美国俄亥俄州的战略地平线(Strategic Horizons LLP)顾问公司的共同创办人约瑟夫·派因二世(B.Joseph Pine Ⅱ)与詹姆斯·吉尔摩(James H.Gilmore)在美国《哈佛商业评论》双月刊1998年7-8月号"欢迎体验经济"(Welcome ...美国俄亥俄州的战略地平线(Strategic Horizons LLP)顾问公司的共同创办人约瑟夫·派因二世(B.Joseph Pine Ⅱ)与詹姆斯·吉尔摩(James H.Gilmore)在美国《哈佛商业评论》双月刊1998年7-8月号"欢迎体验经济"(Welcome to the Experience Economy)中指出:体验式经济(Experience Economy)时代已来临,其区分经济价值演进的四个阶段为货物(commodities)、商品(goods)、服务(services)与体验(experiences)。随着科技。展开更多
This paper systematically studies the two machine flow-shop scheduling problems with no-wait and deterministic unavailable interval constraints.To minimize the makespan,three integer programming mathematical models ar...This paper systematically studies the two machine flow-shop scheduling problems with no-wait and deterministic unavailable interval constraints.To minimize the makespan,three integer programming mathematical models are formulated for two-machine flow-shop with no-wait constraint,two-machine flow-shop with resumable unavailable interval constraint,and two-machine flow-shop with no-wait and non-resumable unavailable interval constraints problems,respectively.The optimal conditions of solv-ing the two-machine flow-shop with no-wait constraint problem by the permutation schedules,the two-machine flow-shop with resumable unavailable interval constraint problem by the Johnson algorithm,and two-machine flow-shop with no-wait and non-resumable unavailable interval constraints problem by the Gilmore and Gomory Algorithm(GGA)are presented,respectively.And the tight worst-case performance bounds of Johnson and GGA algorithms for these problems are also proved to be 2.Several instances are generated to demonstrate the proposed theorems.Based on the experimental results,GGA obtains the optimal solution for the two-machine flow-shop with no-wait constraint problem.Although it cannot reach the optimal solution for the two-machine flow-shop with resumable unavailable interval constraint problem,the optimal gap is 0.18%on average when the number of jobs is 100.Moreover,under some special conditions,it yields the optimal solution for the two-machine flow-shop with no-wait and non-resumable unavailable interval constraints problem.Therefore,GGA is an efficient heuristic to solve these problems.展开更多
"冠军",竞技场上最强者的代名词。每一项竞技运动,通常只有一个冠军,在犬类的竞技场上也是一样,BEST IN SHOW 只有一个,它是所有参与者的梦恕和目标,这不仅仅因为它体现了繁殖者的眼光、指导手的魅力和参赛犬只的优秀,更重要..."冠军",竞技场上最强者的代名词。每一项竞技运动,通常只有一个冠军,在犬类的竞技场上也是一样,BEST IN SHOW 只有一个,它是所有参与者的梦恕和目标,这不仅仅因为它体现了繁殖者的眼光、指导手的魅力和参赛犬只的优秀,更重要的是它代表着一种说服力。1877年5月8日～11日,在美国的 Gilmore’s Garden 举办了历史上的第一届西敏寺犬展,当时有1177只犬参加了此项赛事。直至今天,西敏寺犬展已经成功举办了132届。展开更多
姓名:布兰登·罗斯译名:Brandon Routh生日:1979年10月9日星座:天秤座身高:188 CM真它作品:《八面威风》TV(Eight Men Out)《奇异果女孩》TV(Gilmore Girls)《生命仅有一次》TV(One Life to Live)《铁证悬案》TV(Cold Case)《班纳...姓名:布兰登·罗斯译名:Brandon Routh生日:1979年10月9日星座:天秤座身高:188 CM真它作品:《八面威风》TV(Eight Men Out)《奇异果女孩》TV(Gilmore Girls)《生命仅有一次》TV(One Life to Live)《铁证悬案》TV(Cold Case)《班纳医生》TV(Oliver Beene)艰巨的选角任务华纳兄弟公司花了长达十年多的时间,计划把超人的神话再度搬上大银幕,但一直没有定案。当导演布莱恩·辛格(Bryan Singer)决定接手担任导演后,他坚持启用新面孔饰演超人,就像当年1978年的《超人》电影启用克里斯托弗·里夫一样。经过遍及美国、英国、加拿大和澳洲等地的大规模选角试镜之后,25岁的布兰登·罗斯因为外型酷似漫画中的超人形象,加上来自美国中西部的朴实背景。展开更多
文摘美国俄亥俄州的战略地平线(Strategic Horizons LLP)顾问公司的共同创办人约瑟夫·派因二世(B.Joseph Pine Ⅱ)与詹姆斯·吉尔摩(James H.Gilmore)在美国《哈佛商业评论》双月刊1998年7-8月号"欢迎体验经济"(Welcome to the Experience Economy)中指出:体验式经济(Experience Economy)时代已来临,其区分经济价值演进的四个阶段为货物(commodities)、商品(goods)、服务(services)与体验(experiences)。随着科技。
基金supported in part by the National Natural Sci-ence Foundation of China(NSFC)under Grant No.71801051.
