oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2018 ( 1 )

2015 ( 3 )

2014 ( 4 )

2013 ( 12 )

Custom range...

Search Results: 1 - 10 of 221 matches for " Isidoro Blikstein "
All listed articles are free for downloading (OA Articles)
Page 1 /221
Display every page Item
Hinduísmo, lingüística e semiologia
Isidoro Blikstein
Alfa : Revista de Linguística , 2001,
Abstract:
What Controls Recent Changes in the Circulation of the Southern Hemisphere: Polar Stratospheric or Equatorial Surface Temperatures?  [PDF]
Isidoro Orlanski
Atmospheric and Climate Sciences (ACS) , 2013, DOI: 10.4236/acs.2013.34052
Abstract:

Recent research suggests that both tropical ocean warming and stratospheric temperature anomalies due to ozone depletion have led to a poleward displacement of the midand high-latitude circulation of the Southern Hemisphere over the past century. In this study, we attempt to distinguish the influences of ocean warming and stratospheric cooling trends on seasonal changes of both the zonally symmetric and asymmetric components of the southern hemisphere circulation. Our analysis makes use of three data sets-the ERA40 reanalysis and results from two different runs of the GFDL global atmosphere and land model (AM2.1) for the period 1870 to 2004. A regression analysis was applied to two variables in each of the three data sets-the zonal component of the surface wind U(10 m) and the height at 300 hPato determine their correlation with zonally averaged polar stratospheric temperatures (T_polarat 150 hPa, averaged over a band from 70S - 80S) and low-level equatorial temperatures (T_equatorat 850 hPa averaged over a band at 5S - 5N). Our analysis shows that the zonally symmetric surface winds have a considerably enhanced intensity in high latitudes of the

