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171.
Dale A. Blyth Roberta G. Simmons David F. Zakin 《Journal of youth and adolescence》1985,14(3):207-225
During adolescence dramatic physical changes take place which the individual must incorporate into his or her evolving body image. The impact of different school environments on this incorporation process is explored using data on 225 White females from a longitudinal study. Differences in physical characteristics between early, middle, and late developers were assessed each year. The effects of pubertal timing on satisfaction with body image dimensions and self-esteem were then explored for sixth- and seventh-graders within different school environments. Reference group theory was used to examine three alternative hypotheses. Early versus late onset of menarche had different effects on certain aspects of satisfaction with body image, depending on the school environment. Results support the strength of the cultural ideal of thinness for women, but no other hypothesis had consistent support. The findings indicated the need to consider a multiplicity of factors in relation to specific body image dimensions.This study has been funded by NIMH grant R01 MH-30739 and a grant from the William T. Grant Foundation. In addition, the work of the second author has been supported by a Research Development Award from the National Institute of Mental Health, #2 K02 MH-41688.Received his Ph.D. from the University of Minnesota. Current research interests include stress and coping in adolescence, the role of social relationships in problem behavior, and the effects of different school contexts.Received her Ph.D. from Columbia University. Research interests include the social and psychological effects of puberty and sex differences in adolescence.Received M. A. in clinical child psychology from Ohio State University. Main interests are developmental aspects of body-image and research on personality disorders. 相似文献
172.
Injuries of the Head from Backface Deformation of Ballistic Protective Helmets Under Ballistic Impact
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Karin A. Rafaels Ph.D. Hattie C. Cutcliffe B.S.E. Robert S. Salzar Ph.D. Martin Davis M.S. Brian Boggess M.S. Bryan Bush M.D. Robert Harris M.D. Mark Steve Rountree Ellory Sanderson B.S. Steven Campman M.D. Spencer Koch M.D. Cameron R. ‘Dale’ Bass Ph.D. 《Journal of forensic sciences》2015,60(1):219-225
Modern ballistic helmets defeat penetrating bullets by energy transfer from the projectile to the helmet, producing helmet deformation. This deformation may cause severe injuries without completely perforating the helmet, termed “behind armor blunt trauma” (BABT). As helmets become lighter, the likelihood of larger helmet backface deformation under ballistic impact increases. To characterize the potential for BABT, seven postmortem human head/neck specimens wearing a ballistic protective helmet were exposed to nonperforating impact, using a 9 mm, full metal jacket, 124 grain bullet with velocities of 400–460 m/s. An increasing trend of injury severity was observed, ranging from simple linear fractures to combinations of linear and depressed fractures. Overall, the ability to identify skull fractures resulting from BABT can be used in forensic investigations. Our results demonstrate a high risk of skull fracture due to BABT and necessitate the prevention of BABT as a design factor in future generations of protective gear. 相似文献
173.
Elaine Dewhurst 《The Modern law review》2015,78(2):189-215
This article assesses the effectiveness of United Kingdom age discrimination law in protecting older workers from claims that they are less productive and perform more poorly than younger workers. The article assesses employer perceptions and the incompatibility of such perceptions with existing research and the current interpretation of age discrimination law by the CJEU and the Supreme Court which accords with such research. The effectiveness of age discrimination law in practice is assessed through an analysis of existing compensation reduction rules. The article concludes that the existing rules which allow for a reduction in compensation payable where there is a chance that the same outcome would have been reached in the absence of discrimination (the ‘chance model’) reduces the effectiveness of the existing protections. A move to a ‘certainty model’ would be less speculative, would serve the objectives of anti‐discrimination law and would reduce concerns about compatibility with EU law. 相似文献
174.
175.
Véronneau Marie-Hélène Serbin Lisa A. Kennedy-Turner Kathleen Stack Dale M. Ledingham Jane E. Schwartzman Alex E. 《Journal of youth and adolescence》2022,51(7):1317-1332
Journal of Youth and Adolescence - Governments around the world are pressed to invest in postsecondary education. However, little research exists to document whether large-scale educational reforms... 相似文献