查询词典 detection

Generally, the traditional Intrusion Detection Techniques can be categorized into anomaly detection or misuse detection. Based on the mechanism of computer immune system, this paper presents a new anomaly detection technique to detect intrusion into computer system. In this technique, a Markov chain model is used to represent a temporal profile of normal behavior of a process. The Markov chain model of normal profile can be created by learning the historic data of the sequence of system calls produced by privileged processes running on UNIX system.

传统的入侵检测技术，依照所基于的原则不同，通常分为误用入侵检测与异常入侵检测，本文在入侵研究中所采用的计算机系统免疫思想的基础上，提出了一种新的异常入侵检测技术，通过对特权进程系统调用序列的历史数据的学习，用马尔可夫链模型来建立特权进程的正常时态行为轮廓。

Firstly, electrization knowledge related to the research is introduced. After a deep study on various contact loss detection techniques, especially on the electric arcs detection techniques, we draw the conclusion that the untouched detection technique based on phototube sensor can acquire exact contact loss information, and will to be the leading technique for contact loss measurement in future. Secondly, combining with the special railways system in our country, we analyze the cause of the arcs, and the influence on the power supply system and the on board traction drive due to the arcs in detail, and study the arcs' spectrum characteristic. We also analyze detecting principles and put forward with a method - using phototube sensor to detect the contact loss arcs, conceive the configurations and detection flows of the measurement.

文章通过对电气化铁道相关知识的了解及对国内外离线检测技术的深入了解，尤其是对离线电弧检测技术的了解，总结出了基于光电传感器的非接触离线电弧检测系统能够得到准确的弓网离线情况，并且是国内外检测技术的发展方向；文章详细的分析了离线电弧产生的原因，电弧对机车牵引动力的影响情况，研究了我国铁路系统中离线电弧的光谱特征分布；分析了系统的检测原理，提出了采用光电传感器实现对离线电弧进行检测的方法，并设计了"电力机车弓网离线电弧检测装置"的检测功能和管理功能，规划了系统的组成结构及检测流程。

In case of simple background, we use image difference for motion region detection, and then adopt the original Chan-Vese model for face contour detection and tracking, while in case of complex background, we use Wronskian change detector for motion region detection, and then adopt the modified Chan-Vese model for face contour detection and tracking.

对于简单背景情况，首先利用图像差分进行运动区域检测，然后在运动区域内采用Chan-Vese模型检测人脸轮廓，并根据其定位结果计算下一帧中新的运动区域和提取人脸轮廓；对于背景复杂的情况，则用朗斯基变化检测算子来首先检测出运动区域，然后在运动区域内采用改进的Chan-Vese模型检测人脸轮廓，并根据其定位结果计算下一帧中新的运动区域和提取人脸轮廓。

On the basis of study on two projects:"10-DOF ultrasonic detection system for complex surfaces part" and "Ultrasonic water-logging automatic survey system for rods", this thesis studies the technologies of ultrasonic measurement, kinematic and dynamic modeling of 10-DOF ultrasonic system, real-time sensitivity auto-adjusting, integrated technology of ultrasonic measurement, surface construction and ultrasonic detection for complex surface parts and rods, thus improving the accuracy and efficiency of ultrasonic detection for parts of complex surfaces. Meanwhile, an auto-detection system for metal rods with rough surfaces and bad columniform accuracy is presented for the first time.

本文结合&10自由度复杂曲面超声检测系统&和&棒材水浸超声自动检测系统&两个项目的研究，主要开展了超声测量、检测机器人运动学和动力学建模、误差补偿、灵敏度自动补偿和曲面构件超声检测一体化技术和轴棒类构件超声检测一体化技术的研究工作，进一步提高了复杂型面构件超声检测的效率和精度，并首次针对表面粗糙、圆柱度较差的金属轴棒类构件开发出了高效率的自动化检测设备。

On the basis of retrospecting the development of intrusion detection technology, the problems incurrent intrusion detection systems are analysised. By comparing several kinds of intelligent methods in intrusion detection including artifical neural network, artifical immunity and data mining, we present that data mining is a perfect method to construct normal profile of protected system which is used in anomaly detection.

入侵检测作为一种主动防御手段，在其发展的过程中，有些问题一直没有得到很好的解决，如对未知攻击的识别与界定以及受保护系统正常模式的建立等，目前国内外普遍采用在异常检测中引入智能化方法来解决这些问题，例如采用神经网络、人工免疫、数据挖掘技术等等，其中数据挖掘是目前比较理想的一种方法。

In this study, used Multiplex-PCR method to detection AAC of AAC_ITS and AAC_rpoB, used Multiplex-PCR method to detection BG of BG_ITS、BG_gyrB and BG_rpoD, used Multiplex-PCR method to detection PCH of PEC_ITS, idgA and idgB, used Multiplex-PCR method to detection AAC、BG and PCH of AAC_ITS、BG_ITS、PEC_ITS and idgA. The result reveals which were designed primer of specific can detect the existence of different phytopathogenic bacteria. These technique will use to develop the standard operation procedure of phytopathogenic bacteria disease in orchids.

