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我国基础教育历次“减负”中体育的定位、作为与应为

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教学与管理 2024年第18期 45-52页

作者：张朋温州大学体育与健康学院浙江温州325000

在基础教育的减负历程阶段中体育分别被定位于“视为负担”“必选动作”“等同减负”“对冲减负”“减负利器”五种角色。体育所发挥的作用随着减负政策价值取向转变和治理思维转向由“被动发力”转变为“主动作为”,成为减负的必需品... 详细信息

在基础教育的减负历程阶段中体育分别被定位于“视为负担”“必选动作”“等同减负”“对冲减负”“减负利器”五种角色。体育所发挥的作用随着减负政策价值取向转变和治理思维转向由“被动发力”转变为“主动作为”,成为减负的必需品。现实实践中体育争抢时间为减负攻城略地;创新作业类型为减负化解矛盾,赢取共识;满足主体的教育需求压力,调适缓解教育焦虑。正确看待和合理利用体育助推减负,需形成体育课堂、课外活动、课后服务、家庭体育及社区体育等生活全场域体育参与的循环链条,挤压形成学业负担的时空,筑就强大的应负防火墙,走出一条“行之有我,行走于我”的理性、理想之路。

关键词： “减负” 体育教育 “双减” 课后服务

数字新质生产力与全球价值链嵌入:理论机制与实证检验

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当代经济研究 2024年第5期345卷 75-86,F0003页

作者：张彭东南大学经济管理学院南京210019 江苏师范大学外国语学院江苏徐州221000

以中国2010~2022年41类产业面板数据为基础,通过构建动态面板、两步中介模型,实证分析数字新质生产力对全球价值链嵌入的影响效应与作用机制,研究发现,数字新质生产力对全球价值链嵌入具有正向促进效应,且该结论经过工具变量检验、替换... 详细信息

以中国2010~2022年41类产业面板数据为基础,通过构建动态面板、两步中介模型,实证分析数字新质生产力对全球价值链嵌入的影响效应与作用机制,研究发现,数字新质生产力对全球价值链嵌入具有正向促进效应,且该结论经过工具变量检验、替换测算方式及数据缩尾处理在内的稳健性检验后依然成立。异质性检验发现,数字新质生产力对第一产业全球价值链嵌入无显著作用,对第二产业、第三产业全球价值链嵌入具有直接促进效应;相比内陆地区,数字新质生产力对沿海地区全球价值链嵌入的推动作用更为显著。进一步的作用机制检验发现,产业结构升级、生产要素配置在数字新质生产力对全球价值链嵌入的影响中具有中介效应。根据上述结论,提出统筹数字“基建+服务”战略布局、构建数字“攻坚+超前”创新生态、重塑数字“城市+产业”联动网络、建立健全“贸易+产权”政策支持机制,为实现全球价值链深度嵌入提供新思路。

关键词：数字新质生产力全球价值链嵌入产业结构升级生产要素配置

纪检监察学实践基础研究——兼论中国特色纪检监察实践体系及其运作机理

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河南社会科学 2024年第9期32卷 25-33页

作者：张鹏清华大学公共管理学院北京100084

实践体系是学科体系构建的深厚根基,学科体系是实践体系的系统总结和理论提升。纪检监察实践体系作为纪检监察学知识体系的孵化器、验证场和应用域,是构建纪检监察学学科体系、学术体系、话语体系及推动其持续发展的重要基石与强劲支撑... 详细信息

实践体系是学科体系构建的深厚根基,学科体系是实践体系的系统总结和理论提升。纪检监察实践体系作为纪检监察学知识体系的孵化器、验证场和应用域,是构建纪检监察学学科体系、学术体系、话语体系及推动其持续发展的重要基石与强劲支撑。中国特色纪检监察实践体系在党的百余年奋斗历程中孕育发展,在新时代党的自我革命、全面从严治党的伟大实践中成熟定型,是由价值目标、组织职能、专责监督、权力运行、监督控制等多个子系统构成的有机整体和完整系统。这些子系统既相互关联又各司其职,分别承担着战略规划、支撑架构、治理优化、执行落实、保障有力等关键功能定位,通过政治引领、制度支撑、规范执行的三位一体运作机理,实现了有序高效的循环运行,彰显出独特的中国特色。

关键词：纪检监察学实践基础实践体系运作机理

Dynamic characteristics of coal specimens with varying static preloading levels under low-frequency disturbance load

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Journal of Central South University 2024年第8期31卷 2644-2657页

