1. Introduction:A New Ecology is Needed 1 1.1 Environmental management has changed 1 1.2 Ecology is changing 2 1.3 Book outline 3 2. Ecosystems have Openness (Thermodynamic) 7 2.1 Why must ecosystems be open? 7 2.2 An isolated system would die (maxi
Information technology - Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s - Part 3: Audio Technologies de l'information - Codage de l'image animee et du son associe pour les supports de stockage nume
《Java Servlet API 2.5参考手册》-电子文档+Jar包下载(HTML) Servlet API Documentation javax.servlet The javax.servlet package contains a number of classes and interfaces that describe and define the contracts between a servlet class and the runtime environment pro
Awk入门教程。作者 Bruce Barnett 注：英文版。以下是目录 Why learn AWK? Basic Structure Executing an AWK scr ipt Which shell to use with AWK? Dynamic Variables The Essential Syntax of AWK Arithmetic Expressions Unary arithmetic operators The Autoincrement and Autodecre
【文件格式是Linux下的gz压缩包，在Windows下可以用WinRAR解压】 本人原创的操作系统上机作业（源代码），自己编写一个简单的Linux下的shell（a simple myshell）！原题见William Stallings写的《Operating Systems - Internals and Design Principles》（操作系统--内核与设计原则）： The shell must support the following internal commands: c
