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Frontiers of Economics in China-Selected Publications from Chinese Universities 2020年第4期15卷 575-625页

作者： Yun Wang mingyang yan School of Economics Renmin University of ChinaBeijing 100872China The Wang yanan Institute for Studies in Economics Xiamen UniversityXiamen 361005China

Individuals’risk attitudes play an important role in economic decision making and policy evaluation,particularly in the midst of unprecedented uncertainty caused by the COVID-19 *** adopt a multiple-price-list elicitation method with real money incentives to measure precisely individuals’risk attitudes at different stake levels and the extent to which they are affected by personal and social shocks following the COVID-19 outbreak in *** find that subjects who had previously experienced negative personal shocks are more risk-averse at medium and large stakes but more risk loving at very small *** our sample,COVID-19 has no significant impact on risk attitudes,as it is more likely to be regarded as a social *** result indicates that the impact of COVID-19 on individual risk attitudes is not as influential as expected,unless the individual’s personal life is affected directly.

关键词： risk attitude risk instability behavioral economics negative shock COVID-19 pandemic

3D printing of flexible piezoelectric composite with integrated sensing and actuation applications

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Advanced Powder Materials

Advanced Powder Materials 2024年第5期3卷 91-100页

作者： Jiang Li yan Zhang mingyang yan Chao Zhong Lianzhong Zhao Di Zhai Hang Luo Xi Yuan Dou Zhang State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

3D printing of flexible piezoelectric composites(3D-FPCs)is increasingly attracting the attention due to its unique advantage for customized smart ***,current research mainly focuses on the 0-3 piezoelectric composites,in which the piezoelectric ceramics are embedded in polymer matrix in the form of *** poor connectivity between particles much reduces the conduction of strain and charge in the composites,seriously limiting its application in *** this work,a continuous lead zirconate titanate(PZT)double-layer ceramic scaffold was prepared by 3D printing and assembled with epoxy resin and interdigital electrodes together to manufacture a multifunctional *** 3D-FPCs exhibit a free strain of 1830 ppm in actuating and are able to actuate a stainless-steel cantilever beam to produce a tip displacement of 5.71 ***,the devices exhibit a sensitivity of 26.81V/g in sensing ***,3D-FPCs are demonstrated as actuators for mobile small robots and wearable sensors for sensing joint activities.

关键词： 3D printing Direct ink writing Flexible piezoelectric composites Actuation Sensing

Radiation shielding for the first optics enclosure at the High Energy Photon Source beamlines

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Radiation Detection Technology and Methods 2021年第2期5卷 168-173页

作者： Pingcheng Liu Qiongyao Liu Zhongjian Ma Huijie Zhang mingyang yan Qingbin Wang Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China University of Chinese Academy of Sciences Beijing 100049China

Purpose The High Energy Photon Source(HEPS)is currently under construction in China and will be the brightest synchrotron radiation facility in the *** solve the gas bremsstrahlung and synchrotron radiation hazard at HEPS beamlines,a comprehensive radiation study is *** The Monte Carlo method is used to analyze the radiation field in the first optics enclosure at HEPS ***,the radiation sources including gas bremsstrahlung and synchrotron radiation are ***,the distribution of the radiation field in the hutch is *** parameters and a typical beamline geometry are used in the ***,the shielding recommendations are *** and Conclusion In this paper,the considerations and bulk shielding design of the first optics enclosure at HEPS beamlines are *** design satisfies the requirements of the radiation safety principles.

