El origami modular en el paso de lo tridimensional a lo bidimensional, como estrategia para la enseñanza de las propiedades fundamentales en figuras geométricas

El presente taller evidencia el uso de material didáctico (origami modular) para la enseñanza de la geometría centrándonos principalmente en la construcción de los sólidos platónicos, los cuales permitirán al estudiante trabajar implícitamente con las propiedades de los mismos a medida que los construyen, para posteriormente pasar a un reconocimiento explícito, donde se verán obligados a dirigir su atención a las figuras planas que los componen y un ulterior análisis de las propiedades de las ultimas. Se dirige la atención del presente taller a los sólidos platónicos, por su importancia histórica en la geometría clásica al ser relacionados con los 4 elementos de la naturaleza y el universo

Reflexión acerca de la visión de la Gestión Integral de vulnerabilidad por desabastecimiento de agua en zona rural de Colombia

(Eng) The present review article refers to the management and baking processes to deal with environmental problems, specifically those that have to do with risk by water supply in rural areas, making an analysis of the integral management of water, the different international and national approaches, to reach the approach in Colombia and how the country welcomes these global guidelines for the proper management of water; It also proposes the analysis of three concepts that make it possible to complement IWRM, as a central approach that promotes multiple convergences from the academic sphere, such as adaptive management, resilience and governance to strengthen the systemic approach required in the management of water under the premise of sustainability. As a conseq uence of this analysis, the microbasin is considered as a socioecosystem given the intrinsic characteristics to provide water for different uses, being adversely affected by climatic anomalies, which deserves an analysis of the vulnerability of supply micr obasins to climate change and climate variability to make a critical approach to the problems in the region in terms of management.(Spa) El presente artículo de revisión refiere a los procesos de gestión y panificación para hacer frente a problemáticas ambientales, específicamente a las que tienen que ver con la vulnerabilidad por abastecimiento de agua en las zonas rurales, haciendo un a nálisis a la gestión integral del agua, los diferentes abordajes internacionales y nacionales, para llegar al contexto nacional de Colombia y como acoge el país estos lineamientos mundiales en procura de la gestión apropiada del agua , se propone también el análisis de tres conceptos que permiten complementar la Gestión Integral del Recurso Hídrico (GIRH), como planteamiento central que promueve convergencias múltiples desde el ámbito académico como lo son: La gestión adaptativa, la resiliencia y la gober nanza para fortalecer el abordaje sistémico requerido en el manejo del agua bajo la premisa de sostenibilidad. Como consecuencia de este analisis se plantea la microcuenca como un socioecosistema dadas las características intrínsecas para proveer agua para diferentes usos, siendo estas afectadas adversamente por las anomalías climáticas lo cual merece un analisis de la vulnerabilidad de microcuencas abastecedoras ante el cambio climático y la variabilidad climática para hacer un planteamiento critico de la problemática en la región en términos de gestión

Estimacion de costos medios de produccion de vino a granel y margenes de comercializacion. Caso de Estudio: Cooperativa Agricola y Vitivinicola Loncomilla.

77 p.En este trabajo se determinaron costos medios y márgenes de comercialización en la producción de vinos a granel en la Cooperativa Agrícola y Vitivinícola Loncomilla Ltda.; localizada en la Comuna de San Javier, Séptima Región, Chile. Los datos corresponden al año 2005 y fueron obtenidos directamente de los registros de la empresa, mediante entrevistas al personal y directorio de la Cooperativa. Se utilizo el sistema de costeo por absorción para obtener los costos directos e indirectos. En los primeros se incluyo el costo de la uva, insumo de vinificación y mano de obra directa; en los segundos se incluyo a los costos alternativos y otros costos indirectos. Para calcular el costo de oportunidad del capital se ocupó la tasa de descuento relevante para la empresa utilizando el Modelo de Valorización de Activos de Capital (CAPM) y el Costo Promedio Ponderado del Capital (WACC). El costo medio total por litro de vino fue calculado sumando el costo medio de capital y el costo medio de la operación para cada variedad de vino producido por la Cooperativa y además se calcularon los respectivos márgenes de comercialización. Los principales resultados indican que en la elaboración de vinos a granel el costo de la uva es el más importante dentro de los costos directos de producción, tanto para las cepas blancas entre (88% y 92 %) como para las cepas tintas entre (76% y 90%). Con respecto al costo operativo para las cepas blancas, éste fluctúa entre (84% y 91%), para las cepas tintas fluctúa entre (69% y 77%) y el costo de capital para las cepas blancas fluctúa entre (8% y 15%) y para las cepas tintas fluctúa entre (22% y 30%) respectivamente, de los costos totales de producción. Los márgenes de comercialización presentaron resultados negativos para los diversos vinos a granel elaborados por la Cooperativa, los cuales oscilan para las cepas blancas entre (12% y 20%) y para las cepas tintas entre (42% y 59%). La principal conclusión, índica que el mayor costo que presenta la elaboración de vino a granel es el de la uva; principal agente en el proceso productivo, por lo tanto se recomienda a la Cooperativa maximizar el proceso de elaboración del vino para lograr un mejor rendimiento de la uva y así lograr un mejor margen de comercialización

