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Dividend or No Dividend in Delegated Blockchain Governance:A Game Theoretic Analysis

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journal of Systems Science and Systems Engineering 2021年第3期30卷 288-306页

作者： Dapeng Pan j.Leon Zhao Shaokun fan Ziqiong Zhang School of Management Harbin Institute of TechnologyHarbin150001China School of Management and Economics The Chinese University of Hong Kong(Shenzhen)Shenzhen518172China College of Business Oregon State University488 Austin HallCorvallisOR9733USA

Delegated blockchain governance is the frontier of blockchain design issues that is to improve the scalability of blockchain *** proof of stake(DPoS)blockchains such as EOS must select a few super nodes for transaction *** particular,the blockchain community has debated recently on whether dividend should be allowed when electing super nodes,which might be considered as unethical or unfair,leading to an open research topic and a new research gap that has theoretical value for both academia and *** this paper,we build a theoretical framework to study how dividend affects user decisions and welfare in a DPoS *** on game theory,we propose a three-player Hotelling model with two policies to study the behaviors of voters and *** first use a static game analysis to show that the benefits of dividend for voters and for candidates vary with the size of reward and there exists an interval,in which the zero dividend policy would be good for the welfare of both candidates and ***,we use an evolutionary game analysis to examine the process dynamics of super node selection,we find that the campaign strategy of candidates has to do with the size of platform reward given to the candidates by the blockchain *** in the asymmetric case,we find that higher level of platform reward turns to benefit candidates with large number of votes even *** findings are instrumental for designing dividend policies in DPoS blockchains and can stimulate more potential research in blockchain governance.

关键词： Delegated proof of stake consensus algorithm blockchain Hotelling model evolutionary game

Contribution of the winter salinity barrier layer to summer ocean-atmosphere variability in the Bay of Bengal

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Acta Oceanologica Sinica 2024年第9期43卷 35-53页

作者： Shanshan Pang Xidong Wang Gregory r.Foltz Kaigui fan College of Oceanography Hohai UniversityNanjing 210098China Laboratory for regional Oceanography and Numerical Modeling Qingdao Marine Science and Technology CenterQingdao 266061China Atlantic Oceanographic and Meteorological Laboratory Miami 33149USA

It is found that the winter(December-February)barrier layer(BL)in the Bay of Bengal(BoB)acts as a dynamical thermostat,modulating the subsequent summer BoB sea surface temperature(SST)variability and potentially affecting the Indian summer monsoon(ISM)onset and associated rainfall *** the years when the prior winter BL is anomalously thick,anomalous sea surface cooling caused by intensified latent heat flux loss appears in the BoB starting in October and persists into the following year by positive cloud-SST *** january-March,the vertical entrainment of warmer subsurface water induced by the anomalously thick BL acts to damp excessive cooling of the sea surface caused by atmospheric forcing and favors the development of deep atmospheric convection over the *** March-May,the thinner mixed layer linked to the anomalously thick BL allows more shortwave radiation to penetrate below the mixed *** tends to maintain existing cold SST anomalies,advancing the onset of ISM and enhancing june ISM precipitation through an increase in the land-sea tropospheric thermal *** also find that most of the coupled model intercomparison project phase 5(CMIP5)models fail to reproduce the observed relationship between june ISM rainfall and the prior winter BL *** may be attributable to their difficulties in realistically simulating the winter BL in the BoB and ISM *** present results indicate that it is important to realistically capture the winter BL of the BoB in climate models for improving the simulation and prediction of ISM.

关键词： Bay of Bengal barrier layer Indian summer monsoon rainfall CMIP5

Creep-fatigue lives prediction and sensitivity study of 316H at 550 ℃

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Acta Metallurgica Sinica(English Letters) 2011年第2期24卷 132-140页

作者： Zhichao fan David j Smith Xuedong CHEN Mike W Spindler Hefei General Machinery research Institute Hefei 23-0031 China University of Bristol Bristol BS8 1TR UK British Energy Gloucester GL4 3RS UK

In Volume 2/3 of r5 ＂An assessment procedure for the high temperature response of structures＂, the strain based ductility exhaustion method is suggested to calculate the creep damage of stress concentration region, which involves description of creep dwell initial stress, stress drop and creep ductility. Considering lots of uncertainty existed in these assessment, some sensitivity analysis is required in r5 procedure to ensure the conservatism of assessment results. In this paper, laboratory creep-fatigue test data of 316H at 550 ℃ with different loading conditions are selected as a special case to investigate whether the basic r5 approach is conservative, and the different material data combinations of cyclic stress-strain, creep deformation and creep ductility are used to identify those significant parameters affecting the assessment results. The analytical results indicate that the creep deformation model and creep ductility data are more significant to the results comparing with cyclic stress-strain data. If the upper bound of creep deformation law and lower bound of creep ductility data are used to predict their creep-fatigue lives, the degree of conservatism can be as large as a factor of -300, but if the modified creep deformation model and cast specific ductility data are used, very well prediction results can be gained within a factor of ±2.0 although there is slight non-conservatism.

