National Autonomous University of Nicaragua

About: National Autonomous University of Nicaragua is a education organization based out in Managua, Nicaragua. It is known for research contribution in the topics: Population & Public health. The organization has 775 authors who have published 715 publications receiving 9791 citations.

Elementos conceptuales para la construcción histórica de una localidad

Abstract: The present work aims to review the conceptual elements that support the historical construction of a locality; Through theories related with the microhistory and social networks. In the methodology in was proceeded to consult of the National Council of Universities (CNU), referring to books, doctoral theses, and articles related to the study object; this resource was exhausted, and the research was carried out in Google academic. For each subject, several titles were explored, the ideas related to the subject were collected, and the information was analyzed; by author and by concepts, the ideas that contributed to the basis of the research problem were selected. It is concluded that for the construction of the history of a locality, several components of the bibliographic methods must be integrated, such as: the regional and local history, historical memory, social networks, life and oral history, for the rescue of facts, events and their meanings, of a determined period of the society in a territory. It is not only about the knowledge from the past but it also implies the organization of people so that from their individuality they become part of collective thought.

Protagonismo y pasividad en la docencia humanística universitaria

Abstract: Este articulo tiene como proposito destacar la importancia de la docencia en la formacion de profesionales universitarios en el area de las humanidades y la evaluacion que, de ese proceso formativo, hace la elaboracion de un trabajo escrito con fines de obtener el titulo de licenciatura. Con base en registros etnograficos de clases de filosofia, letras e idiomas, el autor concluye que las estrategias didacticas planeadas e improvisadas en el salon de clase generan dos actitudes complementarias: el protagonismo del docente y la pasividad del alumno en el proceso de ensenanza- aprendizaje, las cuales obran en detrimento del ideal de formar habilidades para, despues de cursar el plan de estudios, hacer la tesis

Economía Ecológica y Economía Ambiental: Teoría y Valoración De Los Recursos Hídricos

Abstract: The management of water resources is one of the most important issues and to find solutions that lead to the sustainable use of them. It is crucial to the extent that it has an intrinsic value in all its possible uses (economic, biological, environmental, etc.). Under this premise, the present article makes a theoretical approach on the same that traditionally antagonistic in the management of environmental goods and services, the Ecological Economy (EE) and the Environmental Economy (EA). The discussion contrasts with the holistic of the EA with the reductionism of the EA and reflection on the virtues of each approach in the harmonization of practice to achieve the same goal, contribute to the sustainable development of communities and territories. The article has a documentary and reflective route based on the method of assessment on the main theoretical elements and presents the maximum methodological and instrumental exponents of each one so that the pertinence of the application of them can be known under an integration scheme rather than of exclusion, therefore, as an essential instrument in the formulation of any proposal for Environmental Policy.

Comparación estadística de dos técnicas metrológicas para la estimación de la incertidumbre de medición de una metodología analítica implementada en el laboratorio de aguas naturales del CIRA - UNAN-Managua

Abstract: espanolEn las diferentes metodologias de ensayos implementadas en los laboratorios a nivel internacional, existe cierta duda de la validez de los resultados reportados, por lo tanto, como requisito es obligatorio para todos los laboratorios que pretenden acreditarse de acuerdo a la norma ISO 17025, contar con una base teorica y tecnica confiable para “estimar” dicha duda denominada incertidumbre de la medicion. En este sentido el laboratorio de Aguas Naturales del CIRA-UNAN-Managua desarrollo una comparacion metrologica, utilizando como punto de partida un metodo de ensayo validado y dos tecnicas para estimar la incertidumbre (metodo GUM y metodo Kragten) ambas tecnicas consisten en la definicion clara del mensurando y comprension del procedimiento de medicion. La comparacion metrologica consistio en tomar el metodo GUM estableciendo que magnitudes influyen en la medicion, definiendo un modelo matematico que relacione las magnitudes de entrada con el mensurando, determina coeficientes de sensibilidad y finalmente estimar la incertidumbre utilizando la ley de propagacion de las incertidumbres. Por otro lado Kragten se utilizo un metodo numerico de diferenciacion que permite visualizar las componentes de mayor influencia de forma que solo se requiere conocer la forma de obtener el resultado final. EnglishIn the different testing methodologies implemented in laboratories at the international level, there is some doubt about the validity of the reported results, therefore, as a requirement is mandatory for all laboratories that intend to be accredited according to ISO 17025, to have a reliable theoretical and technical basis to “estimate” such doubt called measurement uncertainty. In this sense, the CIRA-UNAN-Managua Natural Waters laboratory developed a metrological comparison, using as a starting point a validated test method and two techniques for estimating uncertainty (GUM method and Kragten method) both techniques consist of the clear definition of measuring and understanding of the measurement procedure. Metrological comparison consisted of taking the GUM method by establishing which magnitudes influence measurement, defining a mathematical model that relates input magnitudes to measuring, determines sensitivity coefficients, and finally estimates uncertainty using the law of spread of uncertainties. On the other hand, Kragten used a numerical method of differentiation that allows visualizing the components of greater influence so that only requires knowledge of how to obtain the final result.