oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 348 )

2018 ( 6846 )

2017 ( 7033 )

2016 ( 7556 )

Custom range...

Search Results: 1 - 10 of 305106 matches for " 王平平 "
All listed articles are free for downloading (OA Articles)
Page 1 /305106
Display every page Item
对《国际体育教育、体育活动与体育运动宪章》的解读与思考
Understanding and Reflection on International Charter of Physical Education, Physical Activity and Sport

平平,
- , 2016, DOI: 10.19582/j.cnki.11-3785/g8.2016.07.014
Abstract: 摘要:为及时传递和解读世界各国对于体育教育和体育运动形成的共识,增进国内学界对体育运动的理解,以《国际体育运动宪章》为研究对象,运用文献资料等方法,对1978年、1991年和2015年颁布的3个版本的《国际体育运动宪章》进行介绍,并对最新版本进行详细解读。研究分析并诠释了《国际体育运动宪章》传递的4个方面的核心内容:1)参与体育是一项基本人权;2)对体育安全风险的多重理解;3)对终身体育理念的持续强调;4)体育对社会发展的多样作用。此外,研究还认为:1)我国全面落实依法治国的背景与《国际体育运动宪章》的内在理念相契合,应将“人权”作为我国体育发展的一个重要逻辑起点;2)基于该起点,我国体育事业今后应当将提高残疾人的体育保障作为一项重要内容并放在突出位置;3)体育竞赛应当作为我国学校体育工作的中心,它既是贯彻和实现“终身体育”理念的重要路径又与目前国际上体育教育的主流理念相吻合。
Abstract: In order to transmit and read the consensus of physical education and sport in many countries and deepen domestic scholar’s understanding on sport, this paper introduced 3 versions’ International Charter of Physical Education, Physical Activity and Sport published in 1978, 1991, and 2015 and made a detailed explanation about the latest version by the method of literature review. The charter has four core contents: 1) Sports participation is one of the basic human rights; 2) Multiple understanding about sports safety risk; 3) Continually emphasis lifelong sports idea; 4) The diversified effects of sport on society. Suggestions: 1) The background of implementing governing the country by laws and intrinsic idea of the charter are matched with each other. Human rights should be an important logical starting point for China sports development; 2) Based on the starting point, China sport should improve disabled people’s sports and put it in a prominent position; 3) Sports competition should be the center of China school physical education which is an important way to realize lifelong sports idea and match present front international mainstream conception
未授权频段LTE-LAA与WiFi共存系统性能分析
Performance analysis for coexisting system of LTE-LAA and WiFi in unlicensed band

