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Search Results: 1 - 10 of 209674 matches for " Jonathan Galván-Colín "
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New Approaches to the Computer Simulation of Amorphous Alloys: A Review
Ariel A. Valladares,Juan A. Díaz-Celaya,Jonathan Galván-Colín,Luis M. Mejía-Mendoza,José A. Reyes-Retana,Renela M. Valladares,Alexander Valladares,Fernando Alvarez-Ramirez,Dongdong Qu,Jun Shen
Materials , 2011, DOI: 10.3390/ma4040716
Abstract: In this work we review our new methods to computer generate amorphous atomic topologies of several binary alloys: SiH, SiN, CN; binary systems based on group IV elements like SiC; the GeSe 2 chalcogenide; aluminum-based systems: AlN and AlSi, and the CuZr amorphous alloy. We use an ab initio approach based on density functionals and computationally thermally-randomized periodically-continued cells with at least 108 atoms. The computational thermal process to generate the amorphous alloys is the undermelt-quench approach, or one of its variants, that consists in linearly heating the samples to just below their melting (or liquidus) temperatures, and then linearly cooling them afterwards. These processes are carried out from initial crystalline conditions using short and long time steps. We find that a step four-times the default time step is adequate for most of the simulations. Radial distribution functions (partial and total) are calculated and compared whenever possible with experimental results, and the agreement is very good. For some materials we report studies of the effect of the topological disorder on their electronic and vibrational densities of states and on their optical properties.
Terahertz Modulation of Hexagonal-Shaped Metamaterials Employing ZnO Quantum Dots  [PDF]
Clarissa D. Vázquez-Colón, Alvaro Flores-Pacheco, Janeth Alexandra García-Monge, Juan Adrián Zepeda-Galvéz, Daniel Shreiber, Arturo Ayón
Open Journal of Inorganic Non-metallic Materials (OJINM) , 2019, DOI: 10.4236/ojinm.2019.91001
Abstract: The utilization of UV excitation to verify the terahertz (THz) wave modulation of hexagonal-shaped metamaterial (MM) arrays coated with synthesized photoluminescent, down-shifting ZnO quantum dots (QDs) of two different radius sizes, namely, 3.00 nm (pH 10) and 2.12 nm (pH 12), respectively is reported. In order to characterize the behavior of the MM before and after deployment of the ZnO QDs, THz time domain spectroscopy in transmission mode was employed. Upon exposure to UV excitation, the collected amplitude modulation values were 9.21% for the pH 12 and 4.55% for the pH 10 ZnO QDs, respectively. It is anticipated that the ability to actively tune the performance of otherwise passive structures will promote the proliferation of THz signal modulation devices in the near future.
Familia, desarrollo y cambio social. Claves para un estudio interdisciplinario
álvarez Colín, Luis;
En-claves del pensamiento , 2008,
Abstract: nowadays it seems urgent for family studies to go beyond fragmentation, the oblivion of history and poverty of sensitivity towards social change in order to meet under the aegis of solid developmental science, at the crossroads of interdisciplinary thought and the universality of hermeneutics -axes of the reconstruction, robust knowledge, growing rigor, and an orderly fertility. in the face of this complex scenario, this article develops only four quite modest objectives as an integrating proposal and programatic vision. firstly, it poses a theoretical-methodological-research model as a starting point for the study of the family in a more integrated manner. secondly, it analyzes how development takes place in the family and how social change happens. it presents economic adversity as a concrete example. thirdly, it clarifies, from a pedagogic stance, some substantial tasks of the family. lastly, it tries to rescue from the twilight the social, moral and educational importance of emotions in order to drink with them from the springs of a symbolic-analogic hermeneutics.
ORLANDO MASON Y LAS RAíCES DEL PENSAMIENTO SOCIAL DE PABLO NERUDA
Colón,Daniel E;
Revista chilena de literatura , 2011, DOI: 10.4067/S0718-22952011000200002
Abstract: the theory of pablo neruda's poetic and political conversion during the spanish civil war suggests that the poetry of the chilean nobel laureate prior to this event was devoid of any political significance, while his subsequent poetry was oriented by his marxist ideology. in this article i explore the development of neruda's early social consciousness in his poetry and prose written prior to the publication of crepusculario in 1923. the term i use to characterize his political beliefs is "social justice," and i pay special attention to the role of neruda's uncle orlando mason in his formation.
