期刊文献+
共找到136篇文章
< 1 2 7 >
每页显示 20 50 100
ITERATIVE METHODS FOR OBTAINING AN INFINITE FAMILY OF STRICT PSEUDO-CONTRACTIONS IN BANACH SPACES
1
作者 Meng WEN Haiyang LI +1 位作者 Changsong HU Jigen PENG 《Acta Mathematica Scientia》 SCIE CSCD 2022年第5期1765-1778,共14页
In this paper,we introduce a general hybrid iterative method to find an infinite family of strict pseudo-contractions in a q-uniformly smooth and strictly convex Banach space.Moreover,we show that the sequence defined... In this paper,we introduce a general hybrid iterative method to find an infinite family of strict pseudo-contractions in a q-uniformly smooth and strictly convex Banach space.Moreover,we show that the sequence defined by the iterative method converges strongly to a common element of the set of fixed points,which is the unique solution of the variational inequality<(λφ−νF)z,jq(z−z)>≤0,for z∈⋂_(i=1)^(∞)Γ(S_(i)).The results introduced in our work extend to some corresponding theorems. 展开更多
关键词 MKC iterative algorithm strict pseudo-contraction β-Lipschitzian d-strongly monotone Banach spaces
在线阅读 下载PDF
Iterative algorithm for solutions to new system of generalized mixed implicit equilibrium
2
作者 丁协平 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2013年第1期113-126,共14页
A new system of generalized mixed implicit equilibrium problems (SGMIEP) involving nonmonotone set-valued mappings is introduced and studied in real reflexive Banach spaces. First, an auxiliary mixed equilibrium pro... A new system of generalized mixed implicit equilibrium problems (SGMIEP) involving nonmonotone set-valued mappings is introduced and studied in real reflexive Banach spaces. First, an auxiliary mixed equilibrium problem (AMEP) is introduced. The existence and the uniqueness of the solutions to the AMEP are proved under quite mild assumptions without any coercive conditions. Next, by using the solution mapping of the AMEP, a system of generalized equation problems (SGEP) is considered, and its equivalence with the SGMIEP is shown. By using the SGEP, a new iterative algorithm for solving the SGMIEP is proposed and analyzed. The strong convergence of the iterative sequences generated by the algorithm is proved under suitable conditions. These results are new, which unify and generalize some recent results in this field. 展开更多
关键词 system of generalized mixed implicit equilibrium problems (SGMIEP) auxiliary mixed equilibrium problem (AMEP) system of generalized equation problems(SGEP) iterative algorithm reflexive Banach space
在线阅读 下载PDF
Stable Perturbed Algorithms for a New Class of Generalized Nonlinear Implicit Quasi Variational Inclusions in Banach Spaces 被引量:2
3
作者 Salahuddin Salahuddin Mohammad Kalimuddin Ahmad 《Advances in Pure Mathematics》 2012年第3期139-148,共10页
In this work, a new class of variational inclusion involving T-accretive operators in Banach spaces is introduced and studied. New iterative algorithms for stability for their class of variational inclusions and its c... In this work, a new class of variational inclusion involving T-accretive operators in Banach spaces is introduced and studied. New iterative algorithms for stability for their class of variational inclusions and its convergence results are established. 展开更多
关键词 T-Accretive Operators VARIATIONAL INCLUSIONS iterative algorithms Stability Conditions Convergence Strong Accretivity BANACH spaces
在线阅读 下载PDF
Existence and algorithm of solutions for a system of generalized mixed implicit equilibrium problems in Banach spaces
4
作者 丁协平 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2010年第9期1049-1062,共14页
A new system of generalized mixed implicit equilibrium problems is introduced and studied in Banach spaces. First, the notion of the Yosida proximal mapping for generalized mixed implicit equilibrium problems is intro... A new system of generalized mixed implicit equilibrium problems is introduced and studied in Banach spaces. First, the notion of the Yosida proximal mapping for generalized mixed implicit equilibrium problems is introduced. By using the notion, a system of generalized equation problems is considered, and its equivalence with the system of generalized mixed implicit equilibrium problems is also proved. Next, by applying the system of generalized equation problems, we suggest and analyze an iterative algorithm to compute the approximate solutions of the system of generalized mixed implicit equilibrium problems. The strong convergence of the iterative sequences generated by the algorithm is proved under quite mild conditions. The results are new and unify and generalize some recent results in this field. 展开更多
关键词 generalized mixed implicit equilibrium problem Yosida proximal mapping generalized equation problem iterative algorithm Banach space
在线阅读 下载PDF
