The digital reconstruction of value chain plays an important role in achieving the goal of moving up the value chain in participatory manufacturing enterprises(PMEs).This study aims to investigate the configuration pa...The digital reconstruction of value chain plays an important role in achieving the goal of moving up the value chain in participatory manufacturing enterprises(PMEs).This study aims to investigate the configuration path for the realization of the digital reconstruction performance of value chain in PMEs.Taking 122 PMEs embedded in the Haier CosMoPlat ecosystem as research objects,we change the traditional research perspective and use fuzzy-set qualitative comparative analysis to explore how technology resources,information resources,relationship resources,and digital services provided by industrial internet platform empowerment synergistically affect the digital reconstruction performance of enterprise value chain.This study obtains two groups of high(non-high)performance,namely,product-driven and service-driven;and relationship-trapped and information-trapped.The results show that the impact of industrial internet platform empowerment on the digital reconstruction performance of value chain exhibits equifinality across PMEs at different levels and stages of development.展开更多
As a virtual representation of a specific physical asset,the digital twin has great potential for realizing the life cycle maintenance management of a dynamic system.Nevertheless,the dynamic stress concentration is ge...As a virtual representation of a specific physical asset,the digital twin has great potential for realizing the life cycle maintenance management of a dynamic system.Nevertheless,the dynamic stress concentration is generated since the state of the dynamic system changes over time.This generation of dynamic stress concentration has hindered the exploitation of the digital twin to reflect the dynamic behaviors of systems in practical engineering applications.In this context,this paper is interested in achieving real-time performance prediction of dynamic systems by developing a new digital twin framework that includes simulation data,measuring data,multi-level fusion modeling(M-LFM),visualization techniques,and fatigue analysis.To leverage its capacity,the M-LFM method combines the advantages of different surrogate models and integrates simulation and measured data,which can improve the prediction accuracy of dynamic stress concentration.A telescopic boom crane is used as an example to verify the proposed framework for stress prediction and fatigue analysis of the complex dynamic system.The results show that the M-LFM method has better performance in the computational efficiency and calculation accuracy of the stress prediction compared with the polynomial response surface method and the kriging method.In other words,the proposed framework can leverage the advantages of digital twins in a dynamic system:damage monitoring,safety assessment,and other aspects and then promote the development of digital twins in industrial fields.展开更多
We demonstrate the routing operation of optical packets by an optical packet switch consisting of an optical digital-to-analog conversion-type header processor, a wavelength converter using an electrically-tunable las...We demonstrate the routing operation of optical packets by an optical packet switch consisting of an optical digital-to-analog conversion-type header processor, a wavelength converter using an electrically-tunable laser, and an arrayed-waveguide grating router. A packet transfer by two-bit optical header was achieved for the first time.展开更多
基金supported by the key project of the National Natural Science Foundation of China(No.72332001)the General Project of the National Natural Science Foundation of China(No.72172031)the National Postdoctoral Program for Innovative Talents(No.GZC20231564).
文摘The digital reconstruction of value chain plays an important role in achieving the goal of moving up the value chain in participatory manufacturing enterprises(PMEs).This study aims to investigate the configuration path for the realization of the digital reconstruction performance of value chain in PMEs.Taking 122 PMEs embedded in the Haier CosMoPlat ecosystem as research objects,we change the traditional research perspective and use fuzzy-set qualitative comparative analysis to explore how technology resources,information resources,relationship resources,and digital services provided by industrial internet platform empowerment synergistically affect the digital reconstruction performance of enterprise value chain.This study obtains two groups of high(non-high)performance,namely,product-driven and service-driven;and relationship-trapped and information-trapped.The results show that the impact of industrial internet platform empowerment on the digital reconstruction performance of value chain exhibits equifinality across PMEs at different levels and stages of development.
基金supported by the National Key R&D Program of China(Grant No.2018YFB1700704)the National Natural Science Foundation of China(Grant No.52075068).
文摘As a virtual representation of a specific physical asset,the digital twin has great potential for realizing the life cycle maintenance management of a dynamic system.Nevertheless,the dynamic stress concentration is generated since the state of the dynamic system changes over time.This generation of dynamic stress concentration has hindered the exploitation of the digital twin to reflect the dynamic behaviors of systems in practical engineering applications.In this context,this paper is interested in achieving real-time performance prediction of dynamic systems by developing a new digital twin framework that includes simulation data,measuring data,multi-level fusion modeling(M-LFM),visualization techniques,and fatigue analysis.To leverage its capacity,the M-LFM method combines the advantages of different surrogate models and integrates simulation and measured data,which can improve the prediction accuracy of dynamic stress concentration.A telescopic boom crane is used as an example to verify the proposed framework for stress prediction and fatigue analysis of the complex dynamic system.The results show that the M-LFM method has better performance in the computational efficiency and calculation accuracy of the stress prediction compared with the polynomial response surface method and the kriging method.In other words,the proposed framework can leverage the advantages of digital twins in a dynamic system:damage monitoring,safety assessment,and other aspects and then promote the development of digital twins in industrial fields.
文摘We demonstrate the routing operation of optical packets by an optical packet switch consisting of an optical digital-to-analog conversion-type header processor, a wavelength converter using an electrically-tunable laser, and an arrayed-waveguide grating router. A packet transfer by two-bit optical header was achieved for the first time.
