1. SCREEN Holdings Co., Ltd., Kyoto 612-8486, Japan
2. Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Kyoto 606-8585, Japan
3. Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0E8, Canada
4. GERAD and Department of Mathematics and Industrial Engineering, Polytechnique Montreal, Montreal, Quebec H3T 1N8, Canada