To improve the productivity of cluster tools in semiconductor fabrications,on the basis of stating scheduling problems,a try and error-based scheduling algorithm was proposed with residency time constraints and an obj...To improve the productivity of cluster tools in semiconductor fabrications,on the basis of stating scheduling problems,a try and error-based scheduling algorithm was proposed with residency time constraints and an objective of minimizing Makespan for the wafer jobs in cluster tools.Firstly,mathematical formulations of scheduling problems were presented by using assumptions and definitions of a scheduling domain.Resource conflicts were analyzed in the built scheduling model,and policies to solve resource conflicts were built.A scheduling algorithm was developed.Finally,the performances of the proposed algorithm were evaluated and compared with those of other methods by simulations.Experiment results indicate that the proposed algorithm is effective and practical in solving the scheduling problem of the cluster tools.展开更多
In Turkish, the phrase ＂armed forces＂ is usually interchangeable with the word ＂army＂, the land forces constituting the crushing majority of the whole military population. Turkish military serves as a nation-build...In Turkish, the phrase ＂armed forces＂ is usually interchangeable with the word ＂army＂, the land forces constituting the crushing majority of the whole military population. Turkish military serves as a nation-builder, absorbing and unifying all young males in the compulsory service with no discrimination whatsoever. Most of the other neighboring countries have all-professional-armed-forces, which consolidate a different and distinct class or even a sort of cast within the bosom of that very nation, thereby effectively working toward a disintegration, let alone unification. The incorporating and integrating function of the Turkish military can be understood better when this valuable comparison is taken into consideration. All valuable potentials attain recognition, there being no place for waste, as far as human resources go. The we-feeling there extends to each and every one of the soldiers. The military organization not only prepares the young man-power for a prospective armed conflict, but also imparts many good qualities and virtuous values into their characters like discipline, perseverance, comradeship, and self-esteem. The military, in a sense, serves as a process of initiation or a rite de passage, the end-result of which upon the honorable discharge at the end of the service term, is only a more mature and dignified young person than before.展开更多
A decision-making model of gear process for green manufacturing is presented, which integrates the five objectives including the time, quality, cost, resource consumption and environmental impact of gear process toget...A decision-making model of gear process for green manufacturing is presented, which integrates the five objectives including the time, quality, cost, resource consumption and environmental impact of gear process together into the development of a strategy. Mathematical description is provided for the multi-objectives decision-making model. The expert judgment and the multi-fuzzy assessment theory are introduced to do sensible comparisons and give quantitative results. A case study on practical cutting tool selection in gear machining demonstrates that the proposed model is applicable.展开更多
基金Projects(71071115,60574054) supported by the National Natural Science Foundation of China
文摘To improve the productivity of cluster tools in semiconductor fabrications,on the basis of stating scheduling problems,a try and error-based scheduling algorithm was proposed with residency time constraints and an objective of minimizing Makespan for the wafer jobs in cluster tools.Firstly,mathematical formulations of scheduling problems were presented by using assumptions and definitions of a scheduling domain.Resource conflicts were analyzed in the built scheduling model,and policies to solve resource conflicts were built.A scheduling algorithm was developed.Finally,the performances of the proposed algorithm were evaluated and compared with those of other methods by simulations.Experiment results indicate that the proposed algorithm is effective and practical in solving the scheduling problem of the cluster tools.
文摘In Turkish, the phrase ＂armed forces＂ is usually interchangeable with the word ＂army＂, the land forces constituting the crushing majority of the whole military population. Turkish military serves as a nation-builder, absorbing and unifying all young males in the compulsory service with no discrimination whatsoever. Most of the other neighboring countries have all-professional-armed-forces, which consolidate a different and distinct class or even a sort of cast within the bosom of that very nation, thereby effectively working toward a disintegration, let alone unification. The incorporating and integrating function of the Turkish military can be understood better when this valuable comparison is taken into consideration. All valuable potentials attain recognition, there being no place for waste, as far as human resources go. The we-feeling there extends to each and every one of the soldiers. The military organization not only prepares the young man-power for a prospective armed conflict, but also imparts many good qualities and virtuous values into their characters like discipline, perseverance, comradeship, and self-esteem. The military, in a sense, serves as a process of initiation or a rite de passage, the end-result of which upon the honorable discharge at the end of the service term, is only a more mature and dignified young person than before.
文摘A decision-making model of gear process for green manufacturing is presented, which integrates the five objectives including the time, quality, cost, resource consumption and environmental impact of gear process together into the development of a strategy. Mathematical description is provided for the multi-objectives decision-making model. The expert judgment and the multi-fuzzy assessment theory are introduced to do sensible comparisons and give quantitative results. A case study on practical cutting tool selection in gear machining demonstrates that the proposed model is applicable.
