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基于合作博弈论的电梯修建成本分摊博弈

曲阜师范大学学报（自然科学版） 2024年第2期50卷 9-20,F0002页

作者：吴靖伟谭志斌曹志刚中央财经大学经济学院 100081 北京交通大学经济管理学院北京市100044

老旧小区加装电梯是目前城镇化建设中的一个重要议题.问题的关键之一是如何在需求和收益高度异质的业主间分摊电梯安装成本.该文以合作博弈论为基础构建了电梯博弈模型,证明了电梯博弈为凸博弈,并给出了两类基于最小支撑树博弈的推广Bir... 详细信息

老旧小区加装电梯是目前城镇化建设中的一个重要议题.问题的关键之一是如何在需求和收益高度异质的业主间分摊电梯安装成本.该文以合作博弈论为基础构建了电梯博弈模型,证明了电梯博弈为凸博弈,并给出了两类基于最小支撑树博弈的推广Bird配置,其中第二类推广Bird配置与现行的成本分摊机制很相似,且满足成本单调性、人口单调性以及感知公平性.

关键词：电梯修建合作博弈凸博弈最小支撑树博弈电梯博弈

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露天矿边坡滚石运动轨迹的统计研究——以内蒙古某矿山为例

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勘察科学技术 2024年第4期 11-15页

作者：王琦谭志斌王晓明隗新河北地质大学城市地质与工程学院中勘冶金勘察设计研究院有限责任公司河北地质大学河北省地下人工环境智慧开发与管控技术创新中心自然资源部京津冀城市群地下空间智能探测与装备重点实验室

有效、准确地估算露天矿边坡滚石运动轨迹，对滚石防护及保障矿山安全生产具有重要意义。该文以内蒙古某露天矿采场边坡为例，采用RocFall软件对滚石运动轨迹开展模拟研究，获得了采场坡脚台阶坡面、顶部及整个采场边坡的滚石运动轨迹... 详细信息

有效、准确地估算露天矿边坡滚石运动轨迹，对滚石防护及保障矿山安全生产具有重要意义。该文以内蒙古某露天矿采场边坡为例，采用RocFall软件对滚石运动轨迹开展模拟研究，获得了采场坡脚台阶坡面、顶部及整个采场边坡的滚石运动轨迹及位置分布的统计规律，并为防护滚石提出了建议。研究结果表明：坡脚台阶坡面、顶部滚石的最终位置距坡脚的最大距离不超过18 m;整个边坡坡面滚石的运动范围可划分为四个区间，滚石最终位置距坡脚的最大距离不超过9 m;现有安全平台可有效防护滚石。本研究为该矿山的滚石防护提供了理论依据，也可为同类工程提供参考借鉴。

关键词：露天矿滚石运动轨迹 RocFall软件安全平台

基于准正交原理的多信源少观测源的盲语音信号分离

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计算机工程与应用 2005年第8期41卷 55-59页

作者：檀志斌中国科学技术大学电子工程与信息科学系信号统计处理实验室合肥230027

信号源个数多于观测信号个数情况下的盲源分离问题是盲信号分离中的一个难题,也是一个很实际的问题。论文在***提出的一种基于准正交原理的盲分离算法基础上,指出当混合矩阵的基矢量不满足准正交性时,可以对观测信号预白化,使混合矩阵... 详细信息

信号源个数多于观测信号个数情况下的盲源分离问题是盲信号分离中的一个难题,也是一个很实际的问题。论文在***提出的一种基于准正交原理的盲分离算法基础上,指出当混合矩阵的基矢量不满足准正交性时,可以对观测信号预白化,使混合矩阵的基矢量的准正交性得以很大提高。然后将此方法用于多信源少观测源情况下的混合语音信号分离。实验分为两个过程:(1)估计混合矩阵;(2)用最大后验概率的估计方法分离源语音信号。实验结果证明了该算法能够有效用于高维情况下多信源少观测源的盲语音信号分离。

关键词：盲源分离准正交性语音信号分离

Gravitational waves and primordial black hole productions from gluodynamics by holography

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 31-42页

作者： Song He Li Li zhibin Li Shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin UniversityChangchun 130012China Max Planck Institute for Gravitational Physics(Albert Einstein Institute) Golm 14476Germany CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Peng Huanwu Collaborative Center for Research and Education Beihang UniversityBeijing 100191China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China

