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| 1 | Density functional theory for adsorption of HCHO on the FeO(100) surface显示文摘The density functional theory (DFT) and periodic slab model were used to get information concerning the adsorption of HCHO on the FeO(100) surface. A preferred η2-(C,O)-di-σ four-membered ring adsorption conformation on the Fe-top site was found to be the most favorable structure with the predicted adsorption energy of 210.7 kJ/mol. The analysis of density of states, Mulliken population, and vibrational frequencies before and after adsorption showed clear weakening of the carbonyl bond, and high sp3 character on the carbon atom. | Lingling Wang, Wenkai Chen Department of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China | 2010 | Journal of Natural Gas Chemistry2010，19，1： | 3 |
| 2 | Nonfragile guaranteed cost control for Delta operator-formulated uncertain time-delay systems显示文摘With consideration that the controller parameters may vary from the designed value when the controller is realized, based on Lyapunov stability theory, a design method of nonfragile guaranteed cost control for a class of Delta operator-formulated uncertain time-delay systems is studied. A sufficient condition for the existence of the nonfragile guaranteed cost controller is given. A numeric example is then given to illustrate the effectiveness and the feasibility of the designed method. The results show that even if the parameters of the designed controller are of variations, the closed-loop system is still asymptotically stable and the super value of the cost function can also be obtained, while the closed-loop system will be unstable if the variations of the controller parameters are not considered when the controller is designed. The nonfragile guaranteed cost controller derived from the traditional shift operator method may cause the closed-loop system to be unstable, while the nonfragile guaranteed cost controller based on Delta operator method can avoid the unstable problem of the closed-loop system. | Ruiquan LIN, Silian CHEN, Xuwei DING (College of Electrical Engineering and Automation, Fuzhou University, Fuzhou Fujian 350108, China) | 2010 | 控制理论与应用(英文版)2010，8，2： | 2 |
| 3 | EXPONENTIAL ESTIMATE OF SOLUTION TO STOCHASTIC FUNCTIONAL DIFFERENTIAL EQUATIONS WITH INFINITE DELAY显示文摘In this paper, by the Burkholder-Davis-Gundy inequality and It formula, the exponential estimate of the solution to stochastic functional differential equations with infinite delay is established in the phase space BC((-∞,0];Rd). Furthermore, the sample Lyapunov exponent of the solution is obtained, which is less than a positive constant 2√K + 65K. Moreover, a pth moment of the solution is studied. | Fengying Wei (College of Math. and Computer Sci., Fuzhou University, Fuzhou 350108) Ke Wang (Dept. of Math., Harbin Institute of Technology, Weihai 264209, Shandong) | 2010 | Annals of Differential Equations2010，26，3： | 2 |
| 4 | The stationarity and invertibility of a class of nonlinear ARMA models显示文摘We investigate some probabilistic properties of a new class of nonlinear time series models. A sufficient condition for the existence of a unique causal, strictly and weakly stationary solution is derived. To understand the proposed models better, we further discuss the moment structure and obtain some Yule-Walker difference equations for the second and third order cumulants, which can also be used for identification purpose. A sufficient condition for invertibility is also provided. | CHEN DanQing1,2 & WANG HaiBin2 1Department of Mathematics and Physics, Fujian University of Technology, Fuzhou 350108, China 2 School of Mathematical Sciences, Xiamen University, Xiamen 361005, China | 2011 | Science China Mathematics2011，54，3： | 1 |
| 5 | Self-maps of p-local infinite projective spaces显示文摘Denote by Z (p) (resp.Z p ) the p localization (resp.p completion) of Z.Then we have the canonical inclusion Z (p) → Z p .Let S 2n-1 (p) be the p-local (2n-1)-sphere and let B 2n (p) be a connected p-local space satisfying S 2n-1 (p) ~= ΩB 2n (p) ;then H - (B 2n (p) ,Z (p) ) = Z (p) [u] with |u| = 2n.Define the degree of a self-map f of B 2n (p) to be k ∈ Z (p) such that f *(u) = ku.Using the theory of integer-valued polynomials we show that there exists a self-map of B 2n (p) of degree k if and only if k is an n-th power in Z p . | LIN XianZu 1,2 1 College of Mathematics and Computer Science,Fujian Normal University,Fuzhou 350108,China 2 Institute of Mathematics,Academy of Mathematics and Systems Science,Beijing 100190,China | 2012 | Science China Mathematics2012，55，4： | 1 |