,平平,张源
- , 2017, DOI: 10.3969/j.issn.1001-0505.2017.03.002
Abstract: 为分析在未授权频段授权辅助接入(LAA)框架与无线局域网802.11系列标准(WiFi)共存的系统公平性问题,基于当前LAA框架的类型B(type B),建立了LAA系统与WiFi系统的共存模型.使用二维离散马尔可夫(Markov)模型对type B接入过程的‘说之前听’类型3(LBT Cat3)进行建模分析,进而建立共存模型.通过更改共存的设备数量和LAA 设备的LBT Cat3参数,分析LAA设备与WiFi设备在共存场景中的性能.根据分析模型创建相应仿真场景,以验证分析模型性能.分析计算结果与仿真计算结果表明,提出的分析模型在不同LAA与WiFi设备数量比和不同LBT Cat3参数情况下均能有效预测共存的LAA与WiFi设备成功占用信道比率.LAA系统适当调整LBT Cat3参数可以实现与WiFi系统公平共存和最大化信道利用率.
To analyze the problem in the unlicensed band, the fairness of coexisting licensed-assisted access(LAA)and 802.11 WLAN(WiFi)systems, based on the type B access procedure, this paper proposed a coexisting model for the LAA system and WiFi system. A discrete-time two-dimensional Markov chain was used to model and analyze the listen-before-talk category 3(LBT Cat3)in type B access procedure, and then a coexistence model was established. The performance of the LAA device and WiFi device in the coexistence scenario was analyzed by changing the quantity of the coexisting device and the LBT Cat3 parameters of the LAA device. The simulation scenario was setup according to the analysis model to verify the performance of the analysis model. The performance of the using LBT Cat3 LAA device and WiFi device in the coexisting scenario is analyzed. The analysis result and the simulation result show that the analyzing model is valid in predicting the successful airtime share of the LAA and WiFi device in case of the different coexisting LAA to WiFi device number ratios and different LBT Cat3 parameters. LAA system can appropriately adjust the parameters of LBT Cat3 to achieve the fairness coexistence with WiFi and maximize channel utilization
~(60)Coγ射线诱变黑曲霉菌株产植酸酶的研究
平平,,陶文沂
核农学报 , 2004,
Abstract: 研究了60Coγ射线对黑曲霉44792菌种产植酸酶的诱变效应,筛选出产植酸酶较高的A.niger4961菌株,并初步分析了其植酸酶的基本性质。
线性模型变点问题的贝叶斯分析
汤银才,平平,陈惠
应用概率统计 , 2015,
Abstract: 本文主要讨论了变点的先验分布为beta-binomial分布和Ibrahim等(2003)提出的幂型先验的条件下,有一个变点的线性模型的贝叶斯统计推断问题,并且我们假定变点两边的观测值的方差是相等的.我们得到变点、回归系数、共同方差的后要分布的显示表达式.本论文不仅把Ferrira(1975)论文从变点先验分布服从离散均匀分布推广到了更好描述变点的形状的beta-binomial分布,而且进一步将变点的先验分布推广到包含的历史信息的幂型先验.当变点的先验分布为beta-binomial分布和幂型先验时,模拟结果显示了贝叶斯方法具有更高的准确性.
数字化图书馆系统中的电子期刊文献参考咨询服务
平平,郑建丽,
图书情报工作 , 2001,
Abstract: ?探讨软件机器人、参考咨询员、电子咨询成本、电子咨询模式、电子期刊的传递手段等问题。
基于GIS技术与DRASTIC模型的民勤盆地地下水脆弱性评价 Groundwater vulnerability assessment in Minqin Basin based on DRASTIC model and GIS technology
建红,余启明,平平
- , 2015,
Abstract: 在研究区地下水资源评价的基础上,系统分析了其地质与水文地质条件,选取了对研究区地下水脆弱性影响最主要的7个因子,建立了DRASTIC地下水脆弱性评价模型.在利用GIS技术对各因子进行分级分析的基础上,对各因子分析结果进行加权叠加分析,得到了地下水脆弱性评价结果.结果表明:受地下水位埋深较浅、含水层介质较好、包气带中无厚层黏性土分布等的影响,地下水脆弱性总体较高,易遭受农业种植、生活污水及工业生产污水渗漏的污染
GaN相变及热力学性质的理论研究
Theoretical study on phase transformation and thermodynamic properties of GaN

韩旭,平平,李丹,王海燕
- , 2018,
Abstract: 利用基于密度泛函理论的第一原理方法研究了GaN的纤锌矿、闪锌矿、氯化钠三种结构的结构性质以及高压下GaN的相变. 利用焓相等原理得出GaN从闪锌矿结构到氯化钠结构的相变压强约为41.9 GPa,与实验值和他人理论计算值相符合. 通过准谐德拜模型得到了GaN的闪锌矿和氯化钠两种结构不同温度下热膨胀系数与压强的关系,不同温度下体积与压强的关系以及不同压强下热容与温度的关系.
Using the first-principles method based on density functional theory, we have studied the structural properties of GaN with wurtzite, zinc-blende and rocksalt structures and the phase transition of GaN under high pressure. According to the isoenthalpy principle, the phase transition pressure from zinc-blende structure to rocksalt structure of GaN is about 41.9GPa, which is consistent with the experimental results and other theoretical results. Employing the quasi-harmonic Debye mode, we have calculated the relationships between the thermal expansion coefficient and the pressure of GaN with zinc-blende structure and rocksalt structure at different temperatures. The relationships between the volume and pressure at different temperatures, and those between the heat capacity and temperature under different pressures are also obtained
博洛尼亚进程中德国体育学科硕士研究生培养特征解析与启示
Characteristics of German Sports Science Master Degree Candidate Training in Bologna Process and Its Inspirations

