Steps counts among middle school students vary with aerobic fitness level

The purpose of this study was to examine if steps/day taken by middle school students varied based on aerobic fitness classification. Middle school students (N = 223; 112 girls, 111 boys) were assigned to three aerobic fitness categories (HIGH, MOD, LOW) based on results of the FlTNESSGRAM PACER test. Four weekdays of pedometer monitoring determined activity levels (steps/day). Boys accumulated significantly more steps/day than girls, 11,589 +/- 3,270 and 10,232 +/- 2,517 steps/day, respectively; F(1,219) = 16.0, p < .001, eta2 = .055. There were no differences in steps/day between grades. HIGH fit participants accumulated significantly more steps/day, F(2, 217) = 12.2, p < .101, eta2 = .101, than moderately fit and low fit participants (approximately 1,491 and ; 2,867 steps/day, respectively). Middle school students who participated in sports in addition to physical education (PE) accumulated significantly more steps/day (approximately 980 steps/day) than those participating in PE only, F(1, 219) = 10.0, p < .01, eta2 = .044. Although the relationship between physical activity and aerobic fitness was moderate (0.35; p < .01), these data demonstrated significant differences in accumulated steps/day among youth of varying aerobic fitness levels. Whether improved fitness levels were the result of additional activity or the cause of it remains to be determined. Regardless, the fittest middle school students were also the most active and accumulated a significant amount of steps/day through organized extracurricular physical activities.     

CERN document server: Document management system for grey literature in a networked environment

Conclusion In this paper we briefly described the current status of research in the field of digital libraries interoperability, mainly with respect to federated data processing such as permitted within the Open Archive Initiative framework. We then presented the CERN Document Server Software suite that is a free software package main-tained by CERN providing an online digital library solution for mid- to large-sized document repositories. The set of CDSware modules was described and the differ-ences with other existing tools briefly mentioned. Finally we have mentioned a typical usage statistics illustrating the scope of grey literature and networked con-ditions of the CERN Document Server. We pointed out that the current trend in grey literature management goes toward institutional repositories build upon the distributed and federated model. Further research is going on within the CDS collaboration in this area, focused particularly on (i) semantic interoperability using ontologies in distributed and federated data processing and (ii) ranking technologies when searching grey literature in OAI compliant repositories.     

宣传画《毛主席万岁!》创作追忆

1959年,我正在市委党校为上海市历史纪念馆(筹)创作历史画<中国共产党第七次党代表大会>.上海人民美术出版社来了一位编辑向我组稿,要我为建国十周年大庆创作一幅重点作品,我欣然接受.     

彭家珍舍命炸良弼

彭家珍舍命炸良弼京城茶座轰……,一声巨响,打破了老北京城饱含凄凉的静寂,对于久惯于沉寂的人们来说,无异于突响的炸雷。刹那间,街面上一阵混乱,只见光明殿胡同里奔出一行人,抬着一个鲜血淋淋的人向医院匆匆而去,还有几个吹着警笛的巡警向这里跑来……这天是公元...     

船舶运动数据在字符与数值混合通信中的简易压缩方法

通过对船舶运动数据的分析,提出了在具体应用条件下一种船舶运动数据的简易压缩方法。     

试析毛泽东的教学思想

教育是立国之本，强国之路，面对当代科技革命的挑战，党和国家了适时的回应，和出全面推进素质教育的决定。在如何实施素质教育工作中，毛泽东同志关于“教学民主”、“知行统一”、“少而精”、“启发式”等一系列教学思想给我们提供了一定的思路和启迪。