| 6 | Effect of Duty Cycle on Properties of Pulse-electro-deposited SnS:Ag Thin Films显示文摘SnS∶Ag thin films were deposited on ITO glasses by pulse electro-deposition. By studying the effect of duty cycle on the properties of SnS∶Ag thin films, the optimum off-time(toff) is obtained to be 5 s, namely, the optimal duty cycle is about 67%. The primary phase of SnS∶Ag films deposited on optimum parameters condition is SnS compound with good crystallization, and the films prefer to grow towards (111) plane. The films are dense, smooth and uniform with good microstructure, and the grains in the films are densely packed together, and their direct bandgap is about 1.40 eV. In addition, the bandgap of the films first rises and then drops with the increase of the duty cycle. | LU Peimin1, JIA Hongjie1, YANG Yongli2, CHENG Shuying1 (1. College of Physics and Information Engineering, Institute of Micro-Nano Devices & Solar Cells, Fuzhou University, Fuzhou 350108, CHN 2. Key Laboratory of Analysis and Detection Technology for Food Safety of the Ministry of Education, Department of Chemistry, Fuzhou University, Fuzhou 350108, CHN) | 2010 | Semiconductor Photonics and Technology2010，16，4： | 1 |
| 7 | A lumped mass finite element method for vibration analysis of elastic plate-plate structures显示文摘The fully discrete lumped mass finite element method is proposed for vibration analysis of elastic plate-plate structures.In the space directions,the longitudinal displacements on plates are discretized by conforming linear elements,and the transverse displacements are discretized by the Morley element.By means of the second order central difference for discretizing the time derivative and the technique of lumped masses,a fully discrete lumped mass finite element method is obtained,and two approaches to choosing the initial functions are also introduced.The error analysis for the method in the energy norm is established,and some numerical examples are included to validate the theoretical analysis. | LAI JunJiang1,HUANG JianGuo2,3,& SHI ZhongCi4 1Department of Mathematics,Minjiang University,Fuzhou 350108,China 2Department of Mathematics,Shanghai Jiao Tong University,Shanghai 200240,China 3Division of Computational Science,E-Institute of Shanghai Universities,Shanghai Normal University,Shanghai 200234,China 4Institute of Computational Mathematics,Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100190,China | 2010 | Science China Mathematics2010，53，6： | 1 |
| 8 | Comparative Several Extraction Methods of Genomic DNA from Tripterygium wilfordii Hook. f. Leaves显示文摘 | XING Jian-hong1 LIU Xi-hua1 PANG Shuo-quan1 LIANG Yi-chi2 1. Department of Chemical and Biological Engineering of San Ming University Sanming Fujian 365004 China 2. Fujian University of Traditional Chinese Medicine Fuzhou Fujian 350108 China | 2010 | Medicinal Plant2010，，03： | 1 |
| 9 | A global rigidity theorem for weakly Landsberg manifolds显示文摘In this paper we study a global rigidity property for weakly Landsberg manifolds and prove that a closed weakly Landsberg manifold with the negative flag curvature must be Riemannian. | Bing-ye WU Department of Mathematics, Minjiang University, Fuzhou 350108, China | 2007 | Science China Mathematics2007，50，5： | 1 |
| 10 | PERMANENCE AND GLOBAL STABILITY OF POSITIVE SOLUTIONS TO TWO PREDATORSONE PREY SYSTEM WITH A DISCRETE TIME RATIO-DEPENDENT显示文摘A three-species ratio-dependent predator-prey discrete model is studied.As a result,sufficient conditions which guarantee the permanence of the model are obtained. In addition,by constructing a suitable Lyapunov function,we derive some sufficient conditions,which ensure that the positive solution of the model is stable and attracts all positive solutions.To illustrate the feasibility of the main results,we introduce an example with corresponding numeric simulations. | Wu Liping (College of Math.and Computer Science,Fuzhou University,Fuzhou 350002 Dept.of Math.,Minjiang University,Fuzhou 350108) | 2008 | Annals of Differential Equations2008，24，1： | 0 |
| 11 | EXISTENCE AND EXPONENTIAL STABILITY OF ALMOST PERIODIC SOLUTIONS TO BAM RECURRENT NEURAL NETWORKS WITH TRANSMISSION DELAYS AND CONTINUOUSLY DISTRIBUTED DELAYS显示文摘In this paper,a class of bidirectional associative memory(BAM) recurrent neural networks with delays are studied.By a fixed point theorem and a Lyapunov functional,some new sufficient conditions for the existence,uniqueness and global exponential stability of the almost periodic solutions are established.These conditions are easy to be verified and our results complement the previous known results. | Junyan Xu College of Math.and Computer Science,Fuzhou University,Fuzhou 350108 | 2012 | Annals of Differential Equations2012，28，4： | 0 |
| 12 | Subcategories of fixed points of mutations in root categories with type _(n-1)显示文摘For any n 3, let R(n) denote the root category of finite-dimensional nilpotent representations of cyclic quiver with n vertices. In the present paper, we prove that R(n-1) is triangle-equivalent to the subcategory of fixed points of certain left (or right) mutation in R(n). As an application, it is shown that the affine Kac-Moody algebra of type n-2 is isomorphic to a Lie subalgebra of the Kac-Moody algebra of type n-1. | LIN YaNan1 & TANG LiDan1,2,1School of Mathematical Sciences, Xiamen University, Xiamen 361005, China 2College of Mathematics and Computer Science, Fuzhou University, Fuzhou 350108, China | 2010 | Science China Mathematics2010，53，12： | 0 |
