Fractional Driven Damped Oscillator

The resonances associated with a fractional damped oscillator which is driven by an oscillatory external force are studied. It is shown that such resonances can be manipulated by tuning up either the coefficient of the fractional damping or the order of the corresponding fractional derivatives.Comment: 5 pages, 1 Figure. A misprint appearing in Eq. (6) of the published version is amended. Based on the work presented by F. Olivar-Romero in the Quantum Fest 2016: International Conference on Quantum Phenomena, Quantum Control and Quantum Optics, 17-21 October 2016, Mexico City, Mexic

Hispanic Center

The Hispanic Community Development Action Project, that I initiated in the fall of 1996 was to create a Hispanic center. The goal of this project was to establish a center that would advocate participation in identifying issues and possible responses in the areas that concern Latinos. The aim was to bring as many members of the community together as possible in an effort to make a positive impact on economic development projects and other community issues, while at the same time forming a citywide coalition of Hispanics and non-Hispanics to work on these and future issues on an ongoing basis. This coalition of Hispanics and others will collaborate with the Hispanic Center in identifying research and outreach needs, assess the implementation process, and advise the faculty on changing needs and opportunities in the community. (Author abstract)Rosas, F. (1998). Centro Hispano (Hispanic Center). Retrieved from http://academicarchive.snhu.eduMaster of Science (M.S.)School of Community Economic Developmen

Ultra Reliable UAV Communication Using Altitude and Cooperation Diversity

The use of unmanned aerial vehicles (UAVs) that serve as aerial base stations is expected to become predominant in the next decade. However, in order for this technology to unfold its full potential it is necessary to develop a fundamental understanding of the distinctive features of air-to-ground (A2G) links. As a contribution in this direction, this paper proposes a generic framework for the analysis and optimization of the A2G systems. In contrast to the existing literature, this framework incorporates both height-dependent path loss exponent and small-scale fading, and unifies a widely used ground-to-ground channel model with that of A2G for analysis of large-scale wireless networks. We derive analytical expressions for the optimal UAV height that minimizes the outage probability of a given A2G link. Moreover, our framework allows us to derive a height-dependent closed-form expression and a tight lower bound for the outage probability of an \textit{A2G cooperative communication} network. Our results suggest that the optimal location of the UAVs with respect to the ground nodes does not change by the inclusion of ground relays. This enables interesting insights in the deployment of future A2G networks, as the system reliability could be adjusted dynamically by adding relaying nodes without requiring changes in the position of the corresponding UAVs

La contradicción de México en 2012 a los flujos de Inversión Extranjera Directa, una explicación desde las teorías del comercio internacional

Las teorías surgen como una explicación racional al mundo que nos rodea en varios semblantes. Al igual que la realidad está en constante cambio, estas deben irse adaptando al contexto actual, es decir, la realidad impone retos a la teoría. Los autores que han adoptado la Inversión Extranjera como tema de análisis y estudio, tratan de explicar el movimiento de los recursos (capital, tecnología, sistemas, etc.) a través de las fronteras internacionales y, en su mayoría, han concluido que los recursos se trasladan de los países desarrollados a los países con menores grados de desarrollo. En el 2012, una economía emergente: México, en lugar de ser una economía receptora de inversión extranjera directa, se convirtió en una exportadora de inversión directa, contraviniendo así las conclusiones de los estudios sobre los flujos de IED mundiales. Este artículo hace una revisión de algunas teorías de la inversión y del Comercio Internacional en búsqueda de una explicación a este fenómeno