763 resultados para Diego Díaz del Valle


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419 p.

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[es] El presente trabajo se ha realizado con el propósito de conocer mejor una de las realidades del ámbito educativo: la participación de las familias en los centros escolares. Para ello, nos hemos centrado en las relaciones de comunicación entre la familia y la escuela, teniendo en cuenta a ambos colectivos como contextos de socialización fundamentales en el desarrollo del niño. Así, partiendo de un marco teórico basado en la conceptualización de la participación a partir de diferentes aproximaciones teóricas y del marco jurídico que regula este ámbito a nivel estatal, hemos realizado un trabajo de campo en un centro concertado de clase media que busca sondear las formas y la práctica de participación de las familias a fin de obtener un diagnóstico sobre los niveles de participación existentes hoy en día en este tipo de centros.

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The aim of this study was to evaluate the normalized response speed (Vrn) of the knee musculature (flexor and extensor) in high competitive level volleyball players using tensiomyography (TMG) and to analyze the muscular response of the vastus medialis (VM), rectus femoris (RF), vastus lateralis (VL), and biceps femoris (BF) in accordance with the specific position they play in their teams. One hundred and sixty-six players (83 women and 83 men) were evaluated. They belonged to eight teams in the Spanish women's superleague and eight in the Spanish men's superleague. The use of Vrn allows avoiding possible sample imbalances due to anatomical and functional differences and demands. We found differences between Vrn in each of the muscles responsible for extension (VM, RF, and VL) and flexion (BF) regardless of the sex. Normalized response speed differences seem to be larger in setters, liberos and outside players compared to middle blockers and larger in males when compared to females. These results of Vrn might respond to the differences in the physical and technical demands of each specific position, showing an improved balance response of the knee extensor and flexor musculature in male professional volleyball players.

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EXTRACT (SEE PDF FOR FULL ABSTRACT): Torrey pine (Pinus torreyana Parry ex Carr.) has one of the most limited geographical ranges and population size in the Pinus genus; it is present only on Santa Rosa Island and on the coast between San Diego and Del Mar, where our research was conducted. A 168-year chronology (1827-1994) was developed using 28 increment cores extracted from 15 living and 2 dead stranding trees at Torrey Pines State Reserve, San Diego, California. ... The spatial correlation with western North America winter and spring precipitation, as well as with published tree-ring chronologies, indicates a connection with the American Southwest. Global correlation maps with winter sea level pressure and sea surface temperature are consistent with the hypothesis that San Diego precipitation is affected by a southerly displaced North Pacific storm track and by warmer water farther south, both leading to higher transport of lower latitude moisture.

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The temperature dependence of the stress-induced martensite (SIM) formation in a Ti-10V-2Fe-3Al (Ti-1023) alloy under compressive loading has been studied. At low temperatures, the stress level at which martensite starts to form increases linearly with the deformation temperature, while the stress at which the deformation switches to regular plastic deformation is roughly temperature independent. A thermostatistical model for dislocation evolution is employed to describe deformation twinning in martensite. Combined effects of twinning induced plasticity and solid solution strengthening are considered in terms of temperature variations. The SIM effect disappears on deformation at temperatures beyond ~ 233 ° C, which is close to the predicted Ms temperature of 240°C. The thermostatistical model predicts a transition from twinned martensite to pure slip at 250°C. By providing a model to predict the martensite formation, and by describing deformation twinning, the present work provides a number of tools that may be employed to conceive new titanium alloys combining improved strength and ductility. © 2013 Elsevier B.V.

