52 research outputs found
Extrapolation-based approach to optimization with constraints determined by the Robin boundary problem for the Laplace equation
No full textThis paper considers the application of extrapolation techniques in finding approximate solutions of some optimization problems with constraints defined by the Robin boundary problem for the Laplace equation. When applied extrapolation techniques produce very accurate solutions of the boundary problems on relatively coarse meshes, but this paper demonstrates that this is not a real restriction when dealing with optimization problems. Producing a solution of continuous problem by polynomial extrapolation based on the low-order discrete problem solutions significantly reduces both computational time and memory. The present paper illustrates this approach using finite-difference and finite-element methods, and finally makes a brief remark about some tacit engineering assumptions regarding numerical solutions of conductive media problems by construction of equivalent resistor networks.</p
Extrapolation-based approach to optimization with constraints determined by the Robin boundary problem for the Laplace equation
No full textThis paper considers the application of extrapolation techniques in finding approximate solutions of some optimization problems with constraints defined by the Robin boundary problem for the Laplace equation. When applied extrapolation techniques produce very accurate solutions of the boundary problems on relatively coarse meshes, but this paper demonstrates that this is not a real restriction when dealing with optimization problems. Producing a solution of continuous problem by polynomial extrapolation based on the low-order discrete problem solutions significantly reduces both computational time and memory. The present paper illustrates this approach using finite-difference and finite-element methods, and finally makes a brief remark about some tacit engineering assumptions regarding numerical solutions of conductive media problems by construction of equivalent resistor networks.</p
Extrapolation-based approach to optimization with constraints determined by the Robin boundary problem for the Laplace equation
No full textThis paper considers the application of extrapolation techniques in finding approximate solutions of some optimization problems with constraints defined by the Robin boundary problem for the Laplace equation. When applied extrapolation techniques produce very accurate solutions of the boundary problems on relatively coarse meshes, but this paper demonstrates that this is not a real restriction when dealing with optimization problems. Producing a solution of continuous problem by polynomial extrapolation based on the low-order discrete problem solutions significantly reduces both computational time and memory. The present paper illustrates this approach using finite-difference and finite-element methods, and finally makes a brief remark about some tacit engineering assumptions regarding numerical solutions of conductive media problems by construction of equivalent resistor networks.</p
Branislava Susnik, Slovenian and Paraguayan: A humanist at the crossroads of worlds, the 20th century
No full textSe presenta una semblanza de la antropóloga Branislava Susnik (1920- 1996) en la que se intenta mostrar aspectos de su personalidad, su trabajo cotidiano, sus rasgos humanos manifiestos y su labor como responsable y conductora del Museo Etnográfico “Andrés Barbero” de Asunción (Paraguay). El aporte tiene el formato de un ensayo evocativo en el que se toman en cuenta los métodos habituales aplicados en la concepción de una historia de vida y la autobiografía. El texto recuerda y repasa su labor y cualidades como docente, los trabajos de campo y académico realizados, sus principales líneas de investigación, los avatares de su vida, así como datos diversos vertidos en el transcurso de encuentros mantenidos durante más de una veintena de años. Se agregan relatos y escenas personalísimas en las que el autor fue testigo presencial.A semblance of the anthropologist Branislava Susnik (1920-1996), with an attempt to show certain aspects of her personality, her daily job, her evident human features and her work as responsible and leader of the Ethnographic Museum “Andrés Barbero” of Asunción (Paraguay), is presented. This contribution is in the form of an evocative essay, in which usual methods for conceiving a life history and an autobiography are taken into account. The text is a reminder and a compilation of her work and qualities as a teacher, her fieldwork and academic production, her main lines of research, the vicissitudes of her life and diverse data that come from meetings which took place for more than twenty years. Stories and very personal scenes of which the author was an eyewitness are added.Fil: Arenas Rodriguez, Pastor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; Argentin
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