Understanding the nature of quantum chromodynamics(QCD)matter is important but challenging due to the presence of nonperturbative dynamics under extreme *** construct a holographic model describing the gluon sector of QCD at finite temperatures in the non-perturbative *** equation of state as a function of temperature is in good accordance with the lattice QCD ***,the Polyakov loop and the gluon condensation,which are proper order parameters to capture the deconfinement phase transition,also agree quantitatively well with the lattice QCD *** obtain a strong first-order confinement/deconfinement phase transition at Tc=276.5 Me V that is consistent with the lattice QCD *** on our model for a pure gluon hidden sector,we compute the stochastic gravitational waves and primordial black hole(PBH)productions from this confinement/deconfinement phase transition in the early *** resulting stochastic gravitational-wave backgrounds are found to be within detectability in the International Pulsar Timing Array and Square Kilometre Array in the near future when the associated productions of PBHs saturate the current observational bounds on the PBH abundances from the LIGO-Virgo-Collaboration O3 data.

关键词： AdS/QCD confinement/deconfinement phase transition gravitational wave primordial black hole

Organic Synthesis through Radical Innovation:Frustrated Radical Pairs

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Chinese Journal of Chemistry 2024年第10期42卷 1157-1160页

作者： zhibin Hu Zengrui Cheng Ning Jiao State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityBeijing 100191China Shanghai Key Laboratory of Green Chemistry and Chemical Processes East China Normal UniversityShanghai 200062China

Frustrated Lewis Pairs(FLPs)represent a unique class of interactions in Lewis acid-base chemistry,driven by spatial hindrance or incongruent orbital energy levels that hinder the formation of effective coordination *** have received significant attention for their application in activating small molecules and facilitating organic synthesis *** developments have led to the emergence of Frustrated Radical Pairs(FRPs)as an extension of the radical *** are formed from FLPs through Single Electron Transfer(SET)and exhibit the ability to activate a variety of chemical *** research on FLPs is well-established,investigations into FRPs in organic reactions remain *** review highlights the current state of FRPs in organic synthesis,delves into mechanistic insights,explores their potential,and underscores the challenges in this emerging field.

关键词： Radicals Frustrated Lewis Pairs Frustrated Radical Pairs Methodology and reactions Reaction mechanisms

Numerical Investigation on Heat Transfer Characteristics of Microencapsulated Phase Change Material Slurry in a Rectangular Minichannel

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Journal of Thermal Science 2024年第2期33卷 564-577页

作者： WANG zhibin LI Zilong JIA Lisi DING Bin CHEN Ying School of Materials and Energy Guangdong University of TechnologyGuangzhou510006China Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter Guangzhou510006China College of New Energy China University of Petroleum(East China)Qingdao266580China

Microencapsulation phase change material slurry(MEPCMS) becomes a potential working fluid for cooling high energy density miniaturized components,thanks to the latent heat absorption of particles in the heat transfer *** this work,the Discrete Phase Model(DPM) based on the Euler-Lagrangian method is used to numerically investigate the convective heat transfer characteristics of MEPCMS flowing through a rectangular minichannel with constant heat *** results show that particles of MEPCMS are mainly subjected to drag force during the *** so,they can migrate from the high-temperature region to the low-temperature region driven by the thermophoretic force,affecting the particle distribution and phase change ***,the Nux of the MEPCMS fluctuates due to particle phase change with varying specific heat ***,the value increases first,then decreases,and eventually increases again until it approaches the fully developed value of the pure base fluid as the particles gradually ***,the heat transfer performance of the MEPCMS is influenced by the combination of fluid inlet temperature fluid inlet velocity(v),and mass concentration(c_(m)) of MEPCM *** result shows that the maximum reduction of the maximum bottom wall temperature difference(ΔT_(w)) is 23.98% at T_(in)=293.15 K,v=0.15 m·s^(-1),c_(m)=10%.

关键词： Microencapsulated Phase Change Material Slurry(MPCMS) Discrete Phase Model(DPM) particle-fluid interaction force minichannel heat sink thermophoresis

Finite Element Method for Transient Electric Field by Using Indirect Laplace Transform with High Accuracy

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 401-411页

作者： Teng Wen Xiang Cui Xuebao Li Sijia Liu zhibin Zhao State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China China Electric Power Planning&Engineering Institute Beijing 100120China

This paper focuses on the finite element method in the complex frequency domain(CFD-FEM)for the transient electric ***,the initial value and boundary value problem of the transient electric field under the electroquasistatic field in the complex frequency domain is *** addition,the finite element equation and the constrained electric field equation on the boundary are ***,the indirect algorithm of the numerical inverse Laplace transform is *** on it,the calculation procedures of the CFD-FEM are illustrated in ***,the step response,zero-state response under the positive periodic square waveform(PPSW)voltage,and the zero-input response by the CFD-FEM with direct algorithm and indirect algorithm are ***,the reason for the numerical oscillations of the zero-state response under the PPSW voltage is analyzed,and the method to reduce oscillations is *** results show that the numerical accuracy of the indirect algorithm of the CFD-FEM is more than an order of magnitude higher than that of the direct algorithm when calculating the step response of the transient electric *** proposed method can significantly reduce the numerical oscillations of the zero-state response under the PPSW *** proposed method is helpful for the calculation of the transient electric field,especially in the case of frequency-dependent parameters.

