双边四元数傅里叶变换的性质

重新证明了一个二维实函数的双边四元数傅里叶变换具有四元埃尔米特性，并利用此性质构造性地证明了一个二维实值函数的双边四元数傅里叶变换可以被分解成具有不同对称性的4个部分．     

Dielectric anomalies in CaCu3Ti4O12 at high temperatures

We reported the dielectric properties of CaCu3Ti4O12 in the temperature range from room temperature to 800℃ and the frequency range from 20 Hz to 10 MHz.Apart from the widely reported dielectric anomaly occurring around 200℃,three additional dielectric anomalies were found.The new anomalies are very sensitive to electrode sintering conditions and annealing atmospheres,indicating that they are dependent not only on the electrode-sample contact but also on oxygen vacancies.     

具有某些X-半置换子群的有限群(英文)

最近几年,利用子群的置换性质刻画有限群结构成为了人们感兴趣的课题.文献(J.Algebra,2007,315:31-41.)引入了X-半置换子群的概念:设X是有限群G的一个非空子集.G的一个子群A称为在G中X-半置换,如果A在G中有一个补T使得对于T的任意子群T1,存在x∈X使得ATx1=Tx1A.结合文献(Commun.Algebra,2008,36(6):2333-2340.)引入的p-群的特殊极大子群,利用这些极大子群的X-半置换性,通过对X的巧妙选择,得到有限群成为p-可解、p-幂零和超可解的若干充分条件,推广了若干熟知的相关结果.这些新结果将丰富和促进有限群结构的相关研究.     

在新的历史起点上对解放思想的客观性和路径的思考

解放思想是在新的历史起点上坚持和发展中国特色社会主义的必然选择。在新的历史起点上解放思想必须以新的历史起点为基础、以思维方式创新为根本、以“人的解放和发展”为关键、以理论创新为主题。     

改革开放30年我国农村经济政策与农民收入研究

文章根据1978年以来国家支农政策，将至今的农民收入变动情况分为4个阶段，分析各个时期的政策对农民收入的影响，通过分析导致这种变动的政策性因素，寻找使农民增收的长效机制，最后提出了作者认为比较合理的建议，对现行政策进行补充。     

地方高校图书馆“人才危机”现状的分析与思考

本文通过对江苏省部分高校图书馆人才队伍的男女比例、年龄结构、学历结构、知识结构几方面的调查,分析了高校图书馆出现人才危机的原因,并提出了应对人才危机的具体策略。     

In-situ cosmogenic 36Cl denudation rates of carbonates in Guizhou karst area

This study quantifies surface denudation of carbonate rocks by the first application of in-situ cosmogenic36Cl in China. Concentrations of natural Cl and in-situ cosmogenic36Cl in bare carbonates from Guizhou karst areas were measured with isotope dilution by accelerator mass spectrometer. The Cl concentration varied from 16 to 206 ppm. The 36Cl concentrations were in range of (0.8-2.4)106 atom g-1 , resulting in total denudation rates of 20-50 mm ka-1 that averaged over a 104-105 a timescale. The 36Cl-denudation rates showed roughly a negative correlation with the local mean temperature. This preliminary observation may suggest the variations of proportions of chemical weathering and physical erosion in denudation process, depending upon local climatic conditions.     

论美国文学中的宿命论

在新自然哲学的影响下．宿命论应运而生。宿命论本身也经历一个从非理性到理性的发展过程，并反映在这一时期的美国文学中。本文从德莱塞、麦尔维尔、奥尼尔等作家的作品切入，结合历史背景，探讨宿命论在关国文学中的反映和发展。     

桩周摩阻力的试验分析

桩周摩阻力、桩底反力与位移和土质有关.通过桩的静栽试验和对桩周摩阻力,桩底反力测试,并对试验数据进行分析,获得了在复杂地质条件下,基桩的荷载传递特性,桩土作用特点,桩周摩阻力及桩底反力发挥特性.在此基础上评估桩的承栽能力,可作为在复杂地质条件下进行桩基工程设计和施工的参考.     

Research on Construction Knowledge Resources Framework of Real Estate Enterprises

<正>Many studies have shown that knowledge resources have been the real source of innovation and competitiveness of real estate enterprises.Therefore,it is the basic work to establish the real estate enterprise knowledge resources framework for implementing knowledge management(KM),and it should be given enough attention.A sort of the real estate enterprise knowledge resources framework system has been built in this paper based on the thought of Clark Henderson' s enterprise knowledge classification,and the contents have been analyzed and expounded.Thus,the real estate enterprises can grasp clearly the basic contents of its knowledge resources,then depict the knowledge system,in the end the solid foundation should be settled for implementing knowledge management.