,平平,方千华
- , 2015, DOI: 10.19582/j.cnki.11-3785/g8.2015.07.016
Abstract: 摘要:德国兼具教育强国与体育强国双重身份,其单列体育学科的高等教育学科设置理念与我国颇为类似。为进一步拓宽我国硕士研究生培养的理论视野,提升人才培养质量,选取德国高等教育发展中心(CHE)体育学科评估排名前10名高校为研究对象,坚持一手资料收集,运用文献分析、数理统计、比较研究等方法从学院定位与学位设置、招生制度与研究方向设置、授课方式与考试形式、模块化课程体系、理论课与实践课的融合等5个方面详细论述了博洛尼亚进程中德国各高校体育学科硕士研究生的培养特征。结合我国当前体育学科硕士研究生培养现状从4个方面阐述了对我国的启示:1)打造学校自身特色,追求差异化培养方向;2)构建能力本位下的课程体系;3)注重课程设置与研究方向的契合;4)丰富授课与考试形式,注重语言表达能力训练。
Abstract: Germany has dual identity of both education and sport science. Its sports science setting as an independent discipline is similar to China. The purposes of this study were to further wide our theoretical vision for master degree candidate training and then improve talent education quality. Top 10 universities in the sports science discipline assessing of German Centre for Higher Education Development (CHE) were selected as objects, and their training characteristics in Bologna process from five aspects were analyzed by adhering to gather first-hand information and the methods of literature review, mathematical statistics, and comparative study, from five aspects which are college positioning and degree setting, enrollment system and research field, teaching method and examination form, modular curriculum system, and combination of theory courses and practice courses. Based on these and the present situation in China, we explained four inspirations to China. The four inspirations are: 1) building own characteristics, pursuing differentiation training direction; 2) constructing competency-based curriculum system; 3) emphasizing fitness between course design and research direction; 4) enriching teaching method and examination form, focusing on verbal ability training
肝硬化患者外周血IL-8及其mRNA表达
平平,,项桂菊,胡孝彬
中国公共卫生 , 2008, DOI: 10.11847/zgggws2008-24-02-39
Abstract: ?目的探讨肝硬化患者血清白细胞介素-8(IL-8)含量及外周血单个核细胞(PBMC)中IL-8mRNA表达。方法筛选典型HBV感染后肝硬化患者,以ELISA法检测血清IL-8水平;Real-timePCR检测PBMC中IL-8mRNA含量。结果肝硬化患者外周血IL-8及其mRNA水平分别为(431.39±97.39)pg/ml,1.1125±0.2024与正常对照组比较,差异有统计学意义(P<0.01,P<0.01)。而且病毒复制组表达水平高于非复制组(P<0.01,P<0.05),丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)升高者外周血IL-8及其mRNA均明显升高,与对照组比较差异有统计学意义(P<0.05,P<0.01)。结论肝硬化患者外周血IL-8及其mRNA表达增高,并与体内病毒复制水平、肝细胞损伤程度密切相关。IL-8在介导肝硬化进展中起重要作用。
山兰菌根真菌离体培养条件的研究
平平,玉娇,陈旭辉,曲波
北方园艺 , 2012,
Abstract: 通过分离、纯化、培养山兰菌根菌,设置温度、光照、碳源、氮源和pH值等培养条件进行单因素试验,研究山兰菌根菌在不同培养条件下生长状况及培养性状,并对数据进行方差分析。结果表明该山兰菌根菌在5~30℃都能生长,最适温度是20℃;在各种光照条件下均能生长,其中12h光照、12h黑暗条件下山兰菌根菌生长最好;适宜生长的pH5.0~6.0;在碳源方面对葡萄糖利用最好;在氮源方面对甘氨酸利用最好。?
Page 1 /305106
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.