Reflexiones didácticas acerca del papel de las nuevas tecnologias en la enseñanza de las artes.

Sin resume

The art trades: meanind and perspective

Los Oficios de arte constituyen un género dentro del mundo del arte aun no muy bien defini¬do, ni tampoco muy bien valorado. En los últimos años, esta concreta parcela de la Cultura se presenta con una nueva perspectiva, significándose como un interesante y productivo ámbito de investigación de gran atractivo y consideración entre los estudiosos del Patrimonio. Los oficios de arte son un destacado y valioso referente cultural, por su condición de promo¬tores del “potencial endógeno”, factor de progreso local y fuente de creación de empleo, puesto que contribuyen de forma directa y sostenible al desarrollo económico de las regiones, así como al mante¬nimiento de las culturas territoriales. Bajo la categoría de “oficios de artes” se reúnen todas aquellas actividades y producciones artísticas de calidad, que por su condición no pueden ser enmarcadas ni como “Arte” ni como “arte¬sanía”. La desaparición de gran parte de los maestros y especialistas de muchos de los oficios, supone que la supervivencia de una parte destacada de nuestras tradiciones no se pueda ya garantizar por la sim¬ple transmisión de conocimientos, que antaño la práctica en los talleres aseguraba. Haciendo necesario el rescate y la adecuación de los oficios de arte, a través de un programa de estímulos empresariales, la incorporación de recursos innovadores y la continuidad y el relevo generacional desde una sustantiva y adecuada mejora de la formación.Art trades represent a part of the world of art neither clearly defined nor greatly appreciated. During last years, specifically this piece of Culture has adopted a new perspective, becoming an interesting and productive field of investigation and acquiring great value among those skilled in the Cultural Heritage. Art trades are an important and outstanding cultural reference, not only because they contribute to local improvement, creating new jobs and aiding to the economic development of regions, but also because Art trades help maintaining territorial culture alive, due to their role as promoters of the “endogenous potential”. The term Art Trades covers all those quality artistic activities and productions which cannot be regarded neither as “Art” nor as “Crafts”. The disappearance of most masters and specialists in many of these trades entails that survival of a large part of our traditions is no longer guaranteed, as in the old days, by the simple transmission of knowledge carried out in workshops. Art Trades must therefore be aided by means of a program for stimulating new investments, incorporating innovative resources and providing better training resources for the creation of a new generation of craftsmen

Dual-Band Tunable Recursive Active Filter

This letter presents a novel recursive active filter topology that provides dual-band performance, with independent tuning capability in both bands. The dual-band operation is achieved by using two independent feedback lines. Additionally, linear phase shifters based on left-handed cells are included in these two branches in order to tune the center frequency of both pass bands

Why do we preserve biodiversity? A brief sociological, psychological and moral review

En este trabajo se muestran, de manera muy sucinta, algunos conceptos fundamentales sobre los valores que subyacen en la toma de las decisiones sobre la conservación de la biodiversidad, así como las bases psicológicas de la deliberación en este contexto. Para ello, se describe, en primer lugar, un modelo sociológico clásico que ayuda a predecir la asignación de recursos para la conservación, basado en la construcción social y el poder “político” oculto de las diferentes especies. En segundo lugar, se vincula dicho modelo con la taxonomía de valores subyacentes (no necesariamente excluyentes). Finalmente, se discute la base psicológica de la deliberación valorativa a partir de la teoría de los Dos Sistemas de Kahneman, poniendo como ejemplo la teoría de las intuiciones morales de Haidt. En conjunto, se espera que este trabajo aporte un bosquejo útil sobre las bases sociológicas, psicológicas y morales de las políticas de conservación.This paper briefly shows some fundamental concepts about the values that underlie decision making on biodiversity conservation, as well as the psychological bases of the deliberation in this context. First, it is described a classical sociological model that helps to predict the allocation of resources for conservation, based on social construction and the hidden "political" power of different species. Secondly, this model is linked to the taxonomy of underlying values (not necessarily excluding). Finally, the psychological basis of value deliberation is discussed based on the theory of the Two Systems of Kahneman, taking as an example the Haidt's theory of moral intuitions. Overall, it is expected that this paper will be a useful summary of the sociological, psychological and moral basis of the conservation policies

