The Toll of the Great Recession: Childhood Poverty Among Hispanics Sets Record, Leads Nation

Compares the number and rates of children 17 and younger living in poverty in 2007 and 2010 by race/ethnicity. Analyzes child poverty rates among Latinos/Hispanics by age, region, family structure, and parents' nativity, education, and employment status

Living Together: The Economics of Cohabitation

Analyzes trends among unmarried couples ages 30 to 44 living together by education. Compares median household income, poverty rate, composition of household income, and number of children with those of married couples and those without partners

A Demographic Portrait of Hispanics in Puerto Rico

Outlines Puerto Rican population trends from 1970 to 2010. Compares demographic, income, and economic characteristics of Latinos/Hispanics in Puerto Rico with those of Latinos of Puerto Rican descent in the fifty states and D.C. as well as all Latinos

Age effects in second language learning: stepping stones toward better understanding

"As should be apparent by now, the position taken in this book is that second language teaching should focus on encouraging acquisition, on providing input that stimulates the subconscious language acquisition potential all normal human beings have. This does not mean to say, however, that there is no room at all for conscious learning. Conscious learning does have a role, but it is no longer the lead actor in the play." (Krashen and Terrell, 1981). In his article, the author DeKeyser (2013), points out the relevance attained to the Second Language Learning, with controversial issues such as conceptual misunderstanding and methodological difficulties. On the other hand, the author seeks that the debate between each other is be able to agree on them, through the suggestions for improvement in subject selection, data collection, and instrumentation to understand how crucial is the age effects for educational policy and curriculum design; and how different are the foreign language learning from second language learning environments

Growth opportunities and the effect of corporate diversification on value

This paper provides empirical evidence of how a firm’s growth opportunities shape the diversification–value relationship on a sample of U.S. companies between 1998 and 2010. Our findings suggest that the negative relationship between diversification and a firm’s value may reverse at high levels of diversification, and that such a U-form diversification–value relation is partly mediated by a firm’s growth opportunities. Results are robust to various model specifications and after controlling for endogenous self-selection of the diversification decision

Enhanced electrical conductivity in graphene-filled polycarbonate nanocomposites by microcellular foaming with sc-CO2

“This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Adhesion Science and Technology 01/2016, available online: http://www.tandfonline.com/10.1080/01694243.2015.1137700"Electrically conductive polycarbonate (PC) foams containing a low concentration of graphene nanoplatelets (0.5 wt.%) were produced with variable range of expansion ratio by applying a high-pressure batch foaming process using sc-CO2. The structure of the foams was assessed by means of SEM, AFM and WAXS, and the electrical conductivity was measured in the foam growing direction. Results showed that electrical conductivity of PC composite foams remarkably increased when compared to that of non-foamed PC composite, with both the electrical conductivity and the main cell size of the foams being directly affected by the resultant expansion ratio of the foam. This interesting result could be explained by the development of an interconnected graphene nanoparticle network composed by increasingly well-dispersed and reoriented graphene nanoplatelets, which was developed into the solid fraction of the foam upon foaming by sudden depressurising of the plasticised CO2-saturated PC preform. Some evidences of morphological changes in the graphene nanoplatelets after foaming were obtained by analysing variations in graphene’s (0 0 2) diffraction plane, whose intensity decreased with foaming. A reduction of the average number of layers in the graphene nanoplatelets was also measured, both evidences indicating that improved dispersion of graphene nanoparticles existed in the PC composite foams. As a result, foams with a proper combination of low density and enhanced electrical conductivity could be produced, enabling them to be used in applications such as electromagnetic interference shielding.Peer ReviewedPostprint (author's final draft

Redistribución de áreas, análisis de riesgos mecánicos e implementación de señalética en los talleres de mantenimiento mecánico del H. Gobierno Provincial de Tungurahua.

