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Incentive-based demand response model for maximizing benefits of electricity retailers

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Journal of Modern Power Systems and Clean Energy 2019年第6期7卷 1644-1650页

作者： Yanxin CHAI yue xiang Junyong LIU Chenghong GU Wentao ZHANG Weiting XU College of Electrical Engineering and Information Technology Sichuan UniversityChengdu 610065China Department of Electronic and Electrical Engineering University of BathBath BA27AYUK State Grid Sichuan Economic Research Institute Chengdu 610000China

The change of customer behaviors and the fluctuation of spot prices can affect the benefits of electricity *** address this issue,an incentive-based demand response(DR)model involving the utility and elasticity of customers is proposed for maximizing the benefits of *** benefits will increase by triggering an incentive price to influence customer behaviors to change their demand *** optimal reduction of customers is obtained by their own profit optimization model with a certain incentive ***,the sensitivity of incentive price on retailers’benefits is analyzed and the optimal incentive price is obtained according to the DR *** case study verifies the effectiveness of the proposed model.

关键词： Demand response Customer utility Price elasticity of demand Retailer profit Incentive price

pH-dependent corrosion initiation behavior induced by inclusions of low alloy steel in simulated marine environments

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Journal of Iron and Steel Research International 2023年第10期30卷 2067-2079页

作者： Heng Ma Zhong-xue Wang yue Liu yue-xiang Wang Teng-fei Wang Qing-pu Zhang Zhong-yu Cui Yinshan Section Steel Corporation of Laiwu Steel Group Ltd. Jinan 271104ShandongChina School of Materials Science and Engineering Ocean University of ChinaQingdao 266100ShandongChina

The initial pitting corrosion behavior triggered by inclusions in S420 low alloy steel in acidic artificial seawater(ASW)and weak-alkaline ASW was *** geometric data of the corrosion pits formed in the ASW with different pH were *** pH of the ASW has an obvious influence on the pit *** pits in acidic ASW exhibit a funnel shape,while those in weak-alkaline ASW present a cone shape with a larger pit *** reason for the difference in the morphology and size of the corrosion pits induced by inclusion is that it is easier to trigger micro-galvanic corrosion in different structures and different areas of the pits in the acidic environment.

关键词： Low alloy steel Inclusion Pitting corrosion Micro-galvanic corrosion

融合无人机光谱与纹理信息的玉米氮素营养估测

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中国农业科学 2024年第16期57卷 3154-3170页

作者：运彬媛谢铁娜李虹岳翔吕明玥王佳琦贾彪宁夏大学农学院宁夏大学科学技术研究院宁夏回族自治区农业环境保护监测站

【目的】作物氮素营养状况是表征玉米冠层绿色程度和健康状态的关键指标，为比较玉米氮素营养估测模型中单一光谱指数模型与融合纹理信息模型精度的差异，探究基于无人机多光谱与纹理信息融合的玉米氮素营养估测模型的精准性与可靠性。... 详细信息

【目的】作物氮素营养状况是表征玉米冠层绿色程度和健康状态的关键指标，为比较玉米氮素营养估测模型中单一光谱指数模型与融合纹理信息模型精度的差异，探究基于无人机多光谱与纹理信息融合的玉米氮素营养估测模型的精准性与可靠性。【方法】采用Matrice 300 RTK多旋翼飞行器搭载MS600 Pro多光谱传感器，获取2年间6个氮素水平下玉米抽雄-吐丝期的多光谱影像数据，提取植被指数和纹理特征信息，综合分析植被指数、单纹理特征、组合纹理指数及植被指数和纹理指数融合的相关性，优选信息量最大的植被指数、归一化差值纹理指数（NDTI）及其组合信息，利用多元逐步回归（MSR）、随机森林（RF）、支持向量机（SVM）和灰狼优化的卷积神经网络（GWO-CNN）对比估测玉米叶片氮含量（LNC）、植株氮含量（PNC）、叶片氮积累（LNA）和植株氮积累（PNA）4个氮素营养参数。【结果】（1）不同氮素处理下玉米原始光谱反射率之间存在差异，红波段R（660 nm）、蓝波段B（450 nm）和近红外波段NIR（840 nm）波段差异较为显著。（2）基于无人机多光谱影像提取的植被指数（EVI、GARI、REOSAVI、SIPI和MCARI）、单纹理特征(var450、var660、mean840、dis720和hom840)和组合纹理指数NDTI均可用于VT-R1阶段玉米LNC、PNC、LNA及PNA估测，其中基于植被指数的GWO-CNN模型对LNC、PNC、LNA和PNA的估测效果优于单纹理特征和纹理指数模型，R2分别为0.831、0.761、0.826和0.770。（3）融合植被指数和纹理指数的GWO-CNN模型对LNC、PNC、LNA和PNA估测精度明显高于植被指数和纹理指数，R2分别为0.921、0.901、0.917和0.892，较单一光谱信息最优估测模型精度R2分别提高了9.77%、15.54%、9.92%和13.68%。【结论】融合多光谱的植被指数和纹理指数能够有效提高玉米氮素营养估测精度，较好地评估玉米氮素分布情况，为田块尺度下基于无人机平台的玉米氮肥精准管理提供新思路。

