1,720,956 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
A CARBON CONSTRAINED SOCIETY: THE ECONOMICS OF CARBON CAPTURE, UTILIZATION AND STORAGE
No full textTraditionally carbon dioxide (CO2) emissions has been viewed and treated as a “bad” rather than a “good”. This mental model is of little surprise due to a well-established consensus on carbon dioxide as a pollutant constraining the sustainability of economic and social development at a global scale.
In the world where so many actors are preoccupied with shifting towards a low- carbon economy the very idea of carbon dioxide being a commodity (literally and not in the form of carbon caps or quotas trade, in which case a “commodity” is in fact the right to emit carbon, which is in its essence a very different concept) might be a big of a statement. However, this idea is not a mere perspective but a reflection of an already existing and developing market for CO2 with well-defined supply and demand sides. Paradoxically, the supply side of this nascent market was originally motivated by the intention to decrease CO2 emissions but now is giving rise to CO2 as a commodity. Ironically, the demand side (CO2 buyers) is the part of the market which is “hungry” for the commodity not being supplied in a demanded quantity.
This thesis provides a conceptual overview of the market for CO2 where the supply is coming from CCUS industry and the demand originates in the enhanced oil recovery (EOR) industry. The paper is based on the research project (the working title “CCUS Market Dynamics”) conducted recently as a part of master thesis and currently PhD research. The project started in late 2013 as a system dynamics modelling effort focused on specific problem of CCUS technologies commercialization. However, eventually the problem necessitated the construction of the model of an integrated CCUS-EOR system, similar to the demand-pull market for carbon dioxide currently developing in the Permian Basin, TX.
As viewed by the author, it is the market perspective towards CO2 which turned out to be the most insightful part and result of the modelling process. The system dynamics method and its endogenous approach appeared to be instrumental in grasping intricate interconnections between various dispersed (at least within conventional mental models) elements of the market for this new commodity.
This thesis presents the first stone towards a comprehensive research on the feedback mechanisms between the CCUS and EOR industries which shape the CO2 market. It is the author’s highest aspiration to provoke interest to this topic and create momentum for its further progression
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
Carbon capture utilization and storage market dynamics: Matching CO2 supply and demand for enhanced oil recovery
Get PDFThis thesis describes the project, which is a part of a wider collaboration between the University of Bergen, Norway and the University of North Dakota (UND) and the Institute for Energy Studies (IES), US established in March 2013. The project was performed by Eduard Romanenko, the author of this thesis, together with his European Master in System Dynamics colleague Julian Andres Gill Garcia, who focused on a different but related aspect of the issue, under the supervision of Prof. Pål Davidsen (University of Bergen) and Scott T. Johnson, a Principal Advisor in the IES. The fieldwork was conducted in March-May 2014 in Grand Forks, ND. There is currently a significant number of carbon capture, utilization, and storage (CCUS) technologies under development and assessment in the US and globally. Most of these technologies have been tested in small scale. The IES has developed and successfully tested the UND technology called CACHYS. Yet, the further commercialization of this and similar technologies is constrained by unfavorable economics of high costs and uncertain potential benefits. On the other hand, there is the CO2-Enhanced Oil Recovery (EOR) industry whose current development is constrained by the lack of CO2 supplies. For the CCUS developers like the IES, CO2-EOR represents an excellent source of demand, which has the potential to pay additional costs of CCUS commercialization. The challenge is that there is a gap between the maximum willingness to pay for CO2 by EOR operators and the costs of CO2 capture by the CCUS. Yet, there is a potential for costs reduction attributed to anticipate learning effect in the CCUS industry. To study the problem, the system dynamics model of an integrated CO2-EOR-CCUS system, similar to the demand-pull market for carbon dioxide currently developing in the Permian Basin, TX, has been constructed. By making explicit the key feedback structure behind the CO2-EOR-CCUS system, the model reveals the reinforcing mechanisms that can potentially generate the self- sustaining growth and provides a simulation environment where policies aimed at activating those mechanisms can be tested on their robustness. The thesis is structured as following. Chapter 1 defines the context, problem, research objectives and research questions. Chapter 2 describes the structure of the model both from stock-and-flow and feedback perspective. Chapter 3 is devoted to the behavior that the model produces. Chapter 4 establishes the confidence in the model through validation analysis. Chapter 5 deals with policy design and testing. The thesis concludes with the summary of results, a discussion on limitations and directions for further work
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