关键词： Electroquasistatic field transient electric field finite element method complex frequency domain numerical Laplace transform

ELABELA-derived peptide ELA13 attenuates kidney fibrosis by inhibiting the Smad and ERK signaling pathways

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第4期25卷 341-353页

作者： zhibin YAN Ying SHI Runling YANG Jijun XUE Caiyun FU Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine College of Life Sciences and MedicineZhejiang Sci-Tech UniversityHangzhou310018China State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000China Key Laboratory of Preclinical Study for New Drugs of Gansu Province School of Basic Medical Sciences&Research Unit of Peptide ScienceChinese Academy of Medical Sciences2019RU066Lanzhou UniversityLanzhou 730000China

Kidney fibrosis is an inevitable result of various chronic kidney diseases(CKDs)and significantly contributes to end-stage renal ***,there is no specific treatment available for renal ***13(amino acid sequence:RRCMPLHSRVPFP)is a conserved region of ELABELA in all vertebrates;however,its biological activity has been very little *** the present study,we evaluated the therapeutic effect of ELA13 on transforming growth factor-β1(TGF-β1)-treated NRK-52E cells and unilateral ureteral occlusion(UUO)*** results demonstrated that ELA13 could improve renal function by reducing creatinine and urea nitrogen content in serum,and reduce the expression of fibrosis biomarkers confirmed by Masson staining,immunohistochemistry,real-time polymerase chain reaction(RT-PCR),and western *** biomarkers were increased after UUO and decreased by administration of ***,we found that the levels of essential molecules in the mothers against decapentaplegic(Smad)and extracellular signal-regulated kinase(ERK)pathways were reduced by ELA13 treatment in vivo and in *** conclusion,ELA13 protected against kidney fibrosis through inhibiting the Smad and ERK signaling pathways and could thus be a promising candidate for anti-renal fibrosis treatment.

关键词： ELA13 Kidney fibrosis Inflammation Smad Extracllular signal-regulated kinase(ERK)

Effect of surfactant frequently used in soil flushing on oxygen mass transfer in micro-nano-bubble aeration system

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Chinese Journal of Chemical Engineering 2024年第3期67卷 174-181页

作者： Mei Bai zhibin Liu Zhu Liu Chenfei He Zhanhuang Fan Miaoxin Yuan Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety Southeast UniversityNanjing 211189China CECEP DADI(Hangzhou)Environmental Remediation Co. Ltd.Hangzhou 310020China

In-site soil flushing and aeration are the typical synergetic remediation technology for contaminated *** surfactant present in flushing solutions is bound to affect the aeration *** purpose of this study is to evaluate the effect of surfactant frequently used in soil flushing on the oxygen mass transfer in micro-nano-bubble(MNB)aeration ***,bio-surfactants and chemical surfactants were used to investigate their effects on Sauter mean diameter of bubble(dBS),gas holdup(ε),volumetric mass-transfer coefficient(kLa)and liquid-side mass-transfer coefficient(kL)in the MNB aeration ***,based upon the experimental results,the Sardeing's and Frossling's models were modified to describe the effect of surfactant on kL in the MNB *** results showed that,for the twenty aqueous surfactant solutions,with the increase in surfactant concentration,the value of dBS,kLa and kL decreased,while the value ofεand gas-liquid interfacial area(a)*** phenomena were mainly attributed to the synergistic effects of immobile bubble surface and the suppression of coalescence in the surfactant *** addition,with the presence of electric charge,MNBs in anionic surfactant solutions were smaller and higher in number than in non-ionic surfactant ***,the accumulation of surfactant on the gas-liquid interface was more conspicuous for small MNB,so the reduction of kL in anionic surfactant solutions was larger than that in non-ionic surfactant ***,the modified Frossling's model predicted the effect of surfactant on kL in MNB aeration system with reasonable accuracy.

关键词： Soil flushing Micro-nano-bubble aeration Bio-surfactant Mass transfer coefficient