聚力探索特色小镇 开辟体产全新格局——北京大学第9届中国体育产业高峰论坛综述     

赵雯婷  丁怡清  封英  张锐 《北京体育大学学报》2019,42(2):95-102

摘要：习近平总书记在十九大报告中出要广泛开展全民健身活动，加快推进体育强国建设。随着“健康中国”上升为国家战略、居民消费升级需求日益加深，我国运动休闲特色小镇的发展路径显得尤为重要。在此背景下，专家学者和业界名流齐聚北京大学，集思广益、畅所欲言，为特色小镇献计献策，共商特色小镇建设合作大计。此次中国体育产业高峰论坛分论坛以“运动休闲特色小镇”为主题，对运动休闲特色小镇这个概念进行了全方位、系统性的深刻剖析，并结合运动休闲特色小镇相关成功实践经验，从前期策划、设计、投资到后期的建设、运营，再到内容为王、跨界融合、聚集建构效应，多层次、多角度阐释了运动休闲特色小镇建构的内在机理和方法，为建设运动休闲特色小镇事业，开创全新体育文化产业格局提供了切实可行的路径。  相似文献   

Mapping migrant vernacular discourses: Mestiza consciousness,nomad thought,and Latina/o/x migrant movement politics in the United States     

Michael Lechuga 《Journal of International and Intercultural Communication》2020,13(3):257-273

ABSTRACT

This essay reads the Latina/o/x migrant vernacular discourses that emerge out of pro-migrant activism. Anzaldúa’s notion of mestizaje – a logic of border consciousness – is put into conversation with Deleuze’s notion of nomad thought – a logic of movement – to inform a rhetorical strategy for reading the vernacular archive of social movement discourse. The “No Papers, No Fear” is one such social movement that demonstrate the logic of mestizaje/nomadism in their communication strategies. This study illuminates three tensions that define the ways Latina/o/x migrants in the US navigate the spaces of citizenship: tensions between movement/stasis, migrant identity/national identity, and fear/safety.  相似文献   

The impact of student misconceptions on student persistence in a MOOC     

Chen Chen  Gerhard Sonnert  Philip M. Sadler  Dimitar Sasselov  Colin Fredericks 《科学教学研究杂志》2020,57(6):879-910

Massive Online Open Courses (MOOCs) provide opportunities to learn a vast range of subjects. Because MOOCs are open to anyone with computer access and rarely have prerequisite requirements, the range of student backgrounds can be far more varied than in conventional classroom-based courses. Prior studies have shown that misconceptions have a huge impact on students' learning performance; however, no study has empirically examined the relationship between misconceptions and learning persistence. This study of 12,913 MOOC-takers examines how students' misconceptions about the upcoming course material affect course completion. Using a survival analysis approach, we found that, controlling for the score in a pre-course test, students holding more misconceptions had a higher dropout rate at the start of the course, an effect that diminished over time. Other student variables were found to have a positive impact on survival that persisted throughout the entire course: U.S. location, higher age, an intention to complete, better English skills, prior familiarity with the subject, motivation to earn a certificate, and score and time spent on the previous problem set (homework). By contrast, student gender, education level, number of previous MOOCs completed, and motivation to participate in online discussion forums did not affect survival.  相似文献   

Making Video News Visible: Identifying the Optimization Strategies of the Cybermedia on YouTube Using Web Metrics     

Carlos Lopezosa  Enrique Orduna-Malea  Mario Pérez-Montoro 《Journalism Practice》2020,14(4):465-482

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Is academic tracking related to gains in learning competence? Using propensity score matching and differential item change functioning analysis for better understanding of tracking implications     

《Learning and Instruction》2020

This study analyzes gains in cognitive components of learning competence with respect to cohorts based on ability tracking in a Czech longitudinal study. Propensity score matching is used to form parallelized samples of academic and non-academic track students and to eliminate the effect of selective school intake. We applied regression models on the total scores to test for the overall track effect. Furthermore, we analyze scores and gains on the subscores and check for differential item functioning in Grade 6 and in change to Grade 9. While after 3 years, no significant difference between the two tracks was apparent in the total learning competence score, we did, however, find significant differences in some subscores and in the functioning of some items. We argue that item-level analysis is important for deeper understanding of the tracking implications and may provide the basis for more precise evidence-based decisions regarding the tracking policy.  相似文献   

Scope and Difficulties of the Transmedia Practice. A Case Study on the Spanish PSM System     

Ainara Larrondo Ureta 《Journalism Practice》2020,14(8):991-1007

ABSTRACT

According to a growing volume of academic literature on the subject, transmedia fiction and non-fiction production is now one of the main areas driving innovation in media companies, thanks to the improvements it brings in numerous interconnected fields: narrative and content, management and productive strategy, brand promotion, etc. In this context the article focuses on transmedia linked to public broadcasting companies, starting with a qualitative study based on interviews with expert professionals from thirteen corporations in Spain, one operating at the national level (RTVE) and twelve at the regional level (A Punt Media, CARTV, CCMA, CRTVG, CMM, EITB, EPRTVIB, RTVM, RTPA, RTVA, RTRM and RTVC). The results show how professionals view the concept of transmedia production, its advantages, disadvantages and the challenges it poses, which depend on these corporations’ service and relationship with audiences. As the conclusions state, the keys factors for understanding the professional transmedia strategy of public broadcasting corporations are found in the characteristics of today’s media market, which is suffering from budget cuts and growing competition.  相似文献   

Teaching for social justice: A research synthesis on Asian American and Pacific Islander teachers in U.S. schools     

