In recent years,there has been an intensifying focus within the soil contamination prevention and remediation sector,both domestically and internationally,on the off-site disposal of contaminated soils.The United Stat...In recent years,there has been an intensifying focus within the soil contamination prevention and remediation sector,both domestically and internationally,on the off-site disposal of contaminated soils.The United States and Japan,as pioneers in this field,have formulated and implemented a suite of policy standards and practical measures for the regional collaborative management of off-site soil disposal.This paper meticulously reviews and evaluates the existing research on the regional collaborative management of off-site soil disposal,analyzing the experiences and strategies of the United States and Japan from the perspectives of regulatory systems and practical implementation.In light of China’s specific circumstances,it proposes a series of strategic recommendations for the adaptation of these international experiences to the Chinese context.These include enhancement of Chinese legal standards for the regional collaborative management of contaminated land soil off-site disposal,improvement of risk control standards for soil pollution and specific regulations for off-site disposal,as well as delineation of objective criteria to define the scope of collaborative management.展开更多
The Bose-Hubbard model with an effective off-site three-body tunneling,characterized by jumps towards one another,between one atom on a site and a pair atoms on the neighborhood site,is studied systematically on a one...The Bose-Hubbard model with an effective off-site three-body tunneling,characterized by jumps towards one another,between one atom on a site and a pair atoms on the neighborhood site,is studied systematically on a one-dimensional（1D） lattice,by using the density matrix renormalization group method.The off-site trimer superfluid,condensing at momentum k = 0,emerges in the softcore Bose-Hubbard model but it disappears in the hardcore Bose-Hubbard model.Our results numerically verify that the off-site trimer superfluid phase derived in the momentum space from[Phys.Rev.A81,011601（R）（2010）]is stable in the thermodynamic limit.The off-site trimer superfluid phase,the partially off-site trimer superfluid phase and the Mott insulator phase are found,as well as interesting phase transitions,such as the continuous or first-order phase transition from the trimer superfluid phase to the Mott insulator phase.Our results are helpful in realizing this novel off-site trimer superfluid phase by cold atom experiments.展开更多
Regarding the current difficulties in SME(small and medium enterprise)supervision,especially considering the problem that the emission reduction task cannot be effectively implemented under the off-site daily supervis...Regarding the current difficulties in SME(small and medium enterprise)supervision,especially considering the problem that the emission reduction task cannot be effectively implemented under the off-site daily supervision and the new normal of epidemic prevention with control of heavily polluted weather,a new type of intelligent power management technology has been proposed.Power information collection equipment and intelligent data collection and transmission terminal are installed to collect power consumption information of enterprise production facilities and pollution control facilities,and their operating conditions are monitored in 24 h.Abnormal operation alarm and closed-loop disposal management are provided through the software platform.The practical application of power monitoring technology in Rizhao City proves that the system alarms accurately and monitors efficiently.On the one hand,it has improved the efficiency of daily supervision of the ecological environment department,and can accurately investigate and correct corporate pollution control violations.On the other hand,it has enriched environmental supervision methods to accurately control the implementation of emergency emission reduction measures.The application of this technology has realized the transformation from civil defense to technical defense,from random law enforcement to precise law enforcement,and from on-site law enforcement to off-site law enforcement in the supervision of polluting enterprises in the jurisdiction,creating a new mode of off-site law enforcement for enterprises.展开更多
This study explores viable pathways for establishing biomedical proof-of-concept(POC)centers via university-affiliated,off-campus research institutions,with the specific aim of overcoming the persistent“valley of de...This study explores viable pathways for establishing biomedical proof-of-concept(POC)centers via university-affiliated,off-campus research institutions,with the specific aim of overcoming the persistent“valley of death”in biomedical technology translation.By integrating a systematic literature review with in-depth case analyses,the study delineates critical structural and institutional bottlenecks that impede the progression of biomedical discoveries from laboratory research to clinical and industrial application,while highlighting the comparative advantages of off-campus research entities as flexible and translationally oriented platforms.Building on these insights,we propose a four-dimensional functional framework encompassing technology evaluation,targeted financial support,experimental validation,and commercialization facilitation,supported by a market-oriented operational model grounded in risk-sharing mechanisms.Collectively,this integrated model promotes more effective linkage between academic innovation and industrial deployment through coordinated engagement of multiple stakeholders and policy instruments,offering both conceptual contributions and an actionable framework to enhance the efficiency of biomedical technology transfer within Chinese universities.展开更多