La ejecución de la redistribución de áreas, análisis de riesgos mecánicos e implementación de señalética de los talleres de mantenimiento mecánico del H. Gobierno provincial de Tungurahua, ubicados en el cantón Ambato, quienes se dedican al mantenimiento de: equipo caminero; vehículos pesados, vehículos livianos y reparaciones metalmecánicas, tiene el propósito de mejorar el desempeño y la seguridad de los trabajadores, para lo cual se identificaran los riesgos mecánicos con los métodos existentes, se realizara la redistribución de las áreas y la implementación de la señalética, así se mejorara la eficiencia de los trabajos y se garantizara la seguridad del talento humano, máquinas y equipos. Como herramienta se utilizan diagramas de procesos para analizar las diferentes actividades que ejecutan donde se determinó las distancias y tiempos que conlleva efectuar un mantenimiento especifico con la actual distribución de áreas, se identificó los riesgos mecánicos mediante el método simplificado español del INSHT y control de riesgos por talleres de trabajo, posterior la implementación de la señalética con el fin de mitigar los riesgos mecánicos a los que los trabajadores están expuestos. Se concluye que con la ejecución de la redistribución de áreas, análisis de los riesgos mecánicos e implementación de la señalización en los talleres de mantenimiento mecánico del H. Gobierno Provincial de Tungurahua, se logra que los trabajadores mejoren el desempeño en el trabajo, visualicen los lugares o zonas de riesgo y que las condiciones de trabajo sean seguras. Se recomienda que se implemente la metodología de las 5S para que desde la perspectiva de esta, la seguridad y salud de los trabajadores mejore considerablemente.The present investigation was carried out for execution of redistribution áreas, analysis mechanical risks and implementation of signage about maintenance workshops at Honorable Government from Tungurahua, in Ambato city. Who are dedicated to the maintenance such as: Heavy and light vehicles, and metalworking repairs, is intended to improve mechanics with existing methods, redistribution areas and implementation of signage will improve work efficiency and ensure safety of human talent, machinery and equipment. As a tool, process diagrams will be used to analyze the different activities that are carried out where distances and times involved in carrying out a specific maintenance with current area distribution were determined. Mechanical hazards were identified using simplified Spanish method of INSHT Segurity and Hygiene at Work) and control risks by workshops, later implementation of signage in order to mitigate the mechanical risks to which workers are exposed. It is concluded that with the execution of redistribution áreas, analysis mecanical risks and implementation signaling at workshops mechanical maintenance, will be achieved that workkers improve the perfomance at work, visualize places or zones of risks and that working conditions are safe. It is recommended that methodology of 5S be implemented so that, from perspective of this, health and safety of workers improves considerably

Patologías asociadas en el neonato nacido por cesárea en el periodo de octubre a diciembre del 2009 en el Hospital Metropolitano de la ciudad de Quito.

Debido al alto porcentaje de cesáreas que se practican actualmente y a que la tendencia actual son los nacimientos mediante cesárea, el presente trabajo tuvo como objetivo identificar a la cesárea electiva como factor de riesgo inmediato para el desarrollo de alguna patología en el recién nacido; este trabajo se realizó en Ecuador en el Hospital Metropolitano de la ciudad de Quito en el 2011. MÉTODOS: La población se determinó por los 195 casos tomados de las historias clínicas de los recién nacidos entre Octubre a Diciembre del 2009. Es un estudio Descriptivo-Retrospectivo. RESULTADOS Y CONCLUSIONES: Se encontró que los recién nacidos por cesárea electiva tienen más probabilidad de desarrollar alteraciones en el sistema respiratorio, pese a que no se encontró asociación estadísticamente significativa para vincular a la cesárea electivo como factor de riesgo para esto, además se encontró que el porcentaje de cesáreas realizadas en la institución en la que se realizó el estudio sobrepasa marcadamente el porcentaje establecido como límite superior para pautas admisibles para nacimientos por cesárea establecidos por la UNICEF/OMS/FNUAP, y adicionalmente se encontró asociación estadísticamente significativa entre complicaciones durante la gestación y tipo de parto