1,720,968 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
Energy transition pathway towards large share of renewable energy in the power, heat and transport sectors for Bangladesh
Get PDFBangladesh is one of the fastest developing countries with 166 million people residing in an area of 147,570 km2 with the population expected to grow to about 237 million by 2045. Consequently, the demand for energy will grow enormously with rising population and increasing purchasing power. On the other hand, it is a country which is extremely vulnerable to the devastating impacts of climate change like the rising sea level and irregular monsoons. Currently, Bangladesh depends on domestic and imported fossil fuels to satisfy its energy needs. However, it has an enormous potential of renewable energy, especially solar energy. More than 95% renewable energy share by 2045, is possible in the energy sector as shown by this research. This is possible by utilizing indigenous renewable energy available in Bangladesh, making it completely independent of energy imports, and having universal access to energy. The LUT Energy System Transition Model is used to simulate a pathway towards large of share of renewable energy in 5-year time steps from 2020 to 2045. By 2045, the share of renewables in the entire energy system reaches about 99%, with the majority of generation from solar PV. The levelised cost of electricity first peaks in 2025 to about 88 €/MWh, then starts decreasing and 2045 it drops to 36 €/MWh. The price on GHG emissions accelerates the energy transition, however cost competitiveness of renewables forces a decline in fossil fuel usage in the energy system. Solar photovoltaics with a share of 99% plays a key role in 2045. As a result, GHG emissions decrease from a peak of 126 MtCO2eq in 2030 to 18 MtCO2eq in 2045. An energy transition to a sustainable and secure energy system for all by 2045 is both technically possible and economically feasible
NANOSCALE TRANSPORT PHYSICS: MOLECULAR INSIGHTS INTO FLUID FLOW AND INTERFACIAL DYNAMICS
No full textNanoscale transport physics: Molecular insights into fluid flow and interfacial dynamics (May 2025) Md Masuduzzaman Nanoscale transport physics is governed by molecular interactions that alter the behavior of fluids under extreme confinement. In channels narrower than a few nanometers, continuum-based models are no longer sufficient to describe key transport phenomena such as electroosmotic flow (EOF), as they fail to capture ion-specific effects, discrete charge distributions, and interface-dominated dynamics. Understanding these deviations requires atomistic approaches that can resolve the structure, energetics, and motion of confined water and ions at the molecular scale. This study employs molecular dynamics (MD) simulations to investigate EOF in aqueous NaCl solutions confined within single-layer graphene nanochannels with heights below 5 nm. Simulations are performed under varying surface charge densities and applied electric fields to examine how confinement, interfacial structure, and electrostatic interactions affect the fluid and ion transport properties. The results reveal significant deviations from classical Poisson-Boltzmann and Helmholtz-Smoluchowski predictions. In particular, ion distributions near charged surfaces become asymmetric due to disrupted hydration structures, while the local viscosity increases due to layering effects, leading to suppressed and nonlinear flow profiles. Spatial variations in viscosity, diffusivity, and charge density are extracted from the MD simulations and used to refine the continuum- level Poisson-Stokes framework. A revised definition of the solid/fluid boundary, based on molecular layering rather than geometric assumptions, improves the accuracy of velocity and electroosmotic mobility predictions across a range of confinement and field conditions. The modified model captures electro-viscous effects and interfacial resistance that arise under strong confinement and high electric field conditions. The results identify two distinct regimes of EOF behavior: one consistent with linear electrokinetic theory under weak confinement, and another governed by nonlinear interactions and molecular ordering near interfaces. These insights advance the understanding of nanoscale fluid transport by bridging atomic-level phenomena with macroscopic flow behavior. The findings provide a quantitative framework for modeling EOF in nanofluidic systems and support the design of electrokinetic technologies in applications ranging from ionic separation and sensing to semiconductor device interfaces.Docto
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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