政务B站号信息传播效果影响因素与实证研究     

陈强  张杨一  马晓悦  曾润喜 《图书情报工作》2020,64(22):126-134

[目的/意义] 作为政府与青年群体沟通的重要平台，政务Bilibili账号的信息传播效果直接决定其沟通效率和效果。对政务Bilibili账号信息传播效果影响因素的研究有利于沟通效果的提升。[方法/过程] 本研究基于共青团中央Bilibili账号的471个样本，采用内容分析和回归分析等系统考察内容主题、视频类别、封面图类型、屏幕形式、字幕、组织形式、剪辑率和视频时长等因素对政务Bilibili账号信息传播效果的影响。[结果/结论] 结果表明，科技类、音乐类和时尚类主题的视频能够提升整体传播效果，科技类视频的贡献度最高；情景剧、实拍视频和监控视频都正向显著影响整体传播效果，实拍视频的贡献度最高。视频剪辑率、竖屏视频、字幕添加、合作创作等均能显著提高整体传播效果，竖屏在整体传播效果模型中的贡献度最大。视频时长和封面图的作用不显著。政务Bilibili账号运营应充分释放青年的爱国势能、创新视频形式、优化视频制作流程、创新组织形式。  相似文献   

Creativity development in preschoolers: The effects of children’s museum visits and other education environment factors     

《Studies in Educational Evaluation》2020

As one of the potential contextual factors for creativity development, children’s museum has been introduced to China from the western world in recent years, with the aim to offer a new informal educational environment to enhance children’s creativity. Based on experimental data for two groups of 4-year-old preschoolers (218 for the family mode and 202 for the preschool mode) from Beijing with an appropriately one-year long intervention (September 2017 to July 2018), this study examines the effect of regular visits to a children’s museum and other education environmental factors on young children’s creativity measured by Torrance’s Thinking Creatively in Action and Movement (TCAM) test. Results indicate that in terms of family visit, compared to the control group, the intervention that offers 18 times free tickets to visit a children’s museum significantly improved the experiment group’s originality (a sub-measure of creativity) by an additional 34.51 %. A beneficial effect of this intervention was also found in improving children’s fluency from the sample of preschool group visit (46.80 %). In addition, family education environment factors such as public preschool attendance, frequency of visits to science museums, and the degree of parents’ latitude were also found to positively affect creativity. Children’s personal features such as sex and geographic location of the family are also found to be related with children’s creativity.  相似文献   

Tennis superstars: The relationship between star status and demand for tickets     

《Sport Management Review》2020,23(2):330-347

Akin to other sports, professional tennis is urged to adopt a consumer-centred strategy and understand the influence of the star status of elite players on demand for its core product. Measuring the impact that tennis players have on demand for match attendance remains a key element towards achieving that goal. Using data from the Australian Open ticket sales, the authors demonstrate how individual players have influenced stadium attendance at the Grand Slam. Findings indicate that some players are associated with a strong positive impact on demand for tickets, above and beyond their performance ratings, reflecting their value to the Australian Open. The authors discuss how this star status can be used to inform business decisions related to tournament management, match scheduling, and determining player appearance fees, to ultimately drive better commercial outcomes and deliver a world-class sporting event. The findings have implications for tournament organisers, player managers and those that market player activities.  相似文献   

Evaluating the evidence base for evidence-based instructional practices in chemistry through meta-analysis     

Md Tawabur Rahman  Scott E. Lewis 《科学教学研究杂志》2020,57(5):765-793

Investigating the effectiveness of instructional practices provides an evidence base to inform instructional decisions. Synthesizing research studies on instructional effectiveness provides an estimate of the generalizability of effectiveness across settings, along with an exploration of factors that may moderate the impact, which cannot be achieved within individual studies. This study sought to provide a synthesis of evidence-based instructional practices (EBIPs) particular to chemistry through meta-analysis. Ninety-nine studies were analyzed comprising a broader view of chemistry specific studies than past meta-analyses. The results showed that EBIPs feature a demonstrably positive impact on students' academic performance in chemistry, although assessment topic coverage and setting size emerged as relevant moderators of impact and prevented making definitive conclusions of the relative impact of each EBIP. In examining publication bias, an asymmetric distribution of studies based on standard error (SE) and effect size was found, indicative of potential publication bias. To explore the potential impact of bias, the trim and fill method was employed resulting in a range for the overall weighted effect size from 0.29 to 0.62. The study concludes that evidence-based instructional practices have demonstrated effectiveness even in consideration of potential publication bias, as the range of effect sizes remains positive, but highlights the continued need to publish null findings in the research literature.  相似文献   

版权强国背景下版权保护对我国版权产业发展的影响研究     

宋伟  阮雪松 《科技管理研究》2019,39(8)

版权保护对我国版权产业发展具有重要的意义。基于我国2016年的相关数据,构建指标体系,测算出版权保护强度这一版权保护的关键因素,并结合外商投资、城镇单位文化、体育和娱乐业就业人数、文化、体育和娱乐业固定资产投资、每十万人口各级学校平均在校学生数共五个因素来分析版权保护对版权产业发展的作用机制。研究发现,版权保护强度、外商投资以及城镇单位文化、体育和娱乐业就业人数对版权产业发展具有不同程度的正向影响,其他两个因素则不显著,并据此相应地提出促进我国版权产业发展的对策建议。  相似文献   

Combined effects of exposure to hypoxia and cool on walking economy and muscle oxygenation profiles at tibialis anterior     

Masahiro Horiuchi  Yoko Handa-Kirihara  Daijiro Abe  Yoshiyuki Fukuoka 《Journal of sports sciences》2019,37(14):1638-1647

