物流分析工具包。Facility location: Continuous minisum facility location, alternate location-allocation (ALA) procedure, discrete uncapacitated facility location
Vehicle routing: VRP, VRP with time windows, traveling salesman problem (TSP)
Networks: Shortest path, min cost network flow, minimum spanning tree problems
Geocoding: U.S. city or ZIP code to longitude and latitude, longitude and latitude to nearest city, Mercator projection plotting
Layout: Steepest descent pairwise interchange (SDPI) heuristic for QAP
Material handling: Equipment selection
General purpose: Linear programming using the revised simplex method, mixed-integer linear programming (MILP) branch and bound procedure
Data: U.S. cities with populations of at least 10,000, U.S. highway network (Oak Ridge National Highway Network), U.S. 3- and 5-digit ZIP codes
利用“原始套接字”(Raw Socket),我們可訪問位于基層的傳輸協議。本章專門講解如
何運用這種原始套接字,來模擬I P的一些實用工具,比如Tr a c e r o u t e和P i n g程序等等。使用原
始套接字,亦可對I P頭信息進行實際的操作。本章只關心I P協議;至于如何針對其他協議使
用原始套接字,我們不打算提及。而且,大多數協議(除AT M以外)根本就不支持原始套接
字。所有原始套接字都是使用S O C K _ R AW這個套接字類型來創建的,而且目前只有Wi n s o c k
2提供了對它的支持。因此,無論Microsoft Windows CE 還是老版本的Windows 95 (無
Winsock 2升級)均不能利用原始套接字的能力。