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Novel interaction phenomena of the(3+1)-dimensional Jimbo–Miwa equation

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Communications in Theoretical Physics 2020年第4期72卷 1-10页

作者： xiaomin wang Sudao Bilige Department of Mathematics Inner Mongolia University of TechnologyHohhote010051China

In this paper,we give the general interaction solution to the(3+1)-dimensional Jimbo–Miwa *** general interaction solution contains the classical interaction *** an example,by using the generalized bilinear method and symbolic computation by using Maple software,novel interaction solutions under certain constraints of the(3+1)-dimensional Jimbo–Miwa equation are *** three-dimensional plots,contour plots and density plots with the help of Maple,the physical characteristics and structures of these waves are described very *** solutions greatly enrich the exact solutions to the(3+1)-dimensional Jimbo–Miwa equation found in the existing literature.

关键词： generalized bilinear equation interaction solution dynamical characteristics (3+1)-dimensional Jimbo–Miwa equation symbolic computation

A review of computational modeling and deep brain stimulation:applications to Parkinson’s disease

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Applied Mathematics and Mechanics(English Edition) 2020年第12期41卷 1747-1768页

作者： Ying YU xiaomin wang Qishao wang Qingyun wang Department of Dynamics and Control Beihang UniversityBeijing 100191China

Biophysical computational models are complementary to experiments and theories,providing powerful tools for the study of neurological *** focus of this review is the dynamic modeling and control strategies of Parkinson’s disease(PD).In previous studies,the development of parkinsonian network dynamics modeling has made great *** mainly focuses on the cortex-thalamus-basal ganglia(CTBG)circuit and its sub-circuits,which helps to explore the dynamic behavior of the parkinsonian network,such as *** brain stimulation(DBS)is an effective strategy for the treatment of *** present,many studies are based on the side effects of the ***,the translation from modeling results to clinical disease mitigation therapy still faces huge ***,we introduce the progress of DBS *** specific purpose is to develop novel DBS treatment methods,optimize the treatment effect of DBS for each patient,and focus on the study in closed-loop *** goal is to review the inspiration and insights gained by combining the system theory with these computational models to analyze neurodynamics and optimize DBS treatment.

关键词： computational model deep brain stimulation(DBS) Parkinson’s disease(PD) basal ganglia(BG)

Farmers' Risk Preferences and Agricultural Weather Index Insurance Uptake in Rural China

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International Journal of Disaster Risk Science 2016年第4期7卷 366-373页

作者： Jianjun Jin Wenyu wang xiaomin wang College of Resources Science and Technology Beijing Normal University

The purpose of this study is to investigate the effect of farmers' risk preferences on their decisions to purchase the agricultural weather index insurance based on the evidence from a household survey and field experiments conducted in Yongqiao District,Suzhou City of Anhui Province in *** empirical results show that farmers' risk aversion significantly increases the probability of their decision to buy weather index-based crop *** factors that significantly influence weather index insurance participation decisions include farmers' subjective beliefs on the probability of crop losses,farming experience,education level,farm size,and their household *** empirical results of this study can provide helpful insights for policymakers and local insurers to further improve farmers' participation in weather indexbased crop insurance.

关键词： China Farmers’ risk aversion Risk preference Weather index insurance

Dynamic Critical Behavior of Sierpinski Gasket Type Fractal

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Chinese Physics Letters 1991年第8期8卷 396-399页

作者： wang xiaomin TAO Ruibao Department of Physics Fudan UniversityShanghai 200433 Center of Theoretical Physics(CCAST World Laboratory) Beijing 100080

We have applied the exact real space renormalisation group method to analyse the critical dynamics of Heisenberg spin system at the percolation threshold embedded in the two dimensional Sierpinski Gasket type *** analysis yields the dynamic critical exponent Z and the scaling behaviors of response function and characteristic *** aha show that the scaling exponent relation is accurately satisfied by the values of the Z and two other exponents.

关键词： exponent Sierpinski scaling

Numerical analysis of capacitive pressure micro-sensors

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Science China(Technological Sciences) 2005年第2期48卷 202-213页

作者： wang xiaomin LI Mingxuan wang Chenghao Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China

Pseudo-spectral method is used to numerically model the diaphragm deflection of capacitive pressure micro-sensor under uniform load. The relationship between the capacitance of the micro-sensor and the load is then analyzed after the description of the computational principle. For normal mode micro-sensor, the tensile force on the diaphragm can be ignored and thereby the capacitance increases linearly with the load increase only when the load is so small that the resultant deflection is less than the diaphragm thickness. The linear relationship between the capacitance and the load turns to be nonlinear thereafter and the capacitance rises dramatically with the constant increase of the load. For touch mode micro-sensor, an algorithm to determine the touch radius of the diaphragm and substrate is presented and the curve of capacitance versus load is shown on the numerical results laying a theoretical foundation for micro-sensor design.

关键词： pseudo-spectral method, capacitive pressure micro-sensor, capacitance vs. load.