关键词： Radiation shielding Gas bremsstrahlung Synchrotron radiation HEPS Beamlines

Cosmogenic^(10)Be dating of the oldest moraine in the Hengduan Mountains

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Science China Earth Sciences 2023年第10期66卷 2211-2223页

作者： Zhigang ZHANG Jiahong ZHENG Haitao CUI Zhijun ZHAO Xinggong KONG Chaogang ZHENG Hong ZHANG Fei GUO Zhiyang CHANG Xue YUAN mingyang yan Jie ZHANG Jian WANG School of Geography Nanjing Normal UniversityNanjing210023China Key Laboratory of Virtual Geographic Environment(Nanjing Normal University) Ministry of EducationNanjing210023China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing210023China Tourism and Social Administration College NanJing XiaoZhuang UniversityNangjing211171China

The Hengduan Mountains is in the transitional zone between the Qinghai-Tibet Plateau(QTP)and the YunnanGuizhou Plateau in China,and a key area for elucidating the Quaternary environmental changes in *** paleo-Daocheng ice cap was located on the Shaluli Hilly Plateau in the northeastern Hengduan Mountains,the oldest moraines in the Hengduan Mountains region were found in the ice cap *** glacial landforms provide key evidence to study the timing when this area entered the cryosphere with the uplift of the ***,it is difficult to collect suitable glacial boulders from these moraines for traditional terrestrial in-situ cosmogenic nuclide(TCN)exposure dating because of long-term severe moraine ***,we collected clast samples from the moraine surface and depth profile to constrain the age of the oldest moraine in Kuzhaori(moraine E)using TCN^(10)Be dating *** minimum^(10)Be ages of five clast samples from the moraine surface range from 187.4±1.5 to 576.8±4.3 ka,implying that the moraine has been seriously degraded since *** on the TCN^(10)Be concentrations of the samples from a depth profile and simulations,the exposure-erosion-inheritance history of the profile was *** fitting to the profile^(10)Be concentrations using the chi-square test,the simulations yielded a reliable age of 626.0±52.5 ka for the ***,the oldest moraine(moraine E)in Kuzhaori was most likely formed at about 0.63Ma ago,corresponding to the marine isotope stage(MIS)*** glaciation represents the maximum Quaternary glaciation after the QTP was elevated into the cryosphere by the Kunlun-Yellow River Tectonic Movement.

关键词： Hengduan Mountains Paleo-Daocheng ice cap Terrestrial in-situ cosmogenic nuclide^(10)Be Depth profile Exposure dating

Energetic particles’fluxes and dose in the Radiation Gene Box measured by space radiation detector onboard SJ-10 satellite

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Radiation Detection Technology and Methods 2018年第2期2卷 93-100页

作者： Xingzhu Cui Yaqing Liu Wenxi Peng Jinzhou Wang Min Gao Dongya Guo Xiaohua Liang Ruirui Fan Huanyu Wang Yunlong Zhang Zhongjian Ma mingyang yan Hong Xiao Yuanda Jiang Haiying Hang Institute of High Energy Physics CASBeijingChina College of Physics Jilin UniversityChangchunChina Changzhou Institute of Technology ChangzhouChina National Space Science Center CASBeijingChina Institute of Biophysics CASBeijingChina

Background To evaluate the hazard of space radiation posing to the tissues,it is important to obtain exact fluxes of different radiation *** Radiation Gene Box(RGB)onboard SJ-10 spacecraft was an instrument designed to investigate the effects of space environment on the mESCs and *** derive the dose received by the tissues inside the RGB,the Space Radiation Detector(SRD)was installed inside *** The SRD was designed to derive the fluxes of electron,proton,hellion and gamma rays around *** the type of the particles,the energies,the fluxes and the conversion coefficients are known,the dose received by the tissues could be *** The SRDwas designed as a △E-E solid-state *** measuring the energy deposited in the three subdetectors,the particles’type and their energies could be *** data of SRDwere divided into 15 bins by the types of particles and their energy *** The gamma ray flux was higher than any other particle flux inside the RGB,and the electron was the most intense charge particle,while the helium ion was the most harmful radiation to the cells inside the *** The dose rate inside the Radiation Gene Box was much higher than in the ground,but the integral dose of 12 days inside the RGB was about 2.13 *** seemed unlikely to have obvious biological effects on the tissues of mice and drosophila.