《Teaching and Teacher Education》2020

This article examines social justice in teaching and teacher education with a focus on the experiences, pedagogies, and instructional practices of Asian American and Pacific Islander (AAPI) teachers. We synthesized 37 peer-reviewed research publications on AAPI teachers’ experiences and contributions to diversity and social justice. The results show AAPI teachers disrupting Whiteness through beliefs, pedagogies, and practices that value multiple perspectives and marginalized voices. Policy implications include supporting cultural and linguistic diversity in teacher education programs and schools and providing opportunities for teachers to engage in critical praxis regarding their racial identities and issues of equity in education.  相似文献   

人文社科专著众筹OA出版发展现状和思考——以Open Book Publishers和Knowledge Unlatched为例     

徐志玮 《图书情报工作》2021,64(22):77-84

[目的/意义] 梳理人文社科专著众筹OA出版的发展现状，分析具有公益性特点的OA出版物和具有商业性特点的众筹出版所引起的冲突，以期对学术专著众筹出版提出有价值的思考。[方法/过程] 从发起者、投资者和众筹平台3个基本要素梳理Open Book Publishers和Knowledge Unlatched的众筹模式，比较异同点，探讨两者在竞争中引起的问题。[结果/结论] 目前，欧美国家的学术专著众筹出版分为高校、众筹商和OA出版社3种模式。Knowledge Unlatched是期望通过对图书馆的优质服务获得收益的众筹商，Open Book Publishers是借助网络开展众筹出版的OA出版社，两者属于商业化大型公司和非营利性OA出版社的竞争关系，在OA出版物的商业化开发、财务公开透明、垄断性的销售模式和审核制度方面值得高度关注。  相似文献   

冈底斯中段尼木斑岩铜矿田的K-Ar、^40 Ar/^39 Ar年龄：对岩浆-热液系统演化和成矿构造背景的制约          下载免费PDF全文

李金祥秦克章  李光明杨列坤 《中国科技期刊研究》2007,23(5):953-966

青藏高原冈底斯斑岩成矿带不同于经典的产于岛弧和大陆边缘的斑岩铜矿,而形成于后碰撞挤压向伸展转变期,显示了极好的成矿前景.本文对冈底斯中段尼木矿田白容、厅宫和冲江斑岩铜矿区斑岩体进行了系统研究,确定出斑岩体演化和侵入序列为：似斑状二长花岗岩→成矿二长花岗斑岩→石英闪长玢岩→花岗闪长斑岩.K-Ar和^40 Ar/^39 Ar年代学研究获得白容矿区似斑状二长花岗岩中角闪石的K-Ar年龄为16.9±2.4Ma;石英闪长玢岩中黑云母的K-Ar年龄为12.3±0.2Ma、^40 Ar/^39 Ar坪年龄为12.5±0.2Ma;花岗闪长斑岩中黑云母的K-Ar年龄为11.5±0.2Ma、^40 Ar/^39 Ar坪年龄为12.4±0.2Ma;厅宫矿区石英闪长玢岩中黑云母的K-Ar年龄为13.8±0.2Ma、^40 Ar/^39 Ar坪年龄为14.9±0.2Ma;花岗闪长斑岩中黑云母的K-Ar年龄为13.5±0.3Ma、^40 Ar/^39 Ar坪年龄为14.2±0.2Ma,这些年龄表明：石英闪长玢岩晚于似斑状二长花岗岩,略早于花岗闪长斑岩.成矿与二长花岗斑岩有关,其侵位时间晚于似斑状二长花岗岩,早于石英闪长玢岩和花岗闪长斑岩.尼木癍岩铜矿田这种复式杂岩体较充分的分异演化有利于含矿热液的集中与逐渐富集成矿.白容斑岩铜矿蚀变矿化二长花岗斑岩的蚀变绢云母的K-Ar年龄为11.8±0.2Ma,^40 Ar/^39 Ar坪年龄为12.0±0.1Ma,代表了中低温蚀变和矿化末期的年龄.白容矿区绢云母化带的蚀变年龄与石英闪长玢岩和花岗闪长斑岩的黑云母^40 Ar/^39 Ar年龄基本一致,与厅宫矿区辉钼矿Re-Os年龄及石英闪长玢岩和花岗闪长斑岩的黑云母^40 Ar/^39 Ar年龄同样基本一致,暗示两个矿区石英闪长玢岩和花岗闪长斑岩的岩浆结晶冷却与成矿二长花岗斑岩后期热液成矿时间上有重叠.结合前人年龄数据大致确定出白容矿区岩浆-热液活动时限为0.5～5Ma,厅宫为4Ma,冲江为4.5Ma.尼木矿田成矿斑岩^40 Ar/^39 Ar年龄晚于冈底斯碰撞后第一次快速隆升时间≈21Ma,15Ma冈底斯中段NS向正断层开始活动,表明含矿斑岩体可能侵位于地壳加厚、冈底斯山大规模隆升到一定程度后出现弱伸展环境的构造背景下,即斑岩铜矿形成于从南北向挤压隆升到东西向伸展初始发育的过渡构造背景.  相似文献   

信息伦理学研究中若干问题的思考   总被引：13，自引：0，他引：13  

郭卫真  丛敬军 《情报理论与实践》2002,25(2):88-91

The further development of information ethics needs to solve some important ethic problems involved with disciplinary construction. These problems include the cause of the formation of information ethics; the research method,attribution and features of information ethics; the connotation and systematic structure of information ethics; the enlightenment we gain from the studies of the guiding principles of information ethics in foreign countries. The scientific analysis and exposition of these problems are helpful to the prosperity and perfection of information ethics and to the construction of social information ethics.  相似文献