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Facial expression recognition based on improved ResNet

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中国邮电高校学报：英文版 2023年第1期30卷 28-38页

作者： wang xianlun wang Guangyu Cui Yuxia College of Electromechanical Engineering Qingdao University of Science and TechnologyQingdao 266061China

Facial expression recognition(FER)is a vital application of image processing *** this paper,a FER model based on the residual network is *** proposed model introduces the idea of the DenseNet,in which the outputs of the residual blocks are not simply added but are linked to the channel *** addition,transfer learning is used to reduce training costs and accelerate training *** accuracy and robustness of the proposed FER model were tested by K-fold *** results show that the proposed method has competitive performances on FER2013,FER plus(FERPlus),and the real-world affective faces database(RAF-DB).

关键词： facial expression recognition convolutional neural networks ResNet transfer learning K-fold cross-validation

Research on error compensation of robot based on multi-hole measurement technology and particle swarm optimization

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The Journal of China Universities of Posts and Telecommunications 2021年第4期28卷 88-96页

作者： wang xianlun Sun Yuxuan wang Dong Hu Xiaowei School of Electrical and Mechanical Engineering Qingdao University of Science and TechnologyQingdao 266000China

Robot error compensation is a technique for enhancing the positioning accuracy of the system. This paper presented an error measuring technique for serial robots based on the multi-hole measuring method, combined with the intelligent particle swarm optimisation(PSO) to obtain the optimal solution of the robot’s error compensation values, thereby improving the positioning accuracy of the robot. In the experiment, the robot error was measured using self-made multi-hole measuring plates and probes, and the experimental data were combined with PSO for the error comprehensive analysis. The results showed that on this type of serial robot, the multi-hole measuring method and PSO algorithm had obvious error compensation effects, which effectively improved the positioning accuracy of the robot, with the error reduced by 35% after compensation.

关键词： error model multi-hole measuring technique particle swarm optimisation error compensation

Association of urotensin Ⅱ with angiographic severity of coronary artery disease

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Journal of Geriatric Cardiology 2007年第4期4卷 229-232页

作者： Lifang Zhang Yuannan Ke Yong wang xianlun Li Li Chen Chinese Academy of Medical Sciences & Peking Union Medical College Department of Cardiology China-Japan Friendship Hospital Beijing 100029 China Chinese Academy of Medical Sciences & Peking Union Medical College Department of Cardiology China-Japan Friendship Hospital Beijing 100029 China Chinese Academy of Medical Sciences & Peking Union Medical College Department of Cardiology China-Japan Friendship Hospital Beijing 100029 China Chinese Academy of Medical Sciences & Peking Union Medical College Department of Cardiology China-Japan Friendship Hospital Beijing 100029 China Chinese Academy of Medical Sciences & Peking Union Medical College Department of Cardiology China-Japan Friendship Hospital Beijing 100029 China

Objective The goal of this study was to examine the association between urotensin Ⅱ (U Ⅱ) concentration and the severity of coronary artery disease (CAD). Methods We studied U Ⅱ concentrations in 100 patients with known or suspected CAD referred for cardiac catheterization. Based on coronary angiograms, subjects were classified as having no or mild CAD (stenosis 0.05), but higher in the severe group (score =9) than in the normal or nearly normal group (score<3)(2.50±1.62pmol/L vs 1.61±1.05pmol/L, P=0.03). UⅡ concentration had no relationship with other known risk factors, but it correlated with CAD severity (r=0.213, P=0.034). In multiple regression analysis, U Ⅱ is one of the determinants of the severity of CAD, other than age, abnormal glucose, hypertension and gender. Conclusios U Ⅱ is elevated in severe CAD and there is a significant relationship between U Ⅱ concentration and CAD severity. (J Geriatr Cardiol 2007;4:229-232.)

