我国女子跳远运动员起跳技术的运动学分析

选择目前我国优秀女子跳远运动员的起跳动作作为研究范围,通过运动图像解析系统对在比赛现场得到的相关运动学参数进行了分析.试图找出目前我国女子跳远与世界水平之间的差距,为我国女子跳远运动训练提供参考和依据.分析结果表明,我国女子跳远运动员起跳技术比较成熟,但起跳缓冲技术较差,起跳时间高于世界优秀运动员.     

奇联共欣赏 探骊得真珠——兼谈董味甘先生对重庆江津钟云舫长联的解读

清代重庆江津诗人钟云舫长达1612字的巨幅长联是目前国内发现的最长对联,气势恢弘,名扬四海,思想内容睿智深厚,艺术手法变化多姿,折射出浓郁的巴渝民俗文化与地域风情。联主神与物游,紧扣临江城楼周围景观及江津所处地域特色着笔,巧妙地以情驭理,借景抒情;立意高远,通过遥想巴蜀俊杰,来展现满腔的奇思异想;联中取自巴渝的传说,恰到好处地表露心迹。董味甘先生立足于文本对前代评点进行了再评点,其解读思考慎密、分析透彻,在综合比较、客观纠误、批判前注、另立新说诸方面用力甚勤,他视野开阔,旁征博引,熠熠生辉,自成一家,显示出深厚的学养和严谨的治学态度,也为激发后人对楹联的热爱和追求,做出了难得的贡献。     

执政党与宗教——兼论中国化马克思主义宗教观

中国化马克思主义宗教观,特别是"适应观"的重要思想是中国共产党对马列主义宗教观发展创新的科学界定,是中国共产党三代领导集体智慧的结晶.对宗教二重性的科学剖析是马克思主义者在长期的实践过程中得出的真理.正确认识宗教、妥善处理宗教问题是加强党的执政能力建设所面临的重要课题.     

First‐order bias correction for fractionally integrated time series

Most of the long memory estimators for stationary fractionally integrated time series models are known to experience non‐negligible bias in small and finite samples. Simple moment estimators are also vulnerable to such bias, but can easily be corrected. In this article, the authors propose bias reduction methods for a lag‐one sample autocorrelation‐based moment estimator. In order to reduce the bias of the moment estimator, the authors explicitly obtain the exact bias of lag‐one sample autocorrelation up to the order n⁻¹. An example where the exact first‐order bias can be noticeably more accurate than its asymptotic counterpart, even for large samples, is presented. The authors show via a simulation study that the proposed methods are promising and effective in reducing the bias of the moment estimator with minimal variance inflation. The proposed methods are applied to the northern hemisphere data. The Canadian Journal of Statistics 37: 476–493; 2009 © 2009 Statistical Society of Canada     

论新闻计算句子长短的句子标准

新闻语体的句子应该比其他语体的句子短，这是由新闻的易读性决定的。但是目前的一些新闻语言研究中，统计出的句子比其他语体的句子还要长几倍。一些新闻语言研究中同时以单句和复句为单位。单句和复句在语法结构上不是同一层级的语言单位，同时作为计算单位，是违反逻辑的。语法系统中，小句是基本的句子，是传递信息的基本单位。新闻语言研究中也应以小句为计算单位。     

类矩形双肢钝体涡致振动和气动抑振机理

针对具有类矩形双肢钝体断面拱肋的大跨度拱桥在风洞试验过程易出现大幅涡激振动问题，沿拱肋模型表面进行动态风压同步测量及基于POD算法的本征气动力荷载分布模式分解，获得了涡振发生时对于周期性涡激力具有最大贡献的气动力荷载作用位置，初步揭示出此类断面涡激动发生时的局部气动力荷载作用机制。以上海卢浦大桥和肇庆西江特大桥此类具有双肢钝体断面拱桥为工程实例，结合涡激气动力沿拱肋周向时空气分布特征，提出并以二维悬吊节段模型风洞试验验证了拱肋断面多种有针对性的气动控制措施；结合实际桥梁拱肋的三维空间效应，利用全桥气弹模型     

The Role of the Social Worker in Long-Term Care

Abstract

Making use of a formulation by Rosalie Kane of the ingredients necessary to “a good life” for residents of homes for the aged and other long term care facilities, the role of the social worker in insuring the presence of these ingredients is discussed. Included is an analysis of the responsibilities and tasks of the social worker which must be carried and fulfilled in order that social workers make appropriate contributions to “the good life.”     

Statistical properties of detrended fluctuation analysis

The main goal of this work is to consider the detrended fluctuation analysis (DFA), proposed by Peng et al. [Mosaic organization of DNA nucleotides, Phys. Rev. E. 49(5) (1994), 1685–1689]. This is a well-known method for analysing the long-range dependence in non-stationary time series. Here we describe the DFA method and we prove its consistency and its exact distribution, based on the usual i.i.d. assumption, as an estimator for the fractional parameter d. In the literature it is well established that the nucleotide sequences present long-range dependence property. In this work, we analyse the long dependence property in view of the autoregressive moving average fractionally integrated ARFIMA(p, d, q) processes through the analysis of four nucleotide sequences. For estimating the fractional parameter d we consider the semiparametric regression method based on the periodogram function, in both classical and robust versions; the semiparametric R/S(n) method, proposed by Hurst [Long term storage in reservoirs, Trans. Am. Soc. Civil Eng. 116 (1986), 770–779] and the maximum likelihood method (see [R. Fox and M.S. Taqqu, Large-sample properties of parameter estimates for strongly dependent stationary Gaussian time series, Ann. Statist. 14 (1986), 517–532]), by considering the approximation suggested by Whittle [Hypothesis Testing in Time Series Analysis (1953), Hafner, New York].     

Retirement Villages

No abstract available for this article.     

高等教育大众化的体制性障碍与政策选择

我国高等教育发展除受制于经济发展的影响外 ,其滞后还源于传统体制性弊端。要想尽快进入高等教育大众化发展阶段 ,必须扫除其体制性障碍。因此 ,应根据现有状况把高等教育大众化政策分为近期和中长期政策。其中最主要的是适应社会主义市场经济特征 ,加大高等教育体制改革力度 ,重视教育的生产力属性和产业属性 ,并按经济资源特性区分高等教育资源 ,按照不同资源给予不同拨款方式 ,以实现高等教育资源的最佳配置