1,720,954 research outputs found
Finite Displacement Analysis Of Plates Subjected To Flexure And Compression Using The Boundary Element Method
No full textThe generalized plane stress problem is coupled with the classic bending model using the effect of the finite displacements to analyze plates under combined loads. The direct boundary integral equations are derived from the equilibrium equations. Continuous or discontinuous linear boundary elements can be employed according to the boundary value problem and constant domain elements are introduced to consider the effect of the finite displacements. Compressed plates problems are studied with the shortening introduced by a uniform displacement applied on both edges to approach the numerical model to that used in the laboratorial experimentation. Obtained results are compared to those available from the literature.161168Gospodinov, G., Ljutskanov, D., The boundary element method applied to plates (1982) Appl. Math.Modelling, 6, p. 237Morjaria, M., Mukherjee, S., Inelastic analysis of transverse deflection of plates by the boundary element method (1980) J. Appl. Mech., 47, p. 291Palermo Jr., L., Plate bending analysis using the classical or the Reissner-Mindlin models (2003) Engineering Analysis with Boundary Elements, 27, pp. 603-609Tanaka, M., Integral Equation Approach to Small and Large Displacement of Thin Elastic Plates (1982) Boundary Element Methods in Engineering, pp. 526-539. , Brebbia, C.A. (ed.), Berlin: Springer-VerlagAtluri, S.N., Pipkins, D.S., Large Deformation Analysis of Plates and Shells (1991) Boundary Element Analysis of Plates and Shells, pp. 141-166. , Beskos D. E. (ed.), Springer-VerlagTimoshenko, S.P., Woinowsky-Krieger, S., (1959) Theory of Plates and Shells, , McGraw-Hill Book Company, New York, 2nd EdBui, H.D., Some Remarks about the Formulation of Three-Dimensional Thermoelastic Problems by Integral Equations (1978) Int. J. Solids and Structures, 14, pp. 935-939Ye, T.Q., Liu, Y.J., Finite deflection analysis of elastic plate by the boundary element method (1985) Appl. Math. Modelling, 9, pp. 183-188Salmon, C.G., Johnson, J.E., (1996) Steel Structures - Design and Behavior, , 4th Edition, New York, Harper Collins College PublishersSimões, R., Palermo Jr., L., O Cálculo das Menores Cargas Críticas em Placas Finas Usando o Método dos Elementos de Contorno XXIX Jornadas Sudamericanas de Ingenieria Estructural, Punta del Este, Uruguay, 2000. (Portuguese)Levy, S., Bending of Retangular Plates with Large Deflections (1942) NACA Technical Report 737, pp. 139-15
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
The Use Of The Tangential Differential Operator In The Dual Boundary Element Equation
No full textThe kernels of integrands are usually differentiated to obtain the general boundary integral equation (BIE) for stresses and its corresponding traction equation. An alternative BIE for stresses can be obtained when the tangential differential operator is introduced in problems using Kelvin type fundamental solutions. The order of the singularity is reduced with this strategy and the Cauchy principal value sense or the first order regularization can be used in the resultant BIE. The dual boundary element formulation with the BIE for tractions using the tangential differential operator is analyzed in the present study. Shape functions with same expressions for conformal or non-conformal interpolations are adopted and conformal interpolations were applied on the crack surface without losing the accuracy of the dual formulation. The results obtained are compared with solutions available from the literature to evaluate the formulation. Copyright © 2006 Tech Science Press.22123130Aliabadi, M.H., Boundary element formulations in fracture mechanics (1997) Appl. Mech. Rev., 50, pp. 83-96Almeida, L.P.C.P.F., Palermo Jr., L., On the implementation of the two dimensional dual boundary element method for crack problems (2004) 5th Int. Conference on Boundary Elements Techniques, , Lisboa, PortugalBlandford, G.E., Ingraffea, T.A., Liggett, J.A., Two-dimensional stress intensity factor computations using the boundary element method (1976) International Journal of Numerical Methods in Engineering, 17, pp. 387-404Bonnet, M., (1999) Boundary Integral Equation Methods for Solids and Fluids, , JohnWiley & Sons LtdChen, W.H., Chen, T.C., An efficient dual boundary element technique for a two-dimensional fracture problem with multiple cracks (1995) International Journal of Numerical Methods in Engineering, 38, pp. 1739-1756Civelek, M.B., Erdogan, F., CRACK PROBLEMS FOR A RECTANGULAR PLATE AND AN INFINITE STRIP. (1982) International Journal of Fracture, 19 (2), pp. 139-159Crouch, S.L., Solution of plane elasticity problems by the displacement discontinuity method (1976) International Journal of Numerical Methods in Engineering, 10, pp. 301-342. , 1976Guiggiani, M., Hypersingular formulation for boundary stresses evaluation (1994) Eng. Anal. Bound. Elem., 14, pp. 169-179Guimarães, S., Telles, J.C.F., General application of numerical Green's functions for SIF computations with boundary elements (2000) CMES - Computer Modeling in Engineering & Sciences, 1, pp. 131-139Kupradze, V.D., (1979) Three-dimensional problems of the mathematical theory of elasticity and thermoelasticity, , North HolandMi, Y., Aliabadi, M.H., Dual boundary element method for three-dimensional fracture mechanics analysis (1992) Engineering Analysis with Boundary Elements, 10 (2), pp. 161-171. , DOI 10.1016/0955-7997(92)90047-BMurakami, Y., (1987) Stress Intensity Factors Handbook, , Pergamon Press, OxfordPortela, A., Aliabadi, M.H., Rooke, D.P., The dual boundary element method: Effective implementation for crack problems (1992) International Journal of Numerical Methods in Engineering, 33, pp. 1269-1287. , 1992Sladek, V., Sladek, J., THREE-DIMENSIONAL CURVED CRACK IN AN ELASTIC BODY. (1983) International Journal of Solids and Structures, 19 (5), pp. 425-436Snyder, M.D., Cruse, T.A., Boundary integral equation analysis of cracked anisotropic plates (1975) International Journal of Fracture, 11, pp. 315-342Wen, P.H., (1996) Dynamic fracture mechanics: Displacement discontinuity method, , Computational Mechanics Publication
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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