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体育产业结构的几个理论问题探讨

天津体育学院学报 2004年第2期19卷 39-41页

作者：林玲彭连清赣南师范学院体育系赣州341000 华南师范大学经济管理学院广州510631

体育产业在我国正悄然成为新兴的产业门类,引起人们的广泛讨论。通过对体育产业理论和实践发展现状的综合分析,从产业经济学的视角,提出了体育产业结构的概念并明确其涵义,阐述了体育产业结构的基本形态,并对体育产业结构国别差异的原... 详细信息

体育产业在我国正悄然成为新兴的产业门类,引起人们的广泛讨论。通过对体育产业理论和实践发展现状的综合分析,从产业经济学的视角,提出了体育产业结构的概念并明确其涵义,阐述了体育产业结构的基本形态,并对体育产业结构国别差异的原因进行了探讨。

关键词：体育产业结构涵义基本结构形态国别差异

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公民教育教什么

教育发展研究 2011年第10期31卷 30-35,40页

作者：袁征华南师范大学教育科学学院教授博士生导师广州510631

公民教育研究是一个综合学科。如果从伦理、政治和法学的角度观察,确定公民教育的内容是相当复杂的问题。布瑞格豪斯揭示了公民教育面临的一个两难问题,它给真正希望得到人民支持的国家和认真的学者带来严峻挑战。本文讨论这个难题和它... 详细信息

公民教育研究是一个综合学科。如果从伦理、政治和法学的角度观察,确定公民教育的内容是相当复杂的问题。布瑞格豪斯揭示了公民教育面临的一个两难问题,它给真正希望得到人民支持的国家和认真的学者带来严峻挑战。本文讨论这个难题和它的解决方案,我们应该在公民教育内部,而不是在公民教育课程之外寻求解决办法,总之合理的公民教育必须既讲权利又讲义务。

关键词：公民教育课程设计公民权利公民义务

AlGaInP四元系材料渐变异质结及其在高亮度发光二级管器件中的应用

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物理学报 2003年第5期52卷 1264-1271页

作者：刘鲁范广涵廖常俊曹明德陈贵楚陈练辉华南师范大学信息光电子科技学院金属有机化合物气相沉积实验室广州510631 华南师范大学信息光电子科技学院量子电子研究所广州510631

引入渐变理论 ,通过建立AlGaInP四元系材料渐变异质结能带简单模型 ,分析在渐变长度相同、不同渐变方式下导带边的情况 .分析不同掺杂浓度下 ,渐变区长度变化对势垒尖峰值和n区电势能之间差值的影响 .讨论了渐变方式引入高亮度发光二极... 详细信息

引入渐变理论 ,通过建立AlGaInP四元系材料渐变异质结能带简单模型 ,分析在渐变长度相同、不同渐变方式下导带边的情况 .分析不同掺杂浓度下 ,渐变区长度变化对势垒尖峰值和n区电势能之间差值的影响 .讨论了渐变方式引入高亮度发光二极管 (HB LED)

关键词： AlGaInP 镓铝铟磷四元系材料渐变异质结高亮度发光二极管 HB-LED 半导体材料发光效率

Magnetic-field-assisted triboelectric nanogenerator for harvesting multi-directional wave energy

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Nano Research 2024年第8期17卷 7144-7152页

作者： Mengru Ding Jianlong Wang Da Zhao Hengyu li Xiaojun Cheng Jianming wen Zhong lin Wang Tinghai Cheng Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China school of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China guangzhou Institute of Blue Energy Guangzhou 510555China College of Engineering Zhejiang Normal UniversityJinhua 321004China school of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332-0245USA

Ocean wave energy is a significant and promising source of renewable ***,the energy harvesting is challenging due to the multi-directional nature of *** paper proposes a magnetic-field-assisted triboelectric nanogenerator(MFATENG)for harvesting multi-directional wave *** incorporating a magnetic field,the planar motion of the pendulum is converted into spatial motion,increasing the triggering of multilayered TENG(M-TENG)and enhancing the output energy of the *** results demonstrate that the output energy of the MFA-TENG is increased by 73%by utilizing the magnetic ***,a spring model based on the origami-structured M-TENG is established to analyze the effect of different equivalent stiffnesses on the performance of the M-TENG,aiming to obtain optimal output *** results showcase the impressive output performance of the M-TENG,generating outputs of 2.0 V,18μA,and 2.5 ***,the proposed MFA-TENG effectively harvests multi-directional wave energy under water-wave driven *** study significantly enhances the ability of the MFA-TENG to harvest multi-directional wave energy and presents a promising approach for self-powered marine monitoring in the future.

