论英语否定结构中的歧义现象

在含有否定结构的英语句中 ,如果是一个孤立的句子 ,往往会令读者觉得含有多种理解或者有多种意义。这就是在英语否定结构中常出现的歧义现象 ,这种否定结构即是英语歧异结构之一。了解这种结构和现象 ,就能知道这种结构的正确意义 ,从而避免歧义 ,避免理解或表达的错误     

国际法体系下南极生物勘探的法律规制研究

南极生物遗传资源具有极大的经济和应用价值,各国积极开展南极生物勘探活动和激烈的资源争夺。发达国家和发展中国家在南极遗传资源的法律属性、利用与保护等问题上持有不同的政治立场,并展开了激烈的国际争论。国际上并无专门的关于南极生物勘探及其遗传资源的法律文件,现有的国际法律制度对此均有所涉及,但在适用上具有一定的局限性。所以南极生物勘探及其遗传资源相关问题的解决不是一个国际文件就可解决的复杂问题,因此须扩展适用区域制度和公海自由原则,发挥联合国的宏观作用,扩展全球公共利益的范围,广泛应用人类共同遗产原则,并在国际法和南极条约体系的协调和融合下寻求解决的方法。     

预期收益最大化与“蚁族”现象

蚁族现象的本质是大学毕业生选择在大城市还是中小城镇就业的问题。从理性人假设的角度来看,"蚁族"现象的原因在于"蚁族"们为了获得更多的就业机会、更高的就业质量等经济收益,和更多的教育收益、消费收益、心理收益和健康收益等非经济收益,从而主动选择在大城市就业的结果。减少"蚁族"现象的思路在于提高大学毕业生收入、促进教育公平和均衡发展、重视发展中小城镇、引导大学毕业生到中小城镇就业。     

Non-parametric Analysis of Covariance – The Case of Inhomogeneous and Heteroscedastic Noise

Abstract.  The purpose of this paper was to propose a procedure for testing the equality of several regression curves f _i in non-parametric regression models when the noise is inhomogeneous and heteroscedastic, i.e. when the variances depend on the regressor and may vary between groups. The presented approach is very natural because it transfers the maximum likelihood statistic from a heteroscedastic one-way analysis of variance to the context of non-parametric regression. The maximum likelihood estimators will be replaced by kernel estimators of the regression functions f _i . It is shown that the asymptotic distribution of the obtained test-statistic is nuisance parameter free. Asymptotic efficiency is compared with a test of Dette & Neumeyer [Annals of Statistics (2001) Vol. 29, 1361–1400] and it is shown that the new test is asymptotically uniformly more powerful. For practical purposes, a bootstrap variant is suggested. In a simulation study, level and power of this test will be briefly investigated and compared with other procedures. In summary, our theoretical findings are supported by this study. Finally, a crop yield experiment is reanalysed.     

重新解读被当代文学史书写遗忘的名家精品——郭澄清现象论

郭澄清以自成一家、成就卓越的短篇小说和史诗性的《大刀记》而跻身中国当代文学著名作家行列。但是由于所谓“文革文学空白论”、重写文学史反而对郭澄清产生了某种遮蔽与误读，这就是“郭澄清现象”。通过对郭澄清小说的解读，可以发现其对中国当代小说史的独特贡献，认识“郭澄清现象”的文学史价值，恢复其历史的本真面貌。     

朝鲜战争中美国使用生物武器新说

由于种种原因,美国在朝鲜战争中是否使用生物武器,已成为历史之谜。近年来,随着各国档案的相继公布,解开这一谜团的时机业已成熟。通过对美国在朝鲜战争中使用生物武器的动机、条件、现实需求及国内环境的剖析,及对美国官方为掩盖事实真相而采取的措施和相关人员神秘死亡的具体案例的分析,充分证实美国在朝鲜战争中使用了生物武器。     

体育大众传播异化现象探析

采用文献资料、逻辑分析等方法,以体育传播学、异化理论为基础,对当代体育大众传播中的异化现象进行归类并分析其形成原因,最后提出建议,旨在为当前体育大众传播中的不良风气,回归体育传播本质提供参考资料.     

Managing Invasive Species in the Presence of Endogenous Technological Change with Uncertainty

This research incorporates the development and adoption of an induced technology under uncertainty into a conceptual dynamic model to more broadly examine efficient policies for mitigating invasive species infestations. We find that under optimal policy, marginal costs of adopting conventional control measures are equal to the sum of the marginal benefits from development and adoption of new technology, as well as the use of conventional control measures. This result implies that a resource allocation designed for controlling invasive species is not adequate when an induced technology is not considered. Our results also reveal that the shadow values associated with the probabilities of developing and then adopting an induced technology increase as the shadow values associated with the stock of an invasive species population increase.     

具有有限时滞的Lotka-Volterra方程的周期解分歧现象

本文研究方程其中，R，γ，α为正常数，我们给出方程组（*）的解出现周期解分歧现象的一个条件．     

Reverse Regression,Fairness, and Employment Discrimination

Possible salary discrimination can be studied by comparing mean salaries of, say, males and females, after statistical adjustment for differences in job qualifications. The adjustment is often made by regression, with salary as dependent variable, and job qualifications and sex as independent variables. One might also regress job qualifications on salary and sex, a procedure called reverse regression. Ideas about fairness as well as technical concepts are relevant to discrimination studies. There are two distinct aspects of fairness, one based on comparisons of salary and the other based on comparisons of qualifications. Both concepts are needed to evaluate fairness.