119 research outputs found
Modeling considerations about a microchannel heat sink
No full textMany computational studies on hotspot microfluidic cooling devices found in the literature rely on simplified assumptions and conventions that do not capture the full complexity of the conjugate thermal problem, such as constant thermophysical fluid properties, radiation, and free air convection on the external walls. These assumptions are generally applied to typical microfluidic devices with a large number of microchannels and operating at Reynolds numbers between 100 and 1000. A one microchannel chip is a suitable starting point to analyze more systematically the implications of these assumptions, in particular at lower Reynolds numbers. Although it is a simpler system, it has been studied experimentally and numerically as a basic block of a thermal microfluidic device. In this work, we analyze the modeling of the overall heat transfer from a hotspot to a microfluidic heat sink, focusing on the effect of the different thermal transfer mechanisms (conduction, convection, and radiation), and temperature-dependent thermophysical properties of the fluid and the chip material. The study is developed as a function of the pressure difference applied to the system based on simulations performed using a finite volume method. Analyzing and comparing the different contributions to the energy losses, this work provides a critical discussion of the usually considered approximations, to make a reliable modeling of the overall thermal performance of a single rectangular straight channel embedded in a polydimethylsiloxane microfluidic chip.Fil: Chej, Lucas Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias; ArgentinaFil: Monastra, Alejandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias; ArgentinaFil: Carusela, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentin
Thermal diode assisted by geometry under cycling temperature
No full textTechnological progress in electronics usually requires their use in increasingly aggressive environments, such as rapid thermal cycling and high power density. Thermal diodes appear as excellent candidates to thermally protect critical electronic components and ensure durability and reliability. We model the heat transport across a square plate with a hole subjected to an oscillating external temperature, such spatial and temporal symmetries are broken. We find rectification of the heat current that strongly depends on the frequency and the geometry of the hole. This system behaves as a thermal diode that could be used as part of a thermal architecture to dissipate heat under cycling temperature conditions.Fil: Zurdo, Luis Luciano. Universidad Nacional de General Sarmiento. Instituto de Ciencias; ArgentinaFil: Chej, Lucas Gabriel. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Monastra, Alejandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias; ArgentinaFil: Carusela, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentin
Commentary on the Models of Electronegativity
No full textThe concept of electronegativity is one of the most relevant concepts in the chemical sciences from the second half of the past century. It is used to understand the polarity of bonds, bond dipole moments, and bond energy differences, as well as to get a qualitative understanding of chemical processes. Electronegativity is not a physical observable, so it cannot be determined experimentally. This has led to the development of different formulations that are featured in both scientific papers and chemistry textbooks. On the basis of an article published in this Journal by Hurst, we analyze the recommendation made by the author concerning this topic from a scientific-philosophical viewpoint.Fil: Accorinti, Hernán Lucas. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Filosofía "Dr. Alejandro Korn"; ArgentinaFil: Labarca, Martín Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Filosofía "Dr. Alejandro Korn"; Argentin
O silenciamento indígena na narrativa nacional conservadora de Lucas Alamán, México 1844-1849
No full textO presente estudo tem por objetivo analisar a obra , Disertaciones sobre la historia de la república Mexicana desde la época de la conquista que los españoles hicieron a fines del siglo XV y principios del XVI de la islas y continente americano hasta la Independencia( 1844-1849).” TOMO 1. Do historiador e político conservador Lucas Alamán (1792- 1853), esta fonte problematizada como um documento de valor historiográfico, que compõe uma narrativa que privilegia a herança cultural trazida pelo colonialismo e a lenda dos conquistadores, em específico Hernán Cortés. Em detrimento do silenciamento e das trocas culturais existentes para com as sociedade indígenas e a consequentemente toda a sua complexidade como grandes clãs étnicos altamente organizadosThe present study aims to analyze the work, “Dissertations on the history of the Mexican Republic from the time of the conquest that the Spanish people put an end to the 15th century and the early 16th century of the Islands and the American continent until independence (1844 -1849) ". VOLUME 1. From the conservative historian and politician Lucas Alamán (1792-1853), this source is understood as a response to the crisis with the present experienced by the author and by Mexico in the first half of the 19th century, marked by independence and the war against the USA. To understand the work in this way, the analysis of this source consists of the construction of the idea of European superiority in the American indigenous societies. Having the character of Hernan Cortés as its protagonist representing this superiority and Montezuma representing the inferiorityCoordenação de Aperfeiçoamento de Pessoal de Nível Superior – CAPE
Not informed by the author
