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wuhan university Journal of Natural Sciences 2003年第2A期8卷 405-408页

作者： Li Zhan, Xu Ji-shengSchool of Electronic Information, wuhan university,{2., Hubei, china Sch. of Electron. Info. Wuhan Univ. Wuhan 430072 China

To solve the arrearage problem that puzzled most of the mobile corporations, we propose an approach to forecast and evaluate the credits for mobile clients, devising a method that is of the coalescence of genetic algorithm and multidimensional distinguishing model. In the end of this paper, a result of a testing application in Zhuhai Branch, GMCC was provided. The precision of the forecasting and evaluation of the client’s credit is near 90%. This study is very significant to the mobile communication corporation at all levels. The popularization of the techniques and the result would produce great benefits of both society and economy.

关键词： Key Words mobile communications credit evaluation genetic algorithms multidimensional distinguishing model behavior attributes

Reflective State Pattern with Dynamic Constructiveness

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wuhan university Journal of Natural Sciences 2001年第Z1期6卷 191-199页

作者： Jiang Hong 1, He Ke\|qing 1, Ying Shi 2.1.College of Computer,wuhan university,wuhan 430072,china 2.State Key Laboratory of Software Engineering,wuhan university,wuhan 430072,china College of Computer Wuhan University Wuhan China State Key Laboratory of Software Engineering Wuhan University Wuhan China

After discussing the reflective method of structure and behavior in the State design pattern based on Role Object pattern and the Reflective pattern of software architecture, this paper proposes a reflective state pattern with dynamic constructiveness. This paper explains the meta level and the base level, which are two levels of this pattern, and specifies the relation of two levels by using Meta Object Protocol (MOP). Then it discusses mechanism of interception and reification for reflecting base object from Meta object. Finally this paper gives an example of network server for applying the Reflective State pattern.

关键词： role model state design pattern reflective pattern role object pattern

Effect of Limestone Powder on Microstructure of Concrete

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Journal of wuhan university of Technology(Materials Science) 2010年第2期25卷 328-331页

作者：刘数华 State Key Laboratory of Water Resource and Hydropower Engineering Science Wuhan University

The effect of limestone powder on microstructure of concrete was studied by using mercury intrusion porosimetry （MIP）, backscattering scanning electron（BSE）, scanning electron mi- croscopy （SEM） and X-ray diffraction （XRD） techniques. The experimental results show that the compressive strength of concrete containing 100 kg/m3 limestone powder can meet the strength requirement. Limestone powder has not pozzolanic activity; it is still unhydrated at the age of 2. days. But its filling effect can make the paste matrix and the interfacial transition zone between matrix and aggregate denser, which will improve the performance of concrete.

关键词： concrete limestone powder microstructure filling effect hydration characteristic

Flexural-tensile Properties of Layered Steel Fiber Reinforced Rubber Concrete

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Journal of wuhan university of Technology(Materials Science) 2009年第5期24卷 846-848页

作者：易贤仁 School of Sciences Wuhan University of Technology

Layered steel fiber reinforced rubber concrete （LSFRRC）, a new type of pavement concrete based on the requirements of national standard were experimentally researched. The different properties of flexural-tensile strength from plain concrete （PC）, rubber concrete （RC）, layered steel fiber reinforced concrete （LSFRC） and LSFRRC were presented. Experimental results show that the tensile strength of LSFRRC is improved by 4.12. compared with PC, by 13.75% compared with RC. The load-deflection curve on flexural-tensile propertiesis put forward. The flexural-tensile toughness index I10 of LSFRRC is improved 10.32.times compared with PC.

关键词： RC LSFRRC flexural-tensile strength load-deflection curve experimental re-search

COMPARISON OF RESULTS ON CAVITATION INCEPTION FOR CHECKING THE SCALE EFFECTS

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Journal of Hydrodynamics 2004年第3期16卷 308-311页

作者： YANGZhi-ming DINGYu-jian wuhanuniversity Wuhan430072China

Results on scale effects for cavitation inception at small and large Reynoldsnumbers were compared, respectively. The empirical relation for scale effects suggested by *** Keller was checked, which showed that the comparison of results on cavitation inception atsmall Reynolds numbers below 1 x 10~6 was confirmed very well, but at larger Reynolds numbers abovethe magnitude of 1 x 10~6 was not clearly confirmed.

关键词： cavitation inception scale effects reynolds numbers

Adaptive quasi-likelihood estimate in generalized linear models

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Science china Mathematics 2005年第6期48卷 829-846页

作者： CHEN Xia & CHEN Xiru School of Mathematics and Statistics, wuhan university,{2., china Graduate School, Chinese Academy of Science, Beijing 100049, china School of Mathematics and Statistics Wuhan University Wuhan China Graduate School Chinese Academy of Science Beijing China

This paper gives a thorough theoretical treatment on the adaptive quasilikelihood estimate of the parameters in the generalized linear models. The unknown covariance matrix of the response variable is estimated by the sample. It is shown that the adaptive estimator defined in this paper is asymptotically most efficient in the sense that it is asymptotic normal, and the covariance matrix of the limit distribution coincides with the one for the quasi-likelihood estimator for the case that the covariance matrix of the response variable is completely known.

