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论强军目标视域下的战斗文化培塑

解放军艺术学院学报 2015年第1期 100-104页

作者：吴峰敏海军航空工程学院人文社科系烟台264001

文化是民族的血脉,是人民的精神家园,也是军队发展的强大动力。我军在党领导下,于长期的历史实践中,形成了特色鲜明的先进军事文化。当前发展先进军事文化一定要紧紧围绕强军目标,通过文化的发展为强军实践提供可靠的政治保证、强大的... 详细信息

文化是民族的血脉,是人民的精神家园,也是军队发展的强大动力。我军在党领导下,于长期的历史实践中,形成了特色鲜明的先进军事文化。当前发展先进军事文化一定要紧紧围绕强军目标,通过文化的发展为强军实践提供可靠的政治保证、强大的精神动力和有力的人才支持。由于强军、兴军的核心在于能打胜仗,那么,这种环境所催生的先进军事文化必然呈现出鲜明的战斗性,探讨强军目标视域下的战斗文化培塑问题的意义也就由此凸显。

关键词：强军目标战斗文化先进军事文化培塑

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AVP100阀门定位器非线性特性实验研究

现代制造技术与装备 2023年第4期59卷 13-17页

作者：吴凤民银川科技学院信息工程学院银川750021

以AVP100阀门定位器为研究对象,保留其机械结构,由上位机代替智能控制模块。结合AETS型调节阀搭建实验平台,自主设计模糊控制算法,对系统正(阀门开度全关到全开)、反(阀门开度全开到全关)两个行程,以间隔10%的开度为变化条件,分别采集... 详细信息

以AVP100阀门定位器为研究对象,保留其机械结构,由上位机代替智能控制模块。结合AETS型调节阀搭建实验平台,自主设计模糊控制算法,对系统正(阀门开度全关到全开)、反(阀门开度全开到全关)两个行程,以间隔10%的开度为变化条件,分别采集系统输出特性曲线并进行对比分析。

关键词： AVP100阀门定位器非线性特性阀门开度

重庆市主城区医院空间格局及其对应急效率的影响研究

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规划师 2015年第S1期31卷 269-273页

作者：吴凤敏袁超郑稚棚北京师范大学重庆市地理信息中心中国林业科学研究院

医院作为医疗救急的重要机构,其空间布局直接影响应急医疗救援的速度、能力和效率,对迅速、有序、有效地开展应急与救援行动、降低事故损失具有重要的现实意义。研究基于GIS缓冲区分析的方法,通过构建就医难易等级指数模型计算出重庆市... 详细信息

医院作为医疗救急的重要机构,其空间布局直接影响应急医疗救援的速度、能力和效率,对迅速、有序、有效地开展应急与救援行动、降低事故损失具有重要的现实意义。研究基于GIS缓冲区分析的方法,通过构建就医难易等级指数模型计算出重庆市主城区医院的最佳救治范围及就医难易等级指数,由此总结出重庆市主城区医院的空间布局特征及其合理性,以及医院空间格局对应急效率的影响。

关键词：医院应急效率 GIS缓冲区分析重庆市主城区

基于三维轮胎-集料离散元的避险车道失控车辆停车过程分析

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中国科技论文 2020年第2期15卷 214-220页

作者：覃频频吴达吴锋民侯晓磊广西制造系统与先进制造技术重点实验室(广西大学) 南宁530004 广西大学机械工程学院南宁530004

为了提高避险车道失控车辆停车距离的估算精度,并分析车轮沉陷变形作用下砾石粒径、坡度、车辆速度、载重等对停车距离的影响,开展了基于三维轮胎-集料离散元的避险车道失控车辆停车过程分析。首先构建集料-车轮三维离散元模型;其次通... 详细信息

为了提高避险车道失控车辆停车距离的估算精度,并分析车轮沉陷变形作用下砾石粒径、坡度、车辆速度、载重等对停车距离的影响,开展了基于三维轮胎-集料离散元的避险车道失控车辆停车过程分析。首先构建集料-车轮三维离散元模型;其次通过真实试验数据标定模型中的集料、车轮离散元的微观参数;最后进行不同砾石粒径、不同车轮载重、不同驶入速度、不同坡度的数值模拟试验。结果发现:集料粒径、坡度、失控车辆初始速度、载重对停车过程有显著影响;推荐了集料的配比方法、制动床铺设厚度、避险车道铺设长度等信息。

关键词：避险车道停车距离离散单元法数值模拟

利用AMSR-E数据反演华北平原冬小麦单散射反照率

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遥感学报 2015年第1期19卷 162-171页

作者：柴琳娜吴凤敏张立新施建成北京师范大学遥感科学国家重点实验室遥感与地理信息系统研究中心地理学与遥感科学学院北京100875 重庆市地理信息中心重庆401121 中国科学院遥感与数字地球研究所遥感科学国家重点实验室北京100101

首先,基于冬小麦不同生育期的地面实测参数,构建了组成冬小麦冠层的、包括不同尺寸和含水量的介电散射体模拟数据库,并在此基础上建立冬小麦单散射反照率和光学厚度分别在C(6.925 GHz)和X(10.65 GHz)波段之间的依赖关系。然后,根据一阶... 详细信息

