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10月21日下午,"ICT中国·2008高层论坛"在北京中国国际展览中心新馆成功举行.本届论坛的主题为"融合、转型、服务与合作",是2005年以来的第四届,邀请了工业和信息化部、国务院国有资产监督管理委员会、中国通信企业协会等政府部门、行业协会的领导;国际电信联盟、GSM协会、CDMA发展集团、TD-SCDMA产业联盟、TD-SCDMA技术论坛等国际组织和机构的领导;中国电信、中国移动、中国联通、NTT DoCoMo等电信运营企业的领导以及大唐电信集团、诺基亚西门子、爱立信、IBM、惠普、埃森哲、高通、安永等国际知名企业的领导出席并发表演讲. 相似文献
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1传统媒体面临挑战和机遇互联网和通讯技术的蓬勃发展,彻底改变了信息传播的固有模式,传媒业充斥着新媒体形态的身影:门户网站、虚拟社区、博客、播客、搜索引擎、简易聚合、数字电视、移动电视、网络电视、楼宇视屏、移动多媒体(短信、手机彩信、手机游戏、手机电视、手机广播、手机报纸)、网上即时通信等等。 相似文献
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互联网天生就是一个悖论的集合体.在这里匿名与实名、虚拟和现实并存:自由、共享、免费与管制、商业反盗版、收费观念相互角逐;眼球、烧钱、流量、共享、免费、盗版似乎是永久的主题…… 相似文献
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介绍构件、中间件的概念、分类及技术特点,阐述了构件与中间件在异构数据库及电子商务方面的应用。 相似文献
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根据矢势和标势满足的波动方程,分析了电磁波传播时电场的纵向分量与横向分量之比值,用量级分析的疗法证明了其纵向分量可以忽略。 相似文献
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在变电站中,刀闸作为高压设备的一种,承担着转换运行方式的职责,实现相应运维工作的完善落实,能够及时发现运行异常状况并落实完善的处理措施,为确保电网的安全可靠运行奠定基础.本文针对如何实现变电站刀闸运行维护以及异常处理工作的完善落实进行了研究,并提出了一系列对策. 相似文献
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从传统电子战走向信息战 --电子战发展简史及信息战的定义与内涵 总被引:1,自引:0,他引:1
蒋盘林 《电子信息对抗技术》2005,20(4):3-11
本文在简要介绍电子战的发展历史的基础上,详细叙述了传统电子战、指挥控制战和信息战的定义、内涵及相互关系。 相似文献
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文章以网络智能卡的定义作为切入点,分析了将网络智能卡链接到Internet中,作为一个独立结点供其它结点访问的可行性,并提出了实现的方案。具体介绍了方案的执行模式,并指出在卡上实现TCP/IP协议是实现设想的关键技术,介绍了该技术在卫生保健领域的应用前景。 相似文献
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The US Federal Securities Laws extensively regulate disclosure by publicly traded companies. Overregulation has sometimes hindered management's ability to develop effective and timely communications. The author discusses how two recent developments have returned some degree of flexibility and control over the communication process to management. In January 1986, the commission approved the use of the summary annual report. Unlike conventional glossy annual reports, summary reports are subject to substantially less regulation. Companies largely have a free hand to determine the contents of the reports, raising the prospect of shorter, more readable, and more effective documents. The Commission also adopted rules providing companies with access to lists of shareholders holding stock in street name and nominee accounts. With the information, companies can mail corporate communications directly to beneficial owners. Direct communications will permit more frequent communications at reduced costs 相似文献
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Evaluation and Comparison of the IRS-P6 and the Landsat Sensors 总被引:2,自引:0,他引:2
Chander G. Coan M.J. Scaramuzza P.L. 《Geoscience and Remote Sensing, IEEE Transactions on》2008,46(1):209-221
The Indian Remote Sensing Satellite (IRS-P6), also called ResourceSat-1, was launched in a polar sun-synchronous orbit on October 17, 2003. It carries three sensors: the high-resolution Linear Imaging Self-Scanner (LISS-IV), the medium-resolution Linear Imaging Self-Scanner (LISS-III), and the Advanced Wide-Field Sensor (AWiFS). These three sensors provide images of different resolutions and coverage. To understand the absolute radiometric calibration accuracy of IRS-P6 AWiFS and LISS-III sensors, image pairs from these sensors were compared to images from the Landsat-5 Thematic Mapper (TM) and Landsat-7 Enhanced TM Plus (ETM+) sensors. The approach involves calibration of surface observations based on image statistics from areas observed nearly simultaneously by the two sensors. This paper also evaluated the viability of data from these next-generation imagers for use in creating three National Land Cover Dataset (NLCD) products: land cover, percent tree canopy, and percent impervious surface. Individual products were consistent with previous studies but had slightly lower overall accuracies as compared to data from the Landsat sensors. 相似文献