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On the (<i>r</i>,<i>φ</i>,<i>ψ</i>)-Suzuki Contraction for the Multi-Valued Mappings
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作者 Zamir Selko 《Journal of Applied Mathematics and Physics》 2021年第2期211-219,共9页
In this work we try to give a new contraction type in multi-valued mapping on complete metric spaces. We prove the existence of fixed point for (<i>r</i>,<i>φ</i>,<i>ψ</i>)-Suzuki... In this work we try to give a new contraction type in multi-valued mapping on complete metric spaces. We prove the existence of fixed point for (<i>r</i>,<i>φ</i>,<i>ψ</i>)-Suzuki contraction in such spaces. Around our paper, the function <i>ψ</i> is absolutely continuous, and in this case, the contraction proposed by as has a fixed point. 展开更多
关键词 Suzuki-Contraction multi-valued mappings Fixed Point Theorem Absolutely Continuous Functions
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Fixed Point of a Countable Family of Uniformly Totally Quasi- <i>&Oslash</i>-Asymptotically Nonexpansive Multi-Valued Mappings in Reflexive Banach Spaces with Applications 被引量:1
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作者 Yi Li 《Applied Mathematics》 2013年第9期6-12,共7页
The purpose of this article is to discuss a modified Halpern-type iteration algorithm for a countable family of uniformly totally quasi- ? -asymptotically nonexpansive multi-valued mappings and establish some strong c... The purpose of this article is to discuss a modified Halpern-type iteration algorithm for a countable family of uniformly totally quasi- ? -asymptotically nonexpansive multi-valued mappings and establish some strong convergence theorems under certain conditions. We utilize the theorems to study a modified Halpern-type iterative algorithm for a system of equilibrium problems. The results improve and extend the corresponding results of Chang et al. (Applied Mathematics and Computation, 218, 6489-6497). 展开更多
关键词 multi-valued mapping Totally Quasi- Ø -Asymptotically NONEXPANSIVE Countable FAMILY of UNIFORMLY Totally Quasi- Ø -Asymptotically NONEXPANSIVE multi-valued mappings Firmly Convergence
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基于Maps统计分析的冶金尘泥还原焙烧机理
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作者 李强 陈铁军 +3 位作者 陈佳乐 黄宇平 李圣辉 李奇勇 《钢铁》 北大核心 2026年第1期188-200,共13页
冶金尘泥的转底炉处理工艺是目前钢铁行业采用的主要处置工艺,但在实际生产过程中经常出现还原焙烧不均匀的问题。利用微观扫描电子显微镜(scanning electron microscopy,SEM)分析结合宏观Maps统计分析,对冶金尘泥还原焙烧的不均匀性进... 冶金尘泥的转底炉处理工艺是目前钢铁行业采用的主要处置工艺,但在实际生产过程中经常出现还原焙烧不均匀的问题。利用微观扫描电子显微镜(scanning electron microscopy,SEM)分析结合宏观Maps统计分析,对冶金尘泥还原焙烧的不均匀性进行详细的可视化、数据化分析。研究结果表明,冶金尘泥在焙烧温度为1250℃、焙烧时间为15 min的条件下,熟球金属化率达到89.04%、脱锌率达到81.66%、抗压强度达到3.03 kN,熟球金属化率和脱锌率会随着焙烧温度提高和焙烧时间延长而进一步提高,但熟球抗压强度在焙烧时间过长时反而逐渐降低;熟球Maps统计分析表明,提高焙烧温度更有利于提高熟球外圈和下部的还原程度,而延长焙烧时间也更有利于提高熟球下部还原程度,但对熟球内部和外圈还原程度的提升作用比较相似;同时,提高焙烧温度也更有利于提升熟球下部的致密化程度,降低熟球上、下孔隙结构的不均匀性,进而显著提高熟球整体抗压强度;但焙烧时间过长会导致熟球中小孔隙融合为大孔隙,反而降低熟球抗压强度。此外,熟球中硅酸盐(渣相)和浮氏体(FexO)更容易破裂,而金属铁(Fe)可延缓裂纹蔓延,因而,适当提高熟球金属化率、降低硅酸盐(渣相)含量也有利于提高其抗压强度。基于Maps统计分析探究了冶金尘泥还原焙烧过程中物相及孔隙的变化规律,分析结果可以为转底炉工艺处理冶金尘泥的生产实践提供指导和建议。 展开更多
