Archivos abiertos : Sonido, imagen y cosa en obras de Christian Boltanski, Oscar Muñoz y Grete Stern

El archivo tiene un estatus complejo y ambivalente. Puede ser un instrumento al servicio del poder y también ser albergue de conocimiento potencialmente emancipador capaz de desestabilizar verdades establecidas. Este trabajo propone recorrer e interrogar los usos que algunas intervenciones del arte moderno y contemporáneo realizaron con el soporte archivo, pensado antes que como repositorio inmóvil de saberes, discursos y conocimientos, como una norma que regula un tráfico de bienes simbólicos. Mi lectura intentará reconocer al archivo como un soporte contingente, mutante y dinámico, y recorrer algunos de los usos que el arte moderno y contemporáneo, en particular la fotografía y algunas zonas adyacentes han realizado con él

Archivos abiertos : Sonido, imagen y cosa en obras de Christian Boltanski, Oscar Muñoz y Grete Stern

El archivo tiene un estatus complejo y ambivalente. Puede ser un instrumento al servicio del poder y también ser albergue de conocimiento potencialmente emancipador capaz de desestabilizar verdades establecidas. Este trabajo propone recorrer e interrogar los usos que algunas intervenciones del arte moderno y contemporáneo realizaron con el soporte archivo, pensado antes que como repositorio inmóvil de saberes, discursos y conocimientos, como una norma que regula un tráfico de bienes simbólicos. Mi lectura intentará reconocer al archivo como un soporte contingente, mutante y dinámico, y recorrer algunos de los usos que el arte moderno y contemporáneo, en particular la fotografía y algunas zonas adyacentes han realizado con él

Archivos abiertos : Sonido, imagen y cosa en obras de Christian Boltanski, Oscar Muñoz y Grete Stern

El archivo tiene un estatus complejo y ambivalente. Puede ser un instrumento al servicio del poder y también ser albergue de conocimiento potencialmente emancipador capaz de desestabilizar verdades establecidas. Este trabajo propone recorrer e interrogar los usos que algunas intervenciones del arte moderno y contemporáneo realizaron con el soporte archivo, pensado antes que como repositorio inmóvil de saberes, discursos y conocimientos, como una norma que regula un tráfico de bienes simbólicos. Mi lectura intentará reconocer al archivo como un soporte contingente, mutante y dinámico, y recorrer algunos de los usos que el arte moderno y contemporáneo, en particular la fotografía y algunas zonas adyacentes han realizado con él

Experimental and numerical study of cw green laser crystallization of a-Si:H thin films

Crystallization and grain growth technique of thin film silicon are among the most promising methods for improving efficiency and lowering cost of solar cells. A major advantage of laser crystallization and annealing over conventional heating methods is its ability to limit rapid heating and cooling to thin surface layers. Laser energy is used to heat the amorphous silicon thin film, melting it and changing the microstructure to polycrystalline silicon (poly-Si) as it cools. Depending on the laser density, the vaporization temperature can be reached at the center of the irradiated area. In these cases ablation effects are expected and the annealing process becomes ineffective. The heating process in the a-Si thin film is governed by the general heat transfer equation. The two dimensional non-linear heat transfer equation with a moving heat source is solve numerically using the finite element method (FEM), particularly COMSOL Multiphysics. The numerical model help to establish the density and the process speed range needed to assure the melting and crystallization without damage or ablation of the silicon surface. The samples of a-Si obtained by physical vapour deposition were irradiated with a cw-green laser source (Millennia Prime from Newport-Spectra) that delivers up to 15 W of average power. The morphology of the irradiated area was characterized by confocal laser scanning microscopy (Leica DCM3D) and Scanning Electron Microscopy (SEM Hitachi 3000N). The structural properties were studied by micro-Raman spectroscopy (Renishaw, inVia Raman microscope).

Oscar Pistorius and the death of Reeva Steenkamp : mapping public opinions on Twitter using frame analysis and data mining

This paper uses innovative content analysis techniques to map how the death of Oscar Pistorius' girlfriend, Reeva Steenkamp, was framed on Twitter conversations. Around 1.5 million posts from a two-week timeframe are analyzed with a combination of syntactic and semantic methods. This analysis is grounded in the frame analysis perspective and is different than sentiment analysis. Instead of looking for explicit evaluations, such as “he is guilty” or “he is innocent”, we showcase through the results how opinions can be identified by complex articulations of more implicit symbolic devices such as examples and metaphors repeatedly mentioned. Different frames are adopted by users as more information about the case is revealed: from a more episodic one, highly used in the very beginning, to more systemic approaches, highlighting the association of the event with urban violence, gun control issues, and violence against women. A detailed timeline of the discussions is provided.