首先,基于冬小麦不同生育期的地面实测参数,构建了组成冬小麦冠层的、包括不同尺寸和含水量的介电散射体模拟数据库,并在此基础上建立冬小麦单散射反照率和光学厚度分别在C(6.925 GHz)和X(10.65 GHz)波段之间的依赖关系。然后,根据一阶参数化模型推导得到的微波植被指数MVIs(Microwave Vegetation Indices)的物理表达式,结合AMSR-E被动微波亮温数据,反演了华北平原地区冬小麦不同生育期的单散射反照率。与MODIS日归一化差异植被指数NDVI的对比结果显示:冬小麦单散射反照率与NDVI随时间的变化趋势大致相同,但在冬小麦的抽穗期到乳熟期,NDVI呈现饱和趋势,而单散射反照率对小麦的生长变化仍旧比较敏感,在指示冬小麦生长方面具有一定优势。

关键词：单散射反照率冬小麦 AMSR-E 参数化模型微波植被指数被动微波

Ballistic performances of the hourglass lattice sandwich structures under high-velocity fragments

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Defence Technology（防务技术） 2024年第1期31卷 312-325页

作者： He-xiang wu Jia Qu Lin-zhi wu Key Laboratory of Advanced Ship Materials and Mechanics College of Aerospace and Civil EngineeringHarbin Engineering UniversityHarbin150001China School of Civil Engineering Northeast Forestry UniversityHarbin150040China

In this paper,the numerical simulation method is used to study the ballistic performances of hourglass lattice sandwich structures with the same mass under the vertical incidence of *** is paid to elucidating the influences of rod cross-section dimensions,structure height,structure layer,and rod inclination angle on the deformation mode,ballistic performances,and ability to change the ballistic direction of *** results show that the ballistic performances of hourglass lattice sandwich structures are mainly affected by their structural *** this respect,structural parameters optimization of the hourglass lattice sandwich structures enable one to effectively improve their ballistic limit velocity and,consequently,ballistic performances.

关键词： Hourglass lattice sandwich structures Ballistic performances high-velocity Finite element analysis

Resilience-incorporated seismic risk assessment of precast concrete frames with“dry”connections

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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 403-425页

作者： wu Chenhao Tang Yuchuan Cao Xuyang wu Gang Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education Nanjing 211102China Department of Civil and Environmental Engineering University of CaliforniaLos AngelesCA 90095USA School of Civil Engineering Southeast UniversityNanjing 211102China College of Civil and Transportation Engineering Hohai UniversityNanjing 210024China

A resilience-incorporated risk assessment framework is proposed and demonstrated in this study to manifest the advantageous seismic resilience of precast concrete frame(PCF)structures with“dry”connections in terms of their low damage and rapid *** framework integrates various uncertainties in the seismic hazard,fragility,capacity,demand,loss functions,and post-earthquake *** this study,the PCF structures are distinguished from ordinary reinforced concrete frame(RCF)structures by characterizing multiple limit states for the PCF based on its unique damage ***,probabilistic story-wise pushover analyses are performed to yield story-wise capacities for the predefined limit *** the seismic resilience analysis,a step-wise recovery model is proposed to idealize the functionality recovery process,with separate considerations of the repair and non-repair *** recovery model leverages the economic loss and downtime to delineate the stochastic post-earthquake recovery curves for the resilience loss *** such,contingencies in the probabilistic post-earthquake repairs are incorporated and the empirical judgments on the recovery parameters are largely *** proposed framework is demonstrated through a comparative study between two“dry”connected PCFs and one RCF designed as alternative structural systems for a prototype *** results from the risk quantification indicate that the PCFs show reduced loss hazards and lower expected losses relative to the ***,the PCF equipped with energy dissipation devices at the“dry”connections largely reduces the expected economic loss,downtime,and resilience loss by 29%,56%,and 60%,respectively,compared to the RCF.

关键词： precast concrete frame non-emulative precast system seismic resilience seismic risk functional recovery

New findings on the influence of El Nino events on tropical cyclone formation

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Science China Earth Sciences 2024年第3期67卷 892-893页

作者： Liguang wu Department of Atmospheric and Oceanic Sciences Institute of Atmospheric SciencesFudan UniversityShanghai 200438China

Tropical cyclones typically form over warm tropical and subtropical ocean surfaces, as their formation and intensification rely primarily on the energy provided by the ocean. Pioneering research by Gray (1968) revealed that the formation of tropical cyclones requires the sea surface temperature (SST) to be no less than 26.5℃. Consequently, SST is commonly recognized as a crucial parameter among the environmental factors influencing tropical cyclone formation(Gray, 1979;Emanuel and Nolan, 2004).

关键词： tropical cyclone ocean

Two-dimensional semiconductor heterostructures for photocatalytic CO_(2)conversion

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Science China Chemistry 2024年第8期67卷 2434-2447页

作者： Yang wu Mingyu wu Yongfu Sun Yi Xie Hefei National Research Center for Physical Sciences at Microscale University of Science and Technology of ChinaHefei 230026China

The CO_(2)reduction into carbon-contained fuel via solar energy offers the powerful tools to realize the zero-emission carbon *** to the intriguing features of the two-dimensional(2D)heterostructures,it is susceptible to modulate the electronic structure as well as the surface geometry for optimizing the photocatalytic CO_(2)*** this perspective,we surveyed the fundamental insights of 2D semiconductor heterostructures,involving the fabrication strategies and classification of the 2D semiconductor ***,we have detailly discussed the overview of 2D semiconductor heterostructure for optimizing CO_(2)photocatalytic influenced factors,including the solar energy utilization,photogenerated carriers separation,and redox reaction ***,we showed the significant advantages of 2D heterostructures in elevating CO_(2)photoreduction performance,focusing on activity,selectivity and *** analyzing the limitations and developments,we ended by putting forward insights into the further researches about the CO_(2)photocatalysts and reactor design,even industrial applications.

关键词： two-dimensional semiconductor heterostructures photocatalysis CO_(2)conversion