基于SMTP组件的多功能邮件服务系统研究

探讨了ＩＩＳ中ＳＭＴＰ服务组件的处理机制,包括邮件的存储机制、本地邮件和远程邮件的接受和发送机制、ＳＭＴＰ服务中的安全机制,并介绍了如何结合ＩＩＳ中的ＳＭＴＰ服务组件和ＡＳＰ技术来构建小型的邮件服务系统。还讨论了引入ＣＴＩ来扩展邮件服务系统功能,实现语音邮件、传真邮件、邮件追身寻呼的技术。     

Windows Server 2010中IIS的安装

Internet信息服务(Internet Information Servers,IIS)是Windows 2010 Server的组件,无需第三方程序即可用来搭建基于各种主流技术的网站,并能管理Web服务器中的所有站点。IIS是随Windows NT Server 4.0一起提供的文件和应用程序服务器,是在Windows NT Server上建立Internet服务器的基本组件。IIS设计目的是建立一套集成的服务器服务,用以支持HTTP、FTP和SMTP,它能够提供集成现有产品同时可扩展的Internet服务器。详细介绍了在Windows 2010 Server中IIS的安装,验证了IIS服务器是否安装成功,并对每个步骤都进行了配图说明。     

利用Delphi 7实现基于SMTP的邮件发送系统

SMTP是Internet上基于TCP/IP的应用层协议,适合Internet上电子邮件的传输。该协议比较简单,但利用API函数来完成邮件通信却比较麻烦。本文介绍了利用Delphi7提供的TIdSmtp组件和TIdmessage组件实现电子邮件发送的方法。     

电子邮件过滤器的分析与设计

针对电子邮件应用日益广泛,邮件系统安全防护问题日益突出的现状,分析了邮件防护系统的关键－－电子邮件过滤器在系统中的地位及其应用的必要性,提出了若干种邮件过滤器的结构方案及其在网格上的部署方案,并由此得出了相关结论：基SMTP过滤器的,具有基于规则的、附件扫描的、可清除恶意脚本的多重过滤能力的邮件过滤系统,是邮件安全防护系统的基础,在此基础上,一方面对SMTP过滤器的功能进行扩充,使其成为独立的邮件服务器,直接满足用户的要求;另一方面,对于不支持SMTP的专用消息传递系统,研制对应的邮件过滤插件,只有这样,才能形成全面的邮件安全防护系统的解决方案。     

加强IIS的安全管理 确保Web服务器安全

针对目前Internet上Web服务器所存在的安全隐患,阐述了如何通过Windows2000平台和IIS服务器组件的安全管理来提高IIS的安全机制,建立一个高安全性的Web服务器。     

加强IIS的安全管理 确保Web服务器安全

针对目前Internet上Web服务器所存在的安全隐患，阐述了如何通过Windows2000平台和IIS服务器组件的安全管理来提高IIS的安全机制，建立一个高安全性的Web服务器。     

基于G.729标准的通用IP语音邮件系统

为了将IP网络电话、语音电子商务等通信方式的优点融入电子邮件系统之中,构造大容量,具备电话和电脑两类用户、能随时随地接入的邮件系统。以通用SMTP/POP3邮件协议为基础,提出基于实时语音压缩的IP语音邮件的SMTP/POP3修改协议,并用VC++编程语言实现基于G.729实时语音压缩标准的、具有简单和方便操作界面、具备说话人特征的IP语音邮件系统。系统测试结果表明,系统能够自由实现电脑用户到电话用户、电脑用户到电脑用户、电话用户到电话用户以及电话用户到电脑用户间的语音邮件发送和接收,提供特快语音邮件和普通语音邮件服务功能。     

使用SMTP组件发送邮件

使用Visual c#的SMTP组件可方便地实现邮件的发送。SMTP邮件功能包含在三个类中:SmtpMail类、MailMessage类和MailAttachment类,调用SmtpMaill类的静态方法Send()完成邮件发送。     

IIS配置的安全建议

IIS是微软的组件中问题最多的一个,通过对IIS系统的分析和研究,找出了由IIS引起的网站不安全因素的根源,提出了一套解决IIS安全配置的方案。     

基于Java安全技术的安全电子邮件系统的建立

介绍了在保留SMTP及其邮件服务器程序的前提下,利用Java语言的安全性技术对SMTP服务器进行必要的安全性扩展,实现安全电子邮件系统的方案.并给出了该方案主体部分的流程和其中一步的实例程序.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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