The growth rate for infants and young children manifests the significant differences between age, sex, regional, and seasonal distributions. The growth rate for infants and young children is a complex process that depends on interaction of the genetic and environmental factors. All genetic and environmental factors jointly contribute to the growth rate for infants and young children, for exampl...

population in all countries plays a fundamental role in economic growth and economic development. but besides absolute size and growth rate of population, the more important factor will be “age structure” or “age distribution” of population, because it can be as source of many economical, social, and political challenges. in this research, we investigate effect of changes in population shares i...

The purpose of this study was to examine the adequacy of "multi-age" classification systems in youth sports with a specific focus on the unisex multi-age-groupings used by USA Swimming. In addition, we offer an analytical rationale for the multi-age-groupings and potential alternatives. We examined the top 100 US swim performances for three years (2005, 2006, and 2007) for girls and boys in 15 ...

Gender gaps in income and social position are widespread. For example, Marianne Bertrand and Kevin Hallock (2001) studied data on the five highest-paid executives of a large group of U.S. firms over the period 1992–1997. They found that only 2.5 percent of the executives in the sample were women. Such asymmetry has engendered heated controversy about the fairness of the selection process, and m...

Background and Objective: The lack of breast cancer screening in young women leads to late disease diagnosis and worse outcomes in this age group. This study was designed to evaluate clinicopathological features and long-term outcomes of young breast cancer women in south of Iran. Materials and Methods: This is a retrospective study of breast cancer patients who were pathologically diagnosed d...

An overview of our current understanding of the formation and evolution of star clusters is given, with the main emphasis on high-mass clusters. Clusters form deeply embedded within dense clouds of molecular gas. Left-over gas is cleared within a few million years and, depending on the efficiency of star formation, the clusters may disperse almost immediately or remain gravitationally bound. Cu...

PURPOSE Gender-based violence (GBV) is a global health and human rights issue with individual and social determinants. Youth are considered high risk; national influences include norms, policies and practices. By age, nation, and region, we contrast key GBV indicators, specifically intimate partner violence (IPV) and forced sexual debut among adolescent and young adult women using Demographic a...

There is currently little understanding on whether retrieval of proper names differs in midlife compared to young adulthood and if so, whether the age differences in this ability are associated with differences in structural integrity of the cerebral cortex. To answer these questions, we studied retrieval of proper names in 115 cognitively healthy middle-aged persons (49.7, ±3.2), comparing the...