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Uniform Large Deviations for Stochastic Generalized Burgers-Huxley Equation Driven by Multiplicative Noise 认领 引用
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作者 Hui GUO Xi-liang LI Jin MA 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2026年第3期746-765,共20页
In this paper,we establish a Freidlin-Wentzell type large deviation principle uniformly with respect to initial condition in bounded subsets,that do not necessarily belongs to compact sets,of an infinite dimensional B... In this paper,we establish a Freidlin-Wentzell type large deviation principle uniformly with respect to initial condition in bounded subsets,that do not necessarily belongs to compact sets,of an infinite dimensional Banach space for stochastic 1D generalized Burgers-Huxley equation driven by multiplicative small noise.The proof is based on the weak convergence approach obtained by[Salins,Budhiraja and Dupuis;Trans.Amer.Math.Soc.,2019]. 展开更多
关键词 stochastic generalized Burgers-Huxley equation large deviation principle uniform large deviation principle weak convergence approach
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DEVIATION PROBABILITIES FOR SPECTRAL RADIUS OF PRODUCTS OF COMPLEX GINIBRE ENSEMBLES 认领 引用
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作者 Yutao MA Chaoyang SONG 《Acta Mathematica Scientia》 SCIE CSCD 2026年第2期937-956,共20页
Let X1,…,Xm_(n)be independent n×n complex Ginibre ensembles and Z1,…,Znbe the eigenvalues of Пmnj=1Xj.Suppose limn→∞mn=+∞,we obtain large and moderate deviations for max1≤i≤n... Let X1,…,Xm_(n)be independent n×n complex Ginibre ensembles and Z1,…,Znbe the eigenvalues of Пmnj=1Xj.Suppose limn→∞mn=+∞,we obtain large and moderate deviations for max1≤i≤nlog|Zi|. 展开更多
关键词 products of complex Ginibre ensembles spectral radius large deviations moderate deviations
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Optimization of long-hole raise blasting considering drilling deviations:Theoretical and numerical approaches 认领 引用
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作者 Xianyang Qiu Wenbo Shen +4 位作者 Rihong Cao Xiuzhi Shi Yongsheng Xie Wei Liu Zhigang Tian 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第7期5380-5395,共16页
Long-hole raise blasting(LHRB)is a highly efficientexcavation method that is used extensively in underground mining and civil engineering.However,deviations in drilling are usually not accounted for in LHRB,which may ... Long-hole raise blasting(LHRB)is a highly efficientexcavation method that is used extensively in underground mining and civil engineering.However,deviations in drilling are usually not accounted for in LHRB,which may adversely affect the efficiencyand progress of raise excavation.In this paper,the effect of drilling deviation on the optimization of LHRB is investigated.The actual trajectories of the blastholes were measured,and the deviation rates between different diameters were compared.The effects of the drilling deviation on the burn-cut blasting mode(BCBM)and spherical cartridge blasting mode(SCBM)of LHRB were theoretically analyzed.Numerical models with vertical holes that consider the actual hole location at different positions of the raise were subsequently developed to simulate the raise blasting damage.The results indicated that the BCBM relied substantially on the drilling accuracy to provide free surface and compensation space for further blasting,whereas the requirements of drilling deviation for the SCBM were less strict.With increasing hole deviation in the BCBM,the height of the failure area of the raise blasting increased.Optimization designs that combine the BCBM and SCBM were proposed to strike a balance between the efficiencyand reliability of LHRB.A 40 m high slot raise in a large-diameter long-hole(LDL)stope was successfully formed by multimode LHRB.The fieldtest results reveal that the optimization of LHRB is feasible in practical engineering. 展开更多
关键词 Long-hole raise blasting(LHRB) Drilling deviation Blasting optimization Numerical simulation Field test
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An explainable deep learning approach to enhance the prediction of shield tunnel deviation 认领 引用
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作者 Jiajie Zhen Fengwen Lai +4 位作者 Ming Huang Junjie Zheng Jim S.Shiau Ping Wang Jinhuo Zheng 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第1期566-579,共14页
