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互联网是一个无政府世界，有些人利用电子邮件肆意散发邮件广告，导致很多人的邮箱垃圾成堆；有些人利用电子邮件制造邮件炸弹，要么使电子邮件服务器瘫痪，要么使别人无法正常使用电子信箱；还有更坏的人利用电子邮箱传播电脑病毒．本文针对UNIX系统中的邮件服务器，阐述了通过使用Sendmail配置邮件中继域文件relay-domains和Ac-cess文件防止邮件攻击的技术． 相似文献
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孙卫华 《河北广播电视大学学报》2011,16(2):27-28
电子邮件在远程教育中的作用主要表现在：学生提交作业并及时获得教师反馈,为学生提供向教师求疑解难的通道,建立师生间主动的信息推送服务关系,培养学生的质疑能力、书面表达能力以及师生间的沟通能力。教师在应用电子邮件时应注意与其他通讯方式配合,发挥引领、激励和组织作用,邮件内容应包含学生关注的一切。 相似文献
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We test the hypothesis that scientific collaboration is associated with increased publication productivity. We differentiate our approach from other studies by (a) incorporating professional networks in the productivity model, (b) casting productivity and collaboration as distinct phenomena, and (c) examining these phenomena in the context of resource-constrained research institutions in a developing country. We use survey data and employ negative binomial regression models. Results indicate that publication productivity is significantly linked to professional network factors, but there is no evidence of any association with scientific collaboration. We observe that most scientists collaborate in research projects despite coordination difficulties, and without any measurable impact on their productivity. Our interviews reveal that a possible answer to this puzzle appears to be rooted in a practice that views collaborative research projects not mainly as a means to producing knowledge and gaining recognition, but for acquiring professional opportunities and extrinsic rewards. Our findings suggest a new way of modeling publication productivity, with implications for science and innovation policy in both the developed and the developing world. 相似文献
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Email营销为电子商务带来了商机,对企业的品派拓展带来了积极的影响。由于受到人们观念的限制和垃圾邮件的影响,在发展中面临困境,从营销理念到Email的设计,阐述企业应如何走出Email营销的发展困境。 相似文献
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电子邮件是网络应用中使用最多的交流工具，英语教师可以使用电子邮件的交互功能设计出多种英语写作教学活动，使学生通过真实的语言写作交流来不断提高其英语应用能力和社会交际能力。 相似文献
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目前,各种通信应用不断涌现,为中小企业提高商业运作效率带来了机遇。与此同时,如何有效利用各种通信方式,将其融入自己的商业运作模式也是中小企业必须面对解决的重要问题之一。该文作者结合当前中小企业商业信息通信现状,在分析目前几种商业通信方式特点的基础上,针对中小企业如何选择合适的通信方式实现信息的安全通信这一问题提出一些建议。 相似文献
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Zakari Mohammed 《International Information and Library Review》2013,45(2):65-72
The paper examines the state of library automation in academic and special libraries in Nigeria. As a background, an attempt was made to present efforts made by different bodies and institutions in the country to automate their entire library systems. Also disclosed are the reasons why the libraries opted for automated systems, the successes achieved by some of the libraries in automating their systems, and the problems faced by the libraries who succeeded in automating some of their systems as well as those who are still in the process of doing so. Considering the fact that the automation of library systems in Nigeria has spread from academic and special libraries to the public, and there are also a number of companies/institutions engaged in the provision and servicing of computer hardware and software including management information systems, the paper concluded that the future of library automation in the country is bright. 相似文献
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电子邮件的核心价值在于用户利用互联网达到快速便捷地传递信息和沟通的目的。电子邮件在教学中传递作业、分享资讯、同侪讨论、合作学习、便于师生与家长沟通等功能已为越来越多的教育工作者所认同。这为大学英语教学突破传统的"教师灌输——学生被动接受"模式、充分利用网络信息技术促进英语教学改革提供了新的思路。以兰州交通大学非外语专业的大一新生英语写作教学为例,对实验组和对照组分别采取跨文化电子邮件交流和传统纸笔写作教学方式实施对比教学研究,结果显示:跨文化电子邮件交流显著提高了学生的写作水平,尤其是写作的流利性和准确性;也增强了学生的内在学习动机。教师在跨文化电子邮件交流之前应进行精心策划,交流过程持续的时间不宜太短,应及时发现学生在交流过程中出现的问题,扮演好监督者的角色。 相似文献
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Internet的迅速发展,电子邮件的应用变得十分广泛,但是许多无用、有害信息随之而来。通过对"垃圾邮件"的分析、处理,讨论了一种基于支持向量机的垃圾邮件识别方法,并进行了实验,实验结果表明支持向量机对垃圾邮件的识别是有效的。 相似文献