No full textNesta dissertação, investiga-se, sob uma perspectiva psicanalítica, em termos de fatores culturais e de manejo clínico, como podem ser lidas diferentes modalidades de expressões de sofrimento da atualidade, manifestadas comumente sob o diagnóstico psiquiátrico de transtorno de ansiedade. Defende-se que estes quadros de sofrimento emocional representam mudanças nas organizações subjetivas da cultura, e, portanto, refletem também numa presença maior de estruturas psíquicas divergentes do modelo neurótico tradicional à época de Freud na clínica contemporânea. Assim, concerne observar como se dariam essas mudanças, de certa forma alinhadas a um modo discursivo no qual predomina a diretriz psiquiátrica. Exposto o objeto central, a pesquisa inicia-se, sob o método de revisão bibliográfica, com participação de trechos de vinhetas clínicas, abordando a contextualização sobre o aumento contemporâneo de diagnósticos de transtornos de ansiedade, assim como o aumento da sua presença no discurso geral da cultura. Pretende-se alcançar o que, deste cenário, pode ser lido como modos de sofrimento contemporâneo, com tonalidades de uma presença constante de pressão por desempenho e pela carência de capacidade de simbolização; bem como compreender qual o lugar e a influência do discurso psiquiátrico e do discurso psicanalítico neste contexto. A visão sobre a influência do discurso psiquiátrico, nesta apresentação, intenciona sensibilizar o leitor psicanalista a se aproximar do problema proposto. Após, revisa-se, na obra de Freud e em Winnicott, as construções teórico-clínicas sobre a psicopatologia centrada nas expressões de angústia e de ansiedade, visando apontar para a importância em abrirse possibilidades de manejo clínico que acomodam estruturas psíquicas divergentes da estrutura neurótica tradicional, aprofundadas por autores do chamado Estilo Empático, conforme estas diferentes estruturas psíquicas têm se mostrado presentes, de modo relevante, na atualidadeThis work investigates different expressions of suffering in current cultural organizations, a great part of them disclaimed and classified as a mental disorder, specifically, for this work, the anxiety disorders ones, and what psychoanalytic perspective can read about this phenomena. We defend that in these expressions of emotional suffering, there are cultural changes reflected, which means a bigger presence of different psychic structures, other than the classical neurothic models, studied by Freud. Therefore, as a clinic practice, psychoanalysis shall observe how these changes affect emotional expressions. In addition, there is an investigation on how the opposition of two narrative groups, the psychoanalytic and the psychiatric, affects and interacts with these ways of suffering. The direction of this work begins, under a bibliographical revisions method, with the contextualization of what is around the rise of anxiety disorders rates in current culture, as much as the presence, in informative channels in general, of these labels, when talking about suffering. With this, we reached that much of this emotional suffering is related with a cultural pressure for performance and deliverance, aligned with a psychic lack of symbolic resources. That said, the next step is to review, in Freud and Winnicotts work, what is the contributions about anxiety psychopathologies of these two authors, referring to the importance of considering opening the clinical handling and set-up, from the tradicional interpretative way, more assertive on classical neurotic patients, to what is called the Empathic Style, which involves changes on the analysis conductio
Le triomphe de l’injustice. Richesse, évasion fiscale et démocratie: Emmanuel Saez y Gabriel Zucman, Le triomphe de l’injustice. Richesse, évasion fiscale et démocratie (2020), Editorial Seuil, Francia ISBN 978-2021412123
No full textEmmanuel Saez and Gabriel Zucman have just published their book Le triomphe de l’injustice. Richesse, évasion fiscale et démocratie at the Seuil publishing house, whose collection Les livres du nouveau monde is directed by Pierre Rosanvallon. It should be remembered that the former is a professor of economics at the University of California at Berkeley and director of the Center for Equitable Growth. Winner in 2009 of the John Bates Clark Medal - the highest American distinction in economics - he is the author of countless articles in internationally renowned magazines and works such as World Inequality Report 2018, written together with Facundo Alvaredo, Lucas Chancel, Thomas Piketty and Gabriel Zucaman (2018), and Pour une révolution fiscale: un impôt sur le revenu pour le XXIème siècle (2011), written with Camille Landais and Thomas Piketty. The second, for his part, is a professor of economics at the same university and the author of the work La richesse cachée des nations. Enquête sur les paradis fiscaux (2017) which has been translated into 17 languages.Emmanuel Saez y Gabriel Zucman acaban de publicar su libro titulado Le triomphe de l’injustice. Richesse, évasion fiscale et démocratie en la editorial Seuil, cuya colección Les livres du nouveau monde está dirigida por Pierre Rosanvallon. Conviene recordar que el primero es catedrático de economía en la Universidad de California en Berkeley y director del centro para el crecimiento equitativo —Center for Equitable Growth, en inglés—. Ganador en 2009 de la medalla John Bates Clark —la más alta distinción norteamericana en economía—, es autor de innumerables artículos en revistas de prestigio internacional y de obras tales como World Inequality Report 2018, escrito junto con Facundo Alvaredo, Lucas Chancel, Thomas Piketty y Gabriel Zucaman (2018), y Pour une révolution fiscale: un impôt sur le revenu pour le XXIème siècle (2011), redactado con Camille Landais y Thomas Piketty. El segundo, de su parte, es catedrático de economía en la misma universidad y autor de la obra La richesse cachée des nations. Enquête sur les paradis fiscaux (2017) que ha sido traducida en 17 lenguas
Polyphony and the anxiety of influence in the fiction of Henry James
No full textJames's fiction, especially in the Middle Phase, centres
on the figure of the artist and is characterized by, the two
interrelated aspects which previous criticism has largely
overlooked: the Bakhtinian 'polyphonic' -creation of
'author-thinkers'; and the conflict between ephebes and
precursors, for which Harold-Bloom's concept of 'the-anxiety of
influence' is the most illuminating model. Polyphony is the
narrative mode, and influence is the intra-artistic, theme.