General A-P Iterative Algorithm in Shift-invariant Spaces 被引量:3
5
作者 Jun XIAN Song LI 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2009年第4期545-552,共8页
A general A-P iterative algorithm in a shift-invariant space is presented. We use the algorithm to show reconstruction of signals from weighted samples and also show that the general improved algorithm has better conv... A general A-P iterative algorithm in a shift-invariant space is presented. We use the algorithm to show reconstruction of signals from weighted samples and also show that the general improved algorithm has better convergence rate than the existing one. An explicit estimate for a guaranteed rate of convergence is given. 展开更多
关键词 irregular sampling iterative algorithm lattice-invariant space shift-invariant space spline subspace
原文传递
A NEW CLASS OF BILEVEL GENERALIZED MIXED EQUILIBRIUM PROBLEMS IN BANACH SPACES 被引量:2
6
作者 丁协平 《Acta Mathematica Scientia》 SCIE CSCD 2012年第4期1571-1583,共13页
A new class of bilcvel generalized mixed equilibrium problems involving setvalued mappings is introduced and studied in a real Banach space. By using the auxiliary principle technique, new iterative algorithms for sol... A new class of bilcvel generalized mixed equilibrium problems involving setvalued mappings is introduced and studied in a real Banach space. By using the auxiliary principle technique, new iterative algorithms for solving the generalized mixed equilibrium problems and bilevel generalized mixed equilibrium problems involving set-valued mappings are suggested and analyzed. Existence of solutions and strong convergence of the iterative sequences generated by the algorithms are proved under quite mild conditions. The behavior of the solution set of the generalized mixed equilibrium problems and bilevel generalized mixed equilibrium problems is also discussed. These results are new and generalize some recent results in this field. 展开更多
关键词 generalized mixed equilibrium problem bilevel generalized mixed equilib-rium problem involving set-valued mappings MONOTONICITY auxiliary prin-ciple iterative algorithm Banach space
在线阅读 下载PDF
A New System of Variational Inclusions with (H,η)-accretive Operators in Banach Spaces 被引量:3
7
作者 LIU Ying CHEN Yong-li HE Zhen 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2008年第4期565-573,共9页
In this paper, we first introduce a new class of generalized accretive operators named (H,η)-accretive in Banach space. By studying the properties of (H,η)-accretive, we extend the concept of resolvent operators... In this paper, we first introduce a new class of generalized accretive operators named (H,η)-accretive in Banach space. By studying the properties of (H,η)-accretive, we extend the concept of resolvent operators associated with m-accretive operators to the new (H,η)-accretive operators. In terms of the new resolvent operator technique, we prove the existence and uniqueness of solutions for this new system of variational inclusions. We also construct a new algorithm for approximating the solution of this system and discuss the convergence of the sequence of iterates generated by the algorithm. 展开更多
关键词 q-uniformly smooth Banach space (H η)-accretive operator resolvent operator technique system of variational inclusion iterative algorithm
在线阅读 下载PDF
System of set-valued mixed quasi-variational-like inclusions involving H-η-monotone operators in Banach spaces
8
作者 丁协平 王中宝 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2009年第1期1-12,共12页
A new system of the set-valued mixed quasi-variational-like inclusions (SSMQVLI) involving H-η-monotone operators is studied in general Banach spaces without uniform smoothness. By using the resolvent operator tech... A new system of the set-valued mixed quasi-variational-like inclusions (SSMQVLI) involving H-η-monotone operators is studied in general Banach spaces without uniform smoothness. By using the resolvent operator technique of H-η-monotone operators, a new iterative algorithm for finding approximate solutions to SSMQVLI is proposed. It is shown that the iterative sequences generated by the algorithm converge strongly to the exact solution of SSMQVLI under appropriate assumptions. These obtained new results have extended and improved previous results. 展开更多
关键词 H-η-monotone operators resolvent operator technique system of set-valued mixed quasi-variational-like inclusions iterative algorithm Banach spaces
在线阅读 下载PDF
On Solving a System of Generalized Mixed Equilibrium-like Problems in Hilbert Spaces
9
作者 LIU Bang-tao LUO Min 《Chinese Quarterly Journal of Mathematics》 CSCD 2013年第2期180-189,共10页
A system of generalized mixed equilibrium-like problems is introduced and the existence of its solutions is shown by using the auxiliary principle technique in Hilbert spaces.