Although machine learning models have achieved high enough accuracy in predicting shield position deviations,their“black box”nature makes the prediction mechanisms and decision-making processes opaque,leading to wea... Although machine learning models have achieved high enough accuracy in predicting shield position deviations,their“black box”nature makes the prediction mechanisms and decision-making processes opaque,leading to weaker explanations and practicability.This study introduces a novel explainable deep learning framework comprising the Informer model with enhanced attention mechanisms(EAMInfor)and deep learning important features(DeepLIFT),aimed at improving the prediction accuracy of shield position deviations and providing interpretability for predictive results.The EAMInfor model attempts to integrate channel attention,spatial attention,and simple attention modules to improve the Informer model's performance.The framework is tested with the four different geological conditions datasets generated from the Xiamen metro line 3,China.Results show that the EAMInfor model outperforms the traditional Informer and comparison models.The analysis with the DeepLIFT method indicates that the push thrust of push cylinder and the earth chamber pressure are the most significant features,while the stroke length of the push cylinder demonstrated lower importance.Furthermore,the variation trends in the significance of data points within input sequences exhibit substantial differences between single and composite strata.This framework not only improves predictive accuracy but also strengthens the credibility and reliability of the results. 展开更多
关键词 Shield tunnel position deviation Machine learning Explainable AI Deep learning important features
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On Petrenko's Deviations and Complex Difference Equations 认领 引用
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作者 Lipeng XIAO Chunfang CHEN 《Journal of Mathematical Research with Applications》 CSCD 2026年第2期209-221,共13页
In this paper,the growth characteristic of meromorphic solutions for the following difference equation An(z)f(z+n)+…+A1(z)f(z+1)+A0(z)f(z)=0 with no dominating coefficient is studied.By imposing certain restriction o... In this paper,the growth characteristic of meromorphic solutions for the following difference equation An(z)f(z+n)+…+A1(z)f(z+1)+A0(z)f(z)=0 with no dominating coefficient is studied.By imposing certain restriction on the entire coefficients associated with Petrenko's deviation of the above equation,we obtain some results and partially address a question posed byⅠ.Laine and C.C.Yang.Furthermore,for the entire solutions f(z)of the difference equation An(z)f(z+n)+…+A1(z)f(z+1)+A0(z)f(z)=F(z),where Aj(z)(j=0,…,n),F(z)are entire functions,we discover a close relationship between the measure of common transcendental directions associated with classical difference operators of f(z)and Petrenko's deviations of the coefficients. 展开更多
关键词 complex difference equation difference operator Petrenko’s deviation transcenden-tal direction
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A novel deviation measurement for scheduled intelligent transportation system via comparative spatial-temporal path networks 认领 引用
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作者 Daozhong Feng Jiajian Lai +1 位作者 Wenxuan Wei Bin Hao 《Digital Communications and Networks》 SCIE EI CSCD 2026年第1期101-118,共18页
Transit managers can use Intelligent Transportation System technologies to access large amounts of data to monitor network status.However,the presentation of the data lacks structural information.Existing single-netwo... Transit managers can use Intelligent Transportation System technologies to access large amounts of data to monitor network status.However,the presentation of the data lacks structural information.Existing single-network description technologies are ineffective in representing the temporal and spatial characteristics simultaneously.Therefore,there is a need for complementary methods to address these deficiencies.To address these limitations,this paper proposes an approach that combines Network Snapshots and Temporal Paths for the scheduled system.A dual information network is constructed to assess the degree of operational deviation considering the planning tasks.To validate the effectiveness,discussions are conducted through a modified cosine similarity calculation on theoretical analysis,delay level description,and the ability to identify abnormal dates.Compared to some state-of-the-art methods,the proposed method achieves an average Spearman delay correlation of 0.847 and a relative distance of 3.477.Furthermore,case analyses are invested in regions of China's Mainland,Europe,and the United States,investigating both the overall and sub-regional network fluctuations.To represent the impact of network fluctuations in sub-regions,a response loss value was developed.The times that are prone to fluctuations are also discussed through the classification of time series data.The research can offer a novel approach to system monitoring,providing a research direction that utilizes individual data combined to represent macroscopic states.Our code will be released at http://gffzz188fe103f8f1460asvnffc6xff0bp65wk.ffgz.tsg.suse.edu.cn/daozhong/STPN.git. 展开更多