关键词 冶金尘泥 焙烧温度 焙烧时间 maps统计分析 金属化率 抗压强度 转底炉 熟球
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基于Connectivity Map的药物重定位评价维拉帕米作为治疗帕金森病的药物
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作者 新吉乐 刘晶 +6 位作者 张欣翼 郭家缘 韩文卓 孙怡馨 赵乐 冯卫生 郑晓珂 《中国临床药理学与治疗学》 北大核心 2026年第1期14-27,共14页
目的:筛选调控帕金森病(Parkinson's disease,PD)发病关键基因及相关转录因子表达的小分子化合物。方法:分析PD患者的基因表达谱数据,筛选PD发病关键基因及转录因子。Connectivity Map(CMap)筛选可调控转录因子表达的小分子药物,并... 目的:筛选调控帕金森病(Parkinson's disease,PD)发病关键基因及相关转录因子表达的小分子化合物。方法:分析PD患者的基因表达谱数据,筛选PD发病关键基因及转录因子。Connectivity Map(CMap)筛选可调控转录因子表达的小分子药物,并在6-羟基多巴胺(6-OHDA)诱导损伤的PC12细胞和PD小鼠模型评价其PD治疗作用。结果:维拉帕米(verapamil,Ver)为潜在的候选药物。Ver对6-OHDA损伤的PC12细胞具有保护作用,同时对6-OHDA诱导的PAX5、LEF1、MTF1、IKZF3和SP140等转录因子,以及ITGA6、CDH1、CD40、ESR1、SMAD3、CXCR4等PD发病基因的表达具有调控作用。PD模型小鼠中,Ver可对α-突触核蛋白(α-Syn)表达有一定抑制作用,但对上述PD发病基因及其转录因子和调控作用较弱。结论:Ver对PD的治疗作用部分依赖于对PD发病基因及其相关转录因子的调控作用。 展开更多
关键词 帕金森病 转录因子 Connectivity map 维拉帕米 6-羟基多巴胺
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Native T1 mapping值显著延长心脏纤维瘤一例
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作者 文涛 张辉 +3 位作者 甘铁军 胡万均 李世兰 张静 《磁共振成像》 北大核心 2026年第1期120-122,共3页
本研究为回顾性研究,遵守《赫尔辛基宣言》,并经兰州大学第二医院伦理委员会审核批准,免除受试者知情同意,批准文号:2025A-547。患儿,女,2月8天,因“发现心脏肿瘤2月”于2024年11月就诊于我院,患儿于2个月前出生后外院检查提示左心室肿... 本研究为回顾性研究,遵守《赫尔辛基宣言》,并经兰州大学第二医院伦理委员会审核批准,免除受试者知情同意,批准文号:2025A-547。患儿,女,2月8天,因“发现心脏肿瘤2月”于2024年11月就诊于我院,患儿于2个月前出生后外院检查提示左心室肿瘤,未予特殊诊治,现为进一步明确诊治收住我院心脏外科。患儿足月(38+6周)、顺产、无心脏肿瘤家族史。查体:心前区无隆起,心界不大,心音有力、律齐,胸骨左缘第2~3肋间可闻及3/6及吹风样杂音,静息血氧饱和度100%。 展开更多
关键词 心脏肿瘤 心脏纤维瘤 多模态磁共振成像 心脏磁共振 Native T1 mapping
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T2 Mapping联合DWI序列评估直肠癌脉管侵犯价值研究
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作者 李茜玮 陈安良 +2 位作者 王楠 林良杰 刘爱连 《中国CT和MRI杂志》 2026年第1期149-152,共4页
目的探讨T2 mapping与DWI序列预测直肠癌脉管侵犯的价值。方法回顾性分析经本院行3.0T MRI扫描且经术后病理证实的直肠癌脉管侵犯13例,脉管非侵犯20例,2名观察者分别于瘤体显示最大层面参考增强动脉期图像及DWI图像于T2 mapping及ADC图... 目的探讨T2 mapping与DWI序列预测直肠癌脉管侵犯的价值。方法回顾性分析经本院行3.0T MRI扫描且经术后病理证实的直肠癌脉管侵犯13例,脉管非侵犯20例,2名观察者分别于瘤体显示最大层面参考增强动脉期图像及DWI图像于T2 mapping及ADC图像上测量病灶T2值及ADC值。采用组内相关系数(intraclass correlation cofficient,ICC)评估两名观察者测量参数值的一致性。采用独立样本t检验或Mann-Whitney U检验分析两组病例各参数的差异。采用Logistic回归计算有统计学差异的参数联合评估直肠癌LVI的预测值。采用ROC曲线评估有差异参数单独或联合的诊断效能,并利用De-Long检验比较各ROC曲线间的差异。采用Pearson相关性检验分析两参数值的相关性。结果2名观察者测量T2值及ADC值一致性好(ICC>0.75)。脉管侵犯组的T2值及ADC值低于非脉管侵犯组(77.15±6.95ms、0.69±0.15mm^(2)/s vs 87.04±7.75ms、0.90±0.21 mm^(2)/s,P<0.05)。ADC值与ADC-T2联合鉴别两组疾病的AUC值比较差异具有统计学意义(P=0.036)。结论T2 mapping和DWI序列可预测直肠癌脉管侵犯,两序列联合效能提升,因此T2值与ADC值联合可为临床诊疗直肠癌脉管侵犯提供参考信息。 展开更多
关键词 直肠癌 脉管侵犯 磁共振成像 T2 mapping成像 弥散加权成像
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ALGORITHMS FOR A SYSTEM OF GENERALIZED MIXED EQUILIBRIUM PROBLEMS AND A COUNTABLE FAMILY OF SOME NONLINEAR MULTI-VALUED NONEXPANSIVE-TYPE MAPS
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作者 Ogonnaya Michael ROMANUS Ukamaka Victoria NNYABA Monday Ogudu NNAKWE 《Acta Mathematica Scientia》 SCIE CSCD 2018年第6期1805-1820,共16页
