BACKGROUND Reliable and comparable analysis of risks to health is key for preventing disease and injury. Causal attribution of morbidity and mortality to risk factors has traditionally been in the context of individual risk factors, often in a limited number of settings, restricting comparability. Our aim was to estimate the contributions of selected major risk factors to global and regional bu...

BACKGROUND Teenagers under 18 years old in Vietnam are considered as minors who usually lack the autonomy to make decisions. They are also sometimes viewed as contributors to social evils including crime, violence and substance use. Moreover, most Vietnamese teenagers have unsafe sex before marriage. The objective of this study is to explore the parental perceptions relating to their teenagers'...

A class of software is identified where a nondeterminism analysis is not inherently less safe than a deterministic analysis. Tools built for that class of software can be simple to build, fast to run, and scale to very large problems. An examples of one such tool is discussed here.

BACKGROUND Despite the declining trends of Human immunodeficiency virus (HIV) infection in Sub-Saharan Africa (SSA), unsafe sexual behaviours among adolescents still represent a public health challenge. It is important to understand factors acting at different levels to influence sexual behaviour among adolescents. This study examined the influence of perceived behaviour control, subjective nor...

background: this study aimed to evaluate the workers safety behavior and to determine the importance of each unsafe behavior in an iranian steel manufacturing company. methods: this study was conducted in mobareke steel manufacturing company, which is located in the middle of iran, in 2007. the methodology was based on the safety behavior sampling (sbs) technique and entropy. after specifying t...

Ernest Sosa has argued that if someone knows that p, then his belief that p is “safe,” and Timothy Williamson has agreed. In this paper I argue that safety, as defined by Sosa, is not a necessary condition on knowledge—that we can have unsafe knowledge. In the next section I present Sosa’s definition of safety, and in section III I present a counterexample to it as a necessary condition on know...