Phase Transitions of Ultradiffusion Model on Vicsek Snowflakes Fractal

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Chinese Physics Letters 1991年第9期8卷 476-479页

作者： wang xiaomin TAO Ruibao Department of Physics Fudan UniversityShanghai 200433 Center of Theoretical Physics(CCAST World Laboratory) Beijing

Through an exact real space renormaligation group approach,we analysed the ultradiffusion with a hierarchical pattern of hopping rates defined on Vicsek snowflackes *** transition from anomalous to normal diffusion is shown to occur in the arbitrary n-dimension(n-D)*** the presence of external field,we find another unusual transition which is essentially different from the one for biased ultradiffusion of 1-D multifurcating hierarchical system.

关键词： diffusion Transition transition

A WAVELET METHOD FOR BENDING OF CIRCULAR PLATE WITH LARGE DEFLECTION

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Acta Mechanica Solida Sinica 2015年第1期28卷 83-90页

作者： xiaomin wang Xiao jing Liu Jizeng wang Youhe Zhou College of Engineering Huazhong Agricultural University Key Laboratory of Mechanics on Disaster and Environment in Western China the Ministry of Education of China and College of Civil Engineering and Mechanics Lanzhou University

A wavelet method for solving strongly nonlinear boundary value problems is described, which has been demonstrated early to have a convergence rate of order 4, almost independent of the nonlinear intensity of the equations. By using such a method, we study the bending problem of a circular plate with arbitrary large deflection. As the deflection increases, the bending behavior usually exhibits a so-called plate-to-membrane transition. Capturing such a transition has ever frustrated researchers for decades. However, without introducing any addi- tional treatment, we show in this study that the proposed wavelet solutions can naturally cover the plate-membrane transition region as the plate deflection increases. In addition, the high accuracy and efficiency of the wavelet method in solving strongly nonlinear problems is numerically confirmed, and applicable scopes for the linear, the membrane and the yon Karman plate theories are identified with respect to the large deformation bending of circular plates.

关键词： large deformation bending problem circular plate wavelet method

Electroacupuncture Alleviates Motor Symptoms and Up-Regulates Vesicular Glutamatergic Transporter 1 Expression in the Subthalamic Nucleus in a Unilateral 6-Hydroxydopamine-Lesioned Hemi-Parkinsonian Rat Model

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Neuroscience Bulletin 2018年第3期34卷 476-484页

作者： Yanyan wang Yong wang Junhua Liu xiaomin wang Department of Neurobiology Capital Medical UniversityBeijing 100069 China Department of Physiology Capital Medical UniversityBeijing 100069 China Key Laboratory for Neurodegenerative Disorders The Ministry of Education of China Beijing 100069 China Beijing Institute for Brain Disorders Beijing 100069 China

Previous studies have shown that electroacupuncture（EA） promotes recovery of motor function in Parkinson＇s disease（PD）. However the mechanisms are not completely understood. Clinically, the subthalamic nucleus（STN） is a critical target for deep brain stimulation treatment of PD, and vesicular glutamate transporter 1（VGlu T1） plays an important role in the modulation of glutamate in the STN derived from the cortex. In this study,a 6-hydroxydopamine（6-OHDA）-lesioned rat model of PD was treated with 100 Hz EA for 4 weeks. Immunohistochemical analysis of tyrosine hydroxylase（TH） showed that EA treatment had no effect on TH expression in the ipsilateral striatum or substantia nigra pars compacta,though it alleviated several of the parkinsonian motor symptoms. Compared with the hemi-parkinsonian rats without EA treatment, the 100 Hz EA treatment significantly decreased apomorphine-induced rotation and increased the latency in the Rotarod test. Notably, the EA treatment reversed the 6-OHDA-induced down-regulation of VGlu T1 in the STN. The results demonstrated that EA alleviated motor symptoms and up-regulated VGlu T1 in the ipsilateral STN of hemi-parkinsonian rats, suggesting that up-regulation of VGlu T1 in the STN may be related to the effects of EA on parkinsonian motor symptoms via restoration of function in the cortico-STN pathway.

关键词： Parkinson's disease Electroacupuncture Motor behavior Vesicular glutamate transporter 1

Research advances in gene therapy for Parkinson's disease

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Chinese Science Bulletin 1998年第5期43卷 363-368页

作者： MA Duanduan wang xiaomin HAN Jisheng Neuroscience Research Institute Beijing Medical UniversityBeijing 100083China.

During the long period of time when people have been seeking for an effective therapeutic method for PD, the gene therapy has shown greater and greater advantages over other methods. It can be performed mainly in two ways: ex vivo and in vivo. With the former, TH gene as well as some neurotrophic factor genes (such as GDNF, BNDF genes) can be invited to some cell lines or primary cells thus forming engineered cells and then implanting them into brain. While with the latter, viral vectors including HSV-1, Ad, AAV that can be utilized to construct recombinant viruses, or non-virus vectors can be used to delived DNA into brain directly. The present review summarizes the recent research advances in the gene therapy for PD, and it is reasonable for us to predict a notable progress in prevention and treatment for PD in the next decade.

关键词： Parkinsion's disease(PD) gene therapy tyrosine hydroxylase(TH) GDNF virus vector