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Hybrid model for BOF oxygen blowing time prediction based on oxygen balance mechanism and deep neural network

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 106-117页

作者： Xin Shao Qing Liu Zicheng Xin Jiangshan Zhang Tao Zhou shaoshuai Li State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Engineering Research Center of MES Technology for Iron&Steel Production Ministry of EducationBeijing 100083China Laiwu Iron and Steel Group Yinshan Section Steel Co. Ltd.Jinan 271104China

The amount of oxygen blown into the converter is one of the key parameters for the control of the converter blowing process,which directly affects the tap-to-tap time of converter. In this study, a hybrid model based on oxygen balance mechanism (OBM) and deep neural network (DNN) was established for predicting oxygen blowing time in converter. A three-step method was utilized in the hybrid model. First, the oxygen consumption volume was predicted by the OBM model and DNN model, respectively. Second, a more accurate oxygen consumption volume was obtained by integrating the OBM model and DNN model. Finally, the converter oxygen blowing time was calculated according to the oxygen consumption volume and the oxygen supply intensity of each heat. The proposed hybrid model was verified using the actual data collected from an integrated steel plant in China, and compared with multiple linear regression model, OBM model, and neural network model including extreme learning machine, back propagation neural network, and DNN. The test results indicate that the hybrid model with a network structure of 3 hidden layer layers, 32-16-8 neurons per hidden layer, and 0.1 learning rate has the best prediction accuracy and stronger generalization ability compared with other models. The predicted hit ratio of oxygen consumption volume within the error±300 m^(3)is 96.67%;determination coefficient (R^(2)) and root mean square error (RMSE) are0.6984 and 150.03 m^(3), respectively. The oxygen blow time prediction hit ratio within the error±0.6 min is 89.50%;R2and RMSE are0.9486 and 0.3592 min, respectively. As a result, the proposed model can effectively predict the oxygen consumption volume and oxygen blowing time in the converter.

关键词： basic oxygen furnace oxygen consumption oxygen blowing time oxygen balance mechanism deep neural network hybrid model

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齐桓公欲"封禅"事探析

中国典籍与文化 2024年第2期 101-107页

作者：王少帅山东大学文学院

齐桓公欲“封禅”事详见于《史记·封禅书》,然所述封禅事不一定真实存在。刘向《管子书录》的记载和清华简《管仲》提示我们,司马迁在刘向校书前采用的这段记载和缮写定篇后的《管子·封禅篇》在理论上没有必然联系。“封禅”作为一种... 详细信息

齐桓公欲“封禅”事详见于《史记·封禅书》,然所述封禅事不一定真实存在。刘向《管子书录》的记载和清华简《管仲》提示我们,司马迁在刘向校书前采用的这段记载和缮写定篇后的《管子·封禅篇》在理论上没有必然联系。“封禅”作为一种祭礼,它的源头与成篇于战国中期的《礼记·礼器》所载的“升中于天”“飨帝于郊”有密切的关联;又因为《礼器》篇的作者是齐国人,加上齐桓公和管仲是当时的君臣典范,故有管子后学或当时的术士因《礼器》等相关记载附会齐桓公欲“封禅”事。

关键词：封禅齐桓公管仲《史记》

Role of melatonin receptor 1B gene polymorphism and its effect on the regulation of glucose transport in gestational diabetes mellitus

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第1期24卷 78-88页

作者： Lijie WEI Yi JIANG Peng GAO Jingyi ZHANG Xuan ZHOU Shenglan ZHU Yuting CHEN Huiting ZHANG Yuanyuan DU Chenyun FANG Jiaqi LI Xuan GAO Mengzhou HE shaoshuai wang Ling FENG Jun YU Department of Obstetrics and Gynecology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Obstetrics and Gynecology the First Affiliated Hospital of Nanchang UniversityNanchang 330006China Department of Obstetrics and Gynecology University Hospital AachenRWTH Aachen UniversityAachen 52074Germany

