On sequential closed testing dose groups with a control

Methods for a sequential test of a dose-response effect in pre-clinical studies are investigated. The objective of the test procedure is to compare several dose groups with a zero-dose control. The sequential testing is conducted within a closed family of one-sided tests. The procedures investigated are based on a monotonicity assumption. These closed procedures strongly control the familywise error rate while providing information about the shape of the dose-responce relationship. Performance of sequential testing procedures are compared via a Monte Carlo simulation study. We illustrae the procedures by application to a real data set.     

Communication and information exchange among SMEs and their local environment

Abstract

In this article the results from a Swedish pilot study in the project Arena for Sustainable Innovative Development of small and medium-sized enterprises is presented. The project in a whole aims to create and test a model for collaboration and sustainable development among small- and medium-sized enterprises (SMEs) in local areas. The research question in this article is delimited to issues concerning use of ICT, information exchange and communication among the interested parties. The pilot study was accomplished in a qualitative and explorative way with semi-structured interviews. As a result of the study some questions are identified as urgent to further investigate.     

跨文化意识的培养：问题与对策

在外语教学活动中，有效地培养学生的跨文化意识，增强学生的跨文化交际能力，既是教育工作者的历史使命，也是外语教学改革的一项重大课题。探索在外语教学中培养学生跨文化意识的主要途径，很有现实意义。     

Intimate Violence in Lesbian Relationships

This paper describes the findings of a survey of 1109 lesbians who attended the Women's Music Festival held in Michigan in carly August 1985. The primary objectives of the study were to document the incidence of domestic violence in a non-random sample of lesbian relationships; to identify and describe the types of domestic violence experienced and/or perpetrated; and to ascertain thc availability and accessibility of community helping resources to survivors and perpetrators after an abusive episode. Comparisons with domestic violence in heterosexual relationships are also made, followed by a discussion on the research and practice implications of the findings.     

外商直接投资在中国经营方式变迁的新制度经济学分析

通过回顾外商直接投资在中国经营方式的变迁,认为经营方式的独资化趋势是一种自上而下以渐进式发生的强制性制度变迁,是在中国政府政策引导下的有微观主体自愿参与的制度变迁。运用新制度经济学的研究方法,通过对谈判结构和交易成本的分析,揭示了这一变迁的原因在于：合营企业和合作企业与外资企业在设立与运营过程中由于谈判结构的不同,而使后者在产权保护以及协议执行的成本更低,从而导致了外商直接投资在中国的独资化趋势。认为中国政府应出台政策提高利用外资的质量和水平,以降低＂独资化＂带来的负面影响。     

气藏水平井连续携液理论与实验

在气藏水平井中随着生产管柱倾斜角度的变化，井筒内液体的重力作用会发生改变，从而引起气液两相流型的变化。以产气为主的气井井筒内液体主要以液膜、液滴的形式出现，由此出现了液滴模型与液膜模型两种解释积液的理论。从这两种携液理论出发，考虑生产管柱倾斜角度的影响，对倾斜管内液滴、液膜进行受力分析，推导出了随管柱倾斜角度变化的连续携液临界流速的计算式，使之适用于水平井连续携液临界流量的计算。设计制作了水平气井连续携液实验装置并进行了实验研究，观测气藏水平井中气水两相运动与流型变化情况并测试其临界携液气量，结果表明，气藏水平井中水平井段的液体以液膜携带为主，但直井段中越接近井口，越以液滴携带为主，液滴模型也能适用于计算气藏水平井的连续携液临界流速。     

浅议英语学习中的文化差异

东西方文化存在着很大的差异,对西方文化不了解,势必造成英语学习的障碍乃至交际的失误。     

在中国-东盟架构下的中国西南地区外语教育制度思考

本文归纳了东盟国家语言的概况,分析了东盟国家语言与中国西南地区民族语言的关系,结合在中国—东盟自由贸易区架构下中国西南地区外语人才的需求特点,指出了现行外语教育制度给当今社会特别是给西南地区带来的弊端,最后对外语教育制度提出了自愿化、专业化、基础化、区域化、激励化的系统改革构想,并从逻辑学、社会学、民族学、法学以及国际比较等角度进行了论证。     

加大对外开放:边疆民族地区实施第二次创业的战略选择--对延边朝鲜族自治州振兴老工业基地实施第二次创业的思考

本文从延边朝鲜族自治州所处的独特的地理、人文因素以及延边州的经济发展状况出发,论述延边经济发展尤其是延边州振兴老工业基地、实施第二次创业中加大对外开放,发展外向型经济的必要性和存在的问题及措施.     

朝鲜族人口自然增长率下降对发展的影响

本文分析了朝鲜族人口减少的主要原因及负面影响,并提出了解决的对策.