关键词：玉米氮素多光谱植被指数纹理信息

A N/Co co-doped three-dimensional porous carbon as cathode host for advanced lithium-selenium batteries

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稀有金属:英文版 2023年第8期42卷 2670-2678页

作者： Fei Gao xiang-An yue xiang-Yu Xu Peng Xu Fan Zhang Hao-Sen Fan Zhou-Lu Wang Yu-Tong Wu xiang Liu Yi Zhang School of Energy Sciences and Engineering Nanjing Tech UniversityNanjing 211816China School of Materials Science and Engineering East China Jiaotong UniversityNanchang 330013China College of Materials Science and Metallurgy Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Selenium(Se)is a promising cathode material for lithium batteries due to its high volumetric energy density(2528 Wh·L^(-1)).However,its practical application is restricted by rapid capacity fading resulting from the shuttle effect and slow reaction ***,a N/Co co-doped three-dimensional porous carbon(Co-NC)is prepared and used as Se host for lithium-selenium batteries(LSeBs).Co-NC displays a high specific surface area of1201 m^(2)·g^(-1)which benefits from N and Co *** N and Co not only enhance the electrical conductivity of porous carbon but also possess an adsorption effect on ***,Se/Co-NC electrode exhibits excellent cycling performance(a stable specific capacity of 480 mAh·g^(-1)after 200 cycles at 1.0C with a much lowcapacity decay of 0.028%per cycle)and outstanding rate performance(a high specific capacity of 414 mAh·g^(-1)at5.0C).This work inspires highly stable Se cathode design for LSeBs.

关键词： Lithium-selenium batteries(LSeBs) Se host Co-NC Electrical conductivity Cycling stability

DKI衍生参数预测新生儿缺氧缺血性脑病预后

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临床放射学杂志 2024年第10期43卷 1787-1793页

作者：刘祥龙岳翔赵鑫陆林张博浩张小安王雪源郑州大学第三附属医院医学影像科河南科技大学临床医学院 450000

目的探究扩散峰度成像(DKI)在新生儿缺氧缺血性脑病(HIE)预后评估中的价值。方法以行MRI检查且被临床诊断为HIE的新生儿66例为研究对象,进行颅脑常规MRI和DKI的扫描,并测量感兴趣区(ROI)的DKI衍生参数,将其与14天时新生儿行为神经行为测... 详细信息

目的探究扩散峰度成像(DKI)在新生儿缺氧缺血性脑病(HIE)预后评估中的价值。方法以行MRI检查且被临床诊断为HIE的新生儿66例为研究对象,进行颅脑常规MRI和DKI的扫描,并测量感兴趣区(ROI)的DKI衍生参数,将其与14天时新生儿行为神经行为测定(NBNA)评分及6个月、12个月时Gesell婴幼儿发展量表(Gesell)评分进行Spearman秩相关分析。Mann-Whitney U秩和检验用来比较预后好组与预后差组间的DKI衍生参数差异,并利用受试者工作特征曲线(ROC curve)来分析DKI衍生参数的预测预后效能。结果部分DKI衍生参数与NBNA、6个月Gesell评分及12个月Gesell评分具有一定相关性。尾状核、胼胝体压部的平均扩散浓度(MK)值,尾状核的轴向扩散峰度(Ka)值,苍白球、壳核的径向扩散峰度(Kr)值及半卵圆中心层面中央白质的各向异性分数(FA)值在预后好组与预后差组间表现出明显的差异,且预后好组的值大于预后差组,其中所有参数的联合诊断效能最高(曲线下面积为0.815),胼胝体压部的Kr值可鉴别预后好组和预后差组间的差异(曲线下面积为0.738),胼胝体压部的MK值和Kr值可鉴别预后好组和预后差组间的差异(曲线下面积分别为0.810和0.838)。结论DKI衍生参数可以作为临床对新生儿HIE的预后评估的潜在指标,可为制定更优治疗方案提供相关依据。

关键词：新生儿缺氧缺血性脑病扩散峰度成像白质 NBNA评分 Gesell评分

Large cutaneous epithelioid angiomatous nodules in a patient with nephrotic syndrome: A case report

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World Journal of Clinical Cases 2020年第3期8卷 600-605页

作者： De-Jin Cheng xiang-yue Zheng Shui-Fu Tang First School of Clinical Medicine Guangzhou University of Chinese MedicineGuangzhou 510405Guangdong ProvinceChina Division of Ophthalmology First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510405Guangdong ProvinceChina Division of Nephrology First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510405Guangdong ProvinceChina

