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El propósito de esta monografía es analizar la transformación del discurso de la política pública de atención y reparación entre los gobiernos de Álvaro Uribe y Juan Manuel Santos. Se estudia cómo las diferentes narrativas o relatos de política pública utilizan estrategias para poder influir en la formulación de la política de atención y reparación. Con base en el análisis narrativo de políticas públicas de Emery Roe, se construye una metodología particular para abordar este fenómeno. De esta forma, se logran identificar estrategias contextuales y discursivas que los relatos dominantes utilizan para posicionarse en el proceso de formulación de la política.

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A laboratory study has been conducted with two aims in mind. The first goal was to develop a description of how a cutting edge scrapes ice from the road surface. The second goal was to investigate the extent, if any, to which serrated blades were better than un-serrated or "classical" blades at ice removal. The tests were conducted in the Ice Research Laboratory at the Iowa Institute of Hydraulic Research of the University of Iowa. A specialized testing machine, with a hydraulic ram capable of attaining scraping velocities of up to 30 m.p.h. was used in the testing. In order to determine the ice scraping process, the effects of scraping velocity, ice thickness, and blade geometry on the ice scraping forces were determined. Higher ice thickness lead to greater ice chipping (as opposed to pulverization at lower thicknesses) and thus lower loads. S~milabr ehavior was observed at higher velocities. The study of blade geometry included the effect of rake angle, clearance angle, and flat width. The latter were found to be particularly important in developing a clear picture of the scraping process. As clearance angle decreases and flat width increases, the scraping loads show a marked increase, due to the need to re-compress pulverized ice fragments. The effect of serrations was to decrease the scraping forces. However, for the coarsest serrated blades (with the widest teeth and gaps) the quantity of ice removed was significantly less than for a classical blade. Finer serrations appear to be able to match the ice removal of classical blades at lower scraping loads. Thus, one of the recommendations of this study is to examine the use of serrated blades in the field. Preliminary work (by Nixon and Potter, 1996) suggests such work will be fruitful. A second and perhaps more challenging result of the study is that chipping of ice is more preferable to pulverization of the ice. How such chipping can be forced to occur is at present an open question.

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A partir de Constantino I, cuando el cristianismo fue reconocido y apoyado por los emperadores romanos, se dotó a la Iglesia de terrenos destinados a su mantenimiento. En poco tiempo, este patrimonio fundiario se acrecentó notablemente gracias a las donaciones de privados y a que, en la medida en que la situación lo permitió, los obispos se apropiaron de las dotaciones de los templos paganos de sus comunidades. Por otro lado, este aumento patrimonial suscitó problemas legales relacionados con los impuestos que debían pagarse por estas tierras.

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The AASHTO strategic plan in 2005 for bridge engineering identified extending the service life of bridges and accelerating bridge construction as two of the grand challenges in bridge engineering. These challenges have the objective of producing safer and more economical bridges at a faster rate with a minimum service life of 75 years and reduced maintenance cost to serve the country’s infrastructure needs. Previous studies have shown that a prefabricated full-depth precast concrete deck system is an innovative technique that accelerates the rehabilitation process of a bridge deck, extending its service life with reduced user delays and community disruptions and lowering its life-cycle costs. Previous use of ultra-high performance concrete (UHPC) for bridge applications in the United States has been considered to be efficient and economical because of its superior structural characteristics and durability properties. Full-depth UHPC waffle deck panel systems have been developed over the past three years in Europe and the United States. Subsequently, a single span, 60-ft long and 33-ft wide prototype bridge with full-depth prefabricated UHPC waffle deck panels has been designed and built for a replacement bridge in Wapello County, Iowa. The structural performance characteristics and the constructability of the UHPC waffle deck system and its critical connections were studied through an experimental program at the structural laboratory of Iowa State University (ISU). Two prefabricated full-depth UHPC waffle deck (8 feet by 9 feet 9 inches by 8 inches) panels were connected to 24-ft long precast girders, and the system was tested under service, fatigue, overload, and ultimate loads. Three months after the completion of the bridge with waffle deck system, it was load tested under live loads in February 2012. The measured strain and deflection values were within the acceptable limits, validating the structural performance of the bridge deck. Based on the laboratory test results, observations, field testing of the prototype bridge, and experience gained from the sequence of construction events such as panel fabrication and casting of transverse and longitudinal joints, a prefabricated UHPC waffle deck system is found to be a viable option to achieve the goals of the AASHTO strategic plan.

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The proposed action consists of upgrading Mississippi Drive (Iowa Highway 92) through downtown Muscatine, Iowa. The Mississippi Drive Corridor Project begins south of the Main Street/Grandview Avenue intersection, continuing to the East 2nd Street/Norbert F. Beckey Bridge intersection, which marks the end of the project. It passes through a mix of commercial, residential, Central Business District and industrial land uses. The total length of the project is approximately 1.6 miles, including 19 intersections (6 with traffic signals). Refer to the vicinity map on Figure 1. The current roadway is a 3- to 4-lane, urban facility with both divided and undivided medians. The roadway, ranging from 40 to 64 feet wide, is considered difficult to cross for pedestrians, especially for small children or elderly. The width of this roadway is being considered to be narrowed to improve the accessibility to the downtown from the Mississippi River riverfront area by pedestrians. This project also includes accommodations for bicycles and pedestrians and measures to reduce flooding on the roadway.

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Foram pesquisados os arquivos do Laboratório de Patologia Veterinária (LPV) da Universidade Federal de Santa Maria (UFSM) e revisados os diagnósticos de doenças de ovinos realizados entre 1990 e 2007. No período estudado foram realizados 19.476 exames de animais domésticos. Desses, 6.816 (34,9%) correspondiam a necropsias e 12.660 (65,1%) a exames histopatológicos realizados em materiais enviados por veterinários de campo. Materiais provenientes de experimentos em ovinos foram excluídos deste estudo, sendo obtidas 354 (5,1%) necropsias e 163 (1,2%) exames histopatológicos de ovinos. O diagnóstico foi conclusivo em 265 (74,8%) casos de necropsias e em 96 (59%) casos dos exames histopatológicos, somando 361 casos conclusivos. Esses casos foram divididos em grupos conforme a etiologia: 150 casos (41,6%) de intoxicações e toxiinfecções; 142 casos (39,3%) de doenças infecciosas e parasitárias; 31 casos (8,6%) de doenças metabólicas e nutricionais; 13 casos (3,6%) de neoplasmas e lesões tumoriformes; sete casos (1,9%) de distúrbios causados por agentes físicos; seis casos (1,7%) de distúrbios iatrogênicos; e quatro casos (1,1%) de distúrbios do desenvolvimento. Oito casos (2,2%) foram classificados em outros distúrbios por não se enquadrarem em nenhum dos outros grupos. Hemoncose e intoxicação por Nierembergia veitchii foram as doenças mais importantes para ovinos nesses 18 anos.

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Luettelo Kansalliskirjastossa olevan Victor Taipaleen arkiston sisällöstä