Thesis (Ph.D.)--University Of Illinois at Urbana-Champaign, 1976. / Includes bibliographical references.

La presente tesis se realizó durante el periodo Noviembre- Diciembre 2012, tiene por finalidad determinar qué factores sociodemográficos se relacionan al nivel de conocimientos y actitudes hacia la sexualidad en adolescentes del nivel secundario de la Institución Educativa Don José de San Martin. Los adolescentes internalizan normas, costumbres y usos en la interrelación humana a través de la socialización en los ámbitos familiar, escolar y comunitario; de manera que la sexualidad adolescente y las relaciones que se sostienen con respecto a ella, está profundamente vinculada a la construcción social que el adolescente logra a través de la capacidad de interacción y autonomía que haya interiorizado de su entorno. Se trató de un estudio prospectivo, transversal, analítico, no experimental; la muestra estuvo compuesta por 188 estudiantes. En la investigación la información fue registrada mediante la aplicación de 5 instrumentos, que contienen preguntas sobre elementos que constituyen los factores demográficos, apgar familiar, nivel socioeconómico, el nivel de conocimiento y la actitud hacia la sexualidad.

In the course of studying on secondary metabolites from marine organisms, we have investigated the chemical constituents of the soft coral Sarcophyton ehrenbergi collected at San-Hsien-Tai, Taitong County, Taiwan. Chromatographic separation of the organic extracts has led to the isolation of nine new cembrane diterpenes 1¡V9, and a initial natural separation of known cembrane diterpene 10. The chemical structures of pure compounds were determined by spectral (NMR, MS, UV and IR) and physical data, as well as comparison with the spectroscopic data of related chemicals in literature. Moreover, the metabolites 1¡V10 were evaluated in vitro for their cytotoxicity against of A-549 (human lung epithelial carcinoma), HT-29 (human colon adenocarcinoma), and P-388 (mouse lymphocytic leukemia) cells, as well as anti-HCMV activity. Compounds 3, 6, 9, and 10 were shown to exhibit significant cytotoxicity activities against P-388 with ED50 values of 2.7, 3.6, 2.0, and 3.0 £gg/mL, respectively. Compound 1, 2, 3, and 7 exhibited inhibitory activity against anti-HCMV, with EC50 values of 60.0, 46.0, 5.0, and 45.0 £gg/mL.

Education is touted as one of the most effective and inexpensive measures for reducing water consumption for major cities. Coupled with additional water reducing strategies this education can have a significant impact. While, this is a generally accepted principle in the water resources community it has been difficult to accurately quantify the savings. Studies attempting to quantify reductions from these programs have been limited to small samples of neighborhoods. San Antonio is recognized as one of the leading conservation programs in the country at reducing the consumption of its customers. This study focused on over 3,000 customers in San Antonio who were classified as high-end users. The average monthly consumption for this group in June of 2006 exceeded 60,000 gallons per month. Each customer was sent an educational packet by mail with information to conduct an audit of the water use indoors and outdoors. Many of the customers used a free service allowing a trained professional of the San Antonio Water System to conduct their audit at no charge. Three groups were identified (1) those who received a educational packet, (2) those who conducted a home audit and reported they had conducted an audit, (3) those who had a free audit conducted by a trained technician. The water consumption for six months was tracked and compared to the previous year's consumption. Each of the three groups showed savings with those in the third group showing the greatest savings. Lastly, a cost analysis was conducted showing the effectiveness of the program in reducing consumption by cost.

