1,721,054 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Recent CFD Research in the SimLab FSE
Full text linkThis talk introduces the SimLab concept of the Jülich Supercomputing Center (JSC) and the Jülich Aachen Research Alliance, High Performance Computing (JARA-HPC) and summarizes recent research activities of the SimLab “Highly Scalable Fluids & Solids Engineering” (SLFSE). In more detail, the results of CFD simulations in the field of human respiration, i.e., for the simulation of the flow in the human nasal cavity and particle depositions in the human lung using a Lattice-Boltzmann and a coupled Lagrange particle solver is presented. Furthermore, recent advances in the simulation of aircraft noise are given. Finally, prospective research topics and their challenges, i.e., the efficient simulation of respiratory sleep disorders and shape optimizations of shevrons for noise reduction of aircraft engines are discussed
Nasal cavity flows using Lattice-Boltzmann methods on high performance computers
No full textWithin this work the flow in the human nasal cavity is investigated using Computa-tional Fluid Dynamics (CFD) methods. Different approaches exist to numerically sim-ulate flows, e.g., Finite-Volume Methods (FVM), and Finite-Element Methods (FEM). However, when it comes to handling complex and intricate geometries like the nasal cavity, the Lattice-Boltzmann Method (LBM) excels due to its conductive paralleliza-bility and its straight-forward way to treat arbitrarily shaped boundaries as they ap-pear in biomedical applications. Therefore, such an LBM is used to simulate and analyze the flow in three pathologically distinct nasal cavities in depth to understand the physics of such flows. A new categorization procedure for nasal cavities based on the respiration and heating capability is established. This categorization method is substantiated by the analysis of the inspiratory pressure loss, wall-shear stress, heat flux, and existing vortical structures and their influence on the aforementioned parameters. Such a classification integrates into Virtual Surgery environments, supports an a priori decision process on surgical interventions, and is a potential method to evaluate surgical rhinological procedures by juxtaposing before and after surgery results. To resolve fine-grained flow structures in such simulations and to accurately predict the wall-shear stress and heat flux, computational meshes with a large number of cells are necessary. The construction of such meshes is a challenging task due to the restricted amount of available local memory. Additionally, high grid resolutions require a generation in parallel. The increase of computational power and efficiency of today's CPUs in multi-core distributed-memory systems in High Performance Computing (HPC) offers new chances in CFD. This enables to efficiently generate computational meshes in parallel and to perform unsteady high-fidelity simulations of complex flows in intricate geometries in a reasonable amount of time. In this thesis a new parallel and robust algorithm to automatically generate hierarchical Cartesian meshes, as they are used by the LBM, is presented. The algorithm is analyzed in its parallel performance on HPC systems and scales up to hundreds of thousands of processes. It overcomes the dependence on manual input or an imbalance on the process level which other approaches suffer from. This way, the algorithm enables to generate O(10¹¹) cells in only a few seconds
- …