Melatonin receptor 1B(MT2,encoded by the MTNR1B gene),a high-affinity receptor for melatonin,is associated with glucose homeostasis including glucose uptake and transport.The rs10830963 variant in the MTNR1B gene is linked to glucose metabolism disorders including gestational diabetes mellitus(GDM);however,the relationship between MT2-mediated melatonin signaling and a high birth weight of GDM infants from maternal glucose abnormality remains poorly understood.This article aims to investigate the relationship between rs10830963 variants and GDM development,as well as the effects of MT2 receptor on glucose uptake and transport in trophoblasts.TaqMan-MGB(minor groove binder)probe quantitative realtime polymerase chain reaction(qPCR)assays were used for rs10930963 genotyping.MT2 expression in the placenta of GDM and normal pregnant women was detected by immunofluorescence,western blot,and qPCR.The relationship between MT2 and glucose transporters(GLUTs)or peroxisome proliferator-activated receptorγ(PPARγ)was established by western blot,and glucose consumption of trophoblasts was measured by a glucose assay kit.The results showed that the genotype and allele frequencies of rs10830963 were significantly different between GDM and normal pregnant women(P<0.05).The fasting,1-h and 2-h plasma glucose levels of G-allele carriers were significantly higher than those of C-allele carriers(P<0.05).Besides,the protein and messenger RNA(mRNA)expression of MT2 in the placenta of GDM was significantly higher than that of normal pregnant women(P<0.05).Melatonin could stimulate glucose uptake and GLUT4 and PPARγprotein expression in trophoblasts,which could be attenuated by MT2 receptor knockdown.In conclusion,the rs10830963 variant was associated with an increased risk of GDM.The MT2 receptor is essential for melatonin to raise glucose uptake and transport,which may be mediated by PPARγ.

关键词： Gestational diabetes mellitus(GDM) Melatonin receptor 1B(MTNR1B) Single nucleotide polymorphism(SNP) Glucose uptake Glucose transporters(GLUTs) Peroxisome proliferator-activated receptorγ(PPARγ)

A strong robustness open-circuit fault diagnosis strategy for novel fault-tolerant electric drive system based on d-q-axis current signal

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Chinese Journal of Aeronautics 2021年第10期34卷 115-127页

作者： Xuefeng JIANG shaoshuai wang Jie LI Daoyu WU Wenxin HUANG Zhenmao HAN School of Automation Nanjing University of Science and TechnologyNanjing 210094China College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing 211106China

To diagnose the Open-Circuit(OC)fault in the novel fault-tolerant electric drive system,based on d-q-axis current signal,a strong robustness diagnosis strategy is proposed and investigated.Fewer independent power supplies and converters are required in the novel fault-tolerant electric drive system based on Dual-Winding Permanent Magnet Motor(DWPMM),and the system’s reliability,usage ratio and power density have been improved compared to the conventional fault-tolerant motor drive system.However,the novel fault-tolerant electric drive system has the OC fault diagnostic false alarms issue when load changes suddenly or under light-load condition.And it lacks the research on the diagnostic method when the system encounters intermittent OC fault in power switches.By theory derivation,simulation and experimental verification,it can be concluded that the proposed strong robustness OC fault diagnosis strategy based on d-q-axis current signal can overcome the OC fault diagnostic false alarms issue when load changes suddenly or under light-load condition.And it can detect and locate the OC fault of single-phase winding in real time,and diagnose the intermittent OC fault of power switches.