关键词： arteriosclerosis urotensin Ⅱ coronary artery disease

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人机协作中人体运动预测方法研究综述

机床与液压 2022年第12期50卷 147-152页

作者：王宪伦王天宇青岛科技大学机电工程学院山东青岛266061

当今世界制造业智能化发展趋势下,产品制造过程愈加重视机器人的使用和柔性化生产,轻量灵活的协作机器人与人进行协同作业能有效提高工作效率,实现人与机器的优势互补。但人机协作的开放环境中,动态障碍物如人的运动轨迹具有时变性和不... 详细信息

当今世界制造业智能化发展趋势下,产品制造过程愈加重视机器人的使用和柔性化生产,轻量灵活的协作机器人与人进行协同作业能有效提高工作效率,实现人与机器的优势互补。但人机协作的开放环境中,动态障碍物如人的运动轨迹具有时变性和不确定性,为了使人与机器人的协作过程更安全、流畅,机器人需要感知人类同伴正在进行的动作,预测人体下一步的运动轨迹,并相应地进行自己的运动规划。具体来说,机器人具备早期预测的能力很重要。为了保证人机共享时空下操作人员的安全,使人与机器更高效地协作,介绍了近年来国内外学者针对人机协作安全策略中人体运动预测方法的研究状况,并对其发展趋势和下一步的研究方向进行探讨。

关键词：机器人人机协作动作识别人体运动预测安全

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激光清洗铝合金橡胶涂层数值模拟及实验

激光杂志 2022年第6期43卷 164-169页

作者：刘鹏宇王宪伦张则荣青岛科技大学机电工程学院青岛266100

激光清洗作为一种新型的绿色环保清洁方式,逐渐应用于轮胎模具表面污垢清洗方面。通过有限元仿真与实验对激光清洗轮胎模具橡胶涂层进行研究。利用高斯型脉冲激光作为虚拟热源对铝合金基底表面的橡胶涂层进行清洗数值模拟仿真,模拟结果... 详细信息

激光清洗作为一种新型的绿色环保清洁方式,逐渐应用于轮胎模具表面污垢清洗方面。通过有限元仿真与实验对激光清洗轮胎模具橡胶涂层进行研究。利用高斯型脉冲激光作为虚拟热源对铝合金基底表面的橡胶涂层进行清洗数值模拟仿真,模拟结果表明,重复频率18 kHz时,不同功率橡胶涂层表面温度瞬间急剧升高至上万度,远超烧蚀蒸发温度,达到清洗效果,和矩形脉冲激光烧蚀仿真作对比,矩形激光清洗涂层深度大,效率高。使用重复频率可调的矩形脉冲Nd:YAG激光对铝合金基底表面橡胶涂层进行清洗试验。模拟与试验结果表明,重复频率15 kHz,功率280 W,能量密度为6.603 W/cm^(-2)时,清洗效果很好,完全清除基体表面橡胶涂层而不损伤基底,并且基底不发生氧化反应。

关键词：激光技术激光清洗有限元模拟表面形貌

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基于双流图卷积网络的人体行为识别算法

传感器与微系统 2023年第7期42卷 140-143,147页

作者：王宪伦王广宇孙宇轩青岛科技大学机电工程学院山东青岛266000

针对传统的卷积网络对人体行为识别速度不高或识别精度偏低的问题,提出了基于图卷积网络(GCN)的人体行为识别算法。首先,介绍了时空图卷积网络(ST-GCN)算法,该算法将人体骨架信息归类于图信息,并在时域和空间域上对人体信息进行图卷积运... 详细信息

针对传统的卷积网络对人体行为识别速度不高或识别精度偏低的问题,提出了基于图卷积网络(GCN)的人体行为识别算法。首先,介绍了时空图卷积网络(ST-GCN)算法,该算法将人体骨架信息归类于图信息,并在时域和空间域上对人体信息进行图卷积运算;其次,使用双流GCN进行模型的搭建,双流GCN是对ST-GCN的一种改进,为某些相距很远但某些动作中关系密切的点创建“不可能连接”,并提出骨骼的长度和方向对人体行为识别也起到重要作用的观点。实验结果表明:对于选取的4个行为的平均识别率达到了92.2%,因此,基于双流GCN算法的人体行为识别方法具有可行性。

