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被引量:138H指数:7SCI-EXPANDED: 26EI: 19北大核心: 9CSCD: 7

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47 条 记 录,以下是 1-30

基于ADO.NET的多媒体数据库存取技术的研究
《计算机应用》李用江  出版年:2003
文中详细地介绍了ADO.NET技术,提出了一种切实可行的存取多媒体数据库中的大容量数据的解决方法,即通过直接调用执行SQL语言的存储过程将多媒体数据存储到数据库中,并从数据库中取出数据进行处理。
关键词:C#.NET  ADO.NET  多媒体数据库  图像  存储过程  被引量:16
Nonresonant Double Hopf Bifurcation in Toxic Phytoplankton-Zooplankton Model with Delay
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOSYuan, Rui Jiang, Weihua Wang, Yong  出版年:2017
This paper investigates a toxic phytoplankton-zooplankton model with Michaelis-Menten type phytoplankton harvesting. The model has rich dynamical behaviors. It undergoes transcritical, saddle-node, fold, Hopf, fold-Hopf ...
Interval oscillation criteria for second-order forced impulsive differential equations with mixed nonlinearities
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONSGuo, Zhonghai Zhou, Xiaoliang Ge, Weigao  出版年:2011
In this paper, by arithmetic-geometric mean inequality and Riccati transformation, interval oscillation criteria are established for second-order forced impulsive differential equation with mixed nonlinearities of the fo...
分布式应用程序中数据访问技术的剖析
《计算机工程与设计》李用江  出版年:2005
阐述了在开发软件系统的过程中两种分布式应用程序运行时出现的问题,分析研究了数据库服务器上的进程以及客户和服务器两端操作系统上的应用进程,找出了问题的原因所在,提出了多种切实可行的解决方法,并比较了两种分布式应用程序使用A...
关键词:进程  ADO  Net  窗体应用程序  Web应用程序  C#  .Net  被引量:9
基于优势关系下的协调近似空间(续)
《计算机科学》徐伟华 张晓燕 苏雅娟 张文修  出版年:2007
在基于优势关系下的不协调目标信息系统中引入了分布和最大分布协调近似空间的概念,并证明了在优势关系下不协调目标信息系统也可以转化为一个分布以及最大分布协调近似空间,这更加方便了基于优势关系下不协调目标信息系统的研究,从而进...
关键词:粗糙集  信息系统  分布约简  最大分布约简  协调近似空间  被引量:8
Some new retarded nonlinear integral inequalities and their applications in differential-integral equations
APPLIED MATHEMATICS AND COMPUTATIONWang, Wu-Sheng Zhou, Xiaoliang Guo, Zhonghai  出版年:2012
In this paper, we discuss some new retarded nonlinear Gronwall-Bellman-Pachpatte integral inequalities and give upper bound estimation of the unknown function by integral inequality technique. Our results generalize thos...
Oscillatory behavior of higher order nonlinear neutral forced differential equations with oscillating coefficients
COMPUTERS & MATHEMATICS WITH APPLICATIONSZhou, Xiaoliang Yu, Rong  出版年:2008
In this paper, the higher order nonlinear neutral forced differential equations of the form [x(t = p(t)x(tau(t))]((n)) + Sigma(m)(i=1)q(i)(t)f(i)(x(sigma(i)(t))) = s(t), t >= t(0). where n, m is an element of N, n >= 2 a...
序信息系统的知识粗糙熵与粗集粗糙熵
《计算机工程与应用》张晓燕 徐伟华  出版年:2007
在序信息系统中引入了知识粗糙熵和粗集粗糙熵的概念,得到了它们的有关性质,并证明了二者都随着知识确定程度的增强而单调下降的结论,从而给出了序信息系统的信息解释。进一步通过讨论它们之间的联系说明了粗集的粗糙熵可以更精确地度量...
关键词:粗糙集  序信息系统  知识粗糙熵  粗糙度  被引量:7
Oscillatory and asymptotic properties of higher order nonlinear neutral difference equations with oscillating coefficients
APPLIED MATHEMATICS LETTERSZhou, Xiaoliang  出版年:2008
In this work, the oscillatory and asymptotic properties of higher order nonlinear neutral difference equations with oscillating coefficients are studied. Some new necessary and sufficient criteria, which improve several ...
