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（G, s）-Transitive Graphs of Valency 7

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Algebra Colloquium 2016年第3期23卷 493-500页

作者： Songtao Guo Yantao Li xiaohui hua School of Mathematics and Statistics Henan University of Science and Technology Luoyang Henan 471023 China College of Arts and Science Beijing Union University Beijing 100091 China College of Mathematics and Information Science Henan Normal University Xinxiang Henan 453007 China

Let X be a finite simple undirected graph and G an automorphism group of X. If G is transitive on s-arcs but not on （s ＋ 1）-arcs then X is called （G, s）-transitive. Let X be a connected （G, s）-transitive graph of a prime valency p, and Gv the vertex stabilizer of a vertex v E V（X） in G. For the case p = 3, the exact structure of Gv has been determined by Djokovid and Miller in [Regular groups of automorphisms of cubic graphs, J. Combin. Theory （Ser. B） 29 （1980） 195-230]. For the case p = 5, all the possibilities of Gv have been given by Guo and Feng in [A note on pentavalent s-transitive graphs, Discrete Math. 312 （2012） 2214-2216]. In this paper, we deal with the case p = 7 and determine the exact structure of the vertex stabilizer Gv.

关键词： symmetric graph s-transitive graph (G s)-transitive graph

Numerical Simulation of Flow and Temperature Distribution in a Bottom-Blown Copper Bath

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Fluid Dynamics & Materials Processing 2025年第1期21卷 121-140页

作者： Teng Xia xiaohui Zhang Ding Ma Zhi Yang Xinting Tong Yutang Zhao hua Wang State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming650093China Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming650093China Yimen COPPER Corp.Ltd Yuxi651100China Daye Nonferrous Metallurgical Ltd. Huangshi435000China

Smelting with oxygen bottom blowing is one of the main methods used in the frame of copper *** this approach,feed materials and oxygen-enriched air are introduced in reversed order to enhance multiphaseflow within the *** the flow structure and temperature distribution in this setup is crucial foroptimizing *** this study,gas-liquid interactions,and temperature profiles under varying air-injectionconditions are examined by means of numerical simulation for a 3.2 m×20 m *** results indicate that thehigh-velocity regions are essentially distributed near the lance within the reaction region and the flue gas outlet,while low-velocity regions are located close to the furnace walls on both side of the reaction *** regionsappear in the sedimentation region,with gas velocities surpassing those of the molten *** the injection rateincreases from 0.50 to 0.80 Nm3/s,the stabilization time of the average liquid surface velocity decreases from 2.6 sto 1.9 s,exhibiting a similar trend to the gas *** stabilization,the average liquid surface velocity risesfrom 0.505 to 0.702 m/*** average turbulent kinetic energy(TKE)of the fluid in the molten bath increases from0.095 to 0.162 m^(2)/s^(2).The proportion of the area distribution with TKE greater than 0.10 m^(2)/s^(2) and the gas holdupat steady state both rise with an increase in the injection *** maximum splashing height of the melt growsfrom approximately 0.756 to 1.154 m,with the affected area expanding from 14.239 to 20.498 m^(2).Under differentworking conditions with varying injection quantities,the average temperature changes in melt zone and flue gaszone of the furnace are *** temperature in the melt and in the flue-gas zone spans the interval 1200℃–1257℃,and 1073℃–1121℃,*** temperature distribution of the melt and flue gas reveals a patterncharacterized by elevated temperatures in the reaction zone,gradually transitioning

关键词： Copper smelting bottom-blown melting furnace flow characteristics temperature distribution numerical simulation

解析日语常用动词的语义网络———以「に」类常用动词为例

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语文学刊 2011年第2期 8-9页

作者：华晓会黑龙江大学东语学院

利用认知语言学的理论对日语「に」类常用动词的家族相似性以及原始词根词「に」的模糊语义进行了剖析,发现假名「に」就是「に」类常用动词中承载共同模糊语义的重要部分。尽管「に」类常用动词所表达的意义千差万别,但都与相似、变形... 详细信息

利用认知语言学的理论对日语「に」类常用动词的家族相似性以及原始词根词「に」的模糊语义进行了剖析,发现假名「に」就是「に」类常用动词中承载共同模糊语义的重要部分。尽管「に」类常用动词所表达的意义千差万别,但都与相似、变形、浑浊、远离有关。相似、变形、浑浊、远离就是本类动词的共同语义特征,并由此推断出所有的「に」类常用动词处在一个模糊的范畴中,由一个复杂的、相互交叉的相似性网络系缚在一起。

关键词：日语「に」类常用动词家族相似性语义网络

Crystalline behaviors and phase transition during the manufacture of fine denier PA6 fibers

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Science China Chemistry 2009年第11期52卷 1835-1842页

作者： ZHANG ChengFeng LIU YuHai LIU ShaoXuan LI HuiZhen huaNG Kun PAN Qinghua hua xiaohui HAO ChaoWei MA QingFang LV ChangYou LI WeiHong YANG ZhanLan ZHAO Ying WANG DuJin LAI GuoQiao JIANG JianXiong XU YiZhuang WU JinGuang Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Engineering PlasticsJoint Laboratory for Polymer Science and MaterialsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Key Laboratory of Organosilicon Chemistry and Material Technology Ministry of Education Hangzhou Normal UniversityHang-zhou 310012China College of Chemistry and Environmental Science Henan Normal UniversityXinxiang 453007China Graduate University of Chinese Academy of Sciences Beijing 100190China

