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Data-driven Decision-making Strategies for Electricity Retailers:A Deep Reinforcement Learning Approach

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CSEE Journal of Power and Energy Systems 2021年第2期7卷 358-367页

作者： yuankun liu Dongxia Zhang Hoay Beng Gooi Department of Electrical Engineering Tsinghua UniversityBeijing 100084China Electric Power Research Institute Beijing 100192China Nanyang Technological University Nanyang AvenueSingapore 639798Singapore

With the continuous development of the electricity market,the electricity retailers,as the intermediaries between producers and consumers,have emerged in some of the liberalized electricity ***,the electricity retailer faces many increasingly significant challenges from the complexities and uncertainties in both the supply and consumption *** paper applies a data-driven decision-making strategy via Advantage Actor-Critic(A2C)and Deep Q-Learning(DQN)for the electricity *** retailers’profits and consumers’costs are both taken into *** study verifies that the applied data-driven methods can handle the decision-making problem as well as promote the profitability of retailers in the electricity ***,A2C is more appropriate than DQN in our *** effectiveness of the applied data-driven methods is validated by using real-world data.

关键词： Artificial intelligence electricity market demand response smart grid

Optimization Strategy Based on Deep Reinforcement Learning for Home Energy Management

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CSEE Journal of Power and Energy Systems 2020年第3期6卷 572-582页

作者： yuankun liu Dongxia Zhang Hoay Beng Gooi China Electric Power Research Institute Beijing 100192China Nanyang Technological University Nanyang AvenueSingapore 639798Singapore

With the development of a smart grid and smart home,massive amounts of data can be made available,providing the basis for algorithm training in artificial intelligence *** continuous improving conditions are expected to enable the home energy management system(HEMS)to cope with the increasing complexities and uncertainties in the enduser side of the power grid *** this paper,a home energy management optimization strategy is proposed based on deep Q-learning(DQN)and double deep Q-learning(DDQN)to perform scheduling of home energy *** applied algorithms are model-free and can help the customers reduce electricity consumption by taking a series of actions in response to a dynamic *** the test,the DDQN is more appropriate for minimizing the cost in a HEMS compared to *** the process of method implementation,the generalization and reward setting of the algorithms are discussed and analyzed in *** results of this method are compared with those of Particle Swarm Optimization(PSO)to validate the performance of the proposed *** effectiveness of applied data-driven methods is validated by using a real-world database combined with the household energy storage model.

关键词： Deep reinforcement learning demand response home energy management system smart grid

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虚拟仿真与人因工程融合的实验教学探索

实验室研究与探索 2024年第4期43卷 84-87页

作者：石南南刘晗李振宝王利辉刘元坤北京工业大学土木工程国家级实验教学示范中心(北京工业大学) 北京100124 北京工业大学土木工程国家级虚拟仿真实验教学中心(北京工业大学) 北京100124

利用多媒体、人机交互和虚拟现实等技术完成虚拟仿真和人因工程实验平台的建设。以实际教学项目为例,通过虚拟灾害环境下的人机交互仿真技术增强实验的互动性和沉浸感,提升整体教学效果并完善教学评价体系。实践表明,虚拟仿真与人因工... 详细信息

利用多媒体、人机交互和虚拟现实等技术完成虚拟仿真和人因工程实验平台的建设。以实际教学项目为例,通过虚拟灾害环境下的人机交互仿真技术增强实验的互动性和沉浸感,提升整体教学效果并完善教学评价体系。实践表明,虚拟仿真与人因工程融合应用为高校提供以实践创新能力为导向的实验教学思路,有利于培养综合创新型人才。

关键词：虚拟仿真人因工程实验教学土木工程

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面向高反物体的区域映射自适应条纹投影方法

激光杂志 2024年第5期45卷 34-40页

作者：王启江刘元坤魏振东王杰于馨四川大学电子信息学院成都610064

对于具有高反射率表面物体的测量,传统条纹投影方法无法测量出完整的三维信息。为了解决这一问题,采用了区域映射条纹投影方法(RMAFP),通过图像灰度值区分饱和区域,再采用改进的相移算法,得到饱和区域的相位与饱和度;相位值实现投影区... 详细信息