Some inequalities for a LNQD sequence with applications
JOURNAL OF INEQUALITIES AND APPLICATIONSLi, Yongming Guo, Jianhua Li, Naiyi  出版年:2012
In this paper, some inequalities for a linearly negative quadrant dependent (LNQD) sequence are obtained. As their application, the asymptotic normality of the weight function estimate for a regression function is establ...
数据库中大文本数据存取方法的探讨
《计算机系统应用》李用江  出版年:2004
在构建分布式应用系统时,存取数据库中大文本数据方法的选择是非常重要的。本文从软件开发的实际出发,提出了几种实用技巧,实现了对数据库中大容量数据的直接存取。
关键词:数据库  数据存取  ADO.NET技术  VB.NET  多媒体数据  被引量:6
Interval Oscillation Criteria of Second Order Mixed Nonlinear Impulsive Differential Equations with Delay
ABSTRACT AND APPLIED ANALYSISGuo, Zhonghai Zhou, Xiaoliang Wang, Wu-Sheng  出版年:2012
We study the following second order mixed nonlinear impulsive differential equations with delay (r(t)Phi(alpha)(x')(t)))' + p(0)(t)Phi(alpha)(x)(t)) + Sigma(n)(i=1) p(i)(t)Phi(beta i)(x(t-sigma)) = e(t), t >= t(0), t not...
A generalized Gronwall-Bellman-Ou-Iang type inequality for discontinuous functions and applications to BVP
APPLIED MATHEMATICS AND COMPUTATIONWang, Wu-Sheng Zhou, Xiaoliang  出版年:2010
In this paper we investigate a generalized Gronwall-Bellman-Ou-Iang type inequality for piecewise continuous functions. By studying the unknown function in different continuous regions Omega(kj) of Omega, we give the com...
On the exponential diophantine equation (<i>m</i><SUP>3</SUP>-3<i>m</i>)<i><SUP>x</SUP></i>+(3<i>m</i><SUP>2</SUP>-1)<i><SUP>y</SUP></i>=(<i>m</i><SUP>2</SUP>+1)<i><SUP>z</SUP></i>
PUBLICATIONES MATHEMATICAE-DEBRECENLe, MH  出版年:2001
Let m be a positive integer. In this paper we prove that if 2 // m and m > 206, then the equation (m(3) - 3m)(x) + (3m(2) - l)(y) = (m(2) + 1)(z): has only one positive integer solution (x, y, z) = (2, 2, 3) satisfying x...
A novel approach to roughness measure in fuzzy rough sets
FUZZY INFORMATION AND ENGINEERING, PROCEEDINGSZhang, Xiao-yan Xu, Wei-hua  出版年:2007
A hot topic of rough set theory is the combination of fuzzy set theory and this one. Many researchers do the work by introducing the concept of level fuzzy sets. In this paper, we will study roughness measure in fuzzy ro...
Interval Oscillation Criteria for Super-Half-Linear Impulsive Differential Equations with Delay
JOURNAL OF APPLIED MATHEMATICSGuo, Zhonghai Zhou, Xiaoliang Wang, Wu-Sheng  出版年:2012
We study the following second-order super-half-linear impulsive differential equations with delay [r(t)phi(gamma) (x'(t))]' + p(t)phi(gamma) (x(t - sigma)) + q(t)f(x(t - sigma)) = e(t), t not equal tau(k), x(t(+)) = a(k)...
ATR-FTIR spectroscopy with equidistant combination PLS method applied for rapid determination of glycated hemoglobin
ANALYTICAL METHODSHan, Yun Pan, Tao Zhou, Huihui Yuan, Rui  出版年:2018
A rapid quantification method of glycated hemoglobin (HbA1c) is proposed based on ATR-FTIR spectroscopy in human hemolysate samples. HbA1c, a major clinical diagnostic indicator of diabetes, is a relative content indicat...
Oscillatory and asymptotic properties of higher order nonlinear neutral difference equations
APPLIED MATHEMATICS AND COMPUTATIONZhou, Xiaoliang Zhang, Weinian  出版年:2008
In this paper, we study the oscillatory and asymptotic properties of solutions of higher order nonlinear neutral difference equations. Using Krasnoselskii's fixed point theorem, Schauder's fixed point theorem and Lebesgu...
Interval oscillation criteria for nonlinear differential equations with impulses and variable delay
APPLIED MATHEMATICS LETTERSZhou, Xiaoliang Liu, Changdong Wang, Wu-Sheng  出版年:2018
In this paper, the interval qualitative properties of a class of second order nonlinear differential equations are studied. For the hypothesis of delay tau(t) being variable, the definitions of "strong zero point" and "w...
