6,375 research outputs found
Metodologías docentes en el EEES: de la clase magistral al portafolio
The inclusion of Spanish universities in the EHEA and its demand for high quality standards entails upgrading the ways of preparing teachers. The recommendations emphasize the focus on the student, which involves the implementation of teaching methods to increase his role. This paper sets out some considerations on the use of active methods to encourage the student�s involvement in the learning process - learning and the best implementation of other traditional methods which should not be abandoned just for being traditional.La incorporación de la universidad española al EEES y su exigencia de calidad lleva aparejada la renovación de las maneras de hacer de los docentes. Las recomendaciones hacen énfasis en los esfuerzos para centrar la atención sobre el alumno, lo que implica la puesta en práctica de metodologías docentes que aumenten su protagonismo. En este trabajo se hacen algunas consideraciones sobre la incorporación de métodos activos que fomenten la participación del alumno en el proceso de enseñanza � aprendizaje y la mejor aplicación de otras metodologías tradicionales que, por serlo, no habrán de ser abandonadas
Acorns for fattening free-range pigs (OK-Net Ecofeed Practice Abstract)
- The fattening performance is very much influenced by the age of pigs and their compensatory growth; hence, pigs should be as old as possible (≥1 year) and adapted to grazing.
- Grass is necessary as a source of protein to compensate for the low protein levels in acorns.
- The food conversion rate is 10.5 kg of whole acorns of Q. i. rotundifolia to gain 1 kg, besides the contribution of grass; to establish the stocking rate, consider that an adult evergreen oak produces ≈11 kg of acorns/year).
- Iberian pigs peel acorns to avoid the high content of tannins in the shell. However, during peeling, approxi-mately 20% of the kernel can be wasted
Short CFD simulation activities in the context of fluid-mechanical learning in a multidisciplinary student body
17 p.Simulation activities are a useful tool to improve competence in industrial engineering bachelors. Specifically, fluid simulation allows students to acquire important skills to strengthen their theoretical knowledge and improve their future professional career. However, these tools usually require long training times and they are usually not available in the subjects of B.Sc. degrees. In this article, a new methodology based on short lessons is raised and evaluated in the fluid-mechanical subject for students enrolled in three different bachelor degree groups: B.Sc. in Mechanical Engineering, B.Sc. in Electrical Engineering and B.Sc. in Electronic and Automatic Engineering. Statistical results show a good acceptance in terms of usability, learning, motivation, thinking over, satisfaction and scalability. Additionally, a machine-learning based approach was applied to find group peculiarities and differences among them in order to identify the need for further personalization of the learning activity.S
El fundamento lógico-metafísico de la identidad personal en la filosofía de Leibniz en torno a 1686. Análisis, influencia y revisiones
Combustion and flammability characteristics of solids at microgravity in very small velocity flows
Fires still remain as one of the most important safety risk in manned spacecraft. This problem will become even more important in long endurance non orbital flights in which maintenance will be non existing or very difficult. The basic process of a fire is the combustion of a solid at microgravity conditions in O2/N2 mixtures. Although a large number of research programs have been carried out on this problem, especially on flame spreading, several aspects of these processes are not yet well understood. It may be mentioned, for example, the temperature and characteristic of low emissivity flames in the visual range that take place in some conditions at microgravity; and there exists a lack of knowledge on the influence of key parameters, such as convective flow velocities of the order of magnitude of typical oxygen diffusion velocities
Analysis of the economic feasibility and reduction of a building’s energy consumption and emissions when integrating hybrid solar thermal/PV/micro-CHP systems
The aim of this paper is to assess the performance of several designs of hybrid systems composed of solar thermal collectors, photovoltaic panels and natural gas internal combustion engines. The software TRNSYS 17 has been used to perform all the calculations and data processing, as well as an optimisation of the tank volumes through an add-in coupled with the GENOPT® software. The study is carried out by analysing the behaviour of the designed systems and the conventional case in five different locations of Spain with diverse climatic characteristics, evaluating the same building in all cases. Regulators, manufacturers and energy service engineers are the most interested in these results.
Two major contributions in this paper are the calculations of primary energy consumption and emissions and the inclusion of a Life Cycle Cost analysis. A table which shows the order of preference regarding those criteria for each considered case study is also included. This was fulfilled in the interest of comparing between the different configurations and climatic zones so as to obtain conclusions on each of them. The study also illustrates a sensibility analysis regarding energy prices. Finally, the exhaustive literature review, the novel electricity consumption profile of the building and the illustration of the influence of the cogeneration engine working hours are also valuable outputs of this paper, developed in order to address the knowledge gap and the ongoing challenges in the field of distributed generation
- …