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| 1 | Ambient noise spectral properties in the north area of Xisha显示文摘Ambient noise is very important in the prediction system of a sonar performance, because it determines the detection ranges always in a passive sonar and usually in an active sonar. In the uncertainty issue for the sonar performance, it is necessary to know this factor's statistical characteristics that are only obtained by data processing from the underwater ambient noise measurements. Broad-band ambient noise signals from 16 hydrophones were amplified and recorded for 2 min every 1 h. The results show that the ambient noise is essentially depth independent. The cross correlation of the ambient noise levels(1, 6 and 12 h average) with a wind speed is presented. It was found that the correlation is excellent on the upper frequency band and the noise levels correlate better with high wind speed than with low wind speed. | DA Lianglong WANG Chao HAN Mei ZHANG Lin | 2014 | Acta Oceanologica Sinica2014，33，12： | 6 |
| 2 | STABILITY OF THE SOLUTIONS TO STOCHASTIC FUNCTIONAL DIFFERENTIAL EQUATIONS WITH INFINITE DELAY显示文摘In this paper,we obtain the stability of solutions to stochastic functional differential equations with infinite delay at phase space BC((-∞,0];Rd),under non-Lipschitz condition with Lipschitz condition being considered as a special case and a weakened linear growth condition by means of the corollary of Bihari inequality. | Chaohui Yue1,2,Lianglong Wang1 (1. School of Math. Sciences,Anhui University,Hefei 230039 2. School of Sciences,Anhui Agricultural University,Hefei 230036) | 2009 | Annals of Differential Equations2009，25，2： | 3 |
| 3 | Numerical simulation of the seismic behavior of self-centering steel beam-column connections with bottom flange friction devices显示文摘A new type of steel moment resisting frame with bottom ? ange friction devices (BFFDs) has been developed to provide self-centering capacity and energy dissipation, and to reduce permanent deformations under earthquakes. This paper presents a numerical simulation of self-centering beam-column connections with BFFDs, in which the gap opening /closing at the beam-column interfaces is simulated by using pairs of zero-length elements with compression-only material properties, and the energy dissipation due to friction is simulated by using truss elements with specified hysteretic behavior. In particular, the effect of the friction bolt bearing against the slotted plate in the BFFDs was modeled, so that the increase in lateral force and the loss of friction force due to the bolt bearing could be taken into account. Parallel elastic-perfectly plastic gap (ElasticPPGap) materials in the Open System for Earthquake Engineering Simulation (OpenSees) were used with predef ined gaps to specify the sequence that each bolt went into the bearing and the corresponding increase in bending stiffness. The MinMax material in OpenSees is used to specify the minimum and maximum values of strains of the ElasticPPGap materials. To consider the loss of friction force due to bolt bearing, a number of parallel hysteretic materials were used, and the failure of these materials in sequence simulated the gradual loss of friction force. Analysis results obtained by using the proposed numerical model are discussed and compared with the test results under cyclic loadings and the seismic loading, respectively. | Guo Tong Song Lianglong Zhang Guodong | 2011 | Earthquake Engineering and Engineering Vibration2011，10，2： | 3 |
| 4 | MULTIPLE POSITIVE SOLUTIONS FOR SINGULAR BOUNDARY VALUE PROBLEMS WITH p-LAPLACIAN显示文摘This paper is concerned with the existence of positive solutions to singular boundary value problems of functional differential equations with p-Laplacian. Under the suitable conditions,the existence of three positive solutions is esta- blished by using an abstract fixed point theorem. | Wu Zheng Wang Lianglong | 2007 | Annals of Differential Equations2007，23，4： | 2 |
| 5 | MULTIPLE PERIODIC SOLUTIONS TO SECOND ORDER FUNCTIONAL DIFFERENTIAL EQUATION WITH INFINITE DELAY显示文摘This paper is concerned with the existence of positive periodic solutions to a second order functional differential equation with infinite delay.Under the appropriate conditions,some existence and multiplicity of positive periodic solutions are derived by an abstract fixed-point theorem. | Lili Gao (Dept.of Math.and Physics,Bengbu College,Bengbu 233000,Anhui) Lianglong Wang (School of Math.and Computing Science,Anhui University,Hefei 230039) | 2012 | Annals of Differential Equations2012，28，1： | 2 |