Recovered core samples from the San Andreas Fault Observatory at Depth (SAFOD), located near Parkfield, CA, offer a unique opportunity to study the products of faulting and to learn about the mechanisms of slip at 3 km depth. Casing deformation reflects active creep along two strands of the San Andreas Fault (SAF) at SAFOD. The two fault strands are referred to as the Southwest Deforming Zone (SDZ) at 3194 m measured depth (MD) and the Central Deforming Zone (CDZ) at 3301 m MD. The SDZ and CDZ contain remarkably similar gouge layers, both of which consist of a clay-bearing, ultrafine grain matrix containing survivor clasts of sandstone and serpentinite. The two gouges have sharp boundary contacts with the adjacent rocks. We have used X-ray Computed Tomography (XCT) imaging, at two different sampling resolutions, to investigate the mesoscale and microscale structure of the fault zone, specifically to characterize the shape, preferred orientation, and size distribution of the survivor clasts. Using various image processing techniques, survivor clast shape and size are characterized in 3D by best-fit ellipsoids. Renderings of survivor clasts illustrate that survivor clasts have fine tips reminiscent of sigma type tails of porphyroclasts observed in myolonites. The resolution of the XCT imaging permits characterization of survivor clasts with equivalent spherical diameters greater than 0.63 mm. The survivor clast population in both the SDZ and CDZ gouge layers have similar particle size distributions (PSD) which fit a power law with a slope of approximately -3; aspect ratio (major to minor axis ratios) distributions also are similar throughout ranging between 1.5 and 4, with the majority occurring between 2-2.5. The volume- and shape- distributions vary little with position across the gouge zones. A strong shape preferred orientation (SPO) exists in both creeping zones. In both the SDZ and CDZ the minor axes form a SPO approximately normal to the plane of the San Andreas Fault (SAF), and the major axes define a lineation in the plane of the SAF. The observation that the size-, shape- and orientation-distributions of mesoscale, matrix-supported clasts are similar in the SDZ and CDZ gouge layers, and vary little with position in each gouge layer, is consistent with the hypothesis that aseismic creep in the SDZ and CDZ is achieved by distributed, shearing. The consistency between the SPO and simple-shear, strike-slip kinematics, and the marked difference of PSD, fabric, cohesion and clast lithology of the gouge with that of the adjacent rock, is consistent with the hypothesis that the vast majority of the shear displacement on the SAF at SAFOD is accommodated within the gouge layers and the gouge displays a mature, nearly steady-state structure.

El objeto fundamental del presente trabajo es determinar si existe una presencia agraviada de maltrato por negligencia hacia la población infantil de las comunidades de Kawache, Villa Unión y Las Américas ubicadas en el distrito de San Juan de Miraflores en la ciudad de Lima durante el período 2006-2007, entendida ésta como negligencia en la satisfacción de un conjunto de necesidades que son cruciales para el desarrollo personal de los mismos. La hipótesis principal de esta investigación es la siguiente: “El maltrato por negligencia atenta en contra de la satisfacción de un conjunto de necesidades de importancia vital para la formación del desarrollo personal del niño o niña. Dicha forma de maltrato no actúa aislada sino que es parte de un sistema que, además de tolerar e incluso fomentar la negligencia, legitima las relaciones autoritarias y violentas entre los individuos que la conforman, a la par que las reproduce de generación en generación, violando normas legales y derechos reconocidos de alcance nacional e internacional.” A fin de comprobar las hipótesis planteadas para esta investigación se ha procedido a aplicar dos encuestas, una de ellas dirigida a la población infantil y la otra a los padres de la comunidad. Al revisar los resultados de la misma queda comprobada la presencia de maltrato por negligencia en las referidas comunidades. Asimismo, se ha procedido a comprobar un conjunto de indicadores utilizando las técnicas estadísticas inferenciales de prueba de hipótesis y estimación de intervalos de confianza.

No description available.

TUCSAN ist das Speichernetzwerk (Storage Area Network) der TU Chemnitz. Es realisiert auf einem Midrange-Speichersystem und elf Raid-Systemen eine direkt nutzbare Gesamtspeicherkapazität von 83 TB. Für automatisierte Datensicherungen und Redundanz stehen weitere 104 TB zur Verfügung. Der Vortrag stellt die eingesetzte Technik und die Sturktur von TUCSAN vor. Weiterhin werden die damit realisierten Dienste präsentiert und es wird ein Ausblick auf künftige Vorhaben gegeben. Der Vortrag wurde am 10. Mai 2007 im Rahmen eines Kolloquiums zur Inbetriebnahme des TUCSAN gehalten.

Extr. de: Tesis doct.--Historia de arte--Madrid--Universidad nacional de educación a distancia, 1999. / Extrait de la thèse doctorale de l'auteur, "La enseñanza de la pintura y los pintores en la Real academia de bellas artes de San Fernando de Madrid durante la primera mitad del siglo XIX" Bibliogr. p. [495]-554.

Thesis (Ph. D.)--University of Arizona, 2000. / Includes bibliographical references. Also available online.