But the mean time between failuresand the mean time to repair, which are commonly difficult to know, are by themselves quantities of practical interest, and can be even more important than system availability.
在可修复系统中，可用性作为一种可靠性测度，其指标可用度是基本的；然而从实际应用角度来说平均无故障工作时间和平均修复时间有时显得更为重要，却又往往难以得知。
If the 2-year-old child still will not post a word that is sure to speak late, and may wish to go to the hospital to check, make check should go to the hospital, first of all, the hearing should be checked, followed by inspection organs of speech, as indicated in the palate whether implicit cleft palate, tongue tie has a short, tongue flexibility Events, teeth, uvula, pharyngeal wall, such as whether or not the problem, finally, to check the spirit of neural development, the availability of mental retardation, because mental retardation is often accompanied by language growth retardation, in the absence of the above problems, parents should actively teach him to speak. 2, normal physical development of boys a year and a half value: weight low: 8.6, mean: 10.9, high-value: 13.2 your baby weight standards indicate the normal growth and development of 3, to provide a recipe for reference: Breakfast:菜粥, milk or eggs Lunch: Black rice, minced meat, green vegetables, onion, liver snacks: Cornish packet or biscuits, soya milk.
如果2岁的幼儿仍然后一个字都不会说，肯定是说话晚了，不妨去医院检查一下，应去医院做检查，首先，应检查听力，其次检查发音器官，如上腭有无隐性腭裂，舌系带短否，舌体能否灵活活动，牙齿，悬雍垂，咽后壁有无问题等，最后，要检查神经精神发育情况，有无智力障碍，因为智力低下往往伴有语言发育迟缓，如无上述问题，家长应积极教他说话。2、正常一岁半男童体格发育值：体重低值：8.6、均值：10.9、高值：13.2您孩子体重已达标说明生长发育正常3、提供一份食谱供参考：早餐：菜粥、牛奶或鸡蛋午餐：烂饭、肉末、青菜、洋葱、猪肝点心：菜肉包或饼干，豆浆。
May:You mean on product availability, reliability and price?
你是指产品的获得性？可信度？还有价格？
Considering the availability of current information and limitaion of time, this paper did not mean to cover the whole contents of corporate communication. It only addressed several key parts of corporate communication, mainly including communication channels, communication functions and communication patterns.
鉴于被调查企业资料的可获得性和分析时间的局限性，本文所述并非企业公司沟通的全部内涵的调查分析，只是其中必不可少的几个关键环节，主要涉及沟通渠道、沟通职能及沟通模式。
In this paper, the theory, algorithm, and experiment of automatic object detection and tracking are studied in depth. It is firstly pointed out that the essential of Mean Shift method is a special Newton-Gaussian method. A new method named Fast Mean Shift is established to stretch the conservative step of Mean Shift method. The convergence and validity of this new method are proved in theory. And it is also proved that the convergence speed of Fast Mean Shift is faster than that of Mean Shift. The contrast experiments of searching the maximum possibility density of random of data sets in plane and 3D space are done. The results show that this new method can reduce the iterations greatly. A new object tracking method based on Fast Mean Shift is built to improve the object tracking performance, which is shown in the face tracking experiment with the tennis sequence provided by the Ohio State University, and the car tracking experiment with the car sequence provided by Kalsruhe University. The face trcking experiment with highly noised images show that the object tracking method based on Fast Mean Shift has strong anti-jamming ability. A new fast color object detection technology based on characteristic color is established, which use characteristic color distribution to compute the characteristic color vector of any area in an image quickly. With the high performance search method, the fast object detection is achieved. At last, using object tracker based on Fast Mean Shift and color object detector based on characteristic color with the Kalman filter, PID controller, searial communication and other technologies, automatic object detection and tracking system with control system is built. The availability and anti-jamming ability of this system are verified by some object detection and tracking tests in different scenes.
本文对目标自动识别与跟踪进行了理论、计算、试验三方面的深入研究，主要包括：首次指出了目标跟踪技术中常用的均值迁移方法的本质为一种特殊的高斯-牛顿方法，改进了均值迁移方法步长取值保守的弱点，建立了快速均值迁移方法，证明了该方法的收敛性、有效性以及收敛速度优于均值迁移方法；进行了平面和3维随机分布数据集的最大概率密度搜索对比试验，试验结果表明，快速均值迁移方法大大减少了迭代次数；建立了基于快速均值迁移的目标跟踪方法，利用俄亥俄州立大学提供的乒乓球序列图像和卡斯鲁厄大学的汽车序列图像，对人脸和汽车目标跟踪性能分别进行了对比试验，并进行了高噪声人脸图像目标跟踪试验，结果表明，基于快速均值迁移的目标跟踪方法有效提高了目标跟踪性能，具有很强的抗干扰能力；建立了一种新型彩色目标自动识别方法，采用特征色彩分布函数实现了对任意图像区域特征色彩矢量的快速计算，建立了高效的搜索方法，实现了彩色目标的快速识别；将基于快速均值迁移方法的目标跟踪方法、基于特征色彩的目标识别方法与卡尔曼滤波、PID控制、串行通讯等技术结合，建立了带有控制系统的快速目标自动识别与跟踪系统，并在不同场景下进行了目标自动识别与跟踪试验，验证了快速目标自动识别与跟踪系统的有效性和抗干扰能力。
Then the performance measures of the systerm are analyzed respectively on the point of queueing theory and reliability, then the mean queue length, the availability, the mean time to first failure of the systerm and the reliability of laplace transform are derived.