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Características dos solos agrícolas da região semi-árida do Vale do São Francisco. Bases de dados georreferenciadas para a seleção de áreas vitícolas do Vale do Submédio São Francisco . O clima vitícola do Submédio São Francisco e o zoneamento dos períodos de produção de uvas para elaboração de vinhos. Variabilidade espacial do clima no Vale do Submédio São Francisco com vistas ao zoneamento mesoclimático . Zonificación de terroir aplicado a zonas sin tradición vitícola: el caso del Valle Submedio del Río San Francisco (Pernambuco, Brasil). Comportamiento fisiológico de la vid en climas cálidos y en particular durante el período de maduración de la uva. Técnicas de produção vitícola com ciclos sucessivos em condições tropicais. Análise dos atuais sistemas de produção de uvas para vinho no Vale do São Francisco. Introdução e avaliação de novas cultivares para vinho no Vale do São Francisco. Manejo de água na cultura da videira. Problemas fitossanitários na viticultura do Vale do São Francisco . Problemas entomológicos na viticultura do Vale do São Francisco. Selección de cultivares y desarrollo de nuevos viños de calidad en climas cálidos: comportamiento agronómico y enológico en la región de jerez, España. Estabilidade da matéria corante dos vinhos de regiões de clima quente. Peculiaridades de la vinificación de uvas producidas en climas cálidos. Diferenciação da composição fenólica de vinhos portugueses induzida por colagens protéicas. Características das uvas do Vale do São Francisco sob o ponto de vista enológico. Características analíticas e sensoriais de vinhos produzidos no Vale do Submédio São Francisco, Brasil. Desafios e prioridades para o desenvolvimento científico e tecnológico da produção de vinhos de qualidade em zonas tropicais.

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The technical efficiency in volleyball is closely related to the ability to perform displacements or jump (1). Therefore, it is necessary that precise, individualized, and localized evaluation of the muscles frequently involved in volleyball practice be studied (2,3). The aim of this study was to analyze the neuromuscular changes of the knee musculature in professional volleyball players using Tensiomyography (TMG) and jump tests.

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The aim of this study was to analyze the effects of short-term resistance training on the body composition profile and muscle function in a group of Anorexia Nervosa restricting type (AN-R) patients. The sample consisted of AN-R female adolescents (12.8 ± 0.6 years) allocated into the control and intervention groups (n¼18 each). Body composition and relative strength were assessed at baseline, after 8 weeks and 4 weeks following the intervention. Body mass index (BMI) increased throughout the study (p = 0.011). Significant skeletal muscle mass (SMM) gains were found in the intervention group (p = 0.045, d = 0.6) that correlated to the change in BMI (r = 0.51, p < 0.031). Meanwhile, fat mass (FM) gains were significant in the control group (p = 0.047, d = 0.6) and correlated (r > 0.60) with change in BMI in both the groups. Significant relative strength increases (p < 0.001) were found in the intervention group and were sustained over time.

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27 hojas : ilustraciones.

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4 hojas : ilustraciones.

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70 hojas : ilustraciones, fotografías a color.

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La presente propuesta es una aproximación reflexiva y critica de las prácticas evaluativas que se vienen desarrollando en la enseñanza básica y media en las instituciones de carácter privado de la ciudad de Cali, sustentada desde nuestra propia experiencia como docentes en ejercicio y estudiantes de último semestre en Licenciatura de Matemáticas y Física de la Universidad del Valle, y apoyada en el análisis de unas actividades piloto de intervención y evaluación matemática, en torno a diferentes nociones y conceptos relacionados con la estructura conceptual del tópico de proporción y proporcionalidad en los grados de séptimo de educación básica y décimo de educación media que se realizaron a fin de plantear una serie de interrogantes cruciales en torno a la evaluación, dado su carácter organizador, dinamizador y potencializador del currículo. Esta propuesta se apoyará en el marco metodológico de los organizadores del currículo, donde la evaluación es un eje fundamental en el análisis didáctico que permite la articulación y organización de un currículo significativo para los intereses de los educandos.

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El discurso escolar del contenido de programación lineal, en los establecimientos educacionales chilenos, se ha convertido en un proceso mecánico y sin sentido para el estudiante. Para revertir esta mirada, se intenta dar respuesta a la siguiente interrogante ¿Cuáles son los significados reales que emergen y dan fuerza a la programación lineal? Se evidenciará el estudio del rol actual de la programación lineal y los procesos históricos de su surgimiento, con el fin de identificar aquellos factores que le dan fuerza a su desarrollo y construcción.