定量分析

Objective: Attenuation correction is one of the most important corrections in the quantification of positron emission tomography.

目的：在正子断层扫描之定量分析中，衰减修正为最重要的修正之一。

Previous study shows that GPS precipitable water vapor and local precipitation have close relationship.

该文利用 2 0 0 2年"973"项目安徽GPS外场试验和 2 0 0 0年北京GPS/VAPOR试验积累的资料对GPS遥感的大气可降水量与局地降水之间关系进行了定量分析。

The model is given out after having studied the existing measure of secure and stable control and summarizing the lack of itThis model is based on the on-line emergency control framework of "On-line Preconceive Calculation and Real-time Matching" of EEAC and performs the effective control of system through the integration of the Whole Model Stability Quantification Analysis Software with EMS and the Area Energy Stability Control System.

这种安全稳定控制是将全模型稳定定量分析软件、电网EMS系统和区域电网稳定控制系统三者有机地结合在一起，对系统实现有效的控制。

In the paper, the importance of FTA is described, the quantitative analysis method of the FTA is introduced in detail. Then the paper takes a vehicle control system as the research object, expatiates the forming of the CPU board fault tree, the establishing of the mean event fault tree and the obtaining of the mean event fault probability, and realizes the element level fault orientation on the CPU board of the vehicle control system. The test indicates that the method is both valid and correct.

文章在介绍故障树分析法重要性的基础上，较详细地介绍了FTA的定量分析法，并以某车辆控制系统为研究对象，从CPU板故障树的构建、各中间事件故障树的建立和各子事件故障概率等方面出发，实现了车辆控制系统CPU板元件级的故障定位，实验表明了该方法的有效性和正确性。

The dissertation includes the work as follows: Firstly, we present a random graph model with spatial reuse for a dense MANET which using directional antennas. The analytic formula of several important performance parameters for the MANET are obtained under the DSR routing protocol, such as the average flooding distance, the probability generating function of the flooding distance, the probability of a flooding route to be symmetrically valid, the average time to find a symmetrically valid route and the cost to successfully route a data packet to its destination. We compare the two models with spatial reuse and without spatial reuse by evaluating these parameters. It is shown that the spatial reuse model is much more effcctive in terms of the performance of the dense network with directional antenna, because the bigger is the degree of spatial reuse, the smaller is the average flooding distance.

在定向天线技术的支持下，建立了移动自组网络空间可重用的贝努利随机图模型，获得了DSR路由协议下平均泛洪距离的解析公式和泛洪距离的概率母函数：给出了有效对称路由概率、发现有效路由平均时间、成功路由代价等关键性能参数的解析分析；在网络性能参数定量分析的基础上，对空间可重用和无重用的网络进行了比较分析，结果显示空间重用度增大，则平均泛洪距离、路由发现时延、网络代价减少。

This paper investigates the relationship between agricultural development and price fluctuation of agricultural means of production using the quantitative analysis methods such as co-integration analysis, linear regression, logistic regression and the historical data from 1973 to 2003. We find some causal relationship between them, and get the prognosticate model.

本文运用协整分析、线性回归、logistic回归等定量分析方法，采用1973~2003年的历史数据，对安徽省农业生产资料价格波动与农业总产值的影响关系进行了深入的实证分析，发现了两者之间存在的一些内在联系和制约关系，并给出了反映两者关系的预测模型。

Sea ice severe degree and disaster in Bohai Sea from 1950 through 2007 promulgated by State Oceanic Administration People's Republic of China has been summarized. According to these reports and bulletins involved with sea ice severe degree and disaster, the statistical means of 5-year moving average are applied, the feedback of sea ice disaster to the societal activity in every National Five-year Plan has been exhibited, the relation between sea ice disaster and sea ice severe degree has been quantificationally analyzed. Some conclusions have been derived as follows: sea ice disaster appeared proportionably to industrial activity and sea ice severe degree, but inverse proportionnably to the understandings of cognition of defending in sea ice disasters; so that the weaken sea ice conditions could not inevitably result in the loosening of sea ice disaster.

通过归纳整理1950年以来渤海海冰冰情等级以及国家海洋局公报内的海冰灾害，并应用五年滑移平均，以反映中国"五年计划"的社会活动与海冰灾害之间的响应，定量分析海冰灾害发生率同海冰冰情等级的关系，发现工业活动的频繁程度同海冰灾害发生率成正比；人类重视程度同海冰灾害发生率成反比；海冰冰情等级与海冰灾害发生率成正比；当海冰冰情等级减轻时，海冰灾害发生率并不一定减少。

Therefore,this protoplast system could facilitate rapid and quantitative analysis for siRNA-mediated interference on plant virus infection.

因此认为，烟草原生质体系统有利于快速和定量分析小干扰RNA介导对植物病毒的抑制作用。

Methods The qualitative and quantitative analyses of aerobic floras of tonsil surface were conducted in psoriatic patients and health controls.

方法用常规方法对患者的扁桃体表面分泌物进行菌种的定性和定量分析。

On the basic of this theory, the quantitative analysis model of psychological warfare unit effect is established and analyzed.

本文简要阐述了心理战的本质特征和作用机理，并对心理战效应过程进行了分析，在此理论基础上建立并分析了心理战个体效应定量分析模型，从定性和定量两方面对心理战进行了研究和探讨。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。