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LDE融合光谱回归分类的光照变化人脸识别

计算机工程与应用 2014年第11期 154-158页

作者：周柏清任勇军湖州职业技术学院信息工程分院南京信息工程大学计算机与软件学院

针对光照变化人脸识别问题中传统的光谱回归算法不能很好地进行特征提取而严重影响识别性能的问题,提出了局部判别嵌入优化光谱回归分类的人脸识别算法。计算出训练样本的特征向量;借助于数据的近邻和分类关系,利用局部判别嵌入算法构... 详细信息

针对光照变化人脸识别问题中传统的光谱回归算法不能很好地进行特征提取而严重影响识别性能的问题,提出了局部判别嵌入优化光谱回归分类的人脸识别算法。计算出训练样本的特征向量;借助于数据的近邻和分类关系,利用局部判别嵌入算法构建分类问题所需的嵌入,同时学习每种分类的子流形所需的嵌入;利用光谱回归分类算法计算投影矩阵,并利用最近邻分类器完成人脸的识别。在两大人脸数据库扩展YaleB及CMU PIE上的实验验证了该算法的有效性,实验结果表明,相比其他光谱回归算法,该算法取得了更高的识别率、更好的工作特性,并且降低了计算复杂度。

关键词：光照变化人脸识别局部判别嵌入光谱回归分类最近邻分类器

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电去离子脱盐机理的研究

净水技术 2006年第2期25卷 11-13,34页

作者：张赢夏中明周柏青武汉大学水质工程系湖北武汉430072

通过描述原水流速对膜堆电流的影响以及膜堆电流对浓水pH的影响,对电去离子脱盐机理加以解释。实验表明,原水流速的变化对膜堆电流的影响很小,在低流速下能够得到更好的出水水质;浓水pH由于水电离随着膜堆电流的增加而下降,最后趋于平... 详细信息

通过描述原水流速对膜堆电流的影响以及膜堆电流对浓水pH的影响,对电去离子脱盐机理加以解释。实验表明,原水流速的变化对膜堆电流的影响很小,在低流速下能够得到更好的出水水质;浓水pH由于水电离随着膜堆电流的增加而下降,最后趋于平衡。同时对淡水室中的树脂层态进行了分析,并且采用“空穴”传导理论对EDI 脱盐过程中的离子迁移行为做出解释。

关键词：电去离子水电离树脂层态 “空穴”传导

一种快速评价反渗透阻垢剂性能的方法——浊度法

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清洗世界 2015年第4期31卷 17-21页

作者：刘娟李茂东杨麟周柏青广州特种承压设备检测研究院广州510100 武汉大学湖北武汉430072

水中结垢性离子生成结晶,以及阻垢剂与其他药剂相互作用生成不溶物后,产生的微小颗粒必然引起水体浊度随之改变。根据浊度的变化,可以判断微小颗粒生成与否,进而评价阻垢剂的性能。试验表明,浊度法可以用于评价反渗透阻垢剂的阻垢性能... 详细信息

水中结垢性离子生成结晶,以及阻垢剂与其他药剂相互作用生成不溶物后,产生的微小颗粒必然引起水体浊度随之改变。根据浊度的变化,可以判断微小颗粒生成与否,进而评价阻垢剂的性能。试验表明,浊度法可以用于评价反渗透阻垢剂的阻垢性能和药剂兼容性能,特别适用于多种阻垢剂的快速筛选。该方法具有一定的重现性,阻垢性能和兼容性能评价的相对标准偏差(RSD)分别为5.5%、3.5%和4.6%。

关键词：浊度法反渗透阻垢剂性能评价

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有害离子对反渗透阻垢剂的影响

化学工业与工程技术 2005年第2期26卷 10-12页

作者：徐厚道周柏青李芹李志军武汉大学动力与机械学院水质工程系湖北武汉430072

采用浊度法评价了反渗透系统中常见的几种杂质离子对阻垢剂阻垢能力的影响。研究表明,对于阻碳酸钙垢来说,不同的阻垢剂对Fe3+,Al3+,Cu2+,ClO- 等离子有不同的抵抗能力。杂质离子对阻垢剂E的影响普遍较小。

关键词：反渗透阻垢剂杂质离子浊度法

基于ΔK_(Ca)评价反渗透阻垢剂阻碳酸钙垢性能试验

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中国特种设备安全 2017年第12期33卷 58-62,65页

作者：陈琪华刘娟魏加强李茂东周柏青广州特种承压设备检测研究院广州510663 武汉大学武汉430072

采用阶梯排水法为运行模式,探讨了判断反渗透阻垢剂阻碳酸钙垢性能相对优劣的关键指标试验研究。结果表明:采用阶梯排水法可以用于反渗透阻垢剂筛选;pH、ΔK_(Ca)(浓缩倍数增量)和饱和指数(LSI)等都可作为筛选反渗透阻垢剂的关键指标,以... 详细信息

采用阶梯排水法为运行模式,探讨了判断反渗透阻垢剂阻碳酸钙垢性能相对优劣的关键指标试验研究。结果表明:采用阶梯排水法可以用于反渗透阻垢剂筛选;pH、ΔK_(Ca)(浓缩倍数增量)和饱和指数(LSI)等都可作为筛选反渗透阻垢剂的关键指标,以ΔK_(Ca)最灵敏。

