La Literatura Argentina : orígenes, evolución, períodos, influencia, caracteres

Fil: Rojas, Ricardo

Influencia de la información geotécnica en los movimientos de tierra; Caso de análisis: embalse de un proyecto hidroeléctrico.

Proyecto de Graduación (Licenciatura en Ingeniería en Construcción) Instituto Tecnológico de Costa Rica, Escuela de Ingeniería en Construcción, 2004En este informe se analiza el efecto que tienen las características geotécnicas de los materiales en la construcción de proyectos que involucren movimientos de tierra. También se describen los principales criterios de diseño que deben considerarse en la construcción de presas de tierra. Como un caso particular, se estudia la influencia que tiene la presencia de arcillas haloisíticas en el sitio donde se va a ubicar el Embalse de Regulación del Proyecto Hidroeléctrico General, ya que las propiedades de éstas se ven afectadas por el alto contenido de humedad en el campo, lo cual implica que las especificaciones vigentes (iniciales) no puedan cumplirse. Con la ayuda del programa PCSTABLE6, de los estudios de suelos realizados en el sitio y partiendo del diseño original, se hizo un estudio en el que se analiza la estabilidad en los taludes de corte y la posibilidad de utilizar este suelo como material de relleno en los diques de cierre. Además de proponer soluciones satisfactorias, se describe la manera en que deben ser construidas las estructuras y se recomienda el tipo de maquinaria que se debe emplear. Finalmente, se hace mención en cuanto a la seguridad en el embalse y su impacto en el ambiente

Aquatic Stage Mosquito Biocontrol: Effects of Entomopathogenic Fungi Blastospores and Conidia on \u3ci\u3eAedes aegypti\u3c/i\u3e Pupae

Fungal entomopathogens present an opportunity to produce mosquito controls on-site, from remote locations to developing communities. Locally produced biopesticides have the potential to empower communities to develop internal disease vector control initiatives to protect local public health. We tested the effectiveness of the conidia solution and blastospore solution of Metarhizium anisopliae E9, Metarhizium anisopliae E1037, Isaria fumosorosea A97, and Isaria fumosorosea 9901 in controlling Aedes aegypti pupae. We observed that entomopathogenic fungi liquid blastospore solution induce mortality in Aedes aegypti pupae at a significantly greater rate than conidia solution and control treatment. However, further analysis of testing methods used in this study reveal that results may be an inaccurate representation of the fungi’s effect on mosquito pupae

Evidence of active management of private voluntary pension funds in Colombia: a perfomance analysis using proxy ETFS

The purpose of this study is to find evidence that shows that either activemanagement of private pension funds in Colombia actually adds value tothe investors or, on the contrary, investors would achieve better results ifthey invested in passively managed products such as, for example, an ETF(Exchange Trade Fund). After conducting a review of data available from 30different private pension funds in Colombia and 30 ETFs that had similarinvestment goals to these portfolios, our findings reveal that, using commonperformance indicators, a Colombian investor would have a better ROI byinvesting in passively managed products (ETFs) than in portfolios currentlyoffered by voluntary pension funds in Colombia.Portfolio performance, active management, voluntary pension market inColombia

La Guerra del Pacífico en la Hístoriografía Peruana: Notas para su Estudio

Indexación: Revista UNABLa Guerra del Pacífico es, hasta hoy, fuente de controversias para la historiografía del vecino país. Condicionada inicialmente por factores nacionalistas, la profesionalización del oficio del historiador, y la necesidad de entender el conflicto desligados de ideales patrióticos, han generado un debate que enfrenta las nuevas visiones con aquellos que, siguiendo modelos pasados, continúan percibiendo la historia como un instrumento ideológico

A indexação do conhecimento científico: a necessidade do conhecimento a serviço do desenvolvimento comunitário e da proteção da natureza

The pandemic, the economic crisis, and climate change impose new development models of scientific production, as we suggest in this perspective study. The authors propose “new ways of evaluating academic performance,” which means stopping exclusively rewarding researchers who publish in indexed journals and valuing work with communities and applied interdisciplinary research, aimed at understanding socioenvironmental problems and proposing possible solutions that improve academic performance, improve quality of life of the population, and protect nature.A pandemia, a crise econômica e as mudanças climáticas impõem novos modelos de desenvolvimento da produção científica. Propomos “novas formas de avaliar o desempenho acadêmico”, o que significa deixar de premiar exclusivamente pesquisadores que publicam em periódicos indexados, mas valorizar o trabalho com comunidades e a pesquisa interdisciplinar aplicada, visando compreender problemas socioambientais e sugerir possíveis soluções que melhorem o desempenho acadêmico, a qualidade de vida da população e a proteção da natureza

Experimental Characterization of straight compound-channel turbulent field

Straight compound-channel flows have been studied by many authors, mainly concerned with mean flow variables. Detailed information on the complex turbulent field of these flows is still scarce. In the present paper, high data rate measurements were obtained for the streamwise and vertical velocity components, using a 2D Laser Doppler Velocimeter in a experimental compound flume. The filtered velocities time series allowed the computation of relevant turbulence statistics: autocorrelation functions, dissipation spectra, turbulence scales and dissipation rate. The results are analyzed by comparison with universal laws drawn for isotropic turbulent 2D fully developed open-channel flow. The presence of strong secondary currents does not affect the universal law in the floodplain, as long as the constants are changed. In the main channel the 3D behavior of the flow is more pronounced and the universal laws fail to reproduce accurately the experimental result