运动对人格干预的元分析

运用文献资料法、逻辑分析法、数理统计法等研究运动对人格发展的影响,进而为学校体育课程改革、学生全面发展提供依据。在Web of Science、Pub Med数据库、中国知网和万方数据库中检索运动影响人格的研究文献,经过严格筛选最终纳入4篇文献,均采用卡特尔人格问卷测量运动对人格的影响。研究的总样本量为526人,通过Cochrane评估工具对所选文献质量和发表偏倚情况进行科学评估,所纳文献质量属于中上等水平。运用Review Manager 5.3软件对纳入数据进行meta分析,结果显示,运动对聪慧性、敢为性、乐趣性、恃强性、有恒性水平均有显著提升作用,运动能显著降低参与者的怀疑性水平。亚组分析结果显示:登山运动、健美操、三大球、游泳可以显著提高个体的乐群性。三大球、小球、田径、民传和游泳均能显著降低参与者的实验性,表明运动能使个体遵守社会规则和道德准则。登山、三大球、田径、民传和游泳能显著提高个体的稳定性水平。在忧虑性上,三大球、小球、田径、民传和游泳运动能显著降低个体的忧虑性水平。在有恒性上,登山、健美操、三大球、田径能显著提高参与者的有恒性。在独立性上,三大球、小球、田径、民传和...     

基于灰色系统理论的专利授权数预测研究——以辽宁省为例

[目的/意义]旨在准确、合理地对专利授权数进行预测.[方法/过程]运用灰色系统理论,对待选因素进行灰关联度计算,选择关联度较高因素的统计数据,形成被比较序列,再结合参考序列建立GM(1,N)模型,对专利授权数进行预测和误差检验.[结果/结论]通过与常规GM(1,N)模型对比,建立的GM(1,6)模型的预测准确度优于前者...     

基于财务会计岗位课程的思政教学改革探索

课程思政的目标是立德树人,将德智体美劳贯穿育人的全过程,把学生培养成德智体美劳全面发展的高素质人才是一切教育的根本.课程思政对会计专业课程改革至关重要.本文从财务会计岗位课程思政改革的特点出发,设计岗位课程的思政点,并探索切实可行的岗位课程思政实践路径.     

国家安全学科体系构建的内在逻辑与基本面向

[目的/意义]近年来,在教育部下发关于加强大中小学国家安全教育的文件以后,学术界有关国家安全学的研究呈现活跃之势,但其中对该学科理论体系构建的深入探究较为缺乏。[方法/过程]国家安全学作为一门新兴学科,“求理”的理论体系构建和“致用”服务国家安全实践方面的研究同样重要,二者应兼顾思考。从学科理论体系建设层面探讨国家安全学学科建设内在逻辑,既能为该学科的未来建设发展提供参考,也能给国家安全学提供新的理论契机。[结果/结论]具体而言包括分析该学科建构的理论基础,基于现实的基本面向和理论与实践结合层面的发展方向的深入思考,在此基础上指明了国家安全学科领域的相关研究既应立足本土,也需有全球视野,为国家治理体系和治理能力现代化承担责任。     

论高等学历信号的有效性

高等学历信号的有效性是指高等学历信号能否对能力不同的人进行有效甄别,而高等教育体制会对高等学历信号的有效性产生重要的影响。中国目前的高等教育体制使高等学历信号失效,失效后的高等学历信号对劳动力就业市场、对社会生产率、对个人的选择及对高等教育本身都产生了极为深远的影响。     

Mineralogy of the deep lower mantle in the presence of H2O

Understanding the mineralogy of the Earth''s interior is a prerequisite for unravelling the evolution and dynamics of our planet. Here, we conducted high pressure-temperature experiments mimicking the conditions of the deep lower mantle (DLM, 1800–2890 km in depth) and observed surprising mineralogical transformations in the presence of water. Ferropericlase, (Mg, Fe)O, which is the most abundant oxide mineral in Earth, reacts with H₂O to form a previously unknown (Mg, Fe)O₂H_x (x ≤ 1) phase. The (Mg, Fe)O₂H_x has a pyrite structure and it coexists with the dominant silicate phases, bridgmanite and post-perovskite. Depending on Mg content and geotherm temperatures, the transformation may occur at 1800 km for (Mg_0.6Fe_0.4)O or beyond 2300 km for (Mg_0.7Fe_0.3)O. The (Mg, Fe)O₂H_x is an oxygen excess phase that stores an excessive amount of oxygen beyond the charge balance of maximum cation valences (Mg²⁺, Fe³⁺ and H⁺). This important phase has a number of far-reaching implications including extreme redox inhomogeneity, deep-oxygen reservoirs in the DLM and an internal source for modulating oxygen in the atmosphere.     

