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南方文物 2019年第1期 34-43页

作者：杨建华邵会秋吉林大学考古学院

杨建华,1955年出生,吉林大学考古学院教授,国务院第七届考古学科评议组成员,中国社会科学院外国考古研究中心学术委员,吉林大学匡亚明特聘教授。曾经在1994年和2002年两次到英国剑桥大学访学,2008年到美国匹兹堡大学访学。

关键词：杨建华中国社会科学院访谈录执着考古研究英国剑桥大学吉林大学匹兹堡大学

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人物专访——杨剑华

华中建筑 2020年第4期38卷 129-131页

作者：杨剑华中南建筑设计院股份有限公司党委

Q1:请您谈一下在本次抗击疫情中,中南院参与了哪些战疫设计工作?疫情如火,刻不容缓。在这次疫情阻击战中,中南院的干部职工无畏逆行,同时间赛跑,与病魔较量,用热忱与智慧为抗击疫情贡献了巨大的力量。其中,雷神山医院是在全国4000余万... 详细信息

Q1:请您谈一下在本次抗击疫情中,中南院参与了哪些战疫设计工作?疫情如火,刻不容缓。在这次疫情阻击战中,中南院的干部职工无畏逆行,同时间赛跑,与病魔较量,用热忱与智慧为抗击疫情贡献了巨大的力量。其中,雷神山医院是在全国4000余万“云监工”注视下完成的一个举世瞩目的项目。除此之外,我们还承接了大量医院改造设计、方舱医院设计等任务。据统计,截至3月中旬,我们共完成抗“疫”医院设计38个,项目覆盖武汉三镇,兼顾省内外其他地区。其中,医院建造、改造设计14个,方舱医院改造设计21个,方舱医院EPC2个,指挥部改造设计1个,共计助力产生病床位3万余张,为新冠肺炎患者的救助和治疗提供了重要的设施保障。

关键词：武汉三镇肺炎患者人物专访设施保障南院改造设计

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结语——杨剑华

华中建筑 2020年第4期38卷 159-160页

作者：杨剑华中南建筑设计院股份有限公司党委

庚子年初,突如其来的新冠肺炎疫情肆虐全国。处于疫情风暴中心的武汉,早期感染人数激增、医院床位紧缺……迫切需要加速建设新的应急医疗场所。对建筑从业者来说这是一场“大考”,考题是“如何以最快速度挑战不可能?”

关键词：医院床位应急医疗早期感染风暴中心庚子年考题从业者疫情

Joint optimization of inspection, maintenance, and spare ordering policy considering defective products loss

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Journal of Systems Engineering and Electronics 2021年第5期32卷 1167-1179页

作者： HAN Mengying YANG Jianhua ZHAO Xiao School of Economics and Management University of Science and Technology BeijingBeijing 100083China Beijing Enter-prise Low-Carbon Operation Strategy Research Base University of Science and Technology BeijingBeijing 100083China School of Business Hebei University of Economics and BusinessShijiazhuang 050061China

This paper proposes a joint inspection-based maintenance and spare ordering optimization policy that considers the problem of integrated inspection,preventive maintenance,spare ordering,and quality control for a four-state single-unit manufacturing system.When an inspection detects a minor defect,a second phase inspection is initiated and a regular order is placed.Product quality begins to deteriorate when the system undergoes a severe defect.To counter this,an advanced replacement of the minor defective system is carried out at the Jth second phase inspection.If a severe defect is recognized prior to the Jth inspection,or if system failure occurs,preventive or corrective replacement is executed.The timeliness of replacement depends on the availability of spare.We adopt two modes of ordering:a regular order and an emergency order.Meanwhile,a threshold level is introduced to determine whether an emergency order is preferred even when the regular order is already ordered but has not yet arrived.The optimal joint inspection-based maintenance and spare ordering policy is formulated by minimizing the expected cost per unit time.A simulation algorithm is proposed to obtain the optimal two-phase inspection interval,threshold level and advanced replacement interval.Results from several numerical examples demonstrate that,in terms of the expected cost per unit time,our proposed model is superior to some existing models.

