182,883 research outputs found
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
Sea-maiden : a musical recitation, op. 79 / by Ernest R. Kroeger.
No full textThe sea-maiden : musical recitation, op. 79 / by Ernest R. Kroeger.1678-2
Theme enrichment analysis: A statistical test for identifying significantly enriched themes in a list of stories with an application to the Star Trek television franchise
No full textIn this paper, we describe how the hypergeometric test can be used to determine whether a given theme of interest occurs in a storyset at a frequency more than would be expected by chance. By a storyset we mean simply a list of stories defined according to a common attribute (e.g., author, movement, period). The test works roughly as follows: Given a background storyset and a sub-storyset of interest, the test determines whether a given theme is over-represented in the sub-storyset, based on comparing the proportions of stories in the sub-storyset and background storyset featuring the theme. A storyset is said to be “enriched” for a theme with respect to a particular background storyset, when the theme is identified as being significantly over-represented by the test. Furthermore, we introduce here a toy dataset consisting of 280 manually themed Star Trek television franchise episodes. As a proof of concept, we use the hypergeometric test to analyze the Star Trek stories for enriched themes. The hypergeometric testing approach to theme enrichment analysis is implemented for the Star Trek thematic dataset in the R package stoRy. A related R Shiny web application can be found at https://github.com/theme-ontology/shiny-apps
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Romance of the Dawn : Recitation with Pianoforte Accompaniment. Poem by Elizabeth K. Reynolds, Music by Ernst R. Kroeger. Op. 61.
No full textThe Romance of the Dawn : a recitation of a poem by Elizabeth K. Reynolds and piano music by Ernest R. Kroeger (opus 61). Pubished by the Willis Music Company, Cincinnati, Ohio.490 31
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Les mouvements des yeux et les mesures de dépendance-indépendance du champ
No full textSummary
The author reviews the main methods for the measurement of field dependence-independence and analyzes the characteristics of eye movements during certain tests, namely Embedded Figures Test and Rod and Frame Test. The relationship between eye movements and field dependence-independence in schizophrenies is investigated as well as the relationship between uncontrolled lateral movements and cognitive style.Résumé
Après un rappel des principales épreuves permettant de mesurer la dimension dépendance-indépendance du champ, on examine des caractéristiques des mouvements oculaires lors de l'exécution des différentes tâches qui constituent ces épreuves, en particulier le EFT (Embedded Figures Test) et le RFT (Rod and Frame Test). Uauteur étudie ensuite la relation entre mouvements oculaires et dépendance-indépendance du champ chez les schizophrènes. Une dernière partie est consacrée aux mouvements latéraux involontaires dans leurs rapports avec le style cognitif.Rozestraten R. Les mouvements des yeux et les mesures de dépendance-indépendance du champ. In: L'année psychologique. 1981 vol. 81, n°2. pp. 511-533
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
A reference case for mean field games models.
No full textNous présentons un exemple archétypal de jeu à champ moyen. Cet exemple est important à deux égards. Tout d'abord, il est suffisamment simple pour permettre l'obtention de solutions explicites : les fonctions de Bellman sont quadratiques, les mesures stationnaires gaussiennes et l'étude de la stabilité peut se faire explicitement en utilisant les polynômes d'Hermite. Aussi, et malgré la simplicité du problème, l'exemple que nous présentons est suffisamment riche pour être transposé mutatis mutandis à d'autres domaines d'application plus complexes.In this article, we present a reference case of mean field games. This case can be seen as a reference for two main reasons. First, the case is simple enough to allow for explicit resolution: Bellman functions are quadratic, stationary measures are normal and stability can be dealt with explicitly using Hermite polynomials. Second, in spite of its simplicity, the case is rich enough in terms of mathematics to be generalized and to inspire the study of more complex models that may not be as tractable as this one.Partial differential equations; Mean field games; Control theory; Numerical methods;
Accounting for Respondent Uncertainty to Improve Willingness-to-Pay Estimates
No full textIn this paper we develop an econometric model of willingness to pay that integrates data on respondent uncertainty regarding their own willingness to pay. The integration is utility consistent and does not involve calibrating the contingent responses to actual payment data, and so the approach can "stand alone". In an application to a valuation study related to whooping crane restoration, we find that this model generates a statistically lower expected WTP than the standard CV model. Moreover, the WTP function estimated with this model is not statistically different from that estimated using actual payment data, suggesting that when properly analyzed using data on respondent uncertainty, contingent valuation decisions can simulate actual payment decisions. This method allows for more reliable estimates of WTP that incorporates respondent uncertainty without the need for collecting comparable actual payment data.
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