关键词： Creep Fatigue Damage Life prediction Sensitivity study

robust adaptive control of hypersonic vehicle considering inlet unstart

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journal of Systems Engineering and Electronics 2022年第1期33卷 188-196页

作者： WANG fan fan Pengfei fan Yonghua XU Bin YAN jie College of Astronautics Northwestern Polytechnical UniversityXi’an 710072China College of Automation Northwestern Polytechnical UniversityXi’an 710072China

In this paper,a model reference adaptive control(MrAC)augmentation method of a linear controller is proposed for air-breathing hypersonic vehicle(AHV)during inlet *** the development of hypersonic flight technology,hypersonic vehicles have been gradually moving to the stage of *** the maneuvers,changes of attitude,Mach number and the back pressure can cause the inlet unstart phenomenon of *** unstart causes significant changes in the aerodynamics of AHV,which may lead to deterioration of the tracking performance or instability of the control ***,we firstly establish the model of hypersonic vehicle considering inlet unstart,in which the changes of aerodynamics caused by inlet unstart is described as nonlinear ***,an MrAC augmentation method of a linear controller is proposed and the radial basis function(rBF)neural network is used to schedule the adaptive parameters of ***,the Lyapunov function is constructed to prove the stability of the proposed ***,numerical simulations show that compared with the linear control method,the proposed method can stabilize the attitude of the hypersonic vehicle more quickly after the inlet unstart,which provides favorable conditions for inlet restart,thus verifying the effectiveness of the augmentation method proposed in the paper.

关键词： air-breathing hypersonic vehicle(AHV) inlet unstart model reference adaptive control augmentation(MrAC) radial basis function(rBF)neural network

The value of postoperative hepatic regional chemotherapy in prevention of recurrence after radical resection of primary liver cancer

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World journal of Gastroenterology 2000年第1期6卷 131-133页

作者： Wu ZQ fan j Qiu Sj Zhou j Tang ZY Liver Cancer Institute Shanghai Medical UnviersityShanghai 200032China

INTrODUCTIONIn China,primary liver cancer (PLC) ranks secondin cancer mortality since the *** the field ofPLC treatment,surgical resection remains the best,which includes large PLC resection,small PLCresection,re-rese... 详细信息

关键词： Subject headings liver neoplasms/drug therapy neoplasm recurrence/prevention and control regional chemotherapy

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从工程实例看文物原真性修复

山西建筑 2025年第1期51卷 23-26,45页

作者：范欣智广州市文物考古研究院广东广州510000

文化遗产原真性是一个庞杂的话题,涉及到文化遗产的材质、形态、环境等方面完整、真实性的讨论。如何将一套高度涵盖各种情况、各方需求的理论运用到具体的文物对象上是一个值得思考的课题。文章将以两例文物为切入点,针对工程中面临的... 详细信息

文化遗产原真性是一个庞杂的话题,涉及到文化遗产的材质、形态、环境等方面完整、真实性的讨论。如何将一套高度涵盖各种情况、各方需求的理论运用到具体的文物对象上是一个值得思考的课题。文章将以两例文物为切入点,针对工程中面临的问题及病害处理措施,研究其对文物原真性的影响,并以实例比较的方式提出设想,最后结合工程成果等情况提出一些见解。

关键词：文物古建筑祠堂原真性

FUrTHEr DESCrIPTION OF Strobilomyia melaniola(fan)(Diptera:Anthomyiidae)

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journal of Northeast Forestry University 1990年第1期1卷 93-98页

作者： fan Zidc Chen ZhiziShanghai Institute of Entomology, Acadcmia Sinica P. r. Chinafang SanyangNortheast Forestry University, Harbin 150040 P. r. China 1. Shanghai Institute of Entomology Acadcmia Sinica P. R. China 2. Northeast Forestry University 150040 Harbin P. R. China

In a recent paper,***(1988,Systematic Entomology 13:271--314)revised18 world species of anthomyiid cone and seed pests and described a new genus,Strobilomyia *** considered *** of Noutheast China to be a synonym of *** of North *** they are the same species is not *** compared the morphological characters of maleand female *** adults with the close relatives,*** and *** conclude thatthey are not the same species and that *** is an independent species.

关键词： Seed insects Cone insects Anthomyiid taxonomy Larix pests Strobilomyia morphology

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统一数字证书签名服务系统设计与实现

科学技术创新 2025年第1期 96-99页

作者：樊婧竹上海浦东发展银行股份有限公司上海

随着我行零售业务数字化战略的深化开展,网银、手机APP等互联网渠道覆盖越来越广、已经成为客户交易的主要渠道。在业务快速发展的同时,我行在处理客户有关我行电子渠道纠纷时的证据证明力不足的问题也有所凸显。基于此,建立了统一数字... 详细信息

随着我行零售业务数字化战略的深化开展,网银、手机APP等互联网渠道覆盖越来越广、已经成为客户交易的主要渠道。在业务快速发展的同时,我行在处理客户有关我行电子渠道纠纷时的证据证明力不足的问题也有所凸显。基于此,建立了统一数字证书签名服务提供电子签名、数字证书、第三方存证等服务,在为客户提供更优质金融服务的同时,增加客户行为记录,固化相关交易证据,通过技术手段强化证据证明效力,有效保障各方权益。

关键词：电子签名数字证书客户行为

新课标背景下的初中英语大单元主题教学技巧探析

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英语教师 2025年第1期 166-169页

作者：范云丽江苏省苏州市常熟市海虞初级中学江苏苏州215519

基于《义务教育英语课程标准(2022年版)》提出的“发挥核心素养的统领作用”的课程理念,提出大单元主题教学有助于落实培养学生核心素养的目标。结合具体案例,从主题与教学内容的设计、教学前任务的设计、教学中的指导和教学后的活动组... 详细信息

基于《义务教育英语课程标准(2022年版)》提出的“发挥核心素养的统领作用”的课程理念,提出大单元主题教学有助于落实培养学生核心素养的目标。结合具体案例,从主题与教学内容的设计、教学前任务的设计、教学中的指导和教学后的活动组织等角度系统探索初中英语大单元主题教学技巧,在提升大单元主题教学有效性的同时,培养学生的核心素养,促进学生全面发展。

关键词：初中英语大单元主题教学核心素养