作者： WEN Xiao-ze FENG Guo-rui GUO Jun YU Lu-yang QIAN Rui-peng zhang Jie zhang peng-fei FENG Wen-ming College of Mining Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Shanxi Province for Mine Rock Strata Control and Disaster Prevention Taiyuan University of TechnologyTaiyuan 030024China State Key Laboratory of Hydroelectric and Engineering Tsinghua UniversityBeijing 100084China

The mechanical properties of residual coal pillars under the influence of upward mining disturbances significantly affect the safety of residual mining activities on working *** study conducted low-frequency disturbance dynamic uniaxial compression tests on coal specimens using a self-developed dynamic-static load coupling electro-hydraulic servo system,and studied the strength evolutions,surface deformations,acoustic emission(AE)characteristic parameters,and the failure modes of coal specimens with different static preloading levels were *** disturbance damage is positively correlated with the coal specimen static preload ***,the cumulative AE count rates of the initial accelerated damage stage for the coal specimens with static preloading level of 60%and 70%of the uniaxial compressive strength(UCS)were 2.66 and 3.19 times that of the 50%UCS specimens,***,this behaviour manifested as a decrease in the compressive strength,and the mean strengths of the disturbance-damaged coal specimens with 60%and 70%of UCS static preloading decreased by 8.53%and 9.32%,respectively,compared to those of the specimens under pure static *** crack sources,such as the primary fissures,strongly control the dynamic response of the coal *** difference between the dynamic responses of the coal specimens and that of dense rocks is significant.

关键词： low-frequency disturbance dynamic response coal specimens static preloading level

The Design of GECAM Scientific Ground Segment

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Research in Astronomy and Astrophysics 2024年第10期24卷 1-10页

作者： Shijie Zheng Liming Song Xiang Ma Ping Wang Rui Qiao Yue Huang Xiaoyun Zhao Hongmei zhang Xiaobo Li Mingyu Ge Gang Chen Gongxing Sun Wenxi peng Ce Cai Wei Chen Yanqi Du Dongya Guo Bing Li Chaoyang Li Jianhui Li Qingxin Li Jing Liang Jiacong Liu Ge Ou Dongli Shi Jingyan Shi Xinying Song Jin Wang Wenshuai Wang Hong Wu Shuo Xiao Wangchen Xue Min Yao Jianying Ye Kai zhang peng zhang Xiaolu zhang Yanqiu zhang Guoying Zhao Shiyi Zhao Chao Zheng Shaolin Xiong Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Southwest Jiaotong University Chengdu 611756China Xiangtan University Changsha 411105China Qufu Normal University Qufu 273165China

The Gravitational wave burst high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)is a dedicated mission for monitoring high-energy *** we report the design of the GECAM Scientific Ground Segment(GSGS)in terms of the scientific requirements,including the architecture,the external interfaces,the main function,and *** from the analysis and verification results during the commissioning phase,the GSGS functions well and is able to monitor the status of the payloads,adjust the parameters,develop the scientific observation plans,generate the scientific data products,analyze the data,***,the on-orbit operation and scientific researches of GECAM are guaranteed.

关键词： gravitational waves gamma-rays:general telescopes

Brain Functional Network Changes in Patients with Poststroke Cognitive Impairment Following Acupuncture Therapy

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Health 2024年第9期16卷 856-871页

作者： Ran Wang Nian Liu Hao Xu peng zhang Xiaohua Huang Lin Yang Xiaoming zhang Science and Technology Innovation Center Interventional Medical Center Department of Radiology Affiliated Hospital of North Sichuan Medical College Nanchong China Department of Radiology Sichuan Province Orthopedic Hospital Chengdu China

Background: The mechanisms by which acupuncture affects poststroke cognitive impairment (PSCI) remain unclear. Objective: To investigate brain functional network (BFN) changes in patients with PSCI after acupuncture therapy. Methods: Twenty-two PSCI patients who underwent acupuncture therapy in our hospital were enrolled as research subjects. Another 14 people matched for age, sex, and education level were included in the normal control (HC) group. All the subjects underwent resting-state functional magnetic resonance imaging (rs-fMRI) scans;the PSCI patients underwent one scan before acupuncture therapy and another after. The network metric difference between PSCI patients and HCs was analyzed via the independent-sample t test, whereas the paired-sample t test was employed to analyze the network metric changes in PSCI patients before vs. after treatment. Results: Small-world network attributes were observed in both groups for sparsities between 0.1 and 0.28. Compared with the HC group, the PSCI group presented significantly lower values for the global topological properties (γ, Cp, and Eloc) of the brain;significantly greater values for the nodal attributes of betweenness centrality in the CUN. L and the HES. R, degree centrality in the SFGdor. L, PCG. L, IPL. L, and HES. R, and nodal local efficiency in the ORBsup. R, ORBsupmed. R, DCG. L, SMG. R, and TPOsup. L;and decreased degree centrality in the MFG. R, IFGoperc. R, and SOG. R. After treatment, PSCI patients presented increased degree centrality in the LING.L, LING.R, and IOG. L and nodal local efficiency in PHG. L, IOG. R, FFG. L, and the HES. L, and decreased betweenness centrality in the PCG. L and CUN. L, degree centrality in the ORBsupmed. R, and nodal local efficiency in ANG. R. Conclusion: Cognitive decline in PSCI patients may be related to BFN disorders;acupuncture therapy may modulate the topological properties of the BFNs of PSCI patients.