关键词： Dual-winding motor Electric drive system Fault-tolerant system Open-circuit fault diagnosis Permanent magnet motor Strong robustness

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双温区脉管制冷机的制冷量主动调控策略

浙江大学学报（工学版） 2024年第1期58卷 169-175,187页

作者：惠贺军吴亦农宋键镗殷旺蒋珍华刘少帅中国科学院上海技术物理研究所上海200083 中国科学院大学北京100049

针对空间探测中须在双温区提供不同制冷量的新需求,提出利用声功回收主动调相器对双温区制冷量进行主动调控的方法.研究分析高温区调相器活塞运动特性对双温区冷指阻抗的影响,得到调相器对双温区冷指声功率分配及回热器效率的影响特性,... 详细信息

针对空间探测中须在双温区提供不同制冷量的新需求,提出利用声功回收主动调相器对双温区制冷量进行主动调控的方法.研究分析高温区调相器活塞运动特性对双温区冷指阻抗的影响,得到调相器对双温区冷指声功率分配及回热器效率的影响特性,实现80 K和40 K双温区制冷量主动调控.数值计算结果显示,调相器相位差对高温区制冷量影响较大,调相器振幅和相位差对低温区制冷量均有明显的影响.实验结果表明,采用基于主动控制调相器活塞运动特性的调节策略,80 K温区制冷量可以在9.2~23.7 W内主动调节,40 K温区制冷量可以在3.2~4.5 W内主动调节.

关键词：脉管制冷机主动调相双制冷温区阻抗分析调控策略

利用主动活塞调相的双温区脉管制冷机环境适应性研究

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工程热物理学报 2024年第1期45卷 7-12页

作者：惠贺军宋键镗蒋珍华殷旺刘少帅吴亦农中国科学院上海技术物理研究所上海200083 中国科学院大学北京100049

为满足双温区制冷需求,通过单压缩机驱动80 K和40 K双温区冷指,且双冷指均采用主动调相器调节冷指内相位差分布,可在实现制冷机轻量化的同时,在双温区高效率制冷。本文基于双温区主动调相脉管制冷机,在制冷机环境温度和调相器相位差发... 详细信息

为满足双温区制冷需求,通过单压缩机驱动80 K和40 K双温区冷指,且双冷指均采用主动调相器调节冷指内相位差分布,可在实现制冷机轻量化的同时,在双温区高效率制冷。本文基于双温区主动调相脉管制冷机,在制冷机环境温度和调相器相位差发生变化时,分别从制冷机内双冷指声功分配、回热器冷端相位差和制冷量变化特性的角度,开展了数值计算分析和实验验证研究。研究结果表明,制冷机在环境温度变化时,通过主动调节调相器活塞运动相位差,双温区冷指能够保持高效率制冷,实现制冷机对环境温度的主动适应。

关键词：脉管制冷机主动调相环境温度双温区

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豫北中原官话的小称形式和语义功能

河南大学学报（社会科学版） 2024年第1期64卷 94-98,155页

作者：申少帅辛永芬河南大学外语学院/中国语言文学博士后流动站河南开封475001 河南大学文学院/语言科学与语言规划研究所河南开封475001

豫北中原官话的小称表达形式可以分为六种,即儿化、附加前缀“圪”、附加前缀“□[·au]/小”、附加后缀“子”、附加后缀“□[·nau]/妮^(Z)[niau^(24)]/[·niou]/[·nio]”和混合叠用。混合叠用属于小称强化式,又可以分为“圪+儿化”... 详细信息

豫北中原官话的小称表达形式可以分为六种,即儿化、附加前缀“圪”、附加前缀“□[·au]/小”、附加后缀“子”、附加后缀“□[·nau]/妮^(Z)[niau^(24)]/[·niou]/[·nio]”和混合叠用。混合叠用属于小称强化式,又可以分为“圪+儿化”“□[·au]/小+儿化”“□[·au]/小+圪+儿化”和“□[·au]/小+/[·nau]/妮^(Z)[niau^(24)]/[·niou]/[·nio]”四个小类。语义功能上,儿化的扩展能力最强,已由词法层面扩展到句法层面,其用于名词的原始小称义开始受到磨损。目前,强化式“□[·au]/小+儿化”已经发展成为豫北中原官话最活跃、能产性最强的名词小称形式。

关键词：豫北中原官话小称类型语义功能

Design and Optimization of Dual-Winding Fault-Tolerant Permanent Magnet Motor

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CES Transactions on Electrical Machines and Systems 2019年第1期3卷 45-53页

