1,720,980 research outputs found
Social simulation comparison in arbitrary problem domains: first steps towards a more principled approach
Full text linkWe outline a simulation development process, backed by a software framework, which focuses on developing and using a partial conceptual model as a ‘lens’ to compare and possibly re-implement existing models in a chosen problem domain (as well as to design new models). To make this feasible for existing models of arbitrary structure and background social theory, we construct our (partial) conceptual model in a way that acknowledges that it is a base representation which any individual model will typically add detail to, and abstract away from, in various ways which we argue can be formalised. A given model’s design is fitted to the conceptual model to capture how its structural architecture (and selected aspects of the system’s state and driving processes) map to the conceptual model. This fit can be used to produce incomplete skeleton code which can then be extended to produce a simulation. Along the way, we discuss how the field of robust decision-making provides a useful context for this, and how it differs from other approaches. This is inevitably a preliminary approach to a broad and difficult problem, so we end by discussing some of the main issues and what might be needed next
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
System development issues concerning integration of wind generation in Great Britain
No full textThe European Union has committed itself to sourcing 20% of its energy from renewables by 2020. Britain's excellent wind resource is expected to make a significant contribution to this target, not least from Scotland and the north of England. However, exploitation of this resource requires appropriate and timely development of the GB electricity transmission system. This depends on appropriate market signals that communicate the need for transmission investment, something that many in the industry in Britain believe current arrangements do not adequately provide. This paper describes a number of proposals currently under discussion, outlines their interactions and highlights some of the key issues currently being debated
Security criteria for planning and operation in the new GB market
No full textThis paper summarises the overall objectives of the British Electricity Trading and Transmission Arrangements (BETTA) introduced in April 2005, describes the motivation for the development of a single GB Security and Quality of Supply Standard (GB SQSS), outlines the basic principles of the GB SQSS, describes the main differences between the different standards used by the three GB transmission licensees prior to BETTA and shows how these differences have been reconciled into a single Standard that takes into account both investment planning issues and system operation, including weather-related risk management. BETTA was introduced with the stated purpose of allowing generators and suppliers throughout Great Britain to trade in unified markets accessed through consistent and non-discriminatory transmission arrangements. Fundamental to the co-ordination of network investment planning, outage planning and real-time system operation on a GB basis has been the development of a single GB SQSS that is transparent to all transmission stakeholders and can be consistently applied by the Scottish licensees that remain responsible for network investment in Scotland as well as by the GB System Operator and owner of the transmission system in England and Wales – National Grid. The GB SQSS superseded and harmonised a variety of security standard documents used prior to BETTA. There were some differences between the pre-BETTA standards in respect of secured events, the event consequences that should be avoided, the wording of security criteria and their interpretation. For example, the scope and presentation of double circuit security in operational timescales appeared very different in Scotland from that in England and Wales. The great majority of the differences were successfully resolved – for example, resolution of the double circuit security differences was achieved through recognition of shared attitudes to risk on the part of the three GB transmission licensees. As a result, the GB SQSS is believed to be clear and to afford consistent application thus minimising the scope for unequal treatment of different customers or undue risks to system security
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
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