查询词典 based

In order to save the space of memory, the local C/A code generator based on RAM, NCO based on CORDIC algorithm and the code phase detector based on Robertson approximate algorithm were proposed in this paper.

设计过程中，为了节约存储空间还提出了基于RAM的本地C/A码产生器、基于CORDIC算法的NCO和基于Robertson近似算法实现的码相位鉴别器等。

The method to configure RED parameters based on network properties is also presented. Simulations show that the modified Random Early Detection algorithm really performs better than the original Random Early Detection algorithm and can work for a much wider range of traffic. Finally, whether the assured service mechanisms i. e. an edge router tags every arriving packet of a TCP flow based service profile and core router drops packets differently at congestion using active queue management scheme is possible to provide a throughput consistent with target rate, is investigated under different network scenarios. Different factors including target rate tagged algorithm, RIO algorithm and TCP congestion control mechanism how to affect the throughput of an assured service TCP flow are examined. Based on a fluid model. we then derive a model of an assured service TCP flow, which is the function of round trip delay, packet loss rate and token bucket parameters. Based on this model, we observe that in some cases it is possible to regulate the token bucket parameters to gain a consistent throughput with the target rate, while in other cases there exist ranges of values of the achieved rate for which the token parameters have no influence. With the latter, some modified TCP congestion control mechanisms to assure TCP throughput are proposed.

最后，在区别服务网络结构内，研究了当前提出的一种边缘路由器根据服务合同标记、分类数据包，结合内部路由器采用主动队列缓冲管理机制区别处理数据包的确信服务机制是否可在不同网络情况下使TCP连接获得同目标速率相一致的、公平的吞吐量问题；指出影响TCP连接获得同目标速率相一致吞吐量的主要因素是目标速率大小、标记算法参数和TCP连接的拥塞控制算法；对此，基于流模型假设，首次推导出一个以端到端时延、数据包丢失率、漏桶参数为变量的确信服务TCP连接吞吐量模型；利用这个模型进行分析，得到主要结论是在一些情况下可通过设置合适的漏桶参数得到同目标速率更一致的吞吐量，而在另一些网络情况下不管如何设置漏桶参数都不能使TCP连接获得同目标速率一致的吞叶量；对于后一些情况，还初步讨论了改进TCP拥塞控制算法来改善TCP连接性能的方法。

Based on the water environment spatial data mining and visualization method, the paper presents these main characteristics and innovations:①Measurement of contamination fluxes:A scene-based research strategy is proposed:measurement /water quality analysis→flow field simulation→contamination transformation rule→fluxes scene simulation→temporal-spatial rule analysis.②Serial numerical models of water environment in the Qiantang River:The controlled equations of the flow field model of the main river,united controlled equations of the main contamination fluxes and water quality prediction model at emergent time are set up.③GIS-based water quality and contamination fluxes decision-making assistance system:A water environment database has been set up;based on MapX and C#.net platform,a system has been developed to facilitate visual inquiry,decision-making and graphics export.

本文基于水环境空间数据挖掘与可视化的研究方法与体系，研究中的主要特色与创新点为：①河流污染物通量测算的技术与方法：提出了基于工况测量/水质分析→流场模拟→污染规律解析→通量情景模拟→时空规律分析的研究方案；②钱塘江水环境模拟系列数学模型：建立了钱塘江干流研究区域流场数学模型的控制方程、主要污染物通量模型的联合控制方程、突发污染事故水质预报模型的基本方程；③基于GIS的水质预报与污染物通量决策支持系统的研发：建立水环境时空数据库，基于MapX和C#。net平台进行系统的构建与开发，为研究的系列成果提供可视化的查询、决策与图形输出。

Comparisons of other four strategies,such as PS-result based on result reward and prioritized sweeping,Q-process based on process reward and Q-learning,Q-result based on result reward and Q-learning,and Hand based on hand code,are carried out.

并与其它四种算法--基于结果奖赏和优先扫除、基于过程奖赏和Q学习、基于结果奖赏和Q学习和基于手工编程策略进行比较。

According to the facts of the influence on students' satisfaction of web-based learning, we found out that student's average participation hour in web-based learning has positive correlation on the learning satisfaction. It shows the more participation in web-based learning, the higher satisfaction of web-based learning.

