查询词典 based on...

To overcome the above problems,authors present a Hierarchical algorithm based on Communication range Restraining Clustering.It first studies single-level protocol based on Communication range Restraining Clustering and then father node is selected in every layer in terms of communication range restraining to reduce the number of data package transmission.

针对这种问题，提出了一种基于通信范围约束的多层簇类算法，基于单层次的数据融合结构，给出了多层次的数据融合，然后对每一层簇头通过通信范围选择父节点，减少数据包传输次数。

Based on analyzing uncertainties when determining indicators system of ecosystem health assessment, an indicators system and a model for the evaluation of urban river ecosystem health was proposed. The model could offer the feasible and reliable base of decision-making for the river environment management.(4) An integrated method for land suitability evaluation based on geographic information systems under uncertainty was proposed.

运用模糊层次分析法，建立基于不确定性的模糊层次综合评价模型，并将理论应用于长沙市河流生态系统，查明城市河流的健康状态，研究结果可丰富河流生态系统健康研究理论体系，弥补当前生态系统健康与修复研究中城市河流方面的缺乏，对退化城市河流生态系统的保护和恢复起到很好的指导作用。

Different from former floorplanning methods based on linear programming, solutions of the method in the dissertation always lie in the feasible region of the original floorplanning model based on mathematical programming.

实验结果表明使用本文提出的线性规划模型在保证了解空间可行性的同时达到了良好的布图规划效果。

To provide methods for the study of laser rapid prototyping system based on polar coordinates, especially it apply to featheredge spheroid parts; The make-up of SLS rapid prototyping system based on polar coor.

本文基于激光变长线快速成型系统和激光点扫描快速成型系统的特征，激光选区烧结成型工艺因其适用于中小型零件，且选用材料广泛，对其研究具有现实意义；为基于极坐标系的激光快速成型系统的研究提供了素材，特别是对于薄壁回转体零件具有较强的针对性；详实地讨论了基于极坐标的激光选区烧结系统的组成。

In this paper, a method of lost repairing with FEC based on RTP and an RTP library, which was designed and implemented based on this method are intr...

介绍了在RTP上采用FEC修复丢包的方法，基于这个方法设计并实现了一个支持丢包修复功能的RTP库，说明了丢包修复功能的测试方法和结果。

Based on these theories, a computer program based on finite element method is validated.

在这些理论的基础上，开发相应的有限元计算程序并通过算例进行验证。

Design parameter based on finite element model updating is part of an inverse problem of structure dynamics. Features of the structure are used as a function of design parameters. Parameters are updated based on the first derivative. This paper presents a new method which treats the model updating as a positive problem.

设计参数型有限元模型修正属於结构动力学反问题，其理论基础是将结构的特徵量视为设计参数的函数，然后依据特徵量对设计参数的一阶导数信息进行迭代求解。

In ocean wave simulation,a view-dependent ocean wave mesh model is given by experiment analysis for two common mesh models,which are based on random sample points and based on fixed sample points.

在海浪模拟中，通过对两种常用网格化模型(基于随机采样点的网格化和基于固定采样点的网格化)的实验分析，给出了一种视点相关的海浪网格模型。

Methods: A retrospective study was conducted using an insurance database from Bureau of Nation Health Insurance - Central regional branch with registered children born in 2001 who received teeth fluoridation and anti-decay program. The difference of utilization of dental care preventive service analysis was based on each individual child's character and required dental treatment. For cost-benefit analysis, children were selected who were eligible receiving or non- receiving this benefit from July 1, 2004 till 2007. Two groups were compared by frequency matching analysis, based on sex, medical provide territories, insured fee. Additional Incremental benefit/cost method of cost-benefit analysis is also conducted to evaluate the service providing cost increasing and dental treatment cost decreasing effectiveness.

研究方法主要系透过健保局中区分局93年至96年儿童牙科医疗费用统计资料，比较90年次出生之儿童接受涂氟预防保健服务之人口学特质及其涂氟前后牙科医疗利用差异；并依该等对象接受涂氟预防保健服务与否区分两组，就其性别、就医地区别与全民健保投保金额组别等予以配对，进一步应用成本效益分析（cost-benefit analysis，CBA）之增量益本比（Incremental benefit/cost method，IBC），探讨儿童牙齿涂氟预防保健服务成本的增加，使牙科医疗费用减少所带来效益的增加为何。

The main researches about Chinese character recognition of vehicle license plate and its corresponding technique in this paper are as follows:(1) The pre-processing for image is essential before character recognition. This paper firstly uses the experience knowledge to give a roughly orientation,then set a carefully orientation based on Otsu arithmetic,finally get the whole clear license plate.In order to solve the problem of character extraction,the fly-back method is put forward:the experience knowledge is made the best of.(2) An algorithm of feature extraction from grayscale image based on optimization Gabor filters is proposed.

本文针对车牌汉字识别及相关技术进行研究，主要工作包括：(1)在对车牌汉字进行识别前需要进行必要的预处理工作，我们首先运用车牌的先验知识进行粗定位，然后采用Otsu阈值二值化方法等进行快速鲁棒的车牌区域细定位，获得完整、清晰的车牌轮廓，并采用回扫式字符切割方法，充分利用了车牌字符固有的特点准确找到各个字符的分割点，为特征提取奠定了基础；(2)提出一种优化的Gabor滤波器特征提取算法直接对灰度图像进行特征提取。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。