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ASP版微信公众平台接口开发，含实例讲解一个。主要用于ASP版微信开发者模式自动回复功能。

ParaView 是对二维和三维数据进行可视化的一种 turnkey 应用。它 既可以运行于单处理器的工作站，又可以运行于分布式存储器的大型 计算机。这样，ParaView 既可以运行单处理应用程序，又可以通过把 数据分布于多个处理器而处理大型数据。

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【实例简介】通信信号调制制式的自动识别和调制参数的自动估计是非协作通信和软件 无线电中的主要问题。非协作通信是通信中的一个分支，在民用或军用场合都 有重要的应用，它需要接收机在先验知识不足的前提下监视空间通信信号的活 动情况，并截获其传输的信息内容；软件无线电是未来通信中的一个关键技术， 它需要接收机能在同一个硬件平台上自动完成多种体制、多个频段的通信和相 互间的切换。这里面都需要解决通信信号制式的自动识别和参数估计。另外， 信噪比（SNR）是接收信号的一个关键参数，它对通信系统的性能有着重要影响， 对它的估计也十分必要。直接扩频序列信号（DSSS）由于具有极低的功率谱密 度，如何在非协作通信中不知道扩频序列的前提下对其进行检测和估计，是一 个具有很强的应用背景同时富有挑战性的课题。本文以通信信号的统计特性为 基础，分别对这些问题进行了研究和探索，主要包括： 首先，使用统计模式识别的方法，综合决策树识别器和神经网络识别器的 优点，提出了一种混合识别器，它在不依赖于先验的调制参数和信噪比的条件 下能对常用的11种数字调制信号CW、BPSK、QPSK、OQPSK、16QAM，32QAM， 64QAM、2FSK、4FSK、GMSK和OFDM进行准确的识别。 其次，研究了非协作通信中观测信号调制参数的估计问题。对M-PSK及 M-QAM信号滚降系数的研究表明，接收机中滚降系数不准确对系统性能的影响 非常小，因此我们在设计接收机时可以不必考虑滚降系数的影响，而只需固定 一个值即可。对M-FSK号调制指数的研究表明，我们提出的估计算法能够显著 改善时钟同步性能，并且估计结果不影响最后的误码率。对M-PSK、M-QAM 及OQPSK信号波特率的研究表明，我们提出的波特率估计算法能够在较短的观 测长度下取得较高精度的波特率估计值，并且估计结果完全满足解调器所需的 精度要求。 再次，研究了观测信号SNR的估计问题，提出了两种不依赖于辅助数据的 估计算法，一种是改进的基于最小描述长度原理和特征值分解的算法，另一种 算法基于Gibbs抽样原理。这两种算法均能在AWGN信道和多径信道中精确估 计出信号的SNR。此外，第二种算法还可以给出信道的估计信息。 最后，利用扩频序列的强自相关特性和弱互相关特性，研究了DSSS信号在 非协作通信中的检测和参数估计问题。算法以接收信号自相关函数的累加为基计DSSS信号的波特率、chip速率和载波频率，然后提出了两个测度函数， 一个对扩频序列进行同步，确定出扩频序列在观测序列中正确的起始位置；另 一个在扩频序列同步的基础上估计序列中每一个chip的具体数值。计算机仿真 结果验证了理论分析的正确性。 本论文的研究结果表明：通过采用本论文提出的调制信号自动识别算法和 相关的调制参数估计算法，可以有效的提高非协作通信和软件无线电中接收机 的工作性能和实用化程度。

设计一个利用哈夫曼算法的编码和译码系统，重复地显示并处理“要求”中项目，直到选择退出为止。要求：（1）将权值数据存放在数据文件(文件名为data.txt，位于执行程序的当前目录中) （2）分别采用动态和静态存储结构（3）从键盘输入字符集大小n、n个字符和n个权值，建立哈夫曼树；（4）利用建好的哈夫曼树生成哈夫曼编码；（5）输出编码； 用户可以执行的的功能有： (1)---选择读取某个源文件由系统解析建立哈夫曼树 (2)---手动输入字符集及其权值信息建立哈夫曼树 (3)---打印字符集的哈夫曼编码到屏幕 (4)---选择某个文本文件进行编码 (5)---选择某个代码