关键词： Cognitive Decline Poststroke Cognitive Impairment Functional Magnetic Resonance Imaging Brain Functional Network Graph Theoretical Analysis

10B-doped MCP detector developed for neutron resonance imaging at Back-n white neutron source

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Nuclear Science and Techniques 2024年第8期35卷 58-68页

作者： Qiang Li Li‑Jiao Wang Jing‑Yu Tang Xiang‑Biao Qiu Zhen Chen Mao‑Yuan Zhao Chang‑Jun Ning Kai Pan Wei Xu Tao Li Su‑peng Lu Han Yi Rui‑Rui Fan Chang‑Qing Feng Rong zhang Xiao‑Yang Sun Qi An Hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Yong‑Hao Chen Zeng‑Qi Cui An‑Chuan Fan Fan‑Zhen Feng Min‑Hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He Yong‑Cheng He Yang Hong Yi‑Wei Hu Han‑Xiong Huang Wei Jiang Zhi‑Jie Jiang Zheng‑Yao Jin Ling Kang Bo Li Gong Li Xiao Li Yang Li Jie Liu Rong Liu Shu‑Bin Liu Yi‑Na Liu Guang‑Yuan Luan Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan Zhao‑Hui Song Kang Sun Zhi‑Xin Tan Sheng‑Da Tang Jin‑Cheng Wang peng‑Cheng Wang Zhao‑Hui Wang Zhong‑Wei Wen Xiao‑Guang Wu Xuan Wu Cong Xia Yong‑Ji Yu Guo‑Hui zhang Hang‑Chang zhang Lin‑Hao zhang Qi‑Wei zhang Xian‑peng zhang Yu‑Liang zhang Yue zhang Zhi‑Yong zhang Zhi‑Hao Zhou Ke‑Jun Zhu Chong Zou Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China North Night Vision Science and Technology(Nanjing)Research Institute Co.Ltd Nanjing 211106China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China China Academy of Engineering Physics Institute of Nuclear Physics and ChemistryMianyang 621900China USTC archaeometry lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China China Shipbuilding Trading Co. LtdBeijing 100044China

Neutron resonance imaging(NRI)has recently emerged as an appealing technique for neutron *** complexity surpasses that of conventional transmission imaging,as it requires a high demand for both a neutron source and ***,the progression of NRI technology has been sluggish since its inception in the 1980s,particularly considering the limited studies analyzing the neutron energy range above *** white neutron source(Back-n)at the China Spallation Neutron Source(CSNS)provides favorable beam conditions for the development of the NRI technique over a wide neutron energy range from eV to ***-sensitive microchannel plates(MCP)have emerged as a cutting-edge tool in the field of neutron detection owing to their high temporal and spatial resolutions,high detection efficiency,and low *** this study,we report the development of a 10B-doped MCP detector,along with its associated electronics,data processing system,and NRI experiments at the *** heavy elements such as gold,silver,tungsten,and indium can be easily identified in the transmission images by their characteristic resonance peaks in the 1–100 eV energy range;the more difficult medium-weight elements such as iron,copper,and aluminum with resonance peaks in the 1–100 keV energy range can also be *** particular,results in the neutron energy range of dozens of keV(Aluminum)are reported here for the first time.

关键词： Neutron resonance imaging 10B doped MCP detector White neutron source Sample nuclide identification

TRPM8对间质性膀胱炎/膀胱疼痛综合征小鼠疼痛症状及神经元增殖的影响

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中华医学杂志 2024年第5期104卷 377-384页

作者：范博涵张鹏首都医科大学附属北京朝阳医院泌尿外科，北京100020

目的探讨瞬时受体电位M8(TRPM8)对间质性膀胱炎/膀胱疼痛综合征(IC/BPS)小鼠疼痛症状及神经元增殖的影响。方法将雌性野生型C57BL/6小鼠(8~10周龄)按随机数字表法分为对照组、IC/BPS模型组和IC/BPS模型+薄荷醇组(各6只);TRPM8基因敲除... 详细信息

