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NONEMPTY INTERSECTION THEOREMS AND SYSTEM OF GENERALIZED VECTOR EQUILIBRIUM PROBLEMS IN PRODUCT G-CONVEX SPACES 被引量:3
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作者 丁协平 《应用数学和力学》 EI CSCD 北大核心 2004年第6期563-571,共9页
By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established... By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established in noncompact product G-convex spaces. As applications, some equilibrium existence theorems for a system of generalized vector equilibrium problems were proved in noncompact product G-convex spaces. These theorems unify, improve and generalize some important known results in literature. 展开更多
关键词 集值映象组 非空交定理 广义矢量平衡问题组 乘积G凸空间
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SYSTEM OF GENERALIZED VECTOR QUASI-EQUILIBRIUM PROBLEMS ON PRODUCT FC-SPACES 被引量:5
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作者 丁协平 《Acta Mathematica Scientia》 SCIE CSCD 2007年第3期522-534,共13页
By applying a maximal element theorem on product FC-space due to author, some new equilibrium existence theorems for generalized games with fuzzy constraint correspondences are proved in FC-spaces. By using these equi... By applying a maximal element theorem on product FC-space due to author, some new equilibrium existence theorems for generalized games with fuzzy constraint correspondences are proved in FC-spaces. By using these equilibrium existence theorems, some new existence theorems of solutions for the system of generalized vector quasi-equilibrium problems are established in noncompact product FC-spaces. These results improve and generalize some recent results in literature to product FC-spaces without any convexity structure. 展开更多
关键词 Maximal element generalized game equilibrium system of generalized vector quasi-equilibrium problems FC-spaces
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Algorithms for Common Solutions to Generalized Mixed Equilibrium Problems and Fixed Point Problems under Nonlinear Transformations in Banach Spaces 被引量:1
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作者 Yanlai Song Xinhong Chen 《Journal of Applied Mathematics and Physics》 2019年第11期2632-2649,共18页
The purpose of this paper is to present a new iterative scheme for finding a common solution of the generalized mixed equilibrium problems with an infinite family of inverse strongly monotone mappings and the fixed po... The purpose of this paper is to present a new iterative scheme for finding a common solution of the generalized mixed equilibrium problems with an infinite family of inverse strongly monotone mappings and the fixed point problems of demimetric mappings under nonlinear transformations in Banach spaces. Applications are also included. The results in this paper are the extension and improvement of the recent results in the literature. 展开更多
关键词 Fixed POINT Demimetric Mapping GENERALIZED MIXED equilibrium Problems BANACH space
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EQUILIBRIUM PROBLEMS WITH LOWER AND UPPER BOUNDS IN TOPOLOGICAL SPACES 被引量:5
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作者 丁协平 《Acta Mathematica Scientia》 SCIE CSCD 2005年第4期658-662,共5页
By employing a fixed point theorem due to Ding, Park and Jung, some existence theorems of solutions for equilibrium problems with lower and upper bounds are proved in noncompact topological spaces. These results furth... By employing a fixed point theorem due to Ding, Park and Jung, some existence theorems of solutions for equilibrium problems with lower and upper bounds are proved in noncompact topological spaces. These results further answer the open problem raised by Isac, Sehgal and Singh under much weaker assumptions. 展开更多
关键词 equilibrium problem fixed point theorem contractible space acyclic space topological space
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NONEMPTY INTERSECTION THEOREMS AND SYSTEM OF GENERALIZED VECTOR EQUILIBRIUM PROBLEMS IN PRODUCT G-CONVEX SPACES 被引量:4
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作者 DINGXie-ping 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2004年第6期618-626,共9页