水声信号高频小波包能量识别系统模型
《计算机工程与设计》杨亚菁  出版年:2006
对水声信号的识别,提出了高频小波能量法,并构造了一个自动识别系统模型。系统对信号进行小波分解后,取高频子空间能量作为特征向量值进行信号的识别。高频小波能量法可采取小波包与小波两种变换,通过对两种方法的比较显示:高频小波包...
关键词:水声信号  小波  小波能量  特征向量  识别系统  被引量:1
Existence and Global Attractivity of Positive Periodic Solutions for a Delayed Predator-Prey Model with Mutual Interference and Functional Response
FILOMATLiu, Changdong Zhou, Xiaoliang  出版年:2019
In this paper, by using comparison principle of differential equations, continuation theorem of coincidence degree theory and Lyapunov function, a delayed predator-prey model with mutual interference and functional respo...
The estimate for number of zeros of solutions of second order functional differential equations
APPLIED MATHEMATICS AND COMPUTATIONZhou, Xiaoliang  出版年:2009
In this paper, by extending the maximum principle, we study the number of zeros of solutions of second order functional differential equations. We obtain a sufficient condition for the existence of at most one zero of so...
The Kamenev type interval oscillation criteria of mixed nonlinear impulsive differential equations under variable delay effects
ADVANCES IN DIFFERENCE EQUATIONSZhou, Xiaoliang Liu, Changdong Chen, Ruyun  出版年:2019
In this paper, a class of mixed nonlinear impulsive differential equations is studied. When the delay sigma(t) is variable, each given interval is divided into two parts on which the quotients of x(t-sigma(t)) and x(t) a...
On Bloch minimal surfaces
COMPLEX VARIABLES AND ELLIPTIC EQUATIONSHuang, Xiaoling Wulan, Hasi  出版年:2010
We consider the minimal surfaces from the unit disk into R-n and some characterizations of the Bloch minimal surfaces are given.
On the linearly extended negative quadrant dependent random variables and its inequalities
COMMUNICATIONS IN STATISTICS-THEORY AND METHODSLi, Yongming Pang, Weicai Feng, Ziqing Li, Naiyi  出版年:2023
In this article, the structure of linearly extended negative quadrant dependent (LENQD) random variables is given, and its basic properties are investigated. In addition, the characteristic function inequality, Bernstein...
ASP.NET中缓存技术的应用研究
《微型机与应用》李用江  出版年:2005
介绍了ASP.NET中各种缓存技术的应用程序模型,并重点分析了每种应用模型的优缺点及其适用范围。
关键词:ASP.NET  缓存技术  应用程序模型  会话状态  视图状态  被引量:1
An Extension to Nonlinear Sum-Difference Inequality and Applications
ADVANCES IN DIFFERENCE EQUATIONSWang, Wu-Sheng Zhou, Xiaoliang  出版年:2009
We establish a general form of sum-difference inequality in two variables, which includes both more than two distinct nonlinear sums without an assumption of monotonicity and a nonconstant term outside the sums. We emplo...
Anticipated backward stochastic differential equations with non-Lipschitz coefficients
JOURNAL OF MATHEMATICAL CHEMISTRYZhou, Huihui Han, Yun Feng, Zhiguo Yuan, Rui  出版年:2021
This paper deals with a class of anticipated backward stochastic differential equations. We extend results of Peng and Yang (2009) to the case in which the generator satisfies Non-Lipschitz conditions. The existence and ...
Eventually positive solutions of higher order nonlinear neutral differential equations
APPLIED MATHEMATICS AND COMPUTATIONZhou, Xiaoliang 周效良  出版年:2008
In this paper, some results of Ouyang et al. [Ouyang, Li, Tang, Classifications and existence of positive solutions of higher order nonlinear neutral differential equations, Appl. Math. Comput. 148 (2004) 105-120] are im...
Oscillatory behavior of higher order nonlinear neutral forced differential equations with oscillating coefficients
COMPUTERS & MATHEMATICS WITH APPLICATIONSZhou, Xiaoliang Yu, Rong  出版年:2008
In this paper, the higher order nonlinear neutral forced differential equations of the form [x(t = p(t)x(tau(t))]((n)) + Sigma(m)(i=1)q(i)(t)f(i)(x(sigma(i)(t))) = s(t), t >= t(0). where n, m is an element of N, n >= 2 a...
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