In this paper, relaxed iterative algorithms of Krasnoselskii-type and Halpern-type that approximate a solution of a system of a generalized mixed equilibrium problem anda common fixed point of a countable family of to... In this paper, relaxed iterative algorithms of Krasnoselskii-type and Halpern-type that approximate a solution of a system of a generalized mixed equilibrium problem anda common fixed point of a countable family of totally quasi-C-asymptotically nonexpansivemulti-valued maps are constructed. Strong convergence of the sequence generated by thesealgorithms is proved in uniformly smooth and strictly convex real Banach spaces with Kadec-Klee property. Furthermore, several applications of our theorems are also presented. Finally,our theorems are significant improvements on several important recent results for this classof nonlinear problems. 展开更多
关键词 Halpern-type algorithm Krasnoselskii-type algorithm system of generalizedmixed equilibrium problems totally quasi-C-asymptotically nonexpansive multi-valued maps equally continuous maps
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COMMON FIXED POINT THEOREMS FOR MULTI-VALUED MAPS
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作者 Boško Damjanovic Bessem Samet Calogero Vetro 《Acta Mathematica Scientia》 SCIE CSCD 2012年第2期818-824,共7页
We establish some results on coincidence and common fixed points for a twopair of multi-valued and single-valued maps in complete metric spaces. Presented theorems generalize recent results of Gordji et al [4] and sev... We establish some results on coincidence and common fixed points for a twopair of multi-valued and single-valued maps in complete metric spaces. Presented theorems generalize recent results of Gordji et al [4] and several results existing in the literature. 展开更多
关键词 Coincidence point common fixed point multi-valued maps
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The Uniform Convergence Topology On Multi-valued Mapping Space
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作者 辛玉梅 谢鸿政 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1996年第2期1-5,共5页
Some convergences of topology are discussed. The definitions of almost uniform convergence topology and compatible topology are given. It is shown that the quasiuniform convergence and generalized uniform convergence ... Some convergences of topology are discussed. The definitions of almost uniform convergence topology and compatible topology are given. It is shown that the quasiuniform convergence and generalized uniform convergence have no compatible topology,but the almost uniform convergence has compatible topology. Moreover, the description of all uniform convergence limits and their mutual relation are investigated[1]. 展开更多
关键词 ss: TOPOLOGICAL SPACE multi-valued mapping limit-cluster line
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Common Fixed Point Theorems of Multi-Valued Maps in Ultra Metric Space
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作者 Qiulin Wang Meimei Song 《Applied Mathematics》 2013年第2期417-420,共4页
We establish some results on coincidence and common fixed point for a two pair of multi-valued and single-valued maps in ultra metric spaces.