Monte Carlo simulation of grain growth
Blikstein, Paulo;Tschiptschin, André Paulo;
Materials Research , 1999, DOI: 10.1590/S1516-14391999000300004
Abstract: understanding and predicting grain growth in metallurgy is meaningful. monte carlo methods have been used in computer simulations in many different fields of knowledge. grain growth simulation using this method is especially attractive as the statistical behavior of the atoms is properly reproduced; microstructural evolution depends only on the real topology of the grains and not on any kind of geometric simplification. computer simulation has the advantage of allowing the user to visualize graphically the procedures, even dynamically and in three dimensions. single-phase alloy grain growth simulation was carried out by calculating the free energy of each atom in the lattice (with its present crystallographic orientation) and comparing this value to another one calculated with a different random orientation. when the resulting free energy is lower or equal to the initial value, the new orientation replaces the former. the measure of time is the monte carlo step (mcs), which involves a series of trials throughout the lattice. a very close relationship between experimental and theoretical values for the grain growth exponent (n) was observed.
Monte Carlo simulation of grain growth
Blikstein Paulo,Tschiptschin André Paulo
Materials Research , 1999,
Abstract: Understanding and predicting grain growth in Metallurgy is meaningful. Monte Carlo methods have been used in computer simulations in many different fields of knowledge. Grain growth simulation using this method is especially attractive as the statistical behavior of the atoms is properly reproduced; microstructural evolution depends only on the real topology of the grains and not on any kind of geometric simplification. Computer simulation has the advantage of allowing the user to visualize graphically the procedures, even dynamically and in three dimensions. Single-phase alloy grain growth simulation was carried out by calculating the free energy of each atom in the lattice (with its present crystallographic orientation) and comparing this value to another one calculated with a different random orientation. When the resulting free energy is lower or equal to the initial value, the new orientation replaces the former. The measure of time is the Monte Carlo Step (MCS), which involves a series of trials throughout the lattice. A very close relationship between experimental and theoretical values for the grain growth exponent (n) was observed.
A festiva devo??o no Círio de Nossa Senhora de Nazaré
Alves, Isidoro;
Estudos Avan?ados , 2005, DOI: 10.1590/S0103-40142005000200017
Abstract: this article analyzes the círio [candle-lit procession] and the feast of our lady of nazaré as a great collective rite that combines formal and devotional aspects with the profane informality of a brazilian festival. as a grass roots manifestation of catholicism and a typical celebration of the state of pará, the círio of nazaré and attending festivities embrace native elements to express a regional identity, a particular temporality, and a perception of order and differing ways to contrast it.
Semiología broncoscópica: Descripción de dos nuevos signos
Isidoro,Ricardo;
Revista americana de medicina respiratoria , 2012,
Abstract: the paper describes two new endoscopic signs which can be useful in the use of diagnostic bronchoscopy. this is an essay on particular anatomic and functional circumstances suggesting the presence of a pathology which cannot be seen by the bronchoscopist. these two signs are the bubble sign and the black hole sign. the bubble sign is observed when the airflow is absent in a subsegmental bronchus leading to a peripheral pulmonary mass. this can be shown by the lack of mobile bubbles when a subsegmental bronchus is flooded with saline solution. the black hole sign consists in the circular penumbra observed at the end of a bronchus which communicates with a cavity. the paper describes the presentation and interpretation of these signs and offers an explanation about their physiopathology.
Problemas Familiares Contemporaneos o Situaciones Familiares Actuales: Invariancia y Novedad
Berenstein, Isidoro;
Psicologia USP , 2002, DOI: 10.1590/S0103-65642002000200003
Abstract: the author starts by asking himself whether the family is relevant nowadays. to answer this question he analyzes the couple's relationship with each other and with their children, placing these relationships historically. it is suggested that the "familial problems" come to being when a certain pattern of family becomes standard. those families which do not follow this pattern are then called "problematic". for that reason, the author prefers to make reference to different "familial situations". these are thought from a double perspective: the invariance which also refers to a sort of evolution, or the novelty which, as a contrast, relates to rupture and re-composition. three areas of familial situations are then distinguished: those which come from their familial relationships, from the social world and from each subject (as the variations from his/her internal world affect his/her familial bonds). at last, the author asks himself if the new familial forms really answer to the production of novelty and if this novelty relates to its shape or structure. he concludes that the family is not new nor old, but that it does something new or not. the analysis of the family should include an analysis of the making in its bounds and of the consequences of this making.
Problemas Familiares Contemporaneos o Situaciones Familiares Actuales: Invariancia y Novedad
Berenstein Isidoro
Psicologia USP , 2002,
Abstract: O autor inicia por perguntar-se sobre a relevancia da família na atualidade. Para responder esta quest o, examina os vínculos de casal e de rela o entre pais e filhos, situando-os historicamente. Sugere que os "problemas familiares" instauram-se a partir do momento em que se institui uma forma de família como oficial, sendo "problemas" as que n o seguem esse modelo. Por isto, prefere referir-se a diferentes "situa es familiares", que passam a ser pensadas a partir da crítica de dois critérios: o de invariancia, evolu o de formas anteriores, ou de novidade, ruptura e recomposi o. Distingue três áreas das situa es familiares que podem ser examinadas de acordo com estes critérios: aquelas provenientes das rela es familiares, do mundo social e de cada sujeito, das varia es de seu mundo interno que produzem efeitos nos vínculos familiares. Por fim, o autor pergunta-se se as novas formas familiares respondem realmente à produ o de uma novidade e se esta novidade é de forma ou de estrutura. Conclui que a família n o é nova ou velha, mas faz algo novo ou n o. A análise da família deve incluir uma análise do fazer em seus vínculos e das conseqüências desse fazer.
Lo humano y lo animal. Consideraciones sobre los escritos recientes de W. Welsch y los últimos de L. Wittgenstein
Isidoro Reguera
Nómadas , 2011,
Abstract: En la primera parte, este artículo analiza algunos escritos inéditos del Prof. Wolfgang Welsch (Jena), en los que éste intenta identificar el proprium humano (frente a lo animal) desde la teoría evolucionista. En la segunda parte, siguiendo en general las consideraciones de la primera, esboza una posible interpretación evolucionista de la filosofía de Wittgenstein, desde fuera de ella.
Ciencia y tecnología de materiales
Rasines, Isidoro
Arbor : Ciencia, Pensamiento y Cultura , 2000,
Abstract: Not available Se indica cuando nacen los institutos del área de Ciencia y Tecnología de Materiales y se expone cómo se evalúan los resultados de la labor que realizan. Se describe esta labor comenzando con la que llevan a cabo los cuatro institutos sectoriales en los ámbitos de las Ciencias de la Construcción, la Ciencia y la Tecnología de Polímeros, la Cerámica y el Vidrio, y la Metalurgia. A continuación se consigna la que realizan los cuatro institutos de Ciencias de Materiales en Aragón, Barcelona, Madrid y Sevilla; y la Unidad de Física de Materiales, en Bilbao. Al pasar revista a la situación actual estos centros se hace referencia a sus líneas de trabajo y proyectos en curso, y se mencionan en algún caso sus horizontes de futuro. También se indican en sendos anexos datos sobre recursos humanos y presupuestarios.
Page 1 /221
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.