关键词：图卷积网络人体行为识别时空图卷积网络双流图卷积网络

Theoretical and experimental investigations on single-atom catalysis:Pt1/FeOx for water-gas shift reaction Shan-Fei wang1,§,Yangyang Li2,3,§,Haiyan wang1,Jin-Xia Liang1(✉),Chun Zhu1

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Nano Research 2024年第9期17卷 8627-8637页

作者： Shan-Fei wang Yangyang Li Haiyan wang Jin-Xia Liang Chun Zhu Botao Qiao School of Chemistry and Chemical Engineering Guizhou UniversityGuiyang 550025China CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China

Oxide-supported metal single-atom catalysts(SACs)have exhibited excellent catalytic performance for water-gas shift(WGS)***,we report the single-atom catalyst Pt1/FeOx exhibits excellent medium temperature catalytic performance for WGS reactions by the density functional theory(DFT)calculations and experimental *** calculations indicate that H_(2)O molecules are easily dissociated at oxygen vacancies,and the formed*OH and*O are adsorbed on Pt1 single atoms and the adjacent O atoms,*** studying four possible reaction mechanisms,it is found that the optimal WGS reaction pathway is proceeded along the carboxyl mechanism(pathway III),in which the formation of*COOH intermediates can promote the stability of Pt1/FeOx SAC and the easier occurrence of WGS *** energy barrier of the rate-determining step during the entire reaction cycle is only 1.16 eV,showing the high activity for the medium temperature WGS reaction on Pt1/FeOx SAC,which was verified by experimental ***,the calculated turnover frequencies(TOFs)of CO_(2)and H_(2)formation on Pt1/FeOx at 610 K(337℃)can reach up to 1.14×10^(-3)s^(-1)·site^(-1)through carboxyl *** this work,we further expand the application potential of Pt1/FeOx SAC in WGS reaction.

关键词： water-gas shift(WGS)reaction single-atom catalyst(SAC) density functional theory(DFT) thermocatalysis

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木聚糖酶对戊聚糖及面团品质的影响

食品科学 2017年第15期38卷 196-200页

作者：许真王显伦鹤壁职业技术学院食品工程学院河南鹤壁458030 华中农业大学食品科学技术学院湖北武汉430070

研究添加不同质量浓度(0、50、100、150 mg/kg)木聚糖酶对面团中戊聚糖吸水率、内黏度、平均相对分子质量及面团品质的影响,探讨木聚糖酶对面团影响的作用机理。结果表明:木聚糖酶添加量在0~150 mg/kg范围时,戊聚糖吸水能力降低、内黏... 详细信息

研究添加不同质量浓度(0、50、100、150 mg/kg)木聚糖酶对面团中戊聚糖吸水率、内黏度、平均相对分子质量及面团品质的影响,探讨木聚糖酶对面团影响的作用机理。结果表明:木聚糖酶添加量在0~150 mg/kg范围时,戊聚糖吸水能力降低、内黏度下降、平均相对分子质量变小;当添加量为150 mg/kg时,戊聚糖吸水能力最低(水溶性戊聚糖为4.28 g/g,水不溶性戊聚糖为7.56 g/g)、内黏度最小(水溶性戊聚糖为35 m L/g,水不溶性戊聚糖为4 035 m L/g)、平均相对分子质量最小(水溶性戊聚糖为360 298,水不溶性戊聚糖为1 002 309)。木聚糖酶的添加造成面团的吸水率降低、形成时间及稳定时间缩短、弱化度提高、抗拉伸阻力降低、延展性提高,从而改善面团的加工性能。

关键词：木聚糖酶面团品质戊聚糖吸水能力内黏度分子质量

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真菌α-淀粉酶对发酵面团产气力的影响研究

粮油加工 2007年第9期 103-105页

作者：王显伦河南工业大学

本文研究了真菌α-淀粉酶不同添加量、不同温度、不同时间对面团的发酵力的影响,结果表明:真菌α-淀粉酶添加量对发酵面团产气力影响不大,温度对发酵面团产气力影响较大,随温度升高,开始产气力逐渐增大,随后随着时间延长产气力下降。

关键词：真菌α-淀粉酶产气力温度