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Search Results: 1 - 10 of 8282 matches for " Moreno "
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Characterization of Peaks and Valleys of Electricity Demand. Application to the Spanish Mainland System in the Period 2000-2020  [PDF]
Fermín Moreno
Energy and Power Engineering (EPE) , 2011, DOI: 10.4236/epe.2011.34066
Abstract: Energy planning must anticipate the development and strengthening of power grids, power plants construction times, and the provision of energy resources with the aim of increasing security of supply and its quality. This work presents a methodology for predicting power peaks in mainland Spain’s system in the decade 2011-2020. Forecasts of total electricity demand of Spanish energy authorities set the boundary conditions. The accuracy of the results has successfully been compared with records of demand (2000-2010) and with various predictions published. Three patterns have been observed: 1) efficiency in the winter peak; 2) increasing trend in the summer peak; 3) increasing trend in the annual valley of demand. By 2020, 58.1 GW and 53.0 GW are expected, respectively, as winter and summer peaks in a business-as-usual scenario. If the observed tendencies continue, former values can go down to 55.5 GW in winter and go up to 54.7 GW in summer. The annual minimum valley of demand will raise 5.5 GW, up to 23.4 GW. These detailed predictions can be very useful to identify the types of power plants needed to have an optimum structure in the electricity industry.
Neoliberalismo económico y reforma educativa.
Prudenciano Moreno Moreno
Perfiles educativos , 1995,
Abstract: El autor analiza el papel que ha tenido la educación en el desarrollo del liberalismo económico, tanto en la práctica como en el terreno teórico, y conforme a la evolución de la tesis del capital y el interés formulada por las diferentes generaciones de neoclásicas, para se alar los efectos concretos de la política neoliberal en los sistemas educativos en general, y de México en particular, en la actualidad.
La vinculación educación-empleo y el PDE 1995-2000
Prudenciano Moreno Moreno
Perfiles educativos , 1997,
Abstract: Se expone el modelo de educación basado en normas de competencia, el cual se inicia a principios de los noventa en México y Brasil, con el propósito de integrar la política educativa a la economía, dentro del nuevo contexto social derivado de la globalización
Evidencia de las intervenciones psicosociales en el manejo del estrés del cuidador de pacientes con demencia
Jhon Alexander Moreno Moreno
Tesis Psicológica , 2008,
Abstract: Las demencias corresponden a una epidemia actual con amplias consecuencias para nuestro sistema sanitario. Se trata de un síndrome cuyos síntomas involucran al paciente y a la familia. El estrés de los cuidadores de pacientes con demencia y sus efectos negativos para la salud hacen parte de un fenómeno que requiere cada vez mayor participación de las ciencias de la salud. Se presenta una revisión de las intervenciones para el manejo del estrés, la ansiedad, la depresión y la sobrecarga en cuidadores de pacientes con demencia desde una perspectiva psicosocial. Se resalta el papel de la investigación actual en cuidadores colombianos y se se ala la importancia del dise o de intervenciones basadas en la evidencia, adaptadas a nuestra cultura y contexto.
REFLEXIONES SOBRE LA CRECIENTE CONGESTIóN DE LA ADMINISTRACIóN DE JUSTICIA EN MATERIA CIVIL PARA EL CASO COLOMBIANO
Luis Agapito Moreno Moreno
Prolegómenos. Derechos y Valores , 2009,
Abstract: Existe una bomba de tiempo en la administración de justicia en materia civil. Siendo este un Servicio público de carácter fundamental según la Carta Política, no es concebible que el Honorable Consejo Superior de la Judicatura en sus largos dieciocho a os de existencia, no haya creado mecanismos apropiados y efectivos para que los Despachos Judiciales puedan cumplir el precepto constitucional de una pronta y cumplida administración de justicia.
The Time Course of D1 Agonist Induced Striatonigral ERK1/2 Signaling in a Rat Model of Parkinson’s Disease  [PDF]
Cicely Moreno, Subbiah P. Sivam
Journal of Behavioral and Brain Science (JBBS) , 2012, DOI: 10.4236/jbbs.2012.21001
Abstract: Using a rat model of hemiparkinsonism, we examined the time-course of D1 agonist, SKF-38393-induced changes in extracellular signaling regulated kinases 1/2 (ERK1/2) phosphorylation in the striatum and substantia nigra (SN). We unilaterally lesioned the rat median forebrain bundle with 6-hydroxydopamine. Dopaminergic lesioned rats were administered with SKF-38393 and perfused at 15, 30, 60, or 120 minutes after the drug. Immunohistochemical analysis of striatum and SN revealed, as expected, a loss of tyrosine hydroxylase and a decrease of substance P in lesioned rats. SKF-38393 induced a robust increase in phospho-ERK1/2 levels in the lesioned striatum, which peaked at 15 min and substantially declined by 120 min. We report for the first time that similar changes were observed in the SN. The time-dependent ERK 1/2 activation in the striatonigral neurons may play a role in the therapeutic and/or side effects such as dyskinesias related to the dopamine agonist treatment for Parkinson’s disease.
