1,721,494 research outputs found
sigpy
No full textThis python package was used for numerical examples as reported in the article "Newton Polytopes and Relative Entropy Optimization," by Riley Murray, Venkat Chandrasekaran, and Adam Wierman (arXiv 1810.01614).
Sigpy provides an interface to construct specialized optimization models using version 1.0 of the CVXPY python package. In order to solve the resulting optimization models, one must install appropriate third-party optimization engines such as ECOS or MOSEK.
The last change to sigpy source code occured on November 17, 2018; sigpy has been superseded by the "sageopt" python package, which remains under development through 2020.Related Publication:
Newton Polytopes and Relative Entropy Optimization
Riley Murray Caltech, Department of Computing and Mathematical Sciences
Venkat Chandrasekaran Caltech, Department of Electrical Engineering, Department of Computing and Mathematical Sciences
Adam Wierman Caltech, Department of Computing and Mathematical Sciences
arXiv preprint
2018-10-02
engContact person: Riley John Murray [email protected]
From Fear to Forgetting: Understanding the Effects of Anxiety on Motor Memory Consolidation
No full textThis study investigates the effects of anxiety on motor memory consolidation, focusing on whether anxiety induced during a short post-practice consolidation period impairs the retention of newly learned motor skills. Using a finger-tapping task, participants were exposed to either a high-anxiety (horror film) or low-anxiety (nature documentary) video during a three-minute consolidation period. State anxiety was measured using the State-Trait Anxiety Inventory (STAI-S) before and after the anxiety manipulation. Results showed that while anxiety was successfully manipulated, anxiety did not significantly affect motor memory consolidation, as measured by the number of correct sequences completed on the finger-tapping task. Further analysis indicated a possible inverted-U relationship between anxiety and memory consolidation, aligning with the Yerkes-Dodson law, where moderate anxiety may enhance consolidation. Despite these insights, the findings were inconclusive due to baseline anxiety differences between groups, highlighting the need for future studies with larger sample sizes and multiple anxiety conditions. This study contributes to understanding the complex relationship between emotional states and memory consolidation, suggesting that moderate anxiety may optimize motor memory processes, although further research is necessary to confirm these findings
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
Letter from John H. Riley to John Muir, 1867 Jan 15
Full text link644please to tell father that [illegible] are all well and that I is got home safe Mr Muir I look for and speady answer to friend Muirs from John H Riley John you please to see O S good or Smith and if they will give me as much a weak or more and send me 25 dollars so I can move I will come at once [illegible] you see them see the best they will do for me to work a year for the firm and if they will give me every other job beside the one I had that I can do y I would as leaf have it and if not I will take my old job talk to Mr Jones and see it may be at ther is some job that he can work me in if that man wants to keep the circle saw that I had let me no as soon as is have Knightstown Po Henery [illegible] 00389https://scholarlycommons.pacific.edu/jmcl/43219/thumbnail.jp
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