Rainwater Harvesting for Agricultural Irrigation: An Analysis of Global Research

Within a context of scarce water resources for agriculture, rainwater harvesting constitutes a promising alternative that has been studied by different disciplines in recent years. This article analyses the dynamics of global research on rainwater harvesting for agricultural irrigation over the last two decades. To do this, qualitative systematic analysis and quantitative bibliometric analysis have been carried out. The results reveal that this line of research is becoming increasingly important within research on irrigation. Environmental sciences and agricultural and biological sciences are the most relevant subject areas. Agricultural Water Management, Physics and Chemistry of the Earth, and Irrigation and Drainage are the journals that have published the most articles on the subject. India, China, the United States (USA), South Africa, and the Netherlands are the countries that lead this line of research. Although significant progress has been made in this subject area, it is necessary to increase the number of studies on the capacity of rainwater harvesting systems to cover irrigation needs in different farming contexts, the factors that determine their adoption by farmers, the economic and financial feasibility of their implementation, and their contribution to mitigating global climate change

Evaluation of Enzyme Additives on the Nutritional Use of Feeds with a High Content of Plant Ingredients for Mugil cephalus

The Mugilidae are a group of fish with a great interest for aquaculture due to their omnivorous profile, rapid growth, and resistance to environmental variations. The selection of feed ingredients for these species is currently focused on an extensive use of plant by-products, with this being limited by their content in anti-nutritive factors (mainly phytate and non-starch polysaccharides; NSPs). Nevertheless, specific enzymes can be used to counteract some of those negative effects. In the present study, the effect of pretreating two high-plant feeds with a mixture of enzymes (glucanases + phytase) on the digestive use of protein and phosphorus by juvenile mullets (Mugil cephalus) was assessed using both in vitro and in vivo assays. The enzymatic treatment significantly modified the potential bioavailability of some nutrients, such as a reduction of sugars, pentoses, and phytic phosphorus. Also, it increased the digestibility of protein in one of the feeds but reduced that of phosphorus in both of them. The potential usefulness of enzyme treatment and the information provided by the two types of assays are discusse

Retos en el diseño de un generador caótico en tecnología CMOS submicrónica

En este artículo se exponen los retos para llevar a cabo el diseño de un generador caótico, basado en el circuito de Chua, en tecnología CMOS submicrónica. El diseño analógico del generador caótico se complementa con un control digital, que proporciona programabilidad para definir distintos estados (claves) que aumenten la seguridad del cifrado. Además, se analizan distintas variables (temperatura, mismatching...) que pueden afectar a la sincronización de dos sistemas idealmente idénticos, impidiendo el descifrado de la información transmitida.Los autores agradecen la ayuda concedida por el Centro Universitario de la Defensa (2013-12) para iniciar esta línea de investigación, así como la colaboración del Grupo de Diseño Electrónico mediante el proyecto del Plan Nacional de I+D+i TEC2011-23211

Forest Ecosystem Services: An Analysis of Worldwide Research

The relevance of forests to sustain human well-being and the serious threats they face have led to a notable increase of research works on forest ecosystem services during the last few years. This paper analyses the worldwide research dynamics on forest ecosystem services in the period from 1998 to 2017. A bibliometric analysis of 4284 articles was conducted. The results showed that the number of published research articles has especially increased during the last five years. In total, 68.63% of the articles were published in this period. This research line experiences a growing trend superior to the general publishing trend on forest research. In spite of this increase, its relative significance within the forest research is still limited. The most productive subject areas corresponded to Environmental Science, Agricultural and Biological Sciences and Social Sciences Economic topics are understudied. The scientific production is published in a wide range of journals. The three first publishing countries are United States, China and the United Kingdom. The most productive authors are attached to diverse research centres and their contributions are relatively recent. A high level of international cooperation has been observed between countries, institutions and authors. The findings of this study are useful for researchers since they give them an overview of the worldwide research trends on forest ecosystem services