关键词 Intelligent transportation system Air traffic network Deviation measurement Spatial-temporal path networks Operational monitoring
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High‑Fidelity Reconstruction of Approach Deviations:Integrating QAR Flight Data with ILS Electromagnetic Signal Physics 认领 引用
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作者 LIU Jiming GAO Zhenxing LI Yue 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2026年第2期187-202,共16页
Precise detection of flight path deviations during the approach phase is critical for identifying operational risks and enhancing aviation safety.However,existing monitoring methods often face significant challenges i... Precise detection of flight path deviations during the approach phase is critical for identifying operational risks and enhancing aviation safety.However,existing monitoring methods often face significant challenges in distinguishing between environmental signal distortions and operational handling errors due to the lack of high-fidelity physical reference models.To address these limitations,this study establishes an integrated simulation framework for required navigation performance(RNP)and instrument landing system(ILS)approaches by synthesizing quick access recorder(QAR)data with rigorous navigation modeling.A site-specific“digital twin”of Linfen Yaodu Airport is constructed,incorporating 3D trajectory reconstruction based on Mercator projection and Baro-VNAV logic,alongside an electromagnetic simulation of ILS signals utilizing antenna array and image theory to model multipath effects.Empirical validation demonstrates that the model accurately reproduces critical signal characteristics,including interference fringes and secondary glide slope lobes.Furthermore,quantitative regression analysis establishes a definitive linear correlation(R2>0.98)between the theoretical difference in depth of modulation(DDM)and the pilot-observed distance off track(DOT),providing a verified calibration equation for interpreting cockpit indications.The practical utility of the framework is substantiated through the investigation of a specific vertical deviation anomaly,where the model successfully traces the causal chain from signal distortion to unsafe landing parameters such as threshold height exceedance and flare compression.This research offers a robust,data-driven methodology for continuous flight quality monitoring and provides a scientific foundation for identifying the root causes of navigation incidents. 展开更多
关键词 flight deviation detection flight quality monitoring RNP approach procedure instrument landing system(ILS)
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HAGNet:a hybrid data-model driven frameworks for machinery fault diagnosis under domain deviation 认领 引用
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作者 Li Jin Lin Zesheng +2 位作者 Wang Qingguo Wang Siyuan Zhang Jinjie 《High Technology Letters》 EI CAS 2026年第2期133-147,共15页
In the field of mechanical equipment fault diagnosis,variations in operational conditions often lead to shifts in data distribution,which consequently results in weakening the diagnostic precision.This study presents ... In the field of mechanical equipment fault diagnosis,variations in operational conditions often lead to shifts in data distribution,which consequently results in weakening the diagnostic precision.This study presents a hybrid data-model driven framework for fault diagnosis under domain deviation,termed the hierarchical attention guided generalization network(HAGNet).This method can effectively enhance fault identification accuracy under domain deviation conditions,even when target domain data is unavailable during the model pretraining phase.Firstly,a multi-channel data fusion module(HADF),which integrates multi-head self-attention and spatial attention mechanisms,is introduced.Subsequently,a cross-domain center-alignment and type-separation(CATS)loss function is developed to extract domain-invariant features.Finally,a multi-classifier ensemble mechanism is constructed to address the issue of insufficient classifier capacity.The contribution of each source domain is dynamically weighted according to its similarity to the target domain,mitigating negative transfer effects from dissimilar sources.Experimental results demonstrate that the proposed HAGNet surpasses existing mainstream methods in fault diagnosis performance. 展开更多
