臺灣博碩士論文加值系統

Inside NTUH warehouse for clinic history file, every day works of consolidation are executed in order to create free space for store more files, these files are store with an age based storage policy; the work is executed in direction to day ninety that is the oldest day stored. This thesis studies the possibility of change the direction of the consolidation works and the frequency that those works are executed in order to reduce the effort realize in the execution of consolidation work. First the recurrent demand is study to establish the size of everyday and later the distance each block has to be move is determined. Finally the effort of move the files to different anchor days is calculated and the day with the smallest effort is compared with the day choose by hospital.

ACKNOWLEDGEMENTS ..I
ABSTRACT II
TABLE OF CONTENTS III
LIST OF FIGURES V
LIST OF TABLES VII
1. INTRODUCTION 1
1.1 Background and Motivation 3
1.2 Problem Description 5
1.3 Research Objectives and Scope 6
1.4 Thesis Organization 7
2. LITERATURE REVIEW 7
2.1 Literature Review 8
2.1.1 Warehouse operation 12
2.1.2 Storage policies 15
3. METHODOLOGY 16
3.1 Data analysis 20
3.2 Minimize Consolidation Efforts 23
3.2.1 How day T is conformed 23
3.2.2 Revisit Behavior 25
3.2.3 Size of 26
3.2.4 Distance with consolidation every day. 29
3.2.5 Distance with consolidation every two days 36
3.2.6 Optimization Formula 41
4. Applied Methodology 43
4.1 Obtain a real U 44
4.1.1 Find P 44
4.1.2 Size of U 46
4.2 Minimize Consolidation Efforts for everyday consolidation 47
4.3 Minimize Consolidation Efforts for every two days consolidation works executed 49
5. RESULTS 51
5.1 The results 51
5.2 Comparison between Result and NTUH method 52
5.3 Comparison between consolidate everyday or every two days 54
6. CONCLUSION 57
6.1 Conclusion 57
6.2 Suggestion for Future Research 58
6.2.1 Same facilities 59
6.2.2 Different facilities 60
REFERENCES 61

Baker, P. and M. Canessa (2009). "Warehouse design: A structured approach." European Journal of Operational Research 193(2): 425-436.

Berg, J. P. v. d. and W. H. M. Zijm (1999). "Models for warehouse management: Classification and examples." International Journal of Production Economics 59(1-3): 519-528.

Cormier, G. and E. A. Gunn (1992). "A review of warehouse models." European Journal of Operational Research 58(1): 3-13.

De Koster, R., T. Le-Duc, et al. (2007). "Design and control of warehouse order picking: A literature review." European Journal of Operational Research 182(2): 481-501.
Goetschalckx Marc, H. Donald Ratliff (1990). “Shared Storage Policies Based on the Duration Stay of Unit Loads.” Management Science Vol. 36, No. 9, pp. 1120-1132

Gu, J., M. Goetschalckx, et al. (2007). "Research on warehouse operation: A comprehensive review." European Journal of Operational Research 177(1): 1-21.

Laoutaris, N., V. Zissimopoulos, et al. (2005). "On the optimization of storage capacity allocation for content distribution." Computer Networks 47(3): 409-428.

Larson, T. N., H. March, et al. (1997). "A heuristic approach to warehouse layout with class-based storage." IIE Transactions 29(4): 337-348.

Malmborg, C. J. (1996). "Storage assignment policy tradeoffs." International Journal of Production Research 34(2): 363-378.

Mookerjee, V. S. (2002). "Policies for data archival in hierarchical storage management." European Journal of Operational Research 138(2): 413-435.

Pan, J. C.-H. and M.-H. Wu (2009). "A study of storage assignment problem for an order picking line in a pick-and-pass warehousing system." Computers & Industrial Engineering 57(1): 261-268.

Petersen, C. G. and G. Aase (2004). "A comparison of picking, storage, and routing policies in manual order picking." International Journal of Production Economics 92(1): 11-19.

Roodbergen, K. J. and R. Koster (2001). "Routing methods for warehouses with multiple cross aisles." International Journal of Production Research 39(9): 1865-1883.

Rosenblatt, M. J. and Y. Roll (1984). "Warehouse design with storage policy considerations." International Journal of Production Research 22(5): 809-821.

Rosenblatt, M. J. and Y. Roll (1988). "Warehouse capacity in a stochastic environment." International Journal of Production Research 26(12): 1847-1851.

Vakali, A. (2000). "Data block prefetching and caching in a hierarchical storage model." Information Sciences 128(1-2): 19-41.

Van den Berg, J. P. (1999). "A literature survey on planning and control of warehousing systems." IIE Transactions 31(8): 751-762.

Won, J. and S. Olafsson (2005). "Joint order batching and order picking in warehouse operations." International Journal of Production Research 43(7): 1427-1442.

Yu, M. and R. B. M. de Koster (2009). "The impact of order batching and picking area zoning on order picking system performance." European Journal of Operational Research 198(2): 480-490.