Promoting physical activity using a wearable activity tracker in college students: A cluster randomized controlled trial

This study examined the effects of utilizing a wearable activity tracker in a credit-based physical activity instructional program (PAIP) for promoting physical activity (PA) in college students. Fourteen PAIP courses in a large public university were randomly assigned into intervention (k = 7; n = 101) and control (k = 7; n = 86) groups. All courses focused on a core curriculum that covers basic exercise and behavioral science contents through lectures and activity sessions. A Misfit Flash activity tracker was provided to students in the intervention group. Objective PA assessments occurred at baseline, mid-, and end-of-semester during a 15-week academic semester. The control group showed a significant reduction in moderate- and vigorous-intensity PA (MVPA) minutes from baseline to the end-of-semester (P <.05), whereas the intervention group showed no changes in MVPA minutes over time. However, the intervention group also showed increased sedentary time and decreased time spent in light-intensity PA during the intervention period. Taken together, the present study found null effects of utilizing the wearable activity tracker in promoting PA in college students suggesting that intervention of primary using the wearable activity tracker as a behavior change strategy may not be effective to increase in PA in this setting.     

Do corporate management tools inevitably corrupt the soul of the university? Evidence from the implementation of responsibility center budgeting

The use of corporate management tools in universities has been widely critiqued in recent decades, as it is viewed as undermining academic goals and promoting marketization and corporatization. Responsibility center budgeting (RCB) is one popular management tool that has been decried as promoting market logics, internal competition and institutional fragmentation. This comparative case study investigated four North American universities that employed RCB for several years, to investigate the relationship between unit autonomy and coordination. Site visits and interviews with key informants were conducted at the four universities, supplemented by document analysis. The analysis identifies widely different experiences between two sets of universities. Findings show that the ability of the central administration to promote vertical coordination is critical to mitigating the adverse consequences of RCB.     

绿色技术创新视域下中国生态福利绩效的时空演变及影响因素——基于省域尺度的数据检验

运用SBM-DEA超效率模型、Getis-Ord Gi*指数、面板Tobit回归模型,在绿色技术创新视域下分析2004—2016年除西藏、香港、澳门和台湾的中国30个省(市、自治区)的生态福利绩效水平、空间分类特征和冷热点区域格局演化及影响因素。     

icl7135的串行采集方式在蓄电池电压监测系统中的应用

文章介绍了双积分型a/d转换器icl7135的串行数据采集方式在蓄电池电压监测系统中的应用,给出了icl7135与mcs-51单片机串行接口实现电压监测硬件和软件设计方法.     

谢赫“六法”的历史演变

南齐谢赫首次提出了六法论,成为中国美术史上影响最深远的美学理论之一,但六法并非是万古不移的。随着时代的发展和绘画艺术的发展、演变,其具体含义也发生了量或质的变化,六法间的相互关系也相应发生了显著的变化。中国画的发展、演变和成熟的过程,也就是六法的发展、演变和成熟的过程,二者是同步进行的。     

从全球气候变化到低碳城市发展模式

全球气候以变暖为主要特征的变化已成为人类共同面临的严峻挑战,是全球实现可持续发展目标的主要障碍之一。人类社会通过能源消耗排放的大量温室气体是造成全球气候变暖的主要原因,而城市是温室气体排放的主要源头。通过碳减排构建低碳经济和低碳城市发展模式使可持续发展理论从概念走向行动。目前我国低碳经济与低碳城市的理论和实践尚处在起步阶段,在东部发达地区正规划建设若干低碳生态城,已经成为城市规划和建设界讨论的热点,可以预计必将对城市规划的理念和方法产生重大影响。本文试通过对低碳经济和低碳城市发展进行系统疏理和解读,力图把握城市和城市规划的发展方向,找准西部欠发达地区城市规划理念和方法的定位。     

东汉至三国赋风转变中蔡邕赋的过渡特征

汉魏交替期间,作为当时文学主要形式的赋之风格特征的转变是文学史上的一个重要现象,蔡邕赋作是这个转变中具有典型代表性的关节点。全面、深入分析蔡邕赋作承上启下的过渡特征有助于人们对汉魏赋风、乃至整个汉魏文风转变的正确、深刻的理解和把握。     

美元与人民币汇率变动对进出口贸易的影响研究

在美元与人民币汇率以直接标价的情况下,要想避免因汇率变动所造成的经济损失有三条决策方案可供选择。第一条方案就是使出口贸易额与进口贸易额完全相等,将贸易损失用贸易盈利进行弥补,起到平衡作用;第二条方案就是当汇率不断攀升时,势必多增加出口贸易,减少进口贸易,即美元与人民币汇率每增加一个百分点,中国就多出口一个百分点的贸易额,以期达到抑制作用;第三条方案就是当汇率不断下跃时,势必减少出口贸易额,多增加进口贸易额,即美元与人民币汇率每下跌一个百分点时,中国就少进口一个百分点的贸易额,以期达到抑制作用     

电视新闻实践变迁研究的场域理论框架探析

论文认为,以场域理论为框架,对上世纪90年代以来中国电视新闻实践的变化与影响进行研究,有助于打破目前研究中普遍存在的宏观-微观割裂弊端,形成相互印证、质询的认知版图。     

洛阳地区魏晋墓中随葬品变化研究

洛阳地区魏晋墓中的随葬品,曹魏至西晋早期,其种类、风格多继承东汉末期的特点,如保留了大量的动物俑;西晋中期以后,种类增多,开始出现武士俑,风格上吸收了周边文化的影响;西晋晚期,随葬品制作粗糙,种类减少。而透过随葬品的变化,有助于我们更全面了解当时社会在政治、经济、文化等方面的状况。