检索结果-南通市图书馆

World Journal of Clinical Cases 2025年第2期13卷 5-9页

作者： wei zhu Shanghai XiRong Information Science and Technology Co. LtdNational Science and Technology ParkSchool of Life Sciences and TechnologyTongji UniversityShanghai 200092China

Sotos syndrome is characterized by overgrowth features and is caused by alterations in the nuclear receptor binding SET domain protein 1 ***/hyperactivity disorder(ADHD)is considered a neurodevelopment and psychiatric disorder in *** characteristics and clinical presentation could play an important role in the diagnosis of Sotos syndrome and *** resonance imaging(MRI)has been used to assess medical images in Sotos syndrome and *** images process is considered to display in MRI while wavelet fusion has been used to integrate distinct images for achieving more complete information in single image in this *** the future,genetic mechanisms and artificial intelligence related to medical images could be used in the clinical diagnosis of Sotos syndrome and ADHD.

关键词： Sotos syndrome Attention-deficit/hyperactivity disorder Genetic mutation Magnetic resonance imaging Wavelet fusion

A New Derivation of Standard Quantum Chromodynamics Evolution Equation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 1999年第7期16卷 481-483页

作者： zhu wei Department of Physics East China Normal UniversityShanghai 200062

Standard evolution equation including virtual graphs is derived in time ordered perturbative *** propose a new cutting rule in deep inelastic scattering processes,which provides a useful tool for discussing the connec... 详细信息

关键词： equation. theory. ordered

On the Regularity Theories for Harmonic Maps from Finsler Manifolds

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2012年第4期33卷 595-600页

作者： wei zhu Department of Mathematics Zhejiang University Hangzhou 310027 China.

The author studies the regularity of energy minimizing maps from Finsler manifolds to Riemannian manifolds. It is also shown that the energy minimizing maps are smooth, when the target manifolds have no focal points.

关键词： Finsler manifolds Harmonic map Regularity

Some results on P-harmonic maps and exponentially harmonic maps between Finsler manifolds

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics(A Journal of Chinese Universities) 2010年第2期25卷 236-242页

作者： zhu wei Department of Mathematics Zhejiang University Hangzhou 310027 China

This paper studies the stability of P-harmonic maps and exponentially harmonic maps from Finsler manifolds to Riemannian manifolds by an extrinsic average variational method in the calculus of variations. It generaliz... 详细信息

关键词： Finsler manifolds stable P-harmonic maps exponentially harmonic maps.

Clogging processes caused by biofilm growth and organic particle accumulation in lab-scale vertical flow constructed wetlands

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2009年第6期21卷 750-757页

作者： ZHAO Lianfang zhu wei TONG wei College of Environmental Science and Engineering Hohai University Nanjing 210098 China Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education of China Nanjing 210098 China

The accumulation of organic matter in substratum pores is regarded as an important factor causing clogging separately in the subsurface flow constructed *** this study,the developing process of clogging caused by biofilm growth or organic particle accumulation instead of total organic matter accumulation was investigated in two groups of lab-scale vertical flow constructed wetlands（VFCWs）,which were fed with glucose（dissolved organic matter） and starch（particulate organic matter） *** showed that the growth of biofilms within the substratum pores certainly caused remarkable reduction of effective porosity,especially for the strong organic wastewater,whereas its influence on infiltration rate was *** was implied that the most important contribution of biofilm growth to clogging was accelerating the occurrence of *** comparison with biofilm growth,particles accumulation within pores could rapidly reduce infiltration rate besides effective porosity and the clogging occurred in the upper 0-15 cm *** approximately equal amount of accumulated organic matter,the effective porosity of the clogged layer in starch-fed systems was far less than that of glucose-fed systems,which indicated that composition and accumulation mode in addition to the amount of the accumulated organic matter played an important role in causing clogging.