By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established... By using an existence theorems of maximal elements for a family of set-valued mappings in G-convex spaces due to the author, some new nonempty intersection theorems for a family of set-valued mappings were established in noncompact product G-convex spaces. As applications, some equilibrium existence theorems for a system of generalized vector equilibrium problems were proved in noncompact product G-convex spaces. These theorems unify, improve and generalize some important known results in literature. 展开更多
关键词 family of set-valued mapping nonempty intersection theorem system of generalized vector equilibrium problem product G-convex space
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Directional Analysis of the Chaotic Superlattice around the Equilibrium Point in the Phase Space
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作者 Yan-Fei Liu Dong-Dong Yang +1 位作者 Li-Xin Wang Qi Li 《Chinese Physics Letters》 SCIE CAS CSCD 2018年第4期82-85,共4页
The recently proposed method of our research group named as directional Lyapunov exponents(DLEs) is presented. Then, DLEs are used to analyze the eigenstructure of the output phase space around the equilibrium point... The recently proposed method of our research group named as directional Lyapunov exponents(DLEs) is presented. Then, DLEs are used to analyze the eigenstructure of the output phase space around the equilibrium points. Finally, the impacts of the superlattice parameter changes on the characteristics of the output chaotic signal are analyzed. The experimental results show that parameter changes of the superlattice will affect the eigenstructure around the equilibrium points in the output phase space, and DLEs are sensitive to these changes. 展开更多
关键词 DLE Directional Analysis of the Chaotic Superlattice around the equilibrium Point in the Phase space
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QUASI_EQUILIBRIUM PROBLEMS IN NONCOMPACT GENERALIZED CONVEX SPACES 被引量:3
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作者 丁协平 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2000年第6期637-644,共8页
By applying a new fixed point theorem due to the author, some new equilibrium existence theorems of quasi-equilibrium problems are proved in noncompact generalized convex spaces. These theorems improve and generalize ... By applying a new fixed point theorem due to the author, some new equilibrium existence theorems of quasi-equilibrium problems are proved in noncompact generalized convex spaces. These theorems improve and generalize a number of important known results in recent literature. 展开更多
关键词 fixed point quasi-equilibrium problem compactly local intersection property generalized convex space
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GENERALIZED VECTOR QUASI-EQUILIBRIUM PROBLEMSIN LOCALLY G-CONVEX SPACES
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作者 丁协平 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2005年第5期563-570,共8页
Some classes of generalized vector quasi-equilibrium problems ( in short, GVQEP) are introduced and studied in locally G-convex spaces which includes most of generalized vector equilibrium problems; generalized vector... Some classes of generalized vector quasi-equilibrium problems ( in short, GVQEP) are introduced and studied in locally G-convex spaces which includes most of generalized vector equilibrium problems; generalized vector variational inequality problems, quasi-equilibrium problems and quasi-variational inequality problems as special cases. First, an equilibrium existence theorem for one person games is proved in locally G-convex spaces.. As applications, some new existence theorems of solutions for the GVQEP are established in noncompact locally G-convex spaces. These results and argument methods are new and completely different from that in recent literature. 展开更多
关键词 generalized vector quasi-equilibrium problem one person game equilibrium locally G-convex space
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On Solving a System of Generalized Mixed Equilibrium-like Problems in Hilbert Spaces
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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
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Auxiliary principle and approximation solvability for system of new generalized mixed equilibrium problems in reflexive Banach spaces
