查询词典 based

Space curve is one of the basic elements in geometric modeling, and its effective representation is the basis of modeling. Parametric representation based on features is a kind of high-level representation including semantic information. In Chapter 4, para- metric representations based on features for free form space curve are investigated, and a parametric model for the loop of plain knitted fabric is established, in which 5 parameters with practical meanings are used to represent the shape of a loop and the relationship between loops. A new shrinkage prediction method for knitted fabric are proposed based on the parametric representation and energy minimizing. Experimental results on some plain knitted fabrics illustrate the feasibility of the proposed method.

空间曲线是造型中最基本的几何元素之一，对其有效的表示是造型的基础，而特征参数化表示是其中一种包含语义信息的高层次表示，本文对空间自由曲线的特征参数化表示进行研究，建立了一种针织物线圈的特征参数化几何模型，采用5个具有实际意义的参数表示织物线圈的几何形状及线圈之间的位置关系，并将该模型与能量极小化的方法相结合，得到了一种能较好地预测针织物缩水率的新模型，对随机选取的一些针织布缩水预测实验表明了算法的可行性。

Virus removal efficiency is determined by the real time PCR and inactivation efficiency is determined by cell-based infectivity assay.Enveloped DNA virus removal and inactivation: Real time PCR indicated that method based on gold magnetic particles coupled with antiserum has shown great superiority on virus removal. Cell-based infectivity assay indicate pasteurism has shown superiority on virus inactivation.

对两种指示病毒分别进行巴氏灭毒和偶联抗血清金磁颗粒处理，实时荧光定量PCR检测核酸变化确定病毒的去除效率，同时进行病毒的细胞感染力实验确定病毒的灭活效率，结果显示：在对DNA有包膜病毒的去除能力上，金磁颗粒法明显优于普通的巴氏灭活法；在对DNA有包膜病毒灭活能力上，巴氏法明显优于金磁颗粒法。

PECH based PUs showed higher phase separation than that of PPG base PUs owing to that the -Cl groups in PECH reduced the flexibility of molecule chain and hindered the formation of hydrogen bonds between ether groups in soft segments and -NH groups in hard segments. As a result, PECH based PUs have lower free volume content, diffusion coefficient and equilibrium adsorption of CO〓, benzene and ethanol through them than through PPG based PUs.

聚环氧氯丙烷醚聚氨酯的氯基降低了链段柔性，妨碍了软段中醚基与硬段中氨基的氢键作用，导致其相分离程度较聚环氧丙烷醚聚氨酯大，并使CO〓、苯和乙醇蒸汽在聚环氧氯丙烷醚聚氨酯中的渗透系数和扩散系数较聚环氧丙烷醚聚氨酯小，而偏离费克扩散的程度大。

Firstly, based on literature review and qualitative surveys, the modified risk factors that affecting the effect of hypertension management in the underdeveloped rural area were identified, the specific questionnaire and SIPHF were developed, and the first cross-sectional study was conducted. Secondly, the surveyed population were then divided into intervention group and control group, and periodic health education and following up were conducted to the intervention group for six months; Thirdly, the second cross-sectional study was conducted to evaluate the effect of intervention by qualitative and quantitative survey, the indicators include the knowledge awareness rate and the right belief rate for hypertension control, and the behavior prevalence related to hypertension intervention, the disease burden, the life quality and clinical outcomes resulted from hypertension, the dynamic tendency of blood pressure and the patients\' satisfaction. And the factors related to the effect of hypertension management was evaluated; Finally, SWOT analysis was conducted to evaluate the factors affecting the intervention process and effect, based on the results of qualitative and quantitative surveys on the factors related to effect of the intervention, and to provide evidence-based suggestions for SIPHF improvement and policy-making in the underdeveloped rural area in China.

