Forming new secure associations between wireless devices that meet for the first time and do not share a prior trust relationship is an important but challenging problem. We present ProxiMate, a system that allows wireless devices in proximity to securely pair with one another autonomously by generating a common secret key. ProxiMate works by making wireless devices in proximity tap into a surp...

Background The importance of the social determinants of health (SDH) and barriers to the access and utilization of healthcare have been widely recognized but not previously studied in the context of universal healthcare coverage (UHC) in Brazil and other developing countries. Objective To evaluate a set of proposed indicators of SDH and barriers to the access and utilization of healthcare - pro...

Background Action on the social determinants of health (SDH) is relevant for reducing health inequalities. This is particularly the case for South Africa (SA) with its very high level of income inequality and inequalities in health and health outcomes. This paper provides evidence on the key SDH for reducing health inequalities in the country using a framework initially developed by the World H...

Animal species varying in size and musculoskeletal design all support and move their body weight. This implies the existence of evolutionarily conserved feedback between sensors that produce quantitative signals encoding body weight and proximate determinants of musculoskeletal designs. Although studies at the level of whole organisms and tissue morphology and function clearly indicate that mus...

Among the three major components of a closed birth interval, waiting time to conception can somehow be managed with effective contraceptives while gestation is universally constant in its duration; the duration of postpartum amenorrhoea (PPA) varies in complex nature. The present study aimed to investigate the proximate factors influencing the duration of PPA. A community-based, cross-sectional...

This paper uses a micro-approach to examine the motivation and processes of rapid fertility decline in a Kerala village. Fertility declined in the village substantially during the 1970s and continued to decline to reach replacement level at the time of study. The proximate determinants are postponement of marriage and extensive use of contraceptives. However, the changes in these factors were t...

This paper analyzes the family structure experiences of children in the U.S. Childbearing and transitions among single, cohabiting, and married states are analyzed jointly. A novel contribution is to distinguish men by their relationship to children: biological father or stepfather. The analysis uses data from the NLSY79. A key finding is that children of black mothers spend on average only 33%...

A number of literatures suggest that military strength has been losing centrality and importance to nonmilitary factors of national power. In this paper, logistic regressions and data from the Correlates of War COW project are used to investigate whether over the 1820–2000 time horizon, for the great powers and their proximate contenders, the importance of military capabilities to national powe...

Why are some countries so much richer than others? Development Accounting is a first-pass attempt at organizing the answer around two proximate determinants: factors of production and efficiency. It answers the question “how much of the cross-country income variance can be attributed to differences in (physical and human) capital, and how much to differences in the efficiency with which capital...

BACKGROUND Research on interpersonal violence towards women has commonly focused on individual or proximate-level determinants associated with violent acts ignores the roles of larger structural systems that shape interpersonal violence. Though this research has contributed to an understanding of the prevalence and consequences of violence towards women, it ignores how patterns of violence are ...