Can social integration in schools be mandated: Evidence from the Right to Education Act in India     

《International Journal of Educational Development》2020

Although Affirmative Action policies have been enforced in many countries, their consequences are highly understudied, especially in the context of developing economies. Section 12(1)(c) of the Right to Education (RTE) Act enforced in 2009 is the first attempt to introduce affirmative action in primary schools in India. The act requires all private schools to reserve at least twenty five percent seats for children from economically weaker sections. To understand the effect of the act on i) social integration and ii) academic outcomes, we asked 1500 children (grades one to three) from four schools to answer friendship surveys and short tests in Mathematics and English. The schools in our sample vary considerably in constitution and were intentionally chosen to understand the impact of the act in different school settings. The friendship surveys show strong homophily i.e. non-RTE students cite other non-RTE students as friends, while RTE students chose to be friends primarily with other RTE students. Trends in test scores reveal that students admitted under the RTE quota score significantly lower than non-RTE students. However, RTE students who have a higher share of non-RTE friends have better test scores, suggesting that affirmative action may have a positive influence on learning outcomes for RTE children. Further we note that commitment from the school authorities and systematic monitoring and evaluation of the implementation of the act will go a long way in bringing out some of the benefits that this act was designed to achieve. Our findings have important policy implications with respect to ensuring proper implementation of the Section12(1)(c) of the RTE act in schools across the country.  相似文献   

从信息检索系统评估到知识服务平台评估     

李月琳  韩宏亮 《图书情报工作》2019,63(1):52-59

[目的/意义]随着知识服务平台的发展，如何通过评估改善知识服务平台的功能和设计以更好地服务于用户成为重要的问题。本文旨在探讨知识服务平台的评估要素和评估标准，为知识服务平台的评估实践提供理论指导。[方法/过程]从信息检索系统评估出发，回顾和梳理信息检索系统评估、数字图书馆评估的相关研究和理论模型、数字图书馆的评估要素和标准。[结果/结论]基于总结和归纳以往信息服务类系统的评估要素，结合知识服务平台的特征，阐述知识服务平台评估的要素和评估标准。  相似文献   

校企(地)联合培养社会体育指导与管理专业应用型人才的创新研究——以残疾人运动与康复方向为例     

程晖  董璧 《当代体育科技》2020,(1):159-160,162

针对社会体育指导与管理专业学生就业渠道不畅、市场前景萎缩的现状,通过构建校企(地)联合培养的社会体育指导与管理专业人才培养模式,打造残疾人运动与康复服务的专业小方向,重新构建专业人才培养目标定位、以市场为导向的课程体系和结合人才培养对接的实习、实训课程体系,为推动社会体育指导与管理专业培养模式和方向的转型与发展提供重要理论指导和借鉴。  相似文献   

足球比赛的负荷量化-结构、方法和特征     

缪律  史国生  黎涌明 《成都体育学院学报》2020,(2):93-99,106

足球比赛负荷是球员在比赛情景下完成各类动作所承受的物理、生理和心理等方面刺激之和。比赛负荷的量化结构分为外部和内部负荷,外部负荷的量化方法包括人工视频分析技术、自动轨迹追踪技术和全球定位设备,通过球员体能或技术表现的负荷量和强度来评定足球比赛中的行为活动特点,外部负荷特征表现为间歇性运动下频繁变向和短距离变速跑,高比例的中低强度无球跑穿插较少的高强度带球跑。内部负荷的量化方法包括耗氧量、心率和血乳酸等指标的测定,通过上述指标的变化幅度来评定足球比赛中的能量代谢水平;内部负荷特征表现为有氧供能为主、无氧磷酸原和糖酵解供能交替进行。现有研究局限为外部负荷低估了变向运动对足球比赛负荷的影响,内部负荷无法概括正式比赛的供能特征等。未来可尝试在优化量化方法基础上结合内外负荷,从而更精准地量化比赛负荷。  相似文献   

优秀双向飞碟运动员3号 靶位击发节奏与脱靶关系研究     

耿正洋 《河北体育学院学报》2020,34(4):71-75

双向飞碟射击项目中3号靶位是8个靶位中射击命中难度最大的靶位，是制约运动员整体命中率的关键所在。将双向飞碟双靶分为1靶击发、随靶、2靶击发3个阶段，对3名国内优秀运动员击发节奏特征进行分析。发现：①1靶击发阶段的节奏直接影响2靶中靶情况，1靶击发用时越长，2靶质量越差，想要提高2靶的命中率必须要提高1靶的动作质量。②随靶阶段的人枪结合能力会影响2靶命中率。③优秀运动员2靶击发阶段的时间节奏一致性较强，动作自动化程度较高。④整体击发节奏慢更易造成2靶脱靶。提出，运动员要提高打好1靶的能力，在保证1靶质量的前提下加强快打技术训练，同时提高随靶阶段人枪结合能力，加强对技术的监控和分析，辅助运动训练，科学提高成绩。  相似文献   

MARC to BIBFRAME: Converting the PCC to Linked Data     

Jacquie Samples  Ian Bigelow 《Cataloging & classification quarterly》2020,58(3-4):403-417

