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Decision-making models on perceptual uncertainty with distributional reinforcement learning

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Green Energy and Intelligent Transportation 2023年第2期2卷 29-39页

作者： shuyuan xu Qiao Liu Yuhui Hu Mengtian xu Jiachen Hao School of Mechanical Engineering Beijing Institute of Technology100081 BeijingChina Beili Huidong(Changshu)Vehicle Technology Company 215513 SuzhouChina

Decision-making for autonomous vehicles in the presence of obstacle occlusions is difficult because the lack of accurate information affects the *** methods may lead to overly conservative strategies and timeconsuming computations that cannot be balanced with *** propose to use distributional reinforcement learning to hedge the risk of strategies,optimize the worse cases,and improve the efficiency of the algorithm so that the agent learns better actions.A batch of smaller values is used to replace the average value to optimize the worse case,and combined with frame stacking,we call it Efficient-Fully parameterized Quantile Function(EFQF).This model is used to evaluate signal-free intersection crossing scenarios and makes more efficient moves and reduces the collision rate compared to conventional reinforcement learning algorithms in the presence of perceived *** model also has robustness in the case of data loss compared to the method with embedded long and short term memory.

关键词： Autonomous vehicles Reinforcement learning Sensing occlusion Partially observable markov decision process Unsiganlized intersections

UPLC-ESI-MS/MS法测定替格瑞洛中三环已基膦的含量

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山东化工 2024年第16期53卷 147-150,155页

作者：徐淑媛王玉如卢忠秋刘晓敏穆双双兰公剑南京正大天晴制药有限公司江苏南京210046

含膦物质具有潜在基因毒性,在微量的水平下可直接造成DNA损伤,进而引发癌症,威胁人类健康,因此,需对药物中该类杂质进行严格控制。本研究建立一种方法用于替格瑞洛中的三环己基膦的检测。使三环己基膦与过氧化氢反应衍生成为三环己基氧... 详细信息

含膦物质具有潜在基因毒性,在微量的水平下可直接造成DNA损伤,进而引发癌症,威胁人类健康,因此,需对药物中该类杂质进行严格控制。本研究建立一种方法用于替格瑞洛中的三环己基膦的检测。使三环己基膦与过氧化氢反应衍生成为三环己基氧膦;采用Agilent Poroshell 120 EC-C_(18)色谱柱(100 mm×4.6 mm,2.7μm);流动相为0.1%甲酸-0.1%甲酸甲醇(体积比5∶95);流速为0.5 mL/min,柱温30℃;采用电喷雾离子源正离子扫描,以多反应监测模式采集定量离子对297.2→83对三环己基氧膦进行检测。三环己基氧膦在浓度为1.45~28.90 ng/mL范围内与峰面积呈现良好的线性关系(r=0.9998);定量限为0.14 ng/mL;检测限为0.072 ng/mL;平均加样回收率为99.5%,RSD为5.4%(n=9)。本方法以过氧化氢为氧化剂将三环基膦衍生氧化成为更稳定的三环己基氧膦后采用UPLC-ESI-MS/MS测定,该方法专属性强、灵敏度高、准确度好、分析时间短,可用于替格瑞洛中三环己基膦的检测,有助于提高抗血小板药物替格瑞洛的临床安全性。

关键词：基因毒杂质三环己基膦衍生超高效液相色谱-质谱联用

气相色谱—串联质谱法测定阿哌沙班中2-氯乙酰乙酸乙酯的残留量

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山东化工 2024年第9期53卷 136-138页

作者：卢忠秋王玉如刘晓敏徐淑媛穆双双兰公剑南京正大天晴制药有限公司江苏南京210046

目的:建立一种气相色谱—串联质谱(GC-MS/MS)方法,用于测定阿哌沙班中潜在基因毒性杂质2-氯乙酰乙酸乙酯的残留量。方法:用聚乙二醇[VF-WAXms(30 mm×0.25 mm×0.25μm)]为固定液的毛细管色谱柱;进样口温度为230℃;流速1.0 mL/min;载气... 详细信息

目的:建立一种气相色谱—串联质谱(GC-MS/MS)方法,用于测定阿哌沙班中潜在基因毒性杂质2-氯乙酰乙酸乙酯的残留量。方法:用聚乙二醇[VF-WAXms(30 mm×0.25 mm×0.25μm)]为固定液的毛细管色谱柱;进样口温度为230℃;流速1.0 mL/min;载气:氦气;不分流进样。采用电子轰击离子源(EI),选择离子监测模式(SIM)。结果:2-氯乙酰乙酸乙酯在0.05~1.02μg/mL质量浓度范围内呈现良好的线性关系(r=0.9985);定量限浓度是0.02μg/mL;检出限是0.01μg/mL;三份不同浓度水平的平均回收率为97.9%(RSD=4.2%)。结论:所建立的GC-MS/MS测定方法灵敏度高、专属性强和准确度好,可用于阿哌沙班中2-氯乙酰乙酸乙酯的测定。