关键词 multi-valued maps COINCIDENCE POINT Common Fixed POINT
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MapColor-Agent:融合大语言模型与多智能体的行政区划图配色框架
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作者 魏智威 杨乃 +3 位作者 王一杰 廖华 周梦杰 许文嘉 《测绘学报》 北大核心 2026年第2期359-370,共12页
近年来,大语言模型在语义理解与任务推理方面取得显著进展,为地图设计智能化提供了一种技术途径。本文以行政区划图的配色设计为研究对象,提出并构建了一个融合大语言模型与多智能体的交互式智能地图配色框架——MapColor-Agent。该系... 近年来,大语言模型在语义理解与任务推理方面取得显著进展,为地图设计智能化提供了一种技术途径。本文以行政区划图的配色设计为研究对象,提出并构建了一个融合大语言模型与多智能体的交互式智能地图配色框架——MapColor-Agent。该系统以大语言模型为语义理解核心,通过多智能体实现任务分解与过程协同,并结合自然语言和图形化操作界面,支持用户以更直观的方式生成符合需求的地图配色方案。本文采用系统可用性量表与半结构化访谈评估系统性能。结果表明,MapColor-Agent的总体可用性得分为77.9,达到良好水平。用户普遍认为系统学习成本低、操作流程清晰、交互体验自然,且具有较高的可理解性和控制性。差异性分析显示,熟悉地图配色的用户在学习效率与系统复杂度感知方面得分更高,说明知识背景对系统使用效果具有一定影响。访谈结果进一步表明,系统在语义理解与任务引导方面表现出优势,但在复杂语义解析与生成稳定性方面仍有改进空间。研究结果验证了大语言模型与智能体协同架构在地图配色设计中的可行性,可为未来基于语义推理与多模态交互的地图智能设计提供参考。 展开更多
关键词 大语言模型 多智能体系统 人机交互 地图配色设计 行政区划图
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Hot Compression Deformation Behavior and Processing Maps of Mg-Zn-Mn(-Sn)-Ca Alloy
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作者 Chen Xia Zhu Yulong +2 位作者 Liu Quanyi Zhang Dingfei Pan Fusheng 《稀有金属材料与工程》 北大核心 2026年第3期627-635,共9页
The hot compression deformation behavior of Mg-6Zn-1Mn-0.5Ca(ZM61-0.5Ca)and Mg-6Zn-1Mn-2Sn-0.5Ca(ZMT612-0.5Ca)alloys was investigated at deformation temperatures ranging from 250℃to 400℃and strain rates varying from... The hot compression deformation behavior of Mg-6Zn-1Mn-0.5Ca(ZM61-0.5Ca)and Mg-6Zn-1Mn-2Sn-0.5Ca(ZMT612-0.5Ca)alloys was investigated at deformation temperatures ranging from 250℃to 400℃and strain rates varying from 0.001 s^(-1) to 1 s^(-1).The results show that the addition of Sn promotes dynamic recrystallization(DRX),and CaMgSn phases can act as nucleation sites during the compression deformation.Flow stress increases with increasing the strain rate and decreasing the temperature.Both the ZM61-0.5Ca and ZMT612-0.5Ca alloys exhibit obvious DRX characteristics.CaMgSn phases can effectively inhibit dislocation motion with the addition of Sn,thus increasing the peak fl ow stress of the alloy.The addition of Sn increases the hot deformation activation energy of the ZM61-0.5Ca alloy from 199.654 kJ/mol to 276.649 kJ/mol,thus improving the thermal stability of the alloy.For the ZMT612-0.5Ca alloy,the optimal hot deformation parameters are determined to be a deformation temperature range of 350–400℃and a strain rate range of 0.001–0.01 s^(-1). 展开更多
关键词 hot deformation constitutive equation processing map deformation activation energy magnesium alloy
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基于网络药理学及动物实验探讨补阳还五汤通过miR-30e-5p调控MAP3K5治疗低氧性肺动脉高压作用机制
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作者 王凯心 秦一冰 曲妮妮 《辽宁中医药大学学报》 2026年第3期15-24,共10页
目的基于网络药理学与动物实验探讨补阳还五汤对低氧性肺动脉高压(hypoxic pulmonary hypertension,HPH)大鼠血管重构的影响及其作用机制。方法(1)网络药理学实验。使用TCMSP、HERB、GeneCards、OMIM以及UniProt等公共数据库,筛选补阳... 目的基于网络药理学与动物实验探讨补阳还五汤对低氧性肺动脉高压(hypoxic pulmonary hypertension,HPH)大鼠血管重构的影响及其作用机制。方法(1)网络药理学实验。使用TCMSP、HERB、GeneCards、OMIM以及UniProt等公共数据库,筛选补阳还五汤和肺动脉高压(pulmonary arterial hypertension,PAH)的靶点基因并标准化;进行蛋白互作(protein-protein interaction,PPI)网络以及基因本体论(gene ontology,GO)和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)通路富集分析;制作靶点交集韦恩图和“药物-成分-靶点-疾病”网络图;建立miRNAs-mRNAs网络互作图。(2)动物实验。将SD雄性大鼠50只随机分成5组,分别为空白组、模型组、中药低剂量组、中药中剂量组及中药高剂量组,每组10只,使用低氧暴露法建立HPH大鼠模型。4周后检测各组大鼠右心室压力;免疫组化测定肺小动脉细胞核抗原(proliferating cell nuclear antigen,PCNA)的表达;ELISA法检测血清中P27^(kip1)的表达;Western blot法检测肺组织增殖、凋亡及通路相关蛋白的表达水平;实时定量逆转录聚合酶链反应(reverse transcription quantitative PCR,RT-qPCR)法检测各组大鼠肺组织中miR-30e-5p和丝裂原活化蛋白激酶激酶激酶5信号通路(mitogen-activated protein kinase kinase kinase 5 signaling pathway,MAP3K5)mRNA的表达。