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赋Orlicz范数的Orlicz函数空间的紧强凸性质 被引量:1
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作者 左明霞 邹金爽 《哈尔滨理工大学学报》 CAS 北大核心 2015年第5期123-126,共4页
利用Banach空间几何理论中凸性与光滑性的对偶关系,研究了紧强凸性质在赋Orlicz范数的Orlicz函数空间L0M中的刻画问题.首先,给出了赋Luxemburg范数的Orlicz函数空间LM的子空间EM具有S性质的判别准则.然后在赋Orlicz范数Orlicz函数空间L0... 利用Banach空间几何理论中凸性与光滑性的对偶关系,研究了紧强凸性质在赋Orlicz范数的Orlicz函数空间L0M中的刻画问题.首先,给出了赋Luxemburg范数的Orlicz函数空间LM的子空间EM具有S性质的判别准则.然后在赋Orlicz范数Orlicz函数空间L0M中,给出了紧强凸性质的具体刻画,进而得到了这类空间具有强凸性质的充分必要条件. 展开更多
关键词 ORLICZ函数空间 S性质 紧强凸性质 凸性质
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Orlicz-Sobolev空间各向一致凸性质 被引量:2
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作者 刘宏亮 陈述涛 《哈尔滨师范大学自然科学学报》 CAS 2004年第2期1-4,共4页
关键词 ORLICZ-SOBOLEV空间 各向一致凸性质 LUXEMBURG范数 △2条件 BANACH空间
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函数的次微分性质 被引量:2
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作者 郭兴明 《应用数学和力学》 EI CSCD 北大核心 1996年第5期427-432,共6页
本文给出了函数的Fenchel次微分、Frechet次微分,Hadamard次微分,Gateaux次微分的一些重要性质,并对函数的性质尤其是凸性给出其次微分刻画.
关键词 次微分 凸性质 单调 函数 Fenchel次微分
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Orlicz-Bochner空间的局部一致凸性
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作者 张剑尘 《科技创新导报》 2009年第6期14-15,共2页
本文运用Orlicz空间和Lebesgue-Bochner空间理论及技巧,给出了Orlicz-Bochner空间在赋以Luxemburg范数时,球面上的点为局部一致凸点的充分性条件和空间具有局部一致凸性质的充要条件。
关键词 ORLICZ-BOCHNER空间 LUXEMBURG范数 局部一致凸性质 条件
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Orlicz-Bochner空间的各向一致凸性
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作者 张剑尘 《长治学院学报》 2008年第5期7-8,共2页
文章运用Orlicz空间和Lebesgue-Bochner空间理论及技巧,给出了Orlicz-Bochner空间在赋以Luxemburg范数时,球面上的点为各向一致凸点的充分性条件和空间具有各向一致凸性质的充要条件。
关键词 ORLICZ-BOCHNER空间 LUXEMBURG范数 各向一致凸性质 △2条件
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Orlicz-Bochner空间的中点局部一致凸性
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作者 张剑尘 《长沙大学学报》 2009年第2期8-9,共2页
O rlicz-Bochner空间的各种凸性不仅具有重要的理论研究价值,而且可以解决某些优化问题、积分方程和偏微分方程求解问题以及控制论中的线性问题和非线性问题.给出了O rlicz-Bochner空间中的点为强端点的充分性条件和空间具有中点局部一... O rlicz-Bochner空间的各种凸性不仅具有重要的理论研究价值,而且可以解决某些优化问题、积分方程和偏微分方程求解问题以及控制论中的线性问题和非线性问题.给出了O rlicz-Bochner空间中的点为强端点的充分性条件和空间具有中点局部一致凸性质的充要条件. 展开更多
关键词 Orlicz—Bochner空间 LUXEMBURG范数 强端点 中点局部一致凸性质
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基于区间线性模版约束的程序分析