Penile fracture in the general hospital of Mexico: prevalence and case series

Penile fracture is a rare urological emergency and a condition rarely reported in the literature. This lesion is produced by a break in the continuity of the tunica albuginea of corpora cavernosa, due to trauma to the erect penis. When the fracture occurs, patients may report a popping sound followed by severe pain, bruising, ecchymosis, and deformity. Diagnosis is based primarily on clinical history and examination; in some cases, ultrasound may be useful to confirm the diagnosis. It is a urological emergency that requires adequate and prompt attention in order to prevent serious sexual complications. Below, we present a series of 18 cases of penile fracture that were treated at the General Hospital of Mexico, with emphasis on sexual function after surgical repair

Comparing novel shotgun DNA sequencing and state-of-the-art proteomics approaches for authentication of fish species in mixed samples

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The AEROARMS Project: Aerial Robots with Advanced Manipulation Capabilities for Inspection and Maintenance

This article summarizes new aerial robotic manipulation technologies and methods—aerial robotic manipulators with dual arms and multidirectional thrusters—developed in the AEROARMS project for outdoor industrial inspection and maintenance (I&M). Our report deals with the control systems, including the control of the interaction forces and the compliance the teleoperation, which uses passivity to tackle the tradeoff between stability and performance the perception methods for localization, mapping, and inspection the planning methods, including a new control-aware approach for aerial manipulation. Finally, we describe a novel industrial platform with multidirectional thrusters and a new arm design to increase the robustness in industrial contact inspections. In addition, the lessons learned in applying the platform to outdoor aerial manipulation for I&M are pointed out

Analysis of labour market needs for engineers with enhanced knowledge in renewable energy in some European and Latin-American Countries

One of the main challenges related to the renewable energy labour market is that of human capital and as a consequence the educational profile of future employees is of paramount importance. Unfortunately, the skill level gained at University does not always fit with the practical needs of industry thus reducing the benefit-cost ratio of new employees and slowing down the transition to a green economy. Within this context, ‘The Crux’ project co-funded by EU under the framework of the Erasmus + programme aims at improving the renewable energy engineering curriculum at different university levels in several Universities of Latin America and Europe. In order to better appreciate the potential impact of the project, a survey on the labour market need for specialists with enhanced knowledge and skills in renewable and sustainable energy technologies has been conducted in the related EU and Latin America countries. More precisely, 60 organizations have been interviewed and almost 70% of them are interested in employing engineers with enhanced knowledge on renewable energy in the next three years. The analysis has shown significant discrepancies between EU and Latin American organizations. In fact, while future employees in EU countries will be mainly related to solar energy and management, the former together with wind and biomass will represent the main renewable energy working sector in Latin American countries. Moreover, MSc level will be the most demanded in EU while bachelor education seems to satisfy the future industry requirements in Latin America. Despite each country having its own needs, the research carried out under this EU project confirms the potential of renewable energy education on the global labour market in the near future

Assessing the carcinogenic potential of low-dose exposures to chemical mixtures in the environment: the challenge ahead.

Lifestyle factors are responsible for a considerable portion of cancer incidence worldwide, but credible estimates from the World Health Organization and the International Agency for Research on Cancer (IARC) suggest that the fraction of cancers attributable to toxic environmental exposures is between 7% and 19%. To explore the hypothesis that low-dose exposures to mixtures of chemicals in the environment may be combining to contribute to environmental carcinogenesis, we reviewed 11 hallmark phenotypes of cancer, multiple priority target sites for disruption in each area and prototypical chemical disruptors for all targets, this included dose-response characterizations, evidence of low-dose effects and cross-hallmark effects for all targets and chemicals. In total, 85 examples of chemicals were reviewed for actions on key pathways/mechanisms related to carcinogenesis. Only 15% (13/85) were found to have evidence of a dose-response threshold, whereas 59% (50/85) exerted low-dose effects. No dose-response information was found for the remaining 26% (22/85). Our analysis suggests that the cumulative effects of individual (non-carcinogenic) chemicals acting on different pathways, and a variety of related systems, organs, tissues and cells could plausibly conspire to produce carcinogenic synergies. Additional basic research on carcinogenesis and research focused on low-dose effects of chemical mixtures needs to be rigorously pursued before the merits of this hypothesis can be further advanced. However, the structure of the World Health Organization International Programme on Chemical Safety 'Mode of Action' framework should be revisited as it has inherent weaknesses that are not fully aligned with our current understanding of cancer biology

Art déco e indústria: Brasil, décadas de 1930 e 1940

Este artigo analisa as características assumidas pela arquitetura de tendência art déco em construções ligadas à indústria - moradias, igrejas, escolas, clubes, fábricas etc. - erguidas no Brasil nas décadas de 1930 e 1940, investigando o repertório formal utilizado em diferentes tipologias. Faz uma análise mais detalhada das construções criadas pela Companhia Industrial Fiação de Tecidos Goyanna, em Pernambuco, no período entre 1937 e o final da década de 1940. Trata-se de um conjunto notável pela unidade formal, vinculada à linguagem art déco, e pelo emprego de soluções inovadoras em termos de forma e de programa.The aim of this article is to analyze the characteristics of Art Deco tendencies in buildings related to the industry - as houses, churches, schools, clubs, plants etc - in Brazil during the 1930s and 1940s. It studies the formal repertory used in different types of construction and develops a more detailed analysis of a complex of constructions by the firm Companhia Industrial Fiação de Tecidos Goyanna, in the state of Pernambuco, built during the period between 1937 and the end of 1940s. The presented group of constructions is notable for the formal coherence, associated with the Art Deco language, and for the use of innovative program and form solutions