对于具有高反射率表面物体的测量,传统条纹投影方法无法测量出完整的三维信息。为了解决这一问题,采用了区域映射条纹投影方法(RMAFP),通过图像灰度值区分饱和区域,再采用改进的相移算法,得到饱和区域的相位与饱和度;相位值实现投影区域映射,再投影根据饱和度修正的标准条纹图,对原饱和区域重新测量,即可消除饱和现象,结合原非饱和区域像素的高精度相位,就能完成对高反物体的准确测量。实验过程仅需两轮投影即可实现,实验结果显示高反点的测量准确率为98%,同时对所有高反点均能得到较为准确的测量结果,表明该方法切实可行,可以完整地对复杂高反射率表面进行测量。

关键词：高反射率表面自适应条纹投影坐标映射

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泻白散研究进展

中国民间疗法 2024年第9期32卷 120-123页

作者：崔翠翠孙建新刘元昆山东省威海市中医院山东威海264200

该文总结分析泻白散的临床应用和现代制剂研究进展,检索泻白散的有效物质基础。历代医家肯定泻白散有清泄肺热、止咳平喘的作用,确定泻白散在治疗肺热咳嗽方面的地位。目前,泻白散被广泛应用于临床各科疾病的治疗中。泻白散入血化合物... 详细信息

该文总结分析泻白散的临床应用和现代制剂研究进展,检索泻白散的有效物质基础。历代医家肯定泻白散有清泄肺热、止咳平喘的作用,确定泻白散在治疗肺热咳嗽方面的地位。目前,泻白散被广泛应用于临床各科疾病的治疗中。泻白散入血化合物主要是黄酮类、生物碱类和有机酸类物质,治疗肺炎的潜在有效成分可能是槲皮素、血根碱、山柰酚、β-谷甾醇等。泻白散的现代制剂研究较少,主要是以不同的化学成分为指标,以饮片的粒度、煎煮、过滤、浓缩干燥等工艺参数为考察项目,优选泻白散水煎液冻干粉的最佳制备工艺。作为儿科用药,泻白散口感不佳,一些有效成分在制剂研究中没有体现。

关键词：泻白散《小儿药证直诀》物质基础制剂研究临床应用

Elevated carbon dioxide stimulates nitrous oxide emission in agricultural soils: A global meta-analysis

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Pedosphere 2022年第1期32卷 3-14页

作者： Yilin DU Xinyu GUO Jinxing LI yuankun liu Jipeng LUO Yongchao LIANG Tingqiang LI Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Hangzhou 310058China National Demonstration Center for Experimental Environment and Resources Education Zhejiang UniversityHangzhou 310058China

Elevated carbon dioxide (CO_(2))(e CO_(2)) has been shown to affect the nitrous oxide (N_(2)O) emission from terrestrial ecosystems by altering the interaction of plants,soils,and ***,the impact of e CO_(2) on the N_(2)O emission from agricultural soils remains poorly *** meta-analysis summarizes the effect of e CO_(2) on N_(2)O emission in agricultural ecosystems and soil physiochemical and biological characteristics using 50 publications *** e CO_(2) effect values,which equal to the percentage changes of N_(2)O emission under e CO_(2),were calculated based on the natural logarithm of the response ratio to e CO_(2).We found that e CO_(2) significantly increased N_(2)O emission (by 44%),which varied depending on experimental conditions,agricultural practices,and soil *** addition,e CO_(2) significantly increased soil water-filled pore space (by 6%),dissolved organic carbon content (by11%),and nitrate nitrogen content (by 13%),but significantly reduced soil p H (by 1%).Moreover,e CO_(2) significantly increased soil microbial biomass carbon(by 28%) and soil microbial biomass nitrogen (by 7%) ***,e CO_(2) significantly increased the abundances of ammonia-oxidizing bacteria(AOB) amo A (by 21%),nir K (by 15%),and nir S (by 15%),but did not affect the abundances of ammonia-oxidizing archaea (AOA) amo A and nos *** findings indicate that e CO_(2) substantially stimulates N_(2)O emission in agroecosystems and highlight that optimization of nitrogen management and agronomic options might suppress this stimulation and aid in reducing greenhouse effect.

