PURPOSE Both humans and software are notoriously challenging to account for in traditional hazard analysis models. The purpose of this work is to investigate and demonstrate the application of a new, extended accident causality model, called systems theoretic accident model and processes (STAMP), to radiation oncology. Specifically, a hazard analysis technique based on STAMP, system-theoretic p...

During the COVID-19 pandemic, organizers of crowd events must facilitate physical distancing in environments where attendees previously enjoyed being close with ingroup members, encourage accurate perception health risks and adherence to safety guidance, stop expected normative behaviors that may now be unsafe. Research from psychology demonstrates how group processes are integral each these is...

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 Unhealthy premarital sex behavior leads to several health problems namely; sexually transmitted diseases (STDs), Human Immune Virus and Acquired Immune Deficiency Syndrome (HIV/AIDS), unwanted pregnancies, abortions and maternal deaths. Unwanted pregnancies and unsafe abortions are rampant in Nepal despite introduction of legal provision for safe abortion since 2003. Lately, unsafe s...

BACKGROUND In India, as in rest of the world, HIV prevention programs have focused on HIV transmission through unsafe injecting practices with less attention on sexual risk behaviors among injecting drug users (IDUs). This study examines the sexual risk taking behaviors of IDUs associated with their pattern of drug use in India. METHODS Data were obtained from the behavioral tracking survey c...