941 resultados para Jiménez de Asúa, Luis, 1889-1970


Relevância:

100.00% 100.00%

Publicador:

Resumo:

Título tomado de la cub. En la cub. Mucha gente con Joselo colectivo del Martes (EVA)

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Fecha de edición aproximada

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Se presenta un modelo de evaluación elaborado por el Seminario de Matemáticas del Instituto de Bachillerato Antonio Domínguez Ortíz, con el fin de difundirlo a otros centros. Es consecuencia del proyecto 'Modelo de Evaluación para Matemáticas dede BUP', que se ha ido experimentando a lo largo de tres cursos en el citado Instituto. El Modelo es ante todo diversificador del proceso, en el sentido de que trata de multiplicar los instrumentos de evaluación, de convertir en continuo el tiempo de la evaluación y de insertar la recuperación en el propio desarrollo curricular. En estos materiales se presentan ejemplos de 'hojas de grupo' y ejemplos de trabajos optativos. Las hojas de grupo elegidas presentan situaciones matemáticas desde diferentes perspectivas de trabajo y se acompañan de una ficha para el profesorado en la que se sistematizan objetivos, orientaciones para su utilización, referencias sobre el material complementario y comentarios generales sobre su aplicación. Los trabajos optativos tratan la adquisición de rutinas de cálculo o refuerzan el lenguaje algebraico o geométrico o permiten la realización de pequeñas investigaciones o la resolución de problemas.

Relevância:

100.00% 100.00%

Publicador:

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Programa de doctorado: Praxiología motriz, entrenamiento deportivo y didáctica de las actividades físicas

Relevância:

100.00% 100.00%

Publicador:

Resumo:

[ES] La importancia de la gasolina y el diesel resulta incuestionable para la economía de cualquier país. En las dos últimas décadas se ha producido en España un proceso de liberalización en el sector de venta minorista de hidrocarburos que, aunque en el caso de Canarias contaba con una mayor experiencia, los resultados no parecen ser los socialmente deseados. La presentación resume la experiencia investigadora en este sector, utilizando para ello diversas metodologías, pero alcanzando todas el mismo resultado: la ausencia de competencia en dicho mercado minorista.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

BACKGROUND Kidney recipients maintaining a prolonged allograft survival in the absence of immunosuppressive drugs and without evidence of rejection are supposed to be exceptional. The ERA-EDTA-DESCARTES working group together with Nantes University launched a European-wide survey to identify new patients, describe them and estimate their frequency for the first time. METHODS Seventeen coordinators distributed a questionnaire in 256 transplant centres and 28 countries in order to report as many 'operationally tolerant' patients (TOL; defined as having a serum creatinine <1.7 mg/dL and proteinuria <1 g/day or g/g creatinine despite at least 1 year without any immunosuppressive drug) and 'almost tolerant' patients (minimally immunosuppressed patients (MIS) receiving low-dose steroids) as possible. We reported their number and the total number of kidney transplants performed at each centre to calculate their frequency. RESULTS One hundred and forty-seven questionnaires were returned and we identified 66 TOL (61 with complete data) and 34 MIS patients. Of the 61 TOL patients, 26 were previously described by the Nantes group and 35 new patients are presented here. Most of them were noncompliant patients. At data collection, 31/35 patients were alive and 22/31 still TOL. For the remaining 9/31, 2 were restarted on immunosuppressive drugs and 7 had rising creatinine of whom 3 resumed dialysis. Considering all patients, 10-year death-censored graft survival post-immunosuppression weaning reached 85% in TOL patients and 100% in MIS patients. With 218 913 kidney recipients surveyed, cumulative incidences of operational tolerance and almost tolerance were estimated at 3 and 1.5 per 10 000 kidney recipients, respectively. CONCLUSIONS In kidney transplantation, operational tolerance and almost tolerance are infrequent findings associated with excellent long-term death-censored graft survival.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

A set of measurements of electromagnetic properties of building materials is presented in this work. The method is based on the measurement of the polarization state of the reflected signal from the material under study at a fixed angle of incidence. From the measured data, by using the Fresnel equations, it has been obtained the dielectric constant. Measurements were done by using two horn antennas at the frequency of 9 GHz. The obtained results are compared with the free space reflexion and transmission Fresnel method and other reflection methods based on a conductor waveguide. The method explained in this work can be used for other type of materials and its main advantage is the non-destructive character and the ease implementation.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

In this paper, the classic oscillator design methods are reviewed, and their strengths and weaknesses are shown. Provisos for avoiding the misuse of classic methods are also proposed. If the required provisos are satisfied, the solutions provided by the classic methods (oscillator start-up linear approximation) will be correct. The provisos verification needs to use the NDF (Network Determinant Function). The use of the NDF or the most suitable RRT (Return Relation Transponse), which is directly related to the NDF, as a tool to analyze oscillators leads to a new oscillator design method. The RRT is the "true" loop-gain of oscillators. The use of the new method is demonstrated with examples. Finally, a comparison of NDF/RRT results with the HB (Harmonic Balance) simulation and practical implementation measurements prove the universal use of the new methods.