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基于LoRa技术的ABB机器人遥操作联动系统的设计

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黑龙江科学 2024年第12期15卷 48-51页

作者：戴琨王震生唐山工业职业技术学院河北唐山063299 河北省高校动车组智能制造与运维应用技术研发中心河北唐山063299 唐山市工业机器人系统智能运维技术创新中心河北唐山063299

工业机器人传统编程与控制模式受通信网线距离的影响,不便对其进行远程操作,控制灵活性差。对工业机器人远程操作联动系统进行研究,设计并研发一种基于LoRa技术的ABB机器人遥操作联动系统,选择PC机作为上位机设计人机交互界面,通过RS232... 详细信息

工业机器人传统编程与控制模式受通信网线距离的影响,不便对其进行远程操作,控制灵活性差。对工业机器人远程操作联动系统进行研究,设计并研发一种基于LoRa技术的ABB机器人遥操作联动系统,选择PC机作为上位机设计人机交互界面,通过RS232、LoRa协议建立上位机与LoRa模块的通信,搭建LoRa模块与工业机器人的通信,完成工业机器人与远端工作站及数据中心的连接,实现对工业机器人的远程控制与管理。实验表明,该系统能够对ABB机器人进行远程控制与状态监控,替代人类在恶劣环境下对工业机器人进行控制管理,解放人力,提高生产效率。

关键词：遥操作 LoRa 工业机器人远程控制

Limited Memory BFGS Method for Least Squares Semidefinite Programming with Banded Structure

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Journal of Systems Science & Complexity 2022年第4期35卷 1500-1519页

作者： XUE Wenjuan SHEN Chungen YU zhensheng School of Mathematics and Physics Shanghai University of Electric PowerShanghai200090China University of Shanghai for Science and Technology Shanghai200093China

This work is intended to solve the least squares semidefinite program with a banded structure. A limited memory BFGS method is presented to solve this structured program of high *** the algorithm, the inverse power iteration and orthogonal iteration are employed to calculate partial eigenvectors instead of full decomposition of n × n matrices. One key feature of the algorithm is that it is proved to be globally convergent under inexact gradient information. Preliminary numerical results indicate that the proposed algorithm is comparable with the inexact smoothing Newton method on some large instances of the structured problem.

关键词： Banded structure inexact gradient least squares semidefinite program limited memory BFGS orthogonal iteration

《李学勤文集》:关于出版与考古学、历史学的内在联系

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出版发行研究 2024年第2期 1-1页

作者：郝振省中国编辑学会

首先祝贺江西教育出版社推出了这一套思想深邃、内容厚重的《李学勤文集》,约1000万字,30卷册,覆盖了学术领域的六个方面,不可谓不宏大;编纂历时八年,尤其在此期间,先生仙逝,新冠病毒肆虐,不可谓不艰辛、不持久;省委宣传部全程关注。

关键词：李学勤考古学历史学文集学术领域内在联系江西教育出版社六个方面

The contribution of distant hybridization with decaploid Agropyron elongatum to wheat improvement in China

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Journal of Genetics and Genomics 2008年第8期35卷 451-456页

作者： zhensheng Li Bin Li Yiping Tong State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Wheat is a staple food crop in the world as well as in China. Because of the progress of wheat breeding and other agricultural ＂sci-technologies, the wheat grain yield per unit area has increased more than five folds from 1952 to 2006 in China. The first part of this article briefly reviews the history of wheat breeding in China. Second, the establishment of ＂Triticum aestivum-Agropyron＂ distant hybridization system and its contribution to wheat production and breeding in China are summarized. Finally, the future challenges of wheat breeding are discussed, which include how to increase the utilization efficiencies of water, soil nutrient and light energy through breeding. As an example, our research progress on how to increase light use efficiency in wheat through breeding is introduced and discussed.

关键词： wheat improvement distant hybridization Agropyron elongatum light use efficiency

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旋转流体多边形自由表面形成机制研究

实验流体力学 2024年第2期38卷 78-87页

作者：李唯一王涛张先念李雪琴孙振生火箭军工程大学西安710025

针对流体在约束旋转中产生多边形涡流的现象,设计了旋转圆筒实验装置,对不同旋转频率、液面高度及圆筒半径下的旋转流体行为进行了研究。基于实验现象,提出了全局复合波理论模型,该模型的计算结果与实验现象一致。根据流动相似理论,利... 详细信息

针对流体在约束旋转中产生多边形涡流的现象,设计了旋转圆筒实验装置,对不同旋转频率、液面高度及圆筒半径下的旋转流体行为进行了研究。基于实验现象,提出了全局复合波理论模型,该模型的计算结果与实验现象一致。根据流动相似理论,利用量纲分析法对实验数据进行分析处理;借助黑体辐射模型给出了流体参数在一定范围下的经验公式,该公式在径长比小于4的情况下与实验数据符合程度较好。本文建立的全局复合波理论模型及相关研究结论可为多边形涡流形成机制与变化规律研究提供理论参考。

关键词：旋转流体多边形涡流量纲分析经验公式黑体辐射模型全局复合波理论模型

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氧化石墨烯界面调控纳滤膜制备及性能研究

环境科学与技术 2024年第8期47卷 17-25页

作者：丰桂珍方圳生胡小杰张火梅陈俊华东交通大学土木建筑学院江西南昌330013

为提高传统聚酰胺纳滤膜渗透性能和抗污染性能,文章以聚砜(PSF)超滤膜为基材,以哌嗪、均苯三甲酰氯为水相和有机相单体,引入氧化石墨烯(GO)作为亲水改性材料,通过界面聚合法制备氧化石墨烯复合纳滤膜(GO-PA-PSF膜),研究GO占比对膜表面... 详细信息