关键词： maintenance two-phase inspection spare ordering three-stage failure process delay-time model

Compatibility evaluation between waterborne epoxy resin and SBR latex modified asphalt emulsion

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第1期11卷 160-171页

作者： jianhua yang Zhengqi Zhang Ying Fang Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang'an UniversityXi'an 710064China

Good compatibility between waterborne epoxy resin(WER)modifier and styrene-butadiene rubber(SBR)latex modified asphalt emulsion(SBRE)is an essential premise for good pavement performance of WER and SBR latex compositely modified asphalt emulsion(WSAE).This study aims to explore the compatibility between WER modifier and SBRE.To achieve the goal,several WER modifiers produced by two methods were first selected to modify SBRE,thus the WSAEs were prepared.Next,storage stability and workability of the WSAEs themselves,and high-temperature performance,rheological behavior and temperature sensitivity of their evaporated residues were compared and evaluated via performing a series of experiments,respectively,thus the WER modifier possessing an optimal modification effect was recommended.Results show that the storage stability of WSAEs is sensitive to the amount of WERs.The incorporation of 1%WERs by the mass of SBRE improves the storage stability of SBRE,while WERs that exceed 1%weaken its storage stability.When the WERs reach 3%and 4%,the 5 d storage stability of prepared WSAEs will be beyond the limitation of specification.Incorporating WERs into SBRE negatively affects the workability of SBRE,and the workability of WSAEs is adversely influenced by the WERs content and the storage time.To ensure the construction,the WSAEs with 3%and 4%WERs should not be stored for more than 36 h and 48 h,respectively.The WERs effectively improve the high-temperature performance of SBRE residue,especially the 3%WERs.Besides,the WERs notably enhance the rheological property and thermal stability of SBRE residue.In contrast,the WER modifier produced by chemically modified method has a smaller adverse impact on the storage stability and workability of WSAE,and a larger enhancement on the high-temperature performance,rheological property and thermal stability of SBRE residue,which is thus recommended to modify SBRE.

关键词： Waterborne epoxy resin SBR modified asphalt emulsion Workability Rheological property Temperature sensitivity Compatibility evaluation

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我国足球赛场观众暴力的对策研究

安阳工学院学报 2007年第1期6卷 135-138页

作者：杨建华安阳工学院河南安阳455000

采用文献资料法、问卷调查法、现场观察法等研究方法,通过对广大球迷的深入调查,来了解球迷的基本情况和他们对足球赛场观众暴力的看法。分别从7个方面得出遏制足球赛场观众暴力相应的对策,即法制建设、观众、裁判员、运动员、比赛组织... 详细信息

采用文献资料法、问卷调查法、现场观察法等研究方法,通过对广大球迷的深入调查,来了解球迷的基本情况和他们对足球赛场观众暴力的看法。分别从7个方面得出遏制足球赛场观众暴力相应的对策,即法制建设、观众、裁判员、运动员、比赛组织者、新闻媒体、警察和保安等。希望本文的研究能对我国足球项目以及其它项目的健康发展起到促进作用,创建一个和谐的体育发展环境。

关键词：足球赛场观众暴力对策

Geotechnical engineering blasting:a new modal aliasing cancellation methodology of vibration signal de-noising

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Earthquake Engineering and Engineering Vibration 2022年第2期21卷 313-323页

作者： Yi Wenhua Yan Lei Wang Zhenhuan YANG Jianhua Tao Tiejun Liu Liansheng School of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou 341000China School of Civil Engineering and Architecture Nanchang UniversityNanchang 330031China School of Civil Engineering Guizhou UniversityGuiyang 550025China

In the present study of peak particle velocity(PPV)and frequency,an improved algorithm(principal empirical mode decomposition,PEMD)based on principal component analysis(PCA)and empirical mode decomposition(EMD)is proposed,with the goal of addressing poor filtering de-noising effects caused by the occurrences of modal aliasing phenomena in EMD blasting vibration signal decomposition processes.Test results showed that frequency of intrinsic mode function(IMF)components decomposed by PEMD gradually decreases and that the main frequency is unique,which eliminates the phenomenon of modal aliasing.In the simulation experiment,the signal-to-noise(SNR)and root mean square errors(RMSE)ratio of the signal de-noised by PEMD are the largest when compared to EMD and ensemble empirical mode decomposition(EEMD).The main frequency of the de-noising signal through PEMD is 75 Hz,which is closest to the frequency of the noiseless simulation signal.In geotechnical engineering blasting experiments,compared to EMD and EEMD,the signal de-noised by PEMD has the lowest level of distortion,and the frequency band is distributed in a range of 0-64 Hz,which is closest to the frequency band of the blasting vibration signal.In addition,the proportion of noise energy was the lowest,at 1.8%.