文摘This paper systematically studies the two machine flow-shop scheduling problems with no-wait and deterministic unavailable interval constraints.To minimize the makespan,three integer programming mathematical models are formulated for two-machine flow-shop with no-wait constraint,two-machine flow-shop with resumable unavailable interval constraint,and two-machine flow-shop with no-wait and non-resumable unavailable interval constraints problems,respectively.The optimal conditions of solv-ing the two-machine flow-shop with no-wait constraint problem by the permutation schedules,the two-machine flow-shop with resumable unavailable interval constraint problem by the Johnson algorithm,and two-machine flow-shop with no-wait and non-resumable unavailable interval constraints problem by the Gilmore and Gomory Algorithm(GGA)are presented,respectively.And the tight worst-case performance bounds of Johnson and GGA algorithms for these problems are also proved to be 2.Several instances are generated to demonstrate the proposed theorems.Based on the experimental results,GGA obtains the optimal solution for the two-machine flow-shop with no-wait constraint problem.Although it cannot reach the optimal solution for the two-machine flow-shop with resumable unavailable interval constraint problem,the optimal gap is 0.18%on average when the number of jobs is 100.Moreover,under some special conditions,it yields the optimal solution for the two-machine flow-shop with no-wait and non-resumable unavailable interval constraints problem.Therefore,GGA is an efficient heuristic to solve these problems.
文摘"冠军",竞技场上最强者的代名词。每一项竞技运动,通常只有一个冠军,在犬类的竞技场上也是一样,BEST IN SHOW 只有一个,它是所有参与者的梦恕和目标,这不仅仅因为它体现了繁殖者的眼光、指导手的魅力和参赛犬只的优秀,更重要的是它代表着一种说服力。1877年5月8日～11日,在美国的 Gilmore’s Garden 举办了历史上的第一届西敏寺犬展,当时有1177只犬参加了此项赛事。直至今天,西敏寺犬展已经成功举办了132届。
文摘姓名:布兰登·罗斯译名:Brandon Routh生日:1979年10月9日星座:天秤座身高:188 CM真它作品:《八面威风》TV(Eight Men Out)《奇异果女孩》TV(Gilmore Girls)《生命仅有一次》TV(One Life to Live)《铁证悬案》TV(Cold Case)《班纳医生》TV(Oliver Beene)艰巨的选角任务华纳兄弟公司花了长达十年多的时间,计划把超人的神话再度搬上大银幕,但一直没有定案。当导演布莱恩·辛格(Bryan Singer)决定接手担任导演后,他坚持启用新面孔饰演超人,就像当年1978年的《超人》电影启用克里斯托弗·里夫一样。经过遍及美国、英国、加拿大和澳洲等地的大规模选角试镜之后,25岁的布兰登·罗斯因为外型酷似漫画中的超人形象,加上来自美国中西部的朴实背景。