首先，在文献综述和定性调查的基础上，确认影响欠发达地区农村高血压患者管理效果的因素，设计调查问卷和高血压管理方案，并开展第一次横断面调查；其次，将调查乡镇分为试验组和对照组，对试验组患者开展健康教育和定期的随访管理，对照组患者则按常规工作对待；第三，实施规范化管理6个月后，采用定量调查和定性访谈等方式评价管理效果，通过第二次横断面调查，对试验组与对照组干预前后的危险因素变化情况及干预效果进行评估，评估内容包括患者的知识、信念和行为等与高血压防治有关的危险因素指标，及其产生的疾病负担、生活质量、临床指标、血压水平变化趋势、干预组满意度等结果指标，并分析影响高血压干预效果的因素；最后，采用SWOT分析，根据定性和定量调查结果分析该类地区今后全面开展该项工作所面临的内部和外部环境因素，并为欠发达地区农村高血压规范化管理方案完善及政策制定提供循证建议。

The embedded video encoder can process A/D transform of video signal, video compressing, network protocol processing and camera controlling. Hence the hardware of encoder includes H.263 Video Encoding Unit and Network Protocol Processing Unit based on TM1300, Network Interface Unit based on RTL8139C chip and Peripheral Extending Unit based on W77E58 which deals with camera controlling.

硬件设计由以下四个单元组成：以 TM1300为核心的视频编码单元和协议处理单元；采用 RTL8139C芯片的网络接口单元；以及单片机 W77E58为核心的完成摄像头控制和透明数据传输的外围扩展单元。

As the communication net work of which it is based is changing from circuit switching based ISDN and DDN to packet switching based IP network, the object market will change from large cooperation and government to little work group and personal desktop conference, and finally to family, the function has developed from the simple Video Conference to integrated services such as remote learning system, remote monitoring system and remote medical system etc, video conference will be in a new development generation.

顺应三网合一的发展趋势，由于交互式多媒体通信所依附的传输网络基础，由电路交换式的ISDN和专线网络向分组交换式的IP网络过渡，针对的市场目标将由大型公司、政府机构的会议室向小型化的工作组会议室、个人化的桌面延伸，并最终发展到家庭，功能也已由原先单纯的电视会议功能发展成远程教学系统、远程监控系统、远程医疗系统等多方面的综合业务。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

The constitutionalism is based on a public sphere with negative law as rule, so that it transforms the allocation of the modern political value logically, i.e. traditionally ,only the reasonable value is legitimate, whereas in the constitutionalism, only the legitimate value is reasonable. In other words, it has changed the standard of value from the former positive logic, based on the moralization of human nature, to the negative one, based on the legalization of human nature. Rawls and Hayek demonstrate this logic conversion from different ways separately.

由于宪政的法律制度预设的乃是一个否定性的以法律为尺规的公共领域，因此就把近现代有关政治价值的定位从逻辑上进行了一番改造，即传统政治价值形态那里所表述的是，只有合理的价值才是合法的，而宪政的法律制度则反过来表述为，只有合法的价值才是合理的，或者说，它把价值标准从过去那种以人的本性的道义化为基础的肯定性逻辑，转变为以人的本性的合法性为基础的否定性逻辑。

According to recent situation of control point data management in practicalness,to tendency and to actual requirement,this essay investigates the organization and input of system data based on MapInfo,based on hard and soft facilities of the computer,based on the technology of GIS,at the same time,this essay puts forward to radical conceptions and methods of the management system of control measurement data.

结合生产实践对控制点测量成果管理的现状、趋势及实际需要，依据GIS的基本原理，以计算机硬软件设备为基础，以地理信息系统为手段，主要针对MapInfo这一系统平台具体讨论了系统数据的组织及入库，提出了GIS在控制点测量成果管理系统的基本构想和方法。

Based on careful analysis to the users' requirements of real-time interactive multi-view video service, this paper tackles several key practical technologies. To provide flexibility to special video snapshot decoding, the images from different views are predictively re-encoded based on the view correlation. Both the unicast and IP multicast techniques are employed in our system to provide interactive video service based on different system requirements.

然后本文根据系统开发的关键问题，对关键技术进行了深入研究，系统采用了transcoding实时编码技术以解决特效视频快照的解码效率问题；提出了分别基于单播和IP组播技术的系统交互策略，用以在不同应用环境下为用户提供可交互的多视角视频服务；提出了特效视频的automatic组播策略和on-demand组播策略，以达到高度可交互性与合理带宽占用的平衡。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。