然后分别从排队论角度和可靠性角度分析了系统的性能，得到了平均队长、可用度、首次故障前平均时间、可靠度的拉普拉斯变换等指标。
The yield on BAA corporate bonds, a proxy for general corporate credit availability, is at 8 per cent, a full percentage point higher than its 10-year mean, while emerging market bond spreads are also about a point above their average.
BAA级公司债券的收益率普通企业信贷可用性的代理指标为8%，比10年平均水平高出整整1个百分点，而新兴市场债券息差同样较其平均水平高出1个百分点。
Especially, they cannot describe all of confidentality, integrity and availability in the mean time.
避免拒绝服务研究难度大，进展甚微，目前这方面还没有公认成功的模型。
Using the method of stochastic process, the relation of system states is investigated, and a series of reliability indices are obtained such as reliability, availability, and the mean failure times.
利用随机过程的方法，研究了该可修系统状态之间的转移关系。在该模型的基础上得到了系统可靠度、可用度、平均故障次数等常用可靠性指标。
It is assumed that each component of the system has normal, abnormal and failure three modes (the normal mode and abnormal mode both are operative mode), and none component of the system can attain the failure mode without passing through the abnormal mode, and the failure component can not be repaired immediately, because of certain administrative actions, and the component`s life time, the administrative time both have exponential distribution, and the component`s repair time has general distribution. By using total probability decomposition, Markov renewal process theory, Lapace transform and Lapace-stietjes transform, Some reliability characteristics are also obtained, such as the distribution of time to system failure and its mean, pointwise availability of the system at time t and steady-state availability.
假定系统的两个部件相同且相互独立，每个部件都具有正常、异常和故障三个状态(其中正常和异常状态是可工作状态)，部件依次由正常经过异常到达故障状态，当系统中某个部件需要修理的时候，由于管理上面的原因而存在管理上的延迟，且部件的寿命、修理管理延迟时间均服从负指数分布，修理工对部件的修理时间服从一般分布，利用全概率分析、马尔可夫更新过程理论等方法和Laplace变换、Laplace- Stieltjes变换等工具，得到了系统的首次故障前时间分布以及系统可用度等可靠性指标。
The process of using mechanical systems was described with a failure sequence and a maintenance sequence, sequentially the dynamic failure frequency, availability, failure rate and mean life of the mechanical systems and their elements were computed.
利用失效概率序列和维修序列的运算描述了机械系统的使用过程，从而计算出系统及其元件的动态可靠性指标：故障频率，有效度，失效率和平均寿命。
By concentrating on Mean Time to Repair (MTTR) rather then Mean Time to Failure (MTTF), we find that quick recovery reduces recovery time and thus offers higher availability.
通过关注平均修复时间，而不是平均故障时间，发现快速的恢复减少了恢复时间，因而提供了更高的可用性。
Repairable systems reliability is an important branch of the reliability theory. For a repairable system, availability, reliability and mean time between failures are all important indexes.
可修系统可靠性分析是可靠性理论的一个重要分支，对可修系统而言，可用度、可靠度、平均工作时间等都是其重要的性能指标。
Finally obtain the mean time between failures (MTBF), mean time of repair failures (MTTF), inherent availability (A) as well as reliability index such as reliability and failure rate function according to the distribution model.
最后根据分布模型计算得到该加工中心的故障间隔时间（MTBF）、平均维修时间（MTTF）、固有可用度A以及可靠度和失效率函数等可靠性指标。
The reliability evaluation indices of bus arrangement systems are availability, unavailability, failure frequency, mean time between failure, mean time to repair, failure rate and repair rate.
文中计算的电气主接线系统的可靠性指标是：可用度，不可用度，故障频率，平均相邻故障间隔时间，平均修理时间，故障率，修复率。
This provides an availability figure based on mean time to failure information in days, and mean time to recover information in hours.
它提供了一个基于数天内的平均失效时间信息和数小时内的失效恢复信息的可用性特性。
If you have mean time to failure and mean time to recovery information, enter that and the spreadsheet will calculate the availability for you in the " Calculated availability contributions " lines.
如果有平均失效到达时间和平均恢复时间信息，输入到表格中将计算出“计算出的可用性贡献”行。
Using vector Markov process theory and Laplace transform method, we obtain the Laplace transform of the reliability, the mean time to first failure, the steady-state availability and the steady-state failure frequency and so on.
利用向量Markov过程理论和Laplace变换的方法，求出了系统可靠度的Laplace变换，系统首次故障前平均时间的表达式，系统的稳态可用度和稳态故障频度等可靠性指标；
These cheap methods of self-recovery in the article are new approach to high availability and reliability, extend the time to failure and shorten mean time to repair.
实验结果表明，本文所提到的软件自恢复策略是一种具有高可行性和可靠性的方法，这种方法延长了软件的失效时间并且缩短了软件的修复时间。
On this basis a computer modeling and assessment tool is developed to test and analysis the system availability, system performability, the threshold and measured value of MTBF (Mean Time Between Failure) of the parts.
并据此开发了一个计算机可用性建模与评估工具，以实现对系统可用性、可运行性、部件MTBF（MeanTimeBetweenFailure）的阈值与实测值等多种评测指标的测试与分析。