针对内燃机车中修解体组装作业往往采用以经验为主的生产管理方式这一瓶颈因素,通过AOA(Activity on Arc)网络建模框架下的工序分解、紧前分析和时间测度,将该复杂作业转化为符合重要度、缺陷度、复杂度、连贯度等原则要求的数学化流程...针对内燃机车中修解体组装作业往往采用以经验为主的生产管理方式这一瓶颈因素,通过AOA(Activity on Arc)网络建模框架下的工序分解、紧前分析和时间测度,将该复杂作业转化为符合重要度、缺陷度、复杂度、连贯度等原则要求的数学化流程模型描述,奠定了进一步定量研究的前提。在此基础上,开展了基于关键路径法的深入研究,通过发掘概念内涵和分析数据特征,创新性地提出了平均时间柔性指标和路径排序两项工作负荷强度评估方法,并应用于参与解体组装作业的实际班组,根据指标对比制定出流程改善的优化方案。展开更多
A better understanding of the long-term global carbon cycle required estimateof the changes in terrestrial carbon storage after the last glacial period. The results ofsimulation at mid-Holocene (MH) from PMIP (Paleocl...A better understanding of the long-term global carbon cycle required estimateof the changes in terrestrial carbon storage after the last glacial period. The results ofsimulation at mid-Holocene (MH) from PMIP (Paleoclimate Modeling Intercomparison Project) and themodern data from CRU (Climate Research Unit, East Anglia University, UK) allow us to use theAtmosphere-Vegetation Interaction Model (AVIM) to simulate the Chinese terrestrial net primaryproductivity (NPP) at 6ka BP and present time. The change of NPP and total NPP in China from now tomid-Holocene are about 54 g m^(-2)yr^(-1) and 0.63 Pg yr^(-1), respectively, mainly due to thebuild-up of temperate forest and tropical rainforest. Chinese terrestrial NPP variation from MH tonow is closely related to the variation in intensity of Asian monsoon, which controlled theclimate-vegetation pattern change.展开更多
文摘针对内燃机车中修解体组装作业往往采用以经验为主的生产管理方式这一瓶颈因素,通过AOA(Activity on Arc)网络建模框架下的工序分解、紧前分析和时间测度,将该复杂作业转化为符合重要度、缺陷度、复杂度、连贯度等原则要求的数学化流程模型描述,奠定了进一步定量研究的前提。在此基础上,开展了基于关键路径法的深入研究,通过发掘概念内涵和分析数据特征,创新性地提出了平均时间柔性指标和路径排序两项工作负荷强度评估方法,并应用于参与解体组装作业的实际班组,根据指标对比制定出流程改善的优化方案。
基金This work is supported by the Open Research Fund of Laboratory for Climate Studies of China Meteorological Administrationunder Grant Nos. CCSF2005-2-QH04 and LC2004C-04.
文摘A better understanding of the long-term global carbon cycle required estimateof the changes in terrestrial carbon storage after the last glacial period. The results ofsimulation at mid-Holocene (MH) from PMIP (Paleoclimate Modeling Intercomparison Project) and themodern data from CRU (Climate Research Unit, East Anglia University, UK) allow us to use theAtmosphere-Vegetation Interaction Model (AVIM) to simulate the Chinese terrestrial net primaryproductivity (NPP) at 6ka BP and present time. The change of NPP and total NPP in China from now tomid-Holocene are about 54 g m^(-2)yr^(-1) and 0.63 Pg yr^(-1), respectively, mainly due to thebuild-up of temperate forest and tropical rainforest. Chinese terrestrial NPP variation from MH tonow is closely related to the variation in intensity of Asian monsoon, which controlled theclimate-vegetation pattern change.