Rese a de "La vida auténtica" de Erich Fromm,
Georgina Colín Castro
Argumentos (México, D.F.) , 2009,
Abstract:
ORLANDO MASON Y LAS RAíCES DEL PENSAMIENTO SOCIAL DE PABLO NERUDA
Daniel E Colón
Revista Chilena de Literatura , 2011,
Abstract: La teoría de la conversión poética y política de Pablo Neruda durante la Guerra Civil espa ola sugiere que la poesía del Premio Nobel chileno antes de este evento carecía de significación política, mientras que su poesía posterior fue orientada por una ideología marxista. En este artículo exploro el desarrollo de la temprana consciencia social de Neruda en su poesía y prosa escritas antes de la publicación de Crepusculario en 1923. El término que empleo para caracterizar sus creencias políticas es "la justicia social," y le presto atención especial al papel del tío de Neruda, Orlando Mason, en su formación. The theory of Pablo Neruda's poetic and political conversion during the Spanish Civil War suggests that the poetry of the Chilean Nobel Laureate prior to this event was devoid of any political significance, while his subsequent poetry was oriented by his Marxist ideology. In this article I explore the development of Neruda's early social consciousness in his poetry and prose written prior to the publication of Crepusculario in 1923. The term I use to characterize his political beliefs is "social justice," and I pay special attention to the role of Neruda's uncle Orlando Mason in his formation.
Formació de formadors. Una aproximació a la situació actual: Presentació
Maria Teresa Colén
Temps d'Educació , 2006,
Abstract:
Interacción y TIC en la docencia universitaria
Ana Ortiz Colón
Pixel-Bit , 2005,
Abstract: Este artículo, además de tratar la necesidad del uso de las TICs tecnologías de la información y la comunicación en la docencia universitaria, relata la experiencia del uso de la plataforma Ilias en la Universidad de Jaén, la fundamentación del modelo didáctico que la sustenta, así como el análisis de la interacción educativa en situación de ense anza/aprendizaje a través de las nuevas herramientas. Por último se plantea el estado de la cuestión en el uso de las TIC, tanto como apoyo a la docencia presencial como semipresencial o a distancia.
...Arte ostentando los primores es cauteloso enga o del sentido...: representaciones identatarias de géneros y sexualidades
Eliseo R. Colón
Nómadas , 1997,
Abstract: Eliseo R. ColónHampton-Court, le 8 février 1772, Mon cher ami,Que diable est-ce que je entends dire! que vous êtes un femme, et que c’est vou qui le dit?...Je ne veux pas croire cela; il serait trop dr le.Racontez vite à moi la vérité, afin que je dérange pas la petite mystificatione que peut-êtrevous avez voulu faire. Vous êtes un femme! Oh! si je voulais raconter tout ce que je sais quenon!...mai je dirai pas, soyes tranquille, je dirai pas; pourvu que je re oive votre lette. S’il êtrevrai, oh! oh! que je allair rire!Votre ami de vous homme, CH. Henri de HorneckNous n’avons pas trouvé la réponse du Chevalier d’éon.(Memoires du Chevalier D’éon, París: Editions de Saint Clair, 1967)Este ensayo abunda sobre un conjunto de categorías culturales mediantelas cuales se forman las construcciones identatarias de géneros y sexualidades. Elensayo elabora a partir de la teatralización de estas categorías cómo se pone enriesgo y se desestabiliza el conjunto de categorías oficiales de género y sexualidad.
El vocabulari català-alemany de 1502: "Vocabolari molt profitos per apendre La Catalan Alamany y Lo Alamany Catalan" [The German-Catalan vocabulary of 1502]
Colón, Germà
Zeitschrift für Katalanistik , 2011,
Abstract: Johan Rosenbachs "Vocabulari" is the first lexical index of Catalan and German, but it is not a completely original work. The aim of this paper is to produce evidence that shows its reliance on the early Italian dictionaries of his time, and especially on "Introito e Porta" (1477) from which the printer from Heidelberg took full paragraphs.
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