Impact of Channels Aspect Ratio on the Heat Transfer in Finned Heat Sinks with Tip Clearance.

A 3D numerical study is used to analyze the flow topology and performance, in terms of heat transfer efficiency and required pumping power, of heat sink devices with different channel aspect-ratio in the presence of tip-clearance. Seven different channel aspect ratios AR, from 0.25 to 1.

Evaluation of Spanish Health System during the COVID-19 Pandemic: Accountability and Wellbeing Results.

The COVID-19 pandemic poses a challenge for health systems. For this reason, it is essential to evaluate the management of health systems in the face of the pandemic, identifying the factors that may contribute to its failure or success. This management is more difficult in decentralized countries, since in them, health competencies are distributed among different levels of government.

Microcanonical ensemble simulation method applied to discrete potential fluids.

In this work we extend the applicability of the microcanonical ensemble simulation method, originally proposed to study the Ising model [A. Hüller and M. Pleimling, Int.

Changes in pre- to post-immigration HIV risk behaviors among recent Latino immigrants.

This prospective longitudinal study examined pre- to post-immigration HIV risk behavior trajectories among recent Latino immigrants in Miami-Dade County (Florida). We identified socio-demographic factors associated with these trajectories and collected retrospective pre-immigration HIV risk behavior data at baseline from a sample of 527 Caribbean, South American, and Central American Latinos ages 18-34 who immigrated to the U.S.

Condom use preferences among Latinos in Miami-Dade: emerging themes concerning men's and women's culturally-ascribed attitudes and behaviours.

Among Latinos, cultural values such as machismo and marianismo may promote inconsistent condom use representing a significant risk factor for HIV infection. Yet there continues to be a need for additional research to explore the influence these cultural values have on Latino men and women's condom use attitudes and behaviours given increasing HIV rates of HIV infection among Latinos. The purpose of this study was to explore further Latino traditional culturally-ascribed attitudes and behaviour for emerging themes toward condom use among a diverse group of adult Latino men and women living in Miami-Dade County, Florida, USA.

Critical phenomena in the majority voter model on two-dimensional regular lattices.

In this work we studied the critical behavior of the critical point as a function of the number of nearest neighbors on two-dimensional regular lattices. We performed numerical simulations on triangular, hexagonal, and bilayer square lattices. Using standard finite-size scaling theory we found that all cases fall in the two-dimensional Ising model universality class, but that the critical point value for the bilayer lattice does not follow the regular tendency that the Ising model shows.

Pre- to postimmigration alcohol use trajectories among recent Latino immigrants.

The escalation of alcohol use among some Latino immigrant groups as their time in the United States increases has been well documented. Yet, little is known about the alcohol use behaviors of Latino immigrants before immigration. This prospective longitudinal study examines pre- to postimmigration alcohol use trajectories among a cohort of recent Latino immigrants.

Dating, marriage, and parenthood for HIV-positive heterosexual Puerto Rican men: normalizing perspectives on everyday life with HIV.

HIV-positive men are living long and healthier lives while managing HIV as a chronic illness. Although research has extensively documented the experiences of illness of people living with HIV, dating, marriage, and fatherhood among heterosexual Latino men has not been examined. To address this gap, this study used a qualitative study design to examine patterns and strategies for dating, marriage, and parenthood among 24 HIV-positive heterosexual Puerto Rican men living in Boston.

Improving the health status of Caribbean people: recommendations from the Triangulating on Health Equity summit.

In 2011, Morehouse School of Medicine convened a summit in San Juan, Puerto Rico, to discuss issues related to the health status of people and communities in the Caribbean region. The summit provided a forum for transparent dialog among researchers, policymakers, and advocates from the Caribbean region and the United States. The summit's theme-improving the region's health outcomes through the adoption of effective practices linking health promotion and primary care, within the context of social and cultural determinants-called for a comprehensive and integrative model or a triangulation of methodologies to improve health outcomes.

Alcohol use among recent Latino immigrants before and after immigration to the United States.

Background: US-born Latinos have higher rates of alcohol use than Latinos who have immigrated to the United States. However, little is known about the pre-immigration drinking patterns of Latino immigrants or about the changes in their drinking behaviors in the 2 years post-immigration.

Objectives: This article reports findings of a longitudinal study that compared rates of regular, binge, and heavy drinking among a cohort of recent Latino immigrants, ages 18-34, prior to immigration to the United States and in the 2 years post-immigration.

Alcohol misuse among recent Latino immigrants: the protective role of preimmigration familismo.

Familismo in the Latino culture is a value hallmarked by close relations with nuclear and extended family members throughout the life span, with pronounced levels of loyalty, reciprocity, and solidarity. Familismo is posited as health protective against alcohol misuse among Latinos in the United States. This study examines the relative influence of pre- and postimmigration familismo on alcohol use behaviors among recent Latino immigrants while accounting for myriad sociocultural factors (gender, age, documentation status, education, income, marital status, presence of family members in the United States, primary language used in the community, English language proficiency, and time in the United States).

Critical phenomena of the majority voter model in a three-dimensional cubic lattice.

In this work we investigate the critical behavior of the three-dimensional simple-cubic majority voter model. Using numerical simulations and a combination of two different cumulants, we evaluated the critical point with a higher accuracy than the previous numerical result found by Yang, Kim, and Kwak [Phys. Rev.

Nominal thermodynamic temperature in nonequilibrium kinetic Ising models.

We show that a nominal temperature can be consistently and uniquely defined everywhere in the phase diagram of large classes of nonequilibrium kinetic Ising spin models. In addition, we confirm that, at critical points, the large-time "fluctuation-dissipation ratio" X( infinity ) is a universal amplitude ratio, and find in particular X( infinity ) approximately 0.33(1) and X( infinity )=1 / 2 for the magnetization in, respectively, the two-dimensional Ising and voter universality classes.