二、於影响国立空大学生网路学习满意度的因素中，学生背景构面其分析结果显示学生每周参与网路学习的平均时数与学习满意度呈正相关，表示学生参与网路学习的时间愈久，学期数愈多，则对网路学习的满意度就愈高。

Afterwards, we have fulfilled motion analysis based on the vasuclar models which we have already built. We have brought forward some new ideas in motion analysis, thus designed and completed String Matching Method and Thin Plate Spline Model based Method. Further, we have invented a mixed model which combined feature based model and intensity based model together, so as to compensate both disadvantages.

我们提出了一些运动分析方面的新思路，设计并完成基于链码匹配技术的运动分析、基于薄型样条模型的运动分析，我们还提出了一种结合基于特征模型和基于灰度模型的混合模型进行运动分析，弥补了各自长期以来的缺陷。

Based on the characteristics of parameterized design and key technologies of knowledge based engineering, and specially according to the characteristics of the construction, figure, assembly-parameter of bicycle frame design, the article has achieved repeated using of experiential parameter and knowledge by adopting methods such as automatic reading experiential datasheet, computing parameter by making use of program, manual data-input or modifying and so on. Based on analyzing the characteristics of Rear End design and the associated characteristics with Chain Stay and Seat Stay, different design methods are analyzed in detail, and rapidly assembling of Rear End, Chain Stay and Seat Stay is achieved by using the method of combining top-down-assembly with down-top-assembly method. Based on analyzing special technologies and UDF characteristics, the repeated using of different sectional shapes by using UDF technology on the tube section design is also achieved, and this will greatly shorten the time spent on fixing the dimensions and orientations on sketches.

在探讨了参数化设计技术特点和知识工程关键技术的基础上，针对自行车车架设计中的结构、形状、装配参数特点，分别采用了读入经验数据表、参数程序求解、手工录入或修改方法实现车架设计经验参数和知识的重复利用；在分析自行车后叉片设计特点及与平、立叉的关联特性的基础上，对不同的设计方案进行了详细分析，并采用自顶向下和自底向上相结合的方法，实现了后叉片的快速装配定位与平、立叉设计相关联；在分析了特征技术和UDF特点的基础上，将UDF用于管件截面的设计上，使各种截面形状能不断重复利用，大大节省了约束草图尺寸和位置的时间。

This paper researches the technique of mobile orientation and the GPSOne technique based on CDMA, based on it linking the technique and application,the paper puts forward location based service flat roof in order to falling the application developing doorsill.This paper gives the design patterm.And combining the patterms of application validates the validaty of location based service system.

本论文深入学习了无线定位的技术理论及体系结构，掌握了基于CDMA网络的无线定位技术GPSOne，在此基础上，将其与业务相结合，提出了位置服务本地接入子系统平台，并给出其设计的模型结构，解决了降低业务接入门砍的技术问题，并结合开展业务模式的分析验证了位置服务本地接入子系统的有效性。

Removing different kinds of impulsive noise in image is systematically researched, and proposes three image removing noise filter based on fuzzy information processing technique, i e., fuzzy entropy-based filter for removing noise in multilevel image, histogram-based filter for removing salt and pepper noise in image, and histogram- based adaptive filter for removing image impulsive noise.

该章对图像中不同类型加性脉冲噪声的去噪问题进行了系统地研究和分析，提出了三种基于模糊信息处理的图像平滑去噪滤波器，分别为基于模糊熵的多值图像去噪滤波器、基于直方图的图像椒盐噪声滤波器、基于直方图和区域信息的自适应图像脉冲噪声滤波器。

Based on the existing ID-based signature, a new ID-based blind signature without trusted PKG is proposed. Meanwhile, a new ID-based proxy signature without trusted PKG is also proposed.

本文在已有基于身份无可信中心签名的基础上提出了一个基于身份无可信中心的盲签名，同时提出了一个基于身份无可信中心的代理签名。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。