Game Theory Applications in a Water Distribution Problem  [PDF]
Ardeshir Ahmadi, Raquel Salazar Moreno
Journal of Water Resource and Protection (JWARP) , 2013, DOI: 10.4236/jwarp.2013.51011
Abstract:

A water distribution problem in the Mexican Valley is modeled first as a three-person noncooperative game. Each player has a five-dimensional strategy vector, the strategy sets are defined by 15 linear constraints, and the three payoff functions are also linear. A nonlinear optimization problem is first formulated to obtain the Nash equilibrium based on the Kuhn-Tucker conditions, and then, duality theorem is used to develop a computational procedure. The problem can also be considered as a conflict between the three players. The non-symmetric Nash bargaining solution is suggested to find the solution. Multiobjective programming is an alternative solution concept, when the water supply of the three players are the objectives, and the water authority is considered to be the decision maker. The optimal water distribution strategies are determined by using these solution concepts and methods.

Using Neural Networks for Simulating and Predicting Core-End Temperatures in Electrical Generators: Power Uprate Application  [PDF]
Carlos J. Gavilán Moreno
World Journal of Engineering and Technology (WJET) , 2015, DOI: 10.4236/wjet.2015.31001
Abstract: Power uprates pose a threat to electrical generators due to possible parasite effects that can develop potential failure sources with catastrophic consequences in most cases. In that sense, it is important to pay close attention to overheating, which results from excessive system losses and cooling system inefficiency. The end region of a stator is the most sensitive part to overheating. The calculation of magnetic fields, the evaluation of eddy-current losses and the determination of loss-derived temperature increases, are challenging problems requiring the use of simulation methods. The most usual methodology is the finite element method, or linear regression. In order to address this methodology, a calculation method was developed to determine temperature increases in the last stator package. The mathematical model developed was based on an artificial intelligence technique, more specifically neural networks. The model was successfully applied to estimate temperatures associated to 108% power and used to extrapolate temperature values for a power uprate to 113.48%. This last scenario was also useful to test extrapolation accuracy. The method is applied to determine core-end temperature when power is uprated to 117.78%. At that point, the temperature value will be compared to with the values obtained using finite elements method and multivariate regression.
Design and Construction of “Synthetic Species”
Eduardo Moreno
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0039054
Abstract: Synthetic biology is an area of biological research that combines science and engineering. Here, I merge the principles of synthetic biology and regulatory evolution to create a new species with a minimal set of known elements. Using preexisting transgenes and recessive mutations of Drosophila melanogaster, a transgenic population arises with small eyes and a different venation pattern that fulfils the criteria of a new species according to Mayr’s Biological Species Concept. The population described here is the first transgenic organism that cannot hybridize with the original wild type population but remains fertile when crossed with other identical transgenic animals. I therefore propose the term “synthetic species” to distinguish it from “natural species”, not only because it has been created by genetic manipulation, but also because it may never be able to survive outside the laboratory environment. The use of genetic engineering to design artificial species barriers could help us understand natural speciation and may have practical applications. For instance, the transition from transgenic organisms towards synthetic species could constitute a safety mechanism to avoid the hybridization of genetically modified animals with wild type populations, preserving biodiversity.
The customization of APACHE II for patients receiving orthotopic liver transplants
Rui Moreno
Critical Care , 2002, DOI: 10.1186/cc1485
Abstract: In this issue of Critical Care, Arabi and co-workers present the results of the validation of a modified model of the Acute Physiology and Chronic Health Evaluation (APACHE) II for patients receiving orthotopic liver transplants [1]. They retrospectively used data from 174 patients admitted to two hospitals (King Fahad National Guard Hospital in Riyadh, Saudi Arabia, and the University of Wisconsin Madison, WI, USA) to validate the modification of the APACHE II prognostic model described by Derek Angus and colleagues [2]. Is the approach of Arabi and co-workers correct? Can the results and the approach be generalized to other settings?Described in 1985 [3], the APACHE II prognostic system is one of the most widely used general outcome models. Developed for use with unselected groups of critically ill adults, the system uses three types of data to provide the user with a probability of death at hospital discharge: these date are the Acute Physiology Score (APS), based on the most deranged physiological and laboratory values during the first 24 hours in the intensive care unit (ICU); the premorbid status, based on a list of chronic diseases and conditions apparent at admission to hospital; and the diagnostic category, based on a list of 29 medical and 24 surgical diagnoses.Because the system was developed in the early 1980s, several diseases and conditions were not well represented in the original database. This fact, together with major changes in the outcome of major diseases and the need to incorporate other variables, led the authors to undertake a major update, the APACHE III prognostic system, published in 1991 [4]. This updated system, being commercial, has not had the impact of its free predecessor. With better calibration, probably reflecting more the updated database than major changes in the statistical construct of the model, it was found to be quite well calibrated for the USA [5], except in diagnostic groups for which major changes have been made to the
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