浅谈发行体育彩票产生的双重效应

运用献资料的方法从正、负两方面探讨了我国发行体育彩票产生的效应。体育彩票的发行为我国体育事业带来了活力，但同时在发展过程中也带来了负效应。应该以利除弊，以保障体育彩票产业的健康发展。     

基于语义联想的中文图像搜索引擎——构想与实验*

在分析了目前主流中文图像搜索引擎研究和开发的优点和缺点基础上，结合实际开发经验，提出一个基于语义联想的中文图像搜索引擎的构想。在图像内容信息表示上充分利用相关的文本信息。系统通过分析用户的检索行为记录，自动发现词间关系，并用知识库的方式来组织和存储图像信息，达到语义联想的功能。     

近代竞技运动发轫于英国的背景解读

产业革命以后 ,随着机械在产业方面所占的比重急剧上升 ,有关人们身体的运动 ,在英国大众的生活中成了基本的要求。本文从英国民族心理特性、产业社会生活方式、政治制度和自然条件等角度 ,探索了奠定英国近代竞技运动发轫的历史轨迹     

愉悦课堂氛围激发学习兴趣

兴趣是影响学习效果的重要因素，在体育课堂教学中，教师要善于创设愉悦的课堂氛围，以激发学生的学习兴趣，让学生在乐中学，学中练，取得良好的学习效果。     

POLITICAL VIEWS OF THE RUSSIAN PEOPLE

The emerging political consciousness of the Russian people isanalyzed against a background of severe constraints in the Sovietera on public opinion formation. Problems in the transitionto democracy and representative government are reflected inheightened interest in politics, volatile levels of confidencein key political institutions, and deep uncertainty about thefuture in both economic and political terms.     

Environmentally-induced stone decay: the cumulative effects of crystallization–hydration cycles on a Lincolnshire oopelsparite limestone

An investigation has been undertaken at St Andrew’s church, Walpole St Andrew, Norfolk, to establish the underlying causes of the observed stone decay to the upper parts of the six stone piers. The stone decay was first recorded in the early 1930s. The salt-contaminated masonry within the church has been shown to undergo severe salt decay during the summer, with little damage occurring over the winter months. The south aisle piers have been shown to decay 2.5 times faster than the north aisle piers. Although crystallization–hydration cycles have been identified, the rate of decay is at its greatest when the cycling is relatively infrequent. This was not the expected trend. Furthermore, it has been shown that during extended periods where the ambient relative humidity is less than 75%, the rate of decay reaches a maximum. It is the length of this ‘drying’ period that apparently has the greatest influence on the rate of decay and could explain the significant difference in the rate of decay between the south and north aisle piers. The results have serious implications for passive conservation, where it is often recommended to lower the ambient relative humidity to well below the equilibrium relative humidity of the salt contaminant, to avoid crystallization–hydration cycles. Since, at the time of building, the church was situated on the coast, it is possible that the sodium chloride contamination occurred during the building process (1440–1520), particularly since the area was prone to sea-flooding at this time. Alternatively, the salt could have been applied as a treatment during the general restoration of 1897. Whatever the source of the salt, it seems likely that the ambient environment was changed by the insertion of a sealed floor in 1897, which could account for the onset of the salt decay.     

赛艇运动的项目特性及训练指导思想

通过对赛艇运动项目决定成绩的因素,如供能系统、专项素质、生理特性的分析,确定了赛艇运动的特性及规律,并据此特性科学地提出了该项目的训练指导思想.