Subcutaneous fat is a well documented limitation of renal imaging. Recent studies have indicated that the subcutaneous fat introduces an error in the maximum velocity estimation andthereby in the quantification of degree of stenosis. In the present thesis, the effect of a fat mimicking layer on: a) physiological velocity profiles and b) the shape and profile of Spectral Doppler velocity waveforms was studied. The knowledge of how the subcutaneous fat affects the physiological waveforms and thereby the clinical diagnosis is important while using the physiological flow waveforms and the physiological velocity profiles as a criteria for identification of renal artery stenosis
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