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元·汾渭裂谷文章多——漫步地震五千年(12)

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地震科学进展 2025年第1期55卷 43-62页

作者：冯锐中国地震台网中心北京100045

元朝的山西洪洞于1303年发生8级地震,揭示了汾渭裂谷系在构造和运动上的一系列特殊性。该区地震活动具有准周期性、南移北跳和强震复发的特点。分析了汾渭裂谷的形成、雁行断裂构造、构造应力场和深部高温体的环境背景。为深入认识地球... 详细信息

元朝的山西洪洞于1303年发生8级地震,揭示了汾渭裂谷系在构造和运动上的一系列特殊性。该区地震活动具有准周期性、南移北跳和强震复发的特点。分析了汾渭裂谷的形成、雁行断裂构造、构造应力场和深部高温体的环境背景。为深入认识地球动力学过程,需要扩展眼光,介绍了对地壳块体旋转问题的研究,涉及到鄂尔多斯块体旋转、亚洲中部大区域的地块旋转、汾渭裂谷和贝加尔裂谷的对比、地幔密度分布、喜马拉雅构造结和全球非对称等基本问题。

关键词：汾渭裂谷地壳块体的旋转雁行断裂地幔

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Existence of Optical Vortex Solitons in Pair Plasmas

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Acta Mathematicae Applicatae Sinica 2023年第3期39卷 571-582页

作者： rui-feng ZHANG School of Mathematics and Statistics Henan UniversityKaifeng 475004China

Optical vortices arise as phase dislocations of light fields and they are of importance in modern optical *** this study,we employ the calculus of variations method to develop an existence theory for the steady state vortex solutions of a nonlinear Schr?dinger type equation to model light waves that propagate in a medium with a new focusing-defocusing ***,we demonstrate the existence of positive radially symmetric solutions by constrained minimization,where we give some interesting explicit estimates related to vortex winding numbers and the wave propagation ***,we establish the existence of saddle-point solutions through a mountain-pass argument.

关键词： Calculus of variations mountain-pass theorem pair plasmas nonlinear Schr?dinger type equation optical vortices

Synthesis and Crystal Structure of Binuclear Silver(I) Complex with 2-nitro-(2-pyridylsulfanylmethyl)benzene

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Chinese Journal of Structural Chemistry 2005年第11期24卷 1306-1309页

作者： SONG rui-feng Department of Chemistry and Chemical Engineering University of Science and Technology of Suzhou Suzhou 215009 China

The reaction of 2-nitro-（2-pyridylsulfanylmethyl）benzene L with silver nitrate produces a centrosymmetric binuclear complex bis（2-nitro-（2-pyridylsulfanylmethyl）benzene-N,S）- bis（nitrato-O,O）-disilver（Ⅰ）, [AgLNO3]2 1. The crystal is of triclinic, space group PI, with a = 7.383 （3）, b = 8.340（3）, c = 12..003（4） A, a = 95.069（6）, β = 93.498（5）, γ = 102.734（6）°, C24H20Ag2N6- O10S2, Mr= 832.32, V = 715.6（4） ,A^3, Z = 1, Dc = 1.931 g/cm^3, F（000） = 412,μ = 1.581 mm^-1, R= 0.0351 and wR = 0.0749 Each silver atom is tetrahedrally coordinated by two O atoms from bidentate nitrate, one S atom from a ligand and one N atom from another ligand. Furthermore, Ag- Ag interactions have been observed in the complex.

关键词： silver(Ⅰ) complex 2-nitro-(2-pyridylsulfanylmethyl)benzene crystal structure,Ag-Ag interactions

The Global Attractors for the Dissipative Generalized Hasegawa-Mima Equation

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Acta Mathematicae Applicatae Sinica 2008年第1期24卷 19-28页

作者： rui-feng Zhang Institute of Applied Mathematics Henan University College of Mathematics and Information Science Henan University Kaifeng 475001 China

The long time behavior of solutions of the generalized Hasegawa-Mima equation with dissipation term is considered. The existence of global attractors of the periodic initial value problem is proved, and the estimate of the upper bound of the Hausdorff and fractal dimensions for the global attractors is obtained by means of uniform a priori estimates method.

