Definition. A flow network is a directed graph G = (V, E) with two distinguished vertices: a source s and a sink t. Each edge (u, v) ∈ E has a nonnegative capacity c(u, v). If (u, v) ∉ E, then c(u, v) = 0

一、资源分配问题（resource-allocation，） 二、成本收益平衡问题（cost-benefit-trade-off，） 三、 网络配送问题（distribution-network，=） 四、混合问题（mixed Problem）－两种或三种类型的混合

§1.1 图的基本概念 §1.2 最短路问题 §1.3 树及其性质 §1.4 生成树与最小生成树 §1.5 图的中心与重心 §1.6 图的矩阵表示

1．Samba 简介 SMB（Server Message Block）是 1987 年 Microsoft 和 Intel 共同制定的网络通讯协议， 它与 Unix/Linux 下的 NFS（Network File System）在功用上是相似的，都是让用户端机器能 够通过网络来分享文件系统，但是 SMB 比 NFS 功能强大而且复杂

Outline Network Layer and Internetworking The TCP/IP protocol suit ATM MPLS

An interesting property of an M/M/1 queue, which greatly simplifies combining these queues into a network, is the surprising fact that the output of an M/M/1 queue with arrival rate λ is a Poisson process of rate

Queueing Systems Used for analyzing network performance In packet networks, events are random Random packet arrivals

Computer networks are geographically distributed collections of communication links and switching proces￾sors, the purpose of which is to transport data between computers, workstations, and terminals. In general the elements of a computer network must follow compatible rules of operation together to function effectively. These rules of operation are known as protocols

94.1 Databases Database Abstraction • Data Models • Relational Databases • Hierarchical Databases • Network Databases • Architecture of a DBMS • Data Integrity and Security • Emerging Trends 94.2 Rule-Based Expert Systems

Wet milling of cereal grains differs fundament￾ally from dry milling in being a maceration process in which physical and chemical changes occur in the nature of the basic constituents - starch, protein and cell wall material - in order to bring about a complete dissociation of the endosperm cell contents with the release of the starch granules from the protein network