在多引子组之研究上，AAC_ITS及AAC_rpoB之组合可用於褐斑病菌之检测；BG_ITS、BG_gyrB及BG_rpoD之组合可用於叶斑病菌之检测； PEC_ITS、idgA及idgB之组合可用於软腐病菌之检测；AAC_ITS、BG_ITS、PEC_ITS和idgA之组合则可用於三种兰花细菌性病原之检测，分析结果显示所使用之引子组可以快速、灵敏且专一性的检测细菌性褐斑病、细菌性叶斑病及细菌性软腐病，并且缩短检测时间，未来将可以应用於兰花细菌病害之监测。

For contrast experiments, k-means and DBSCAN algorithms are also implemented using Visual C++ 6. 0. We conducted a series of experiments, including the experiment of the correctness of clustering and outlier detection, the experiment of the precision of clustering and outlier detection. The experiment of the runtime, the experiment of the effect of clustering and outlier detection on parameters, the experiment of the impact of clustering and outlier detection precision by the order of data input, and the experiment of the effect of the algorithm validness by the density character of dataset.

本文使用Visual C++ 6.0实现了基于距离的聚类和孤立点检测算法、k-means算法和DBSCAN算法，做了大量的对比实验，包括聚类算法和孤立点检测正确性实验；聚类算法和孤立点检测精度实验；算法执行时间实验；参数对聚类和孤立点检测结果的影响实验；数据输入顺序对算法聚类和孤立点精度的影响实验；数据集密度对算法有效性的影响等。

Traditional intrusion detection system is generally used pattern matching technology, but because of its characteristics of the technology itself,it has some shortcomings,such as large amount of computation and low detection efficiency,and detection technology based on protocol analysis do these better compared with pattern matching technology.Its use of agreed rules and the whole conversation in the context of the process of relevance,improveing the speed of intrusion detection system,and reducing the rate of under-reporting and misreporting.

传统的入侵检测系统一般都采用模式匹配技术，但由于技术本身的特点，使其具有计算量大、检测效率低等缺点，而基于协议分析的检测技术较好的解决了这些问题，其运用协议的规则性及整个会话过程的上下文相关性，不仅提高了入侵检测系统的速度，而且减少了漏报和误报率。

Its detection means much more reliable than execute (although not as functional execute complete) Services Description Table hook detection and recovery process detection strong powerful drive testing process scrapping hidden among API hook detection drive dump generate reports p . s, just a little messed Vista, results from the system BSOD recovery, hoho, it appears Microsoft's core protection or first-hand ...

其检测手段比IceSword可靠得多(虽然功能还不如IceSword齐全)服务描述表钩子检测和恢复强大的进程检测强大的驱动检测隐藏进程杀除 API钩子检测驱动转储生成报告p.s，刚才Vista把玩了一下，结果系统从蓝屏死机中恢复，hoho，看来微软的内核保护还是有一手的。。。

In the method, the polyclonal antibodies are obtained by utilizing syntactic quinoxalone antibiotics multi-cluster antigen immunization; the coupling compound of the half antigen of the quinoxalone antibiotics and an egg-white protein OVA is taken as an envelope antigen; the quinoxalone antibiotics is taken as a standard; the indirect competitive enzyme-linked immune detection method for the quinoxalone antibiotics in animal food is established; a rapid and high efficient detection means is provided for the residues of the quinoxalone antibiotics in the animal food; because the polyclonal antibodies are adopted, the cost is low, and the stability and the repeatability are good; the detection limit (IC is smaller than 90) is 0.0126 ng/ml, the median inhibitory dose (IC is smaller than 50) is 0.52 ng/ml, and the detection range (IC is smaller than 20 to 80) is 0.04467 to 14 ng/ml.

本发明利用合成的喹诺酮类抗生素多簇抗原免疫得到多克隆抗体，以喹诺酮类抗生素半抗原与卵清蛋白OVA的偶联物作为包被抗原，以喹诺酮类抗生素为标准品，建立动物性食品中的喹诺酮类抗生素的间接竞争酶联免疫检测方法；为喹诺酮类抗生素在动物性食品中的残留检测提供了快速高效的检测手段，由于采用的是多克隆抗体，费用较低并且稳定性和重复性较好，检测限(IC 90 )为0.0126ng/ml、半数抑制量(IC 50 )为0.54ng/ml和检测范围(IC 20 ～IC 80 )为0.04467～14ng/ml。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。