关键词： triboelectric nanogenerator magnetic-field-assisted spring model multi-directional wave energy

Risk factors for renal outcomes in children with antineutrophil cytoplasmic antibody-associated vasculitis:a nationwide retrospective study in china

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World Journal of Pediatrics 2024年第5期20卷 506-516页

作者： li-wen Tan Jun-li Wan Chun-Hua Zhu Hong Xu Zheng-Kun Xia li-Zhi Chen Xiao-Chuan Wu Fang Wang Xiao-Rong liu Cheng-Guang Zhao Xiao-Zhong li Jian-Hua Mao Xiao-wen Wang wen-Yan Huang Yu-Hong li Jian-Jiang Zhang Shi-Pin Feng Jun Yang Jiao-Jiao liu Chun-lin Gao li-Ping Rong Lan-Jun Shuai Ke Xu He-Jia Zhang Qiu li Ai-Hua Zhang Mo Wang Department of Nephrology Children’s Hospital of Chongqing Medical UniversityZhongshan 2nd Rd.136Chongqing400014China Ministry of Education Key Laboratory of Child Development and Disorders National Clinical Research Center for Child Health and DisordersChina International Science and Technology Cooperation Base of Child Development and Critical DisordersChildren’s Hospital of Chongqing Medical UniversityChongqingChina Chongqing Key Laboratory of Pediatrics Children’s Hospital of Chongqing Medical UniversityChongqingChina Department of Nephrology Children’s Hospital of Nanjing Medical University72 Guangzhou RoadNanjing210008China Department of Nephrology Children’s Hospital of Fudan UniversityNational Paediatric Medical Center of ChinaShanghaiChina Department of Pediatrics Jinling HospitalNanjing Medical UniversityNanjingChina Department of Pediatrics Jinling HospitalThe First School of Clinical MedicineSouthern Medical UniversityNanjingChina Department of Pediatrics Jinling HospitalMedical School of Nanjing UniversityNanjingChina Department of Pediatric Nephrology and Rheumatology The First Affiliated Hospital of Sun Yat-Sen UniversityGuangzhouChina Department of Pediatrics The Second Xiangya Hospital of Central South UniversityChangshaChina Department of Pediatrics Peking University First HospitalBeijingChina Department of Nephrology Beijing Children’s HospitalCapital Medical UniversityBeijing100045China National Center for Children’s Health BeijingChina Department of Pediatrics Shengjing Hospital of China Medical UniversityShenyangChina Department of Nephrology and Immunology Children’s Hospital of Soochow UniversitySuzhouChina Department of Nephrology Children HospitalZhejiang University School of MedicineHangzhouChina Department of Nephrology Wuhan Children’s Hospital(Wuhan Maternal and Child Healthcare Hospital)Tongji Medical CollegeHuazhong University of Science&TechnologyWuhanChina Department of Nephrology and Rheumatology Shanghai Children’s HospitalSchool

