Bézier曲线的升阶及程序实现     

林芳  李大可 《西安文理学院学报》2010,(4):47-49,106

基于Bézier曲线的升阶算法,探讨了程序开发的关键技术,并在Visual C++6.0环境下开发Bézier曲线的升阶程序,曲线升阶在界面中可动态实现.  相似文献   

基于UML的通用在线考试平台建模     

杨玲  赵龙 《信息系统工程》2010,(8):19-20

以通用在线考试平台的设计为背景,探讨了UML在该平台建模过程中的应用。在需求分析的基础之上对这个平台的体系结构进行了流程分析,采用Rose工具建立用例图、交互图、物理建模等模型。  相似文献   

一种网络数据报数字标识方案的研究     

王永刚 《信息系统工程》2010,(4):48-49

在网络通信中存在对某些数据报进行隐秘标识的需求,但是对数据报进行标识的数据量却很少,因此本文根据这一需求,设计出了建立在基于TCPIP协议字段的网络数据报标识方案,通过程序设计实现了网络数据报的臆秘标识。实验测试结果表明,本文所实现的网络数据报标识方案正确、有效。  相似文献   

基于XML／Metadata的非物质文化数字图书馆建设   总被引：1，自引：0，他引：1  

吴林娟  瞿辉 《图书馆界》2010,(3):4-6

鉴于数字图书馆在非物质文化保护中的重要作用,在分析数字图书馆的定义、功能和实现标准的基础上,提出了一种基于XML／Metadata框架的非物质文化数字图书馆架构,并且给出了该架构的组成以及各组成部分的功能划分,描绘了实现各部分功能的关键技术。  相似文献   

利用Domino/Notes实现数字图书馆管理自动化系统     

杨峰  李娟  张惠君 《图书馆理论与实践》2010,(1)

介绍了数字图书馆管理自动化系统的开发平台、系统具体的功能目标,并根据数字图书馆的理念和对数字图书馆职能体系的理解,给出了数字图书馆管理自动化系统的功能框架和结构模型。最后,介绍了系统的设计与实现的技术路线。  相似文献   

Study on the reactions of azo compounds with acyl halides mediated by Sm/TiCl4     

Li X  Zhang YM 《Journal of Zhejiang University. Science. B》2006,7(3):198-201

INTRODUCTION Amides are important commercial and biologi-cal compounds. Because amides constitute the backbone of protein molecules, their chemistry is of extreme importance. The penicillin and cephalosporin antibiotics are among the best-known products of the pharmaceutical industry. For this reason, the devel-opment of new and simple methods for the synthesis of the peptide bond always constitute an important addition to the field of natural products synthesis. Several general methods …  相似文献   

A convenient and stereoselective synthesis of （Z）-allyl selenides via Sm/TMSCI system-promoted coupling of Baylis-Hillman adducts with diselenides     

Liu YK  Xu DQ  Xu ZY  Zhang YM 《Journal of Zhejiang University. Science. B》2006,7(5):393-396

A simple and convenient procedure for stercoselective synthesis of （Z）-allyl selenides has been developed by a one-pot reaction of diselenides with Baylis-Hillman adducts in the presence of samarium metal-trimethylsilyl chloride under mild conditions. Presumably, the diselenides are cleaved by Sm/TMSCI system to form selemde anions, which then undergo SN2＇ substitution of Baylis-Hillman adducts to produce the （Z）-allyl selenides.  相似文献   

连续型遗传算法和遗传规划在投影变换中的应用初探     

刘艳  武广臣 《辽宁科技学院学报》2006,8(4):49-50

回顾了地图投影变换的基本方法,阐述连续型遗传算法和遗传规划的原理和方法,探讨这两优化方法在地图投影变换中的应用.  相似文献   

The Virtual Learning Environment ROODA: An Institutional Project of Long Distance Education   总被引：1，自引：1，他引：0  

Patricia Alejandra Behar  Sílvia Meirelles Leite 《Journal of Science Education and Technology》2006,15(2):159-167

This article describes ROODA (), a virtual learning environment and one of the official Long Distance Education platforms that has been in use since 2005 at the Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil. It is free software that integrates syncronous and assyncronous interaction/communication tools and publications. In this study, details about institutional demands in relation to long distance education are discussed and ROODA is described with the components that were part of its development such as: modelling and programming, graphic interface and documents for users. Moreover, 19 functions were conceived. Finally, project investigation paths are presented where the platform described is inserted.

Patricia Alejandra BeharEmail:

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‘A Heaven of Hell, a Hell of Heaven’: His Dark Materials, Inverted Theology, and the End of Philip Pullman’s Authority     

Jonathan Padley  Kenneth Padley 《Children‘s Literature in Education》2006,37(4):325-334

This article argues that Philip Pullman’s His Dark Materials may be read as a series which attempts to assault the Christian doctrine of God. We believe that this demonstrably accords with Pullman’s personal views, and that, through his story, he seeks to foster such views in his readership. However, the accuracy of his attack falls short of its intended mark when it is examined alongside classical Christian theology. The Authority which Pullman’s narrative destroys is actually more akin to the Christian view of the devil than he is the divine, and the victories of Will and Lyra—as a new Adam and Eve—have strong resemblances to the victories which Christianity claims for Christ and Mary. Pullman’s narrative, therefore, becomes an inversion of his deicidal intention rather than an inverting and revolutionary destruction of theology.

Jonathan PadleyEmail:

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