ABAQUS热传导与热应力分析

一个很好的LBM入门例子，两相流，很容易上手，代码亲试没任何问题

基于中颖sh79f166A的demo 涉及到定时器 中断 PWM 串口 LCD 按键的一初始化和应用的demo，代码风格规范，合适刚开始接触改单片机的新手使用。

利用matlab对SVM算法的参数进行优化，从而更好的提升分类性能

语音识别的dtw算法matlab实现 特定人识别

MATLAB下求两幅图像的峰值信噪比（PSNR）。讨厌在网上下到骗分的东西。小程序，保证能运行。

使用CC2591作为CC2530的功放, CC2591 PAThe absolute maximum ratings and operating conditions listed in the CC2530 datasheet [1]and the CC2591 datasheet [4] must be followed at all times. Stress exceeding one or more ofthese limiting values may cause permanent damage to any of the devicesNote that these characteristics are only valid when using the recommended register settingspresented in Section 4.6 and in Chapter 8, and the CC2530 - EM reference designOperating Frequency240524835MHzOperating Supply Voltage2036VOperating Temperature-40CTC=25C, VDD=3.0V, f=2440 MHz if nothing else is stated. All parameters are measuredon the CC2530-Cc2591EM reference design [11] with a 50 Q2 loadReceive CurrentWait for sync, -90 dBm input levelWait for sync, -50 dBm input level24mATXPOWER OXE5166mATXPOWER OXD5149mATXPOWER OXC5138mATXPOWER OXB5127mATransmit currentTXPOWER OXA5115ATXPOWER = 0X95100mATXPOWER = 0X8594ATXPOWE=0×75mATXPOWE=0×6579APower Down Current PM2UAISTRUMENTSPage 3 of 19SWRA308ATC=25C, Vdd=3.0V, f= 2440 MHz if nothing else is stated. All parameters are measuredon the CC2530-CC2591 EM reference design with a 50 Q2 loadReceive Sensitivity HGM 1 %PER, IEEE 802. 15.4[6] requires -85 dBm-988dBmReceive Sensitivity LGM1 PER, IEEE 802. 15.4 [6] requires -85 dBm-90.4dBmSaturationlEEE 802.15. 4 [6] requires-20 dBm10dBmWanted signal 3 db above the sensitivity levelIEEE 802.15.4 modulated interferer at ieee 802.15.4 channelsInterferer Rejection+5 MHz from wanted signal, IEEE 802. 15. 4 [6] requires 0 dBdB+10 MHz from wanted signal, IEEE 802. 15. 4 [6] requires 30 dB49dB+20 MHz from wanted signal wanted signal at- 82d BmdBdue to in the external lna and the offset in cc2530 the rssi readouts from cc2530CC2591 is different from rssi offset values for a standalone cc2530 design the offsetvalues are shown in table 4.4High Gain Mode79LoW Gain mode67Real rssi Register value-Rssl offsetISTRUMENTSPage 4 of 19SWRA308ATc=25C, Vdd=3.0V, f=2440 MHz if nothing else is stated All parameters are measuredon the CC2530-CC2591 EM reference design with a 50 Q2 load Radiated measurements aredone with the kit antennaRadiated Emissionwith TXPOWer Oxe5Conducted 2. RF (FCC restricted band)-462|dBmConducted 3. RF(FCC restricted band46.5 dBmComplies withFCC 15.247. SeeChapter 7 for moredetails about regulatoryRadiated 2.RF(FCC restricted band)42.2dBmrequirements andcomplianceIEEE 802.15.4[6]requires max.35%%Measured as defined by IEEE 802.15. 4 6TXPOWER OxE5. f= EEE 802.15. 4 channels13TXPOWER= OXD5. f= EEE 802.15.4 channelsTXPOWER= OXC5 f= EEE 802.15.4 channelsMax error∨ ectorTXPOWER OxB5 f= IEEE 802.15. 4 channelsMagnitude(EVM)TXPOWER OxA5. f= IEEE 802.15.4 channelsTXPOWER 0X95. f= IEEE 802. 15.4 channels643333%%%%%%%TXPOWER= 0x85. f= iEEE 802. 15.4 channelsTXPOWER =0x75 f= IEEE 802. 15.4 channels%TXPOWER= 065. f= iEEE 802. 15.4 channelsThe RF output power of the CC2530- CC2591 EM is controlled by the 7-bit value in theCC2530 TXPOWER register. Table 4.6 shows the typical output power and currentconsumption for the recommended power settings The results are given for Tc= 25 C, Vdd3.0V and f= 2440 MHz, and are measured on the cC2530-CC2591 EM reference designwith a 50 Q2 load. For recommendations for the remaining CC2530 registers, see Chapter 8 oruse the settings given by SmartRF StudioOXE520166OxD519149OxC18138OxB517127OxA5161150x95141000x8513940X75860x651079Note that the recommended power settings given in Table 4.6 are a subset of all the possibleTXPOWER register settings. However, using other settings than those recommended mightINSTRUMENTSPage 5 of 19SWRA308Aresult in suboptimal performance in areas like current consumption, EVM, and spuriousemissionTc=25C, Vdd=3.0V, f=2440 MHz if nothing else is stated All parameters are measuredon the CC2530-CC2591EM reference design with a 50 32 load2221-2V201918171611121314151617181920212223242526251510OxE5OxC5OxA50X850x65540-30-20-1001020304050607080ISTRUMENTSPage 6 of 19SWRA308A98Avg 3.6VAva 3vAvg 2V110111213141516171819202122232425261023.6V-1062V-110-40-30-20-100102030405060708070604020-Wanted signal at:-82 dBm10ISTRUMENTSPage 7 of 19SWRA308ACC2530-CC2591EM High Gain ModeC C2530-CC2591EM Low Gain Mode- CC2530EM40000-100110100908070-60-50-40-30-20-100The IEEE standard 802.15. 