内含5种学术海报pptx格式模板，每种包含3个版式，36*36英寸（正方形），36*48英寸（竖版），48*36英寸（横板），共计15个文件。ps：36英寸=91.44 厘米，48英寸=121.92 厘米

【实例简介】ti C6678全套开发文档，对于做C6678相关开发的技术人员非常重要。

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不错的汽车动力学教材，是参与汽车底盘电子开发的动力学基础。Reza n. jazarVehicle DynamicsTheory and ApplicationsSpringerReza n. jazarDept of Mechanical EngineeringManhattan collegeRiverdale. NY 10471ISBN:978-0-387-74243-4e-ISBN:978-0-387-74244-1Library of Congress Control Number: 200794219c 2008 Springer Science+ Business Media, LLCAll rights reserved. This work may not be translated or copied in whole or in part without thewritten permission of the publisher(Springer Science+Business Media, LLC, 233 SpringStreet, New York, NY 10013, USA), except for brief excerpts in connection with reviews orscholarly analysis. Use in connection with any form of information storage and retrievalelectronic adaptation, computer software, or by similar or dissimilar methodology now knownor hereafter developed is forbidden. The use in this publication of trade names, trademarksservice marks and similar terms, even if they are not identified as such, is not to be taken as anexpression of opinion as to whether or not they are subject to proprietary rightsPrinted on acid-free paper987654321springer. comKavoshmy daughter, Vazan,and my wife, MojganHappiness is when you win a race against yourselfPrefaceThis text is for engineering students. It introduces the fundamental knowledge used in vehicle dymamics. This knowledge can be utilized to developcomputer programs for analyzing the ride, handling, and optimization ofroad vehiclesVehicle dynamics has been in the engineering curriculum for more thana hundred years. Books on the subject are available, but most of themare written for specialists and are not suitable for a classroom applicationA new student, engineer, or researcher would not know where and howto start learning vehicle dynamics. So, there is a need for a textbook forbeginners. This textbook presents the fundamentals with a perspective onfuture trendsThe study of classical vehicle dynamics has its roots in the work ofgreat scientists of the past four centuries and creative engineers in thepast century who established the methodology of dynamic systems. Thedevelopment of vehicle dynamics has moved toward modeling, analysisand optimization of multi-body dynamics supported by some compliantmembers. Therefore, merging dynamics with optimization theory was anexpected development. The fast-growing capability of accurate positioninsensing, and calculations, along with intelligent computer programming arethe other important developments in vehicle dynamics. So, a textbook helpthe reader to make a computer model of vehicles, which this book doesLevel of the bookThis book has evolved from nearly a decade of research in nonlineardynamic systems and teaching courses in vehicle dynamics. It is addressedprimarily to the last year of undergraduate study and the first year graduatestudent in engineering. Hence, it is an intermediate textbook. It providesboth fundamental and advanced topics. The whole book can be coveredin two successive courses, however, it is possible to jump over some sections and cover the book in one course. Students are required to know thefundamentals of kinematics and dynamics, as well as a basic knowledge ofnumerical methodsThe contents of the book have been kept at a fairly theoretical-practicallevel. Many concepts are deeply explained and their application empha-sized, and most of the related theories and formal proofs have been explained. The book places a strong emphasis on the physical meaning andapplications of the concepts. Topics that have been selected are of highinterest in the field. An attempt has been made to expose students to aPrefacebroad range of topics and approachese There are four special chapters that are indirectly related to vehicle dy-amics: Applied Kinematics, Applied Mechanisms, Applied dynamics, andApplied vibrations. These chapters provide the related background to understand vehicle dynamics and its subsystemsOrganization of the bookThe text is organized so it can be used for teaching