关键词：阿哌沙班基因毒性杂质 2-氯乙酰乙酸乙酯气相色谱—串联质谱

Engineering Brain: Metaverse for future engineering

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AI in Civil Engineering 2022年第1期1卷 3-20页

作者： Xiangyu Wang Jun Wang Chenke Wu shuyuan xu Wei Ma Australasian Joint Research Centre for Building Information Modelling Curtin UniversityPerthWA 6102Australia School of Engineering Design and Built EnvironmentWestern Sydney UniversityKingswoodNSW 2745Australia Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhenChina School of Civil Engineering and Architecture Zhejiang Sci-Tech UniversityHangzhou 310018China

The past decade has witnessed a notable transformation in the Architecture,Engineering and Construction(AEC)industry,with efforts made both in the academia and industry to facilitate improvement of efficiency,safety and sustainability in civil *** advances have greatly contributed to a higher level of automation in the lifecy-cle management of civil assets within a digitalised *** integrate all the achievements delivered so far and further step up their progress,this study proposes a novel theory,Engineering Brain,by effectively adopting the Metaverse concept in the field of civil ***,the evolution of the Metaverse and its key supporting technologies are first reviewed;then,the Engineering Brain theory is presented,including its theoretical background,key components and their *** of this theory’s implementation within the AEC sector are offered,as a description of the Metaverse of future *** a comparison between the proposed Engi-neering Brain theory and the Metaverse,their relationships are illustrated;and how Engineering Brain may function as the Metaverse for future engineering is further *** an innovative insight into the future engineering sector,this study can potentially guide the entire industry towards its new era based on the Metaverse environment.

关键词： Metaverse Engineering Brain Mixed Reality AI Computer vision Edge computing 5G NFT

基于地下水数值模型的保护矿区水源井禁采区界定

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中国煤炭 2016年第12期42卷 45-49页

作者：徐树媛山西省煤炭地质勘查研究院山西省太原市030031

亨元顺煤矿开采必将对矿区内既有供水水源地构成影响,不仅使取水含水层结构破坏,而且矿井排水形成的地下水降落漏斗也将导致水源井水位降低、供水量明显减少。为了确保煤矿开采情况下水源井供水不受影响,并尽可能地减少留设煤柱资源,应... 详细信息

亨元顺煤矿开采必将对矿区内既有供水水源地构成影响,不仅使取水含水层结构破坏,而且矿井排水形成的地下水降落漏斗也将导致水源井水位降低、供水量明显减少。为了确保煤矿开采情况下水源井供水不受影响,并尽可能地减少留设煤柱资源,应用Visual Modflow软件建立了水文地质概念模型和数学模型,预测煤矿开采对供水水源井的影响,并根据数值模拟结果与矿井开拓部署,采用试算模拟的方法划定了水源地禁采区范围。

关键词：数值模拟煤炭开采水源井太原组含水层禁采区

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超采区地下水位控制和考核指标确定方法

人民黄河 2024年第3期46卷 64-69页

作者：帅官印崔伟哲邵景力崔亚莉张秋兰张喆徐树媛中国地质大学(北京)水资源与环境学院北京100083 中共天津市武清区委组织部天津301700 山西能源学院地质与测绘系山西晋中030600

为了有效管控地下水超采区,从区域控制和漏斗区控制两个角度考虑,提出一种选取地下水控制井以及确定控制水位和考核水位指标的方法。对于整个超采区,采用泰森多边形法划定每口控制井的控制面积,将每口控制井的控制面积占区域面积的比例... 详细信息

为了有效管控地下水超采区,从区域控制和漏斗区控制两个角度考虑,提出一种选取地下水控制井以及确定控制水位和考核水位指标的方法。对于整个超采区,采用泰森多边形法划定每口控制井的控制面积,将每口控制井的控制面积占区域面积的比例作为权重,计算出区域面积加权平均水位,进而根据与该平均水位的接近程度,选出一口区域水位控制井,并将其最近平水年年末的水位作为今后的控制和考核水位。但是,当评价年为枯水年时,需要在控制水位的基础上减去松弛量确定考核水位。对于地下水漏斗区,利用水位等值线图,判断漏斗分布情况,进而从漏斗中心附近选取一口控制井,同样也将其最近平水年年末的水位作为控制和考核水位。以河北省馆陶县为例,选取的区域和漏斗控制井分别为监测井W16和W17;当政府未制定水位恢复规划时,区域控制水位确定为17.13 m;当政府制定了水位恢复规划时,比如5 a内水位恢复0.5 m,那么区域控制水位需要在17.13 m的基础上每年增加0.1 m;丰水年、平水年考核水位等于控制水位,枯水年考核水位等于控制水位减去0.93 m(松弛量);漏斗区控制和考核水位均确定为12.19 m。

