The parameters of the sdg interacting boson model Hamiltonian are calculated for the <sup>104-110</sup>Pdisotopes.The calculations utilize the microscopic procedure based on the Dyson boson mapping propose...The parameters of the sdg interacting boson model Hamiltonian are calculated for the <sup>104-110</sup>Pdisotopes.The calculations utilize the microscopic procedure based on the Dyson boson mapping proposedby Yang-Liu-Qi and extended to include the g boson effects.The calculated parameters reproduce thosevalues from the phenomenological fits.The resulting spectra are compared with the experimental spectra.展开更多
对于过程系统,危险与可操作性(Hazard and Operability,简称HAZOP)分析是一套应用最广的评价方法。但是人工评价存在费时、费力、成本高等缺点。本文介绍了一种基于SDG(Signed Directed Graph)的计算机辅助危险与可操作性分析系统,该系...对于过程系统,危险与可操作性(Hazard and Operability,简称HAZOP)分析是一套应用最广的评价方法。但是人工评价存在费时、费力、成本高等缺点。本文介绍了一种基于SDG(Signed Directed Graph)的计算机辅助危险与可操作性分析系统,该系统基于SDG定性模型。过程模型利用模型库中的单元模型建立,通用性强,且又能分析各种具体工艺的特定信息。应用实验表明,与人工专家评价相比,该系统具有完备性好、省时、省力、成本低、评价结果系统性和条理性强等众多优点。展开更多
At present, the modeling method used in the batch process by signed directed graph (SDG) is oriented to the process in normal running state, which cannot describe the operating logic in abnormal running state, and it ...At present, the modeling method used in the batch process by signed directed graph (SDG) is oriented to the process in normal running state, which cannot describe the operating logic in abnormal running state, and it is inadequate to cover all faults and hazards.When the SDG model used for computer-aided hazard and operability study (HAZOP) is built for the complex chemical process including the batch process, the model of the batch process cannot always be associated to that of the other continuous systems.In order to meet the demand of computer-aided HAZOP, the paper presents a dynamic SDG modeling method based on the present SDG-HAZOP modeling method to deal with the batch process.The idea and procedures of dynamic modeling were elaborated.A real case about the fly ash removal in a complex process of coal-to-oil was modeled and analyzed by using the proposed method, which can resolve two problems at the same time: the sequential model about the SDG modeling of the batch process and the maximal covering of the faults and hazards.展开更多
针对复杂系统符号定向图(SDG,Signal Directed Graph)定性建模存在的困难,提出一种改进型SDG定性建模方法。通过对目前存在的三种SDG定性建模方法进行比较,阐述了基于功能单元划分的符号定向图(F-SDG,SDG Based on Function Unit)方法...针对复杂系统符号定向图(SDG,Signal Directed Graph)定性建模存在的困难,提出一种改进型SDG定性建模方法。通过对目前存在的三种SDG定性建模方法进行比较,阐述了基于功能单元划分的符号定向图(F-SDG,SDG Based on Function Unit)方法起源于基于经验知识的SDG建模法,并对F-SDG建模法的理论基础进行概述;给出F-SDG建模方法的精确数学定义、模型描述图例以及具体建模步骤;以物资供应过程为例,进行F-SDG定性建模过程演示,最后,证实了F-SDG的可行性与实用性。展开更多
Starting from one of the microscopic sdg interacting boson approximations, the lead-ing terms in the interaction Hamiltonian are discussed by using numerical investigations. Com-parisons of both the calculated levels ...Starting from one of the microscopic sdg interacting boson approximations, the lead-ing terms in the interaction Hamiltonian are discussed by using numerical investigations. Com-parisons of both the calculated levels and the overlap of wave functions between the exact re-sults and the approximations are made to find out negligible part in the Hamiltonian. The re-sults show that the leading terms given in this paper may provide a way to simplify the complexcalculations.展开更多
基金①The project supported by the National Natural Science Foundation of China
文摘The parameters of the sdg interacting boson model Hamiltonian are calculated for the <sup>104-110</sup>Pdisotopes.The calculations utilize the microscopic procedure based on the Dyson boson mapping proposedby Yang-Liu-Qi and extended to include the g boson effects.The calculated parameters reproduce thosevalues from the phenomenological fits.The resulting spectra are compared with the experimental spectra.
文摘对于过程系统,危险与可操作性(Hazard and Operability,简称HAZOP)分析是一套应用最广的评价方法。但是人工评价存在费时、费力、成本高等缺点。本文介绍了一种基于SDG(Signed Directed Graph)的计算机辅助危险与可操作性分析系统,该系统基于SDG定性模型。过程模型利用模型库中的单元模型建立,通用性强,且又能分析各种具体工艺的特定信息。应用实验表明,与人工专家评价相比,该系统具有完备性好、省时、省力、成本低、评价结果系统性和条理性强等众多优点。
文摘At present, the modeling method used in the batch process by signed directed graph (SDG) is oriented to the process in normal running state, which cannot describe the operating logic in abnormal running state, and it is inadequate to cover all faults and hazards.When the SDG model used for computer-aided hazard and operability study (HAZOP) is built for the complex chemical process including the batch process, the model of the batch process cannot always be associated to that of the other continuous systems.In order to meet the demand of computer-aided HAZOP, the paper presents a dynamic SDG modeling method based on the present SDG-HAZOP modeling method to deal with the batch process.The idea and procedures of dynamic modeling were elaborated.A real case about the fly ash removal in a complex process of coal-to-oil was modeled and analyzed by using the proposed method, which can resolve two problems at the same time: the sequential model about the SDG modeling of the batch process and the maximal covering of the faults and hazards.
文摘针对复杂系统符号定向图(SDG,Signal Directed Graph)定性建模存在的困难,提出一种改进型SDG定性建模方法。通过对目前存在的三种SDG定性建模方法进行比较,阐述了基于功能单元划分的符号定向图(F-SDG,SDG Based on Function Unit)方法起源于基于经验知识的SDG建模法,并对F-SDG建模法的理论基础进行概述;给出F-SDG建模方法的精确数学定义、模型描述图例以及具体建模步骤;以物资供应过程为例,进行F-SDG定性建模过程演示,最后,证实了F-SDG的可行性与实用性。
基金The project supported by the National Natural Science Foundation of China
文摘Starting from one of the microscopic sdg interacting boson approximations, the lead-ing terms in the interaction Hamiltonian are discussed by using numerical investigations. Com-parisons of both the calculated levels and the overlap of wave functions between the exact re-sults and the approximations are made to find out negligible part in the Hamiltonian. The re-sults show that the leading terms given in this paper may provide a way to simplify the complexcalculations.
