西夏军队装备述论

西夏所处的时代,是我国古代冷兵器已得到高度发展,火药武器兴起但还处于早期的发展阶段。本文从战马、甲胄、兵器和指挥用具等四方面考察,认为西夏已经拥有冷兵器时代的高水平的军队装备,虽然其经济实力和科技水平不及宋、辽、金,但由于多种原因,彼此军队装备的水平是大体相当的。     

肉身化的思与诗

本文认为,长期受封建主义和理性主义压抑贬损的人类肉身是一种非常高贵的存在。它通过自己独特的肉身化思维,把整个世界人化。于是,世界具有了人的形体结构,情感愿望,生命追求。这个人化的世界实际是人肉身的诗意创造物。而整个的诗意创造活动本身,一方面展示了人的自然活力,另一方面又表现了人对自然的诗意驾驭力。这是人的肉身生命的诗意再生产,也是人作为万物灵长的资格证明,更是人诗意生存的基本表现形态。     

Characterizations based on conditional expectations

For given real functionsg andh, first we give necessary and sufficient conditions such that there exists a random variableX satisfying thatE(g(X)|X≥y)=h(y)r _x (y),∀y ∈ C _x , whereC _x andT _X are the support and the failure rate function ofX, respectively. These extend the results of Ruiz and Navarro (1994) and Ghitany et al. (1995). Next we investigate necessary and sufficient conditions such thath(y)=E(g(X)|X≥y), for a given functionh. Support for this research was provided in part by the National Science Council of the Republic of China, Grant No. NSC 86-2115-M-110-014 and NSC 88-2118-M-110-001     

Association between sexually explicit messages and sleep health among French sexual minority men

It has been demonstrated that sexual minority men (SMM) participate in sexting. While research has shown that engagement in the exchange of sexually explicit media is associated with poor health outcomes, no previous research has investigated its association with sleep health outcomes. This study sought to examine the association between sexually explicit media and sleep health among SMM, a population that suffers from poor sleep health. A popular geosocial networking application was used to recruit SMM individuals (N?=?580) in the Paris, France, metropolitan area. Multivariate analyses, adjusting for sociodemographics, were used to test the association between the frequency of sexually explicit messaging and three dimensions of sleep health: (1) sleep quality, (2) sleep duration, and (3) two aspects of sleep problems. In multivariate analyses, those who reported engaging in sexually explicit messaging more were more likely to report getting less than seven?hours of sleep (aRR = 1.24; 95% CI = 1.08, 1.43) compared with those who reported engaging in sexually explicit messaging less. No significant associations were found between sexting and sleep quality or reporting sleep problems. Sexually explicit messaging was associated with shorter sleep duration. Intervention targeted at individuals who sext could potentially improve sleep health outcomes.     

Inferences for a Partially Varying Coefficient Model With Endogenous Regressors

In this article, we propose a new class of semiparametric instrumental variable models with partially varying coefficients, in which the structural function has a partially linear form and the impact of endogenous structural variables can vary over different levels of some exogenous variables. We propose a three-step estimation procedure to estimate both functional and constant coefficients. The consistency and asymptotic normality of these proposed estimators are established. Moreover, a generalized F-test is developed to test whether the functional coefficients are of particular parametric forms with some underlying economic intuitions, and furthermore, the limiting distribution of the proposed generalized F-test statistic under the null hypothesis is established. Finally, we illustrate the finite sample performance of our approach with simulations and two real data examples in economics.     

人名外来词用字的性别特征刍议

人名外来词是外来词中比较特殊的一类,关于其用字研究过去往往是从事翻译研究的人所关注的.从语言文字应用的实际出发,结合社会语言学的研究视角,我们可以透析出人名外来词存在用字的性别特征.从某种角度说,人名外来词用字的性别特征是语言性别差异的一种表现.     

基于文化营销视角的城市古镇文化旅游品牌塑造研究——以广州沙湾古镇为例

随着我国旅游业的高速发展,旅游业竞争热点正从旅游资源开发向旅游产品开发以及旅游目的地品牌塑造这两个更高层次演变。城市古镇文化旅游日益成为一个旅游消费热点,针对这种趋势,本文以广州市番禺区沙湾古镇为例,从文化营销的视角,探讨了古镇文化旅游品牌塑造的理论与方法,分析了把地方文化资源转化为旅游目的地品牌核心价值的路径与方法,为城镇文化旅游开发提供决策依据。     

80后大学生理想、信念建构研究

80后大学生的种种社会表现已广泛引起社会的注意,他们的理想信念如何,关乎我国的社会发展和民族前途。因此了解他们的理想信念实际并探讨理想信念构建的对策是关乎国运的一件大事。     

中国经济转型期城镇少数民族教育收益率的实证研究

文章分别使用了OLS方法和分位回归技术,考察了1995—2007年间中国城镇少数民族教育收益率的总体水平及其长期变化趋势,并将之与汉族进行了比较,发现在经济转型期,中国城镇居民教育收益率总体上呈逐年上升趋势,少数民族与汉族之间的教育收益率没有显著差异。政策的力量与市场的力量有机结合、相互叠加,是转型时期中国城镇少数民族的地位并没有发生逆转的重要原因。与汉族相同,少数民族的教育收益率随着收入分位点提高而逐渐减小,即收入水平越高,教育收益率越低。     

河流健康与水安全思考

河流健康不是严格意义上的科学概念而是一种河流管理的评估工具。人类在开发利用流域水资源的过程中,由于保护不够或滥加利用,一些河流发生污染、断流现象,影响了河流的自然和社会功能,失去了河流的自身价值,危及河流的健康生命。维系河流的健康生命和水安全密切相关。河流污染是我国河流健康的最大威胁,治污是我国现阶段河流生态环境建设的首要任务,同时在水电工程建设中应强化对生态环境的监管。