关键词 equilibrium-like problem auxiliary principle iterative algorithm Hilbert space
在线阅读 下载PDF
Auxiliary principle and approximation solvability for system of new generalized mixed equilibrium problems in reflexive Banach spaces
10
作者 丁协平 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2011年第2期231-240,共10页
A new system of generalized mixed equilibrium problems (SGMEPs) involving generalized mixed variational-like inequality problems is introduced and studied in reflexive Banach spaces. A system of auxiliary generalize... A new system of generalized mixed equilibrium problems (SGMEPs) involving generalized mixed variational-like inequality problems is introduced and studied in reflexive Banach spaces. A system of auxiliary generalized mixed equilibrium problems (SAGMEPs) for solving the SGMEPs is first introduced. Existence and uniqueness of the solutions to the SAGMEPs is proved under quite mild assumptions without any coercive conditions in reflexive Banach spaces. Using the auxiliary principle technique, a new iterative algorithm for solving the SGMEPs is proposed and analyzed. Strong convergence of the iterative sequences generated by the algorithm is also proved under quite mild assumptions without any coercive conditions. These results improve, unify, and generalize some recent results in this field. 展开更多
关键词 system of generalized mixed equilibrium problem auxiliary principle iterative algorithm reflexive Banach space
在线阅读 下载PDF
A New System of Generalized Variational Inclusions Involving H-η-monotone Operators in Uniformly Smooth Banach Spaces
11
作者 FENG SHI-QIANG GAO DA-PENG 《Communications in Mathematical Research》 CSCD 2012年第4期324-336,共13页
In this paper, we introduce and study a new system of generalized vari- ational inclusions involving H-η-monotone operators in uniformly smooth Banach spaces. Using the resolvent operator technique associated with H-... In this paper, we introduce and study a new system of generalized vari- ational inclusions involving H-η-monotone operators in uniformly smooth Banach spaces. Using the resolvent operator technique associated with H-η-monotone opera- tors, we prove the approximation solvability of solutions using an iterative algorithm. The results in this paper extend and improve some known results from the literature. 展开更多
关键词 uniformly smooth Banach space H-η-monotone operator resolventoperator technique system of generalized variational inclusion iterative algorithm
在线阅读 下载PDF
Existence and Algorithm of Solutions for Generalized Set-valued Strongly Nonlinear Mixed Variational-like Type Inequalities
12
