Many complicate system behaviors, such as multiple limit cycles and chaos, are produced by a switching signal in systems [1 14].
Switching among systems may produce many complicated nonlinear system behaviors, such as multiple limit cycles and chaos [4, 8].
Transactional sex is associated with HIV risk behaviors such as multiple concurrent sexual partners and sexual coercion among young people in Uganda.
Transactional sex is associated with sexual coercion and HIV risk behaviors such as multiple concurrent sexual partnerships among young people in Uganda.
Numerous studies in heterosexual relationships [ 14- 19] found an association between IPV and high rates of risk behaviors (such as multiple sex partners, non-use or inconsistent use of condoms and sexual coercion) and sexually transmitted infections (STIs) such as HIV.
The major factors associated with HIV transmission include the presence of other sexually transmitted infections (STIs), and sexual risk behaviors, such as multiple sexual partnerships, commercial sex, and the non-use of condoms.
This is against a background of other risk taking behaviors such as multiple partners (50.6%), smoking tobacco (53.8%), use of recreational drugs (16.6%), and alcohol consumption (87.5%) all identified in this study.
Therefore, men who have sex with men (MSM) have become "the potential group" at greater risk of HIV/AIDS transmission because of risk behaviors such as multiple partners and unsafe anal intercourse in China.
MSM are at high risk of becoming infected with HIV due to their sexual behaviors such as multiple sexual partners and unprotected anal intercourse (UAI, i.e., inconsistent condom use) [ 3].
A high level of parental monitoring is associated with more consistent condom use among male students in Dar es Salaam, Tanzania -- many of whom have engaged in high-risk sexual behaviors such as multiple sexual partnerships, concurrent sexual partnerships, and unprotected sexual intercourse in the past one year.
