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A transferable energy management strategy for hybrid electric vehicles via dueling deep deterministic policy gradient

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Green Energy and Intelligent Transportation 2022年第2期1卷 75-87页

作者： Jingyi Xu Zirui Li guodong du Qi Liu Li Gao Yanan Zhao School of Mechanical Engineering Beijing Institute of Technology100081BeijingChina Department of Transport and Planning Delft University of TechnologyDelft2628 CDthe Netherlands Institute of Dynamic System and Control ETH ZurichSonneggstrasse 38092ZurichSwitzerland

due to the high mileage and heavy load capabilities of hybrid electric vehicles(HEVs),energy management becomes crucial in improving energy *** avoid the over-dependence on the hard-crafted models,deep reinforcement learning(DRL)is utilized to learn more precise energy management strategies(EMSs),but cannot generalize well to different driving situations in most *** driving cycles are changed,the neural network needs to be retrained,which is a time-consuming and laborious task.A more efficient transferable way is to combine DRL algorithms with transfer learning,which can utilize the knowledge of the driving cycles in other new driving situations,leading to better initial performance and a faster training process to *** this paper,we propose a novel transferable EMS by incorporating the DRL method and dueling network architecture for *** results indicate that the proposed method can generalize well to new driving cycles,with comparably initial performance and faster convergence in the training process.

关键词： Energy management strategies Deep reinforcement learning dueling network architecture Transfer learning

Thermodynamics of Cu-Y-I (I=Sn, Zn, Pb) Liquid Solutions

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Journal of Materials Science & Technology 1994年第3期10卷 217-220页

作者： Ting du and guodong LI(Central Iron and Steel Research Institute, Ministry of Metallurgical Industry, Beijing, 100081, China) Central Iron and Steel Research Inst Ministry of Metallurgical Industry Beijing China

The isoactivity of [Y] of samples was obtained in multiple- hole graphite crucibles by controlling the oxygen potential through the reaction 2 [Y]+3CO = Y2O3+3C. The activity interaction coefficients between Y and Sn. Zn, Pb alloying elements were determined by using coniugate gradient method of solving ill-conditioned equations. The equilibrium constant of the reaction 2 [Y]+3 [O] = Y2O3 and the standard free energy of formation of Y2O3 in liquid Cu were obtained at 1200℃

关键词： Pb Liquid Solutions I=Sn Thermodynamics of Cu-Y-I Zn I Cu

Production of reactive oxygen species by PuRBOHF is critical for stone cell development in pear fruit

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Horticulture Research 2021年第1期8卷 3438-3448页

作者： Xiaoqian Wang Siqi Liu Huili Sun Chunyan Liu Xinyue Li Yang Liu Deguo Lyu guodong du College of Horticulture Shenyang Agricultural UniversityShenyang 110866P.R.China

The production of reactive oxygen species(ROS)by NADPH oxidase,which is also referred to as respiratory burst oxidase homolog(RBOH),affects several processes in ***,the role of RBOHs in cell wall lignification is not well *** this study,we show that PuRBOHF,an RBOH isoform,plays an important role in secondary wall formation in pear stone *** were closely associated with lignin deposition and stone cell formation according to microscopy *** addition,according to the results of an in situ hybridization analysis,the stage-specific expression of PuRBOHF was higher in stone cells than in cells of other flesh *** of RBOH activity suppressed ROS accumulation and stone cell lignification in pear ***,transient overexpression of PuRBOHF caused significant changes in the amount of ROS and lignin that accumulated in pear fruit and flesh *** further showed that PuMYB169 regulates PuRBOHF expression,while PuRBOHF-derived ROS induces the transcription of PuPOD2 and *** findings of this study indicate that PuRBOHF-mediated ROS production,which is regulated by a lignin-related transcriptional network,is essential for monolignol polymerization and stone cell formation in pear fruit.