On-site maintenance(ONSM) is critical to ensuring the safety of equipment in the petrochemical industry. However, many accidents occur during ONSM processes because of unstable equipment, complicated work environment,...On-site maintenance(ONSM) is critical to ensuring the safety of equipment in the petrochemical industry. However, many accidents occur during ONSM processes because of unstable equipment, complicated work environment, and human error. To reduce congestion and exposure to hazards during on-site operations and thereby reduce the probability of accidents, off-site maintenance(OFSM) is proposed based on Energy Release Theory(ERT). The information requirements for OFSM are analyzed. A support system for OFSM, which makes use of visualization, information management, and localization capabilities, is developed. A case study utilizing OFSM and its support system for an oil-loading facility of a petrochemical company is conducted. The application results indicated that implementation of OFSM system can significantly reduce the operation risks and can improve the operation efficiency.展开更多
Off-site construction(OSC)involves the fabrication and assembly of building com-ponents in a purpose-built factory which are then transported to the job site for final installation.OSC has proven to be a greener const...Off-site construction(OSC)involves the fabrication and assembly of building com-ponents in a purpose-built factory which are then transported to the job site for final installation.OSC has proven to be a greener construction approach,spurring research towards benchmarking the sustainable attributes of the technique.However,a quantitative statistical analysis of studies on OSC sustainability and a framework of the knowledge domain are not well-established.Drawing on 642 bibliographic records from Scopus,this paper conducted a bibliometric and visualized analysis of research on the sustainability of OSC from 1971 to 2019.The findings show that research publications on OSC sustainability only witnessed steady growth since 2000.A geospatial analysis revealed that at least 32%of countries are involved in the OSC sustainability research,of which the United States,China,Australia,the United Kingdom,and Canada make the greatest contributions.The hot topics in the contemporary OSC sustainability research were identified as embodied carbon,embodied energy,construction waste,post-occupancy evaluation,resources conserva-tion,and recycling,and cost savings.The paper identified areas that require further research.Thus,the paper offers an all-embracing understanding of the core research themes,trends,and patterns on OSC sustainability to stakeholders.展开更多
To address the severe challenges of PM_(2.5) and ozone co-control during the"14^(th) Five-Year Plan"period and to enhance the precision and intelligence level of air environment governance,it is imperative t...To address the severe challenges of PM_(2.5) and ozone co-control during the"14^(th) Five-Year Plan"period and to enhance the precision and intelligence level of air environment governance,it is imperative to build an efficient comprehensive management platform for regional air quality.In this paper,the specific practice in Zibo City,Shandong Province is as an example to systematically analyze the top-level design,technical implementation,and innovative application of a comprehensive management platform for regional air quality integrating"perception monitoring,data fusion,research judgment of early warnings,analysis of sources,collaborative dispatching,and evaluation assessment".Through the construction of an"sky-air-ground"integrated three-dimensional monitoring network,the platform integrates multi-source heterogeneous environmental data,and employs big data,cloud computing,artificial intelligence,CALPUFF/CMAQ,and other numerical model technologies to achieve comprehensive perception,precise prediction,intelligent source tracing,and closed-loop management of air pollution.The platform innovatively establishes a full-process closed-loop management mechanism of"data-early warning-disposition-evaluation",and achieves a fundamental transformation from passive response to active anticipation and from experience-based judgment to data driving in environmental supervision.The application results show that this platform significantly improves the scientific decision-making ability and collaborative execution efficiency of air pollution governance in Zibo City,providing a replicable and scalable comprehensive solution for similar industrial cities to achieve the continuous improvement of air quality.展开更多
针对超载带来的道路损坏和安全隐患,提出了基于传感特征融合的公路治超非现场执法动态称重方法。采用聚偏氟乙烯(polyvinylidene fluoride,PVDF)压电薄膜轴传感器作为称重传感器,配置四个PVDF传感器,根据汽车的振动频率实施传感器间隔...针对超载带来的道路损坏和安全隐患,提出了基于传感特征融合的公路治超非现场执法动态称重方法。采用聚偏氟乙烯(polyvinylidene fluoride,PVDF)压电薄膜轴传感器作为称重传感器,配置四个PVDF传感器,根据汽车的振动频率实施传感器间隔设置。通过数据采集卡将PVDF输出的模拟信号转化为数字信号,利用数据通信线实时传输至上位机。拟单目标势概率假设密度滤波器(quasi-single-target cardinalized probability hypothesis density filter,QSTCPHD)滤波算法经改进,适用于多传感器场景,有效融合多个测量值。设计Elman反馈型神经网络模型,实现公路治超非现场执法动态称重。测试结果表明,设计方法对多种车型在不同速度下的动态称重置信度均超过0.95,表现出很高的鲁棒性,提高了交通管理效率。展开更多
基金supported by the National Social Science Foundation of China(Grant No.20&ZD091)the National Social Science Fund on the Spirit of the Sixth Plenary Session of the 19th Central Committee of the Communist Party of China(Grant No.22ZDA109)+1 种基金the 2024 Innovative Talents International Cooperation Training Program of the China Scholarship Council(Grant No.202406720002)the the 2024 Hunan Provincial Education Department Graduate Innovation Research Project(Grant No.CX20240485).
