Developers still need design workflow system according to users＇ specific needs, though workflow management coalition standardized the five kinds of abstract interfaces in workflow reference model. Specific business ...Developers still need design workflow system according to users＇ specific needs, though workflow management coalition standardized the five kinds of abstract interfaces in workflow reference model. Specific business process characteristics are still supported by specific workflow system. A set of common functionalities of workflow engine are abstracted from business component, so the reusability of business component is extended into workflow engine and composition method is proposed. Needs of different business requirements and characteristics are met by reusing the workflow engine.展开更多
In this work,the multi-fidelity(MF)simulation driven Bayesian optimization(BO)and its advanced form are proposed to optimize antennas.Firstly,the multiple objective targets and the constraints are fused into one compr...In this work,the multi-fidelity(MF)simulation driven Bayesian optimization(BO)and its advanced form are proposed to optimize antennas.Firstly,the multiple objective targets and the constraints are fused into one comprehensive objective function,which facilitates an end-to-end way for optimization.Then,to increase the efficiency of surrogate construction,we propose the MF simulation-based BO(MFBO),of which the surrogate model using MF simulation is introduced based on the theory of multi-output Gaussian process.To further use the low-fidelity(LF)simulation data,the modified MFBO(M-MFBO)is subsequently proposed.By picking out the most potential points from the LF simulation data and re-simulating them in a high-fidelity(HF)way,the M-MFBO has a possibility to obtain a better result with negligible overhead compared to the MFBO.Finally,two antennas are used to testify the proposed algorithms.It shows that the HF simulation-based BO(HFBO)outperforms the traditional algorithms,the MFBO performs more effectively than the HFBO,and sometimes a superior optimization result can be achieved by reusing the LF simulation data.展开更多
The volume tendency of in-use and end-of-life computers in China were analyzed; the emerging danger of obsolete computers by incorrect treatment was summarized; the integration disposal technologies based on 3R (recyc...The volume tendency of in-use and end-of-life computers in China were analyzed; the emerging danger of obsolete computers by incorrect treatment was summarized; the integration disposal technologies based on 3R (recycle, remanufacture and reuse) engineering aiming at monitors, electronic devices, metals, plastics materials, and overall computers were put forward; the economic and social benefits were also analyzed. The results show that the integration disposal process of obsolete computer is an optimum approach to save the resource of electromechanical products. Remanufacturing and disposal 100 thousand obsolete computers per year can create profits about RMB10million yuan and provide employment for 300 persons. It can be deduced that there are great potential opportunities for the obsolete computers disposal industry containing recycle, remanufacture and reuse engineering.展开更多
The activities and stabilities of the polymer-bound palladium complexes fordecarbonyl-arylation were investigated in this paper.It was found that the activities ofpolymer-bound complexes are comparable to those of the...The activities and stabilities of the polymer-bound palladium complexes fordecarbonyl-arylation were investigated in this paper.It was found that the activities ofpolymer-bound complexes are comparable to those of their homogeneous counterparts.Among the catalysts examined,the sulfur-containing polymer-bound palladium complexeshave high activity and better stability than the phosphine-,amine-and nitrile-containingpolymerie palladium catalysts.Experimental work was undertaken to evaluate the possibleside reactions.The factors which caused the catalyst deactivation were discussed and the in-flucnce of experimental parameters on the reaction was studied as well.展开更多
文摘Developers still need design workflow system according to users＇ specific needs, though workflow management coalition standardized the five kinds of abstract interfaces in workflow reference model. Specific business process characteristics are still supported by specific workflow system. A set of common functionalities of workflow engine are abstracted from business component, so the reusability of business component is extended into workflow engine and composition method is proposed. Needs of different business requirements and characteristics are met by reusing the workflow engine.
基金supported by the National Key Research and Development Program of China(2019YFB1803205)the Key Research and Development Project of Shaanxi Province(2019GY-007)+1 种基金the National Natural Science Foundation of China(61801369)the Fundamental R esearch Funds for the Central Universities(XZD012021012)。
文摘In this work,the multi-fidelity(MF)simulation driven Bayesian optimization(BO)and its advanced form are proposed to optimize antennas.Firstly,the multiple objective targets and the constraints are fused into one comprehensive objective function,which facilitates an end-to-end way for optimization.Then,to increase the efficiency of surrogate construction,we propose the MF simulation-based BO(MFBO),of which the surrogate model using MF simulation is introduced based on the theory of multi-output Gaussian process.To further use the low-fidelity(LF)simulation data,the modified MFBO(M-MFBO)is subsequently proposed.By picking out the most potential points from the LF simulation data and re-simulating them in a high-fidelity(HF)way,the M-MFBO has a possibility to obtain a better result with negligible overhead compared to the MFBO.Finally,two antennas are used to testify the proposed algorithms.It shows that the HF simulation-based BO(HFBO)outperforms the traditional algorithms,the MFBO performs more effectively than the HFBO,and sometimes a superior optimization result can be achieved by reusing the LF simulation data.
文摘The volume tendency of in-use and end-of-life computers in China were analyzed; the emerging danger of obsolete computers by incorrect treatment was summarized; the integration disposal technologies based on 3R (recycle, remanufacture and reuse) engineering aiming at monitors, electronic devices, metals, plastics materials, and overall computers were put forward; the economic and social benefits were also analyzed. The results show that the integration disposal process of obsolete computer is an optimum approach to save the resource of electromechanical products. Remanufacturing and disposal 100 thousand obsolete computers per year can create profits about RMB10million yuan and provide employment for 300 persons. It can be deduced that there are great potential opportunities for the obsolete computers disposal industry containing recycle, remanufacture and reuse engineering.
基金This work was supported by the Science Foundation of Chinese Academy of sciences.
文摘The activities and stabilities of the polymer-bound palladium complexes fordecarbonyl-arylation were investigated in this paper.It was found that the activities ofpolymer-bound complexes are comparable to those of their homogeneous counterparts.Among the catalysts examined,the sulfur-containing polymer-bound palladium complexeshave high activity and better stability than the phosphine-,amine-and nitrile-containingpolymerie palladium catalysts.Experimental work was undertaken to evaluate the possibleside reactions.The factors which caused the catalyst deactivation were discussed and the in-flucnce of experimental parameters on the reaction was studied as well.
