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目前电力通信领域光纤组网方式应用范围非常广泛,一旦发生自然灾害,例如洪水、山体滑坡等,都会严重威胁这些光缆的正常运行,大面积光缆中断问题也可能会发生,因此必须对电力系统应急通信加以研究。本文从系统观点出发,综合分析了电力通信专网中无线通信技术的实际应用,给出了电力通信专网中无线通信技术的组网方案,希望可以为大家提供一些参考。 相似文献
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基于软交换的网络智能化增值业务开发 总被引:3,自引:0,他引:3
从分析基于软交换的网络智能化的组网方式入手,对其增值业务实现中的业务触发机制和接口协议等关键问题进行了分析和探讨,并以“一号通”业务为例,对“一号通”业务处理流程和信令流程进行了说明,可为各固网运营商开展基于软交换的网络智能化增值业务提供参考。 相似文献
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冒海波王懿占亿民徐子煜胡俊 《广播与电视技术》2020,(11):69-71
本文从行业背景及公司现状出发,分析基于有线电视网络的"分屏共享"智慧业务的研究与实现,并对技术路线和功能呈现作了全面介绍,并对平台发挥的重要作用进行了阐述。 相似文献
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In order to study the effect of different risk measures on the efficient portfolios (frontier) while properly describing the characteristic of return distributions in the stock market, it is assumed in this paper that the joint return distribution of risky assets obeys the multivariate t-distribution. Under the mean-risk analysis framework, the interrelationship of efficient portfolios (frontier) based on risk measures such as variance, value at risk (VaR), and expected shortfall (ES) is analyzed and compared. It is proved that, when there is no riskless asset in the market, the efficient frontier under VaR or ES is a subset of the mean-variance (MV) efficient frontier, and the efficient portfolios under VaR or ES are also MV efficient; when there exists a riskless asset in the market, a portfolio is MV efficient if and only if it is a VaR or ES efficient portfolio. The obtained results generalize relevant conclusions about investment theory, and can better guide investors to make their investment decision. 相似文献