Background Pediatric antineutrophil cytoplasmic antibody-associated vasculitis(AAV)is a life-threatening systemic vasculitis featured by liability to renal ***,there are few studies on the risk factors and predictive models for renal outcomes of AAV in *** Data from 179 AAV children in multiple centers between January 2.12.and March 2.2. were collected *** risk factors and predictive model of end-stage renal disease(ESRD)in AAV were *** Renal involvement was the most typical manifestation(95.5%),and the crescent was the predominant pathological lesion(84.9%).The estimated glomerular filtration rate(eGFR)was evaluated in 114 patients,of whom 59.6%developed ESRD,and the median time to ESRD was 3.2. *** eGFR[P=0.006,odds ratio(OR)=0.955,95%confidence interval(CI)=0.92.–0.987]and the percentages of global glomerulosclerosis(pGGS;P=0.018,OR=1.060,95%CI=1.010–1.112.were independent risk factors for ESRD of renal *** on the pGGS and eGFR at renal biopsy,we developed three risk grades of ESRD and one predictive *** Kaplan‒Meier curve indicated that renal outcomes were significantly different in different risk grades(Pline,the predictive model had higher accuracy(0.86 versus 0.58,P2.in external *** Renal involvement is the most common manifestation of pediatric AAV in china,of which more than half deteriorates into *** predictive model based on eGFR at renal biopsy and the pGGS may be stable and accurate in speculating the risk of ESRD in AAV children.

关键词： Antineutrophil cytoplasmic antibody End-stage renal disease Glomerulonephritis Pediatric nephrology Vasculitis

美国印弟安那州小班改革“黄金时间计划”述评——关于小班改革“是什么”和“不是什么”的探讨

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外国教育研究 2009年第2期36卷 73-77页

作者：陶青华南师范大学教育科学学院广东广州510631

始于1984年的美国印弟安那州小班改革"黄金时间计划",年耗资达数千万,却极少被人问津。其根本原因在于它不是纯粹的小班改革而是生师比改革。与该案例的内容、模式等相对照可以发现,我国大部分地区的"小班改革"也不是严格意义上的小班改... 详细信息

始于1984年的美国印弟安那州小班改革"黄金时间计划",年耗资达数千万,却极少被人问津。其根本原因在于它不是纯粹的小班改革而是生师比改革。与该案例的内容、模式等相对照可以发现,我国大部分地区的"小班改革"也不是严格意义上的小班改革,亦属生师比改革。同时也说明,我国小班改革中使用的"教师协同教学"等小班配置形式的有效性有待进一步探讨。

关键词：美国印弟安那州小班改革 “黄金时间计划” 生师比

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与零假设检验有关的统计分析流程

心理科学 2011年第1期34卷 230-234页

作者：吴艳温忠麟华南师范大学心理应用研究中心广州510631 香港考试及评核局香港

人们熟知的零假设显著性检验,受到一次次质疑与辩护,地位并未动摇,报告检验结果仍然是统计分析的习惯做法。不过,其局限性促使研究者探寻更多的统计方法如区间估计、效应量分析、检验力分析等。本文先介绍假设检验与置信区间的关系;然... 详细信息

人们熟知的零假设显著性检验,受到一次次质疑与辩护,地位并未动摇,报告检验结果仍然是统计分析的习惯做法。不过,其局限性促使研究者探寻更多的统计方法如区间估计、效应量分析、检验力分析等。本文先介绍假设检验与置信区间的关系;然后讨论检验力与两类错误率和效应量的关系;最后在理顺上述统计方法的基础上,提供一个可操作的统计分析流程。

关键词：零假设检验检验力分析效应量置信区间

TWIN POSITIVE PERIODIC SOLUTIONS OF FUNCTIONAL DIFFERENTIAL EQUATIONS WITH INFINITE DELAY

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Annals of Differential Equations 2006年第3期22卷 356-359页

作者： Song Changxiu (school of Math. Sciences, south china normal university, {2. school of Applied Math., Guangdong university of Technology, guangzhou 510006)

In this paper, the author studies a class of nonlinear functional differential equation. By using a fixed point theorem in cones, sufficient conditions are established for the existence of twin positive periodic solut... 详细信息

关键词： functional differential equation positive periodic solutions cone fixed point theorem

NONOSCILLATION FOR SECOND ORDER IMPULSIVE DIFFERENTIAL EQUATION

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Annals of Differential Equations 2007年第2期23卷 159-164页

作者： li Tianshun Pang Yongqin No.2.Middle school Zhanjiang 524006 Guangdong Dept. of Math. South of China Normal University Guangzhou 510681

We prove nonoscillation results for a class of second order equation. The results generalize ones of Huang.

关键词： non-oscillation second order equation δ-function