1,721,093 research outputs found
Some Results in Linear Theory of Thermomicrostretch Elastic Solids
No full textThe aim of this paper is to study the spatial and temporal behavior of thermoelastodynamic processes for microstretch continuum materials. The spatial behavior is described by establishing estimates of Saint–Venant type and Phragmén–Lindelöf type for bounded and unbounded bodies, respectively, with decay rate being dependent or independent of time, while the temporal behavior is studied by establishing the relations describing the asymptotic behavior of the Cesàro means of the different parts of the total energy
On the micromorphic thermoelasticity without energy dissipation
No full textThe linear dynamic theory of micromorphic thermoelasticity without energy dissipation is considered. First, we establish a reciprocity relation which involves thermoelastic processes at different instants. We show that this relation can be used to establish a uniqueness theorem and a reciprocal theorem. The uniqueness result is derived with no definiteness assumption on elastic constitutive coefficients. The reciprocal theorem avoids both the use of the Laplace transform and the incorporation of initial conditions into the equations of motion. Then, a variational theorem for the first boundary-initial value problem is established. The effect of a concentrated heat supply in an unbounded body is also investigated
February 14, 2016: Was Scalia a Great Justice?
Full text linkBlog post, “Was Scalia a Great Justice?“ discusses politics, theology and the law in relation to religion and public life in the democratic United States of America
Fundamental Solution in the Theory of Micropolar Thermoelasticity for Materials with Voids
No full textThis paper concerns with the linear theory of micropolar thermoelasticity for materials with voids. We construct the fundamental solution of the system of differential
equations in the case of steady oscillations in terms of elementary functions. Some basic properties of this solution are established
Fast iteration algorithm for integral equations of the first kind arising in 2D diffraction by soft obstacles
No full textWe propose a new iteration numerical algorithm to solve boundary integral equations of the first kind arising in the 2D scattering by soft obstacles. The main idea is to operate on each iteration step with an integral equation, which has a convolution kernel, by changing the full kernel with a special averaging procedure. The practical convergence of the algorithm is demonstrated by some examples for three different geometries. If M is the number of iterations then the computational cost of the algorithm is MNlog(N)
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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