Elevated intraocular pressure(IOP)is a major risk factor for the development or progression of glaucoma.Lowering IOP is the only proven therapeutic approach to the management of glaucoma.IOP can be lowered by medicati...Elevated intraocular pressure(IOP)is a major risk factor for the development or progression of glaucoma.Lowering IOP is the only proven therapeutic approach to the management of glaucoma.IOP can be lowered by medication,laser treatment or surgery(1).Generally,instillation of IOP-展开更多
随着智慧水利建设的推进,水利水电高边坡工程面临着信息反馈滞后、现场监控不足、施工质量控制不到位等状况。基于这些问题,提出了一种结合建筑信息模型(building information modeling,BIM)、有限元分析与混合现实(mixed reality,MR)...随着智慧水利建设的推进,水利水电高边坡工程面临着信息反馈滞后、现场监控不足、施工质量控制不到位等状况。基于这些问题,提出了一种结合建筑信息模型(building information modeling,BIM)、有限元分析与混合现实(mixed reality,MR)的数字化解决方案。基于MicroStation软件,通过钻孔数据创建BIM模型,导入ABAQUS进行三维地应力平衡以及二维边坡降雨入渗分析,通过部署现场监测系统,结合进行二次开发,将分析结果和监测数据反馈至MicroStation中,实现了数值计算结果与BIM环境的互通;同时将BIM模型导入Unity3D平台中,并借助HoloLens2头戴式MR设备,将虚拟的三维模型、分析结果和监测数据与现实环境叠加,实现了工程现场的可视化和交互式分析。通过迈湾水利枢纽工程的案例,展示了该技术的实际应用效果,有效提升了水利水电高边坡工程的数字化管理水平和安全保障能力。这些技术的融合不仅促进了信息模型在实际工程中的优化和协同,还为工程安全性、可靠性和效率性提供了新的支持和解决方案。展开更多
The Kuramoto model is one of the most profound and classical models of coupled phase oscillators.Because of the global couplings between oscillators,its precise critical exponents can be obtained using the mean-field ...The Kuramoto model is one of the most profound and classical models of coupled phase oscillators.Because of the global couplings between oscillators,its precise critical exponents can be obtained using the mean-field approximation(MFA),where the time average of the modulus of the mean-field is defined as the order parameter.Here,we further study the phase fluctuations of oscillators from the mean-field using the eigen microstate theory(EMT),which was recently developed.The synchronization of phase fluctuations is identified by the condensation and criticality of eigen microstates with finite eigenvalues,which follow the finite-size scaling with the same critical exponents as those of the MFA in the critical regime.Then,we obtain the complete critical behaviors of phase oscillators in the Kuramoto model.We anticipate that the critical behaviors of general phase oscillators can be investigated by using the EMT and different critical exponents from those of the MFA will be obtained.展开更多
We propose an eigen microstate approach(EMA)for analyzing quantum phase transitions in quantum many-body systems,introducing a novel framework that does not require prior knowledge of an order parameter.Using the tran...We propose an eigen microstate approach(EMA)for analyzing quantum phase transitions in quantum many-body systems,introducing a novel framework that does not require prior knowledge of an order parameter.Using the transversefield Ising model(TFIM)as a case study,we demonstrate the effectiveness of EMA by identifying key features of the phase transition through the scaling behavior of eigenvalues and the structure of associated eigen microstates.Our results reveal substantial changes in the ground state of the TFIM as it undergoes a phase transition,as reflected in the behavior of specific componentsξ_(i)^((k))within the eigen microstates.This method is expected to be applicable to other quantum systems where predefining an order parameter is challenging.展开更多
文摘Elevated intraocular pressure(IOP)is a major risk factor for the development or progression of glaucoma.Lowering IOP is the only proven therapeutic approach to the management of glaucoma.IOP can be lowered by medication,laser treatment or surgery(1).Generally,instillation of IOP-
文摘随着智慧水利建设的推进,水利水电高边坡工程面临着信息反馈滞后、现场监控不足、施工质量控制不到位等状况。基于这些问题,提出了一种结合建筑信息模型(building information modeling,BIM)、有限元分析与混合现实(mixed reality,MR)的数字化解决方案。基于MicroStation软件,通过钻孔数据创建BIM模型,导入ABAQUS进行三维地应力平衡以及二维边坡降雨入渗分析,通过部署现场监测系统,结合进行二次开发,将分析结果和监测数据反馈至MicroStation中,实现了数值计算结果与BIM环境的互通;同时将BIM模型导入Unity3D平台中,并借助HoloLens2头戴式MR设备,将虚拟的三维模型、分析结果和监测数据与现实环境叠加,实现了工程现场的可视化和交互式分析。通过迈湾水利枢纽工程的案例,展示了该技术的实际应用效果,有效提升了水利水电高边坡工程的数字化管理水平和安全保障能力。这些技术的融合不仅促进了信息模型在实际工程中的优化和协同,还为工程安全性、可靠性和效率性提供了新的支持和解决方案。
基金supported by the National Natural Science Foundation of China(Grant Nos.12135003,71731002,and 12471141)the Postdoctoral Fellowship Program of CPSF(Grant No.GZC20231179)+1 种基金the China Postdoctoral Science Foundation-Tianjin Joint Support Program(Grant No.2023T001TJ)the Tianjin Education Commission scientific Research Project(Grant No.2023SK070)。
文摘The Kuramoto model is one of the most profound and classical models of coupled phase oscillators.Because of the global couplings between oscillators,its precise critical exponents can be obtained using the mean-field approximation(MFA),where the time average of the modulus of the mean-field is defined as the order parameter.Here,we further study the phase fluctuations of oscillators from the mean-field using the eigen microstate theory(EMT),which was recently developed.The synchronization of phase fluctuations is identified by the condensation and criticality of eigen microstates with finite eigenvalues,which follow the finite-size scaling with the same critical exponents as those of the MFA in the critical regime.Then,we obtain the complete critical behaviors of phase oscillators in the Kuramoto model.We anticipate that the critical behaviors of general phase oscillators can be investigated by using the EMT and different critical exponents from those of the MFA will be obtained.
基金supported by the National Natural Science Foundation of China(Grant Nos.12475033,12135003,12174194,and 12405032)the National Key Research and Development Program of China(Grant No.2023YFE0109000)+1 种基金supported by the Fundamental Research Funds for the Central Universitiessupport from the China Postdoctoral Science Foundation(Grant No.2023M730299).
文摘We propose an eigen microstate approach(EMA)for analyzing quantum phase transitions in quantum many-body systems,introducing a novel framework that does not require prior knowledge of an order parameter.Using the transversefield Ising model(TFIM)as a case study,we demonstrate the effectiveness of EMA by identifying key features of the phase transition through the scaling behavior of eigenvalues and the structure of associated eigen microstates.Our results reveal substantial changes in the ground state of the TFIM as it undergoes a phase transition,as reflected in the behavior of specific componentsξ_(i)^((k))within the eigen microstates.This method is expected to be applicable to other quantum systems where predefining an order parameter is challenging.