关键词：超采区地下水漏斗区控制水位考核水位馆陶县

三种记忆方法下外显和内隐记忆在两类测验成绩中贡献大小的比较

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心理科学 2005年第6期28卷 1410-1414页

作者：李磊徐淑媛江西师范大学教育学院南昌330027

采用实验性加工分离的方法,定量分析比较三种英语单词记忆方法下外显记忆和内隐记忆在即时再认列表测验和即时再认句中测验成绩中的贡献大小。结果表明:(1)在即时再认列表测验上,用“呈现机械”方法学习英语单词的被试获得的成绩中,外... 详细信息

采用实验性加工分离的方法,定量分析比较三种英语单词记忆方法下外显记忆和内隐记忆在即时再认列表测验和即时再认句中测验成绩中的贡献大小。结果表明:(1)在即时再认列表测验上,用“呈现机械”方法学习英语单词的被试获得的成绩中,外显记忆的贡献显著大于内隐记忆的贡献;用“推断理解”方法学习英语单词的被试获得的成绩中,内隐记忆的贡献显著大于外显记忆的贡献(2)与外显记忆相比,内隐记忆在英语单词测验成绩中贡献的大小对材料在学习阶段和测验阶段呈现形式上相似性的变化更敏感。

关键词：记忆方法外显记忆内隐记忆即时再认测验贡献

Research Advances in Detection Methods of Plant Growth Regulators for Agricultural Products

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Agricultural Biotechnology 2021年第3期10卷 71-75页

作者： shuyuan xu Lei WANG Haitao ZHAO Huihui CAO Shuai WANG Sining TANG Jianhua WANG Tangshan Food and Drug Comprehensive Testing Center Tangshan 063000China Tangshan Institute of Industrial Technology for Functional Agricultural Products Tangshan 063000China Hebei Agricultural Products Quality and Safety Testing Innovation Center Tangshan 063000China Hebei Institute of Industrial Technology for Peanut Tangshan 063000China

In recent years,plant growth regulators are widely used in agricultural *** the toxicity of plant growth regulator residues has gained increasing concerns,trace analysis methods for plant growth regulators have been *** this paper,the major methods with advantages and disadvantages for the detection and pre-treatment of plant growth regulator residues in agricultural products were summarized,including gas chromatography(GC),high performance liquid chromatography(HPLC),chromatographic technique combined with mass spectrometry,enzyme-linked immunosorbent assay(ELISA),capillary electrophoresis(CE)and so ***,the development prospects were also discussed.

关键词： Agricultural products Plant growth regulator Detection method

Bi Nanoparticles Anchored in N-Doped Porous Carbon as Anode of High Energy Density Lithium Ion Battery

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Nano-Micro Letters 2018年第4期10卷 10-23页

作者： Yaotang Zhong Bin Li Shumin Li shuyuan xu Zhenghui Pan Qiming Huang Lidan Xing Chunsheng Wang Weishan Li School of Chemistry and Environment South China Normal University Engineering Research Center of MTEES (Ministry of Education) Research Center of BMET (Guangdong Province) Engineering Laboratory of OFMHEB (Guangdong Province) Key Laboratory of ETESPG (GHEI) and Innovative Platform for ITBMD (Guangzhou Municipality)South China Normal University Department of Chemical and Bimolecular Engineering University of MarylandCollege Park

A novel bismuth–carbon composite, in which bismuth nanoparticles were anchored in a nitrogen-doped carbon matrix(Bi@NC), is proposed as anode for high volumetric energy density lithium ion batteries(LIBs).Bi@NC composite was synthesized via carbonization of Zn-containing zeolitic imidazolate(ZIF-8) and replacement of Zn with Bi, resulting in the N-doped carbon that was hierarchically porous and anchored with Bi nanoparticles. The matrix provides a highly electronic conductive network that facilitates the lithiation/delithiation of ***, it restrains aggregation of Bi nanoparticles and serves as a buffer layer to alleviate the mechanical strain of Bi nanoparticles upon Li insertion/*** these contributions, Bi@NC exhibits excellent cycling stability and rate capacity compared to bare Bi nanoparticles or their simple composites with carbon. This study provides a new approach for fabricating high volumetric energy density LIBs.

关键词： Porous N-doped carbon Bi nanoparticles Anode Lithium-ion battery High energy density