Not All Perceptual Gaps Were Created Equal: Explicating the Third-Person Perception (TPP) as a Cognitive Fallacy     

Lijiang Shen  Ye Sun  Zhongdang Pan 《Mass Communication and Society》2018,21(4):399-424

Explicating the third-person perception (TPP) as a cognitive fallacy in the process of comparative social judgment of media effects, we propose that not all self–other perceptual gaps in media effects should be considered as TPP. When there is reasonably valid and accurate information regarding self vis-à-vis others on media consumption and vulnerability to media influence, the associated self–other gaps in media effects are not exaggerations, hence, not TPP. TPP results from cognitive biases in information retrieval and application in the process of comparative social judgments. Such biases are in the forms of self-other information differential, assimilation, contrast, and anchoring effects. Caveats in interpretation of extant evidence and implications for future TPP research are discussed.  相似文献   

Lognormal distribution of citation counts is the reason for the relation between Impact Factors and Citation Success Index     

Zhesi Shen  Liying Yang  Jinshan Wu 《Journal of Informetrics》2018,12(1):153-157

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The more multidisciplinary the better? – The prevalence and interdisciplinarity of research collaborations in multidisciplinary institutions     

Zhiya Zuo  Kang Zhao 《Journal of Informetrics》2018,12(3):736-756

Scientific research is increasingly relying on collaborations to address complex real-world problems. Many researchers, policymakers, and administrators consider a multidisciplinary environment an important factor for fostering research collaborations, especially interdisciplinary ones that involve researchers from different disciplines. However, it remains unknown whether a higher level of multidisciplinarity within an academic institution is associated with internal collaborations that are more prevalent and more interdisciplinary. Analyzing 90,000 publications by 2500 faculty members in over 100 academic institutions from three multidisciplinary areas, information, public policy, and neuroscience, we investigated the connection between multidisciplinarity and research collaborations. Based on social network analysis and text mining, our analysis suggests that more multidisciplinary institutions are not necessarily more collaborative, although they do feature collaborations that are more interdisciplinary. Our findings provide implications for academic administrators and policymakers to promote research collaborations and interdisciplinarity in academic institutions.  相似文献   

Sport-based physical activity intervention on body weight in children and adolescents: a meta-analysis     

Kyungun Kim  Gina Ok  Soeun Jeon  Minsoo Kang 《Journal of sports sciences》2017,35(4):369-376

Controversial results reported in past research pertaining to the effectiveness of sport-based physical activity interventions on weight loss. The purpose of this study was to assess the impact of sport-based physical activity intervention on body weight in children and adolescents using a meta-analysis. Academic Search Complete, Education Source, ERIC, Medline, ProQuest, PsycINFO and SportDiscus databases were searched from January 2000 to April 2015. Eighteen studies met following inclusion criteria: sport-based intervention studies; subjects aged 6–18 years; reported body weight; published in peer-reviewed journals written in English. The mean intervention duration was 17.72 weeks. The overall effect size (ES) was 0.52 (Cohen’s d (ES) = 0.52, 95% CI = 0.08, 0.95, P = 0.021), using a random effects model. Moderator analyses results showed that the Q statistic for the sport type (individual sport or team sport, Qbetween (Q_b) = 14.52, df = 1, P = 0.001) and diet control (Qbetween (Q_b) = 8.85, df = 1, P = 0.001), explained the heterogeneity of ESs. Our study showed that there was a moderate overall effect of sport-based physical activity intervention on body weight reduction. The team sport type (ES = 1.05, 95% CI = 0.44, 1.66) and diet control group (ES = 0.84, 95% CI = 0.26, 1.41) appeared to be more effective in reducing body weight.  相似文献   

采煤塌陷对中国西部风沙区土壤质量的影响机制及修复措施   总被引：1，自引：0，他引：1  

史沛丽  张玉秀  胡振琪  马康  于冰冰 《中国科学院大学学报》2017,34(3):318-328

中国西部风沙区生态环境脆弱，煤炭井工开采造成土体坍塌，产生地表裂缝，导致地下水位下降、土壤含水量减少、土壤养分流失、土壤酶活性降低、微生物数量和群落结构发生变化、土壤沙化、植被死亡以及生物多样性破坏等生态环境问题。主要剖析近年来煤炭地下开采对西部风沙区土壤理化性质、土壤酶活性、土壤微生物和植被生长等方面的影响机制，提出塌陷区土壤环境破坏的修复措施。指出今后的研究应集中于采煤塌陷区土壤质量的恢复和土壤微生物多样性的演替规律方面，为中国西部风沙区采煤塌陷地的生态修复提供理论基础和技术支持。  相似文献   

第31届奥运会中、美、英竞技实力对比分析     

陈伊君  赵慎 《安徽体育科技》2017,38(3)

采用文献资料法、对比分析法、数理统计法.研究结果表明美国在获得奖牌的性别比例上男女比例基本平衡,英国呈现男性比女性多,中国女性比男性多.在获得金牌的大项目上英国比美国多,美国比中国多.我国在属于准确性和隔网对抗性的项目中优于美国和英国,在速度性、耐力性、综合性、同场对抗性项目中与美英差距较大.  相似文献   

摩洛哥的山羊会上树     

沈海滨 《文化交流》2011,(2):79-81

摩洛哥如同一个天方夜谭的国度：在公路上会突然看见满树的山羊；古城内人人捧着面包，朝同一目的地进发；夜市里，吃饭如同上了一堂解剖课………漫游在这古老的国家，眼睛和心灵一次又一次的被艳丽的阿拉伯文化所冲击。皮革、神灯、香料、魔毡，还有黑纱背后那双深邃的大眼睛，使人念念不忘。  相似文献   

渐江绘画艺术形式对安徽建筑景观设计的启迪     

肖康  李超峰 《怀化学院学报》2015,(6)

渐江曾生活于现今的安徽地域,对安徽的人文风貌在其画作中描绘了许多。渐江的绘画画风笔墨严谨、格调简约,对描绘的自然景物高度概括,虽然用墨偏淡,但不显虚空。画面形式具有现代设计学的韵味,构图独特。这种当时的新视觉形式,不仅影响了中国的山水画,而且也给安徽建筑景观设计在形式和意境方面带来了影响和启示。  相似文献   

平原省建置缘由考     

申志锋 《河南科技学院学报》2015,(3):104-108

平原省建制始于1949年8月1日,止于1952年11月15日,位于今山东、河南、河北的三省结合部,是中原地区的核心地带。它的设立不仅是其本身发展的需要,还是区域发展的结果。同时,平原省在成立后,各个专区所辖县数量是逐渐减少的,最终趋于稳定,这恰恰反映政区建设就是一个不断探索与优化的过程。  相似文献   

高等远程教育质量保证核心要素研究     

沈欣忆 《北京广播电视大学学报》2017,22(3)

1999年现代远程教育工程试点以来,我国远程教育迅速发展,但其质量受到诟病.建立质量保证体系是解决质量声誉的关键,而质量保证标准是质量保证的根本和准则.本研究立足于研究质量保证核心要素,为质量保证标准的构建奠定基础.研究通过文献梳理得到了远程教育质量保证核心要素,通过大范围调研得到远程教育各个利益相关者对要素的重要性打分,通过专家排序法得到利益相关者在各个要素上的权重,重要性分数和权重结合可得到加权平均值,从中确定了核心要素的重要性排序.本研究的研究成果为远程教育质量保证要素和要素的重要性排序,可为远程教育质量保证标准的制定提供借鉴,为促进质量保证体系的构建和远程教育的发展提供参考.  相似文献