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作者 姜加红 尹帮虎 陈立前 《计算机学报》 EI CSCD 北大核心 2018年第3期545-557,共13页
抽象解释是一种对程序语义进行可靠近似的通用理论,该理论在保证可靠性的前提下,可为程序变量的值范围分析提供一个通用的框架.抽象域是抽象解释框架的核心,在该框架下面向数值性质分析的数值抽象域得到了广泛的关注.其中,模板多面体抽... 抽象解释是一种对程序语义进行可靠近似的通用理论,该理论在保证可靠性的前提下,可为程序变量的值范围分析提供一个通用的框架.抽象域是抽象解释框架的核心,在该框架下面向数值性质分析的数值抽象域得到了广泛的关注.其中,模板多面体抽象域的表达能力覆盖了程序分析中常用的弱关系型抽象域,如区间抽象域、八边形抽象域等.该文对经典的基于线性模版约束的模版多面体抽象域进行扩展,以支持区间线性模版约束,从而得到一个新的数值抽象域——区间线性模版约束抽象域,可以用来推导变量间形如"∑k[a_k,b_k]x_k≤c"的区间线性不等式关系(其中区间系数[a_k,b_k]为分析前预先确定的常量).该抽象域采用"弱解"作为区间线性约束的解语义,可以表达某类非凸(甚至非联通)性质,因而比经典的模版多面体抽象域表达能力更强.区间线性模板约束抽象域的域元素可以看作是一系列模版多面体的析取,几何上,其域元素与每个象限的交均是一个凸的模板多面体(可以为空).该文给出了区间线性模版约束抽象域的域表示和域操作,基于该抽象域的静态分析算法主要基于区间线性规划来实现.进一步,该文讨论了基于区间线性模版约束抽象域中区间线性模版的生成方法.最后,该文在开源数值抽象库APRON中实现了区间线性模版约束抽象域,并开展了程序分析实验.初步的实验结果表明区间线性模版约束抽象域可以有效地分析程序中的析取行为. 展开更多
关键词 抽象解释 区间线性模版约束 区间线性规划 程序静态分析 凸性质
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Property A_(UB) of Metric Spaces under Decompositions of Finite Depth
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作者 王显金 杨军 王勤 《Journal of Donghua University(English Edition)》 EI CAS 2010年第5期618-622,共5页
Property AUB is the notion in metric geometry which has applications in higher index problems.In this paper,the permanence property of property AUB of metric spaces under large scale decompositions of finite depth is ... Property AUB is the notion in metric geometry which has applications in higher index problems.In this paper,the permanence property of property AUB of metric spaces under large scale decompositions of finite depth is proved. 展开更多
关键词 metric space property AUB uniformly convex Banach space large scale decomposition permanence property
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插值型三次样条及保形插值曲线曲面
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作者 周晓平 柳朝阳 《数值计算与计算机应用》 2017年第1期49-58,共10页
为直接混合插值点,生成插值曲线和张量积型插值曲面,讨论了插值型样条函数.为生成保形插值曲线和曲面,分析了其不同于非插值曲线和曲面的凸包和保凸的具体含义.推导出三次C^1插值型样条函数公式,构造三次C^1插值样条曲线,给出了插值样... 为直接混合插值点,生成插值曲线和张量积型插值曲面,讨论了插值型样条函数.为生成保形插值曲线和曲面,分析了其不同于非插值曲线和曲面的凸包和保凸的具体含义.推导出三次C^1插值型样条函数公式,构造三次C^1插值样条曲线,给出了插值样条曲线的分段Bezier表示.所得三次插值曲线曲面具有几何不变性、凸包性质、局部可调性.讨论了插值曲线的保凸性质及关于插值数据点前后顺序的对称性.展示了具有和不具有保形性质插值曲线和张量积型插值曲面的实例. 展开更多
关键词 插值型样条 插值曲线曲面 保形性 局部性 凸性质 对称性.