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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
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Existence and algorithm of solutions for a system of generalized mixed implicit equilibrium problems in Banach spaces
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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
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基于塔内位移观测器和均衡空间低维控制器的高塔结构振动主动控制系统
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作者 文茜茜 张弘毅 +3 位作者 陈政清 华旭刚 牛华伟 徐赵东 《振动工程学报》 EI CSCD 北大核心 2024年第7期1126-1138,共13页
高塔结构振动适合也需要主动控制技术,但需要满足位移直接观测和单点控制下的低维高效控制。本文应用现代摄像观测技术,建立了一套从塔内实时连续观测振动位移的方法,为高塔结构振动主动控制提供了最直接的位移观测器,避免了以往只能建... 高塔结构振动适合也需要主动控制技术,但需要满足位移直接观测和单点控制下的低维高效控制。本文应用现代摄像观测技术,建立了一套从塔内实时连续观测振动位移的方法,为高塔结构振动主动控制提供了最直接的位移观测器,避免了以往只能建立加速度观测器,经滤波后再与假定的外荷载结合计算输出位移的冗长过程。基于均衡系统空间变换和平衡截断法,对顶端设置主动质量块的高塔结构进行降维,可以有效保留结构的主要动力特性。以某施工状态的700 m高塔为例,进行了风振和地震的主动控制仿真分析。结果表明:以少数位移状态作为反馈信号的降维控制器的控制效果和基于全状态反馈的全维控制器基本一致,可以作为高塔结构振动的主动控制策略。 展开更多
关键词 主动控制 位移观测器 均衡空间 摄像测量 低维控制器
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利用径向力平衡飞行控制的航天器高精度轨道捕获方法
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作者 孟云鹤 侯佳睿 罗宇飞 《国防科技大学学报》 EI CAS CSCD 北大核心 2024年第2期27-35,共9页
为实现对探测器轨道形状与高度的精准调整,提出一种径向力平衡飞行的航天器连续推力控制新方法。建立连续推力平衡飞行的动力学极坐标模型,并推导出特殊条件下的解析轨道解,进一步分析边值条件,给出连续推力的控制律。利用这一平衡飞行... 为实现对探测器轨道形状与高度的精准调整,提出一种径向力平衡飞行的航天器连续推力控制新方法。建立连续推力平衡飞行的动力学极坐标模型,并推导出特殊条件下的解析轨道解,进一步分析边值条件,给出连续推力的控制律。利用这一平衡飞行控制理论,构建轨道捕获的最优控制策略。考虑推力器的推力水平,通过一次或多次的控制过程,实现对轨道形状、轨道高度及轨道相位的综合调整。数值仿真表明:利用平衡飞行的轨道控制方法,配置微小推力器的空间引力波探测器可以实现高精度的轨道捕获;该方法具有控制过程可解析、计算量小、简便、实用等特点。 展开更多
关键词 空间引力波探测器 连续推力 平衡飞行 轨道捕获 最优控制
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考虑负荷时空均衡和弹性响应的电动汽车快充电价定价策略 被引量:1
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作者 蔡小婷 杨健维 +2 位作者 廖凯 何正友 向悦萍 《电力自动化设备》 EI CSCD 北大核心 2024年第2期94-102,共9页
为了引导电动汽车有序充电,提出了一种考虑负荷时空均衡和弹性响应的电动汽车快充电价定价策略。引入交通流理论描述交通路网,建立电动汽车快充负荷时空分布模型;考虑配电网调度和电动汽车快充负荷的弹性需求,构建源-荷互动下的快充电... 为了引导电动汽车有序充电,提出了一种考虑负荷时空均衡和弹性响应的电动汽车快充电价定价策略。引入交通流理论描述交通路网,建立电动汽车快充负荷时空分布模型;考虑配电网调度和电动汽车快充负荷的弹性需求,构建源-荷互动下的快充电价定价架构,并基于潮流追踪法从时空双维度推导快充电价的计算方法;在此基础上,计及电动汽车负荷弹性响应特性,以提升配电网的负荷均衡性为目标,建立快充电价定价策略,并通过迭代算法求解该定价策略。算例仿真结果表明,所提定价策略能够有效引导电动汽车进行有序快充,激励电动汽车用户与配电网友好互动,提升负荷的时空分布均衡性。 展开更多
关键词 电动汽车 时空分布 快充电价 交通流 负荷均衡 弹性响应 源-荷互动 配电网
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蔬菜供应链:边境农贸市场及其互市实践——基于云南孟定中缅边境的田野调查
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作者 周大鸣 常蕾 《云南师范大学学报(哲学社会科学版)》 北大核心 2024年第1期113-121,共9页
云南省临沧市耿马县孟定镇,隔清水河口岸与缅甸接壤。在孟定镇的边境农贸市场之中,活跃着两种商业活动:蔬菜供应链和缅甸街生意圈。从清水河口岸升级,以及边民互市优惠政策实施以来,边境贸易得到了程序化、规模化的发展。供应链是由内... 云南省临沧市耿马县孟定镇,隔清水河口岸与缅甸接壤。在孟定镇的边境农贸市场之中,活跃着两种商业活动:蔬菜供应链和缅甸街生意圈。从清水河口岸升级,以及边民互市优惠政策实施以来,边境贸易得到了程序化、规模化的发展。供应链是由内地资本推动运作的,规模化的,具有链条延伸性质的市场;生意圈是由缅甸商人的社会人际网络交织组成的,带有社区感和生活感的,具有聚集性质的市场。两种不同的机制在农贸市场中发生了交汇,延伸和聚集之间的拉扯,糅合成了边境贸易新的动态平衡,也为活跃在其中的人们提供了新的地方性的生活可能。 展开更多
关键词 跨境贸易 市场空间 供应链 互市实践 动态平衡
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STRONGLY CONVERGENT ITERATIVE METHODS FOR SPLIT EQUALITY VARIATIONAL INCLUSION PROBLEMS IN BANACH SPACES 被引量:1
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作者 张石生 王林 +1 位作者 秦丽娟 马招丽 《Acta Mathematica Scientia》 SCIE CSCD 2016年第6期1641-1650,共10页
The purpose of this paper is to introduce and study the split equality variational inclusion problems in the setting of Banach spaces. For solving this kind of problems, some new iterative algorithms are proposed. Und... The purpose of this paper is to introduce and study the split equality variational inclusion problems in the setting of Banach spaces. For solving this kind of problems, some new iterative algorithms are proposed. Under suitable conditions, some strong convergence theorems for the sequences generated by the proposed algorithm are proved. As applications, we shall utilize the results presented in the paper to study the split equality feasibility prob- lems in Banach spaces and the split equality equilibrium problem in Banach spaces. The results presented in the paper are new. 展开更多
关键词 the split equality variational inclusion problem in Banach space split feasibilityproblem in Banach space split equilibrium problem in Banach spaces
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CONVERGENCE ANALYSIS OF A MONOTONE PROJECTION ALGORITHM IN REFLEXIVE BANACH SPACES