结果(1)网络药理学结果显示,补阳还五汤活性成分109个,相关靶点495个,疾病相关靶点7789个,交集靶点235个;GO功能富集分析共获得1038个条目,分别为生物过程(biological process,BP)774条、细胞组分(cellular component,CC)91条及分子功能(molecular function,MF)173条,KEGG富集结果175条;网络图分析出前5个主要疾病通路为肿瘤坏死因子(tumor necrosis factor,TNF)信号通路、白细胞介素-17(interleukin-17,IL-17)信号通路、晚期糖基化终末产物-其受体(advanced glycation end productsreceptor for AGE,AGE-RAGE)信号通路、MAP3K5和lipid and atherosclerosis信号通路;miRNAs-mRNAs网络互作图得出miR-30e-5p和MAP3K5关系密切。(2)与空白组相比,模型组右心室压力显著上升,肺小动脉结构改变;MAP3K5 mRNA及MAP3K5、B-细胞淋巴瘤2(B-cell lymphoma 2,Bcl-2)蛋白表达增加(P<0.01);miR-30e-5p mRNA及P27^(kip1)、细胞色素C(cytochrome C,Cyt C)、Bcl-2关联X蛋白(Bcl-2-associated X protein,Bax)、半胱天冬酶-3(Caspase-3)及半胱天冬酶-9(Caspase-9)蛋白表达降低(P<0.01);与模型组相比,中药各剂量组则显著降低了右心室压力,改善了肺小动脉结构,MAP3K5 mRNA及MAP3K5、Bcl-2蛋白表达减低(P<0.01),miR-30e-5p mRNA、P27^(kip1)、Cyt C、Bax、Caspase-3及Caspase-9蛋白表达升高(P<0.01或P<0.05)。结论该网络药理学和实验基本阐明,补阳还五汤可以通过miR-30e-5p调控MAP3K5,从而抑制增殖和促进凋亡,改善HPH大鼠肺血管重构,降低肺动脉压力。 展开更多
关键词 低氧性肺动脉高压 补阳还五汤 miR-30e-5p map3K5
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A Comprehensive Literature Review of AI-Driven Application Mapping and Scheduling Techniques for Network-on-Chip Systems
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作者 Naveed Ahmad Muhammad Kaleem +5 位作者 Mourad Elloumi Muhammad Azhar Mushtaq Ahlem Fatnassi Mohd Fazil Anas Bilal Abdulbasit A.Darem 《Computer Modeling in Engineering & Sciences》 2026年第1期118-155,共38页
Network-on-Chip(NoC)systems are progressively deployed in connecting massively parallel megacore systems in the new computing architecture.As a result,application mapping has become an important aspect of performance ... Network-on-Chip(NoC)systems are progressively deployed in connecting massively parallel megacore systems in the new computing architecture.As a result,application mapping has become an important aspect of performance and scalability,as current trends require the distribution of computation across network nodes/points.In this paper,we survey a large number of mapping and scheduling techniques designed for NoC architectures.This time,we concentrated on 3D systems.We take a systematic literature review approach to analyze existing methods across static,dynamic,hybrid,and machine-learning-based approaches,alongside preliminary AI-based dynamic models in recent works.We classify them into several main aspects covering power-aware mapping,fault tolerance,load-balancing,and adaptive for dynamic workloads.Also,we assess the efficacy of each method against performance parameters,such as latency,throughput,response time,and error rate.Key challenges,including energy efficiency,real-time adaptability,and reinforcement learning integration,are highlighted as well.To the best of our knowledge,this is one of the recent reviews that identifies both traditional and AI-based algorithms for mapping over a modern NoC,and opens research challenges.Finally,we provide directions for future work toward improved adaptability and scalability via lightweight learned models and hierarchical mapping frameworks. 展开更多
关键词 Application mapping mapping techniques NETWORK-ON-CHIP system on chip optimisation
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ESTIMATES OF ALL TERMS OF HOMOGENEOUS POLYNOMIAL EXPANSIONS FOR THE SUBCLASSES OF G-PARAMETRIC STARLIKE MAPPINGS OF COMPLEX ORDER IN SEVERAL COMPLEX VARIABLES
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作者 Liangpeng XIONG Qingchao WANG Xiaoying SIMA 《Acta Mathematica Scientia》 2025年第4期1555-1566,共12页
In this paper,the class of starlike functions of complex order γ(γ∈ℂ−{0})is extended from the case on unit disk U=(z∈C:|z|<1)to the case on the unit ball B in a complex Banach space or the unit polydisk U^(n) i... In this paper,the class of starlike functions of complex order γ(γ∈ℂ−{0})is extended from the case on unit disk U=(z∈C:|z|<1)to the case on the unit ball B in a complex Banach space or the unit polydisk U^(n) in C^(n).Let g be a convex function in U. We mainly establish the sharp bounds of all terms of homogeneous polynomial expansions for a subclass of g-parametric starlike mappings of complex order γ on B (resp.U^(n))when the mappings f are k-fold symmetric, k ∈ N. Our results partly solve the Bieberbach conjecture in several complex variables and generalize some prior works. 展开更多
