1,721,065 research outputs found
Commencement, Colin Graham, Dr. Helen Nash, Sanford Mcdonnell and Cynthia Nash 5477
No full textCommencement, Honorary Degree Recipients Colin Graham and Dr. Helen Nash, Speakers Sanford Mcdonnell and Curator Cynthia Nash 5477https://irl.umsl.edu/photo/6479/thumbnail.jp
Botha (Colin Graham), (of the Cape Archives). The french Refugees at the Cape.
No full textDes Marez G. Botha (Colin Graham), (of the Cape Archives). The french Refugees at the Cape.. In: Revue belge de philologie et d'histoire, tome 9, fasc. 1, 1930. pp. 221-222
Deconvolution techniques for adaptive equalisation and image processing
No full textThis thesis examines the application of recent advances in estimation theory to the problems of adaptive equalisation and image processing. In particular the algorithms described herein are based on Kalman filtering and dynamic programming techniques.It is well known that the Kalman filter provides the minimum mean square error (MMSE) solution to a wide range of filtering problems in which the data can be modelled as the output of a linear filter excited by a gaussian input. In data transmission systems the signal is generally binary so that improved performance at the removal of intersymbol interference can be obtained from non-linear processors exploiting this property and such filters are derived from modified Kalman equalisers and from simplified implementations of the Viterbi algorithm.In two dimensions the MMSE criterion is used to derive recursive algorithms based on Kalman filtering for the deconvolution of images blurred by camera/image motion or defocussing effects, and for optimum filtering of images heavily corrupted by white gaussian noise. Since the filters are applied in the space rather than the frequency domain they can be used for the removal of both spatially variant and invariant blurs.As an extension of the one-dimensional case, non-linear filters are derived for the processing of noise corrupted binary fields. A comprehensive collection of simulation results is presented demonstrating the performance of the algorithms.</p
Place names in the Cape Province.
No full textIncludes foldout 'Map showing the migration of the stock farmers in the Cape Colony during the 18th century.' inserted facing the preface.; Map available online http://nla.gov.au/nla.map-vn1894264
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
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