作者 胡梦瑜 曾六川 陈珊敏 《Journal of Donghua University(English Edition)》 EI CAS 2007年第4期467-472,477,共7页
The auxiliary principle technique is extended to study a class of generalized set-valued strongly nonlinear mixed variational-like type inequalities. Firstly, the existence of solutions to the auxiliary problems for t... The auxiliary principle technique is extended to study a class of generalized set-valued strongly nonlinear mixed variational-like type inequalities. Firstly, the existence of solutions to the auxiliary problems for this class of generalized set-valued strongly nonlinear mixed variational-like type inequalities is shown. Secondly, the iterative algorithm for solving this class of generalized set-valued strongly nonlinear mixed variational-like type inequalities is given by using this existence result. Finally, the strong convergence of iterative sequences generated by the algorithm is proven. The present results improve, generalize and modify the earlier and recent ones obtained previously by some authors in the literature. 展开更多
关键词 iterative algorithm set-valued mapping EXISTENCE CONVERGENCE Hilbert space
在线阅读 下载PDF
考虑必经工序的混合流水车间调度的迭代贪婪算法研究
13
作者 李车翔 赵嘉欣 +3 位作者 侯亚群 郑倩 李功圣 王玉亭 《聊城大学学报(自然科学版)》 2025年第3期346-361,共16页
针对混合流水车间调度问题(Hybrid Flow Shop Scheduling Problem, HFSP)展开深入研究,建立了以最小化最大完工时间为优化目标的数学模型,提出了基于必经工序的迭代贪婪算法(Mandatory Operations-based IG Algorithm, MOAIG)。首先,给... 针对混合流水车间调度问题(Hybrid Flow Shop Scheduling Problem, HFSP)展开深入研究,建立了以最小化最大完工时间为优化目标的数学模型,提出了基于必经工序的迭代贪婪算法(Mandatory Operations-based IG Algorithm, MOAIG)。首先,给出了与必经工序相关的4个引理;其次,设计了调度序列的图空间表示方式,并针对HFSP多阶段的特点,将图空间中关键路径上的必经工序进行局部搜索,提高了局部搜索效率,拓展了搜索空间;然后,为了增加破坏操作的灵活性和多样性,提出了保守跳跃破坏策略;最后,通过对576个典型测试算例的数值仿真以及与3种代表算法的统计比较,验证了所提基于必经工序的加速迭代贪婪算法的有效性和优越性。 展开更多
关键词 混合流水车间调度 最大完工时间 图空间 保守跳跃破坏 必经工序 迭代贪婪算法
在线阅读 下载PDF
Iterative Methods for Solving a System of Variational Inclusions Involving (H, η)-Monotone Operators in Banach Spaces
14
作者 LOU Jian HE Xin Feng HE Zhen 《Journal of Mathematical Research and Exposition》 CSCD 2009年第1期33-42,共10页
In this paper, we introduce and study a new system of variational inclusions involving (H, η)-monotone operators in Banach space. Using the resolveut operator associated with (H, η)- monotone operators, we prove... In this paper, we introduce and study a new system of variational inclusions involving (H, η)-monotone operators in Banach space. Using the resolveut operator associated with (H, η)- monotone operators, we prove the existence and uniqueness of solutions for this new system of variational inclusions. We also construct a new algorithm for approximating the solution of this system and discuss the convergence of the iterative sequence generated by the algorithm. 展开更多
