نتایج جستجو برای: risky materials

تعداد نتایج: 450967  

Journal: :SIAM J. Control and Optimization 2016
Jean-Pierre Fouque Chi Seng Pun Hoi Ying Wong

In a continuous-time economy, we investigate the asset allocation problem among a risk-free asset and two risky assets with an ambiguous correlation between the two risky assets. The portfolio selection that is robust to the uncertain correlation is formulated as the utility maximization problem over the worst-case scenario with respect to the possible choice of correlation. Thus, it becomes a ...

Journal: :Sultan Qaboos University medical journal 2015
Nazar P Shabila Kamaran H Ismail Abubakir M Saleh Tariq S Al-Hadithi

OBJECTIVES This study aimed to assess risky driving behaviours among medical students in Erbil, Iraq, and to explore the relationship between risky driving behaviours and perceptions of risky driving. METHODS This self-administered questionnaire-based survey was conducted from January to May 2014 among a random sample of 400 medical students at Hawler Medical University in Erbil. The question...

Journal: :Child abuse & neglect 2010
Terri L Messman-Moore Kate L Walsh David DiLillo

OBJECTIVE The current study examined emotion dysregulation as a mechanism underlying risky sexual behavior and sexual revictimization among adult victims of child sexual abuse (CSA) and child physical abuse (CPA). METHODS Participants were 752 college women. Victimization history, emotion dysregulation, and risky sexual behavior were assessed with anonymous, self-report surveys utilizing a cr...

ژورنال: رویش روانشناسی 2018

The aim:  of this study is to compare the early maladaptive schemas, emotional intelligence and social adjustment of adolescents with high-risk behaviors and normal adolescents.  Methods: This non-experimental study designs of correlation. The sample consisted of 380 adolescents (190 boys have a tendency to risky behaviors and normal, 190 girls have a tendency to risky behaviors and N...

Journal: :Accident; analysis and prevention 2014
Bridie Scott-Parker Barry Watson Mark J King Melissa K Hyde

PURPOSE While there is research indicating that many factors influence the young novice driver's increased risk of road crash injury during the earliest stages of their independent driving, there is a need to further understand the relationship between the perceived risky driving behaviour of parents and friends and the risky behaviour of drivers with a Provisional (intermediate) licence. MET...

2013
Shahrzad Bazargan-Hejazi Fereshteh Zamani-Alavijeh David Hindman Esa Mohamadi Mohsen Bazargan

BACKGROUND Road traffic injuries, especially those involving motorcycles, are a particular concern in Iran. We aimed to identify the specific cognitive dissonances and consonances associated with risky riding among Iranian motorcyclists. METHODS This was a grounded theory qualitative study of male motorcyclists who were ≥ 18 and were living in one of the three cities of Tehran, Isfahan and Ah...

2014
Audrey Wittrup

Using data from the Michigan Study of Adolescent Life Transitions (N=744), this study examines the connection between academic self-concept, academic achievement and risky sexual behavior in college-aged females over time. The current study investigated three hypotheses: 1) academic achievement at Time 1 will be negatively related to risky sexual behavior Time 2, 2) academic self-concept at Tim...

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