目的探讨瞬时受体电位M8(TRPM8)对间质性膀胱炎/膀胱疼痛综合征(IC/BPS)小鼠疼痛症状及神经元增殖的影响。方法将雌性野生型C57BL/6小鼠(8~10周龄)按随机数字表法分为对照组、IC/BPS模型组和IC/BPS模型+薄荷醇组(各6只);TRPM8基因敲除小鼠随机分为TRPM8基因敲除组和TRPM8基因敲除模型组(各6只)。IC/BPS模型组、IC/BPS模型+薄荷醇组和TRPM8基因敲除模型组小鼠皮下注射尿路斑块蛋白65-84氨基酸残基(UPK3A65-84)多肽;IC/BPS模型+薄荷醇组继续注射薄荷醇。建模成功后,通过机械敏感性评估各组疼痛阈值的差异;膀胱壁注射细胞膜红色荧光探针(Dil),10 d后采集背根神经节(DRG)组织,利用Western蛋白印迹法和实时定量反转录聚合酶链反应(qRT-PCR)分别检测各组TRPM8和生长相关蛋白43(GAP43)的蛋白质和mRNA含量的差异;免疫荧光技术检测DRG组织中TRPM8表达与GAP43或Dil的分布情况。分析TRPM8与IC/BPS小鼠疼痛症状的关系及在神经元增殖中的作用。结果模型均构建成功。与对照组相比,IC/BPS模型组和IC/BPS模型+薄荷醇组小鼠的疼痛阈值均降低[分别为(8.50±1.22)、(5.50±1.05)比(11.67±2.16),均P<0.001]。与对照组相比,IC/BPS模型组和IC/BPS模型+薄荷醇组TRPM8的表达量均升高,而在TRPM8基因敲除组小鼠中TRPM8未表达[分别为(3.16±0.05)、(6.46±0.21)、0比(1.00±0.06),均P<0.001]。各组小鼠TRPM8蛋白表达量与mRNA表达趋势相同(P<0.001)。与对照组相比,IC/BPS模型组和IC/BPS模型+薄荷醇组DRG中GAP43 mRNA的表达增加,而TRPM8基因敲除模型组的表达下降(均P<0.001)。GAP43蛋白表达与mRNA表达趋势相同(P<0.001)。免疫荧光结果显示,与对照组相比,IC/BPS模型组和IC/BPS模型+薄荷醇组DRG中GAP43阳性神经元的数量增加,TRPM8基因敲除组下降(均P<0.001)。与对照组相比,IC/BPS组和IC/BPS模型+薄荷醇组DRG Dil阳性感觉神经元数量增加,而TRPM8基因敲除组下降(均P<0.001)。结论TRPM8可加剧IC/BPS小鼠的疼痛症状,其机制可能与诱导DRG水平的感觉神经增殖有关。

关键词：膀胱炎,间质性膀胱疼痛综合征瞬时受体电位M8 疼痛神经元作用生长相关蛋白43

三维整体式碳基光热转换材料在太阳能界面水蒸发中的应用研究进展

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新型炭材料（中英文） 2024年第2期39卷 240-253页

作者：韩悦张鹏赵晓明天津工业大学天津市先进纺织复合材料重点实验室天津市先进纤维与储能技术重点实验室纺织科学与工程学院天津300387 天津工业大学环境科学与工程学院天津300387

光热驱动的海水淡化技术被认为是最具潜力的解决全球淡水资源短缺难题的方法之一。其中,太阳能界面水蒸发(SVG)是海水淡化效率的核心过程,是保证光热海水淡化技术具有能量转换效率高、设备简单、成本效益高的关键。在所有高效SVG候选材... 详细信息

光热驱动的海水淡化技术被认为是最具潜力的解决全球淡水资源短缺难题的方法之一。其中,太阳能界面水蒸发(SVG)是海水淡化效率的核心过程,是保证光热海水淡化技术具有能量转换效率高、设备简单、成本效益高的关键。在所有高效SVG候选材料中,三维整体式碳基光热转换材料具有成本低、吸光效率高、结构可调性好、水蒸发速率高、无二次污染等优点。本综述首先简述了SVG的基本原理,以此为依据介绍了高效SVG材料的工作机制和设计原则,最后系统归纳和概述了4种不同类型的三维整体式碳基光热转换材料的研究进展。本综述为未来三维整体式碳基光热转换材料的构建及其在SVG领域的应用研究提供理论基础和研究指导。

关键词：光热转换三维整体材料碳质材料太阳能界面水蒸发海水淡化

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