关键词： clogging constructed wetland organic matter particle accumulation biofilms

A Second-Order Image Denoising Model for Contrast Preservation

在线全文

学校读者我要写书评

暂无评论

Communications on Applied Mathematics and Computation 2024年第2期6卷 1406-1427页

作者： wei zhu Department of Mathematics University of AlabamaBox 870350TuscaloosaAL35487USA

In this work,we propose a second-order model for image denoising by employing a novel potential function recently developed in zhu(J Sci Comput 88:46,2021)for the design of a regularization *** to this new second-order derivative based regularizer,the model is able to alleviate the staircase effect and preserve image *** augmented Lagrangian method(ALM)is utilized to minimize the associated functional and convergence analysis is established for the proposed *** experiments are presented to demonstrate the features of the proposed model.

关键词： Image denoising Variational model Image contrast Augmented Lagrangian method(ALM)

Optimal Control of Variational Inequalities with Delays in the Highest Order Spatial Derivatives

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2006年第2期22卷 607-624页

作者： Shang wei zhu Institute of Mathematics Fudan University Department of Applied Mathematics Shanxi Finance & Economics University

In this paper, an optimal control problem for parabolic variational inequalities with delays in the highest order spatial derivatives is investigated. The well-posedness of such kinds of variational inequalities is established. The existence of optimal controls under a Cesari-type condition is proved, and the necessary conditions of Pontryagin type for optimal controls is derived.

关键词： Variational inequalities Time-delay operator Optimal control. Maximum Drinciple

Shipborne radar maneuvering target tracking based on the variable structure adaptive grid interacting multiple model

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第9期14卷 733-742页

作者： Zheng-wei zhu School of Information Engineering Southwest University of Science and Technology Mianyang 621010 China

The trajectory of a shipbome radar target has a certain complexity, randomness, and diversity. Tracking a strong maneuvering target timely, accurately, and effectively is a key technology for a shipbome radar tracking system. Combining a variable structure interacting multiple model with an adaptive grid algorithm, we present a variable structure adaptive grid inter- acting multiple model maneuvering target tracking method. Tracking experiments are performed using the proposed method for five maneuvering targets, including a uniform motion - uniform acceleration motion target, a uniform acceleration motion - uni- form motion target, a serpentine locomotion target, and two variable acceleration motion targets. Experimental results show that the target position, velocity, and acceleration tracking errors for the five typical target trajectories are small. The method has high tracking precision, good stability, and flexible adaptability.

关键词： Shipbome radar Target tracking Variable structure Interacting multiple model Adaptive grid algorithm

A Triangular Decomposition Algorithm for Differential Polynomial Systems with Elementary Computation Complexity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2017年第2期30卷 464-483页

作者： zhu wei GAO Xiao-Shan Key Laboratory of Mathematics Mechanization Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China

In this paper, a new triangular decomposition algorithm is proposed for ordinary differential polynomial systems, which has triple exponential computational complexity. The key idea is to eliminate one algebraic variable from a set of polynomials in one step using the theory of multivariate resultant. This seems to be the first differential triangular decomposition algorithm with elementary computation complexity.

关键词： Differential polynomial system regular triangular set saturated triangular set triangular decomposition.

New regularization method and iteratively reweighted algorithm for sparse vector recovery

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2020年第1期41卷 157-172页

作者： wei zhu Hui ZHANG Lizhi CHENG Post-doctoral Research Station of Statistics School of Mathematics and Computational ScienceXiangtan UniversityXiangtan 411105Hunan ProvinceChina Department of Mathematics National University of Defense TechnologyChangsha 410073China

Motivated by the study of regularization for sparse problems,we propose a new regularization method for sparse vector *** derive sufficient conditions on the well-posedness of the new regularization,and design an iterative algorithm,namely the iteratively reweighted algorithm(IR-algorithm),for efficiently computing the sparse solutions to the proposed regularization *** convergence of the IR-algorithm and the setting of the regularization parameters are analyzed at ***,we present numerical examples to illustrate the features of the new regularization and algorithm.

关键词： regularization method iteratively reweighted algorithm(IR-algorithm) sparse vector recovery