有限厚垒应变纤锌矿AlGaN/GaN异质结中的电子迁移率及其压力效应，武维，班士良，基于力平衡方程，考虑界面和半空间模光学声子对电子的散射，讨论室温及高于室温下，有限厚垒应变纤锌矿氮化物AlGaN/GaN异质结中的电

解一维二阶双曲方程的一个新型四阶紧致差分格式，丁恒飞，张玉新，在本文中，我们提出了一个解一维二阶非齐次线性双曲方程的新型四阶紧致差分格式，且给出了其稳定性分析，最后，数值例子验证了此

ethod while keeping a balanced approach between its mathematical formulation, programming implementation and as its application using commercial software. The computer implementation is carried out using MATLAB, while the practical applications are carried out in both MATLAB and Abaqus. MATLAB is a high-level language specially designed for dealing with matrices, making it particularly suited for programming the finite element method. In addition, it also allows the reader to focus on the finite element method by alleviating the programming burden. Experience has shown that books that include programming examples that can be implemented are of benefit to beginners. This book also includes detailed step-by-step procedures for solving problems with Abaqus interactive and keyword editions.

This book is an outgrowth of lectures in Mathematics 240, "Applied Stochastic Processes," which I have taught a number of times at Duke University. The majority of the students in the course are graduate students from departments other than mathematics, including computer science, economics, business, biological sciences, psychology, physics, statistics, and engineering. There have also been graduate students from the mathematics department as well as some advanced undergraduates. The mathematical background of the students varies greatly, and the particular areas of stochastic processes that are relevant for their research also vary greatly.

《空间谱估计理论与算法》ch5 《阵列信号处理及Matlab实现》ch4 用的求解函数是《空间谱》ch5中的表达形式 可成功运行

Reusable Firmware Development A Practical Approach to APIs, HALs and Drivers 英文epub 本资源转载自网络，如有侵权，请联系上传者或csdn删除 查看此书详细信息请在美国亚马逊官网搜索此书

Ross's classic bestseller, Introduction to Probability Models, has been used extensively by professionals and as the primary text for a first undergraduate course in applied probability. It provides an introduction to elementary probability theory and stochastic processes, and shows how probability theory can be applied to the study of phenomena in fields such as engineering, computer science, management science, the physical and social sciences, and operations research. With the addition of several new sections relating to actuaries, this text is highly recommended by the Society of Actuaries. A new section (3.7) on COMPOUND RANDOM VARIABLES, that can be used to establish a recursive formula for computing probability mass functions for a variety of common compounding distributions. A new section (4.11) on HIDDDEN MARKOV CHAINS, including the forward and backward approaches for computing the joint probability mass function of the signals, as well as the Viterbi algorithm for determining the most likely sequence of states. Simplified Approach for Analyzing Nonhomogeneous Poisson processes Additional results on queues relating to the (a) conditional distribution of the number found by an M/M/1 arrival who spends a time t in the system,; (b) inspection paradox for M/M/1 queues (c) M/G/1 queue with server breakdown Many new examples and exercises.

C Programming A Modern Approach, 2nd Edition(Part 2)

C Programming A Modern Approach, 2nd Edition(Part 1)

（1）整车动力性需求功率验算 1）最高车速对应的功率需求计算 最高车速时，车辆主要受到滚动阻力和风阻的影响，忽略坡度阻力的情况下，最 大需求功率 _ maxm vP 为 2 max max _ max ( ) 3600 21.15 d m v v C Av P mgf     ································ (4.1) 其中， max v 为最高车速；   为系统效率；m 为在原车整备质量基础上加载 165kg 后的质量。根据目标车型的基本参数可以得到在最高车速下的功率需求约为 45kW。 2）最大爬坡度对应的功率需求计算 以稳定车速 0 v 通过 max  的坡度时，车辆所需功率 0_ v P  为 0 2 minmin _ max max ( cos sin ) 3600 21.15 d v C Avv P mgf mg         ···················· (4.2) 取最大坡度为 30 度， max max arctan  。最低通过车速为 20km/h 时，所需功率为 36.3kW。 3）加速时间对应的功率需求计算 车辆加速过程中，所受到的阻力主要包括滚阻、风阻以及加速阻力，忽略坡路阻 力，加速后期所需功率最大，此时的加速功率需求 acc P 为 2 ( ) 3600 21.15 d acc f w j C Avv dv P P P P mgf m dt          ····················· (4.3) 其中， 为旋转质量换算系数； v为加速后期车速； dv dt 为加速后期加速度。 在初步验算过程中，为了简化计算，采用一种常用的等效方式表达加速过程中的 车速与加速末时车速和加速时间的关系，如式 4.4 所示[37] ( ) a m m t v v t  ································ ·············· (4.4) 其中， m v 为车辆加速后期车速； m t 为加速时间； a 为拟合系数，通常取为 0.5。 由此可得，加速时间需求功率为 3 2 1 ( ) 3600 1.5 52.875 7.2 m d m m acc m m m v C Av v P mgf t t m t      ························ (4.5) 初步估算得加速功率需求为 72.6kW，大于其他两个动力指标下的功率需求。 （2）基速比选择及电机功率需求计算