BACKGROUND Cutaneous epithelioid angiomatous nodules(CEAN) are rare, benign, vascular lesions characterized by benign proliferation of endothelial cells with prominent epithelioid features, which can be easily confused with benign and malignant vascular tumors. However, the etiology of CEAN remains unclear, and no association with infection, trauma, or immunosuppression has been *** case study indicated that CEAN is closely related to the patient’s impaired immune status and may be induced by *** SUMMARY A 19-year-old boy with nephrotic syndrome(NS) developed large CEAN on the left foot during treatment for NS. He had repeated relapses of edema in the past 6 years and different types of immunosuppressants were administered including methylprednisolone, mycophenolate mofetil, tacrolimus and cyclosporine;the dosages of these drugs were frequently adjusted. The patient had been receiving cyclosporine and methylprednisolone for 7 mo before he developed *** was discontinued due to its side effects on skin. After cessation of cyclosporine and 16 mo follow-up, the nodules gradually disappeared without any other treatment for the *** Impaired immune status is proposed to be a risk factor for CEAN, which may be induced by cyclosporine.

关键词： Cutaneous epithelioid angiomatous nodule Nephrotic syndrome Cyclosporine Immunosuppression Case report Risk factors

Integrated traffic-power simulation framework for electric vehicle charging stations based on cellular automaton

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Journal of Modern Power Systems and Clean Energy 2018年第4期6卷 816-820页

作者： yue xiang Zipeng LIU Jichun LIU Youbo LIU Chenghong GU College of Electrical Engineering and Information Technology Sichuan University State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical Engineering Xi'an Jiaotong University Department of Electronic and Electrical Engineering University of Bath

This paper presents a novel integrated framework for simulating the charging load of an electric vehicle charging station. The framework is built based on the cellular automaton model, including five modules: vehicle generation, charging station, lane change, speed update and boundary clear. The proposed framework can effectively stimulate the system dynamics of the traffic system and charging power process in a charging station. Case studies have verified its feasibility and effectiveness.

关键词： Charging station Charging load Traffic flow Simulation Cellular automaton

Effect of nickel segregation on CuΣ9 grain boundary undergone shear deformations

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Chinese Physics B 2018年第6期27卷 231-243页

作者： xiang-yue Liu Hong Zhang Xin-Lu Cheng Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China Key Laboratory of High Energy Density Physics and Technology of Ministry of Education Sichuan University Chengdu 610065 China College of Physical Science and Technology Sichuan University Chengdu 610065 China

Impurity segregation at grain boundary（GB） can significantly affect the mechanical behaviors of polycrystalline metal. The effect of nickel impurity segregated at Cu GB on the deformation mechanism relating to loading direction is comprehensively studied by atomic simulation. The atomic structures and shear responses of Cu Σ9（114） 110 and Σ9（221） 110 symmetrical tilt grain boundary with different quantities of nickel segregation are analyzed. The results show that multiple accommodative evolutions involving GB gliding, GB shear-coupling migration, and dislocation gliding can be at play, where for the 2ˉ21ˉ shear of Σ9（114） 110 the segregated GBs tend to maintain their initial configurations and a segregated GB with a higher impurity concentration is more inclined to be a dislocation emission source while maintaining the high mechanical strength undergone plastic deformation for the 11ˉ4ˉ shear of Σ9（221） 110. It is found that the nickel segregated GB exerts a cohesion enhancement effect on Cu under deformation： strong nickel segregation increases the work of separation of GB, which is proved by the first-principles calculations.

关键词： grain boundary segregation nickel impurity first-principles calculations cohesion effect

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多重参考系动区域比率变化对流场模拟的影响

计算机仿真 2024年第8期41卷 309-314页

作者：岳相丞石艳廖映华赵练四川轻化工大学机械工程学院四川宜宾644000 宜宾市智能终端数字化制造工程技术研究中心四川宜宾644000

采用CFD软件在稳态计算复杂模型时,发现使用多重参考系分析固液两相流常常会出现计算结果不收敛的问题。在不改变数值模型边界条件的情况下,调整多重参考系动区域比率的取值,将搅拌固液两相的PY平直叶圆盘涡轮搅拌釜按不同比率划分了20... 详细信息

采用CFD软件在稳态计算复杂模型时,发现使用多重参考系分析固液两相流常常会出现计算结果不收敛的问题。在不改变数值模型边界条件的情况下,调整多重参考系动区域比率的取值,将搅拌固液两相的PY平直叶圆盘涡轮搅拌釜按不同比率划分了20组,分析其动区域不同比率划分对稳态计算的收敛性、搅拌器的流场速度分布、固体颗粒体积分数分布、悬浮状态及搅拌器功率等结果的影响。结果表明:动区域比率β取值小于1.4时,计算不收敛,增大动区域比率能提高模型计算的收敛性。随着动区域比率增大,计算出的标准浓度差最大值与最小值的误差超过10%,速度与力矩的最大值与最小值误差都未超过2%,即动区域比率变化对模拟出的标准浓度差影响较大,对速度分布、搅拌器功率的影响较小。

关键词：圆盘涡轮式搅拌器收敛性数值模拟多重参考系