校园网邮件系统的构建与安全防范

当前所流行的邮件服务器系统软件有多种 ,各有其特点和不足 在江苏大学校园网建设中 ,基于对目录服务的集成和应用 ,我们选择了NovellNetware 文中阐述了校园网邮件系统的规划 ,介绍了GroupWise在校园网邮件系统中的应用 在邮件系统的应用过程中 ,针对所出现的系统稳定性、安全性等方面的问题 ,采取了基于QMAIL的垃圾邮件处理方案 ,并对该处理方案进行了论述 最后 ,对如何在GroupWise及QMAIL中实现多域名问题进行了探讨     

求解外延膜多尺度应变模型的代数多重网格法

对于外延膜多尺度应变模型的求解，设计了一类代数多重网格方法，进而以该代数多重网格为预条件子，结合其轭梯度法，得到一种预处理技术。数值实验结果表明，我们构造的代数多重网格算法是健壮的，具有很好的计算效率。     

高温超导融熔织构材料中单颗粒边界结的制备和测量

研究了从高温超导ＹＢＣＯ融熔织构材料中分离出单颗粒边界的工艺。采用聚酰亚胺材料作为绝缘层，从单颗粒上引起出电压测量引线，实现了对单颗粒边界传输特性的测量。实验观察到这类样品中的颗粒边界在不同的传输特性，包括磁通流类型和Ｊｏｓｅｐｈｓｏｎ弱连接类型。     

Concentrations of “elemental carbon” in samples from the Peking Man Site at Zhoukoudian and the possibility of their application in the development of evidence for the use of fire by humans

Elemental carbon?EC) is a C-rich, O-H-S-N-depleted substance that is necessarily produced in the process of combustion. Due to the logn-term use of fire by cave-inhabiting ape-men, considerable amounts of 揺lemen-tal carbon?would be necessarily left behind in the corre-sponding strata inside the cave. The sepaation of EC was effected by the chemical method and the contents of carbon were determined on an element analyser and a self-made measuring system. The concentration of Ec in the hearth,the exhibited ash samples collected from near the hearth un-earthed in the 1930s, and the three samples of accumulated material collected from the tenth bed are 43.74%, 1.77%,3.88%,1.87% and 1.11%,respectively; those of the equivalent samples from the tenth bed outside the cave and samples from the fourth and seventh beds are at least one order of magnitude lower than the former抯. The above re-sults show that the sampling location of the tenth bed may be close to the hearth. Sampling over a wider range may lead to the finding of a location where the concentrations of EC are corresponding to the maximum values of EC in the hearth. The determination and study of EC may provide new evi-dence for the use of fire by Peking Man.     

The model of defense gene expression induced by signaling molecule β-ocimene

β-ocimene, a kind of monoterpene, was found recently as a plant communication signal molecule. It has two isomeric forms in nature: cis-β-ocimene and trans-β-ocimene. According to recent reports, all investigated plants, such as corn, cotton, lima bean, potato, tobacco, arabidopsis, and Mediterranean pine, could release the chemical component β-ocimene after fed by arthropod herbivores,     

高校写作教学内容与中小学写作教学内容的衔接对策

长期以来,高校写作教学内容的设置,不以现有中小学写作教学内容为参照,同中小学写作教学内容多有重复,没有建立起合理的教学结构,使得高校写作教学效益不高。通过对二者之间的重复进行比较、分析,提出高校写作教学同中小学写作教学内容衔接的相应对策。     

Query through heterogeneous ontologies using association matrix

This paper introduces the definition and calculation of the association matrix between ontologies, h uses the association matrix to describe the relations between concepls ill different ontologics and uses concept vectors to represent queries; then computes the vectors with the association matrix in order to rewrite queries, This paper proposes a simple method of querying through heterogeneous Ontology using association matrix. This method is based on the correctness of approximate information filtering theory; and it is simple to be implemented and expected to run quite fast.     

加速科技进步促进"红三角"经济繁荣

当今社会,科技进步对经济增长的影响越来越深远．实现“红三角”经济繁荣,必须充分重视科技进步对经济增长的促进作用．     

跨文化交际与语言“出格“现象的研究

以认知和语言顺应理论为依据,讨论跨文化交际和语言"出格"现象的问题.语言是交际的工具,是文化的载体.语言与文化相互依存,相互作用.人们为了交际,就应掌握、运用语言;要交际成功,就应选择、理解语言,求得双方认知心理平衡,让语言顺应环境,并根据环境来顺应语言.