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On Drop and Weak Drop Properties for Bounded Closed Convex Sets*
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作者 张子厚 《Journal of Mathematical Research and Exposition》 CSCD 1999年第4期667-672,共6页
In this paper we prove three equivalent conditions of bounded closed convexset K in Banach space to have the drop and weak drop properties. We also give fourequivalent conditions of Banach space and its dual space to ... In this paper we prove three equivalent conditions of bounded closed convexset K in Banach space to have the drop and weak drop properties. We also give fourequivalent conditions of Banach space and its dual space to have the drop and weak dropproperties. 展开更多
关键词 Bounded closed convex set drop property weak drop property.
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Some properties of g-convex functions 被引量:2
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作者 LI XiaoJuan 《Science China Mathematics》 SCIE 2013年第10期2117-2122,共6页
In this paper,we obtain that eachg-convex function is continuous and convex,and we also extend Jia and Peng’s result on the characterization of g-convex function without the bounded assumption of the value of g at th... In this paper,we obtain that eachg-convex function is continuous and convex,and we also extend Jia and Peng’s result on the characterization of g-convex function without the bounded assumption of the value of g at the origin. 展开更多
关键词 backward stochastic differential equation Jensen's inequality G-EXPECTATION g-convexity
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TOPOLOGICAL STRUCTURE OF EFFICIENT SET OF OPTIMIZATION PROBLEM OF SET-VALUED MAPPING 被引量:7
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作者 LI YUANXI 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 1994年第1期115-122,共8页
This paper is concerned with the topological structure of efficient sets for optimizationproblem of set-valued mapping. It is proved that these sets are closed or. connected under someconditions on cone-continuity, co... This paper is concerned with the topological structure of efficient sets for optimizationproblem of set-valued mapping. It is proved that these sets are closed or. connected under someconditions on cone-continuity, cone-convexity and cone-quasiconvexity. 展开更多
关键词 Optimization of set-valued mapping Vector optimization Efficient solution Cone-convexity Cone-quasiconvexity Closedness Connectedness.
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FATOU PROPERTY ON HARMONIC MAPS FROM COMPLETE MANIFOLDS WITH NONNEGATIVE CURVATURE AT INFINITY INTO CONVEX BALLS 被引量:2
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作者 YANG YIHU(Department of Mathematics,Fudan University,Shanghai 200433, China.) 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 1995年第3期341-350,共10页
The author considers harmonic maps on complete noncompact manifolds, solves the Dirichlet problem in manifolds with nonnegative sectional curvature out of a compact set, and proves the Fatou theorem for harmonic maps ... The author considers harmonic maps on complete noncompact manifolds, solves the Dirichlet problem in manifolds with nonnegative sectional curvature out of a compact set, and proves the Fatou theorem for harmonic maps into convex balls. 展开更多
关键词 Complete manifold Harmonic map Convex ball Fatou property.
