Beta算子关于导数只具有第1类间断点函数的同时逼近

利用概率论中中心极限定理研究了Beta算子及其导数对导数只具有第1类间断点函数类的同时逼近问题,得到了误差的点态的估计.     

Lp空间中Post-Widder算子带权同时逼近的强逆不等式

对于Post-Widder算子Pn(f,x),证明了当s∈N0=N U{0},wf(s)∈Lp(0,∞)(1＜p≤∞)时,存在某一正数m,使得ω2ψ(f(s),1/(∫)n)ω,p≤C(∥ω(P(s)nf-f(s))∥p+∥ω(P(s)mnf-f(s))∥p+1/n∥ωf(s)∥p),其中ψ(x)=x;w(x)=xa(1+x)b;a,6∈R1;C＞0;ωψ2(f,t)w,p是带权光滑模.     

Establishing Efficient C2C E-alliance Based on Mobile Agent

In order to alleviate difficulties of conducting consumer-to-consumer(C2C)e-commerce transaction,establishing efficient e-alliance was proposed.E-alliance is the union of e-commerce sites.It is constructed by mobile agents.The mobile agent architecture was discussed.The process of selecting suitable e-commerce site to e-alliance was presented based on support vector machine(SVM)and fuzzy method.A prototype of the proposed system is implemented on a web platform.To enable data exchange between e-alliance and...     

某些算子的逼近等价定理

研究了一类混合型Durrmeyer算子，在Bernstein-Durrmeyer算子和Baskakou-Durrmeyet算子的基础上，提出4种新的混合型Durrmeyer型算子，建立了统一的逼近等价定理。     

Baskakov—Durrmeyer型算子的带权同时逼近

利用Ｄｉｔｚｉａｎ－Ｔｏｔｉｋ光滑模并改变Ｋ泛函的等价性导出Ｂａｓｋａｋｏｖ－Ｄｕｒｒｍｅｙｅｒ型算子的带Ｊａｃｏｂｉ权同时逼近的正逆结果。     

Meyer-Konig and Zeller 算子的弱型不等式推广及该算子积分型对囿变函数的逼近

给出了正线性算子Ｌｎ（ｆ；ｘ）对囿变函数的点态逼近式，并且说明这个逼近估计式是最佳的。对Ｍｅｙｅｒ－ＫｏｎｉｇａｎｄＺｅｌｅｒ算子给出了α＝０时的Ｓｔｅｃｋｉｎ－Ｍａｒｃｈａｕｄ型不等式     

Gamma算子加权同时点态逼近

利用ω2rλψ(f,t)ωψs,我们讨论了Gamma算子线性组合带Jacobi-权的同时逼近,统一了有关ω2(f,t),ω2ψ(f,t)及ω2ψ(t,f)w的结果.     

单纯形上Stancu算子的逼近定理

利用Ｄｉｔｚｉａｎ－Ｔｏｔｉｋ模与Ｋ－泛函的等价性,研究了单纯形上Ｓｔａｎｃｕ算子的副近正逆定理。     

Evaluation System and Actualization of Selection Supplier in ERP Enterprise

Suppliers become an essential factor of enterprise competitiveness. The analytic hierarchy process is a kind of Decision-making method with the combination of quantity and quality. This paper presents the evaluation system of supplier selection, using Analytic Hierarchy Process （AHP） method to select the optimum supplier in Enterprise Resource Planning （ERP） enterprise. In order to reduce factor of manmade and increase exactitude, this paper innovates to use a real database in ERP system for evaluation. It also gives an example that one enterprise selects supplier.