关键词： Particles’flux Dose Radiation detector Geomagnetic field

论中医“气”语词指称的概念性与时序性事态的对象化

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北京中医药大学学报 2018年第9期41卷 717-725页

作者：严名扬王云亭北京中医药大学研究生院北京100029 中日友好医院骨科

作为中医理论和传统哲理的初始语词,气是中医药实践活动中的核心术语。探讨气认知的概念性内涵,以期为中医药理论现代性话语体系的建立提供一个视野和角度。本文基于辩证唯物论,采用现象学还原和分析哲学的语词指称等方法,分别对气的认... 详细信息

作为中医理论和传统哲理的初始语词,气是中医药实践活动中的核心术语。探讨气认知的概念性内涵,以期为中医药理论现代性话语体系的建立提供一个视野和角度。本文基于辩证唯物论,采用现象学还原和分析哲学的语词指称等方法,分别对气的认知内容和体验过程进行意向性分析,对气语词的意义、形式与指称对象进行事态性解析。通过系统性分析,阐述气在传统思维"象—事—是"对应"语词—意义—指称对象"的认知模式;气作为时序性事态的把握主要表现为时序性现象流和空间性体验流的组织形式,并以此形成客体对象,如基本事态和复杂事态。复杂事态时序性把握的形式是气作为本质认识而存在的实体,并以此形成语词的指称对象。由此,以时序性事态为内涵的气概念性指称使与气相关的术语在同一视角下呈现层次性的外延体系,并为中医理论研究提供了一个新途径。

关键词：对象化概念化气事态时空序列体验流指称

SD模型的系统极小反馈基模集人树组合删除生成法——以德邦规模养种系统发展为例

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系统工程理论与实践 2016年第2期36卷 427-441页

作者：贾伟强孙晶洁贾仁安严明洋张南生南昌航空大学经管学院南昌330063 南昌大学系统工程研究所南昌330031 德邦牧业有限公司九江330402

反馈基模是社会经济复杂系统分析的有效工具,在穷举可能经嵌运算生成极小基模的入树组合原则下,给出了三个入树组合删除法则,利用法则可删除大量不能生成极小基模的入树组合,从而实现简单有效计算一个确定复杂系统极小基模集的目的.根... 详细信息

反馈基模是社会经济复杂系统分析的有效工具,在穷举可能经嵌运算生成极小基模的入树组合原则下,给出了三个入树组合删除法则,利用法则可删除大量不能生成极小基模的入树组合,从而实现简单有效计算一个确定复杂系统极小基模集的目的.根据二阶反馈环中流位变量、流率变量的关联特征,给出二阶极小基模生成步骤;根据入树组合删除法则,给出三到n阶极小基模生成步骤.由此,得到规范化的系统极小反馈基模集生成的步骤.以德邦牧业规模养种生态能源反馈系统为例,建立了含八棵入树的流率基本入树模型,利用此方法计算出系统八个极小基模构成的系统极小反馈基模集.此八个极小基模可有效刻画养殖废弃物污染制约系统发展、厌氧发酵产出物二次污染制约系统发展、场户合作低碳循环农业模式促进系统发展三个不同阶段的系统主导结构,并基于极小基模分析生成促进系统发展的三条管理对策.建立了德邦牧业规模养种生态能源反馈系统模型仿真方程,仿真分析三条管理对策的实施效应,实现了定性至定量综合集成分析,此实证分析效果揭示极小基模集入树组合删除生成法为系统进行反馈环分析提供了一种新的方法.

关键词：极小反馈基模动态复杂性生态能源工程系统动力学

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基于熵产理论的航空柱塞泵涡轮增压系统优化

航空学报 2024年第4期45卷 280-292页

作者：陈远玲陈家文潘越洋闫明洋广西大学机械工程学院南宁530004

在航空柱塞泵的进油端集成涡轮增压系统,有利于提高航空液压系统的集成度,并解决柱塞泵在高转速下因吸油不足而产生的空化、脱靴等难题。针对涡轮增压系统中叶片和压水室流道的优化设计问题,基于熵产理论对增压系统中的能量损失及其空... 详细信息

