错误检测

The causes of producing error results were analyzed at detecting alkaline cell seal characteristics,using phenolphthalein solution.

摘 要：分析了用酚酞试剂检测碱性电池密封性能产生错误结果的原因。

CD-ROM for general data, the higher the recording speed is possible because the CD burner is generally a function of automatic error correction in high-speed recording will be automatically written into the error detection and correction to ensure the smooth conduct of burn .

而对于普通数据光盘来说，较高的刻录速度也是可行的，因为CD刻录机一般都具备自动纠错功能，在高速刻录时会自动检测和纠正写入错误，保证刻录顺利进行。

Fortunately,however,computer designers have developed a method for detecting such errors by adding an extra check bit or parity bit to each 6,7,or 8-bit character represented in storage.

不过幸运的是计算机设计者已研制了一种检测这种错误的方法，这就是对在存储器中表示的每个 6 位，7 位或 8 位字符增加一个附加的检查位或奇偶检验位。

Fortunately,however,computer designers have developed a method for detecting such errors by add an extra check bit or parity bit to each 6,7,or 8-bit character represented in storage.Thus,as you can see,a total of 7,8,or 9-bits may actually be stored.

但幸福的是计算机设计者已研制了一种检测这种错误的方法，这就是，对在存储器中表示的每个6位、7位或8位字符增加一个附加的检查位或奇偶校验位，这样，正如你所看到的，实际存储的是7位、8位或9位。

This paper presents a new spatial error concealment method based on edge detection.

本文提出了一种新的基于边缘检测的空域错误隐藏方法。

In terms of hardware, bring forward the zero-crossing detection to compensate for the phase lag caused by filter.

硬件上通过提前过零检测来补偿加重滤波器带来的相位滞后；软件上加入判断过零点真伪的功能，以及先检测过零点再切换后级逆变桥的方法有效避免错误过零点造成的锁相失败问题，达到了很好的效果。

The Neyman-Pearson approach was used to derive the threshold on the assumption that the false acceptance rate is 10－3,and detects suspicious image after using the method of floating threshold and subjoining three approaches of shaping.the result shows that the correct detect rate is 87% approximately using this method.

在假设错误接受率为10－3的条件下，利用Neyman-Pearson判别规则求出各相机的判别阈值，利用浮动阈值法和加入三个修正措施后进行检测。结果表明，该方法的区域检测正确率为87%左右。

In this paper Ⅰ successfully applied these methods to fault diagnosis, and presenting some new innovative machinery fault diagnosis method; First Ⅰ present a new gear wornout fault diagnosis method, this method use the vibration signal's time-frequency attribute and instantaneous phase undulation to accurately detect gear's fault, and by comparing with the traditional frequency domain analysis method, this method reveals that many nonlinear and nonstationary characteristic exist in gear's vibration, this tell us that if we use frequency domain analysis method without pay attention to the signal's characteristic, we could get wrong diagnostic result; Then Ⅰ present a new bearing fault diagnosis method, this method use ATVFD and Hilbert transform to do envelop demodulation,Ⅰ analyze the envelop with time-frequency method and find out that this method is more accurate then traditional method.Ⅰ also explain that the modulation of the fault to the carrier wave may also be non-stationary and nonlinear; Finally Ⅰ present a cylinder pressure measurement method of diesel engine by means of vibration, cylinder pressure is an important parameter of diesel engine fault diagnosis, the pressure measuring is simplified a lot by this method,Ⅰ also use the ATVFD and time-frequency analysis to realize it.

本文中将上述理论方法成功地应用到故障诊断中去，提出了几点创新性的诊断方法；提出了一种齿轮磨损故障诊断的新方法，该方法利用振动信号能量的时频域分布特征与瞬时相位波动特征可以进行精确的齿轮故障诊断，并通过与传统的频域诊断方法的比较，揭示出齿轮振动中存在的明显的非线性与非平稳特征，说明了不加选择地利用频域分析方法进行齿轮故障诊断很可能会得到错误的诊断结果；提出了一种轴承故障诊断的新方法，该方法利用ATVFD分解与Hilbert变换进行包络解调，并对解调得到的包络信号进行时频域分析，可以实现更加准确轴承故障诊断，说明了故障对载波信号的调制往往也是非平稳与非线性的；提出了一种利用振动信号进行柴油机汽缸内压力检测的新方法，柴油机汽缸压力的变化是柴油机故障诊断的重要参数，利用振动方法可大大简化汽缸压力的检测过程，该方法也是综合利用ATVFD分解与时频域分析方法实现的。

To extend the SIC technique to turbo-coded systems, an iterative IC with ordered SIC at front-end is proposed. To avoid unnecessary computation, the ordering information obtained from SIC front-end is utilized in a low-complexity stopping criterion with high efficiency. In addition to bit-wise interference cancellation, the SIC technique is also applied to code-block-wise interference cancellation. And, only the bits in incorrect blocks should be preceded to the next outer iteration. As a result, huge amount of computational complexity can be saved, and better performance is achieved.

最后，我们延伸序列式干扰消除的概念至有通道编码的系统，与涡轮码解码同时考虑，首先根据排序资讯，提出一提早停止（early-stopping）准则以减少涡轮码解码时不必要的运算，与其他提早停止准则比较，在几乎相同的检测能力下，此准则具有快速及低计算复杂度的特性，接著提出一包含前述准则之递回式干扰消除法，将序列式干扰消除运用在符码及跨级之码块干扰上，并且只有被检定为错误的编码区块讯号需要再进一级的递回检测，此法不仅在效能表现上更为优越，也节省了大量且不必要的计算量。

On account of the high possibility that scanning can cause traffic burst in the network, a method to detect abnormal traffic burst and to avoid rational heavy traffic is proposed at first, and then applied as the basic step to detect worm scannings that cause obvious traffic changes.

由于蠕虫扫描这种异常行为容易引起网络中流量突发，本文先提出一种检测异常突发流量并避免错误判断合理大流量的方法，将其作为检测引起流量明显变化的扫描类蠕虫的基础。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。