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A STRONG OPTIMIZATION THEOREM IN LOCALLY CONVEX SPACES 被引量:3
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作者 CHENGLIXIN TENGYANMEI 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2003年第3期395-402,共8页
This paper presents a geometric characterization of convex sets in locally convex spaces onwhich a strong optimization theorem of the Stegall-type holds, and gives Collier's theorem ofw* Asplund spaces a localized... This paper presents a geometric characterization of convex sets in locally convex spaces onwhich a strong optimization theorem of the Stegall-type holds, and gives Collier's theorem ofw* Asplund spaces a localized setting. 展开更多
关键词 OPTIMIZATION Geometry of infinite dimensions Convexification of nonconvex function Convex function DIFFERENTIABILITY Locally convex space
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Warm needling moxibustion plus PKP for vertebral compression fracture due to kidney deficiency and blood stasis:a randomized controlled trial 被引量:5
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作者 Chen Xu 《Journal of Acupuncture and Tuina Science》 CSCD 2021年第2期133-138,共6页
Objective:To explore the efficacy and mechanism of warm needling moxibustion plus percutaneous kyphoplasty(PKP)for osteoporotic vertebral compression fracture(OVCF)due to kidney deficiency and blood stasis.Methods:A t... Objective:To explore the efficacy and mechanism of warm needling moxibustion plus percutaneous kyphoplasty(PKP)for osteoporotic vertebral compression fracture(OVCF)due to kidney deficiency and blood stasis.Methods:A total of 70 OVCF patients were randomized into a control group and an observation group,with 35 cases in each group.The control group was given PKP treatment,and the observation group was treated with warm needling moxibustion on the basis of the treatment in the control group.The visual analog scale(VAS)and Oswestry disability index(ODI)were scored and the Cobb angle of fractured vertebrae was measured before and after treatment.The re-fracture rate of the adjacent vertebrae was recorded at 1-year follow-up.The serum levels of transforming growth factor(TGF)-β1 and omentin-1 were measured before and after treatment.Results:After treatment,the VAS and ODI scores in both groups decreased(all P<0.05),and all the scores in the observation group were lower than those in the control group(both P<0.05).After treatment,the Cobb angle of fractured vertebrae in both groups decreased(both P<0.05),and the Cobb angle in the observation group was smaller than that in the control group(P<0.05).At 1-year follow-up,the re-fracture rate of the adjacent vertebrae in the observation group was lower than that in the control group(P<0.05).After treatment,the serum levels of TGF-β1 and omentin-1 in both groups increased significantly(all P<0.05),and the serum levels of TGF-β1 and omentin-1 in the observation group were higher than those in the control group(both P<0.05).Conclusion:The treatment of warm needling moxibustion plus PKP can relieve pain,improve dysfunction,promote healing of the injured vertebrae,and reduce the re-fracture rate of the adjacent vertebrae in patients with OVCF due to kidney deficiency and blood stasis,which may be related to the increase of serum TGF-β1 and omentin-1 levels. 展开更多
关键词 Acupuncture Therapy Warm Needling Therapy Percutaneous Kyphoplasty Osteoporotic Fractures FRACTURES Compression Randomized Controlled Trial
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Network Lifetime Global Optimization for Multi-Source and Single-Sink Topology in Wireless Sensor Networks
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作者 王晖 吴迪 +1 位作者 AGOULMINE Nazim 马懋德 《Journal of Shanghai Jiaotong university(Science)》 EI 2009年第2期195-203,共9页
The multi-source and single-sink(MSSS) topology in wireless sensor networks(WSNs) is defined as a network topology,where all of nodes can gather,receive and transmit data to the sink.In energy-constrained WSNs with su... The multi-source and single-sink(MSSS) topology in wireless sensor networks(WSNs) is defined as a network topology,where all of nodes can gather,receive and transmit data to the sink.In energy-constrained WSNs with such a topology,the joint optimal design in the physical,medium access control(MAC) and network layers is considered for network lifetime maximization(NLM).The problem of integrating multi-layer information to compute NLM,which involves routing flow,link schedule and transmission power,is formulated as a nonlinear optimization problem.Specially under time division multiple access(TDMA) scheme,this problem can be transformed into a convex optimization problem.To solve it analytically we make use of the property that local optimization is global optimization in convex problem.This allows us to exploit the Karush-Kuhn-Tucker (KKT) optimality conditions to solve it and obtain analytical solution expression,i.e.,the globally optimal network lifetime(NL).NL is derived as a function of number of nodes,their initial energy and data rate arrived at them. Based on the analysis of analytical approach,it takes the influence of data rates,link access and routing method over NLM into account.Moreover,the globally optimal transmission schemes are achieved by solution set during analytical approach and applied to algorithms in TDMA-based WSNs aiming at NLM on OMNeT++ to compare with other suboptimal schemes. 展开更多
关键词 multi-source and single-sink (MSSS) topology network lifetime cross-layer optimization Karush- Kuhn-Tucker (KKT) optimality conditions global optimization analytical solution
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