关键词： critical RBO transient

China-US Friendship: Echoes of Harmony

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China Weekly 2024年第8期 32-35页

作者： du guodong 不详

In the spring of 1990,Elizabeth Gardner was sorting her late husband's belongings when she came across a faded exercise sheet adorned with 11 postage *** stamp bore a postmark,with the clearest reading:"Kuliang,Fuzhou... 详细信息

关键词： sorting Harmony Elizabeth

Effect of Ti-enriched Carbonitride on Microstructure and Mechanical Properties of X80 Pipeline Steel

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Journal of Materials Science & Technology 2010年第9期26卷 803-809页

作者： Wei Deng,Xiuhua Gao,Dewen Zhao,Linxiu du,Di Wu and guodong Wang State key laboratory of rolling and automation,Northeastern University,Shenyang 110819,China [a]State key laboratory of rolling and automation Northeastern University Shenyang 110819 China

In this study,two API X80 pipeline steels were fabricated by varying Ti additions,and their microstructures and fracture characteristics were analyzed to investigate the effects of Ti-enriched carbonitride on the tensile properties and Charpy impact *** bainite,a mass of matensite/austenite（M/A）,coarse cubic Ti-enriched inclusions,chain-typed Ti-enriched precipitations,weak toughness and high tensile strength were found as consequences of higher amount of Ti *** large scale and chain-typed Ti-enriched carbonitrides are one kind of crack sources during *** negative effect of higher amount of Ti on the impact properties is increased with decreased temperature.

关键词： X80 pipeline steel Ti-enriched carbonitride Matensite/austenite(M/A) constitute Impact toughness

Ancient Bronzeware:IN THE NAME OF CHINA

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China Weekly 2022年第6期 57-59页

作者： Song Yimin du guodong 不详

A vessel from the Western Zhou Dynasty is the oldest known bronzeware with an inscription that includes the characters for China,China's Palace Museum,alsoknown as the Forbidden City,recently held a cultural relics exhibition titled“The Making of Zhongguo-Origins,Developments and Achievements of Chinese Civilization,”which brought together more than 130 national treasures from 30 museums *** artifacts on display,including bronzeware,ceramics,jades and paintings,span from the Neolithic Age to the Qing Dynasty(1644-1911).

关键词： nationwide ceramics bronze

Eggshell Pottery: Turning dust Into Glory

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China Weekly 2022年第5期 55-57页

作者： Zhang Yue du guodong 不详

Ancient Chinese craftsmencreated exquisite black ceramics with sophisticatedmanufacturing A22.6cm-tall techniques that are still hard to reproduce,In the recent Palace Museum exhibition“The Making of Zhongguo-Origins,Developments and Achievements of Chinese Civilization”in Beijing there is an exquisite but less noticeable item=an eggshell black pottery cup from Longshan.

关键词： ceramics black exhibition

Archaeology:SOUL SEARCHERS

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China Weekly 2022年第7期 58-59页

作者： Zhang Yue du guodong 不详

Dating back to the Neolithic age,an exquisitely painted ceramic vase topped with a sculpted human head offers clues to ideas about death and spirituality held among China's earliest cultures,Less glamorous than jade,gold or silver ware,pottery gets less attention at museum ***,however,argue that pottery is the most important cultural relic for understanding human *** gold or jade,most ceramics are practical and designed for daily *** thus can offer a well-rounded view of the era it came from.

关键词： ceramics ceramic silver

Hydrothermal Synthesis of Molybdenum Disulfide for Lithium Ion Battery Applications

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Chinese Journal of Chemical Engineering 2010年第6期18卷 910-913页

作者： WANG Shiquan LI Guohua du guodong JIANG Xueya FENG Chuanqi GUO Zaiping KIM Seung-Joo Institue of NT-IT Fusion Technology Ajou University Suwon 443-749 Korea Department of Chemistry Hubei University Wuhan 430062 China State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Zhejiang University of Technol-ogy Hangzhou 310032 China Institute for Superconducting and Electronic Materials University of Wollongong Northfield Avenue Wollon-gong NSW 2522 Australia Division of Energy Systems Research Ajou University Suwon 443-749 Korea

Molybdenum disulfide nanoflakes were synthesized by a simple hydrothermal process using sodium molybdate and thiourea as reactants at a relatively low temperature. X-ray diffraction(XRD) and transmission elec-tron microscopy(TEM) indicate that the samples have the structure of 2H-MoS2 and the morphology of nanoflakes with the average thickness around 5-10 nm. The results of electrochemical properties indicate that the morphology and size of MoS2 particles have effects on their capacity when they are used as the anode for lithium ion battery. The as-prepared MoS2 samples have high reversible discharge capacity up to 994.6 mA·h·g-1 for the MoS2-1 elec-trode and 930.1 mA·h·g-1 for the MoS2-2 electrode and show excellent cycling performances. The MoS2-1 electrode has a better cycling stability than the MoS2-2 electrode due to their difference in the uniformity of the samples.

关键词： molybdenum disulfide chemical synthesis electrochemical property electrode material