1,721,658 research outputs found
Limits to GeoComputation
No full textWhen the first GeoComputaion (GC) conference took place in 1996, the computational environment was much more limited. With increased computational power and data storage, we can now model millions of agents and begin to tackle the challenges associated with big spatial data streams. In light of the many changes that have taken place since the 'GeoComputation' book first appeared (Openshaw and Abrahart 2000), this chapter considers what the current limitations to GC are right now. In the first edition, Kirby (2000) identified a series of limitations that included inherent predictability and the need to use additional computing power to build more complex models, estimate uncertainty and improve the process of model calibration and validation, framed within the context of the earth and environmental sciences. This chapter takes a broader view that encompasses both physical and human geographical domains. Five main limitations are discussed: computational power, data-led limitations, limitations in predictability and understanding, computation or artificial intelligence (AI)-led limits and limitations as a result of uncertainty. Although some of these limitations reprsent real barriers, others can simply be viewed as exciting challenges that require further research within and beyond the field of GC
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
Expert systems for planning and spatial decision support
No full textExpert systems (ES) are a well-established technology for capturing expert knowledge and emulating decision-making, stemming from early research in artificial intelligence. ES represent one of many approaches in GeoComputation (GC) for solving ill-structured or semi-structured problems, of which there are many examples in the geospatial domain. This chapter provides a historical and technical overview of ES development including when ES are appropriate methods to use and what tools are available for their creation. Spatial ES are then considered in more detail, focusing on their integration with geographic information systems (GIS), and an example is provided which was developed to support the process of planning for land consolidation. Here, the ES is one component of a larger integrated planning support systems that generates alternative land redistribution plans under a range of potential scenarios. Using an actual land consolidation project in Cyprus as a case study, the results demonstrate that the ES performs very well in relation to a solution generated manually by land consolidation experts while taking only a fraction of the time required. Yet while ES technology is becoming more widely used to solve geospatial problems as reported in the literature, there is still a long way to go before they can be used in more operational settings such as in local or regional planning offices. Two further requirements are the need for a user-friendly and efficient ES shell for integrating GIS for many spatial problem domain and further development of the ES technology itself in terms of knowledge acquisition, representation and self-learning
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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