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El derecho a la salud de las mujeres víctimas del conflicto armado.El enfoque psicosocial (Sentencia T-045 de 2010)
Jorge Ernesto Roa Roa
Revista Derecho del Estado , 2010,
La libertad de expresión en las redes sociales y los casos de “school bullying”. La pérdida y el coste de oportunidad en la Sentencia T-713 de 2010
Jorge Ernesto Roa Roa
Revista Derecho del Estado , 2011,
La protección del espacio público y los derechos de los trabajadores informales
Jorge Roa
Revista Derecho del Estado , 2009,
Role of GnRH Neurons and Their Neuronal Afferents as Key Integrators between Food Intake Regulatory Signals and the Control of Reproduction
Juan Roa
International Journal of Endocrinology , 2013, DOI: 10.1155/2013/518046
Abstract: Reproductive function is regulated by a plethora of signals that integrate physiological and environmental information. Among others, metabolic factors are key components of this circuit since they inform about the propitious timing for reproduction depending on energy availability. This information is processed mainly at the hypothalamus that, in turn, modulates gonadotropin release from the pituitary and, thereby, gonadal activity. Metabolic hormones, such as leptin, insulin, and ghrelin, act as indicators of the energy status and convey this information to the reproductive axis regulating its activity. In this review, we will analyse the central mechanisms involved in the integration of this metabolic information and their contribution to the control of the reproductive function. Particular attention will be paid to summarize the participation of GnRH, Kiss1, NPY, and POMC neurons in this process and their possible interactions to contribute to the metabolic control of reproduction. 1. Introduction From an evolutionary point of view, the integration of the circuits controlling metabolism and reproduction is essential for the survival and perpetuation of the species. Wasting of energy on reproduction, in situations of deficit in food availability, may threaten the survival of the individuals and their progeny. Reproduction is a costly process in terms of energy consumption. Thus, in times of famine or under certain pathological conditions, which cannot ensure the correct utilization of the metabolic resources (anorexia nervosa, obesity, diabetes, lipodystrophies, etc.), the body has to define priorities to preserve physiological processes essential for survival [1]. In this sense, key physiological activities as blood circulation or neural activity cannot be compromised, whereas others, such as locomotion, thermoregulation, or growth can be reduced in conditions of metabolic stress, as occurs in hibernating animals. In the above situations, reproduction is totally dispensable or even incompatible with survival since, besides the high energetic cost required to maintain the fertility, pregnancy and nursing limit considerably the mobility for food seeking. In wildlife, animals are more dependent on seasonal fluctuations in food availability than their counterparts living under domestic conditions or humans. However, the increased prevalence in developed countries of metabolic pathologies (ranging from anorexia to obesity and metabolic syndrome) makes the study of the metabolic control of reproduction of special interest, in part due to economic reasons.
Concealed Quantum Information
Luis Roa
Physics , 2007,
Abstract: We study the teleportation scheme performed by means of a partially entangled pure state. We found that the information belonging to the quantum channel can be distributed into both the system of the transmitter and the system of the receiver. Thus, in order to complete the teleportation process it is required to perform an "unambiguous non-orthogonal quantum states discrimination" and an "extraction of the quantum information" processes. This general scheme allows one to design a strategy for concealing the unknown information of the teleported state. Besides, we showed that the teleportation and the "concealing the quantum information" process, can be probabilistically performed even though the bipartite quantum channel is maximally entangled.
Psiconeuroinmunología: breve panorámica
Camelo Roa,Sandra M.;
Diversitas: Perspectivas en Psicología , 2005,
Abstract: from the lands of the psycoimmunology, the present revision intends a panoramic look to its main postulations, investigation lines and perspectives. therefore, some historical aspects about the relationship between psychic life and health were approached initially; later on aspects like the physiology of the immune system were revised specifying kinds of both, acquired and natural immunity. subjects as interactions among immune system and brain were revised from the experimental evidence, and summarized in four groups: immune-response conditioning, brain injures, stress and immunity, and at last emotions and immunity. finally were contemplated some methods for the study of the immune system as the rehearsals in vitro, effusion citometry and rehearsals alive. as final observations, the whole literature suggests relationship among immune system and diverse psychic states. nevertheless, some questions from this unquestionable relationship even arise without having a satisfactory answer.
Formación de profesores en el paradigma de la complejidad
Roa Acosta,Robinson;
Educación y Educadores , 2006,
Abstract: as a result of a big bibliographic review about the complexity paradigm, the classic paradigm of sciences and the teaching and didactics of science specially in regards to teacher training and the concepts about the nature of science, this paper makes a contrast between these paradigms in the light of the traditional pedagogic models and, to a certain extent, of the constructivist one, and their influence on the formation of concepts about the nature, origin and knowledge of science in teachers and students. it enunciates the idea of changing the way of teaching sciences starting from the training of future teachers under the paradigm of complexity, thus avoiding the reductionist and deterministic conceptions. on the other hand, relevant aspects are proposed in order to design and develop teaching and learning methodologies of science in and for complexity and at the same time a space is opened to approach evaluation under this paradigm.
Análisis del papel de la disposición a pagar (DAP) de los consumidores, por panela ecológica y pulverizada convencional, en la internalización de las externalidades derivadas del uso y apropiación de los recursos naturales y el territorio
Roa,Zulma del Pilar;
Agroalimentaria , 2006,
Abstract: the production of goods and services generates a series of positive and negative externalities for society, that is, additional or external benefits and or costs. similarly, food production presents this condition of generating externalities. valuing them and incorporating them is a central element to determine the multi-functionality of the local food and agricultural systems (lfas) as well as thinking of the territory as an important factor for rural and environmental policy. taking off from this consideration, this work attempts to be a first effort towards valuing these external benefits derived from the use and appropriation of the localized natural resources in a specific territory. for this, research carried out in the year 2001, were used as a reference in which the atp of bogotá, colombia, for ecological and conventional pulverized brown sugar.
Los Jóvenes de Familias Tareferas de los Barrios Periurbanos: ?La Generación del Cambio?
Luz Roa,María;
Psicoperspectivas , 2012, DOI: 10.5027/psicoperspectivas-Vol11-Issue1-fulltext-170
Abstract: from the mid-90's in the province of misiones there was generated a process of expulsion of agricultural workers living in the countryside. this population was concentrated in the periurban areas of intermediate cities in the province, and today they depend on the temporary work in the yerba mate harvest ?tarefa- and occasional jobs in town. as part of these processes, young people are the first generation who was socialized in such territories. this study aims to understand and explain the young people contributions to the family reproduction strategies, in the case of families from the suburban areas of the oberá city, whose members work as yerba mate harvesters. in this regard, we observe substantial transformations between current contributions and those young people made when they resided in the country side -generation of their fathers and mothers-, which vary by gender and family types. to assess these processes, we adopt a triangular approach, combining data from a inquest of peri-urban households in oberá and qualitative information from ethnographic fieldworks.
La noción de trabajo en los andes de la venezuela rural: Estudio de caso
Medina Roa,Anderzon;
Boletin de Linguistica , 2007,
Abstract: within the framework of critical discourse analysis (cda), the speech of an elderly middle-class man inmerida (venezuela) is examined in this study. the aim is to reveal his idiosyncratic construction of the concept work. based on the analysis of both linguistic and extra-linguistic elements, the discourse topics have been identified, and the lexical items associated with the notion of work have been examined. additionally, the social and historical context has been used to characterize the speaker as a member of his speech community. this study has enabled the researcher to reconstruct the speaker?s notion of work using a cda approach
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