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作者 秦小龙 Sun Young CHO 《Acta Mathematica Scientia》 SCIE CSCD 2017年第2期488-502,共15页
In this article, fixed points of generalized asymptotically quasi-Ф-nonexpansive mappings and equilibrium problems are investigated based on a monotone projection algo- rithm. Strong convergence theorems are establis... In this article, fixed points of generalized asymptotically quasi-Ф-nonexpansive mappings and equilibrium problems are investigated based on a monotone projection algo- rithm. Strong convergence theorems are established without the aid of compactness in the framework of reflexive Banach spaces. 展开更多
关键词 Asymptotically quasi-Ф-nonexpansive mapping Banach space equilibrium problem fixed point Generalized projection
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CONVERGENCE ANALYSIS FOR SYSTEM OF EQUILIBRIUM PROBLEMS AND LEFT BREGMAN STRONGLY RELATIVELY NONEXPANSIVE MAPPING
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作者 Yekini SHEHU 《Acta Mathematica Scientia》 SCIE CSCD 2014年第4期1081-1097,共17页
In this paper, we prove strong convergence theorems for approximation of a fixed point of a left Bregman strongly relatively nonexpansive mapping which is also a solution to a finite system of equilibrium problems in ... In this paper, we prove strong convergence theorems for approximation of a fixed point of a left Bregman strongly relatively nonexpansive mapping which is also a solution to a finite system of equilibrium problems in the framework of reflexive real Banach spaces. We also discuss the approximation of a common fixed point of a family of left Bregman strongly nonexpansive mappings which is also solution to a finite system of equilibrium problems in reflexive real Banach spaces. Our results complement many known recent results in the literature. 展开更多
关键词 left Bregman strongly relatively nonexpansive mapping left Bregman projection equilibrium problem Banach spaces
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An Analytical Study on Distribution of Statically Determinate Stresses in Particulate Half Space
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作者 Wu Bingkun Center of Rock and Soil Mechanics,Southwest Jiaotong University,Chengdu 610031,China 《Journal of Modern Transportation》 1996年第2期2-20,共19页
General solution of stresses solved from the two dimensiona l system of equilibrium equations in Cartesian coordinates is characterized by the presence ... General solution of stresses solved from the two dimensiona l system of equilibrium equations in Cartesian coordinates is characterized by the presence of two families of characteristic lines along which initial stresses and discontinuities in them are transmitted intact far down to infinity.This is against our intuition and not verifiable by experimental findings. For the fundamental case of infinite uniform pressure on the upper surface,a comparison between solutions from equilibrium equations in Cartesian coordinates and from those in polar coordinates is carried out in details.The semi infinite characteristic lines in the former are bent up to exponential spirals with both ends on the upper surface in the latter.Thus,the transmission pattern from solution in polar coordinates comes closer to actual situation.However,in polar reference frame,the solution for distribution of stresses in particulate half space under surface strip pressure or so can then only be obtained from boundary value problem of second order partial differential equation. 展开更多
关键词 DISTRIBUTION of stresses PARTICULATE HALF space equations of equilibrium
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复合地层下穿高铁超大矩形盾构隧道开挖面的极限支护力 被引量:1
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作者 宁茂权 唐再兴 +2 位作者 刘顺水 麻建飞 崔光耀 《高压物理学报》 CAS CSCD 北大核心 2023年第1期180-188,共9页
为了保证超大矩形盾构隧道开挖面的稳定性,依托某超大矩形盾构隧道工程,采用理论分析、数值模拟和现场监测方法对复合地层下穿高铁超大矩形盾构隧道开挖面的极限支护力进行了研究,提出了复合地层下穿高铁超大矩形盾构隧道开挖面临界破... 为了保证超大矩形盾构隧道开挖面的稳定性,依托某超大矩形盾构隧道工程,采用理论分析、数值模拟和现场监测方法对复合地层下穿高铁超大矩形盾构隧道开挖面的极限支护力进行了研究,提出了复合地层下穿高铁超大矩形盾构隧道开挖面临界破坏模式,并基于极限平衡理论推导了极限支护力计算方法。数值模拟和现场监测结果表明:提出的极限支护力计算方法与数值模拟和现场监测的误差分别在10.40%~18.30%和11.19%~16.85%区间,说明极限支护力公式安全可靠,可应用至实际工程中。研究结果可为类似工程开挖面稳定性控制提供参考。 展开更多
关键词 矩形盾构隧道 复合地层 极限支护力 极限平衡法 近接施工
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