4 [8] requires the transmitted spectral power to be less than thelimits specified in table 4.7If-fc>3.5 MHz-20 dB-30 dBmThe results below are given for Tc=25 C, Vdd=3.0V and f= 2440 MHz, and are measuredon the CC2530-CC259 1EM reference design with a 50 Q loadIEEE absoluteChannel 182432.52435243752442524452447.5ISTRUMENTSPage 8 of 19SWRA308AOnly a few external components are required for the CC2530-CC2591 reference design. Atypical application circuit is shown below in Figure 5.1. Note that the application circuit figuredoes not show how the board layout should be done. The board layout will greatly influencethe RF performance of the CC2530-CC2591EM. TI provides a compact CC2530CC2591 EM reference design that it is highly recommended to follow. The layout, stack-upand schematic for the CC2591 need to be copied exactly to obtain good performance. Notethat the reference design also includes bill of materials with manufacturers and part numbersL102 L10=TI INF inductorVDD13cc2530LA 1RF PANTCC2591 RF NFNPA EN(P1 1)i工工I NA FNP:1HGM ENPO 7)T:1Proper power supply decoupling must be used for optimum performance. In Figure 5.1, onlythe decoupling components for the CC2591 are shown. This is because, in addition todecoupling, the parallel capacitors C11, C101, and C131 together with, L101, L102, TL11TL101 and TL131 also work as RF loads. These therefore ensure the optimal performancefrom the CC2591. C161 decouples the AvDD blAs power.The placement and size of the decoupling components, the power supply filtering and thePCB transmission lines are very important to achieve the best performance Details about theimportance of copying the CC2530-CC2591EM reference design exactly and potentialconsequences of changes are explained in chapter 6The RF input/output of CC2530 is high impedance and differential. The CC2591 includes abalun and a matching network in addition to the PA, LNa and RF switches which makes theinterface to the CC2530 seamless. Only a few components between the CC2530 andCC2591 necessary for RF matching For situation with extreme mismatch(VSWR 6: 1 till 12: 1out-of-band as shown in Figure 6.2) it is recommended to include all the components asshown in Figure 5.1ISTRUMENTSPage 9 of 19SWRA308ANote that the PCB transmission lines that connect the two devices also are part of the RFmatching. It is therefore important to copy the distance between the devices, the transmissionlines and the stack-up of the PCB according to the reference design to ensure optimumperformanceThe network between the CC2591 and the antenna(L111, C112, C111 C113 and L112matches the CC2591 to a 50 2 load and provides filtering to pass regulatory demands. C111also works as a dc-blockR151 is a bias resistor the bias resistor is used to set an accurate bias current for internaluse in the cc2591The TI reference design contains two antenna options. As default, the Sma connector isconnected to the output of CC2591 through a 0 Q2 resistor. This resistor can be soldered offand rotated 90 clockwise in order to connect to the PCB antenna, which is a planar invertedF antenna(PIFA). Note that all testing and characterization has been done using the SMAconnector. The PCB antenna has only been functionally tested by establishing a link betweentwo EMs. Please refer to the antenna selection guide [6] and the Inverted F antenna designnote [7 for further details on the antenna solutionsISTRUMENTSPage 10 of 19SWRA308A