We investigated combined effects of ambient temperature (23°C or 13°C) and fraction of inspired oxygen (21%O₂ or 13%O₂) on energy cost of walking (C_w: J·kg^?1·km^?1) and economical speed (ES). Eighteen healthy young adults (11 males, seven females) walked at seven speeds from 0.67 to 1.67 m s^?1 (four min per stage). Environmental conditions were set; thermoneutral (N: 23°C) with normoxia (N: 21%O₂) = NN; 23°C (N) with hypoxia (H: 13%O₂) = NH; cool (C: 13°C) with 21%O₂ (N) = CN, and 13°C (C) with 13%O₂ (H) = CH. Muscle deoxygenation (HHb) and tissue O₂ saturation (StO₂) were measured at tibialis anterior. We found a significantly slower ES in NH (1.289 ± 0.091 m s^?1) and CH (1.275 ± 0.099 m s^?1) than in NN (1.334 ± 0.112 m s^?1) and CN (1.332 ± 0.104 m s^?1). Changes in HHb and StO₂ were related to the ES. These results suggested that the combined effects (exposure to hypoxia and cool) is nearly equal to exposure to hypoxia and cool individually. Specifically, acute moderate hypoxia slowed the ES by approx. 4%, but acute cool environment did not affect the ES. Further, HHb and StO₂ may partly account for an individual ES.  相似文献   

传播的游戏理论视角下 新浪微博俄罗斯世界杯传播效果分析          下载免费PDF全文

陈肖鹏 《河北体育学院学报》2019,33(3):33-38

使用“传播的游戏理论”，对新浪微博俄罗斯世界杯传播效果进行分析，并对新媒体用户的需求进行探讨。研究认为，世界杯传播是一场盈余时代的足球“游戏”，满足用户对愉悦、趣味的需求和对游戏的需求是新媒体未来发展的一种趋势；新浪微博俄罗斯世界杯期间，体现主观、个性的“选择性会聚”让用户在“游戏”过程中促进了“自我”的发展；只为享受足球魅力的非功利性传播为用户提供了一个宽松的“游戏”环境；利用微博话题、短视频、直播等新媒体技术传播乐趣，用户从“游戏”中收获了愉悦。对于传播效果的研究立足受众的个性特征和主观心态，注重体现个体主观能动意识，对把握未来新媒体传播发展和趋势具有启示意义。  相似文献   

风险投资声誉、智力资本与企业价值          下载免费PDF全文

马宁  姬新龙 《科研管理》2019,40(9):96-107

风险资本与智力资本的有效协同能够实现创业企业知识、资本、管理与创新的完美结合，而拥有高声誉背景的风投在利用其经验和广泛的社会关系帮助企业快速成长方面作用更加突出。本文将创业企业的智力资本划分为人力资本、结构资本、创新资本与社会资本四个组成部分，基于风险投资声誉的视角，探讨风险资本与智力资本的协同关系。结果显示：高声誉风险投资在创业企业人力资本和结构资本两方面的协同效应并不显著，而与创新资本和社会资本两方面的协同效应突出，尤其与社会资本的协同效应能够显著提升创业企业的内在价值。该结论表明高声誉的风险投资机构亟需对目标企业的人力资源、战略规划等方面积极关注，并提供更多的增值服务。  相似文献   

专利被引频次的时间影响研究     

罗文馨  赵亚娟 《图书情报工作》2019,63(9):47-60

[目的/意义]研究时间因素对专利被引频次的影响,可以减少时间因素对技术评价活动的制约,提高评价的准确性和可信度。[方法/过程]采集1975-2017年的美国专利数据,开展基于固定效应法的专利被引频次的修正研究。将专利按照不同公开年份和不同技术领域分组,选定组内均值和6个TOP分位数为被引频次基准,统计当前时间点的被引频次基准线及基准线的历史时序变化情况。建立神经网络模型,拟合基准线的时序变化规律,并预测未来统计时间点的基准线。[结果/结论]专利公开年份和统计年份的时间差异,使得专利被引频次无法直接进行比较。本文建立了基于不同技术领域、不同公开年份和不同统计年份的专利被引频次基准线,为专利评估提供参考。  相似文献   

上海市公共体育设施建设效应评价研究          下载免费PDF全文

李陈 《体育科研》2019,(2):21-32

上海市公共体育设施建设的主要矛盾是市民日益增长的多元化体育需求和公共体育设施建设不平衡、不充分发展之间的矛盾。作为迈向卓越的全球城市，上海正为向市民提供多元化需求的公共体育设施而努力。本文根据“30分钟体育生活圈”的要求，对上海市公共体育设施建设效应进行研判，得出：（1）上海市公共体育设施布局呈现等级性，空间上呈现“中心-外围”特征，形成了“市-区-街道”三级空间尺度的公共体育设施空间布局。（2）上海市公共体育设施空间布局与人口密度分布呈正相关关系。健身点密度、市民球场、市民健身房、市民健身步道与人口密度分布呈现较强的正相关关系；农民健身工程与人口密度分布呈现较强的负相关关系。（3）上海市公共体育设施密度区域差异显著。公共体育设施建设正处于数量增加向质量提升的过渡阶段，正建设与卓越的全球城市和社会主义国际化大都市相匹配的公共体育设施与配套服务。（4）上海市公共体育设施建设总体评价较好，但存在难以满足多元化需求等问题。调查显示，居民对上海市公共体育设施建设的总体评价较好，满意度评价较高，但未满足个性化、多元化需求，在软件环境建设上仍有很大提升空间。  相似文献