关键词 multi-sensor fusion fault diagnosis domain deviation hierarchical attention mechanism
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Deviation Behavior Analysis and Detection Based on Flight Trajectory Data 认领 引用
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作者 WU Yexin ZHAO Yifei WANG Hongyong 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2026年第1期127-144,共18页
Flight behavior analysis provides the fundamental basis for the future development of air traffic management(ATM).The characteristics of aircraft behavior are inherently reflected in their flight trajectories,impactin... Flight behavior analysis provides the fundamental basis for the future development of air traffic management(ATM).The characteristics of aircraft behavior are inherently reflected in their flight trajectories,impacting flight efficiency and safety levels.However,existing research largely addresses inefficient or abnormal trajectories from a single perspective,with an absence of a unified evaluation standard.This paper introduces a method for analyzing flight deviation behavior based on automatic dependent surveillance-broadcast(ADS-B)data,defining novel metrics of trajectory redundancy and trajectory deviation.An adaptive detection algorithm is developed to capture diverse deviation patterns.Results reveal that higher trajectory redundancy is linked to lower operational efficiency,while trajectory deviation effectively identify stepped descents,holding patterns,detours,and other behaviors.The approach offers data-driven support for anomaly detection,performance evaluation and air traffic management,with substantial significance for civil aviation applications. 展开更多
关键词 deviation behavior flight trajectory flight safety operational efficiency data-driven
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Moderate Deviations for the Parameter Estimation in the Fractional Ornstein-Uhlenbeck Process with H∈(0,1/2) 认领 引用
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作者 Hui JIANG Qing-shan YANG 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2026年第3期905-919,共15页
In this paper,we study the asymptotic properties for estimators of two parameters in the drift function in the ergodic fractional Ornstein-Uhlenbeck process with Hurst index H∈(0,1/2).The Cramér-type moderate de... In this paper,we study the asymptotic properties for estimators of two parameters in the drift function in the ergodic fractional Ornstein-Uhlenbeck process with Hurst index H∈(0,1/2).The Cramér-type moderate deviations,as well as the moderation deviations with explicit rate function can be obtained.The main methods consist of the deviation inequalities and Cramér-type moderate deviations for multiple Wiener-Itôintegrals,as well as the asymptotic analysis techniques. 展开更多
关键词 Cramér-type moderate deviation fractional Ornstein-Uhlenbeck process parameter estimation multiple Wiener-Itôintegrals
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Accuracy allocation method for five-axis machine tools based on geometric error cost sensitivity prioritizing tool direction deviation 认领 引用 被引量：1
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作者 Xiaojian LIU Ao JIAO +7 位作者 Yang WANG Guodong YI Xiangyu GAO Xiaochen ZHANG Yiming ZHANG Yangjian JI Shuyou ZHANG Jianrong TAN 《Journal of Zhejiang University-SCIENCE A》 SCIE EI CAS CSCD 2025年第7期635-651,共17页