关键词： agricultural practices agroecosystems climate change experimental conditions greenhouse gas soil properties

四种植物提取物及其组合物抑制皮脂分泌的功效

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香料香精化妆品 2024年第4期 193-198页

作者：方圆圆刘苑坤吴瑶瑶常晓维珀莱雅化妆品股份有限公司上海研发中心上海201114 未名拾光生物科技有限公司研发创新中心浙江杭州310030

以淡竹叶、柳兰、红葡萄和胀果甘草这4种植物提取物为研究对象,通过体外皮脂腺细胞模型和在体测试对其进行功效研究。通过CCK-8法检测各植物提取物对皮脂腺细胞活性的影响,用尼罗红染色法检测提取物对皮脂腺细胞中脂质含量的影响。再将... 详细信息

以淡竹叶、柳兰、红葡萄和胀果甘草这4种植物提取物为研究对象,通过体外皮脂腺细胞模型和在体测试对其进行功效研究。通过CCK-8法检测各植物提取物对皮脂腺细胞活性的影响,用尼罗红染色法检测提取物对皮脂腺细胞中脂质含量的影响。再将4种植物提取物进行复配,研究植萃组合物对皮脂腺细胞皮脂分泌的抑制效果,并与异维A酸进行功效比较。最终经人体测试证实了该组合物具有控油功效,可应用于控油化妆品的开发。

关键词：植物提取物控油功效皮脂腺细胞

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钢筋混凝土损伤梁受弯性能的试验及仿真分析

黑龙江交通科技 2024年第1期47卷 98-101页

作者：任郅祺黄巍夏登辉刘庆涛刘沅锟孙萌哈尔滨学院黑龙江哈尔滨150040

为研究钢筋混凝土梁损伤程度对抗弯承载力的影响,采取试验方法对9片不同设计参数的钢筋混凝土损伤梁进行静载试验,分析了不同损伤程度、设计参数对损伤梁抗弯承载力的影响规律。采用数值分析法对损伤梁静载试验进行了仿真模拟。采用回... 详细信息

为研究钢筋混凝土梁损伤程度对抗弯承载力的影响,采取试验方法对9片不同设计参数的钢筋混凝土损伤梁进行静载试验,分析了不同损伤程度、设计参数对损伤梁抗弯承载力的影响规律。采用数值分析法对损伤梁静载试验进行了仿真模拟。采用回归法对试验和数值分析结果系统分析,给出了钢筋混凝土梁在不同损伤状态下,纵筋配筋率和混凝土强度对极限承载力的影响规律:纵筋配筋率1.0%时,损伤程度为原梁极限承载力的60%~70%的情况下,损伤梁的极限承载力为原梁的85%~90%之间;损伤程度为梁极限承载力的70%~90%的情况下,损伤梁的极限承载力为原梁的80%~85%之间。损伤梁的极限承载力随着纵筋配筋率、混凝土强度增加而提高,提高幅度在分别在35%~53%和10%~21%之间。

关键词：钢筋混凝土梁损伤程度数值分析受弯性能

Generic nonlinear error compensation algorithm for phase measuring profilometry

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Chinese Optics Letters 2021年第10期19卷 19-23页

作者： Xin Yu Shanshan Lai yuankun liu Wenjing Chen Jimpeng Xue Qican Zhang Opto-Electronic Department Sichuan UniversityChsngdu 610065China School of Aeronautics and Astronautics Sichuan UniversityChengdu 610065China

In this Letter,the periodical errors,which are caused by the nonlinear effect of the commercial projector and camera,are analyzed as a more generic single-coefficient *** probability density function of the wrapped phase distributions is used as a tool to find the compensation *** the compensation coefficient is detected,on the premise of ensuring accuracy,a correlation algorithm process is used to replace the traditional iterative ***,the proposed algorithm improves the efficiency of coefficient detection *** computer simulation and experiment show the effectiveness of this method.

关键词： nonlinear response phase error probability density function three-dimensional sensing