文摘In recent years,there has been an intensifying focus within the soil contamination prevention and remediation sector,both domestically and internationally,on the off-site disposal of contaminated soils.The United States and Japan,as pioneers in this field,have formulated and implemented a suite of policy standards and practical measures for the regional collaborative management of off-site soil disposal.This paper meticulously reviews and evaluates the existing research on the regional collaborative management of off-site soil disposal,analyzing the experiences and strategies of the United States and Japan from the perspectives of regulatory systems and practical implementation.In light of China’s specific circumstances,it proposes a series of strategic recommendations for the adaptation of these international experiences to the Chinese context.These include enhancement of Chinese legal standards for the regional collaborative management of contaminated land soil off-site disposal,improvement of risk control standards for soil pollution and specific regulations for off-site disposal,as well as delineation of objective criteria to define the scope of collaborative management.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11305113)the Project GDW201400042 for the“High End Foreign Experts Program”
文摘The Bose-Hubbard model with an effective off-site three-body tunneling,characterized by jumps towards one another,between one atom on a site and a pair atoms on the neighborhood site,is studied systematically on a one-dimensional（1D） lattice,by using the density matrix renormalization group method.The off-site trimer superfluid,condensing at momentum k = 0,emerges in the softcore Bose-Hubbard model but it disappears in the hardcore Bose-Hubbard model.Our results numerically verify that the off-site trimer superfluid phase derived in the momentum space from[Phys.Rev.A81,011601（R）（2010）]is stable in the thermodynamic limit.The off-site trimer superfluid phase,the partially off-site trimer superfluid phase and the Mott insulator phase are found,as well as interesting phase transitions,such as the continuous or first-order phase transition from the trimer superfluid phase to the Mott insulator phase.Our results are helpful in realizing this novel off-site trimer superfluid phase by cold atom experiments.
文摘Regarding the current difficulties in SME(small and medium enterprise)supervision,especially considering the problem that the emission reduction task cannot be effectively implemented under the off-site daily supervision and the new normal of epidemic prevention with control of heavily polluted weather,a new type of intelligent power management technology has been proposed.Power information collection equipment and intelligent data collection and transmission terminal are installed to collect power consumption information of enterprise production facilities and pollution control facilities,and their operating conditions are monitored in 24 h.Abnormal operation alarm and closed-loop disposal management are provided through the software platform.The practical application of power monitoring technology in Rizhao City proves that the system alarms accurately and monitors efficiently.On the one hand,it has improved the efficiency of daily supervision of the ecological environment department,and can accurately investigate and correct corporate pollution control violations.On the other hand,it has enriched environmental supervision methods to accurately control the implementation of emergency emission reduction measures.The application of this technology has realized the transformation from civil defense to technical defense,from random law enforcement to precise law enforcement,and from on-site law enforcement to off-site law enforcement in the supervision of polluting enterprises in the jurisdiction,creating a new mode of off-site law enforcement for enterprises.
基金The Management Research Project on the Transformation of Scientific and Technological Achievements at Peking University Health Science Center(Grant No.KT202501)the 2025 General Research Project on Party Building of Peking University Health Science Center(No.2).
文摘This study explores viable pathways for establishing biomedical proof-of-concept(POC)centers via university-affiliated,off-campus research institutions,with the specific aim of overcoming the persistent“valley of death”in biomedical technology translation.By integrating a systematic literature review with in-depth case analyses,the study delineates critical structural and institutional bottlenecks that impede the progression of biomedical discoveries from laboratory research to clinical and industrial application,while highlighting the comparative advantages of off-campus research entities as flexible and translationally oriented platforms.Building on these insights,we propose a four-dimensional functional framework encompassing technology evaluation,targeted financial support,experimental validation,and commercialization facilitation,supported by a market-oriented operational model grounded in risk-sharing mechanisms.Collectively,this integrated model promotes more effective linkage between academic innovation and industrial deployment through coordinated engagement of multiple stakeholders and policy instruments,offering both conceptual contributions and an actionable framework to enhance the efficiency of biomedical technology transfer within Chinese universities.
