نتایج جستجو برای: sex factors

تعداد نتایج: 1236437  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

Journal: :international journal of occupational and environment medicine 0
j akbari department of occupational health engineering, school of health, isfahan university of medical sciences, isfahan, iran r akbari dalab vocational training center, ilam prisons and security- corrective measures organization, ilam, iran f farasati department of occupational health engineering, school of health, ilam university of medical sciences, ilam, iran b mahaki department of biostatistics, school of health, isfahan university of medical sciences, isfahan, iran

background: exposure to job stress causes deleterious effects on physical and mental health of employees and productivity of organizations. objective: to study work-related stressors among employees of prisons of ilam, western iran. methods: in a cross-sectional study conducted from july to october 2013, 177 employees of ilam prisons and security-corrective measures organization were enrolled i...

2007
Benjamin Munson

Sex differences in vowel acoustics were found to be mediated by words' frequency of use and phonological neighborhood density. Larger sex differences in vowel-space expansion were found for words with high frequency of use and for words with small phonological neighborhoods, than for words than for words with low frequency of use and high neighborhood density. Results suggest that talkers' prod...

Journal: :The Journal of the Acoustical Society of America 2004
Sandra P Whiteside Luisa Henry Rachel Dobbin

Voice onset time (VOT) data for the plosives /p b t d k g/ in two vowel contexts (/i a/) for 5 groups of 46 boys and girls aged 5; 8 (5 years, 8 months) to 13;2 years were investigated to examine patterns of sex differences. Results indicated that there was some evidence of females displaying longer VOT values than the males. In addition, these were found to be most marked for the data of the 1...

2017
Gijsbert Stoet

In the last decade, a number of studies have reported sex differences in selective attention, but a unified explanation for these effects is still missing. This study aims to better understand these differences and put them in an evolutionary psychological context. 418 adult participants performed a computer-based Simon task, in which they responded to the direction of a left or right pointing ...

2011
Michelle F. Gaffey Srinivasan Venkatesh Neeraj Dhingra Ajay Khera Rajesh Kumar Paul Arora Nico Nagelkerke Prabhat Jha

Heterosexual transmission of HIV in India is driven by the male use of female sex workers (FSW), but few studies have examined the factors associated with using FSW. This nationally representative study examined the prevalence and correlates of FSW use among 31,040 men aged 15-49 years in India in 2006. Nationally, about 4% of men used FSW in the previous year, representing about 8.5 million FS...

Journal: :Fel'dsher i akusherka 1980
E V Fedorova

The question in everyone’s mind is that at what age sex information should be given to children. The correct approach is that whenever, like in the case of other information, the child wants to know about some aspect of this subject, tell him only as much as he has asked. For sex education nobody can be a better guide than parents. When parents become guides and friends, a child will not be afr...

Journal: :Journal of gerontology 1985
J Liang K A Bollen

This research examined sex differences in the factorial structure of the Philadelphia Geriatric Center Morale Scale. In particular, we view the covariance structure of the scale items as a function of several parameter matrices. We analyzed the factorial invariance by testing hypotheses involving the equivalence constraints of one or more parameter matrices in the male and female populations. D...

Journal: :Developmental psychology 2006
Gwen A Kenney-Benson Eva M Pomerantz Allison M Ryan Helen Patrick

This research examined whether the tendency for girls to outperform boys in the classroom is due to differences in how girls and boys approach schoolwork. In 5th grade and then again in 7th grade, children (N=518) reported on how they approach schoolwork (i.e., achievement goals and classroom behavior), their learning strategies, and their self-efficacy in math; math grades and achievement test...

Journal: :African journal of reproductive health 2008
Amadu Jacky Kaba

The two important questions that this paper will attempt to answer are: (1) why is it that regardless of race/ethnicity or geographic location, the sex ratio data at birth show more males than females?; and (2) Why is it that regardless of geographic location compared to other racial/ethnic groups, Black women or Women of sub-Saharan Black African descent tend to give birth to more females? Or ...

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