Accuracy allocation is crucial in the accuracy design of machining tools.Current accuracy allocation methods primarily focus on positional deviation,with little consideration for tool direction deviation.To address th... Accuracy allocation is crucial in the accuracy design of machining tools.Current accuracy allocation methods primarily focus on positional deviation,with little consideration for tool direction deviation.To address this issue,we propose a geometric error cost sensitivity-based accuracy allocation method for five-axis machine tools.A geometric error model consisting of 4l error components is constructed based on homogeneous transformation matrices.Volumetric points with positional and tool direction deviations are randomly sampled to evaluate the accuracy of the machine tool.The sensitivity of each error component at these sampling points is analyzed using the Sobol method.To balance the needs of geometric precision and manufacturing cost,a geometric error cost sensitivity function is developed to estimate the required cost.By allocating error components affecting tool direction deviation first and the remaining components second,this allocation scheme ensures that both deviations meet the requirements.We also perform numerical simulation of a BC-type(B-axis and C-axis type)five-axis machine tool to validate the method.The results show that the new allocation scheme reduces the total geometric error cost by 27.8%compared to a uniform allocation scheme,and yields the same positional and tool direction machining accuracies. 展开更多
关键词 Five-axis machine tool Accuracy allocation Geometric error modeling Error cost sensitivity Tool direction deviation priority
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Online Optimization to Suppress the Grid-Injected Power Deviation of Wind Farms with Battery-Hydrogen Hybrid Energy Storage Systems 认领 引用 被引量：1
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作者 Min Liu Qiliang Wu +4 位作者 Zhixin Li Bo Zhao Leiqi Zhang Junhui Li Xingxu Zhu 《Energy Engineering》 EI 2025年第4期1403-1424,共22页
To address the issue of coordinated control of multiple hydrogen and battery storage units to suppress the grid-injected power deviation of wind farms,an online optimization strategy for Battery-hydrogen hybrid energy... To address the issue of coordinated control of multiple hydrogen and battery storage units to suppress the grid-injected power deviation of wind farms,an online optimization strategy for Battery-hydrogen hybrid energy storage systems based on measurement feedback is proposed.First,considering the high charge/discharge losses of hydrogen storage and the low energy density of battery storage,an operational optimization objective is established to enable adaptive energy adjustment in the Battery-hydrogen hybrid energy storage system.Next,an online optimization model minimizing the operational cost of the hybrid system is constructed to suppress grid-injected power deviations with satisfying the operational constraints of hydrogen storage and batteries.Finally,utilizing the online measurement of the energy states of hydrogen storage and batteries,an online optimization strategy based on measurement feedback is designed.Case study results show:before and after smoothing the fluctuations in wind power,the time when the power exceeded the upper and lower limits of the grid-injected power accounted for 24.1%and 1.45%of the total time,respectively,the proposed strategy can effectively keep the grid-injected power deviations of wind farms within the allowable range.Hydrogen storage and batteries respectively undertake long-term and short-term charge/discharge tasks,effectively reducing charge/discharge losses of the Battery-hydrogen hybrid energy storage systems and improving its operational efficiency. 展开更多
关键词 Battery-hydrogen hybrid energy storage systems grid-injected power deviations measurement feedback online optimization energy states
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Angular deviations and influential factors of Burgers orientation relationship duringβ→αphase transformation in titanium alloys 认领 引用
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作者 Ming-bing LI Kai WANG +6 位作者 Bin WANG Chao LV Xin-nan WANG Xing LI Zhi-shou ZHU Hui-long HOU Xin-qing ZHAO 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2025年第9期2903-2917,共15页
The angular deviations and influential factors of Burgers orientation relationship(BOR)in Ti-6Al-4V and Ti-6.5Al-2Zr-1Mo-1V alloys were investigated by optical microscope(OM),scanning electron microscope(SEM),electron... The angular deviations and influential factors of Burgers orientation relationship(BOR)in Ti-6Al-4V and Ti-6.5Al-2Zr-1Mo-1V alloys were investigated by optical microscope(OM),scanning electron microscope(SEM),electron backscattered diffraction(EBSD)and high-angle annular dark-field scanning transmission electron microscope(HAADF-STEM).A spherical center angle model was introduced to calculate the angular deviations from the ideal BOR between α and β phases.The results indicate thatαand β phases in α colonies of both alloys do not follow the perfect BOR during β→α phase transformation,with angular deviation values less than 3°.Through detailed microstructure characterization,the broad face of α/β interfaces viewed along two different electron incident directions shows the atomic-scale terrace-ledge structure,and many dislocations are observed within α and β phases and near α/β interfaces.Further studies reveal that the angular deviations mainly originate from lattice distortions caused by dislocations in α and β phases and lattice mismatches at α/β interfaces. 展开更多
