1,720,956 research outputs found
Beweis eines Theorems in der Graphentheorie: Eine Ungleichung für den maximal möglichen Grad der Unbalanciertheit eines vollständigen exklusiven Bigraphen
Full text linkzusammenfassung (gekuerzt): abelson und rosenberg geben eine ungleichung fuer den maximal moeglichen grad der unbalanciertheit eines vollstaendigen exklusiven bigraphen zu n punkten an. der beweis dieser ungleichung konnte seit der aeusserung dieservermutung 1958 nicht gefunden werden. hier soll dieser beweis gegeben werden, indem zunaechst das problem geloest wird, um wieviel der grad der unbalanciertheit eines vollstaendigen exklusiven bigraphen zu n punkten maximal anwachsen kann, wenn ein weiterer, n plus 1ter punkt hinzugefuegt wird. daraus ergibt sich im naechsten schritt eine formel zur direkten berechnung des maximal moeglichen unbalanciertheitsgrades eines vollstaendigen exklusiven bigraphen zu n punkten.
The simulation of individual prediction in an 'alone' - and 'group' - condition
Full text link30 subjects had to predict a stimulus persons reactions to the itmes of a value test. they were given 5 answers of the s-person among which each of the five assumed dimensions of the unnormed test was represented. then 10 additional answershad to be predicted. after each prediction the true answer of the s-person was announced (by the experimenter) or could be found in an envelope. the same 30 subjects were run with the same value test but 2 different s-persons (one constructed, the other a modified empirical person) first in an "alone condition" where the prediction was given without interaction and then in a "group condition" where the 5 members first fixed an individual prediction each and then discussed these and derived a group prediction item by item. in the group condition the amount of individual interaction seemed to have no influence on the immediate outcome of the group decision (almost without exception - 56 out of 60 cases - the median of the individual predictions was chosen). it therefore was supposed that the interaction might have some influence on the group members individual solution process for the subsequent trials. to prove this assumption some models to simulate the individual prediction process were constructed. in the alone condition a variety of programs which assumed that for the first trials "projection" will take place (i.e. predict one's private opinions for the s-persons) and that then a learning process, which leads to a preference for the most often heard category of the s-persons answers, will take over, were the models with the best fit (119 maximal correct predictions out of 300) . these models did very bad in the group condition. in this situation models which assumed the summation of reaction tendencies and the realization of the biggest one were much more appropriate. the most important summands of the reaction potential were the "content structure" of the test itself (the face validity of the items presumably) and some preferences for not too extreme but yet information-conveying response categories (maximal success achieved was 136 correct predictions out of 300). the prior answers of the s-person were important only for the first trials and then ones own and the partner's priors predictions became predominately important. also the projection mechanism or one's private opinion to the items was much less important in the group than in the alone condition. the dissimilarities between the solution process in the alone-condition and the group-condition are exhibited by the simulation models which best describe each of the two situations. to obtain more perfect fit in both situations the consideration of personality variables and information on the test items and of verbal content of interaction in the group situation seems quite inevitable. only the second of the three kinds of information necessary was used to a small extent in our models, the primary goal of the investigation being to exploit the redundancies in both situations considered.
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
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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