国内外社交媒体存档研究与实践述评     

黄新荣  高晨翔 《图书情报工作》2019,63(4):122-134

[目的/意义]社交媒体是网络信息资源的重要组成部分，对国内外社交媒体存档的相关研究成果进行总结与梳理，形成比较完整的综述内容，为国内该领域研究提供参考与借鉴。[方法/过程]基于多学科视角，通过文献计量与内容分析得到社交媒体存档领域的文献分布情况，总结社交媒体存档的理论基础，从宏观层面将社交媒体存档理论与实践研究归纳为"目的与主体""政策与指南""问题与障碍"三个研究主题并展开综述。[结果/结论]国内外社交媒体存档研究具有发展速度较快、与实践结合紧密、区域发展不均衡等特征，在未来研究中需要重视研究对象的变化、管理标准的构建以及多主体间的协作。最后对国内社交媒体存档研究与实践的发展提出建议。  相似文献   

从“暴力美学”视域审视武术散打运动     

连美雪  马剑 《中华武术(研究)》2020,(1):124-125,83

从“暴力美学”视角对武术散打进行审视与分析,在社会的现代化发展中,武术徒手格斗形式运动项目中的散打与暴力美学的结合表达了当前社会人们对格斗竞技类项目的态度与观点。散打运动中体现着暴力美学,外在展现的暴力动作实际上是内心世界的写照,同时也是观众内心情感的寄托宣泄。如今的社会,散打运动的独特魅力吸引着更多的人来认识它,攻防技击的本质是散打运动发展的基石,也是对它的准确定位。  相似文献   

Searching for momentum in NBA triplets of free throws     

Elia Morgulev  Ofer H. Azar  Michael Bar-Eli 《Journal of sports sciences》2020,38(4):390-398

ABSTRACT

The literature on momentum is still undecided, with mixed results whether momentum exists or is only perceived to exist (“hot hand fallacy”). We explore whether momentum exists by looking at cases in which a basketball player has three consecutive free throws. A free throw is a well-defined task executed in a stable environment, allegedly giving momentum optimal chances to occur. Taking 14 NBA seasons we collected over 4500 three-free-throw sets (triplets). We obtained the outcomes of the shots as well as some additional variables about the player and the game: the player’s average free-throw percentage, home or away, and the game score and the quarter when the free throws were attempted. We first analyse the hit rates in the three shots and then proceed to regression analysis that also controls for the abovementioned variables. We address several concerns raised in the literature. All comparisons and analyses yield the same conclusion that there is no evidence for momentum in the data.  相似文献   

强磁场下液态金属在竖直平板外的自由对流换热     

周仲凯  王增辉  陈然 《中国科学院大学学报》2020,37(1):13-19

托克马克装置中面向等离子体部件在不同的位置存在很大的温差，导致面向等离子体部件表面液态金属产生自由对流。以此为背景，实验研究液态金属受横向磁场影响下竖直壁面上的自由对流换热规律。实验采用K型热电偶测量环境与壁面两侧的温度，利用多普勒超声波测速仪测量壁面上的液态金属速度，分析不同磁场强度和加热热流密度条件对竖直平板外表面的流动与换热影响规律。研究表明：竖直平板的局部换热系数与特征长度成反比，即距加热平板起始段越远换热越弱，同时增强加热功率使表面换热系数增加。在强磁场条件下，壁面边界层的流动与换热均普遍被抑制；但是在弱磁场下，增加磁场会强化平板表面的自由对流与换热，根据实验结果发现该转折点出现在磁相互作用数为1~4的范围。  相似文献   

三维视角下天津自贸区知识产权保护机制构建战略研究     

李晓锋 《科技管理研究》2016,(13):140-144

从国外、国内、天津自身3个视角出发,分析欧盟地区、上海自由贸易园区、天津自由贸易园区3个区域知识产权保护机制建设的经验与问题,通过对比研究,识别出这些园区的关键成功要素以及成功异同,发现管理体制创新、纠纷处置创新、服务运用深化等相关因素起着决定性作用,在此基础上提出天津自由贸易园区知识产权保护机制的构建思路与战略设想.  相似文献   

基于信息技术的图书馆自由开放的实现     

罗燕 《现代情报》2006,26(3):57-59

本文阐述了图书馆自由开放的必要性，传统图书馆自由开放的局限性．信息时代图书馆自由开放服务的基础以及网络环境下图书馆自由开放的方式。  相似文献   

烟雾吸入伤早期氧化与抗氧化动态平衡变化的实验研究   总被引：1，自引：0，他引：1  

谢尔凡  杨宗城 《科技通报》1997,13(1):39-43

采用大鼠烟雾吸入伤模型，动态观察了伤后血浆、支气管肺泡灌洗液（ＢＡＬＦ）和肺组织中超氧化物歧化酶（ＳＯＤ）活性、丙二醛（ＭＤＡ）和共轭二烯（ＣＤ）含量的变化，辅以动脉血气分析、肺水量测定、ＢＡＬＦ中白细胞分类计数和病理检查．结果发现，伤后动物出现急性呼吸衰竭和严重肺水肿，肺内大量炎细胞聚集浸润；血浆、ＢＡＬＦ及肺组织中ＳＯＤ活性明显降低，ＣＤ和ＭＤＡ含量显著增加，ＭＤＡ／ＳＯＤ比值亦明显增高，且与ＢＡＬＦ中中性粒细胞数增加显著相关，提示氧化与抗氧化平衡失调可能在急性烟雾吸入性肺损伤的发生发展中起重要作用  相似文献   

From national policy-making to global edu-business: Swedish edu-preneurs on the move     

Linda Rönnberg 《教育政策杂志》2017,32(2):234-249

This study explores the movements of some Swedish former education policy-makers that are currently active as commercial edu-business actors with the ambition to expand in the Global Education Industry (GEI). The aim is to map and analyze how a selection of Swedish edu-preneurs affiliated with a particular Swedish school chain enter the GEI and thereby market both their commercialized services and the policy ideas about so-called free schools, in its Swedish version. The study shows how these edu-preneurs move from the domestic to global arenas and how their business and policy advocacy activities are framed and represented. Mobilization and public exposure of previous and present policy advocacy networks are important assets for these edu-preneurs as they navigate the GEI. The study illustrates how these actors make use of particular forms of knowledge, from department ministerial work and party politics, which blends with work in public relations and various edu-businesses, pointing to the interrelatedness of politics, policy, business, power, and ideology. The paper concludes by raising issues in need of further exploration and debate, pertaining to our understanding of education policy-making and, ultimately, democracy.  相似文献   

对高校学报传统发行模式的反思     

纪真真  朱孔伦 《郧阳师范高等专科学校学报》2006,26(6):142-144

高校学报“公开征订寥寥无几、内部交流为主、校内外赠阅为辅“的传统发行方式,已经严重地制约了高校学报的发展.在不改变学报性质的前提下,应该实施“以高校图书馆为交流的主渠道,以校内外赠阅为交流的副渠道,进一步扩大有偿消费群体“的发行方式,以实现学报应有的价值.  相似文献   

论文学翻译中的语体     

汤吉 《湖州师范学院学报》2003,25(Z1):149-153

Translation is a subject which needs to draw on findings and theories of other related subjects in order to develop andformalize its own methods. Stylistics is a borderline subject which has a great deal to offer to the translation studies. Since a lotof problems emerging in literary translation can be effectively solved by stylistic analysis, the present paper discusses tbe role ofstylistics in literary translation in deciding on methods of translation: literal translation or free translation and overcoming diffi-culties in translating poems.  相似文献