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1引言
近年来,随着网络技术和市场环境的发展,电信业的商业模式、运营模式、管理模式等发生着巨大的变化。为适应市场竞争环境的变化,中国电信正在从传统的通信服务提供商向综合信息服务提供商转型,由传统的语音服务向数据、多媒体等信息服务转变,由单一业务运营向全业务(固定/移动)运营转变,由窄带业务向宽带业务转变,由同质化服务向差异化、个性化服务转变。 相似文献
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讨论了电信运营企业战略转型的涵义和重大意义以及实现战略转型需要解决的问题.认为电信运营企业的战略转型,是在新兴的信息化市场环境下,由经营传统的语音产品向经营信息产品的转变,由主要靠语音产品赢得利益向主要靠信息产品赢得利益的转变.加快和推动战略转型,是保证电信运营企业可持续发展的出路所在,只有实现战略转型,才能实现可持续发展.同时认为,电信运营企业的战略转型是一个艰苦的演进过程,要搞好战略转型,就要调整企业现有的市场定位,调整企业现有的产品定位,调整现行的运营管理体制和营造良好的市场环境. 相似文献
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运营支撑系统面临的挑战近年来,随着网络技术的发展和市场环境的变化,电信业的商业模式、运营模式和管理模式等都发生了重要的变化。为适应信息技术、网络和业务的发展,应对更加激烈的竞争,电信运营商也在进行战略调整,从传统的通信服务提供商向综合信息服务提供商转型,由传统的语音服务向数据、多媒体等信息服务转变,由单一业务运营向全业务经营转变,由窄带业务向宽带业务转变,由同质化服务向差异化、个性化服务转变。 相似文献
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谷和启 《通信业与经济市场》2006,(4):4-7
转型是当前电信业最热门的话题,中国电信要从传统基础网络运营商向现代综合信息服务提供商转型,中国电信的转型内涵,就是向以市场为导向、以客户为中心、以效益为目标的企业运营模式转变。 相似文献
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当前,全球IDC产业的发展步入转型期,IDC正在从企业IT基础设施的核心向提供传统业务和各种新型网络应用服务转变。相比欧美,亚太地区成为全球IDC增长最快的市场,IDC建设的动力强劲,但需要警惕过度供给的可能。 相似文献
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当前,运营商正从传统的网络运营向信息服务转型,而城域网建设—直是关键所在,极进网络在专注于此领域建设的同时,也将视角瞄向了高速增长的IP RAN和IDC市场。 相似文献
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互联网改变了人们通信的方式,使传统固网通信需求被进一步分流.语音业务的低值化已经成为趋势,固网运营商必须转型.不仅只是受限于政策,固网运营商在转型过程还面临自身战略定位和运营模式的转变.本文尝试从行业发展趋势识别固网运营商的核心能力,对其转型中的关键问题进行研究.作者认为,未来运营商的运营模式将从语音运营模式转变为整合运营模式. 相似文献
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分析了电信运营企业的结算模式从传统的定性分析向目前的定量分析的转变,以及从传统系统间的信息孤岛向企业数据共享的转变,介绍融合结算分析系统如何为电信运营商"精确化管理、精细化营销"提供数据支撑. 相似文献
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电信运营商面临从传统电信运营模式向现代电信运营模式的转变,重点探讨电信运营支撑系统需要新思维,以应对电信运营模式的转变。 相似文献
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采用高压直流系统供电向IDC设备供电,以低投资、高可靠性、低运营成本等优势逐步成为IDC机房的一种供电模式。就中国电信IDC机房采用高压直流供电的可行性、优势特点、配置方式等进行了简要分析。 相似文献
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一种CCD工作寿命预计方法 总被引:1,自引:0,他引:1
介绍了一种适用于电荷耦合器件(CCD)的工作寿命预计方法。对CCD的失效模型进行了分析,并进行加速寿命试验,试验结果与理论分析结果较好地吻合。试验结果表明,对于一款成熟应用的CCD,其工作寿命值与其质量等级有直接的关系;质量等级越高的器件,其工作寿命值也越长。 相似文献
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《信息安全与通信保密》2004,(7):77-77
目前,我国计算机信息系统中的主流操作系统基本采用的是国外进口的C级操作系统,即商用操作系统。商用操作系统不是安全的操作系统,它在为计算机信息系统带来无限便捷的同时,也带来了非常令人担忧的安全隐患。 相似文献
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《Electron Devices, IEEE Transactions on》1979,26(10):1472-1482
The function of the crossed-field closing switch (CFCS) has has been studied over a wide range of variables. Three different modes of conduction have been observed: the conventional crossed-field discharge, a hybrid hollow-cathode discharge, and the vacuum arc. Depending on the amplitude and duration of the current, conduction may typically pass through these modes in the above sequence. The CFCS may be triggered magnetically or by grid control into a number of states with varying levels of voltage drop. Conduction may be allowed in the reverse direction or prevented. The present design is limited in response speed and repetition rate by the inductance of the grid and anode leads, the lack of efficient pressure control, and the need for a pulsed magnetic field. Criteria are presented which show the directions in which extrapolations in design may lead. It is concluded that the CFCS is potentially capable of performing some functions more reliably or effectively than conventional switching devices, and variants of the device may eventually be capable of performing functions not presently achievable by any other means. 相似文献
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Gyrotron-TWT Operating Characteristics 总被引:1,自引:0,他引:1
《Microwave Theory and Techniques》1981,29(8):794-799
The gyrotron traveling-wave tube (gyro-TWT) is a new type of millimeter amplifier which employs the electron cyclotron maser instability as a basis for the electron-electromagnetic wave interaction. A C-band gyro-TWT, employing the fundarnental cyclotron resonance interaction with the circularly polarized TE/sub 11/ dominant waveguide mode, has been constructed and tested. Initial power measurements yielded an output power of 50 kW at 60-kV beam voltage with 16.6-percent efficiency and 6-percent bandwidth. These measurements were recorded with a flat magnetic field. Subsequent experimental testing yieIded, for a magnetic field increasing in magnitude towards the output portion of the tube, 128-kW and 65-kV beam voltage at 24-percent electronic efficiency. The maximum efficiency was 26 percent at 120.5-kW peak power, with an instantaneous bandwidth of 7.25 percent as measured in a high-beam power mode (65 kV, 7 A). In the low-beam power mode (40 kV, 4 A), the efficiency was 9.8 percent at 18.8-kW peak power at 9.3-percent instantaneous bandwidth. Additional experimental results of AM and PM modulation coefficients, spectral purity, phase Iinearity, and noise figure are presented. 相似文献
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Ooi B.T. Mwinyiwiwa B.M.M. Wang X. Joos G. 《Industrial Electronics, IEEE Transactions on》1991,38(4):268-274
A stand alone, three-phase, delta-modulated, current-source PWM rectifier has been built and has been shown to be capable of operating with near sinusoidal current waveforms, unity power factor. and good DC current regulation. A mathematical model that has been justified against experimental measurements and results from digital simulations is presented. The current waveform distortion limit and the asymptotic stability limit are established. It is shown that the rectifier can operate safely within these limits in the entire range of its power ratings 相似文献