Application of network meta-analysis in the field of physical activity and health promotion

Continued advancement in the field of physical activity and health promotion relies heavily on the synthesis of rigorous scientific evidence. As such, systematic reviews and meta-analyses of randomized controlled trials have led to a better understanding of which intervention strategies are superior (i.e., produce the greatest effects) in physical activity-based health behavior change interventions. Indeed, standard meta-analytic approaches have allowed researchers in the field to synthesize relevant experimental evidence using pairwise procedures that produce reliable estimates of the homogeneity, magnitude, and potential biases in the observed effects. However, pairwise meta-analytic procedures are only capable to discerning differences in effects between a select intervention strategy and a select comparison or control condition. In order to maximize the impact of physical activity interventions on health-related outcomes, it is necessary to establish evidence concerning the comparative efficacy of all relevant physical activity intervention strategies. The development of network meta-analysis (NMA)—most commonly used in medical-based clinical trials—has allowed for the quantification of indirect comparisons, even in the absence of direct, head-to-head trials. Thus, it stands to reason that NMA can be applied in physical activity and health promotion research to identify the best intervention strategies. Given that this analysis technique is novel and largely unexplored in the field of physical activity and health promotion, care must be taken in its application to ensure reliable estimates and discernment of the effect sizes among interventions. Therefore, the purpose of this review is to comment on the potential application and importance of NMA in the field of physical activity and health promotion, describe how to properly and effectively apply this technique, and suggest important considerations for its appropriate application in this field. In this paper, overviews of the foundations of NMA and commonly used approaches for conducting NMA are provided, followed by assumptions related to NMA, opportunities and challenges in NMA, and a step-by-step example of developing and conducting an NMA.     

主客观信息融合的港口综合能源系统评价指标体系

为建立绿色港口,实现港口的节能环保,对港口综合能源系统(port integrated energy system,PIES)的评价方法进行研究,提出一种主客观信息融合的PIES评价指标体系,将主观评价与数理统计模型进行结合,兼顾评价过程中的主客观因素,并采用基于马氏距离的统计检验方法对评分矩阵进行修正,实现对PIES的全面评价。通过青岛港董家口港区的调研数据,验证该方法的有效性。     

基于无人机激光点云的树障检测与砍伐树木数量估算

电力走廊的树木生长会对输电线路的安全运营造成巨大影响,精确检测出影响线路安全的树木并将其砍伐至关重要。因此,提出一种基于无人机激光点云的树障检测与砍伐树木数量估算方法。首先,对激光点云进行快速自动化处理,先后精确提取地面点、电力线点与植被点;其次,基于电力线点进行分段,并分析电力线与植被点的安全距离,进而确定树障区域的位置和范围;最后,对树障区域植被点云进行单木分割,并统计单木数量,最终实现砍伐树木数量的精准估算。研究结果表明,无人机激光点云可以实现输电通道树障的有效检测与砍伐树木数量的精确估算,总体树木砍伐数量估算精度可达92.3%,可为输电线路安全运营提供遥感技术支撑,也可为电网运维单位制订树木砍伐计划提供可靠依据。     

从涌泉寺古籍被淹看当前古籍保护工作的紧迫性

2005年涌泉寺在抢救受灾经书时采取了夹宣纸去湿、酒精去霉变、空气除湿等科学有效的抢救措施,避免了破坏性抢救的发生.涌泉寺经书普遍存在霉变、破损、虫蛀、裂口等问题,应采取建立恒温恒湿藏经库、去霉杀菌修复、制作夹板、限制开放藏经殿等措施加以保护;针对目前全国古籍保存保护现状,应制订防灾应急预案、加强古籍保护意识、发挥政府职能和社会力量.     

Asia Arts Festival Concluded with Success An interview with Chinese Cultural Minister Cai Wu on the llth Asia Arts Festival

From August 18 to 26, 2009, the 1 lth Asia Arts Festival was successfully held in Ordos, Inner Mongolia,     

Cross-cultural influence on communication effectiveness and user interface design

The objective of this study was to investigate the impact of cultural diversity on communication effectiveness with different communication styles and to apply the results in the field of user interface design for computer-based communication systems. The scope of this study was limited to the relationship between context and verbal/nonverbal communication, and also the relationship between power distance and communication interaction. The results indicated that high context people (HCP) had better communication effectiveness in comprehending nonverbal clues than low context people (LCP), while LCP had better communication effectiveness in verbal communication than their counterparts. It was also found that high power distance people (HPDP) could not communicate as effectively as low power distance people (LPDP) during communication with interaction, but there was no significant difference between HPDP and LPDP in dealing with communication without interaction.     

十里红妆舞翩跹

哗啦啦的小桥流水弥漫着浓郁的江南风,一扇挂着古老铜锁的大门在悠远的音乐声中缓缓开启。在强烈的聚光灯照射下,一排又一排相继呈现的红妆家具,各式各样的箱笼、红桶及其他红妆之物辉煌耀眼,一一闪亮登场。其中最醒目的,要数那张美轮美奂的千工床了,只见它慢慢前移、到舞台最前端,坐在床上的越儿正等待着远方的阿甬归来…一。     

马克思主义生产力理论的科学性及其在当代中国的创造性发展

以唯物史观和唯物主义辩证法两大锐利思想武器作为马克思主义生产力理论方法论基础的确立,是马克思主义生产力理论成为科学的理论以及与西方经济学理论相区别的最本质的特征;马克思主义生产力理论方法论基础、所揭示的基本原理(生产力发展规律)与其科学的分析框架之间的内在逻辑一致性,是马克思主义生产力理论科学性的本质体现;邓小平关于“科学技术是第一生产力”的思想,是马克思主义生产力理论在当代中国的创造性发展。     

认证机构服务质量对关系质量影响实证研究

摘要：本文在认证行业领域,研究了认证机构服务质量对关系质量的影响。在认证机构服务质量4维度结构（即过程服务能力、过程交互质量、潜在服务能力和结果质量）及关系质量3维度结构（即合作性、适应性和关系氛围）的基础上,构建了认证机构服务质量对关系质量的影响模型。对721家企业的实证研究表明,过程服务能力、结果质量两个维度对认证机构和顾客之间的关系质量有显著影响,而过程交互质量、潜在服务能力两个维度对两者关系质量的影响不显著。最后对认证机构如何提高其服务质量,维持良好的顾客关系提出了建议。         

蒋国基:水乡梦,一支笛

正"回想起曾经的一路,竹笛是我全部的梦,这个梦因我的真心喜爱和坚持而成真。如今唯一的念想,就是把自己的笛声,再应着这从未改变的水乡味道带给更多的人。"这是中国民族管弦乐学会常务理事、浙江省民族管弦乐学会会长、著名笛子演奏家蒋国基把新出版的专辑送给笔者时说的一番话。蒋国基常喜欢用"生命不息,笛声不止"勉励自己。他的专辑名为《水乡梦,一支笛》