用FDTD法分析小腿的电磁散射特性

研究了利用微波检测白血病及监测白血病治疗过程的有关理论和技术。用ＦＤＴＤ法分析了当微波源采用 ８００ ＭＨｚ的无限长均匀线电流源和电偶极子天线时，人体小腿上部电磁散射特性与骨髓癌变程度的关系。数值结果表明，当采用电偶极子天线作为微波源时，可以获得较佳的分辨率及检测灵敏度。     

论统一内外资企业所得税法的必要性

分析了内外资企业所得税法存在的诸多差异 ,指出了内外资企业所得税法并存的弊端 ,从而提出统一两个所得税法的设想 ,从不同侧面探讨了内外资企业所得税法统一的必要性。     

代工企业对外直接投资理论综述与研究

本文将新兴工业国家或地区及其外包生产企业作为独立的对外直接投资主体进行研究,提出代工企业对外直接投资动因研究问题.理论综述发现,现有主要对外直接投资理论体系中缺乏外包生产企业对外直接投资的专门理论或学说.通过对现有理论的缺陷分析,进一步提出了研究这个问题的基本假设和分析框架.     

Mixed two- and four-level fractional factorial split-plot designs with clear effects

Mixed-level designs have become widely used in the practical experiments. When the levels of some factors are difficult to be changed or controlled, fractional factorial split-plot (FFSP) designs are often used. It is highly to know when a mixed-level FFSP design with resolution III or IV has clear effects. This paper investigates the conditions of a resolution III or IV FFSP design with both two-level and four-level factors to have various clear factorial effects, including two types of main effects and three types of two-factor interaction components. The structures of such designs are shown and illustrated with examples.     

一类具有时滞的抛物系统解的渐近行为

本文对一类含有时滞的抛物偏泛函微分方程的渐近行为进行了讨论。分别就两种不同的边界条件，采用Ｌｉａｐｕｎｏｖ泛函及Ｌｐ—估计，获得了其解全局稳定、振动的若干简洁充分条件。     

企业流程再造的方法研究

企业流程再造是当今管理界的热点问题之一。针对目前在流程再造中缺少能指导、支持流程重新设计的方法和工具,本文提出一种流程再造的方法。通过规范构成流程的基本单位活动,按照一定的方法构建活动描述数据库,然后利用活动之间的相关性从数据库中搜索、回溯新流程的可行方案,并根据效用函数值得到最优设计方案,另外还可以根据活动之间的相似性寻找各流程的冗余活动,从而合并或删除从属于不同部门之间的相似流程。最后本文对构造支持该方法的决策支持系统进行了初步分析。     

从华裔美国文学看少数族裔文化的商品化

本文以华裔美国文学为例讨论了美国少数族裔文化的商品化问题。在资本主义条件下,现代文化整体都面临商品化的挑战,少数族裔文化商品化的问题在于商品审美化的潜在过程遮盖了民族间的不平等关系。物质形态是少数族裔从属于主流文化的形态,但同时也是少数族裔或者族裔认同和文化反抗的基础。在美国民主政治和自由市场制度之下,族裔个体具有一定的文化认同的自由,但作为商品消费主体的选择自由又以“去地域化”、“去民族化”为特征。     

天津市滨海新区海水淡化问题研究

一、引言 近年来,由于地表水短缺,滨海新区地下水开采量大幅超过可开采量,造成大面积地面沉陷,部分地区甚至出现海水倒灌现象,水质受到严重污染。淡水资源短缺已成为限制滨海新区发展的重要瓶颈之一。以高新技术为支柱的海水淡化产业,因其不仅可以补充淡水资源,而且能够充分利用海洋资源,降低海水淡化成本,受到世界各国的广泛重视。     

梁启超美学之“变”的现代性根源

梁启超美学从具有功利性的"文学救国"到强调审美非功利的"趣味主义",这种变化并非梁启超的"落伍"或者"善变",而是梁启超认识到中国社会现代性的实现并不是单纯科技物质的现代化,更重要的是现代人格的养成,所以他抛弃了自己前期的工具理性思想。但梁启超的这种"反科学主义"却建立在中国科学技术极端落后的现实之上,因此陷入了深刻的矛盾悖论之中。     

Retired Tibetan migrants’ adaptation experiences in Chengdu,China

Diverse types of mobility have emerged in contemporary China, among which consumption-led ethnic retired migrants have received little academic attention. This study addresses the seasonal mobility of retired Tibetan migrants who previously had careers in governmental and public sectors in Tibet. After retirement, they purchase second-home apartments in Chengdu for health and leisure reasons. Through semistructured interviews, nonparticipant observation, and the application of Schnell’s multidimensional model, this article analyzes the migration and adaptation experiences of retired Tibetan migrants in Chengdu. It is revealed that, physically, they reside in mixed communities and share activity spaces with the local people, and, socially, maintain their life-long social relationships and form new local relationships. They feel satisfied and comfortable in their new situation, maintain their primary identity as Tibetan, and gradually establish a sense of home in Chengdu. Their political privilege and governmental support in the destination also contribute to their positive migration and adaptation experiences.