关键词： generalized linear models, quasi likelihood estimate, adaptive estimate.

Equivalence problem for Bishop surfaces

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Science china Mathematics 2010年第3期53卷 687-700页

作者： HUANG XiaoJun 1, & YIN WanKe 2.1 Department of Mathematics, Rutgers university, New Brunswick, NJ 08902. USA 2.School of Mathematics and Statistics, wuhan university, wuhan 430072, china Department of Mathematics Rutgers University New Brunswick USA School of Mathematics and Statistics Wuhan University Wuhan China

The paper has two parts. We first briefly survey recent studies on the equivalence problem for real submanifolds in a complex space under the action of biholomorphic transformations. We will mainly focus on some of the recent studies of Bishop surfaces, which, in particular, includes the work of the authors. In the second part of the paper, we apply the general theory developed by the authors to explicitly classify an algebraic family of Bishop surfaces with a vanishing Bishop invariant. More precisely, we let M be a real submanifold of C 2.defined by an equation of the form w = zz + 2.e(z s + az s+1 ) with s≥ 3 and a a complex parameter. We will prove in the second part of the paper that for s≥ 4 two such surfaces are holomorphically equivalent if and only if the parameter differs by a certain rotation. When s = 3, we show that surfaces of this type with two different real parameters are not holomorphically equivalent.

关键词： equivalence problem Bishop surface Chern-Moser theory elliptic and hyperbolic complex tangents normal form and modular space

Exsolution of ilmenite and Cr-Ti magnetite from olivine of garnet-wehrlite

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Science china Earth Sciences 2005年第9期48卷 1368-1376页

作者： LIU Xiangwen1,2. JIN Zhenmin1,3, QU Jing2.& WANG Lu2.1. State Key Laboratory of Geological Processes and Mineral Resources, china university of Geosciences, {2. 430074, china 2. Graduate School of china university of Geosciences, {2. 430074, china 3. Faculty of Earth Sciences, china university of Geosciences, {2. 430074, china State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan China Graduate School of china university of Geosciences Wuhan China Faculty of Earth Sciences China University of Geosciences Wuhan China

Exsolution of rod-like ilmenite (Ilm) and Cr-Ti magnetite (Mt) have been found in olivine of garnet-wehrlite from the core of Chinese Continental Sciences Drilling (CCSD). Their composition, morphology, crystal structure and their topotaxies with host olivine have been studied in detail by the transmission electron microscopy (TEM) and electron probe microanaly- sis (EPMA) technique. It shows that rod-like Ilm exsolution reported in this paper has similar characteristic with that of Alpe Arami olivine, while Cr-Ti magnetite exsolution mentioned in this paper has large discrepancy with chromite exsolution in Alpe Arami olivine. These observations suggest that both of the exsolutions found in this paper should be solid solution phases in β-olivine at their first period, then experiencing decomposition of solid solution and therefore forming Ilm and Cr-Ti magnetite exsolution with the pressure decreasing. So, this garnet-wehrlite perhaps had been ever located in mantle transition zone with a minimum depth of 300 km.

关键词： garnet-wehrlite, ilmenite, magnetite, exsolution, CCSD.

Recognition of 3-D Aircrafts by Fourier Descriptors with Fast and Efficient Library Search

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wuhan university Journal of Natural Sciences 1998年第2期3卷 169-174页

作者： Zhao Hengzhuo, Wang Yanping(College of Electronic Information, wuhan university,{2., china) wuhan university College of Electronic Information Wuhan China (GRID:grid.49470.3e) (ISNI:***)

Fourier descriptors are used as features for 3-D aircraft classification and pose determination from a 2.D image recorded at an arbitrary viewing angle. By the feature ranking of Fourier descriptors, a classification procedure based on the fast nearest neighbour rule is proposed to save the matching time of an unknown aircraft with a partial library search. The testing results of some typical examples indicate this method is generally applicable and efficient in 3-D aircraft recognition.

关键词： pattern recognition Fourier descriptors nearest neighbour rule feature rank weighting factor distance bound

Numerical simulations and experimental investigations on transverse effects of two-wave mixing in a photovoltaic photorefractive crystal

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Science china(Physics,Mechanics & Astronomy) 2010年第5期53卷 856-863页

作者： CAI Xin1,2.LIU JinSong1 & WANG ShengLie1 1 wuhan National Laboratory for Optoelectronics,School of Optoelectronic Science and Engineering,Huazhong university of Science and Technology,wuhan 430074,china 2.School of Science,wuhan university of Technology,wuhan 430070,china wuhan National Laboratory for Optoelectronics School of Optoelectronic Science and Engineering Huazhong University of Science and Technology Wuhan China School of Science Wuhan University of Technology Wuhan China

The transverse effects of two Gauss waves mixing in a photovoltaic photorefractive crystal,i.e.,the dynamical evolutions of signal beam with different parameters,are traced numerically and *** the one-dimensional numerical simulations and two-dimensional experimental investigations show that the self-focusing effect of signal beam becomes more obvious as the intensity of pump beam and the angle between the signal and pump beams *** accordance with these results,the state of two Gaussian waves mixing is controllable.

关键词： numerical simulation experimental investigation two-wave mixing transverse effects Gaussian distribution