These, as the Introduction to the thesis makes clear, are
rehearsed in James's inaugural novel, Roderick Hudson. Rowland
Mallet is an author-thinker, and his failure is caused by
authorial limitations. His monologism -is impaired by his
mistaking empathy for the authorial sympathy. Likewise,
Hudson's failure does not arise from a mercurial temperament,
but from a polyphonic shortcoming: not possessing the power of
fiction to contain the fiction of power in, his mentor. And the
relationships among the three artists - Gloriani, Hudson and
Singleton - perfectly exemplify the Bloomian-theme. It is these
two concepts, polyphony and influence, which are the major
preoccupation in the Middle Phase; as, the works chosen
demonstrate. These are a novella, a novel, and a number of
short stories all of which have been unjustifiably neglected.
Chapter One, on The Aspern Papers, argues that Tina Bordereau,
far from being, the artless victim seen by many critics,
actually challenges and defeats the narrator by the very form
of her narrative. Her 'realist' discourse undermines his
language of 'romance', and shows up its internal unstability.
Chapter Two is an extensive study of the critical reception of
The Tragic Muse. The most common areas of critical attention
have been its contemporary topicality, its relation to previous
novels on similar themes, and the possible genealogy of Gabriel
Nash. Those have all missed the core of the work. - Chapter Three
demonstrates how polyphony and the anxiety of influence make
the novel what it really is. Influence arises from the
juxtaposition of, and the wrestling between, artistic ephebes
and their precursors (Nick and Nash,, Miriam and Madame Carre).
The dialogic quality defined by Bakhtin is crucial to the
proper, and even-handed, characterization of all, the conflicts
in the novel. And since most of James's tales in the eighties
and nineties -are about 'masters - and acolytes, the anxiety of
influence remains central. Chapter Four is a study of 'The
Author of Beltraffiol' and 'The Lesson of the Master'. Again the
characters' manipulations are a crucial focus in a way that
G6rard Genette's terminology helps to illuminate. The fact that
the ephebe is the author-thinker emphasizes the inextricability
of the Bakhtinian and the Bloomian in James. Just as
polyphony offers a different focus for explicating the poetics
of James's fiction; so the ephebal conflict provides the basis
for a fresh perception of James's own artistic struggle
. 1034 Año 21 (2022) junio. El Tlacuache
No full textMe sorprendo al recordar tantos años (1986-2018) cuando tuve la posibilidad, en el INAH Morelos, de conservar, restaurar y preservar, algunos documentos que las comunidades morelenses consideraban valiosos. Así conocí parte de la riqueza cultural que sobrevive en varias de sus regiones. Hubiera sido imposible sin la complicidad del maestro Francisco Suástegui integrante de la Unidad de Culturas Populares quien me invitó a colaborar en el programa Memoria histórica y memoria cotidiana. Caminando y platicando con la gente, encontró que varias representaciones del llamado teatro campesino seguían vigentes. Con su bonhomía e interés detectó varias muestras, era vital ganar la confianza de los que poseían sus papeles, y comentarles la posibilidad de conservarlos asegurando que los regresaríamos en mejor estado.- De cuando andaba por Jantetelco por Elvira Pruneda Gallegos.Primera foja. Albúm de firmas.
