Hispanic Doctoral Students Challenges: Qualitative Results

Fifty doctoral students and graduates of a doctoral program in education on the Mexico border responded to five open ended questions which are part of the Carnegie Initiative on the Doctorate (CID). According to the CID developers, Walker, Golde, Jones, Bueschel and Hutchings, ―the purpose… is to examine the relationship between student experiences in a doctoral program and the outcomes of doctoral education. The responses address the full range of responsibilities which may be expected of a holder of the doctorate, including research, teaching, and the application of knowledge and skills in the discipline to practical problems in the world outside the university.‖ Preliminary analysis of findings indicate that Hispanic doctoral students feel more supported with a structured format to assist them in the development of their proposals, social events to promote bonding of members, and structuring classes to keep cohorts moving forward together through core courses and specialization clusters

Descriptive Comparison of Hispanic Doctoral Students (2007-2014) with Carnegie Initiative of the Doctorate National Survey Results

One hundred doctoral students and graduates of a doctoral program in education on the Mexico border were asked to complete a survey developed by the Carnegie Initiative on the Doctorate (CID). According to the CID developers, Walker, Golde, Jones, Bueschel and Hutchings, “the purpose of the survey is to examine the relationship between student experiences in a doctoral program and the outcomes of doctoral education. The survey addresses the full range of responsibilities which may be expected of a holder of the doctorate including research, teaching, and the application of knowledge and skills in the discipline to practical problems in the world outside the university.” Fifty percent of those surveyed responded

Nazwy komitetów wyborczych – aspekty strukturalne i aksjologiczne

The subject of this paper will be a semantic and structural analysis of the names of electoral committees, and a reference to the axiological systems that are indirectly reflected by them. The names of electoral committees are obligatory elements of electoral activities, as well as being an interesting element of political marketing

Evaluación experimental del método de puntales y tensores aplicado a muros de concreto de baja altura

El método de puntales y tensores (P-T) es una herramienta práctica para el diseño sísmico de elementos de concreto reforzado. Con el propósito de evaluar el método de P-T propuesto en el reglamento vigente ACI-318 se llevó a cabo una investigación experimental y analítica con muros de concreto de baja altura. En el programa experimental se incluyeron cuatro especimenes diseñados para fallar por cortante, los cuales se ensayaron dinámicamente en mesa vibradora. Las variables estudiadas fueron el tipo de concreto (peso normal y celular), la cuantía de acero (0,125 y 0,25%) y el tipo de refuerzo a cortante en el alma de los muros (barras corrugadas y malla de alambre soldado). Las propiedades de los muros fueron típicas de viviendas mexicanas de baja altura. Cuando se comparó la resistencia calculada con la resistencia medida se encontró que el método de puntales y tensores del reglamento ACI-318 hace una estimación adecuada de la capacidad a cortante de los muros estudiados. Sin embargo, el modo de falla a cortante del muro, la velocidad de aplicación de carga, el número de ciclos y la energía disipada a- cumulada, pueden afectar significativamente la degradación de resistencia de muros de concreto reforzado de baja altura.The strut-and-tie method (S-T) is a practical tool for the seismic design of reinforced concrete elements. Experimental and analytical research with low-rise concrete walls was carried out for assessing the S-T method proposed by the current ACI-318 building code. Four specimens designed to fail during shear and shaking table tests were included in the experimental programme. The variables studied consisted of the type of concrete (normal and cellular weight), the amount of steel web (0.125% and 0.25%) and the type of web reinforcement against shear (corrugated bars and welded wire mesh). Wall properties were typical of low-rise housing in Mexico. When the calculated shear strength was compared with the measured one it was found that the S-T method proposed by the ACI-318 building code suitably estimated the shear capacity of the models being studied. However, the wall’s shear failure mode, loading rate, the number of cycles and the cumulative energy dissipated would noticeably affect the degradation in strength of low-rise, reinforced concrete walls

Deformation analysis of concrete walls under shaking table excitations

Deformation analysis of structural elements is a valuable tool to investigate the relationship of lateral force versus shear, sliding and flexural deformations, to assess the strength mechanism of failure mode, to assign suitable values of lateral stiffness, to estimate the contribution of steel reinforcement to strength and displacement capacities, to calibrate analytical models and, to propose appropriate parameters for performance-based seismic design. An experimental and analytical study was conducted to assess the components of deformation of low-rise reinforced concrete walls. The experimental program included shaking table tests of six low-rise concrete walls. The method and the instrumentation schemes to allow accurate assessment of the three components of deformations for squat walls and walls with openings are proposed. It was found that the proposed method produce consistent results for the tests evaluated