objective: to estimate the size of groups at high risk of hiv, network scale up (nsu), an indirect method, was used. methods: 500 kermanian male aged 18 to 45 were recruited. 8 groups at high risk of hiv were defined: users of opium, unknown drug, ecstasy, and alcohol; intra‑venous drug users (idus; males who have extra‑marital sex with females (msf); male who have sex with female sex workers (...

We examine time allocation decisions in same-sex and different-sex couples from a Beckerian comparative advantage perspective. In particular, we estimate the relationship between spent on either market or household activities dummy for being highest earner couple samples of couples. Using American Time Use Survey (ATUS), find that specialize not as much argue these specialization differences ar...

background: sex education is one of the challenging areas of educational systems that has always been accompanied by many problems due to some obstacles and constraints. this has led to occurrence of many behavioral problems and deviations. the aim of this study was to determine the sex education gaps in university curriculum from the students' perspective. methods: this was a descriptive-...