Arquitectura y ciudad en la obra de Antonio Palacios

Arquitectura y ciudad en la obra de Antonio Palacios

Al norte del futuro

Al norte del futuro

Habitando las raíces bebedoras : la casa de la cascada

La casa de la cascada de Frank Lloyd Wright siempre ha sido sugerente de reflexiones en torno a la poética de habitar. Para el autor la naturaleza constituye una auténtica tautología con el conocimiento. La observación de la naturaleza es la apertura a todas las instancias del onocimiento; la experiencia directa y la búsqueda del origen de las cosas; «el quehacer arquitectónico para Wright ha de tener un sentido básico de equilibrio con las fuerzas de la naturaleza».

Los anales diáfanos del viento

Antonio Femández Alba recuerda al amigo arquitecto-humanista Juan Daniel Fullaondo

Reflexión sobre la iniciación al proyectar arquitectónico. Metodología para un encadenamiento docente entre el Área de Expresión Gráfica Arquitectónica y el Área de Proyectos Arquitectónicos

El objetivo principal del artículo es exponer y reflexionar sobre algunas de las experiencias docentes desarrolladas a lo largo de los años, con alumnos a los que se les ha impartido docencia en el Área de EGA y en el Área de Proyectos por los mismos profesores. La experiencia trata de expresar la ligazón existente entre una docencia del proyectar vinculada a la del dibujar, y su escalonamiento docente. Se hace necesaria una reflexión en la estructuración de la docencia en niveles de aproximación con atenciones concretas, para establecer un correcto escalonamiento docente, de manera que el aprendizaje sea procesual. Cada nivel, que se debe vincular con los anteriores y posteriores, debe cubrir unos determinados referentes de partida, objetivos, competencias, destrezas, y capacidades a superar por los alumnos.

Accurate integration of forced and damped oscillators

The new methods accurately integrate forced and damped oscillators. A family of analytical functions is introduced known as T-functions which are dependent on three parameters. The solution is expressed as a series of T-functions calculating their coefficients by means of recurrences which involve the perturbation function. In the T-functions series method the perturbation parameter is the factor in the local truncation error. Furthermore, this method is zero-stable and convergent. An application of this method is exposed to resolve a physic IVP, modeled by means of forced and damped oscillators. The good behavior and precision of the methods, is evidenced by contrasting the results with other-reputed algorithms implemented in MAPLE.

Ildephonsi Limon Montero ... Tractatus de vrinis in quatuor disputationes diuisus : cum duobus indicibus.

Mode of access: Internet.

Juicio de los sacerdotes : doctrina practica y anatomia de sus conciencias : dispuesta en seis platicas ... /

Mode of access: Internet.

Prácticas de visitar a los enfermos y ayudar á bien morir : contienen piadosos y saludables avisos y documentos contra las engañosas astucias del enemigo comun, y muchas santas oraciones ... para socorrer á los que en sus últimas agonías suelen carecer de todo consuelo : obra muy útil y necesaria para los párrocos y confesores, y para todo género de personas ... / por el M.R.P. Baltazar Bosch de Centellas y Cardona ...

Mode of access: Internet.

Beyond personal Leader Member Exchange (LMX) quality:the effects of perceived LMX variability on employee reactions

A fundamental tenet of Leader–Member Exchange (LMX) theory is that leaders develop different quality relationships with their employees; however, little research has investigated the impact of LMX differentiation on employee reactions. The current research investigates whether perceptions of LMX variability (the extent to which LMX relationships are perceived to vary within a team) affects employee job satisfaction and wellbeing beyond the effects of personal LMX quality. As LMX variability runs counter to principles of equality and consistency, which are important for maintaining social harmony in groups, it is hypothesized that perceptions of LMX variability will have a negative effect on employee reactions, via its negative impact on perceived team relations. Two samples of employed individuals were used to investigate the hypothesized relationships. In both samples, an individual's perception of LMX variability in their team was negatively related to employee job satisfaction and wellbeing (above the effects of LMX), and this relationship was mediated by reports of relational team conflict.

The effect of heat treatment on mechanical properties of pulsed Nd:YAG welded thin Ti6Al4V

Pulsed Nd:YAG has been adopted successfully in welding process of thin (0.7 mm) Ti6Al4V. Laser welding of such thin sheet requires a small focal spot, good laser beam quality and fast travel speed, since too much heat generation can cause distortion for thin sheet weld. The microstructures of Ti6Al4V were complex and strongly affected the mechanical properties. These structures include: a´ martensite, metastable ß, Widmanstätten, bimodal, lamellar and equiaxed microstructure. Bimodal and Widmanstätten structures exhibit a good-balance between strength and ductility. The microstructure of pulsed Nd:YAG welded Ti6Al4V was primarily a´ martensite, which showed the lowest ductility but not significantly high strength. A heat treatment at 950 followed by furnace cooling can transform the microstructure in the weld from a´ martensite structure into Widmanstätten structure.