英语语法教学的几个关键性关联问题的研究

语法教学是一个系统的问题,要教学好语法,有必要把语法教学与整个英语知识和英语技能的教学纳入一个整体进行考虑。     

新经济形势对人才的影响及经济欠发达地区应采取的对策

新经济形势催生了用人制度的变化，凸现了人力资源是第一资源的经济特征，唤醒了人才的自我意识，对人才产生了较大影响。同时，新经济也带来了一些负面的影响，在市场经济意识的作用下，人才更注重体现自己的价值。在当今人才缺乏的情况下，人才选择实现价值的过程，造成了激烈的人才竞争与争夺，导致了经济欠发达地区人才不稳定和严重匮乏。在分析新经济形势对人才正面影响和负面影响的基础上，提出经济欠发达的中西部地区应抓住西部大开发的政策契机，转变观念，拓宽用人的思路，加强与经济发达地区、人才聚集单位的合作与交流，创造条件，快速发展的对策。     

Image segmentation using voronoi polygons and MCMC, with application to muscle fibre images

We investigate a Bayesian method for the segmentation of muscle fibre images. The images are reasonably well approximated by a Dirichlet tessellation, and so we use a deformable template model based on Voronoi polygons to represent the segmented image. We consider various prior distributions for the parameters and suggest an appropriate likelihood. Following the Bayesian paradigm, the mathematical form for the posterior distribution is obtained (up to an integrating constant). We introduce a Metropolis-Hastings algorithm and a reversible jump Markov chain Monte Carlo algorithm (RJMCMC) for simulation from the posterior when the number of polygons is fixed or unknown. The particular moves in the RJMCMC algorithm are birth, death and position/colour changes of the point process which determines the location of the polygons. Segmentation of the true image was carried out using the estimated posterior mode and posterior mean. A simulation study is presented which is helpful for tuning the hyperparameters and to assess the accuracy. The algorithms work well on a real image of a muscle fibre cross-section image, and an additional parameter, which models the boundaries of the muscle fibres, is included in the final model.     

On the importance of being smooth

This paper makes the proposition that the only statistical analyses to achieve widespread popular use in statistical practice are those whose formulations are based on very smooth mathematical functions. The argument is made on an empirical basis, through examples. Given the truth of the proposition, the question ‘why should it be so?’ is intriguing, and any discussion has to be speculative. To aid that discussion, the paper starts with a list of statistical desiderata, with the view of seeing what properties are provided by underlying smoothness. This provides some rationale for the proposition. After that, the examples are considered. Methods that are widely used are listed, along with other methods which, despite impressive properties and possible early promise, have languished in the arena of practical application. Whatever the underlying causes may be, the proposition carries a worthwhile message for the formulation of new statistical methods, and for the adaptation of some of the old ones.     

F格上点式一致结构的刻画

证明了点式一致结构等价于点式完全正则性，构造了ＬＦ单位区间上一种自然的点式一致结构．     

Procrustes Shape Analysis of Planar Point Subsets

Consider a set of points in the plane randomly perturbed about a mean configuration by Gaussian errors. In this paper a Procrustes statistic based on the shapes of subsets of the points is studied, and its approximate distribution is found for small variations. We derive various properties of the distribution including the first two moments, a central limit result and a scaled χ²–-approximation. We concentrate on the independent isotropic Gaussian error case, although the results are valid for general covariance structures. We investigate triangle subsets in detail and in particular the situation where the population mean is regular (i.e. a Delaunay triangulation of the mean of the process is comprised of equilateral triangles of the same size). We examine the variance of the statistic for differently shaped regions and provide an asymptotic result for general shaped regions. The results are applied to an investigation of regularity in human muscle fibre cross-sections.     

《天问》写作年代和地点推测

《天问》的写作年代和地点问题,历来存在异说.如果结合屈原的经历、楚国当时的历史背景及《天问》的内容和形式等各方面作综合考察,可知屈原自被楚怀王疏远之后,即被贬为"三闾大夫"."三闾"乃邑名,在汉北;其间因汉北在秦、楚大战中为秦所占,屈原曾一度返回郢都并出使齐国.从齐国归国后屈原又回到汉北,由于受到稷下思想及《诗经》传统的影响,屈原便于楚怀王二十年(公元前310年),在汉北"三闾邑""书壁而问"创作了《天问》一诗.     

论个体主体活动的客观性

个体主体性集中体现为自觉能动性。个体主体是主体性与客观性的有机统一。客观性是主体性得以确证的前提和条件。个体主体活动的客观性表现为受制约性、合规律性、重复性。如果进一步分析个体主体活动的本质特征———自觉能动性三方面具体内容的话 ,便可以更深刻地理解这一点     

大学生思想发展规律及启示思考

大学生是国家的宝贵财富,是未来中国特色社会主义现代化建设的中流砥柱。国家的富强、社会的发展、民族的振兴离不开大学生。然而,随着改革的不断深入,生产力不断提高,物质生活水平发生巨大改变,大学生作为先进的知识分子,他们的思想也在随着社会经济政治文化的发展发生巨大的变化。因此,全面准确地把握大学生的思想状况发展规律,立足实践实事求是地分析当代大学生的思想状况的发展轨迹,对于研究制定当代大学生培养策略是十分必要的。     

新形势下坚持全面从严治党的规律性研究

从严治党是中国共产党在长期执政条件下保持组织肌体的先进性和纯洁性,赢取广大人民群众的执政信任,拥有执政资格的必然要求。新的历史条件下坚持全面从严治党较之以往有其自身的规律,主要表现在必须增强管党治党的责任意识、必须恪守政党治理的威严性、必须把握政党治理的系统性、必须坚持政党治理的长期性、必须维护制度治党的权威性以及必须提升思想建党的有效性等六个层面。深入研究、探索和遵循新形势下全面从严治党的规律,对于更好地加强和改善执政党自身建设,重塑政治形象,提升执政党的战斗力、凝聚力和向心力,进一步巩固党的执政地位具有重大的现实意义和深远价值。