在航空柱塞泵的进油端集成涡轮增压系统,有利于提高航空液压系统的集成度,并解决柱塞泵在高转速下因吸油不足而产生的空化、脱靴等难题。针对涡轮增压系统中叶片和压水室流道的优化设计问题,基于熵产理论对增压系统中的能量损失及其空间分布进行了研究,构建了涡轮自增压轴向柱塞泵的流体域模型,探究压水室形式、断面形状、进口宽度、断面面积变化规律以及涡轮叶片形式与熵产率的关系,以熵产最小为目标优化涡轮增压系统的结构:涡轮采用扭曲叶片,压水室采用螺旋形、断面形状采用圆弧形、压水室进口宽度采用8 mm、断面面积变化规律为U型时,增压系统的总熵产下降约0.032 W/K,较优化前降低了13%,增压值上升约0.22 bar,较优化前增加7%。最后采用试制的样机搭建试验系统,测试了直叶片形式和扭曲叶片形式的涡轮增压值,试验结果与仿真结果基本一致。

关键词：航空柱塞泵涡轮增压熵产理论能量损失结构优化

O3/H2O2体系降解水中青霉素G的效能及其降解机理

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环境工程学报 2020年第9期14卷 2485-2493页

作者：颜鸣扬颜智勇蔡意祥彭博尚李斐湖南农业大学资源环境学院长沙410128

为探讨O3/H2O2体系降解水中青霉素G(PCN)的效能及其降解机理,分别考察了在降解过程中pH、O3投加量和H2O2投加量对PCN和COD去除效果的影响,通过实验数据得出了PCN降解动力学方程;并采用傅里叶红外光谱和液相色谱-质谱联用分析探讨了PCN... 详细信息

为探讨O3/H2O2体系降解水中青霉素G(PCN)的效能及其降解机理,分别考察了在降解过程中pH、O3投加量和H2O2投加量对PCN和COD去除效果的影响,通过实验数据得出了PCN降解动力学方程;并采用傅里叶红外光谱和液相色谱-质谱联用分析探讨了PCN在O3氧化过程中的中间产物变化及其降解规律。结果表明:在初始ρ(PCN)为25 mg·L^−1、pH=10、O3投加量为1.48 g·L^−1、H2O2投加量为7.84 mmol·L^−1、温度为20℃的条件下,反应10 min后PCN可全部被降解,反应3 h后COD的去除率达到71.9%;O3的反应级数为0.6973,在降解过程中,O3初始浓度对反应速率的影响最大;反应活化能为Ea=27.59 kJ·mol^−1,该反应活化能较低,说明此反应容易发生;经氧化降解后,PCN的抑菌结构被破坏,并且产物中可能含有羧酸类和胺类化合物。以上研究结果对解决水体中PCN污染问题具有参考价值。

关键词： O3/H2O2 青霉素G 降解机理反应动力学中间产物

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中医辨证的先验意向性浅析

世界中医药 2009年第3期4卷 121-124页

作者：严名扬湖南中医药大学第一临床医学院

目的:探讨辨证思维的行为本质。方法:以中医辨证意识流为研究对象,从整体上认识辨证过程中的普遍性规律;利用现象学还原、综合、客观化行为等方法,对辨证整个意识流进行意向性结构分析,以把握其意向行为的特性与意义。结果:辨证是一个... 详细信息

目的:探讨辨证思维的行为本质。方法:以中医辨证意识流为研究对象,从整体上认识辨证过程中的普遍性规律;利用现象学还原、综合、客观化行为等方法,对辨证整个意识流进行意向性结构分析,以把握其意向行为的特性与意义。结果:辨证是一个本质规定性的"关联体-复合体-统一体"(三体)意向行为;辨证行为本身所具有的意向性贯穿于作为症的体验-证之综合的整个过程中,辨证的意向性分析必然地关系到中医的内容理论与形式理论。结论:从主观侧的先验分析投射至客观侧的认识是中医理论现代研究的另一条可持续发展的途径。

关键词：辨证意向性先验分析