查询词典 outage

The main contributions in this area are summarized as follows,? The closed-form formula and its asymptotic form of system outageprobability are derived, through which it is shown that the outage probability decreased by a factor ofγ~(hereγdenotes the average SNR);? The closed-form formula of outage capacity is derived, through which weshow that 1 outage capacity increases with the increases of mean value of sytem SNR, and decreases with the increase of the variance of system average SNR; 2 in order to obtain higher outage capacity, the number of transmit antenna should be no more than that of receive antennas.?

特别的，针对多用户发送天线选择／最大比合并系统，主要贡献总结如下：·理论推导出中断概率的闭式解及其近似解，通过该近似解，可以得到中断概率以γ~的形式减少(这里γ是平均信噪比SNR)·推导出平均中断容量的闭式表达式，研究表明：1中断容量随着有效平均SNR的均值的增加而增加，随着有效平均SNR的方差的增大而减小；2为了获得更高的中断容量，发送天线的数目应当不大于接收天线的数目。

Besides protection maloperation model, this paper thought over other dependent outage models such as stuck breaker, component-group outage, station-originated outage and common cause outage; the article chose initial system state of cascading failure by using of function group decomposition technique and event tree analysis, provided simplification principle and processing method of continual fault process analysis, then proposed one new probabilistic risk assessment method for cascading failure.

该文在分析中考虑了保护误动、断路器拒动、元件组停运、电站相关停运、共因停运等相关停运模型，利用功能组分解技术和事件树分析法，选择连锁故障的初始系统状态，提出简化相继故障过程分析的依据和处理方法，进而提出一种新的连锁故障概率风险评价方法。

Servo motor with outage brake is adopted in the braking device,adding an external outage brake on the plumb shaft of CNC machine,and the external outage brake is fixed on the upside of ball screw.

数控机床垂向滚珠丝杠制动装置采用带失电制动器的伺服电动机，再在数控机床的铅垂轴上，增加一个外置失电制动器。

Based on the individual model,a reliability evaluation model for parallel two-circuit transmission lines is proposed which considers in dependent outage ,common cause outage,and dependent outage .

提出了基于分离模型的考虑独立停运、共因停运和相关停运的双回平行输电线路可靠性评估模型，解决了传统的评估模型计算量大等缺点，在电力系统中双回路使用越来越多的情况下，使可靠性评估计及其他停运模型的影响成为可能。

The closed-form formula and its asymptotic form of system outage probability are derived, through which it is shown that the outage probability decreased by a factor of γ-KNtNr here γ denotes the average SNR

理论推导出中断概率的闭式解及其近似解，通过该近似解，可以得到中断概率以γ-KNtNr 的形式减少这里γ是平均信噪比SNR

Therefore, in order to guarantee the QoS requirements of each user, we proposed novel power allocation schemes to i minimize the maximum outage probability over all users, and ii to maximize the minimum rate under the outage probability and total power constraints.

由于每个用户的信道状态不同，采用传统的平均功率分配策略并非最优，为了满足用户的QoS要求，首先建立了在总功率受限条件下最小化最大用户中断概率的功率分配方案。

With the demonstration of 35kV line of Qinan substation, it built a numeral value calculation model of on-line data of each pole with EMTP program. Find out some factors of causing lines to outage frequently and the measures how to improve lightning withstand level of lines and decrease the lightning tripping outage of transmission line.

通过对线路基本电气参数的现场实测数据和波过程理论建立了与实际情况极为相符的雷击线路电磁暂态数值计算模型，在此模型基础上分析研究了影响线路耐雷水平的诸多因素，并重点研究了采用线路型避雷器来提高线路防雷性能的机理及影响因素。

Based on short circuit fault reasons causing the outage of roadway lighting, this paper presents four maintenance methods, including separate detecting, series fuse detecting, group lighting alternating supply detecting and applying projection lamp detecting, and via the aspects of economics and man-power usage to obtain the optimal one.

因此，本文针对夜间路灯线路因发生短路故障而未能点亮的情况，提出二分侦测法、串联保险丝侦测法、隔盏灯供电侦测法以及使用投光灯侦测法等四种方法，并透过经济和人力资源(含现场安装或改修及事故处理)等观点加以比较分析。

I've recently duplicated our producion environment into VM's to allow us to test upgrades and patches without having to arrange outage windows, come in on the weekend or waste a night rebuilding a production server after a patch went bad.

我最近将我们的生产环境复制到VM中，这样我们就可以预先在VM中测试升级和补丁程序，而不再需要在生产机器上安排测试时间，这样我们就不会因为补丁失败而导致浪费周末或者晚上的时间来重建生产系统了。

The active users are determined by users' channel state information and fairness. To obtain closed form solution for power and rate allocation, the algorithm uses the asymptotic Gaussian convergence characteristics of the packet outage probability.

该算法在调度用户时兼顾用户的信道状态信息和公平性，利用误包率严格近似为高斯随机变量的性质得到传输速率和功率的闭式解。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48