关键词 titanium alloy Burgers orientation relationship angular deviation α/βinterface dislocation lattice distortion
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Refractive error and angle of deviation in basic esotropia versus exotropia:a comparative study 认领 引用
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作者 Babak Masoomian Mohammad Reza Akbari +4 位作者 Arash Mirmohammadsadeghi Sajida Madeeh Fadhl Ali Majdi Kimia Daneshvar Masoud Khorrami-Nejad 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2025年第12期2339-2344,共6页
AIM:To compare refractive error and angle of deviation in patients with basic esotropia and basic exotropia.METHODS:A retrospective review was conducted on the medical records of patients with basic-type strabismus.De... AIM:To compare refractive error and angle of deviation in patients with basic esotropia and basic exotropia.METHODS:A retrospective review was conducted on the medical records of patients with basic-type strabismus.Demographic data,refractive error,best-corrected distance visual acuity(BCVA),and the horizontal and vertical angle of deviation between basic esotropia and exotropia patients were compared.RESULTS:Among the 7129 patients(mean age 22.98±14.81y)evaluated,44.7%(3185 cases,54.9%male)exhibited basic-type esotropia,while 55.3%(3944 cases,53.9%male)presented with basic-type exotropia.Basic esotropia cases exhibited more hyperopic spherical equivalent measurements in both eyes(right:0.53±3.07 vs left:0.56±2.98 D)than those with basic exotropia(right eye:-0.33±2.84 vs left eye:-0.24±2.68 D,P<0.001 for both eyes).Patients with basic esotropia had significantly greater horizontal deviation angles(near:36.08±18.87 PD and far:35.56±18.75 PD)compared to those with basic exotropia(near:33.75±16.11 PD and far:33.26±15.90 PD,P<0.001).Conversely,patients with basic exotropia had slightly higher vertical deviation angles(near:1.67±5.80 PD and far:1.72±5.89 PD)compared to those with basic esotropia(near:1.12±4.57 PD and far:1.12±4.58 PD,P<0.001).Patients with basic esotropia underwent surgical intervention at younger ages compared to basic exotropia individuals(19.68±15.99 vs 25.66±13.20,P<0.001).CONCLUSION:Basic esotropia patients present more hyperopic refractive errors,better visual acuity,larger horizontal yet smaller vertical ocular misalignments,and tend to undergo strabismus surgery at younger ages relative to basic exotropia cases. 展开更多
关键词 basic esotropia basic exotropia refractive error angle of deviation
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Low-computational time and accurate classification of flow regimes in bubble columns for aquaculture aeration using probability density functions of bubble velocity standard deviation 认领 引用
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作者 Natee Thong-Un Wongsakorn Wongsaroj +2 位作者 Jirayut Hansot Weerachon Treenuson Hiroshige Kikura 《Theoretical & Applied Mechanics Letters》 EI CAS CSCD 2025年第5期469-478,共10页
This study explores the combination of ultrasound technology with a detection algorithm to categorize flow regimes in bubble columns used for aeration in aquaculture.An ultrasonic velocity profiler is used to obtain t... This study explores the combination of ultrasound technology with a detection algorithm to categorize flow regimes in bubble columns used for aeration in aquaculture.An ultrasonic velocity profiler is used to obtain the standard deviation of the bubble velocity distributed throughout the column.The bubble velocity data for three known flow regimes were used to develop a probability density function(PDF)classification model.The experimental apparatus consisted of a circular tank equipped with a bubble generator and gas hold-up monitoring systems.The flow regimes of the experimental fluid were determined,and the classification was conducted via the PDF method.The results demonstrate that the classification accuracy is not lower than that of traditional machine learning methods. 展开更多
关键词 Aquaculture aeration Bubble column Bubble velocity standard deviation Flow regime Ultrasonic velocity profiler