Recently we have successfully produced fine denier PA6 fibers by using additives containing lanthanide ***,crystallization and phase transition of PA6 fibers during spinning and drawing processes were *** the spinning process,β phase crystal could be obtained in as-spun PA6 fibers which were produced with relatively high melt draw ratio,while γ phase crystal predominated when the melt draw ratio was relatively low.β phase crystal,whose behaviors are similar with those of γ phase by FT-IR and XRD characterization,could be transformed to α form easily when PA6 fibers are immersed in boiling ***,γ phase crystal of PA6 remains unchanged in boiling ***,β and γ phase crystals of PA6 can be differentiated by the crystalline behaviors of PA6 fibers after treatment in boiling *** experiments demonstrate that the β phase can also be produced during a drawing process where a phase transformation from γ to α *** other words,β phase may act as an intermediate state during the phase transformation.

关键词： nylon 6 fiber crystallization FT-IR XRD

New insight into the origin and evolution of the flora and fauna of Hainan Island,China

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Science China Earth Sciences 2025年第1期68卷 52-61页

作者： hua ZHU Center for Integrative Conservation Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesYunnan International Joint Laboratory of Southeast Asia Biodiversity ConservationYunnan Key Laboratory for the Conservation of Tropical Rainforests and Asian ElephantsMengla666303China

The origin of the biota of Hainan Island,China,remains a fundamental scientific *** studies on the biota,geological tectonics,and paleomagnetism proposed that during the Eocene,Hainan Island connected Vietnam and Guangxi,and then moved to the southeast to reach its present *** review mainly discusses its biota origin from molecular phylogeny and palaeobotanical *** formation and evolution of the biological groups of Hainan Island were identified via research on their genomes,phylogeny,and molecular *** research showed that the genera and species that appeared and diverged early in their evolution(i.e.,before the Miocene)can be explained by the land connection between Hainan Island,Vietnam,and Guangxi during the *** to Southeast Asian tectonic theory,in the Middle Miocene(at about 15 million years ago),Hainan Island had moved to its present *** population and genetic divergence of species with late divergence times(after 15 Ma)can be reasonably explained by the close proximity(or land connection)between Hainan Island and the Leizhou Peninsula,enabling genetic communication between Hainan Island and the Chinese mainland,but have exceptional *** have been obtained through palaeobotanical studies,showing that in the Eocene-Oligocene period,southwest China and Hainan Island had subtropical vegetation and ***,the fossil group in southeast China(in Maoming,near present-day Hainan Island)in the Late Eocene indicated a tropical rainforest vegetation and *** suggests that in the Paleogene,Hainan Island may have been located near or on the southwest border of Guangxi and northern Vietnam,rather than in its present *** floristic division of the flora of Hainan Island basically presents a northeast-southwest inclined distribution *** pattern can be explained by the counterclockwise rotation of Hainan Island during its movement to the southeast as prop

关键词： Molecular phylogeny Biogeography Paleobotany Origin of flora and fauna Hainan Island of China

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基于单值中智集的投资决策方案优选模型

计算机应用研究 2020年第10期37卷 2996-3000页

作者：刘庆化小会新乡学院数学与统计学院河南新乡453003 河南师范大学数学与信息科学学院河南新乡453007

为了优化投资决策方案优选模型,提出一个基于单值中智环境下的多属性决策问题的新方法。首先给出一个基于单值中智集的广义距离公式,然后通过语言变量确定了决策专家和属性指标的权重,接着构建了加权的综合决策矩阵,进一步得到各备选方... 详细信息

为了优化投资决策方案优选模型,提出一个基于单值中智环境下的多属性决策问题的新方法。首先给出一个基于单值中智集的广义距离公式,然后通过语言变量确定了决策专家和属性指标的权重,接着构建了加权的综合决策矩阵,进一步得到各备选方案与正负理想方案的距离,利用相对贴近度系数对各备选方案进行综合排序,得到最优决策方案。最后通过一个投资决策的实例,验证了该模型的有效性和实用性。

关键词：中智集单值中智集决策矩阵方案优选建模分析

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基于半导体技术的新型激光谐振腔研究

实验技术与管理 2017年第7期34卷 63-65,94页

作者：林康化小会台州职业技术学院机电工程学院浙江台州318000 河南师范大学数学与信息科学院河南新乡453007

引入微纳光纤、采用绝缘硅(SOI)波导材料,设计了一种多耦合点的谐振腔滤波器。该滤波器工作方式:当光从入射端输入,经过耦合区时一部分光会因为倏逝波的存在发生耦合,耦合进入环形腔的光在满足谐振条件时在环形腔内发生谐振,光在环形腔... 详细信息

引入微纳光纤、采用绝缘硅(SOI)波导材料,设计了一种多耦合点的谐振腔滤波器。该滤波器工作方式:当光从入射端输入,经过耦合区时一部分光会因为倏逝波的存在发生耦合,耦合进入环形腔的光在满足谐振条件时在环形腔内发生谐振,光在环形腔中传播一周后,再次从耦合区从环形腔耦合到微纳光纤直至输出。性能分析表明:自耦合系数的变化不会对光强最大峰值产生影响,可以通过改变传输系数的大小从而实现耦合效率的调整,品质因数能达到10 000以上,衰减能够有效控制;通过SOI材料热膨胀现象实现设计滤波器的性能控制和光开关性能。

关键词：滤波器光开关多耦合点微环谐振腔 SOI波导