With the rapid development of the Industrial Internet of Things(IIoT),the traditional centralized cloud processing model has encountered the challenges of high communication latency and high energy consumption in hand...With the rapid development of the Industrial Internet of Things(IIoT),the traditional centralized cloud processing model has encountered the challenges of high communication latency and high energy consumption in handling industrial big data tasks.This paper aims to propose a low-latency and lowenergy path computing scheme for the above problems.This scheme is based on the cloud-fog network architecture.The computing resources of fog network devices in the fog computing layer are used to complete task processing step by step during the data interaction from industrial field devices to the cloud center.A collaborative scheduling strategy based on the particle diversity discrete binary particle swarm optimization(PDBPSO)algorithm is proposed to deploy manufacturing tasks to the fog computing layer reasonably.The task in the form of a directed acyclic graph(DAG)is mapped to a factory fog network in the form of an undirected graph(UG)to find the appropriate computing path for the task,significantly reducing the task processing latency under energy consumption constraints.Simulation experiments show that this scheme’s latency performance outperforms the strategy that tasks are wholly offloaded to the cloud and the strategy that tasks are entirely offloaded to the edge equipment.展开更多
Ni-rich layered oxides(Ni>80%)with high energy density have become a mainstream cathode material for Li-ion batteries.However,irreversible phase transitions and interface instability are deep-seated challenges in c...Ni-rich layered oxides(Ni>80%)with high energy density have become a mainstream cathode material for Li-ion batteries.However,irreversible phase transitions and interface instability are deep-seated challenges in commercializing Ni-rich materials.This study used a collaborative modification strategy involving doping and coating with quadrivalent elements to construct Ni-rich materials.In particular,introducing tetravalent Zr makes the valence change of Ni(2+to 4+)more accessible to complete spontaneously during the charging and discharging processes,which significantly suppresses the cationic mixing and irreversible phase transition(H2?H3).Combining the strategy of constructing CeO_(2) coatings on the surface and interfacial spinel-like phases improves the Li+diffusion kinetics and interfacial stability.Simultaneously,part of the strongly oxidizing four-valence Ce^(4+)diffuses to the surface layer,further increasing the average valence state of Ni.Therefore,LiNi_(0.83)Co_(0.11)Mn_(0.06)O_(2)(NCM)-Zr@Ce achieves 78.5%outstanding retention at1.0C after 200 cycles within 3.0-4.3 V compared to unmodified NCM with 41.4%retention.The improved cyclic stability can be attributed to the collaborative modification strategy of the quadrivalent elements,which provides an effective synergistic modification strategy for developing high-performance Li-ion battery cathode materials.展开更多
In 2018,an intergovernmental climate-change panel concluded that,to maintain a global temperature increases of<1.5℃,net-zero greenhouse-gas emissions would be required by 2050.Since then,>110 countries have ple...In 2018,an intergovernmental climate-change panel concluded that,to maintain a global temperature increases of<1.5℃,net-zero greenhouse-gas emissions would be required by 2050.Since then,>110 countries have pledged net-zero carbon ambitions by 2050 and hydrogen has been identified at national levels as key to achieving this.Governments have pledged>US$70 billion to further advance hydrogen infrastructure and technology,with an additional investigation on>200 proposed hydrogen-based projects expecting completion before 2030,totalling a value of US$300 billion.Reaching these aggressive targets will require a disciplined cohesion of collaborative strategies to develop an integrated macro infrastructure system.This article discusses the current infancy of the hydrogen market,introduces and defines a new‘collaborative emergent strategy’based on the emergent strategy concept by Mintzberg and Waters,and links its developmental viability through a staged micro-meso-macro architecture.Successful strategic business case studies and current market opportunities across multiple industries are reviewed as they all vie for a strategic early market position.展开更多
基金supported by the Shaanxi Key R&D Program Project(2021GY-100).
文摘With the rapid development of the Industrial Internet of Things(IIoT),the traditional centralized cloud processing model has encountered the challenges of high communication latency and high energy consumption in handling industrial big data tasks.This paper aims to propose a low-latency and lowenergy path computing scheme for the above problems.This scheme is based on the cloud-fog network architecture.The computing resources of fog network devices in the fog computing layer are used to complete task processing step by step during the data interaction from industrial field devices to the cloud center.A collaborative scheduling strategy based on the particle diversity discrete binary particle swarm optimization(PDBPSO)algorithm is proposed to deploy manufacturing tasks to the fog computing layer reasonably.The task in the form of a directed acyclic graph(DAG)is mapped to a factory fog network in the form of an undirected graph(UG)to find the appropriate computing path for the task,significantly reducing the task processing latency under energy consumption constraints.Simulation experiments show that this scheme’s latency performance outperforms the strategy that tasks are wholly offloaded to the cloud and the strategy that tasks are entirely offloaded to the edge equipment.
基金financially supported by the Department of Science and Technology of Guangxi Province (Nos.2022JBGS004,AB21220027,AD19110090 and AD19110077)the National Natural Science Foundation of China (Nos.21805055 and12172096)+2 种基金Guangxi Natural Science Foundation (Nos.2020GXNSFAA159059 and 2020GXNSFAA159037)Guangxi Key Laboratory of Manufacturing Systems Foundation (No.20-065-40-005Z)the Engineering Research Center Foundation of Electronic Information Materials and Devices (No.EIMD-AA202005)。
文摘Ni-rich layered oxides(Ni>80%)with high energy density have become a mainstream cathode material for Li-ion batteries.However,irreversible phase transitions and interface instability are deep-seated challenges in commercializing Ni-rich materials.This study used a collaborative modification strategy involving doping and coating with quadrivalent elements to construct Ni-rich materials.In particular,introducing tetravalent Zr makes the valence change of Ni(2+to 4+)more accessible to complete spontaneously during the charging and discharging processes,which significantly suppresses the cationic mixing and irreversible phase transition(H2?H3).Combining the strategy of constructing CeO_(2) coatings on the surface and interfacial spinel-like phases improves the Li+diffusion kinetics and interfacial stability.Simultaneously,part of the strongly oxidizing four-valence Ce^(4+)diffuses to the surface layer,further increasing the average valence state of Ni.Therefore,LiNi_(0.83)Co_(0.11)Mn_(0.06)O_(2)(NCM)-Zr@Ce achieves 78.5%outstanding retention at1.0C after 200 cycles within 3.0-4.3 V compared to unmodified NCM with 41.4%retention.The improved cyclic stability can be attributed to the collaborative modification strategy of the quadrivalent elements,which provides an effective synergistic modification strategy for developing high-performance Li-ion battery cathode materials.
文摘In 2018,an intergovernmental climate-change panel concluded that,to maintain a global temperature increases of<1.5℃,net-zero greenhouse-gas emissions would be required by 2050.Since then,>110 countries have pledged net-zero carbon ambitions by 2050 and hydrogen has been identified at national levels as key to achieving this.Governments have pledged>US$70 billion to further advance hydrogen infrastructure and technology,with an additional investigation on>200 proposed hydrogen-based projects expecting completion before 2030,totalling a value of US$300 billion.Reaching these aggressive targets will require a disciplined cohesion of collaborative strategies to develop an integrated macro infrastructure system.This article discusses the current infancy of the hydrogen market,introduces and defines a new‘collaborative emergent strategy’based on the emergent strategy concept by Mintzberg and Waters,and links its developmental viability through a staged micro-meso-macro architecture.Successful strategic business case studies and current market opportunities across multiple industries are reviewed as they all vie for a strategic early market position.