关键词 Keywords q-uniformly smooth space (H η)-monotone operator Resolvent operator technique system of variational inclusion iterative algorithm.
在线阅读 下载PDF
一种新的离散混沌同步保密通信方案 被引量:6
15
作者 潘勃 李骞 +3 位作者 冯金富 徐建军 李斌 陶茜 《计算机应用》 CSCD 北大核心 2010年第1期198-202,共5页
系统地分析了一种新的TD-ERCS离散混沌系统产生的伪随机序列的复杂性,仿真验证了TD-ERCS离散系统是复杂性稳定的全域性离散混沌系统。在此基础上,提出基于TD-ERCS离散系统构造伪随机序列的双信道保密通信方案。在该方案中,发送端利用混... 系统地分析了一种新的TD-ERCS离散混沌系统产生的伪随机序列的复杂性,仿真验证了TD-ERCS离散系统是复杂性稳定的全域性离散混沌系统。在此基础上,提出基于TD-ERCS离散系统构造伪随机序列的双信道保密通信方案。在该方案中,发送端利用混沌驱动器产生混沌密钥和遮掩信号,基于混沌的伪随机序列发生器(CPRNG)将驱动离散系统产生的混沌序列转化为加密密钥序列,并对信息信号先加密再遮掩。获得加密信号后使用一个信道传输,利用另一信道传输系统同步的单变量同步信号。理论分析和数值实验验证了该方案在密钥安全性和算法复杂性方面性能良好,且易于软件实现。 展开更多
关键词 相空间 混沌同步 Limpel—Ziv算法 Logistic迭代 遮掩信号
在线阅读 下载PDF
图像盲复原算法研究现状及其展望 被引量:53
16
作者 张航 罗大庸 《中国图象图形学报(A辑)》 CSCD 北大核心 2004年第10期1145-1152,共8页
当点扩展函数未知或不确知的情况下,从观察到的退化图像中恢复原始图像的过程称为图像盲复原。近年来,图像盲复原算法得到了广泛的研究。本文首先根据点扩展函数的特点,将图像盲复原算法分为单通道盲复原算法、空间不变多通道盲复原算... 当点扩展函数未知或不确知的情况下,从观察到的退化图像中恢复原始图像的过程称为图像盲复原。近年来,图像盲复原算法得到了广泛的研究。本文首先根据点扩展函数的特点,将图像盲复原算法分为单通道盲复原算法、空间不变多通道盲复原算法和空间变化图像盲复原算法等3种类型;然后讨论了3种算法的研究现状并指出了现有各种算法的优缺点,最后通过研究总结出以下结论现有算法的改进以及新的算法研究、基于非线性退化模型的算法研究、去噪处理算法研究、实时处理算法以及算法的应用研究是今后进一步研究的发展方向。 展开更多
关键词 算法研究 图像 点扩展函数 多通道 复原 恢复 退化模型 单通道 实时处理 去噪
在线阅读 下载PDF
一种稀疏测向数据下的天基初轨确定模型及其算法 被引量:5
17
作者 刘磊 郗晓宁 +1 位作者 戎鹏志 王功波 《宇航学报》 EI CAS CSCD 北大核心 2009年第3期870-876,共7页
稀疏测向数据下的天基初轨确定具有重要的应用价值。针对地基Laplace和Gauss方法在天基稀疏测向初定轨中存在的不收敛和平凡解问题,提出了一种新的模型———双ρ迭代模型,研究了优化算法中的变尺度方法和遗传算法作为解算算法,最后进... 稀疏测向数据下的天基初轨确定具有重要的应用价值。针对地基Laplace和Gauss方法在天基稀疏测向初定轨中存在的不收敛和平凡解问题,提出了一种新的模型———双ρ迭代模型,研究了优化算法中的变尺度方法和遗传算法作为解算算法,最后进行了仿真。结果表明,双ρ迭代模型可以较好地解决地基方法在天基测向初定轨应用中的上述问题,利用变尺度法的双ρ迭代模型具有90%以上的解算成功率,且具有良好的解算速度和收敛性,而采用改进的遗传算法可以解算其余算例,二者结合使用可以达到较好的初定轨效果。 展开更多
关键词 天基测向 稀疏数据 初定轨 双ρ迭代模型 变尺度法 遗传算法
在线阅读 下载PDF
增生算子零点的迭代逼近 被引量:19
18
作者 张树义 李丹 丛培根 《北华大学学报(自然科学版)》 CAS 2017年第2期141-147,共7页
引入一种新的粘滞迭代算法,在Banach空间中研究了增生算子零点的迭代逼近问题,在一定条件下证明了这种新的粘滞迭代算法强收敛到增生算子的一个零点,推广和改进了相关结果.
关键词 BANACH空间 增生算子 算子零点 粘滞迭代算法
在线阅读 下载PDF
基于约束最小二乘的空域迭代图像复原 被引量:4
19
作者 苗晴 唐斌兵 周海银 《仪器仪表学报》 EI CAS CSCD 北大核心 2005年第z1期657-659,共3页
给出了一种用于图像复原的基于约束最小二乘空间域迭代的有效方法。该方法从约束最小二乘技术出发,在加性噪声能量有界的前提下,采用正则化的思想来克服病态问题,通过解一个单变量方程,并利用空域迭代算法从而实现了一种有效的图像复原... 给出了一种用于图像复原的基于约束最小二乘空间域迭代的有效方法。该方法从约束最小二乘技术出发,在加性噪声能量有界的前提下,采用正则化的思想来克服病态问题,通过解一个单变量方程,并利用空域迭代算法从而实现了一种有效的图像复原。实验结果表明,在图像被加性噪声污染较严重时,该方法在保护纹理的同时又能很好地抑制噪声,较传统的约束最小二乘法具有更好的复原效果。 展开更多
关键词 图像复原 约束最小二乘 正则化 空域迭代算法
在线阅读 下载PDF
CT法测束流发射度的计算机模拟 被引量:4
20
作者 邹长丽 曹泽新 +1 位作者 刘玲 徐艳艳 《沈阳师范大学学报(自然科学版)》 CAS 2007年第2期171-174,共4页
主要介绍一种利用CT法测量相空间束流发射度的技术,通过一系列二维相空间束流图像的计算机模拟重建,根据对相关计算结果的分析,表明该技术具有很高的测量精度,可以为研究束流传输、验证束流动力学理论提供所需的可靠束流相空间参数.
关键词 相空间密度分布函数 CT 迭代重建算法
在线阅读 下载PDF
上一页 1 2 7 下一页 到第
使用帮助 返回顶部