In describing tools for internet security, this title focuses on understanding the system architecture of existing security and on developing architectural changes for new security services. Topics include security threats in wireless networks, secu
The code is developed when I was study for my Ph.D. degree in Tongji Universtiy. It wiil be used to solve the green wave control problem of urban intersections, wish you can understand the content of my code. CRChang
The Scientist & Engineer's Guide to Digital Signal Processing, by Steven W. Smith, Ph.D, provides a practical introduction to Digital Signal Processing. Covering a wide range of topics, this book is an ideal introductory text for those new to DSP, a
Security Comparison: BluetoothTM Communications vs. 802.11 Thomas G. Xydis Ph.D. Simon Blake-Wilson Bluetooth Security Experts Group 11-10-2001 revised 2-1-2002 1.0 Introduction Several attacks on IEEE 802.11b have been described in the media [1]. I
博士磨难（The Ph.D. Grind）是一本很火的书，作者Philip是MIT的本科和硕士，Stanford的PhD。他读博的历程并非一帆风顺，也经历过不少迷茫和痛苦。想读博或正在读博的人可以借鉴吸取经验。仁者见仁智者见智。
Preface
This book chronicles my six years of working towards a Ph. D. in com- These margin notes are
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puter science at Stanfor
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实际应用，设计了一种PWM型D类超声宽带功率放大器.对阻性和抗性负载的输出波形开展谐波失真、负载电
压和输出功率的测量结果表明:该电路可对20-400 kHz的中低频超声输入信号进行功率放大，其最大输出功率
可达46 W,效率超过78%.该电路具有输出内阻小、阻抗匹配简单、相位保持度高、功率损耗低和发热小的优点，
可为超声技术在生物医学中的应用提供电路基础，实现大规模相控阵列的精确驱动，具有良好的推广价值.
