This paper presents an improved hybrid algorithm and a multi-objective model to tackle the scheduling problem of multiple Automated Guided Vehicles(AGVs)under the composite operation mode.The multi-objective model aim...This paper presents an improved hybrid algorithm and a multi-objective model to tackle the scheduling problem of multiple Automated Guided Vehicles(AGVs)under the composite operation mode.The multi-objective model aims to minimize the maximum completion time,the total distance covered by AGVs,and the distance traveled while empty-loaded.The improved hybrid algorithm combines the improved genetic algorithm(GA)and the simulated annealing algorithm(SA)to strengthen the local search ability of the algorithm and improve the stability of the calculation results.Based on the characteristics of the composite operation mode,the authors introduce the combined coding and parallel decoding mode and calculate the fitness function with the grey entropy parallel analysis method to solve the multi-objective problem.The grey entropy parallel analysis method is a combination of the grey correlation analysis method and the entropy weighting method to solve multi-objective solving problems.A task advance evaluation strategy is proposed in the process of crossover and mutation operator to guide the direction of crossover and mutation.The computational experiments results show that the improved hybrid algorithm is better than the GA and the genetic algorithm with task advance evaluation strategy(AEGA)in terms of convergence speed and solution results,and the effectiveness of the multi-objective solution is proved.All three objectives are optimized and the proposed algorithm has an optimization of 7.6%respectively compared with the GA and 3.4%compared with the AEGA in terms of the objective of maximum completion time.展开更多
目的了解实施基于岗位和工作量的绩效模式对重症监护室(intensive care unit,ICU)护士工作满意度的影响。方法将实施基于岗位和工作量的绩效模式后的2015年4-9月全院护士、ICU护士的平均薪酬、工作满意度情况与2014年4-9月的情况进行比...目的了解实施基于岗位和工作量的绩效模式对重症监护室(intensive care unit,ICU)护士工作满意度的影响。方法将实施基于岗位和工作量的绩效模式后的2015年4-9月全院护士、ICU护士的平均薪酬、工作满意度情况与2014年4-9月的情况进行比较。结果 2015年4-9月全院护士的平均绩效较2014年4-9月增长2.34%,两组比较差异无统计学意义(P>0.05);但同期ICU护士的平均绩效增长14.27%,差异有统计学意义(P<0.01);同时,ICU护士在总体工作满意度和对管理模式、工作强度和压力、职业认可和工作待遇方面的满意度均有提高(P<0.05或P<0.01);在工作氛围影响上差异无统计学意义(P>0.05)。结论实施基于岗位和工作量的护理绩效分配模式后,ICU的护士工作满意度有了显著提高。展开更多
基金the Shandong Province Key Research and Development Program under Grant No.2021SFGC0601.
文摘This paper presents an improved hybrid algorithm and a multi-objective model to tackle the scheduling problem of multiple Automated Guided Vehicles(AGVs)under the composite operation mode.The multi-objective model aims to minimize the maximum completion time,the total distance covered by AGVs,and the distance traveled while empty-loaded.The improved hybrid algorithm combines the improved genetic algorithm(GA)and the simulated annealing algorithm(SA)to strengthen the local search ability of the algorithm and improve the stability of the calculation results.Based on the characteristics of the composite operation mode,the authors introduce the combined coding and parallel decoding mode and calculate the fitness function with the grey entropy parallel analysis method to solve the multi-objective problem.The grey entropy parallel analysis method is a combination of the grey correlation analysis method and the entropy weighting method to solve multi-objective solving problems.A task advance evaluation strategy is proposed in the process of crossover and mutation operator to guide the direction of crossover and mutation.The computational experiments results show that the improved hybrid algorithm is better than the GA and the genetic algorithm with task advance evaluation strategy(AEGA)in terms of convergence speed and solution results,and the effectiveness of the multi-objective solution is proved.All three objectives are optimized and the proposed algorithm has an optimization of 7.6%respectively compared with the GA and 3.4%compared with the AEGA in terms of the objective of maximum completion time.
文摘目的了解实施基于岗位和工作量的绩效模式对重症监护室(intensive care unit,ICU)护士工作满意度的影响。方法将实施基于岗位和工作量的绩效模式后的2015年4-9月全院护士、ICU护士的平均薪酬、工作满意度情况与2014年4-9月的情况进行比较。结果 2015年4-9月全院护士的平均绩效较2014年4-9月增长2.34%,两组比较差异无统计学意义(P>0.05);但同期ICU护士的平均绩效增长14.27%,差异有统计学意义(P<0.01);同时,ICU护士在总体工作满意度和对管理模式、工作强度和压力、职业认可和工作待遇方面的满意度均有提高(P<0.05或P<0.01);在工作氛围影响上差异无统计学意义(P>0.05)。结论实施基于岗位和工作量的护理绩效分配模式后,ICU的护士工作满意度有了显著提高。