关键词：阶梯排水反渗透阻垢剂评价方法关键指标

Multiperiod Equitable and Efficient Allocation Strategy of Emergency Resources Under Uncertainty

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International Journal of Disaster Risk Science 2022年第5期13卷 778-792页

作者： Yanyan Wang baiqing Sun School of Humanities Social Sciences and LawHarbin Institute of TechnologyHarbin 150001China School of Management Harbin Institute of TechnologyHarbin 150001China

Equitable and efficient allocation of emergency resources is critical to ensure the success of relief *** challenge comes largely from two aspects:the resources available for allocation are usually limited in quantity,especially in the early period of emergency response;and a large amount of uncertain information in the relief process affects the decision making of resource allocation.A multiperiod allocation model of emergency resources that takes into account both efficiency and equity based on uncertain disaster information is *** number and triangular fuzzy number are introduced to describe the different sources of uncertainty(for example,demand,transportation time,and maximum transport amount),and the loss caused by unmet demand is used to quantify ***,the deterministic transformation method of uncertain parameters is designed and the linear weighted sum method is applied to solve the proposed ***,a computational case based on the 2017 Jiuzhaigou earthquake in Sichuan Province,China was conducted to validate the proposed *** results show that the proposed model is feasible in the multiperiod allocation of emergency resources among multidisaster sites,and the findings can help emergency managers to allocate emergency resources more scientifically,equitably,and effectively under uncertainty.

关键词： China Emergency resource allocation Equity and efciency Uncertainty Unmet demand

Effects of cooling rate on the fracture properties of TA15 ELI alloy plates

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Rare Metals 2007年第1期26卷 33-38页

作者： LI Shikai XIONG baiqing HUI Songxiao State Key Laboratory for Fabrication and Processing of Nonferrous Metals General Research Institute for Nonferrous Metals Beijing 100088 China

The effects of cooling rate on the mechanical properties and the fatigue crack growth behavior of TA15 ELI alloy plates with different microstructures were investigated at room temperature. The results indicate that the cooling rate （water quench, air cooling, and furnace cooling） has a pronounced influence on the mechanical properties and on the fatigue crack growth, especially for air cooling and furnace cooling. Optical microstructure observation and scanning electron microscopy of tensile fracture surfaces were performed to gain an insight into the mechanism of properties. The dependence of mechanical properties and fatigue crack growth behavior on the cooling rate can be attributed to the oc lamellae width and the colony size, which induce the change in slip length. The microstmcture produced by air cooling shows the best damage tolerance behavior when compared with water quench and furnace cooling.

关键词： heat treatment fatigue crack growth microstmcture TA15 ELI

Regulating reserve with large penetration of renewable energy using midterm dynamic simulation

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Journal of Modern Power Systems and Clean Energy 2013年第1期1卷 73-80页

作者： Chaoyang JING baiqing LI eMIT LLCPasadenaCA 91107USA China Electric Power Research Institute BeijingChina

A novel renewable energy intermittency model and a new midterm dynamic simulation tool in power systems are developed for examining dynamic behavior along the load curve for different combinations of the system operation reserves and renewable portfolio standard(RPS)*** system’s import limits are *** is concluded that ignoring intermittency and governor effects is an inadequate method to assess intermittency *** intermittency midterm dynamic impact must be *** the studied system,the instability is expected to be about 25%RPS with current ***,the most vulnerable peak hour to instability is the afternoon peak hour when solar begins to drop *** article stimulates further dynamic intermittency studies on the issues caused by renewable *** studies on the issues caused by renewable intermittency have not been revealed because of inadequate/incomprehensive study methodologies so that effective,mitigative solutions can be developed to guarantee the reliability of power grid when incorporating higher RPS if high operation reserves are impractical.

关键词： Renewable energy intermittency Midterm dynamic simulation Power systems Dynamic stability Renewable portfolio standard(RPS)

Preliminary Results on Hydrological and Hydrochemical Features of Kartamak Glacier Area in Mt. Muztag Ata

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Journal of Mountain Science 2007年第1期4卷 77-85页

作者： ZHAO Huabiao YAO Tandong XU baiqing Key Laboratory of Cryosphere and Environment CAREERI CAS Lanzhou Gansu 730000 China Institute of Tibetan Plateau Research CAS Bering 100085 China Key Laboratory of Oryosphere and Environment CAREERI CAS Lanzhou Gansu 730000 China

The variations of the meltwater runoff draining from Kartamak Glacier in Mt. Muztag Ata in China were studied by using the measured hydrological data from 1 June to 25 August 2003. The meltwater runoff is mainly affected by ambient temperature and precipitation. Meltwater and precipitation samples were collected from 10 to 23 August 2003. Their pH, EC (electric conductivity) and the major ions (Na^+, K^+, Ca^(2+), Mg^(2+), Cl^-, NO_3^-, SO_~4^(2-)) were determined. pH values showed a positive correlation with EC values for all samples. Meltwater samples were slightly alkaline. Sulfate and calcium were the dominant anion and cation in the measured ions, respectively. All the ion concentrations had inverse relationships with runoff or water level. In order to discuss the origins of dissolved chemical substances in the glacial meltwater, a principal component analysis was carried out. The results showed that water-rock interaction determined the ion components of the meltwater.

关键词： Muztag Ata Kartamak Glacier Meltwater runoff Hydrochemical characteristics