Locating Humanitarian Relief Effort Facility Using PCenter Method The impact of climate change and global warming is more obvious. Extreme weather is more apparent. Thailand encounters with tropical storm or typhoon every year since Thailand is located between two oceans, India Ocean and Pacific Ocean. Southern part of Thailand is area prone to flash flood, flood, and landslide. The relief effort is needed to prepare in advance including Pre and Postdisaster because the medical supplies should be in hand of the victim as soon as possible. The focus of this paper is to investigate mathematical model to locate the right location of humanitarian relief effort facility so as to minimize the maximum traveling distance or time to victims. Pcenter model is used as a preliminary model to find the suitable locations. Districts in Nakhon Sri Thammarat and Phatthalung provinces are investigated for the right location of relief effort facilities.

A Goal Programming Approach for a Fuzzy SingleSource Capacitated Facility Location Problem In this paper, we present a new mixedinteger linear goal programming (MILGP) model for a fuzzy singlesource capacitated facility location problem (FSSCFLP), in which demands are considered as triangular fuzzy values and capacity of facilities are fuzzy constraints. At first, the basic fuzzy model for the given problem is presented. Then, utilizing goal programming (GP) approach and fuzzy principals the proposed MILGP model is introduced. Accordingly, considering a certain acceptable deviation from capacities and demands, the cost of selecting facilities and serving the demand points is minimized. Finally, to investigate the effectiveness of the presented model some largesized problems generated randomly and all of them are solved globally in a reasonable time.