237 11 L OCATION P ROBLEMS WITH D EMAND REGIONS DERYA DINLER, MUSTAFA KEMAL TURAL, AND CEM İYIGÜN 11.1 Introduction Facility location problems involve strategic decisions requiring large investments and long-term plannings. hey have been extensively studied by researchers from a variety of disciplines, like geographers and marketing and supply chain specialists. Contents 11.1 Introduction 237 11.2 Location Problems with Demand Points 239 11.3 Location Problems with Demand Regions 240 11.3.1 Problems with Maximum Distance 243 11.3.1.1 Single-Facility Minisum Problem with Euclidean Maximum Distance 243 11.3.1.2 Other Minisum Problems with Maximum Distance 244 11.3.2 Problems with Minimum Distance 245 11.3.2.1 Minisum Problems with Minimum Distance 245 11.3.2.2 Minimax Problems with Minimum Distance 246 11.3.3 Problems with Average Distance 246 11.3.3.1 Minisum Problems with Average Distance 246 11.3.3.2 Minimax Problems with Average Distance 248 11.3.4 Problems on Networks 248 11.4 Conclusions 248 References 251 K22513_C011.indd 237 8/6/2014 3:29:40 PM