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Search Results: 1 - 10 of 20858 matches for " Miguel Gonzalez "
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Smoothing of ribbons over curves
Miguel Gonzalez
Mathematics , 2003,
Abstract: We prove that ribbons, i.e. double structures associated with a line bundle $\SE$ over its reduced support, a smooth irreducible projective curve of arbitrary genus, are smoothable if their arithmetic genus is greater than or equal to $3 $ and the support curve possesses a smooth irreducible double cover with trace zero module $\SE$. The method we use is based on the infinitesimal techniques that we develop to show that if the support curve admits such a double cover then every embedded ribbon over the curve is ``infinitesimally smoothable'', i.e. the ribbon can be obtained as central fiber of the image of some first--order infinitesimal deformation of the map obtained by composing the double cover with the embedding of the reduced support in the ambient projective space containing the ribbon. We also obtain embeddings in the same projective space for all ribbons associated with $\SE$. Then, assuming the existence of the double cover, we prove that the ``infinitesimal smoothing'' can be extended to a global embedded smoothing for embedded ribbons of arithmetic genus greater than or equal to 3. As a consequence we obtain the smoothing results.
Políticas de forma??o de educadores(as) do campo
Arroyo, Miguel Gonzalez;
Cadernos CEDES , 2007, DOI: 10.1590/S0101-32622007000200004
Abstract: the rural social movements have included two basic points in the political agenda of governments, society and training courses: the right to education of rural groups and the urgent need to implement public policies that guarantee such a basic right. social movements are accumulating experiences from training courses in partnership with regular schools and pedagogy courses, to obtain educators able to work within the social and cultural specificities of people living in rural areas. we intend to go over the construction of such remarkable experiences to interpret the meaning within the actual context in order to postulate elements that allow the formulation of policies for training educators for rural schools. we also intend to bring forth issues for research and particularly for curricular proposals regarding training courses that actually train educators and guarantee the right to education of people living in rural areas.
Gonzalez Vallejos,Miguel;
Revista de filosofía , 2010, DOI: 10.4067/S0718-43602010000100007
Abstract: in this article the author analyzes the concept of "practical law " as developed by kant in his critique of practical reason. the author notes the roots of this concept in the modern school of natural law and states that this concept represents a shift from an ethic of obligation to an ethic of autonomy. in addition, the author analyzes the essential features of the "practical law" concept; the philosophical problems that arise from it, and the place of this concept in the landscape of kantian ethics and moral philosophy.
Factum de la razón y conciencia moral Acerca de la normatividad en la moral kantiana
Gonzalez Vallejos,Miguel;
Veritas , 2012, DOI: 10.4067/S0718-92732012000200006
Abstract: the purpose of this article is to argue that the kant′s factum of reason doctrine raised in his work the critique of practical reason it is insufficient to explain the normative role of the practical law and, for this reason, it is necessary to search for a direct evidence of the ?normative pressure? practices must be sought, therefore, that moral laws have on us. this evidence can be found, according to the thesis on this article, on the phenomenology of consciousness developed by kant in the doctrine of virtue, part ii of the metaphysics of morals.
Factum de la razón y conciencia moral Acerca de la normatividad en la moral kantiana Factum of the reason and moral consciousness About normativness in Kantian moral
Miguel Gonzalez Vallejos
Veritas : Revista de Filosofía y Teología , 2012,
Abstract: La tesis central de este artículo sostiene que la doctrina del factum de la razón planteada en la Crítica de la razón práctica es insuficiente para dar cuenta de la normatividad de las leyes prácticas y que debe buscarse, por lo tanto, una evidencia directa de la presión normativa que las leyes morales ejercen sobre nosotros. Esta evidencia puede ser encontrada, de acuerdo a la tesis del autor, en la fenomenología de la conciencia que Kant desarrolla en la Doctrina de la Virtud, segunda parte de la Metafísica de las Costumbres. The purpose of this article is to argue that the Kant′s factum of reason doctrine raised in his work the Critique of Practical Reason it is insufficient to explain the normative role of the practical law and, for this reason, it is necessary to search for a direct evidence of the normative pressure practices must be sought, therefore, that moral laws have on us. This evidence can be found, according to the thesis on this article, on the phenomenology of consciousness developed by Kant in the Doctrine of Virtue, Part II of the Metaphysics of Morals.
Application of AHP in the Design of a Strategy Map  [PDF]
Luis E. Quezada, Pedro I. Palominos, Miguel A. Gonzalez
iBusiness (IB) , 2013, DOI: 10.4236/ib.2013.53B028

This paper presents an application of the Analytic Hierarchy Process (AHP) to support the creation of a strategy map. A strategy map is a representation of the cause-effect relationships between strategic objectives of a Balanced Scorecard (BSC). The method proposed establishes the relationships that are important within the strategy map. The case of seven companies is presented, where the method is applied and the results are compared with the actual maps defined by the companies. The comparison is made to determine in which extend the proposed method is useful for establishing the causal relationships in a strategy map.

