人民币升值对我国对外贸易的影响分析

通过对人民币升值压力形成原因和性质逐一分析，认为人民币升值有其内在的必然性。进一步分析人民币升值对我国外贸的影响，得出结论：人民币升值有利于我国外贸的发展。     

关于对图最小覆盖算法的一点补充

通过对图的最小覆盖的理解，结合分析图的关联矩阵的特点，对文献[1]中求一图的最小覆盖集的算法作了一定的补充，使其更具有一般性和通用性。     

复杂尺寸链的计算机算法研究

本介绍复杂尺寸链的Method of Traces计算方法，针对这种传统手工计算方法的不足，提出了LU分析计算机算法的原理及实现方法，为CAPP提供了模块．     

拯救人类——评《骇客帝国1、2、3》

机器人的迅猛发展在有关科幻片中得到生动形象的表现《,骇客帝国1、2、3》是其中的代表。该片用尼奥与崔尼蒂形象展现崇高,唤醒人类对崇高人物的审美,讴歌自由、和平与爱情。同时也表现了一个引人深思的话题:与人类为敌的是机器军团,人类所依赖的救世主具有机器人的本领,难道人类的命运与未来掌握在机器人的手中?该系列片想象丰富,场面宏大,特技精良,音响效果一流。《骇客帝国》在科幻电影发展史上创造了一个高峰。     

基于Richards变换与Kuroda规则的射频滤波器设计

介绍了一种将集总参数转换为分布参数的Richards变换，利用双口网络演变而来的单位元件矩阵，论述了传输线结构之间的相互变换规则，即Kuroda规则。以这两种理论为基础设计出一种实用射频带通滤波器。     

No Association of Matrix Metalloproteinase [MMP]-2 (−735C > T) and Tissue Inhibitor of Metalloproteinase [TIMP]-2 (−418G > C) Gene Polymorphisms with Cervical Cancer Susceptibility

Matrix metalloproteinase [MMP]-2 and tissue inhibitor of metalloproteinase [TIMP]-2 are emerging as pivotal players in inflammation and carcinogenesis. The present study aimed to evaluate the role of MMP-2 (−735C > T) [rs 2285053] and TIMP-2 (−418G > C) [rs 8179090] gene polymorphisms in cervical cancer susceptibility in Indian women. We recruited 200 cervical cancer patients from North India and 200 unrelated, age-matched, cancer-free healthy female controls of similar ethnicity. Genomic DNA extraction from peripheral blood samples, collected from the study subjects, was carried out using salting-out method. MMP-2 and TIMP-2 genotyping was performed using polymerase chain reaction-based restriction fragment length polymorphism. Our findings demonstrated no significant association between MMP-2 (−735C > T) and TIMP-2 (−418G > C) gene polymorphisms and the risk of developing cervical cancer in the study population. Further stratified analysis using a case-only study approach revealed that there was no effect of MMP-2/TIMP-2 polymorphisms on early and advanced stages of cervical cancer. Further MMP-2 and TIMP-2 polymorphisms did not modulate the risk in cervical cancer patients who smoked tobacco/cigarettes. Overall, the present study demonstrated a lack of association between MMP-2 and TIMP-2 gene polymorphisms and cervical cancer susceptibility in women of Northern India.     

Linear Algebra Students' Understanding of Similar Matrices and Matrix Representations of Linear Transformations in a MATLAB-Assisted Learning Environment

Abstract

The purpose of this research study was to understand how mathematics majors make sense of similar matrices, a linear algebra topic that is rich in internal and external connections, in a series of in-depth qualitative interviews in a technology-assisted (MATLAB) learning environment. The study was also an attempt to develop a cognitive theory in mathematics majors’ treatment of similar matrices and matrix representations of linear transformations in a computer-assisted learning environment by drawing primarily on three aspects of the experimental mathematics methodology, made possible by using modern digital tools to enhance learning: testing conjectures, suggesting proofs, and, computing lengthy hand derivations (Borwein &; Bailey, 2003 Borwein, J. M., &; Bailey, D. H. (2003). Experiments in mathematics: Computational paths to discovery. Natick, MA: AK Peters. [Google Scholar]). The analysis revealed a diversity of innovative ways by which research participants coordinated analytic and computational (MATLAB) methods for understanding matrix similarity and its connections to the rest of linear algebra. The paper concludes by offering pedagogical implications and recommendations for further research.     

基于状态观测器的非一致采样系统状态反馈预测控制

针对输入更新不等间隔的非一致采样系统,提出一种基于状态观测器的状态反馈预测控制算法．通过提升控制信号,设计了输入输出同周期的非一致采样系统的状态观测器,并且给出了提升控制信号前后观测器系数矩阵的关系．运用线性矩阵不等式方法,解决无穷时域二次型性能指标下的优化问题,给出了状态反馈预测控制器存在的充分条件．仿真结果证明了控制算法的有效性．     

泉州港在海西经济带中的地位分析

2009年2月福建省政府正式印发《福建省沿海港口布局规划（2008—2020年）》,规划中泉州港将建成全省沿海地区的重要港口;2009年5月《国务院支持福建加快建设海峡西岸经济区若干意见》正式发布,海西建设进入大发展时期。从这一大背景出发,利用SWOT矩阵分析法的原理,对泉州港口在海西经济带中的地位进行了较深入的分析,指出了泉州港口在海西建设重大战略机遇面前所拥有的优势和机遇,同时分析了泉州港口面临的不足和挑战。     

花籽山药组培苗的移栽驯化技术初探

为探讨花籽山药组培苗移栽驯化的适宜基质,选用不同的基质材料在温室大棚内进行山药组培苗不同基质移栽驯化试验.结果显示：不同基质对花籽山药组培苗的成活率、新根数、新叶数影响有显著差异,以处理2（蛭石1：珍珠岩1：腐殖土2）最为适宜,移栽后30天的成活率为78％,新根数为3.6条/株,新叶数为2.25叶/株.