文摘On-site maintenance(ONSM) is critical to ensuring the safety of equipment in the petrochemical industry. However, many accidents occur during ONSM processes because of unstable equipment, complicated work environment, and human error. To reduce congestion and exposure to hazards during on-site operations and thereby reduce the probability of accidents, off-site maintenance(OFSM) is proposed based on Energy Release Theory(ERT). The information requirements for OFSM are analyzed. A support system for OFSM, which makes use of visualization, information management, and localization capabilities, is developed. A case study utilizing OFSM and its support system for an oil-loading facility of a petrochemical company is conducted. The application results indicated that implementation of OFSM system can significantly reduce the operation risks and can improve the operation efficiency.
基金the Department of Building and Real Estate of the Hong Kong Polytechnic University under the auspices of the Research Grants Council of the Hong Kong Special Administrative Region(PF17-00649).
文摘Off-site construction(OSC)involves the fabrication and assembly of building com-ponents in a purpose-built factory which are then transported to the job site for final installation.OSC has proven to be a greener construction approach,spurring research towards benchmarking the sustainable attributes of the technique.However,a quantitative statistical analysis of studies on OSC sustainability and a framework of the knowledge domain are not well-established.Drawing on 642 bibliographic records from Scopus,this paper conducted a bibliometric and visualized analysis of research on the sustainability of OSC from 1971 to 2019.The findings show that research publications on OSC sustainability only witnessed steady growth since 2000.A geospatial analysis revealed that at least 32%of countries are involved in the OSC sustainability research,of which the United States,China,Australia,the United Kingdom,and Canada make the greatest contributions.The hot topics in the contemporary OSC sustainability research were identified as embodied carbon,embodied energy,construction waste,post-occupancy evaluation,resources conserva-tion,and recycling,and cost savings.The paper identified areas that require further research.Thus,the paper offers an all-embracing understanding of the core research themes,trends,and patterns on OSC sustainability to stakeholders.
文摘To address the severe challenges of PM_(2.5) and ozone co-control during the"14^(th) Five-Year Plan"period and to enhance the precision and intelligence level of air environment governance,it is imperative to build an efficient comprehensive management platform for regional air quality.In this paper,the specific practice in Zibo City,Shandong Province is as an example to systematically analyze the top-level design,technical implementation,and innovative application of a comprehensive management platform for regional air quality integrating"perception monitoring,data fusion,research judgment of early warnings,analysis of sources,collaborative dispatching,and evaluation assessment".Through the construction of an"sky-air-ground"integrated three-dimensional monitoring network,the platform integrates multi-source heterogeneous environmental data,and employs big data,cloud computing,artificial intelligence,CALPUFF/CMAQ,and other numerical model technologies to achieve comprehensive perception,precise prediction,intelligent source tracing,and closed-loop management of air pollution.The platform innovatively establishes a full-process closed-loop management mechanism of"data-early warning-disposition-evaluation",and achieves a fundamental transformation from passive response to active anticipation and from experience-based judgment to data driving in environmental supervision.The application results show that this platform significantly improves the scientific decision-making ability and collaborative execution efficiency of air pollution governance in Zibo City,providing a replicable and scalable comprehensive solution for similar industrial cities to achieve the continuous improvement of air quality.
文摘针对超载带来的道路损坏和安全隐患,提出了基于传感特征融合的公路治超非现场执法动态称重方法。采用聚偏氟乙烯(polyvinylidene fluoride,PVDF)压电薄膜轴传感器作为称重传感器,配置四个PVDF传感器,根据汽车的振动频率实施传感器间隔设置。通过数据采集卡将PVDF输出的模拟信号转化为数字信号,利用数据通信线实时传输至上位机。拟单目标势概率假设密度滤波器(quasi-single-target cardinalized probability hypothesis density filter,QSTCPHD)滤波算法经改进,适用于多传感器场景,有效融合多个测量值。设计Elman反馈型神经网络模型,实现公路治超非现场执法动态称重。测试结果表明,设计方法对多种车型在不同速度下的动态称重置信度均超过0.95,表现出很高的鲁棒性,提高了交通管理效率。