Abstract

The Program for Cooperative Cataloging (PCC) has formal relationships with the Library of Congress (LC), Share-VDE, and Linked Data for Production Phase 2 (LD4P2) for work on Bibliographic Framework (BIBFRAME), and PCC institutions have been very active in the exploration of MARC to BIBFRAME conversion processes. This article will review the involvement of PCC in the development of BIBFRAME and examine the work of LC, Share-VDE, and LD4P2 on MARC to BIBFRAME conversion. It will conclude with a discussion of areas for further exploration by the PCC leading up to the creation of PCC conversion specifications and PCC BIBFRAME data.  相似文献   

Bio-inspired untethered fully soft robots in liquid actuated by induced energy gradients     

Liang Xiong Lyu  Fen Li  Kang Wu  Pan Deng  Seung Hee Jeong  Zhigang Wu  Han Ding 《国家科学评论(英文版)》2019,6(5):970

Soft robotics with new designs, fabrication technologies and control strategies inspired by nature have been totally changing our view on robotics. To fully exploit their potential in practical applications, untethered designs are preferred in implementation. However, hindered by the limited thermal/mechanical performance of soft materials, it has been always challenging for researchers to implement untethered solutions, which generally involve rigid forms of high energy-density power sources or high energy-density processes. A number of insects in nature, such as rove beetles, can gain a burst of kinetic energy from the induced surface-energy gradient on water to return to their familiar habitats, which is generally known as Marangoni propulsion. Inspired by such a behavior, we report the agile untethered mobility of a fully soft robot in liquid based on induced energy gradients and also develop corresponding fabrication and maneuvering strategies. The robot can reach a speed of 5.5 body lengths per second, which is 7-fold more than the best reported, 0.69 (body length per second), in the previous work on untethered soft robots in liquid by far. Further controlling the robots, we demonstrate a soft-robot swarm that can approach a target simultaneously to assure a hit with high accuracy. Without employing any high energy-density power sources or processes, our robot exhibits many attractive merits, such as quietness, no mechanical wear, no thermal fatigue, invisibility and ease of robot fabrication, which may potentially impact many fields in the future.  相似文献   

Leg amputation side determines performance in curve sprinting: a case study on a Paralympic medalist     

Johannes Funken  Kai Heinrich  Steffen Willwacher  Ralf Müller  Jonas Böcker  Hiroaki Hobara 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(1):75-87

The lower limb kinetics of curve sprinting in amputees are not well described in the literature, particularly with respect to the effect of the side of amputation. This is an issue due to the importance of the knowledge for prosthetic design and classification of athletes. Thus, the aim of this study was to investigate the influence of side of amputation on curve sprinting performance in athletes with a unilateral leg amputation. A three-dimensional motion analysis system (Vicon), four force plates (Kistler) and a modified mathematical human model (ALASKA) were used to compare clockwise and counter clockwise curve sprinting lower limb kinematics and kinetics of a Paralympic medalist with a left-sided knee exarticular amputation. Results reveal that vertical ground reaction force application and total vertical impulse were lower when the affected limb was at the inside of the curve. The unaffected limb showed joint mechanics different to those established for non-amputee athletes and might contribute better to propulsion when being the inside limb. Curve sprinting biomechanics and the ability to attain high radial velocities are directly dependent on the side of amputation relative to the curve direction in a unilateral amputee athlete of highest performance level.  相似文献   

多旋翼无人机微多普勒特性分析与特征提取     

马娇  董勇伟  李原  李凌霄  杨杰芳 《中国科学院大学学报》2019,36(2):235-243

针对多旋翼无人机目标的识别问题，提出一种基于伽柏（Gabor）变换的瞬时频率估计与快速傅里叶变换（FFT）相结合的微多普勒特征提取算法。首先建立多旋翼无人机旋翼回波模型，并通过仿真分析叶片数目、旋翼转速和初始相位等参数对微多普勒特征的影响，利用Gabor变换得到时频特征。在此基础上通过瞬时频率极大值法提取微多普勒频率，并对瞬时频率采用FFT提取旋翼数和转动频率，从而获得叶片长度估计值。实测数据验证了该算法较为准确地提取无人机的微多普勒参数。  相似文献   

Associations between partnership characteristics and perceived success in Dutch sport-for-health partnerships     

《Sport Management Review》2019,22(1):142-152

To reach and include socially vulnerable people through sport, it is important to create partnerships between sports organisations and public health organisations (i.e., sport-for-health partnerships). Working in sport-for-health partnerships is challenging, however, and little is known about how to manage such partnerships. To explore possible predictors of successful sport-for-health partnership, the authors administered a questionnaire among 86 participants in Dutch sport-for-health partnerships. The questionnaire included measures pertaining to three indicators of successful inter-sectoral partnership (i.e., partnership synergy, partnership sustainability, and community outcomes) and nine partnership elements that may predict its success. Multivariate results suggest that (a) partnership synergy may be best predicted by communication structure and building on the partnership participants’ capacities, (b) community partnership outcomes may be best predicted by partnership visibility and task management, and (c) partnership sustainability may be best predicted by partnership visibility. Hence, the authors would recommend actors in sport-for-health partnerships to pay particular attention to communication structure, building on capacities, visibility, and task management.  相似文献