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Flash存储管理的研究与设计 被引量:7
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作者 朱念好 周玉洁 《计算机工程与设计》 CSCD 北大核心 2010年第3期511-513,554,共4页
针对目前存储管理对大容量NAND Flash考虑的不足,在对大容量NAND Flash物理特性深入研究的基础上,实现了连续写与非连续写技术,提高了存储管理的效率。首先研究并实现了特有的状态信息描述方法,完全符合大容量MLC类型NAND Flash的物理特... 针对目前存储管理对大容量NAND Flash考虑的不足,在对大容量NAND Flash物理特性深入研究的基础上,实现了连续写与非连续写技术,提高了存储管理的效率。首先研究并实现了特有的状态信息描述方法,完全符合大容量MLC类型NAND Flash的物理特性,研究并实现了区域映射技术,适用于任何容量的闪存,并实现了连续写与非连续写技术,提高了写大文件的效率。实验结果表明,该方法在文件传输方面最大限度地挖掘了MLC类型NAND Flash的性能。 展开更多
关键词 闪存 存储管理 逻辑写 连续 非连续
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The association of various social capital indicators and physical activity participation among Turkish adolescents
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作者 Günay Y1ld1zer Emre Bilgin +2 位作者 Ezel Nur Korur Dario Novak GIyasettin Demirhan 《Journal of Sport and Health Science》 SCIE 2018年第1期27-33,共7页
Background: Physical activity participation(PAP) has been proven to improve health and promote optimal growth among adolescents. However,most adolescents do not meet the current physical activity(PA) recommendations i... Background: Physical activity participation(PAP) has been proven to improve health and promote optimal growth among adolescents. However,most adolescents do not meet the current physical activity(PA) recommendations in Turkey. The role of the social environment and social factors on PAP is being increasingly recognized. Although social capital(SC) indicators have been examined in high-income countries, there are few studies on developing countries. The aim of this study was to examine the relationship between SC indicators and PAP among Turkish adolescents.Methods: A survey was conducted among 19 high schools in 4 different cities in Turkey in 2016. A total of 506 female and 729 male high school students participated in this study. The dependent variable was overall PAP, which was measured using the short form of the International Physical Activity Questionnaire. The independent variables included self-perceived family, neighborhood, and school SC. Self-rated health and obesity status, measured by body mass index, were other study covariates in multiple binary logistic regression models. Chi-square tests were used to assess the differences between genders.Results: PAP levels were significantly different between males and females. A higher percentage of males reported PAP(77.4%) compared to females(51.0%). Among males, teacher–student interpersonal trust and informal social control were inversely associated with PAP, while high students interpersonal trust was positively associated with increased odds of PAP. For females, students interpersonal trust was inversely associated with PAP.Conclusion: Various SC indicators are associated with PAP for males and females. These associations are different from findings of studies conducted in developed countries. Therefore, health-promotion interventions and policies should consider gender and different social agents on the social and cultural background to improve PAP among Turkish adolescents. 展开更多
关键词 Adolescents Family NEIGHBORHOOD Physical activity Public health SCHOOL Social capital
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