关键词： Hasegawa-Mima equation global attractors hausdorff dimension fractal dimension

Novel algorithm for complex bit reversal:employing vector permutation and branch reduction methods

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第10期10卷 1492-1499页

作者： feng YU Ze-ke WANG rui-feng GE Department of lnstrument Engineering Zhejiang University Hangzhou 310027 China

We present novel vector permutation and branch reduction methods to minimize the number of execution cycles for bit reversal *** new methods are applied to single instruction multiple data(SIMD) parallel implementation of complex data floating-point fast Fourier transform(FFT).The number of operational clock cycles can be reduced by an average factor of 3.5 by using our vector permutation methods and by 1.1 by using our branch reduction methods,compared with conventional *** on MPC7448(a well-known SIMD reduced instruction set computing processor) demonstrate that our optimal bit-reversal algorithm consistently takes fewer than two cycles per element in complex array operations.

关键词： Bit reversal Vector permutation Branch reduction Single instruction multiple data (SIMD) Fast Fourier transform (FFT)

AN EXPLICIT PSEUDO-SPECTRAL SCHEME WHIT ALMOST UNCONDITIONAL STABILITY FOR THE CAHN-HILLIARD EQUATION

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Journal of Computational Mathematics 2000年第2期18卷 165-172页

作者： Bai-nian Lu rui-feng Zhang Department of Mathematics Shaanxi Normal UniversityXi’an 710062China Department of Mathematics Kaifeng Normal CollageKaifengChina

Proposes an explicit fully discrete three-level pseudo-spectral scheme with unconditional stability for the Cahn-Hilliard equation. Equations for pseudo-spectral scheme; Analysis of linear stability of critical points.

关键词： Cahn-Hilliard equation pseudo-spectral scheme almost unconditional stability linear stability for criticlal points numerical experiments

Stochastic gradient algorithm for a dual-rate Box-Jenkins model based on auxiliary model and FIR model

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第2期15卷 147-152页

作者： Jing CHEN rui-feng DING School of Science Jiangnan University School of Internet of Things Engineering Jiangnan University

Based on the work in Ding and Ding(2008),we develop a modifed stochastic gradient(SG)parameter estimation algorithm for a dual-rate Box-Jenkins model by using an auxiliary *** simplify the complex dual-rate Box-Jenkins model to two fnite impulse response(FIR)models,present an auxiliary model to estimate the missing outputs and the unknown noise variables,and compute all the unknown parameters of the system with colored *** results indicate that the proposed method is efective.

关键词： Parameter estimation Auxiliary model Dual-rate system Stochastic gradient Box-Jenkins model FIR model

The Solutions of the Coupled Einstein-Maxwell Equations and Dilaton Equations

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Acta Mathematicae Applicatae Sinica 2018年第3期34卷 485-492页

作者： rui-feng ZHANG Ya GU Institute of Contemporary Mathematics Henan University Kaifeng 475004 China School of Mathematics and Statistics Henan University Kaifeng 475004 China

In this paper, we consider extremely charged static perfect fluid distributions with a dilaton field in the framework of general relativity. By using calculus of variations, we establish the existence theorem for the solutions of this important gravitational system. We show that there is a continuous family of smooth solutions realizing asymptotically flat space metrics.

关键词： nonlinear elliptic equations the variational method the asymptotic estimates.

The Existence of Solutions for the Problem in the Optical Lattice with Nonlocal Nonlinearity

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Acta Mathematicae Applicatae Sinica 2012年第4期28卷 681-690页

作者： rui-feng ZHANG Ren-tao LIU Institute of Contemporary Mathematics Henan University College of Mathematics and Information Science Henan University

We address the impact of nonlocality in the physical features exhibited by solitons supported by Kerr-type nonlinear media with an imprinted optical lattice. We discuss the solitons solution for a class of nonlinear SchrSdinger equations in the optical lattice with nonlocal nonlinearity. We also show via a uniform priori estimate that existence and uniqueness of the global solution for the initial problem.

关键词： SchrSdinger equation Cauchy problem contract mapping principle Calerkin method