MATLAB入门教程，适合初学者。MATLAB语言主要应用于工程计算、控制设计、信号处理与通讯、图像处理、信号检测、金融建模设计与分析等领域。课程的作用在欧美各高等学校, Matlab成为线性代数、自动控制理论、数字信号处理、时间序列分析、动态系统仿真、图像处理等诸多课程的基本教学工具,成为本科生、硕士生和博士生的必须掌握的基本技能。在设计研究单位和工业部门, Matlab已被广泛地用于研究和解决各种具体的工程问题。可以预见,Mab将在我国科学研究和工程应用中发挥越来越大的作用2015/9/14Application of Matlab Language3课程的目的(0 bjectives of This Course)讲授 MATLAB语言基础入门知识,介绍 MATLAB产品的体系、 MATLAB桌面工具的使用方法,重点介绍 MATLAB的数据可视化、数值计算的基本步骤以及如何使用 MATLAB语言编写整洁、高效、规范的程序。并涉及到一些具体的专业应用工具箱(如:信号处理工具箱、图像处理工具箱等)通过本课程的学习,了解、熟悉、掌握 MATLAB的基本编程方法,并具有初步的利用计算机处理、解决实际问题的能力,为进一步学习后续的专业课程做好准备本课程的特点( Features of This course)交叉性课程,是计算机技术、数学理论知识以及诸多工程理论知识的综合。实践性课程内容多,课时少,要求同学上课认真听讲,要充分利用上机实践消化、理解、掌握课上讲解内容。2015/9/14Application of Matlab Language4课程安排课堂教学:共24学时;(1-12周)上机试验:共24学时(2-13周,周二7-8节,九实401、402、403)口学习成绩1)上机实验成绩占30%2)考勤10%3)考试60%(随堂考试)。主要参考书《精通 MaTLAB6.5》张志涌等编著,北航出版,2003年《高等应用数学问题的 Matlab求解》薛定宇等著,清华大学出版社,2004年《 Matlab程序设计与应用》刘卫国主编,高等教育出版社2015/9/14Application of Matlab Language授课宗旨讲授 MATLAB的通用功能。寓教于例,由浅入深。关于科学计算,着重强调理论概念、算法和实际计算三者之间的关系。2015/9/14Application of Matlab Language第一讲 Matlab概述前言Matlab软件概述Matlab的桌面环境及入门知识2015/9/14Application of Matlab Language1 Matlab概述内容Matlab发展历史Matlab产品家族 Matlab family of product体系Matlab语言的特点。目的全面了解 Matlab软件包激发对Maab软件的学习兴趣2015/9/14Application of Matlab Language81.1 MATLAB的历史及影响70年代中期, Cleve moler博土及其同事在美国国家基金会的帮助下,开发了 LINPACK和EⅠ SPACK的 FORTRAN语言子程序库,这两个程序库代表了当时矩阵运算的最高水平。到了70年代后期,身为美国新墨西哥州大学计算机系系主任的 Cleve moler,在给学生上线性代数课时,为了让学生能使用这两个子程序库,同时又不用在编程上花费过多的时间,开始着手用 FORTRAN语言为学生编写使用Cleve molerLINPACK和 EISPACK的接口程序,他将这个程序取名为MATLAB,其名称是由 MATrix和 LABoratory(矩阵实验室)两个单词的前三个字母所合成。在1978年, Malab就面世了。这个程序获得了很大的成功,受到了学生的广泛欢迎。在以后的几年里, Matlab在多所大学里作为教学辅助软件使用,并作为面向大众的免费软件广为流传。2015/9/14Application of Matlab Language将 MATLAB商品化的不是 Cleve moler,而是一个名叫 Jack little的人。当免费的 MATLAB软件到 Stanford大学, Jack little正在该校主修控制,便接触到了当时 MATLAB,直觉告诉他,这是一个具有巨大发展潜力的软件。因此他在毕业沒多久,就开始用C语言重新编写了 MATLAB的核心。在 Moler的协助下,于1984年成立 MathWorks公司,首次推出 MATLAB商用版。在其商用版推出的初期, MATLAB就以其优秀的品质(高效的数据计算能力和开Jack little放的体系结构)占据了大部分数学计算软件的市场,原来应用于控制领域里的一些封闭式数学计算软件包(如英国的UMST、瑞典的LUND和SⅠMNON、德国的 KEDDC)就纷纷被淘汰或在MATLAB上重建。2015/9/14Application of Matlab Language10

MDK 4.71 破解 KEIL4,能破解4.71

高考志愿填报综合参考系统是一个CS模式管理系统,主要包括两大方面,一方面是开发和维护后台数据库,另一方面是前台应用程序的开发．对于前者要求建立起数据一致性和完整性强.数据安全性好的库。而对于后者则要求应用程序功能完备,易使用等特点。具体的来说，我们用微软的 SQL SERVER 2000来作为后台的数据库, SQL SERVER 2000是一个为前台服务的后台开发工具,他提供了多种面向对象的开发工具.特别的是,数据库开发人员能够轻松的进行数据库建立工作。高考志愿填报综合参考系统为用户提供大量的高考信息，包括高校信息，专业信息等等,方便用户快捷查询，测试，找到适合自己的专业。

psat 相关资料,很实用，及实际运用的相关例子