Ambulance always returns home with each service; standard M/G/1 applies a But suppose we have an emergency repair vehicle that travels directly from one customer to the next?

two -Server- Hypercube” Queueing Model Distinguishable servers Different workloads(due to geography) Can appear with or without queueing With-- usually FCFS Without--usually means a backup contract service is in place

Outline Background and Definitions Shortest path Minimum spanning tree Introduction to Travelling Salesman Problem and Chinese Postman Problem

Single Tree center problem G is a tree. e i=1. 2..m are the end vertices

针对污泥生态床系统冬季运行效果差的问题，自行培育、分离了四株耐冷菌，测试了其生理特性．实验表明，在0℃时，耐冷菌混合菌的比生长速率可达到0．058h-1，而中温菌为零．加入耐冷菌后，污泥生态床的冬季运行效果显著提高，Zn的去除率比不加耐冷菌时提高了25倍．

《水污染控制工程》课程教学大纲（二）

There Are Three Things Important When Buying a House: Location Location Location

我拿什么来表达你？— 污水 污水谱仪？ 国际通用三大类指标： 物理性指标 化学性指标 生物性指标

第一节 稳定塘 第二节 污水土地处理

Lecture Outline A fundamental result for queuing networks State transition diagrams for Markovian queuing systems and networks: example Analysis of systems with dynamic demand and service rates Qualitative behavior of dynamic systems