作者： Xuefeng Jiang shaoshuai wang Qiang Li Yufei Gao Nanjing University of Science and Technology. the M.S degree in School of Automation Nanjing University of Science and Technology Department of Electrical Engineering School of AutomationNanjing University of Science and Technology

To improve the performance of the traditional fault-tolerant permanent magnet(PM)motor,the design and optimal schemes of dual-winding fault-tolerant permanent magnet motor(DWFT-PMM)are proposed and investigated.In order to obtain small cogging torque ripple and inhibiting the short-circuit current,the air gap surface shape of the PM and the anti short-circuits reactance parameters are designed and optimized.According to the actual design requirements of an aircraft electrical actuation system,the parameters,finite element analysis and experimental verification of the DWFT-PMM after optimal design are presented.The research results show that the optimized DWFT-PMM owns the merits of strong magnetic isolation,physics isolation,inhibiting the short circuit current,small cogging torque ripple and high fault tolerance.

关键词： Dual-winding motor design and optimization fault-tolerance finite element analysis short-circuit fault

The Clinical Value of Artery Umbilical Cord Blood Gas in Predicting Neonate Condition:A Prospective Cohort Study

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Maternal-Fetal Medicine 2021年第3期3卷 176-184页

作者： Xing Xin Weixin Lu Chunhua Ye Hongyan Du shaoshuai wang Ling Feng Department of Obstetrics and Gynecology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430030China Department of Neurosurgery Second Hospital of Lanzhou UniversityLanzhou UniversityLanzhouGansu 730000China Department of Obstetrics and Gynecology Tujia Autonomous County Maternal and Child Health HospitalYichangHubei 443000China

Objective:To evaluate the predictive ability of neonate condition through the traditional parameters and artery umbilical cord blood gas(aUCBG).Methods:A prospective cohort study was conducted in obstetrics and gynecology department between October 2017 and August 2018 at Tongji Hospital in Wuhan,China,and 360 aUCBG samples were collected.The average age of pregnant women was(29.50±4.42)years,range from 19 to 48 years old.The gestational age range from 28+4 weeks to 41+3 weeks at admission.Logistic regression and area under the curve(AUC)from Receiver operating characteristic curves were used to identify risk factors,such as,premature rupture of membranes(PROM),high blood pressure,premature delivery(PD),low 1-minute Apgar scores(Apgar 1),low 5-minute Apgar scores(Apgar 5),pH,base excess,bicarbonate,neonatal blood sugar(NBS),and so on,to predict neonatal condition and evaluate the predictive ability of traditional and aUCBG parameters.Results:In all cases,PROM,PD,Apgar 1,Apgar 5,pH,base excess,bicarbonate,total carbon dioxide,and neonatal blood sugar were risk factors and were associated with poor condition of neonate.Apgar 1 were an independent risk factor.Combined traditional and aUCBG parameters had higher AUC of 0.895(95%confidence interval(C/):0.830-0.960,P<0.001).In cesarean section subgroup,high blood pressure,PD,and Apgar 1 were risk factors and were associated with poor condition of neonate.Apgar 1 and low pH were the independent risk factors.Combined traditional and aUCBG parameters had highest AUC of 0.940(95%C/:0.886-0.993,P<0.001).In vaginal delivery subgroup,maternal age above 35 years,PROM,PD,Apgar 1,Apgar 5,and male newborn were risk factors and were associated with poor condition of neonate.Maternal age above 35 years was an independent risk factor.Combined traditional and aUCBG parameters had highest AUC of 0.897(95%Cl:0.828-0.965,P<0.001).For pregnant women without comorbidities and complications of pregnancy,aUCBG may not be necessat7.Conclusion:In high-risk pregnancies,especially lower Apgar s

关键词： Apgar score Artery umbilical cord blood gas(aUCBG) High-risk Neonate condition pH Predictive ability Pregnancy Risk factor