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Diagnostic Method for Load Deviation in Ultra-Supercritical Units Based on MLNaNBDOS 认领 引用
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作者 Mingzhu Tang YujieHuang +1 位作者 Dongxu Ji Hao Yu 《Frontiers in Heat and Mass Transfer》 EI CAS 2025年第1期95-129,共35页
Load deviations between the output of ultra-supercritical(USC)coal-fired power units and automatic generation control(AGC)commands can adversely affect the safe and stable operation of these units and grid load dispat... Load deviations between the output of ultra-supercritical(USC)coal-fired power units and automatic generation control(AGC)commands can adversely affect the safe and stable operation of these units and grid load dispatching.Data-driven diagnostic methods often fail to account for the imbalanced distribution of data samples,leading to reduced classification performance in diagnosing load deviations in USC units.To address the class imbalance issue in USC load deviation datasets,this study proposes a diagnostic method based on the multi-label natural neighbor boundary oversampling technique(MLNaNBDOS).The method is articulated in three phases.Initially,the traditional binary oversampling strategy is improved by constructing a binary multi-label relationship for the load deviations in coal-fired units.Subsequently,an adaptive adjustment of the oversampling factor is implemented to determine the oversampling weight for each sample class.Finally,the generation of new instances is refined by dynamically evaluating the similarity between new cases and natural neighbors through a random factor,ensuring precise control over the instance generation process.In comparisons with nine benchmark methods across three imbalanced USC load deviation datasets,the proposed method demonstrates superior performance on several key evaluation metrics,including Micro-F1,Micro-G-mean,and Hamming Loss,with average values of 0.8497,0.9150,and 0.1503,respectively.These results substantiate the effectiveness of the proposed method in accurately diagnosing the sources of load deviations in USC units. 展开更多
关键词 Ultra-supercritical units load deviation multi-label learning class imbalance data oversampling
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Moonward deviation of the solar wind 认领 引用
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作者 Chao Wei Hui Zhang +3 位作者 QuanMing Lu JunYi Ren XiaoWei Ma RunZe Li 《Earth and Planetary Physics》 EI CSCD 2025年第6期1157-1162,共6页
The solar wind's interaction with the Moon has traditionally been understood through the Moon's absorption of solar wind particles and the formation of a plasma cavity on its nightside,known as the lunar wake.... The solar wind's interaction with the Moon has traditionally been understood through the Moon's absorption of solar wind particles and the formation of a plasma cavity on its nightside,known as the lunar wake.This study reveals unexpected,large-scale perturbations in the solar wind upstream of the Moon,using 11 years of data from the OMNI and ARTEMIS(Acceleration,Reconnection,Turbulence and Electrodynamics of Moon's Interaction with the Sun)missions(2012-2023).We find systematic moonward deviations of~tens of km/s in a direction perpendicular to the solar wind(moonward),at altitudes of up to 1000 km,particularly when the interplanetary magnetic field(IMF)lines are oblique to the solar wind(30°<θ<60°)and connected to the lunar dayside.The longer the duration of the interaction,the greater the moonward deviation.These perturbations can be explained by neither solar wind pickup of the reflected ions,nor lunar wake dynamics.Instead,they appear to correlate with magnetic connectivity between the ARTEMIS probes and the lunar surface,suggesting a more complex solar wind interaction than previously thought. 展开更多
关键词 plasma-moon interaction moonward deviation IMF connectivity lunar upstream perturbations
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Radial artery deviation and reimplantation technique vs classical technique in arterio-venous fistula:A randomised control trial 认领 引用
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作者 Shakti S Sarangi Shashank Kumar +4 位作者 Deepak P Bhirud Mahendra Singh Shiv C Navriya Gautam Ram Choudhary Arjun Singh Sandhu 《World Journal of Nephrology》 2025年第2期139-146,共8页
