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Search Results: 1 - 10 of 1299 matches for " Villanueva-Solis "
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Urban Heat Island Mitigation and Urban Planning: The Case of the Mexicali, B. C. Mexico  [PDF]
Jorge Villanueva-Solis
American Journal of Climate Change (AJCC) , 2017, DOI: 10.4236/ajcc.2017.61002
Abstract: The derivations of climate change on cities and their activities depend on their capacity for adaptation and mitigation. In this sense, it has long recognized the influence of cities on their own climate, which is typically warmer than the surrounding. This phenomenon called urban heat island (UHI) has a number of impacts on air quality, water demand and energy. Since the fourth IPCC assessment report indicates the need for urban centers devoting efforts to adaptation to reduce the risks of direct and indirect impacts of climate change. The same organization recognizes the urban planning as a tool to seek such order. However, it also recognizes that the current scale of climate models cannot provide a representation of urban areas. This paper explores the intensification of the UHI, its relationship with urban expansion and its impact on housing in the city of Mexicali, B.C. Its aim is to determine its impact and mitigation potential through analysis and modeling of urban structure, expressed in use and land cover, as well as the implementation of mitigation strategies. The results show on the one hand, the convenience of using dynamic modeling as a tool applied to urban planning with a focus on mitigation and adaptation to climate change. Furthermore, regarding the implementation of strategies, the results show that most efficiency is obtained when applied generally, this is, considering green and cool roofs, cool pavements and afforestation as part of urbanization process, otherwise, only partial results are achieved. Overall, housing land use has significant potential to mitigate the UHI in the city.
Isla de Calor Urbana: Modelación Dinámica y Evaluación de medidas de Mitigación en Ciudades de Clima árido Extremo
Villanueva-Solis,Jorge; Ranfla,Arturo; Quintanilla-Montoya,Ana L;
Información tecnológica , 2013, DOI: 10.4067/S0718-07642013000100003
Abstract: the objective was to determine the potential mitigation of the urban heat island in a city sector of mexicali (baja california, méxico). the potential was determined through modeling the urban fabric; expressed in land use, land cover, and buildings as well as, the ability to implement mitigation strategies. the results show that under the current land use fabric and local climate change scenarios, the mitigation of temperature can be up to 8 °c., at 2080 year. based on the results, we conclude that dynamic modeling is a useful and an applicable tool, in the urban planning process of adaptation to climate change.
Isla de Calor Urbana: Modelación Dinámica y Evaluación de medidas de Mitigación en Ciudades de Clima árido Extremo Urban Heat Island: Dynamic Modeling and Mitigation Measures Evaluation, in Extreme arid Climate Cities
Jorge Villanueva-Solis,Arturo Ranfla,Ana L Quintanilla-Montoya
Información Tecnológica , 2013,
Abstract: El objetivo del trabajo fue determinar el potencial de mitigación de la Isla de Calor Urbana para un sector de la ciudad de Mexicali (Baja California, México). El potencial fue determinado a través del modelado de la estructura urbana, expresado en usos y cobertura del suelo, así como en edificaciones y en las posibilidades de aplicar, estrategias de mitigación. Los resultados obtenidos muestran que bajo la estructura actual de usos del suelo y escenarios de cambio climático local, la mitigación de temperatura puede llegar a ser hasta de 8°C, para el a o 2080. Con base en los resultados se concluye que ante las necesidades de adaptación al cambio climático, la modelación dinámica es una herramienta útil y aplicable al proceso de planeación urbana. The objective was to determine the potential mitigation of the Urban Heat Island in a city sector of Mexicali (Baja California, México). The potential was determined through modeling the urban fabric; expressed in land use, land cover, and buildings as well as, the ability to implement mitigation strategies. The results show that under the current land use fabric and local climate change scenarios, the mitigation of temperature can be up to 8 °C., at 2080 year. Based on the results, we conclude that dynamic modeling is a useful and an applicable tool, in the urban planning process of adaptation to climate change.
The Unexpected Bioenergetic Function of Neuromelanin. Implications in the Biology of Learning and Memory  [PDF]
Arturo Solis Herrera, Ruth I. Solis Arias
Natural Science (NS) , 2017, DOI: 10.4236/ns.2017.911036
Abstract: Progressive Recent Memory loss is the main complaint in Alzheimer’s disease patients. There is not a simple or congruous explanation yet due to highly complex mechanisms by which the Central Nervous System store and organize experiences every day, developed along 4 billion years of evolution; thereby learning and memory are poorly understood biological processes. The finding of the unsuspected intrinsic property of melanin to transforms light into chemical energy through water dissociation, as chlorophyll in plants; opens a new and wider horizon in the form in which the CNS generate and distribute chemical energy transporting it through molecular hydrogen produced by substantia nigra of mesencephalon and other pigmented structures. The mechanisms by which human modifies their behavior through learning and memory remain a mystery despite several decades of research. However, the?unexpected role of melanin molecule bioenergetics of first order, very above the chlorophyll and glucose, indicates?that the study of the fascinating processes involved in learning and memory several levels, needs to be started with the study of the generation and distribution of energy neuro-melanin-releasing to all the brain. In this article, we explain succinctly, the way hydrogen molecular (H2)-gas-, from the dissociation of water by the neuro melanin, moves from its source and permeates easily through the different structures of the Central Nervous System, as well as be the smaller atom, does not combine with water, moving through it in accordance with the laws of the simple diffusion. Molecular hydrogen is the main carrier of energy that nature uses in the entire universe, so that, once the neuro melanin separates it from the water, this displaces transporting its precious cargo of energy and its remarkable antioxidant capacity capable of reduce oxygen and form water.