自然科技类博物馆展览中“语境化阐释”与“传播有效性”的关系探讨

自然科技类博物馆面临着如何提高展览传播有效性的挑战。本文以语境化阐释为切入点,探讨了其理念、方法和实践在提升自然科技类博物馆传播有效性方面的作用和意义。语境化阐释是一种将展品置于其原生或新生的关联网络中,揭示展品与其相关的人、物、环境、事件等之间的联系,从而增强展品的信息量、意义和价值的阐释方法。本文分析语境化阐释的内涵、机制、目标及作用,并从历史演变和现实功能的视角,剖析“语境化阐释”助力“传播有效性”提升的内在逻辑。最后,提出基于“展品”语境网络的可视化编织、基于“知识”的跨语境对话与跨视角重构以及基于“受众”的分众化语境化阐释系统助力路径。     

"跑米"血泪记

我是江湾人. "虬江十八湾,弯弯到江湾."江湾是以虬江而得名的.江湾北通吴淞、宝山,南连虹口、闸北等地,是兵家必争之地,故屡遭兵灾.尤其是民国21年(1932年)"一·二八"和民国26年(1937年)的"八·一三"日军侵略战争,江湾均首当其冲,大部分房屋被毁.我家房屋也先后被日寇烧掉过两次,深受其害.     

Molecular design revitalizes the low-cost PTV-polymer for highly efficient organic solar cells

Developing photovoltaic materials with simple chemical structures and easy synthesis still remains a major challenge in the industrialization process of organic solar cells (OSCs). Herein, an ester substituted poly(thiophene vinylene) derivative, PTVT-T, was designed and synthesized in very few steps by adopting commercially available raw materials. The ester groups on the thiophene units enable PTVT-T to have a planar and stable conformation. Moreover, PTVT-T presents a wide absorption band and strong aggregation effect in solution, which are the key characteristics needed to realize high performance in non-fullerene-acceptor (NFA)-based OSCs. We then prepared OSCs by blending PTVT-T with three representative fullerene- and NF-based acceptors, PC₇₁BM, IT-4F and BTP-eC9. It was found that PTVT-T can work well with all the acceptors, showing great potential to match new emerging NFAs. Particularly, a remarkable power conversion efficiency of 16.20% is achieved in a PTVT-T:BTP-eC9-based device, which is the highest value among the counterparts based on PTV derivatives. This work demonstrates that PTVT-T shows great potential for the future commercialization of OSCs.     

Coronavirus disease(COVID-19):The need to maintain regular physical activity while taking precautions

The on-going Coronavirus disease(COVID-19)outbreak in China has become the world's leading health headline and is causing major panic and public concerns.On January 30,2020,the World Health Organization(WHO)declared that the new coronavirus outbreak is a public health emergency of international concern.1 The virus has already had a direct impact on more than 10 million people in the city of Wuhan and has reached other parts of China as well,posing a health threat of unknown magnitude globally.As of February 8,2020,WHO reported 34,886 confirmed cases of COVID-19 globally,with 34,589 of them occurring in China(including 6101 severe cases and 723 deaths).A total of 288 other confirmed cases(with 1 death)have been reported in 24 countries,including Japan,Australia,Germany,and United States.2 However,these daily estimates are expected to rise even higher as reports from health authorities in China3 are gathered and near real-time updates of the Johns Hopkins virus dashboard are made 4 The outbreak has caused governments in various countries to take swift and protective measures.In China,these included putting cities on lockdown,5 implementing travel wamings/bans and cancellations,6 extending national holidays,and closing schools and postponing classes7.