BACKGROUND Surgically created arterio-venous fistulas(AVFs)are the gold standard for haemodialysis access for patients with end-stage renal disease.Standard practice of AVF creation involves selecting the non-dominant... BACKGROUND Surgically created arterio-venous fistulas(AVFs)are the gold standard for haemodialysis access for patients with end-stage renal disease.Standard practice of AVF creation involves selecting the non-dominant upper limb and starting with most distally with radio-cephalic arterio-venous fistula.The primary patency rate of radio-cephalic arterio-venous fistula varies from 20%-25%.It has been suggested the neointimal hyperplasia at the mobilized venous segment causes stenosis of the anastomosis.Therefore,the radial artery deviation and reimplantation(RADAR)technique,in which the vein is minimally mobilized,should result in a higher success rate.AIM To compare the RADAR technique with classical technique in creation of AVF including:(1)Success rate;(2)Time to maturation;(3)Duration of surgery;and(4)Complication rate.METHODS In our study we recruited 94 patients in two randomized groups and performed the AVF by the classical method or the RADAR method.RESULTS The RADAR group had higher primary success rate(P=0.007),less rate of complications(P=0.04),shorter duration of surgery(P=0.00)and early time to maturation(0.001)when compared with the classical group.The RADAR procedure is a safe and a more efficient alternative to the current classical method of AVF creation.Longer duration of follow-up is required to assess the long-term outcomes in the future.CONCLUSION The RADAR procedure is a safe and more efficient alternative to the current classical method of AVF creation.Longer duration of follow-up is required to assess the long-term outcomes in the future. 展开更多
关键词 Radial artery deviation and reimplantation technique Classical technique Arterio-venous fistula Arterio-venous fistula trial Dialysis fistula Chronic kidney disease
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ASYMPTOTICS OF LARGE DEVIATIONS OF FINITE DIFFERENCE METHOD FOR STOCHASTIC CAHN-HILLIARD EQUATION 认领 引用
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作者 Diancong JIN Derui SHENG 《Acta Mathematica Scientia》 SCIE CSCD 2025年第3期1078-1106,共29页
In this work, we first derive the one-point large deviations principle (LDP) for both the stochastic Cahn–Hilliard equation with small noise and its spatial finite difference method (FDM). Then, we focus on giving th... In this work, we first derive the one-point large deviations principle (LDP) for both the stochastic Cahn–Hilliard equation with small noise and its spatial finite difference method (FDM). Then, we focus on giving the convergence of the one-point large deviations rate function (LDRF) of the spatial FDM, which is about the asymptotical limit of a parametric variational problem. The main idea for proving the convergence of the LDRF of the spatial FDM is via the Γ-convergence of objective functions. This relies on the qualitative analysis of skeleton equations of the original equation and the numerical method. In order to overcome the difficulty that the drift coefficient is not one-sided Lipschitz continuous, we derive the equivalent characterization of the skeleton equation of the spatial FDM and the discrete interpolation inequality to obtain the uniform boundedness of the solution to the underlying skeleton equation. These play important roles in deriving the T-convergence of objective functions. 展开更多
关键词 large deviations rate function finite difference method convergence analysis F-convergence stochastic Cahn-Hilliard equation
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Moderate Deviations for the Optimal Values of Sample Average Approximation with Adaptive Multiple Importance Sampling 认领 引用
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作者 Wenjin ZHANG 《Journal of Mathematical Research with Applications》 CSCD 2025年第2期275-284,共10页
In this paper, we use sample average approximation with adaptive multiple importance sampling to explore moderate deviations for the optimal values. Utilizing the moderate deviation principle for martingale difference... In this paper, we use sample average approximation with adaptive multiple importance sampling to explore moderate deviations for the optimal values. Utilizing the moderate deviation principle for martingale differences and an appropriate Delta method, we establish a moderate deviation principle for the optimal value. Moreover, for a functional form of stochastic programming, we obtain a functional moderate deviation principle for its optimal value. 展开更多
关键词 adaptive multiple importance sampling martingale difference moderate deviation
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