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An Implicit Degree Condition for Relative Length of Long Paths and Cycles in Graphs

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Acta Mathematicae Applicatae Sinica 2016年第2期32卷 365-372页

作者： jun-qing cai Hao LI School of Management Qufu Normal University L.R.I UMR 8623 CNRS and Universit'e Paris-Sud 11 Institute for Interdisciplinary Research Jianghan University

For a graph G, we denote by p（G） and c（G） the number of vertices of a longest path and a longest cycle in G, respectively. For a vertex v in G, id（v） denotes the implicit degree of v. In this paper, we obtain that if G is a 2-connected graph on n vertices such that the implicit degree sum of any three independent vertices is at least n ＋ 1, then either G contains a hamiltonian path, or c（G）〉 p（G） - 1.

关键词： Hamiltonian path dominating cycles implicit degree longest paths longest cycles

An Implicit Degree Ore-condition for Pancyclicity of Graphs

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Acta Mathematica Sinica,English Series 2013年第9期29卷 1773-1780页

作者： Hao LI jun qing cai L.R.I UMR 8623 CNRS and Universit Paris-Sud 11 F-91405 Orsay France Institute for Interdisciplinary Research Jianghan University School of Management Qufu Normal University

In 1989, Zhu, Li and Deng introduced the definition of implicit degree of a vertex v in a graph G, denoted by id（v）. In this paper, we prove that if G is a 2-connected graph of order n such that id（u）＋ id（v） ≥ n for each pair of nonadjacent vertices u and v in G, then G is pancyclic unless G is bipartite, or else n = 4r, r ≥ 2 and G is isomorphic to F4r .

关键词： Implicit degree Hamilton cycle pancyclic graph

Effects of Si on the stability of retained austenite and temper embrittlement of ultrahigh strength steels

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International Journal of Minerals,Metallurgy and Materials 2011年第5期18卷 543-550页

作者： Li-jun Wang qing-wu cai Hui-bin Wu Wei Yu National Engineering Research Center for Advanced Rolling Technology University of Science and Technology Beijing Beijing 100083 China

Effects of silicon （Si） content on the stability of retained austenite and temper embrittlement of ultrahigh strength steels were investigated using X-ray diffraction （XRD）,transmission electron microscopy （TEM）,and other experimental *** results show that Si can suppress temper embrittlement,improve temper resistance,and hinder the decomposition of retained *** austenite appears gradually with the increase of Si content during *** has a significant effect on enhancing carbon （C） partitioning and improving the stability of retained *** and C atoms are mutually exclusive in lath bainite,while they attract each other in austenite.ε-carbides are found in 1.8wt% Si steel tempered at 250℃,and they get coarsened obviously when tempered at 400℃,leading to temper *** ε-carbides but acicular or lath carbides lead to temper embrittlement in 0.4wt% Si steel,which can be inferred as cementites and composite *** embrittlement is closely related to the decomposition of retained austenite and the formation of reversed austenite.

关键词： silicon ultrahigh strength steel retained austenite temper embrittlement reversed austenite

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2013年前郭M_s5.8震群矩张量研究

地球物理学报 2017年第9期60卷 3418-3431页

作者：刘俊清刘财雷建设甘卫军杨清福张晨侠吉林大学地球探测科学与技术学院长春130026 吉林省地震局长春130117 中国地震局地壳应力研究所(地壳动力学重点实验室) 北京100085 中国地震局地质研究所地震动力学国家重点实验室北京100029

2013年吉林前郭M_s5.8震群为爆发性震群,目前余震活动仍然在持续.基于吉林、辽宁、黑龙江、内蒙古四省地震台网记录的前郭震群波形资料,利用波形信噪比、震源类型、台站及速度模型组合的指标选择最佳的反演方案,应用矩张量的三种反演模... 详细信息

2013年吉林前郭M_s5.8震群为爆发性震群,目前余震活动仍然在持续.基于吉林、辽宁、黑龙江、内蒙古四省地震台网记录的前郭震群波形资料,利用波形信噪比、震源类型、台站及速度模型组合的指标选择最佳的反演方案,应用矩张量的三种反演模式,对序列中5个M_s≥5.0地震进行矩张量反演研究,获得了全矩张量、偏矩张量和纯双力偶的矩张量.使用F-test对地震的三种模式的矩张量反演结果进行显著性检验来确定最佳反演模式.结果显示,5个地震的最优矩张量解均为全矩张量模式反演获得的结果,其双力偶分量仅有20%~65%,矩心深度位于地下3~4 km处,地震在Hudson震源类型图上的投影远离双力偶震源类型区域.这些结果表明,震源类型并非典型的构造地震,推断前郭地震可能是与人类活动有关的诱发地震.