关键词： blasting vibration frequency empirical mode decomposition modal aliasing de-noising

Parallelization strategies for resolved simulations of fluid-structure-particle interactions

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 857-872页

作者： jianhua QIN Fei LIAO Guodan DONG Xiaolei yang The State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China Interdisciplinary Center for Fundamental and Frontier Sciences Nanjing University of Science and TechnologyJiangyin 214443Jiangsu ProvinceChina School of Aeronautics Northwestern Polytechnical UniversityXi'an 710072China School of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China

Fluid-structure-particle interactions in three spatial dimensions happen in many environmental and engineering flows.This paper presents the parallel algorithms for the hybrid diffuse and sharp interface immersed boundary(IB)method developed in our previous work.For the moving structure modeled using the sharp interface IB method,a recursive box method is developed for efficiently classifying the background grid nodes.For the particles modeled using the diffuse interface IB method,a‘master-slave’approach is adopted.For the particle-particle interaction(PPI)and particle-structure interaction(PSI),a fast algorithm for classifying the active and inactive Lagrangian points,which discretize the particle surface,is developed for the‘dry’contact approach.The results show that the proposed recursive box method can reduce the classifying time from 52seconds to 0.3 seconds.Acceptable parallel efficiency is obtained for cases with different particle concentrations.Furthermore,the lubrication model is utilized when a particle approaches a wall,enabling an accurate simulation of the rebounding phenomena in the benchmark particle-wall collision problem.At last,the capability of the proposed computational framework is demonstrated by simulating particle-laden turbulent channel flows with rough walls.

关键词： particle-resolved direct numerical simulation particle-laden flow complex geometry resolved fluid-structure-particle interaction(RFSPI) immersed boundary(IB)method

Effective Algorithms to Detect Stepping-Stone Intrusion by Removing Outliers of Packet RTTs

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Tsinghua Science and Technology 2022年第2期27卷 432-442页

作者： Lixin Wang jianhua yang Michael Workman Pengjun Wan TSYS School of Computer Science Columbus State UniversityColumbusGA 31907USA the Department of Computer Science Illinois Institute of TechnologyChicagoIL 60616USA

An effective method to detect stepping-stone intrusion(SSI)is to estimate the length of a connection chain.This type of detection method is referred to as a network-based detection approach.Existing network-based SSI detection methods are either ineffective in the context of the Internet because of the presence of outliers in the packet round-trip times(RTTs)or inefficient,as many packets must be captured and processed.Because of the high fluctuation caused by the intermediate routers on the Internet,it is unavoidable that the RTTs of the captured packets contain outlier values.In this paper,we first propose an efficient algorithm to eliminate most of the possible RTT outliers of the packets captured in the Internet environment.We then develop an efficient SSI detection algorithm by mining network traffic using an improved version of k-Means clustering.Our proposed detection algorithm for SSI is accurate,effective,and efficient in the context of the Internet.Well-designed network experiments are conducted in the Internet environment to verify the effectiveness,correctness,and efficiency of our proposed algorithms.Our experiments show that the effective rate of our proposed SSI detection algorithm is higher than 85.7%in the context of the Internet.

关键词： network security intrusion detection stepping-stone intrusion round-trip time k-Means clustering connection chain

A comprehensive review of bio-oil, bio-binder and bio-asphalt materials: Their source, composition, preparation and performance

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第2期9卷 151-166页

作者： Zhengqi Zhang Ying Fang jianhua yang Xinjun Li Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang’an UniversityXi'an 710064China

To promote the application of bio-materials and provide a direction for their further researches,this paper comprehensively summarizes the research progress of biomaterials in recent years.The review results show that bio-oil is a mixture obtained from different biomasses through pyrolysis,alcoholysis,acidolysis,high liquefaction,etc.,and those biomasses mainly include wood fiber type,waste oil type and animal manure type.Biobinder refers to the product of bio-oil processed by distillation,extraction oxidation and polymer modification,and it can be served as a modifier,diluent or substitute material of asphalt;the main chemical components of bio-oil include ethers,esters,aldehydes,ketones,phenols,organic acids,alcohols and sugars.Bio-asphalt is obtained by adding biobinder into the petroleum asphalt for modification or blending,and the shear temperature and shear rate of bio-asphalt derived from wood fiber type and waste oil type are usually higher than that of bio-asphalt derived from swine manure.Compared with petroleum asphalt,bio-asphalt binder usually shows lower high-temperature performance as well as higher low-temperature performance and aging resistance.Also,bio-asphalt mixture generally exhibits lower high-temperature stability,higher low-temperature crack resistance and water stability than petroleum asphalt mixture.Future studies should be conducted combining with the source,composition,preparation,properties and oil production rate of bio-oil.First,how to raise the bio-binder content in bio-asphalt as much as possible while ensuring the sufficient performance becomes the focus of future researches.Second,the micro reaction mechanism between bio-binder and petroleum asphalt should be illustrated in depth.Moreover,developing a complete and unifying technical standard and application specification of bio-asphalt technology is necessary for future researches.Furthermore,determining the optimum bio-binder potentially used as the substitute of petroleum asphalt is also an interesting topic.

关键词： Bio-oil Bio-binder Bio-asphalt Road performance Environmental protection