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Convolutional Neural Networks for Facial Expression Recognition with Few Training Samples

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Convolutional Neural Networks for Facial Expression Recognit...

Research on the Control Strategy of Phase-Change Heat Storage Station with Automatic Generation System in Power Network Peak Regulation and Frequency Modulation

第37届中国控制会议

作者： Zhongzhao Xie yongbo li Xinmei Wang Wendi Cai Jing Rao Zhenzhu liu School of Automation China University of Geosciences Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems

Facial expression recognition（FER） plays an important role in human-machine interaction. An assistant robot having a close interaction with human being should be able to recognize human facial expression. FER is a non-trivial problem because each individual has his own way to reveal his emotion and the facial expressions of two different persons may not be totally identical. Hence,facial expression recognition is still a challenging problem in computer vision. In this work, we propose a simple solution for facial expression recognition that uses a combination of Convolutional Neural Network and specific image pre-processing *** experiments employed to evaluate our technique were carried out using two largely used public databases（CK+, JAFFE）.A study of the impact of each image pre-processing operation in the accuracy rate is presented. The proposed method: achieves competitive results when compared with other facial expression recognition methods-97.85% of accuracy in the CK+ database-it is fast to train,and it allows for real time facial expression recognition with standard computers.

关键词： Facial Expression Recognition Human-machine Interaction Convolutional Neural Network

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Research on the Control Strategy of Phase-Change Heat Storag...

论权力建构视野下档案职业活动主客体的角色转变

第30届中国控制与决策会议

作者： Qingqi Zhao yongbo li Hongyu Zhang Tingxu Gao Yi Yang Wen Zheng State Grid liaoning Electric Power Supply Co.LTD School of Information Science & Engineering Northeastern University Baicheng Power Supply Company Jilin Provincial Power Grid Corp

In this paper, the operation strategy of thermal power units after the configuration of phase change heat storage station is put forward, and the mathematical model for calculating the peak-shaving capacity of thermal power units after the allocation of phase change heat storage stations is established. Based on the analysis of frequency requirements of electric power system, puts forward the analysis of high frequency and low frequency demand method by using the discrete Fourier transform, and the actual system all day long the proportion of high frequency components are quantitatively analyzed. Analyzes the effect of two typical 300 MW and 200 MW heating units in Northeast China on improving peak shaving capacity after installing heat storage stations. The results show that the peak shaving capacity of the two units can be increased by 21% and 14% at a given heat load level in the middle heating period. And based on the actual system data, the paper simulates and analyzes the FM strategy of energy storage participating in automatic generation control（AGC）. The results show that the flexible allocation of energy storage resources based on area regulation requirement（ARR） has a better FM effect.

关键词： Phase-change heat storage station peak-shaving frequency modulation automatic generation control(AGC) cogeneration of heat and electricity

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档案管理 2019年第2期 27-29页

作者：李永波上海大学图书情报档案系

随着权力与档案的关系逐渐成为档案学界的研究热点,档案职业活动中档案管理者和档案实体的传统角色与定位开始受到一些档案学者和历史研究者的质疑。本文从档案职业活动主客体两个角度出发,在探讨两者角色变化的同时,阐明两者在面对质... 详细信息

随着权力与档案的关系逐渐成为档案学界的研究热点,档案职业活动中档案管理者和档案实体的传统角色与定位开始受到一些档案学者和历史研究者的质疑。本文从档案职业活动主客体两个角度出发,在探讨两者角色变化的同时,阐明两者在面对质疑时应如何完善新的角色定位,以突破权力构建档案时造成的消极影响。

关键词：权力档案档案工作者档案职业活动

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装配式混凝土框架顶层端节点抗震性能试验

同济大学学报（自然科学版） 2019年第5期47卷 600-608页

作者：赵勇李永波毕琼邓世斌同济大学土木工程学院上海200092 中国建筑西南设计研究有限公司四川成都610041

进行了5个配置500 MPa级纵筋框架顶层端节点试件的低周反复加载试验,研究了采用两种新型构造的装配整体式混凝土框架顶层端节点的破坏形态、滞回曲线、骨架曲线和位移延性等抗震性能及承载力,并提出了柱端无上伸节点的斜截面受弯承载力... 详细信息

进行了5个配置500 MPa级纵筋框架顶层端节点试件的低周反复加载试验,研究了采用两种新型构造的装配整体式混凝土框架顶层端节点的破坏形态、滞回曲线、骨架曲线和位移延性等抗震性能及承载力,并提出了柱端无上伸节点的斜截面受弯承载力计算方法.结果表明:装配式试件均发生了梁端受弯破坏,且集中在梁端结合面较小范围内,但梁水平叠合面未见开裂;装配式试件的滞回曲线相对现浇试件更为饱满,其位移延性和耗能能力均优于现浇试件;装配式试件的位移延性系数为2.54～3.66,极限位移角为1/29～1/26,且柱端无上伸试件的延性略优于柱端上伸试件;装配式试件的极限承载力比现浇试件平均约低10%,但其极限承载力计算值与试验值之比平均为0.62～0.71,仍具有较高的安全储备.

