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Paleo-environmental changes in the Yangtze Delta during past8000 years 被引量:9
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作者 ZHANGQiang JIANGTong +3 位作者 SHIYafeng LorenzKING liuchunling MartinMETZLER 《Journal of Geographical Sciences》 SCIE CSCD 2004年第1期105-112,共8页
The Yangtze Delta is one of the economically most developed areas in China. It is located in the eastern China monsoon region. Archaeological excavations and environment-archaeology studies over many yea... The Yangtze Delta is one of the economically most developed areas in China. It is located in the eastern China monsoon region. Archaeological excavations and environment-archaeology studies over many years in this region provide exceptional information about climate changes, development of human civilization and also human-environment interactions. Archaeological excavations made in the study region reveal that the development of Neolithic cultures is not continuous, which may be a result of extreme climatic events. The analysis of 14 C-dated buried paleotrees, peat and shell ridges show the rise and fall of human civilization in the study area. The research results presented in this paper confirm that human civilization collapsed six times in the Yangtze Delta, matching six high sea level epoches, peat accumulation and buried paleotrees formation periods respectively. This indicates that human activities in the Yangtze Delta are controlled by local climate changes and changing hydrological conditions. The collapse of the Liangzhu culture (5000 aBP-3800 aBP) in about 4000 aBP, after a tremendous flooding event, followed by a relatively backward Maqiao culture (3800 aBP-3200 aBP) confused researchers and aroused their great interest. The research results in this paper show that the collapse of the Liangzhu culture is a result of several factors, for example war and food shortage, but the flooding event occurred in the late Liangzhu culture epoch is the main factor therein. 展开更多
关键词 HOLOCENE flood events climate changes human-environment interactions Yangtze Delta
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考虑模块化和退货率的供应链大规模定制模型 被引量:5
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作者 黎继子 刘春玲 +1 位作者 肖位春 曹晓刚 《系统管理学报》 CSSCI CSCD 北大核心 2018年第3期546-558,共13页
供应链大规模定制化生产(MC)是基于上游大规模(MP)标准化生产与下游定制化(CP)生产的有机融合。在电子商务环境中,考虑退货率、模块化程度、生产提前期和定价因素的影响下,建立了供应链上下游企业大规模定制的基本模型。在此基础上,根... 供应链大规模定制化生产(MC)是基于上游大规模(MP)标准化生产与下游定制化(CP)生产的有机融合。在电子商务环境中,考虑退货率、模块化程度、生产提前期和定价因素的影响下,建立了供应链上下游企业大规模定制的基本模型。在此基础上,根据实施MC的不同情况,在竞争环境下,探讨了基于CODP上下游企业两种决策模式。分析发现,同时决策模式下的定制提前期较长且稳定,而主从决策模式下定制提前期存在缩短的趋势但并不明显。更进一步,将合作博弈引入到CODP上下游竞合环境中,构建了合作博弈下的大规模定制化模型。通过比较竞争和合作环境下的3种决策模式的最优解以及算例,发现在合作博弈决策中产品终端零售价格最低,定制提前期最短,但是存在难以控制,特别是合作博弈决策下模块程度最高,但是需要在一定的退货率的基础上才能维持稳定运作;同时,分析还发现,合作博弈决策下供应链中间批发价格高于竞争环境下同时决策和主从决策的价格,从而有效协调上下游企业的各自收益达到Pareto最优,防止供应链在实施MC时所产生的双边效应。 展开更多
关键词 大规模定制 电子商务 退货策略 模块化 提前期
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