Fuzzy-Neuro Model for Intelligent Credit Risk Management  [PDF]
Elmer P. Dadios, James Solis
Intelligent Information Management (IIM) , 2012, DOI: 10.4236/iim.2012.425036
Abstract: This paper presents hybrid fuzzy logic and neural network algorithm to solve credit risk management problem. Credit risk is the risk of loss due to a debtor’s non-payment of a loan or other line of credit. A method of evaluating the credit worthiness of a customer is complex and non-linear due to the diverse combinations of risk involve. To address this problem a credit scoring method is proposed in this paper using hybrid fuzzy logic-neural network (HFNN) model. The model will be implemented, tested, and validated for individual auto loans using real life bank data. The neural network is used as the learner and the fuzzy logic is used as the implementer. The neural network will fine tune the fuzzy sets, remove redundant input variables, and extract fuzzy rules. The extracted fuzzy rules are evaluated to retain the best k number of rules that will give final and intelligent decisions. The experiment results show that the perform-ance of the proposed HFNN model is very accurate, robust, and reliable. Comparison of these results to other previous published works is also presented in this paper.
A Wonderful Embedding of the Loop Group
Pablo Solis
Mathematics , 2012,
Abstract: Index of notation added. Shortening of some section, simplification of some of the arguments, some small added results and strengthening of thm 3.10. Also a significant re-writing of the last section.
A complete degeneration of the moduli of $G$-bundles on a curve
Pablo Solis
Mathematics , 2013,
Abstract: For a semi simple group G it is known the moduli stack of principal G-bundles over a fixed nodal curve is not complete. Finding a completion requires compactifying the group G. However it was shown in [34] that this is not sufficient to complete the moduli stack over a family of curves. In this paper I describe how to use an embedding of the loop group LG to provide a completion of the stack of G-bundles over a one dimensional family of curves degenerating to a nodal curve. The completion comes with a modular interpretation inspired by the work of Gieseker, Seshadri, Kausz and Thaddeus and Martens.
La práctica docente en la educación preescolar: Autonomía o control?
Nancy Beatriz Villanueva Villanueva
Nueva antropología , 1993,
Abstract:
Family Medicine, the specialty of the future: the Portuguese situation within the European context
Tiago Villanueva
International Archives of Medicine , 2009, DOI: 10.1186/1755-7682-2-36
Abstract: General Practice/Family holds tremendous latent potential, and is thus a specialty with a bright future ahead. It could well establish itself as the specialty of the future if it is able to overcome the barriers that currently make of General Practice/Family Medicine an unpopular career choice. It is important to train confident, competent and polyvalent family physicians, but it is also necessary to overhaul payment schemes, to invest in primary care infra-structure and organization, and to continue to attract more and more bright and motivated trainees.In the 24th January 2009 issue of the Portuguese weekly newspaper "Expresso", Dr Luís Pisco, then President of the Portuguese Association of General Practitioners said: "today's freshers are the most brilliant students from their schools, and wish to pursue a technologically-driven specialty and make substantial amounts of money[1]."This isn't a new phenomenon. General Practice has always lagged behind hospital specialties in terms of pulling power for the future generations of specialists.In a recent article, Dr Juan Gérvas defined Primary Health Care as "all the accessible and comprehensive services available to citizens for the follow-up of their health problems. Specialists, Hospitals and emergency departments provide services focused on problems, whereas primary health care is focused on person-centred care[2]."According to the European Society of General Practice/Family Medicine (WONCA Europe), "General practitioners/family doctors are specialist physicians trained in the principles of the discipline. They are personal doctors, primarily responsible for the provision of comprehensive and continuing care to every individual seeking medical care regardless of age, sex and illness[3]. "Core competencies of General practitioners/family doctors include primary care management, person-centred care, specific problem solving skills, comprehensive approach, community orientation, and a holistic approach[3].The clinical
La acreditación en contexto de cambio: el caso de las carreras de ingeniería en la Argentina
Villanueva, Ernesto;
Avalia??o: Revista da Avalia??o da Educa??o Superior (Campinas) , 2008, DOI: 10.1590/S1414-40772008000300009
Abstract: it is common place within academic and political discussions on higher education to affirm its key role in the development of any society. however, this assertion does not solve the question about what kind of education, to what development, for what society. this implies the recognition of the historical and political character of that relationship, since the answer to the question on what education for what society has not been nor can it always be the same; and whatever the answer, it always has to be part of a political project that views the problems of the society as a whole. with those assumptions on the horizon, we propose a reflection on the situation and perspectives of higher education in latin america: it is a view that, first, assesses the changes occurred during the last years, to then consider the present context of higher education in the region and the challenges which must generate new answers in order to be faced. we attempt to make a contribution to the debate that poses in the center the question of what education we can and must promote in order to build a society with an autonomous cultural and productive development; with dialog and participation in the international scenario; and also with equity, integration and solidarity.
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