关键词：装配整体式混凝土框架顶层端节点低周反复加载试验抗震性能

Bridging buried interface enable 24.67%-efficiency doctor-bladed perovskite solar cells in ambient condition

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Nano Research 2024年第9期17卷 8068-8076页

作者： Jianhui Chang Erming Feng Xiangxiang Feng Hengyue li Yang Ding Caoyu Long Siyuan Lu Haixia Zhu Wen Deng Jiayan Shi Yingguo Yang Si Xiao yongbo Yuan Junliang Yang Hunan Key Laboratory for Super-microstructure and Ultrafast Process School of PhysicsCentral South UniversityChangsha 410083China Hunan Key Laboratory of Nanophotonics and Devices School of PhysicsCentral South UniversityChangsha 410083China Textile and Fashion Collage Hunan Institute of EngineeringXiangtan 411101China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

Scalable deposition of high-efficiency perovskite solar cells(PSCs)is critical to accelerating their commercial ***,a significant number of defects are distributed at the buried interface of perovskite film fabricated by scalable deposition,exhibiting much negative influence on the efficiency and stability of ***,2-(N-morpholino)ethanesulfonic acid potassium salt(MESK)is incorporated as the bridging layer between the tin oxide(SnO_(2))electron transport layer(ETL)and the perovskite film deposited via scalable two-step doctor *** experiment and simulation results demonstrate that MESK can passivate the trap states of Sn suspension bonds,thereby enhancing the charge extraction and transport of the SnO_(2)***,the strong interaction with uncoordinated Pb ions can modulate the crystal growth and crystallographic orientation of perovskite film and passivate buried *** employing MESK interface bridging,PSCs fabricated via scalable doctor blading in ambient condition achieve a power conversion efficiency(PCE)of 24.67%,which is one of the highest PCEs for doctor-bladed PSCs,and PSC modules with an active area of 11.35 cm^(2)achieve a PCE of 19.45%.Furthermore,PSCs exhibit excellent long-term stability,and the unpackaged target device with a storage of 1680 h in ambient condition(25℃and humidity of 30%relative humidity(RH))can maintain more than 90%of the initial *** research provides a strategy for constructing a high-performance interface bridge between SnO_(2)ETL and perovskite film,and achieving efficient and stable large-area PSCs and modules fabricated via scalable doctor-blading process in ambient condition.

关键词： perovskite solar cells doctor blading buried interface defect passivation orientation regulation

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机器人生产线在船舶智能制造中的应用研究

船舶工程 2017年第10期39卷 95-99页

作者：李永博中船第九设计研究院工程有限公司上海200063

结合国内首个船舶智能制造试点示范项目,对机器人生产线如小组立机器人焊接生产线等的应用情况进行梳理分析,包括工艺流程及布置、生产模式对比改进、提质增效和人员减配等,为船舶智能制造发展建设提供参考。

关键词：船舶智能制造机器人生产线小组立机器人焊接生产线

经济学的可实验性及其实验教学设计——以资本市场实验为例

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实验技术与管理 2017年第7期34卷 158-161页

作者：李永波中国石油大学(华东)经济管理学院山东青岛266580

经济学已经日益发展成为了一门实验学科,在经济学课堂中引入实验教学有助于培养学生的创新能力。经济学实验进行科学设计,在内容设计上须包含环境、制度和行为结果3个要素,在设计步骤上应当包括确定实验目的和实验问题、设置实验环境和... 详细信息

经济学已经日益发展成为了一门实验学科,在经济学课堂中引入实验教学有助于培养学生的创新能力。经济学实验进行科学设计,在内容设计上须包含环境、制度和行为结果3个要素,在设计步骤上应当包括确定实验目的和实验问题、设置实验环境和实验规则、详尽的实验程序设计以及实验数据分析4个环节。论文进一步利用案例对实验教学设计进行了说明。

关键词：经济学实验实验教学设计资本市场实验

挤压对ZrB_2/6063Al复合材料组织及其摩擦磨损特性的影响

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稀有金属材料与工程 2017年第10期46卷 3017-3022页

作者：李惠焦雷梅运柱何忠秀李永博江苏科技大学江苏镇江212003 江苏大学江苏镇江212013

以6063Al-(K_2ZrF_6+KBF_4)为反应体系,原位反应制备了ZrB_2/6063Al铝基复合材料,采用挤压方法对复合材料进行塑性加工。研究了挤压前后复合材料的微观组织变化,以及挤压工艺对复合材料摩擦磨损性能的影响。结果表明:铸态原位内生制得... 详细信息

以6063Al-(K_2ZrF_6+KBF_4)为反应体系,原位反应制备了ZrB_2/6063Al铝基复合材料,采用挤压方法对复合材料进行塑性加工。研究了挤压前后复合材料的微观组织变化,以及挤压工艺对复合材料摩擦磨损性能的影响。结果表明:铸态原位内生制得的复合材料,基体晶粒大小为30~50μm,ZrB_2颗粒呈规则的多边形,团聚现象严重。经过挤压加工之后,复合材料晶粒细化,大小为7~14μm,增强颗粒呈有圆边的多边形,分布均匀,尺寸为1~3μm,团聚改善。由于挤压后增强颗粒分布更加均匀,颗粒更加圆钝,使得摩擦后磨痕表面更加平整,各部分凹凸差异减小。摩擦系数随着载荷的增大而减小,载荷为12 N时摩擦系数最小为0.29,相比于原始铸锭复合材料的最小摩擦系数减小了32.4%。挤压后复合材料的磨损体积和磨损宽度均减小,耐磨性也得到了很大的提高。复合材料的磨损机制是以磨粒磨损为主,轻微粘着磨损为辅。

关键词： ZrB2/6063Al复合材料挤压微观组织摩擦磨损性能

Organically-Structured Control of Large-Scale Systems with Expanded Construction Based on State Observer

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Organically-Structured Control of Large-Scale Systems with E...