Search results for " America."
showing 10 items of 686 documents
Worldwide trends in body-mass index, underweight, overweight, and obesity from 1975 to 2016: a pooled analysis of 2416 population-based measurement s…
2017
© 2017 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 licenseBackground Underweight, overweight, and obesity in childhood and adolescence are associated with adverse health consequences throughout the life-course. Our aim was to estimate worldwide trends in mean body-mass index (BMI) and a comprehensive set of BMI categories that cover underweight to obesity in children and adolescents, and to compare trends with those of adults. Methods We pooled 2416 population-based studies with measurements of height and weight on 128·9 million participants aged 5 years and older, including 31·5 million aged 5–19 years. We used a Bayesian hierarchical model …
School Satisfaction and School Pressure in the WHO European Region and North America: An Analysis of Time Trends (2002–2018) and Patterns of Co-occur…
2020
Purpose: The purpose of the study was to examine the trends between 2002 and 2018 in school pressure and school satisfaction among 15-year-old students, across countries and by gender, in the WHO European region and North America, and explore whether there are variations between countries and by gender in the co-occurrence of school pressure and school satisfaction. Methods: Data from the 32 countries that participated in the Health Behaviour in School-aged Children study (HBSC) study between 2002 and 2018 were used. Statistical analyses included ttests, binary logistic regression analyses, and chi-square tests, as required by each of the study aims. Results: School satisfaction tended to i…
Secular trends in moderate-to-vigorous physical activity in 32 countries from 2002 to 2010: a cross-national perspective
2015
Background: Sufficient levels of moderate to vigorous physical activity (MVPA) give substantial health benefits to adolescents. This article examines trends in physical activity (PA) from 2002 to 2010 across 32 countries from Europe and North America. Methods: Representative samples included 479 674 pupils (49% boys) aged 11 years ( n = 156 383), 13 years ( n = 163 729) and 15 years ( n = 159 562). The trends in meeting the recommendations for PA (at least 60 min daily) were evaluated using logistic regression. Results: There was a slight overall increase between 2002 and 2010 (17.0% and 18.6%, respectively). MVPA increased significantly ( P ≤ 0.05) among boys in 16 countries. Conversely, n…
The Aesthetics of Healing in the Sacredness of the African American Female’s Bible: Zora Neale Hurston’s Moses, Man of the Mountain
2016
Zora Neale Hurston’s Moses, Man of the Mountain (1939) stands in the tradition of African American use of the biblical musings that aims to relativize and yet uphold a new version of the sacred story under the gaze of a black woman that manipulates and admonishes the characters of the gospel to offer a feminist side of the Bible. The novel discloses Hurston’s mastering of the aesthetics that black folklore infused to the African American cultural experience and her accommodation to bring to the fore the needed voice of black women. Rejecting the role of religion as a reductive mode of social protest, the novel extends its jeremiadic ethos and evolves into a black feminist manifesto in which…
Competitividad Del Sector Manufacturero En Ammrica Latina Tendencias Y Determinants (Competitiveness of the Manufacturing Sector in Latin America Tre…
2014
Spanish Abstract: Tras analizar conjuntamente la evolucion de las exportaciones de los principales paises latinoamericanos en la ultima decada y examinar caso a caso los determinantes del desempeno de cada pais, este estudio concluye que la competitividad del sector manufacturero en la mayoria de los paises de la region ha disminuido a partir de 2007 hasta el 2012, despues de evolucionar de manera relativamente favorable entre el 2002 y el 2007. Este deterioro reciente, que ha sido mas marcado en paises como Brasil y Colombia, esta relacionado con el mantenimiento de un tipo de cambio real apreciado, elevados costes laborales y un insuficiente avance de la productividad de la mano de obra. …
What to avoid to succeed as an entrepreneur
2015
Abstract Entrepreneurship is a driver of economic growth and development. This study highlights the importance of entrepreneurship in emerging countries and examines entrepreneurs' characteristics in these countries. In particular, the study explains what entrepreneurs should avoid to succeed in Latin America. An empirical study analyzes factors that relate to businesses and entrepreneurs in El Salvador, one of the Latin American countries with the lowest rates of business success. In the study, business factors consist of the use of formal and informal advisory services and the degree of innovation. Variables that relate to the entrepreneur are educational attainment and the demographic va…
Using high-potential firms as the key to achieving territorial development
2016
Abstract This study examines which entrepreneurial antecedents like education, gender, motivation, and age; and environmental variables like citizen insecurity enable high-potential firms to establish themselves and act as the key to territorial development. The inclusion of the variable citizen insecurity is unusual, but several authors note how a violent context can affect entrepreneurial activity in Latin America. Insecurity generates massive expenses for entrepreneurs, who must invest to protect themselves against violence and cover the extraordinary expenses arising from this violence. The data analysis technique is fuzzy-set qualitative comparative analysis (fsQCA), a powerful techniq…
Maize based diets and possible neurobehavioural after-effects among some populations in the world
1996
Maize is a cereal particularly lacking in tryptophan, which is the precursor of serotonin, an important neurotransmitter. Altough complementary foods may eliminate tryptophan deficiency, serotonin deficiency may often continue to exist because of competition made by other Large Neutral Amino Acids (LNAA) against tryptophan for neuron access, since they use the same carrier to cross the blood-brain barrier. Thus serotonin synthesis depends on two variables: the amount of tryptophan and the trp/LNAA ratio (R). “R” is lowest for common maize, low for beans and, as a rule, for most vegetable foods, higher for meat. So, when maize is the preponderant food in the meal, the “R” value lowers and so…
Trainee research prizes from the 2019 RSNA scientific assembly and annual meeting
2020
Trainee Research Prizes from the 2019 RSNA Scientific Assembly and Annual Meeting
Volatile contents of mafic-to-intermediate magmas at San Cristóbal volcano in Nicaragua
2017
San Cristóbal volcano in northwest Nicaragua is one of the most active basaltic–andesitic stratovolcanoes of the Central American Volcanic Arc (CAVA). Here we provide novel constraints on the volcano's magmatic plumbing system, by presenting the first direct measurements of major volatile contents in mafic-to-intermediate glass inclusions from Holocene and historic-present volcanic activity. Olivine-hosted (forsterite [Fo] < 80; Fo< 80) glass inclusions from Holocene tephra layers contain moderate amounts of H2O (0.1–3.3 wt%) and S and Cl up to 2500 μg/g, and define the mafic (basaltic) endmember component. Historic-present scoriae and tephra layers exhibit more-evolved olivines (Fo69…