关键词 class starlike functions complex order g parametric starlike mappings unit polydisk bieberbach co convex function homogeneous polynomial expansions banach space
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Suzuki-Type(μ,v)-Weak Contraction for the Hesitant Fuzzy Soft Set Valued Mappings with Applications in Decision Making
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作者 Muhammad Sarwar Rafiq Alam +2 位作者 Kamaleldin Abodayeh Saowaluck Chasreechai Thanin Sitthiwirattham 《Computer Modeling in Engineering & Sciences》 2025年第5期2213-2236,共24页
In this manuscript,the notion of a hesitant fuzzy soft fixed point is introduced.Using this notion and the concept of Suzuki-type(μ,ν)-weak contraction for hesitant fuzzy soft set valued-mapping,some fixed point res... In this manuscript,the notion of a hesitant fuzzy soft fixed point is introduced.Using this notion and the concept of Suzuki-type(μ,ν)-weak contraction for hesitant fuzzy soft set valued-mapping,some fixed point results are established in the framework of metric spaces.Based on the presented work,some examples reflecting decision-making problems related to real life are also solved.The suggested method’s flexibility and efficacy compared to conventional techniques are demonstrated in decision-making situations involving uncertainty,such as choosing the best options in multi-criteria settings.We noted that the presented work combines and generalizes two major concepts,the idea of soft sets and hesitant fuzzy set-valued mapping from the existing literature. 展开更多
关键词 Hesitant fuzzy soft set valued mapping Suzuki-type(μ ν)-weak contraction fixed point decision making problem
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Design of a Patrol and Security Robot with Semantic Mapping and Obstacle Avoidance System Using RGB-D Camera and LiDAR
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作者 Shu-Yin Chiang Shin-En Huang 《Computers, Materials & Continua》 2026年第4期1735-1753,共19页
This paper presents an intelligent patrol and security robot integrating 2D LiDAR and RGB-D vision sensors to achieve semantic simultaneous localization and mapping(SLAM),real-time object recognition,and dynamic obsta... This paper presents an intelligent patrol and security robot integrating 2D LiDAR and RGB-D vision sensors to achieve semantic simultaneous localization and mapping(SLAM),real-time object recognition,and dynamic obstacle avoidance.The system employs the YOLOv7 deep-learning framework for semantic detection and SLAM for localization and mapping,fusing geometric and visual data to build a high-fidelity 2D semantic map.This map enables the robot to identify and project object information for improved situational awareness.Experimental results show that object recognition reached 95.4%mAP@0.5.Semantic completeness increased from 68.7%(single view)to 94.1%(multi-view)with an average position error of 3.1 cm.During navigation,the robot achieved 98.0%reliability,avoided moving obstacles in 90.0%of encounters,and replanned paths in 0.42 s on average.The integration of LiDAR-based SLAMwith deep-learning–driven semantic perception establishes a robust foundation for intelligent,adaptive,and safe robotic navigation in dynamic environments. 展开更多
关键词 RGB-D semantic mapping object recognition obstacle avoidance security robot
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High‑density genetic mapping enhances genomic selection accuracy for complex traits in Populus