关键词：震源机制, 全矩张量解, F-test, 前郭5.8级震群

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基于统计的中文文本主题自动提取研究

四川大学学报（工程科学版） 2004年第3期36卷 97-100页

作者：张清军朱才连中国科学院测量与地球物理研究所湖北武汉430077

文本主题自动提取是一种很有实用价值的技术,它可以有效地浓缩整个web页面,解决无线网络终端由于显示屏太小而无法显示整个网页的难题。总结了目前有关文本主题提取方面的研究成果,设计了一个特征词加权函数,在此函数中考虑了词所跨的... 详细信息

文本主题自动提取是一种很有实用价值的技术,它可以有效地浓缩整个web页面,解决无线网络终端由于显示屏太小而无法显示整个网页的难题。总结了目前有关文本主题提取方面的研究成果,设计了一个特征词加权函数,在此函数中考虑了词所跨的段落数因子,同时采用非线性函数描述词长因子和词所跨的段落数因子的作用,并将加权函数应用于主题自动提取。实现了一个中文主题自动提取系统原型,通过对文本集的测试验证了加权函数的有效性。

关键词：主题自动提取特征词加权函数

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信息抽取技术在LBS中的应用

四川大学学报（工程科学版） 2005年第1期37卷 116-120页

作者：张清军朱才连侯林山中国科学院测量与地球物理研究所湖北武汉430077

由于LBS系统的终端设备处理能力较低,显示屏幕较小,再加上无线数据网络带宽不足,因此无法浏览整个Web网页。采用信息抽取技术可以将用户感兴趣的信息提取出来,再发送给用户终端,有效地解决上述问题,信息抽取技术将是LBS系统中的一项重... 详细信息

由于LBS系统的终端设备处理能力较低,显示屏幕较小,再加上无线数据网络带宽不足,因此无法浏览整个Web网页。采用信息抽取技术可以将用户感兴趣的信息提取出来,再发送给用户终端,有效地解决上述问题,信息抽取技术将是LBS系统中的一项重要应用。提出了一种基于信息抽取的从HTML到WML的页面转换方法,首先标记少量的Web网页形成样本实例集,采用归纳算法生成信息抽取规则;其次应用抽取规则和模式匹配来处理结构和风格类似的Web页面;最后将抽取结果转换为WML页面。开发了原型系统,通过对实际数据源的抽取,验证了此方法的有效性。

关键词： LBS 信息抽取模式匹配页面转换

Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

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Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： Zhao-jun Zhang Wen-Wei Wang Jing-Shui Zhen Bo-Cheng Li De-Cheng cai Yang-Yang Du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

Infiltration by monocytes of the central nervous system and its role in multiple sclerosis: reflections on therapeutic strategies

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Neural Regeneration Research 2025年第3期20卷 779-793页

作者： Guangyong Zhang qing Yao Chubing Long Pengcheng Yi Jiali Song Luojia Wu Wei Wan Xiuqin Rao Yue Lin Gen Wei jun Ying Fuzhou Hua Department of Anesthesiology the Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi ProvinceChina Key Laboratory of Anesthesiology of Jiangxi Province NanchangJiangxi ProvinceChina

Mononuclear macrophage infiltration in the central nervous system is a prominent feature of neuroinflammation. Recent studies on the pathogenesis and progression of multiple sclerosis have highlighted the multiple roles of mononuclear macrophages in the neuroinflammatory process. Monocytes play a significant role in neuroinflammation, and managing neuroinflammation by manipulating peripheral monocytes stands out as an effective strategy for the treatment of multiple sclerosis, leading to improved patient outcomes. This review outlines the steps involved in the entry of myeloid monocytes into the central nervous system that are targets for effective intervention: the activation of bone marrow hematopoiesis, migration of monocytes in the blood, and penetration of the blood–brain barrier by monocytes. Finally, we summarize the different monocyte subpopulations and their effects on the central nervous system based on phenotypic differences. As activated microglia resemble monocyte-derived macrophages, it is important to accurately identify the role of monocyte-derived macrophages in disease. Depending on the roles played by monocyte-derived macrophages at different stages of the disease, several of these processes can be interrupted to limit neuroinflammation and improve patient prognosis. Here, we discuss possible strategies to target monocytes in neurological diseases, focusing on three key aspects of monocyte infiltration into the central nervous system, to provide new ideas for the treatment of neurodegenerative diseases.

关键词： blood–brain barrier macrophages monocytes multiple sclerosis neuroinflammation review therapy

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压延模设计专家系统的图形自动生成

计算机技术与发展 1992年第6期14卷 37-40页

作者：刘泽军蔡青莫荣张森西北工业大学CAD/CAM研究中心陕西西安710072

将专家系统理论应用于模具CAD,建立智能化的模具CAD专家系统已成为模具设计发展的必然趋势。本文介绍如何以压延模设计专家系统(DDES)的设计部分为核心与前提,完成图形生成的技术研究,讨论了动态数据库和图形数据文件的结构以及如何实现... 详细信息

将专家系统理论应用于模具CAD,建立智能化的模具CAD专家系统已成为模具设计发展的必然趋势。本文介绍如何以压延模设计专家系统(DDES)的设计部分为核心与前提,完成图形生成的技术研究,讨论了动态数据库和图形数据文件的结构以及如何实现DDES系统的图形处理和图形显示。

关键词：专家系统动态数据库图形数据文件图形处理图形显示