Genetic epidemiology: Giant cell arteritis and polymyalgia rheumatica
Miguel A Gonzalez-Gay
Arthritis Research & Therapy , 2001, DOI: 10.1186/ar293
Abstract: Giant cell arteritis (GCA) (temporal arteritis) constitutes a common vasculitic syndrome in European and North American countries that affects large and middle-sized blood vessels, with a predisposition to the cranial arteries, in people generally over 50 years of age [1].Polymyalgia rheumatica (PMR) is also a common syndrome in people over the age of 50. The symptoms are pain, aching, and morning stiffness involving the neck, the shoulder girdle, and the hip girdle, which are generally associated with an elevated erythrocyte sedimentation rate [2]. PMR and GCA are related diseases, as PMR may be the presenting manifestation of GCA and is found in up to 50% of patients with GCA [2]. However, PMR is sometimes an isolated condition unrelated to GCA. The possibility of a genetic influence on susceptibility to GCA was initially supported by reports of cases of GCA among first-degree relatives.GCA is the best example of an association between vasculitis and genes that lie within the HLA class II region [3]. Most studies have shown an association with HLA-DRB1*04 alleles [4]. In addition, the risk of visual complications is also associated with HLA-DRB1*04 alleles [1]. Unlike PMR in the context of GCA, which is mostly associated with HLA-DRB1*04, the susceptibility to isolated PMR associated with HLA class II genes varies from one population to another [4]. Relapses of PMR, however, have been found to be significantly more common in patients who have the HLA-DRB1*04 allele, and particularly in those carrying the HLA-DRB1*0401 allele [5]. A lack of homozygosity of the shared epitope in GCA has been reported in northwestern Spain [4] and Rochester, Minnesota [6]. This finding contrasts with observations regarding rheumatoid arthritis (RA), where homozygosity of the shared epitope is generally associated with additional risk of a more severe disease. These findings suggest that the pathology seen in GCA may be due to antigenic cross-reactivity or hypersensitivity after expos
Health policy and systems research agendas in developing countries
Miguel A Gonzalez-Block
Health Research Policy and Systems , 2004, DOI: 10.1186/1478-4505-2-6
Abstract: The main objective is to identify the themes currently being pursued in the research portfolio and agendas within developing countries and to quantify their frequency in an effort to identify current research topics and their underlying influences.HPSR topics being pursued by developing country producer institutions and their perceived priorities were identified through a survey between 2000 and 2002. The response to a call for letters of intent issued by the Alliance in 2000 for a broad range of topics was also analyzed. The institutions that were the universe of this study consisted of the 176 institutional partners of the Alliance for Health Policy and Systems Research producing research in low and middle income countries outside Europe. HPSR topics as well as the beneficiaries or issues and the health problems addressed were content analyzed. Topics were classified into 19 categories and their frequency analyzed across groups of countries with similar per capita income. Agendas were identified by analyzing the source of funding and of project initiation for projects under implementation.The highest ranking topic at the aggregate level is "Sector analysis", followed by "Disease burden" and "Management and organization". Categories at the bottom of this ranking are "Equity", "Policy process", "Economic policy and health" and "Information systems". "Disease burden" is more often funded than other topics for which there is more demand or perceived priority. Analysis suggests few although important differences across priorities, demand for funding and actual project funding. The donors' agenda coincides most with the ranking of research topics overall.Ranking across country income groups shows important differences. Topics that gain prominence in low income countries are "Disease burden" and "Accessibility". In lower middle income countries "Insurance" gains prominence. In upper middle income countries "Decentralization/local health systems", "Equity" and "Policy pro
Regularization of spherically symmetric evolution codes in numerical relativity
Miguel Alcubierre,Jose A. Gonzalez
Physics , 2004, DOI: 10.1016/j.cpc.2005.01.008
Abstract: The lack of regularity of geometric variables at the origin is often a source of serious problem for spherically symmetric evolution codes in numerical relativity. One usually deals with this by restricting the gauge and solving the hamiltonian constraint for the metric. Here we present a generic algorithm for dealing with the regularization of the origin that can be used directly on the evolution equations and that allows very general gauge choices. Our approach is similar in spirit to the one introduced by Arbona and Bona for the particular case of the Bona-Masso formulation. However, our algorithm is more general and can be used with a wide variety of evolution systems.
Asymptotically flat spacetimes in 3D bigravity
Hernan A. Gonzalez,Miguel Pino
Physics , 2012, DOI: 10.1103/PhysRevD.86.084045
Abstract: We report that a class of three-dimensional bimetric theories contain asymptotically flat solutions. These spacetimes can be cast in a set of asymptotic conditions at null infinity which are preserved under the infinite dimensional BMS group. Moreover, the algebra of the canonical generators exhibits a central extension. The possibility that these solutions describe regular black holes is also discussed.
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