| 6 | MULTIPLE POSITIVE SOLUTIONS OF BOUNDARY VALUE PROBLEM FOR A SYSTEM OF NONLINEAR THIRD ORDER DIFFERENTIAL EQUATIONS显示文摘This paper is concerned with the boundary value problem for a system of nonlinear third order differential equations. Under some suitable conditions, the existence and multiplicity of the positive solutions are established by using abstract fixed-point theorems. | Hu Ling Wang Lianglong (School of Math, and Computation Sciences, Anhui University, Hefei 230039 Dept. of Math., Huangshan University, Huangshan 245000) | 2006 | Annals of Differential Equations2006，22，3： | 2 |
| 7 | The rapid uncertainty prediction of the ocean-acoustic coupled model显示文摘 | CUI Baolong DA Lianglong GUO Wuhong ZHAO Jianxin | 2018 | Chinese Journal of Acoustics2018，37，4： | 2 |
| 8 | Capturing uncertainties of the underwater acoustic environment based on an ocean-acoustic coupled model显示文摘Considering the uncertain effects of temporal and spatial changes in the marine environment on the underwater acoustic environment,we established an ocean-acoustic coupled numerical model and performed a parallel calculation.This model incorporated acoustic calculations into the dynamic ocean,thereby achieving a dynamic forecasting and assessment of the acoustic environment.Furthermore,we adopted the ensemble prediction method to predict the vertical structure of temperature in a classic cross-section,the sound speed of the cross-section of the investigated sea area,and transmission losses.We gave the prediction errors of the sound speed profile as well as the 90%probability interval of transmission losses and the uncertainty histograms of the sound speeds,transmission losses,and sonar ranges at different depths and frequencies.The results reflected the influence of marine temporal and spacial variations on the uncertainties of the underwater acoustic environment,and the results also quantified the uncertainties of the underwater acoustic environment parameters.The experimental results indicate that the method used in this study is able to delineate and quantify the uncertainties of the underwater acoustic environment caused by marine dynamic changes. | DA Lianglong GUO Wuhong ZHAO Jianxin FAN Peiqin | 2015 | Chinese Journal of Acoustics2015，34，3： | 2 |
| 9 | Controllability of abstract neutral functional differential systems with infinite delay显示文摘 | Wang Lianglong Wang Zhicheng | 2002 | Dynamics of Continuous Discrete and Impulsive Systems Series B:Applications&Algorithms2002，9，2： | 1 |
| 10 | Different active sites in hydrodenitrogenation as determined by the influence of the support and fluorination显示文摘 | Prins R | 2003 | Applied Catalysis A:General2003，250，： | 1 |
| 11 | Positive periodic solutions of periodic retarded functional differential equations 显示文摘 | Lianglong Wang Zhicheng Wang | 2003 | Applied Math E - Notes2003，3，2： | 1 |
| 12 | Blockade of NF-κB by pyrrolidine dithiocarbamate attenuates myocardial inflammatory response and ventricular dysfunction following coronary microembolization induced by homologous microthrombi in rats显示文摘 | Shumei Li Shishun Zhong Kai Zeng Yukun Luo Feilong Zhang Xudong Sun Lianglong Chen | 2010 | Basic Research in Cardiology2010，，1： | 1 |
| 13 | Periodic Solutions Of Neutral Functional Differential Equations 显示文摘 | WANG Lianglong WANG Zhicheng ZOU Xingfu | 2002 | J London Math Soc2002，65，2： | 1 |
| 14 | Controllability of Abstract Neutral Functional Differential Systems with Infinite Delay 显示文摘 | WANG Lianglong WANG Zhicheng | 2002 | Dynamics of Continuous Discrete and Impulsive Systems: Series B (Applications Algorithms)2002，9，1： | 1 |
| 15 | The Effect of Chro- mium on Sulfur Resistance of Pd/HY-Al2O3 Catalysts for Aromatic Hydrogenation显示文摘 | Linjie Hu Guofu Xia Lianglong Qu | 2001 | Journal of Catalysis2001，202，： | 1 |
| 16 | Monotone Iterative Techniques for Parameterized BVPs of Abstract Semilinear Evolutions Equations显示文摘 | Wang Zhicheng | 2003 | Computers and Mathematics with Applications2003，46，89： | 1 |
| 17 | The effect of chro mium on sulfur resistance of Pd/H-Al2O3 catalysts for aro matic hydrogenation显示文摘 | Hu Linjie Xia Guofu Qu Lianglong | 2001 | Journal of Catalysis2001，202，2： | 1 |
| 18 | Multiple positive solutions of boundary value problems for systems of nonlinear second order dierential equations显示文摘 | HU LING WANG LIANGLONG | 2007 | J Math Anal Appl2007，335，2： | 1 |
| 19 | MAS NMR, TPR and TEM studies of the interaction of NiMo with alumina and silica- alumina supports显示文摘 | Qu Lianglong Zhang Weiping | 2003 | Journal of Catalysis2003，215，： | 1 |
| 20 | Dynamical Behavior of a Stochastic Ratio-dependent Predator-prey System显示文摘 | Wu Zheng Huang Hao Wang Lianglong | 2012 | Journal of Applied Mathematics2012，，： | 1 |
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