Oswaldo López Domínguez, noviembre 2021. Foja 2. Libro de Firmas. Nestor Omar Torres Cuervo. Noviembre 2021.Alamán, Lucas. Historia de México, Tomo I, Obras de Lucas Alamán. Edit. Jus Tercera Edic. 1986, México. P. 250. Para una visión completa: Luis Villoro, La revolución de Independencia. En Historia General de México. Tomo 1. El Colegio de México. 3ª edic México, 1981. Pp. 593-644. Gabriel Agraz García de Alba, Mariano Matamoros Guridi, héroe nacional, México, edición del autor, 2002, 532 pp.
Silvia Molina. El resplandor de la Batalla. Edit. Grijalbo. México 2009 - http://www.bicentenariomichoacan.org/pag/pdfs/4.pdf.
Sugiero visitar el sitio https://www.youtube.com/watch?v=Oosb2iY9QC0. Silvia Molina habla de manera coloquial sobre su relación con Mariano Matamoros y su libro El Resplandor de la Batalla. Es una oportunidad de comprar la versión accesible de su libro editado en la colección popular del FCE.
Erick Tenorio y Claudia Isabel Macías Cedeño. 150 años del Museo de Mariano Matamoros en Jantetelco Morelos. Suplemento Cultural El Tlacuache. 14 de enero 2022 Elvira Pruneda. Diciembre en la vida de Matamoros. Tlacuache 449. Domingo 2 de enero 1911
Sueños interrumpidos: el american dream en Animales fantásticos y dónde encontrarlos
No full textEn Animales fantásticos y dónde encontrarlos, la escritora J. K. Rowling debuta como guionista: refunde un texto literario publicado en 2001 para crear una precuela de la serie de Harry Potter y traslada la acción a Nueva York de la década de 1920. En ese desplazamiento geográfico y temporal, la película desarrolla una trama que retoma y desarticula el mito del american dream en sus diferentes inflexiones. En este artículo analizamos cómo se lleva a cabo dicha descomposición teniendo en cuenta el largometraje y su guion, así como otros escritos de la autora que participan de esta expansión del mundo mágico que se inició en 1997 con la publicación de Harry Potter y la piedra filosofalIn the work Fantastic Beasts and Where to Find Them, writer J. K. Rowling debuts as a Scriptwriter: she recasts a literary text published in 2001 to create a Harry Potter series' prequel, transferring the action to New York in the 1920's decade. In that geographical and temporal displacement, the movie develops a plot that takes back and dismantles the myth of the American dream in its different inflections. In this paper we analyze how this decomposition is carried out, taking into consideration the movie itself and its screenplay, as well as other works from the author that participate in the expansion of this magical world that began in 1997 with Harry Potter and the Philosopher's StoneFil: Gagliardi, Lucas. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina
Uma escrita pela sarjeta: O lugar de autoria em uma tradução intersemiótica
No full textO objetivo deste artigo é discutir sobre a autoria na tradução intersemiótica em quadrinhos da obra O Alienista, de Machado de Assis, por Fábio Moon e Gabriel Bá. Publicado em 2007, O Alienista de Moon e Bá explora a linguagem das histórias em quadrinhos, rompendo os limites da linguagem verbal e criando uma obra outra. A natureza do sistema semiótico das histórias em quadrinhos possibilita inovar a narrativa machadiana. A impressão de unidade da obra é construída pela interseção de fatores que apontam para a sua materialidade, tais como: (a) um sistema semiótico, (b) um campo social no qual essa materialidade surge e da qual ela é parte constitutiva, (c) os posicionamentos de sujeitos instituídos por esse campo. No caso da tradução intersemiótica analisada, cada um desses fatores é representado de maneira própria, tornando visíveis as diferenças entre Literatura e Quadrinhos. A discussão aborda as noções de autor e autoria, de obra, de linguagem quadrinística, dentre outras.
The purpose of this article is to discuss authorship in the Comics intersemiotic translation of the O Alienista from Machado de Assis by Fábio Moon and Gabriel Bá. Published in 2007, O Alienista by Moon and Bá explores the language of Comics, breaking the boundaries of verbal language and creating another work. The nature of the Comics semiotic system makes it possible to innovate the Machadian narrative. The unit impression of this new work is constructed by the intersection of factors that point to its materiality, such as: (a) a semiotic system, (b) a social field in which this materiality emerges and of which it is a constitutive part, (c) the positions of subjects instituted by this field. In the case of the intersemiotic translation analyzed, each factor is represented in their own way, making the differences between Literature and Comics visible. The discussion approaches the notions of authorship and author, of authorial work, of comic’s language, among others
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