1,721,291 research outputs found
Cantor spectrum for the quasi-periodic Schrodinger equation
No full textJohnson, Russell A.. (1990). Cantor spectrum for the quasi-periodic Schrodinger equation. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/1321
Remarks on nonautonomous bifurcation theory
Full text linkWe study some elementary bifurcation patterns when the bifurcation parameter is subjected to fast oscillation
On periodic solutions of a damped wave equations in a thin domain using degree theoretic methods
No full textWe combine the methods of the topological degree with techniques developed by J. K. Hale and G. Raugel to study the periodic solutions of a damped nonlinear hyperbolic equation in a thin domain. (C) 1997 Academic Press
On the nonautonomous hopf bifurcation problem
No full textUnder well-known conditions, a one-parameter family of two-dimensional, autonomous ordinary differential equations admits a supercritical Andronov-Hopf bifurcation. Let such a family be perturbed by a non-autonomous term. We analyze the sense in which and some conditions under which the Andronov-Hopf pattern persists under such a perturbation
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
The self at work: an overview
No full textIssues pertaining to the self are ubiquitous at work. Consider the case of Maggie, a senior manager at a large accounting firm who is hoping to be promoted to partner. Although the promotion comes with a pay raise, Maggie especially desires the position because of the boost it would give her self-esteem and because of the greater power and autonomy that being partner affords. For these reasons, Maggie is motivated to present an overly favorable impression of herself to the partners by seeking positive feedback about her accomplishments and by displaying visible signs of being engaged at work (e.g., working late and coming in on weekends, holding meetings with clients at the office, etc.). Or consider the case of Erlich, who is a member of a close-knit team working in a software company. The culture and leadership in this company stresses benevolence and universalism, which causes employees to see themselves as interconnected with one another. Erlich’s work can sometimes be quite demanding, which leaves him feeling mentally depleted and prone to making mistakes. When mistakes occur, they hinder the performance of his team members, leaving Erlich feeling guilt and shame. To escape negative feelings about himself and his abilities, Erlich smokes marijuana in the evening. As these two examples illustrate, what people think and feel about themselves impact how they perform their jobs and interact with work colleagues. The thoughts and feelings that people have about themselves are also shaped by their jobs and interactions, and the broader work environment. The self and work are indeed intertwined, thus necessitating that industrial and organizational psychologists have an understanding of theory and research pertaining to the self
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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