Shooting from the Wild Zone : A Study of the Chicana Art Photographers Laura Aguilar, Celia Álvarez Muñoz, Delilah Montoya, and Kathy Vargas

The dissertation analyzes and elaborates upon the changing map of U.S. ethno-racial formation from the vantage point of North American Studies, multi-disciplinary cultural studies, and the criticism of visual culture. The focus is on four contemporary Mexican American (Chicana) women photographers, whose art production is discussed, on the one hand, in the context of the Euro-American history of photographic genres and, on the other hand, in the context of so-called decolonizing cultural and academic discourses produced by Mexican Americans themselves. The manuscript consists of two parts. Part I outlines the theoretical and methodological domain of the study, positioning it in the interstices of American studies, European postmodern criticism, postcolonial feminist theory, and the theories of visual culture, particularly of art photography. In addition, the main issues and paradigms of Chicano Studies (Mexican American ethnic studies) are introduced. Part II consists of seven essays, each of which discusses rather independently a particular photographic work or a series of photographs, formulating and defending arguments about their meaning, position in the history of photographic genres, and their cultural and socio-political significance. The study closes with a discussion about ethno-racial identity formation and the role of Chicana photography therein - in embodying and reproducing new subjectivities, alternative categories of knowledge, and open ended historical narratives. It is argued that, symbolically, the "Wild Zone" of gendered and race-specific knowledge becomes associated with the body of the mother, a recurrent image in Chicana art works under discussion. Embedded in this image, the construction of an alternative notion of a family thus articulates the parameters of a matrifocal ethno-racial community unified by the proliferation of differences rather than by conformities typical of nationalistic ideologies. While focusing on art photography, the study as a whole simultaneously constructs, from a European vantage point, a "thick" description of Mexican American history, identities, communities, cultural practices, and self-representations about which very little is known in Finland.

Oscar Fischl (standing eighth from left)

Oscar Fischl (standing eighth from left) in group portrait of the Paybill Section of the Chief Accountant's Office of the Great Western Railway (GWR); Great Britain

The conservation status of the world’s reptiles

Effective and targeted conservation action requires detailed information about species, their distribution, systematics and ecology as well as the distribution of threat processes which affect them. Knowledge of reptilian diversity remains surprisingly disparate, and innovative means of gaining rapid insight into the status of reptiles are needed in order to highlight urgent conservation cases and inform environmental policy with appropriate biodiversity information in a timely manner. We present the first ever global analysis of extinction risk in reptiles, based on a random representative sample of 1500 species (16% of all currently known species). To our knowledge, our results provide the first analysis of the global conservation status and distribution patterns of reptiles and the threats affecting them, highlighting conservation priorities and knowledge gaps which need to be addressed urgently to ensure the continued survival of the world’s reptiles. Nearly one in five reptilian species are threatened with extinction, with another one in five species classed as Data Deficient. The proportion of threatened reptile species is highest in freshwater environments, tropical regions and on oceanic islands, while data deficiency was highest in tropical areas, such as Central Africa and Southeast Asia, and among fossorial reptiles. Our results emphasise the need for research attention to be focussed on tropical areas which are experiencing the most dramatic rates of habitat loss, on fossorial reptiles for which there is a chronic lack of data, and on certain taxa such as snakes for which extinction risk may currently be underestimated due to lack of population information. Conservation actions specifically need to mitigate the effects of human-induced habitat loss and harvesting, which are the predominant threats to reptiles.

Leo Baeck with New York Mayor William O'Dwyer and Union of American Hebrew Congregations President Maurice N. Eisendrath, Oscar M. Lazrus and Rabbi Daniel L. Davis Portraits; Groups; Men

Page 12 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Guia de obras de Oscar Niemeyer : Brasília 50 anos

Apresenta informações precisas e primorosamente ilustradas sobre as obras mais importantes de Niemeyer presentes na capital do país, Brasília.

Da matéria à invenção : as obras de Oscar Niemeyer em Minas Gerais - 1938-1955

Analisa o processo de criação das obras arquitetônicas de Oscar Oscar Niemeyer em Minas Gerais, do período de 1938 a 1955.

[Discurso do Deputado Oscar Corrêa : Sessão da Câmara dos Deputados de 08 de setembro de 1965]

Critica os serviços prestados pelas companhias aéreas, que agem como forças contrárias à consolidação de Brasília. Cita especialmente a deficiência do transporte aéreo entre a Capital Federal e Belo Horizonte.

[Discurso do Deputado Oscar Corrêa : Sessão da Câmara dos Deputados do dia 02 de maio de 1960]

Discurso proferido durante a 1ª Sessão da Câmara dos Deputados na nova capital do país. Descreve a falta de condições materiais e políticas para o pleno funcionamento do Congresso Nacional e do Poder Judiciário na nova capital.

Regulación alfa1-adrenérgica de la corriente IKr cardiaca

149 p. : il., graf.

Kv7 Channels Can Function without Constitutive Calmodulin Tethering

9 p.