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作者 Chenchen Guo Tongming Yin Suyun Wei 《Journal of Forestry Research》 2026年第2期290-304,共15页
Populus species,important economic species combining rapid growth with broad ecological adaptability,play a critical role in sustainable forestry and bioenergy production.In this study,we performed whole-genome resequ... Populus species,important economic species combining rapid growth with broad ecological adaptability,play a critical role in sustainable forestry and bioenergy production.In this study,we performed whole-genome resequencing of 707 individuals from a full-sib family to develop comprehensive single nucleotide polymorphism(SNP)markers and constructed a high-density genetic linkage map of 19 linkage groups.The total genetic length of the map reached 3623.65 cM with an average marker interval of 0.34 cM.By integrating multidimensional phenotypic data,89 quantitative trait loci(QTL)associated with growth,wood physical and chemical properties,disease resistance,and leaf morphology traits were identified,with logarithm of odds(LOD)scores ranging from 3.13 to 21.72 Notably,pleiotropic analysis revealed significant colocaliza and phenotypic variance explained between 1.7% and 11.6%.-tion hotspots on chromosomes LG1,LG5,LG6,LG8,and LG14,with epistatic interaction network analysis confirming genetic basis of coordinated regulation across multiple traits.Functional annotation of 207 candidate genes showed that R2R3-MYB and bHLH transcription factors and pyruvate kinase-encoding genes were significantly enriched,suggesting crucial roles in lignin biosynthesis and carbon metabolic pathways.Allelic effect analysis indicated that the frequency of favorable alleles associated with target traits ranged from 0.20 to 0.55.Incorporation of QTL-derived favorable alleles as random effects into Bayesian-based genomic selection models led to an increase in prediction accuracy ranging from 1% to 21%,with Bayesian ridge regression as the best predictive model.This study provides valuable genomic resources and genetic insights for deciphering complex trait architecture and advancing molecular breeding in poplar. 展开更多
关键词 Genomic selection Genetic map Quantitative trait loci GROWTH Disease resistance
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Cascading Class Activation Mapping:A Counterfactual Reasoning-Based Explainable Method for Comprehensive Feature Discovery
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作者 Seoyeon Choi Hayoung Kim Guebin Choi 《Computer Modeling in Engineering & Sciences》 2026年第2期1043-1069,共27页
Most Convolutional Neural Network(CNN)interpretation techniques visualize only the dominant cues that the model relies on,but there is no guarantee that these represent all the evidence the model uses for classificati... Most Convolutional Neural Network(CNN)interpretation techniques visualize only the dominant cues that the model relies on,but there is no guarantee that these represent all the evidence the model uses for classification.This limitation becomes critical when hidden secondary cues—potentially more meaningful than the visualized ones—remain undiscovered.This study introduces CasCAM(Cascaded Class Activation Mapping)to address this fundamental limitation through counterfactual reasoning.By asking“if this dominant cue were absent,what other evidence would the model use?”,CasCAM progressively masks the most salient features and systematically uncovers the hierarchy of classification evidence hidden beneath them.Experimental results demonstrate that CasCAM effectively discovers the full spectrum of reasoning evidence and can be universally applied with nine existing interpretation methods. 展开更多
关键词 Explainable AI class activation mapping counterfactual reasoning shortcut learning feature discovery
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