| 13 | Spatiotemporal expression of Pax genes in amphioxus: Insights into Pax-related organogenesis and evolution显示文摘The expression of four AmphiPax genes in 16 developmental stages and different organs in amphioxus (Branchiostoma belcheri) was investigated, finding those genes expressed throughout amphioxus life with temporal-specific (especially during embryogenesis and metamorphosis) and spatial-specific patterns. This study suggests that duplicated Pax genes in vertebrates might maintain most of their ancestral functions and also expand their expression patterns after the divergence of protochordates and vertebrates. | CHEN Lu1, ZHANG QiuJing1,2, WANG Wei1 & WANG YiQuan1 1Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China 2College of Life Sciences, Fujian Normal University, Fuzhou 350108, China | 2010 | Science China(Life Sciences)2010，53，8： | 0 |
| 14 | EXISTENCE AND UNIQUENESS OF ALMOST PERIODIC SOLUTION TO A SECOND ORDER NONLINEAR DIFFERENTIAL EQUATION显示文摘In this paper, the existence of almost periodic solution to a second order nonlinear equation is investigated by contraction mapping principle under some conditions. It ought to be noted that using Schauder fixed point theorem to discuss such a problem will cause a failure. | Huiqin Xie (College of Math. and Computer Science, Fuzhou University, Fuzhou 350108) | 2010 | Annals of Differential Equations2010，26，4： | 0 |
| 15 | ON THE PERSISTENT PROPERTY OF A DELAYED NON-AUTONOMOUS SCHOENER MODEL WITH FEEDBACK CONTROL显示文摘We study a delayed non-autonomous Schoener model with feedback control, which was proposed by Qiming Liu, Rui Xu and Pinghua Yang [8]. By applying a differential inequality and some analysis technique, we show that under some suitable assumptions, the feedback control variable has no influence on the persistent property of the system. Our result improves the existing ones. | Na Zhang , Fengde Chen, Yuqing Ruan, Huitao Yang (College of Math. and Computer Science, Fuzhou University, Fuzhou 350108) | 2011 | Annals of Differential Equations2011，27，2： | 0 |
| 16 | STABILITY OF STOCHASTIC DIFFERENTIAL EQUATIONS WITH UNBOUNDED DELAY显示文摘In this paper,we obtain suffcient conditions for the stability in p-th moment of the analytical solutions and the mean square stability of a stochastic differential equation with unbounded delay proposed in [6,10] using the explicit Euler method. | Zhencheng Fan (Dept. of Math.,Minjiang University,Fuzhou 350108 ) Yu Xiao (Dept. of Math.,Harbin Institute of Technology,Harbin 150001) | 2009 | Annals of Differential Equations2009，25，3： | 0 |
| 17 | CONTINUOUS DEPENDENCE ON VELOCITY FOR THE BACKWARD DYNAMO EQUATION ON AN EXTERIOR DOMAIN显示文摘In this paper we study solutions to a forward Dynamo equation depending continuously on the velocity on an exterior domain,using Logarithmic Convexity Methods.We obtain some more weaker conditions by introducing the unbounded domain. | Shouying Huang,Yanhong Zhang College of Math.and Computer Science,Fuzhou University,Fuzhou 350108, | 2011 | Annals of Differential Equations2011，27，4： | 0 |
| 18 | STABILITY OF SOME KIND OF STOCHASTIC DIFFERENTIAL EQUATION显示文摘In this paper,a kind of stochastic differential equation is investigated and the almost sure exponential stability of the equation is obtained using Gronwall's inequality.Further,we also give other noise intensity function to keep the stability of the system. | Wei Liu (Dept.of Math.,Public Security Marine Police Academy,Ningbo 315000,Zhejiang) Fengying Wei (College of Math.and Computer Sci.,Fuzhou University,Fuzhou 350108) | 2011 | Annals of Differential Equations2011，27，4： | 0 |
| 19 | DYNAMICS OF RELATIVISTIC FLUID FOR COMPRESSIBLE GAS显示文摘In this paper the relativistic fluid dynamics for compressible gas is studied.We show that the strict convexity of the negative thermodynamical entropy preserves invariant under the Lorentz transformation if and only if the local speed of sound in this gas is strictly less than that of light in the vacuum.A symmetric form for the equations of relativistic hydrodynamics is presented,and thus the local classical solutions to these equations can be deduced.At last,the non-relativistic limits of these local classical solutions are showed to be the classical solutions to the Euler equations for polytropic gas. | Yipeng Shi (State Key Laboratory for Turbulence and Complex Systems,College of Engineering,Peking University,Beijing 100871) Qiyan Shi (Dept.of Math.,Fuzhou University,Fuzhou 350108) | 2011 | Annals of Differential Equations2011，27，4： | 0 |
| 20 | POSITIVE SOLUTION TO THREE-ORDER BOUNDARY VALUE PROBLEM WITH DEPENDENCE ON THE FIRST ORDER DERIVATIVE显示文摘By cone theory and the fixed point index,we study the existence of positive solutions to a three-order boundary value problem with dependence on the first order derivative. | Yanhong Zhang,Yingshou Huang (College of Math.and Computer Science,Fuzhou University,Fuzhou 350108) | 2011 | Annals of Differential Equations2011，27，4： | 0 |
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