3 resultados para Random matrix theory
em Universidad del Rosario, Colombia
Resumo:
Este documento consiste en un plan exportador para Escobar y Martínez, especialmente para su marca GOLTY. La primera parte es el análisis y diagnóstico de la compañía con base en la matriz del Boston Consulting Group, seguida del análisis de mercado, realizado con fuentes secundarias que logra identificar cómo el Reino Unido es un mercado con una conciencia creciente sobre los deportes, dispuestos a pagar por alta calidad, similar a lo sucedido con España y Francia La selección de mercados se realiza por medio de la matriz de Proexport con base en los resultados de la investigación con fuentes secundarias. Finalmente, se usa una de las más importantes teorías de la administración, como lo es la teoría matricial, para sugerir algunas estrategias a seguir con el fin de tener un proceso de exportación exitoso hacia los mercados del Reino Unido, España y Francia.
Resumo:
In populational sampling it is vitally important to clarify and discern: first, the design or sampling method used to solve the research problem; second, the sampling size, taking into account different components (precision, reliability, variance); third, random selection and fourth, the precision estimate (sampling errors), so as to determine if it is possible to infer the obtained estimates from the target population. The existing difficulty to use concepts from the sampling theory is to understand them with absolute clarity and, to achieve it, the help from didactic-pedagogical strategies arranged as conceptual “mentefactos” (simple hierarchic diagrams organized from propositions) may prove useful. This paper presents the conceptual definition, through conceptual “mentefactos”, of the most important populational probabilistic sampling concepts, in order to obtain representative samples from populations in health research.
Resumo:
We study the role of natural resource windfalls in explaining the efficiency of public expenditures. Using a rich dataset of expenditures and public good provision for 1,836 municipalities in Peru for period 2001-2010, we estimate a non-monotonic relationship between the efficiency of public good provision and the level of natural resource transfers. Local governments that were extremely favored by the boom of mineral prices were more efficient in using fiscal windfalls whereas those benefited with modest transfers were more inefficient. These results can be explained by the increase in political competition associated with the boom. However, the fact that increases in efficiency were related to reductions in public good provision casts doubts about the beneficial effects of political competition in promoting efficiency.