表征

Based on physical and psychological theories of driver's dynamic vision, combined related research methods and conclusions in home and abroad, the basic modes and characteristic parameters of driver's visual behavior were discussed systemically. Several indexes were determined as basic characteristic parameters of dynamic visual search mode, including fixation duration, visual angle, visual search scope, saccade amplitude and saccade velocity.

在驾驶员动态视觉生理学和心理学理论的基础上，结合国内外相关领域的研究方法和研究结论，对驾驶员视觉行为的基本形式和表征参数进行了系统的论述和分析，确定以注视持续时间、视角、视觉搜索广度、扫视幅度和扫视速度几个指标作为动态视觉搜索模式的基本表征参数。

A review of river management history in various countries is used in this thesis to discuss the future development trends of river management and the relationship between river health and river management.Based on the characterization and assessment of river health, Five components of stream condition are presented in this thesis to characterize river health: water quality, aquatic life, physical form, hydrology and streamside zone. It is obtained by comparing the methods and criteria that have been developed by others and reviewing the river assessment practices in various countries. Accounting for the features of urbanization region in plain river network, an indicator system for river health assessment which provides scores for 5 subindices and 17 indicators is established. With almost 200 stream reaches in Shanghai as objective of study and Liwa stream and Zhangjiabang Creek as case study, the application of river health assessment in the planning, baseline survey and post-project appraisal of river management is explored by collecting historical literature and field monitoring. Consequently, some suggestions to improve river management effectiveness are presented from the angle of river health.

本文回顾河流管理漫长历程并指出当前国际发展趋势，进而辨析河流健康状况与河流管理的关系；以河流健康状况的表征和评价为核心，通过对国外RIVPACS、AUSRIVAS、IBI、RCE、ISC等河流健康状况评价方法的分析和比较，以及对美国、英国、澳大利亚、南非等国家河流健康状况评价实践的总结，尝试从理化参数、生物指标、形态结构、水文特征、河岸带状况5个方面全面表征河流健康状况；结合中国东部平原河网地区自身特点，通过评价原则、评价指标、评价标准、评价权重确定等步骤，初步构建了包含河流水文、河流形态、河岸带状况、河流水质以及河流生物5个一级指标(共17个指标)的河流健康状况评价指标体系；在此基础上，采用资料收集与现场实测相结合的方法，以上海近200条中心河道为研究对象，以丽娃河和张家浜为典型案例，分别就河流健康状况在河流管理规划、现状评估以及后评估中的应用进行实证研究，并尝试探讨如何从这三个阶段利用河流健康状况评估改进河流管理的对策。

It introduces the way for knowledge expression in subjective probability terms and makes a further discussion on the significance and methods of horizontal dimensionality and vertical dimensionality of organization knowledge in subjective probability terms.

提出基于心理学的知识定义，分析知识的信念特征；给出基于主观概率表征知识的方法；深入探讨基于主观概率的组织知识的纵向维度分析和横向维度分析的意义及其表征方法。

By azo compound became chromophore monomer disperse red -19, and through Sulfonyl of the compound was synthesized by the C, and through 1HNMR its structure was characterized, the results show that the synthesis of compounds C of very high purity, synthetic polymers can meet at the request of the monomer, but also of the compound D, through 1HNMR its characterization, showed that high purity compounds D, is expected to be functional after the adoption of To all the excellent performance PEEK electro-optic polymer materials.

本文通过偶氮化合成了生色团单体分散红-19，并通过磺酰化反应合成得到了化合物C，并通过核磁共振氢谱对其结构进行了表征，结果表明，所合成的化合物C的纯度非常高，完全能满足聚合物合成时对单体的要求，同时也合成了化合物D，通过核磁共振氢谱对其结构表征，显示化合物D纯度很高，应有望通过后功能化合成出各种性能优良的聚醚醚酮电光高分子材料。

Borges imagined the possibility of an animal classification system that was vastly different from our common classification system – that of kingdom, phylum, genus and species, or that of wild, domestic, hydrophytic and terricolous – to imply that the set representation system was just one among infinite possible systems, or to imply the existence of another episteme.

博尔赫斯想像着一种与我们常用的动物分类法——比如动物学的类、科、纲、目，或者野生的/家养的、水生的/陆生的——远远不同的另一种分类的可能，暗示着既定的表征系统只是无数可能的表征方式中的一种而已，或者另一种知识型的存在。

In general, the layered feature of electrical structure is analyzed first of all for defining preliminarily whether a DES exists in the target area or not. Then the contours of resistivity in resistivity tomogram are analyzed from the deep to the shallow part. If they extend upwardly from the deeper part to shallower one and shape into the integral dislocation, great flexure or gradient zone, it would indicate there exists the DES reflecting a buried fault. At last, horizontal tracking needs to be carried out for defining the trend of the DES reflecting a buried fault.

一般情况下，在分析时，首先分析电性结构的层状特征，以此初步判定探测区域中是否存在电性结构间断面；其次，要由深入浅分析电阻率等值线，如果它们能够从探测剖面的深部向上延伸到浅部，且存在等值线的整体性错断、强烈弯曲或梯度带，则表明存在表征隐伏断裂的电性结构间断面；最后需进行水平追踪分析，以确定表征隐伏断裂的电性结构间断面的空间展布。

As an example, the transformation parameter of MZC for various scales in different segments of ultrasound medical image is analyzed to realize the ultrasound image segmentation.

回顾了信号的一维小波变换多尺度过零点表征的完全稳定的重建理论，分析了MZC表征与小波各尺度分解的平均功率的关系；并利用医学超声图像的不同区域MZC随尺度的变化曲线参数，实现了医学超声图像的区域分割。

After a further analysis based on the empirical results,a trial probe on the cognitiveprocessing mechanism of the problem representation of the word problem in two types of MLDwas made by the author.The MRD performed much poorer than the MLD only in the mostdifficult equation listing of word problem and the medium and most difficult problemrepresentation of word problem,which showed no difference in computation and comprehensionof simple meaning of the problem,but the gap between two types of MLD became wide as afunction of difficulty and cognitive loading.It indicated that the MLD only had some advantage over MRD for they used more cognitive skills to solve the problem.

基于以上实验的结果，对两类数学困难小学生的应用题问题表征的认知机制作如下推断：混合型数学困难学生仅在高难度水平的应用题列式成绩和中高难度水平应用题问题表征水平上比单纯型数学困难学生得分显著低下，表明两类数学困难小学生在计算能力与理解简单题意的能力上并无差异，但随着难度提高，认知负荷加重，两类数学困难学生在应用题解题上的差异得以突显，表明当需要运用更多的认知能力解决问题时，单纯型数学困难学生比混合型困难学生更具优势。

XRD and SAED were used to characterize the crystalline phase, and TEM was used to characterize the morphology, the particle size and the agglomerative state of the formed nano-materials.

用XRD和SAED表征生成物的物相，TEM表征形成二氧化锡纳米粒子的形貌、尺寸和聚集状态。

One of the astriction maybe is the lack of a study on the biomechanical performance for vascular prostheses and the reasonable test methods.

我国研究的各种产品尚不能达到满意的临床效果，限制我国人造血管开发的因素是多方面的，其中严重缺乏对人造血管的生物力学基本性能的研究可能是主要原因之一，因为关于纺织基人造血管性能表征的深入研究，以及关于各表征指标的测试方法和测试手段的研究，在我国几乎是空白的。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。