美国对台军售应对策略的国际法分析

中美正式建交33年来,美国政府严重违背了其在“八·一七公报”中对中国的承诺,不断地对台湾出售武器,并且出售武器的性能和数量不断增加。从国际法角度分析美国对台军售：第一,美国对台军售严重违反了国际条约法的基本原则;第二,美国对台军售严重侵犯了中国的国家主权;第三,美国对台军售严重违反了不干涉内政的国际法基本原则。在此基础上,中国应该积极从国内层面和国际层面寻求国际法对策,从而敦促美国停止对台军售,促使中美关系良性发展。     

基于IPv6网络的数据采集系统设计

随着互联网的发展,数字化进程的不断加快,IPv6网络以其巨大的地址空间等特点已逐渐成为IP网的主流。设计了Ipv6网络管理系统的框架,提供了应用Zope平台的Python数据库进行数据采集,通过测试证明了该设计的可行性。     

家庭教养方式与幼儿心理健康的关系研究

采用儿童长处与困难问卷（Strength and Difficulties Questionnaire）、教养方式与维度问卷（Parenting Styles and Dimensions Questionnaire）及自编幼儿及家庭调查问卷,调查陕西省幼儿心理健康水平及其家庭教养方式的现状,继而探究家庭教养方式与幼儿心理健康状况之间的关联性,为预防和减少幼儿心理问题的发生,促进早期家庭养育指导提供实证依据。结果表明：家庭教养方式是幼儿心理健康水平的重要预测因素,专制型、放任型教养方式与幼儿心理风险增加相关,权威型教养方式与幼儿心理风险降低相关。建议：重视西部地区幼儿的心理健康发展,善用权威教养弱化专制教养,同时加强对家长教养方式的早期指导与干预。     

On a new type of sufficiency in undominated models

If a family of measures is dominated by a σ-finite measure, then the classical Fisher formulation of sufficiency and the pairwise sufficiency coincide. However, in undominated models, these definitions are essentially different. In particular, the Fisher formulation lacks the basic property: if a σ-algebra is sufficient, then also any larger σ-algebra ? is sufficient. We introduce a new definition of sufficiency, based on the concept of randomization, which has the property described above. We show that in the undominated case, our definition implies pairwise sufficiency and that the converse does not hold. If we assume that the underlying measurable space is a standard Borel space, then Fisher sufficiency implies our new formulation, and the converse implication does not hold.     

THE IMPACT OF IMMIGRATION ON THE STRUCTURE OF WAGES: THEORY AND EVIDENCE FROM BRITAIN

Immigration to the UK, particularly among more educated workers, has risen appreciably over the past 30 years and as such has raised labor supply. However studies of the impact of immigration have failed to find any significant effect on the wages of native‐born workers in the UK. This is potentially puzzling since there is evidence that changes in the supply of educated natives have had significant effects on their wages. Using a pooled time series of British cross‐sectional micro data on male wages and employment from the mid‐1970s to the mid‐2000s, this paper offers one possible resolution to this puzzle, namely that in the UK natives and foreign born workers are imperfect substitutes. We show that immigration has primarily reduced the wages of immigrants—and in particular of university educated immigrants—with little discernable effect on the wages of the native‐born.     

HPLC测定复方新斯的明眼用凝胶中维生素B6的含量和有关物质

目的建立复方新斯的明眼用凝胶中维生素B6与有关物质的含量测定方法。方法采用高效液相色谱法,Eclipse XDB-C18色谱柱(4.6 mm×150 mm,5 μm)。流动相：醋酸三乙胺溶液。检测波长：290 nm。结果线性范围为1～50 μg·mL-1,r=0.999 9(n=5)。低、中、高三个浓度回收率为(100.59±0.57)％,(100.97±0.38)％,(102.20±0.06)％。结论本方法简便快速、专属性好、重复性好、易操作。     

词汇衔接手段与大学英语六级写作

衔接手段是一个语篇连贯的重要条件,在语篇衔接和连贯理论的指导下,分析词汇衔接手段及其在大学英语六级写作中的运用,指出词汇衔接手段的熟练运用是非英语专业考生在大学英语六级考试写作中获得高分的重要条件,因此,在英语写作教学中,教师应注重对词汇衔接手段的介绍及其运用.     

基于α和β趋同检验的西北五省区产业结构趋同分析

选取西北五省区的25个行业为研究对象,基于中国工业经济年鉴的面板数据,将α趋同和β趋同两种检验方式引入运用到产业结构趋同检验当中,从具体的工业行业角度出发,测度2000年以来西北五省区产业结构的趋同效应,具体判断西北五省区各行业的产业结构关系。     

从纸笔测试到基于计算机的语言测试——评述大学英语四六级考试改革

20余年来,大学英语四六级考试从传统的纸笔考试模式（PBT）发展到了今天上机模式（CBT）的试行。它的变化对外语教学理论及方法的发展和趋势会有什么影响？它对大学英语教与学可能会带来什么反馈作用？本文在回顾大学英语四六级考试发展的基础上,对上述问题进行了探讨。     

大学英语四六级语篇阅读模式研究

当前的大学英语四六级阅读理解可以作为一种独立的语篇类型进行研究,运用语篇理论对其研究并提炼出相应的语篇模式,可以更好地促进《大学英语》的教学水平和学生英语阅读能力的提高。