1,720,960 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
Security requirements and practices for smart grids
No full textThe electricity sector has a huge role in decarbonization of the energy system in order to meet climate targets and achieve net zero emission goals in different countries across the world. Present day electric power systems are increasingly dependent on less carbon intensive renewable energy sources for power generation. Rapid penetration of renewables leads to an increase in distributed generation and active consumer participation resulting in complex interactions within the power system. Therefore, traditional electric power grids are evolving to smart grids with the help of information and communication advancements. As a result, there is greater integration of Information Technology (IT) and Operational Technology (OT) actors, inclusion of clean energy sources, improved connectivity, sustainable supply and demand balance management of power etc. However, this sustainable transition gives rise to new attack points for malicious actors, who intend to disrupt the functioning of these smart grids. Therefore, this study aims to identify and analyze the most significant risks to smart grids in the next 10 years. The methodology for this research is two-fold: reviewing state-of-the-art research publications on smart grid security and conducting a semi-qualitative power grid security assessment through interviews with experts across countries. False Data Injection (FDI), Denial of Service (DoS) and supply chain attacks are some of the most important threats according to these methods. Finally, findings from the two research methods are compared to provide a comprehensive overview of the most significant risks to smart grids
Bioflex - Synergies with electrolytical hydrogen
No full textThe Bioflex project investigate the compatibility of operation between a two-stage bioprocess and an electrolyser to produce Hydrogen and Methane. Process water from Nordic Sugar in Örtofta, a sugar industry is utilized in the bioreactors. AP2 investigates energy balances and upscaling of the bioprocess, technical compatibility and synergistic effects between electrolysis and the two-step bioprocess. This assignment examines how waste heat from electrolysis can be used to pre-heat process water before entering the bioprocess reactors. This study analyses three possible configurations of scaled up installation, with a 5MW Alkaline electrolyser and 20m3 bio-Hydrogen reactor and 100m3 bio-Methane reactor. The overall efficiency in combined operation mode and stand-alone operation of electrolyser when connection with a high temperature District Heating Network (DHN) are comparable 86-88%. However, under both these cases come with an installation of heat pump which is cost intensive. For electrolyser sizes less than 5MW, water treatment of the seasonal effluent from bioreactors is less energy efficient. Based on pilot study in AP1, the 20m3 bio-Hydrogen reactor can produce similar amount of Hydrogen as the 5MW electrolyser. The purities of these two methods are different, hence the overall dimensioning of the system would depend on demand and end user for these products. In the present scenario, with seasonal availability of process water for the bioprocess, the percentage of overlapping working hours of electrolyser and bioreactors varies between 25% to a maximum of 40%. Higher operating hours for bioreactor is recommended to achieve maximum efficiency and consistency of supply
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
Bioflex - Synergies with electrolytical hydrogen
No full textThe Bioflex project investigate the compatibility of operation between a two-stage bioprocess and an electrolyser to produce Hydrogen and Methane. Process water from Nordic Sugar in Örtofta, a sugar industry is utilized in the bioreactors. AP2 investigates energy balances and upscaling of the bioprocess, technical compatibility and synergistic effects between electrolysis and the two-step bioprocess. This assignment examines how waste heat from electrolysis can be used to pre-heat process water before entering the bioprocess reactors. This study analyses three possible configurations of scaled up installation, with a 5MW Alkaline electrolyser and 20m3 bio-Hydrogen reactor and 100m3 bio-Methane reactor. The overall efficiency in combined operation mode and stand-alone operation of electrolyser when connection with a high temperature District Heating Network (DHN) are comparable 86-88%. However, under both these cases come with an installation of heat pump which is cost intensive. For electrolyser sizes less than 5MW, water treatment of the seasonal effluent from bioreactors is less energy efficient. Based on pilot study in AP1, the 20m3 bio-Hydrogen reactor can produce similar amount of Hydrogen as the 5MW electrolyser. The purities of these two methods are different, hence the overall dimensioning of the system would depend on demand and end user for these products. In the present scenario, with seasonal availability of process water for the bioprocess, the percentage of overlapping working hours of electrolyser and bioreactors varies between 25% to a maximum of 40%. Higher operating hours for bioreactor is recommended to achieve maximum efficiency and consistency of supply
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
- …