为提高传统聚酰胺纳滤膜渗透性能和抗污染性能,文章以聚砜(PSF)超滤膜为基材,以哌嗪、均苯三甲酰氯为水相和有机相单体,引入氧化石墨烯(GO)作为亲水改性材料,通过界面聚合法制备氧化石墨烯复合纳滤膜(GO-PA-PSF膜),研究GO占比对膜表面形貌、化学结构及分离性能的影响。结果表明,当GO质量分数为0.01%时,GO-PA-PSF膜表面开始出现褶皱,膜表面粗糙度、亲水性和负电性增强,其渗透通量为50.47 L/(m^(2)·h),对Na_(2)SO_(4)的截留率为98.14%,在30 h脱盐试验中保持良好的稳定性,对3种模型污染物的抗污染性能有所提升。

关键词：氧化石墨烯界面聚合聚酰胺纳滤膜抗污染性能

珠江口盆地番禺低隆起新生代断裂体系及油气成藏潜力

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海洋地质前沿 2024年第3期40卷 38-47页

作者：李振升蔡嵩靳瑶瑶许新明梁杰中海石油(中国)有限公司深圳分公司深圳518054 中海石油深海开发有限公司深圳518054

番禺低隆起的油气勘探潜力受新生代断裂体系控制,目前对其断裂特征和演化过程的研究较为匮乏。利用覆盖番禺低隆起的三维地震资料,对研究区的结构特征、断裂平面展布、断裂剖面变形样式等进行分析;定量计算了新生代以来各洼陷边界断裂... 详细信息

番禺低隆起的油气勘探潜力受新生代断裂体系控制,目前对其断裂特征和演化过程的研究较为匮乏。利用覆盖番禺低隆起的三维地震资料,对研究区的结构特征、断裂平面展布、断裂剖面变形样式等进行分析;定量计算了新生代以来各洼陷边界断裂的活动速率,划分了断裂活动期次;对研究区新生代演化过程进行了复原,分析了不同时期断裂发育的动力学成因。结果表明:番禺低隆起各洼陷均为“南断北超”结构,控洼断裂沿走向的不连续导致洼陷具有多个沉积中心;控洼断裂新生代活动可划分为初始裂陷期、加速裂陷期、裂后拗陷期、构造复活期和构造平静期;其中,文昌组沉积期和韩江组下段沉积期为断层活动的两大高峰期;番禺低隆起新生代断裂的发育受到基底先存断裂的严格控制,断裂走向自深到浅发生顺时针偏转,与南海区域应力场的偏转密切相关。裂陷期断裂活动强烈,使得番禺低隆起具备发育优质烃源岩的潜力。

关键词：番禺低隆起断裂特征活动期次构造演化沉降中心

Magic of hydrogen spillover: Understanding and application

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Green Energy & Environment 2022年第6期7卷 1161-1198页

作者： Haifang Shen Hao Li zhensheng Yang Chunli Li National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization Tianjin Key Laboratory of Chemical Process SafetySchool of Chemical Engineering and TechnologyHebei University of Technology8 Guangrong RoadTianjin300130China

The hydrogen spillover effect(HSPE)plays an important role in heterogeneous catalysis and hydrogen storage as an interfacial phenomenon,which facilitates the improvement of hydrogen storage properties of porous nanomaterials and indirectly or directly affects the reaction performance of multiphase catalytic *** setting-up of the word“hydrogen spillover”opened up a new area to gain insight into the dynamic behavior of migrating hydrogen atoms on a catalyst ***,a comprehensive understanding of the HSPE is still ***,the development of advanced characterization techniques provides increasingly valuable information to further our understanding of the *** on these considerations,in this review,we hope to provide some answers to the question“What is hydrogen spillover and how do we recognize it?”.To do this,we will rely on advanced characterization techniques as well as experimental and theoretical ***,we discuss in detail the influences of the HSPE on hydrogen storage performance and the important catalytic effects of the HSPE in *** effects will be reviewed by looking through the catalytic results obtained in many reactions in thermal catalysis,electrocatalysis,and ***,based on the application potential of hydrogen spillover,we present some preliminary research proposals and discuss the opportunities and challenges that remain to be faced in this research area.

关键词： Hydrogen spillover Characterization Hydrogen storage Catalysis Spillover mechanism

Testing for the parametric parts in a single-index varying-coefficient model

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Science China Mathematics 2012年第5期55卷 1017-1028页

作者： HUANG zhensheng ZHANG RiQuan School of Science Nanjing University of Science and TechnologyNanjing 210094China School of Mathematics Hefei University of TechnologyHefei 230009China Department of Statistics East China Normal UniversityShanghai 200241China Department of Mathematics Shanxi Datong UniversityDatong 037009China

Single-index varying-coefficient models (SIVCMs) are very useful in multivariate nonparametric ***,there has less attention focused on inferences of the *** the local linear method,we propose estimates of the unknowns in the *** this article,our main purpose is to examine whether the generalized likelihood ratio (GLR) tests are applicable to the testing problem for the index parameter in the *** the null hypothesis our proposed GLR statistic follows the chi-squared distribution asymptotically with scale constant and degree of freedom independent of the nuisance parameters or functions,which is called as Wilks' phenomenon (see Fan et al.,2001).A simulation study is conducted to illustrate the proposed methodology.

关键词： generalized likelihood ratio index parameter local smoothing method single-index models Wilks' type of phenomenon