or for self-studyChapter 1"Fundamentals, "contains general preliminaries about tire andrim with a brief review of road vehicle classificationsPart I"One Dimensional Vehicle Dynamics, " presents forward vehicledynamics, tire dynamics, and driveline dynamics. Forward dynamics refersto weight transfer, accelerating braking, engine performance, and gear ratiodesignPart II"Vehicle Kinematics, presents a detailed discussion of vehiclemechanical subsystems such as steering and suspensionsPart IIT"Vehicle Dynamics, employs Newton and Lagrange methodsto develop the maneuvering dynamics of vehiclesPart Iv "Vehicle Vibrations, presents a detailed discussion of vehi-cle vibrations. An attempt is made to review the basic approaches anddemonstrate how a vehicle can be modeled as a vibrating multiple degreeof-freedom system. The concepts of the Newton-Euler dynamics and La-grangian method are used equally for derivation of equations of motionThe RMS optimization technique for suspension design of vehicles is intro-duced and applied to vehicle suspensions. The outcome of the optimizationtechnique is the optimal stiffness and damping for a car or suspended equipmentMethod of presentationThis book uses a fact-reason-application"structure. The "fact"is themain subject we introduce in each section. Then the reason is given as a" proof. The application of the fact is examined in some examples. Theexamplesare a very important part of the book because they show howto implement the facts. They also cover some other facts that are neededto expand the subjectPrerequisitesSince the book is written for senior undergraduate and first-year graduatelevel students of engineering, the assumption is that users are familiar withmatrix algebra as well as basic dynamics. Prerequisites are the fundamentals of kinematics, dynamics, vector analysis, and matrix theory. Thesebasics are usually taught in the first three undergraduate yearsPrefaceUnit SystemThe system of units adopted in this book is, unless otherwise stated, theinternational system of units(SI). The units of degree(deg)or radian(rad)are utilized for variables representing angular quantitiesSymbolse Lowercase bold letters indicate a vector. Vectors may be expressed inan n dimensional Euclidian space. ExamplerCUppercase bold letters indicate a dynamic vector or a dynamic matrix, such as force and moment. ExampleFo Lowercase letters with a hat indicate a unit vector. Unit vectors arenot bolded. ExampleLowercase letters with a tilde indicate a 3 x 3 skew symmetric matrixassociated to a vector. Examplea3211An arrow above two uppercase letters indicates the start and endpoints of a position vector. ExampleON = a position vector from point o to point Ne The length of a vector is indicated by a non-bold lowercase letterExampleCapital letter B is utilized to denote a body coordinate frame. ExampleB(ocgB(Oxyz)B1(o1x19121)ⅹ11PrefaceCapital letter G is utilized to denote a global, inertial, or fixed coordinate frame. ExampleG(XYZG(OXYZRight subscript on a transformation matrix indicates the departureframes. ExampleRB= transformation matrix from frame B(oxyz)Left superscript on a transformation matrix indicates the destinationframe. ExampleRBtransformation matrix from frame B(o cgz)to frame G(OxYZ)Capital letter R indicates rotation or a transformation matrix, if itshows the beginning and destination coordinate frames. Example0BSIn a0Whenever there is no sub or superscript, the matrices are shown in abracket. ExampleCOS asin a osIn aCOs O0e Left superscript on a vector denotes the frame in which the vectoris expressed. That superscript indicates the frame that the vectorbelongs to; so the vector is expressed using the unit vectors of thatEr= position vector expressed in frame G(OXYZ)Right subscript on a vector denotes the tip point that the vector isreferred to. ExamplePsition vector ofexpressed in coordinate frame G(OXYZ)Right subscript on an angular velocity vector indicates the frame thatthe angular vector is referred to. ExampleB= angularof the body coordinate frame B(oxyz)

【实例简介】利用Matlab/Simulink 与Ti CCS对C2000/28335 进行建模和自动代码生成，从安装包的安装到模型建立，最后硬件配置、代码生成和在线调试。