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师德违规行为惩处的国际经验及启示

河北师范大学学报（教育科学版） 2019年第6期21卷 64-70页

作者：朱水萍尹建军南通大学教育科学学院江苏南通226019 美国杰克逊州立大学教育与人类发展学院密西西比杰克逊39217

师德违规惩处是师德问责的重要环节。国外师德违规行为类型多,惩处程序规范、严格。新时代我国师德建设整体上呈现出制度导向严厉、违规行为复杂、急需负面清单标尺等问题与特征,健全师德监督机制有必要研究现阶段师德新型问题,尽快建... 详细信息

师德违规惩处是师德问责的重要环节。国外师德违规行为类型多,惩处程序规范、严格。新时代我国师德建设整体上呈现出制度导向严厉、违规行为复杂、急需负面清单标尺等问题与特征,健全师德监督机制有必要研究现阶段师德新型问题,尽快建立独立的师德违规惩戒制度,加强师德警示教育。

关键词：师德违规惩处师德教育

A_2和B_3单体重氮偶合反应制备超支化偶氮聚合物

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高分子学报 2008年第2期18卷 183-187页

作者：和亚宁李煜璟殷建军王晓工清华大学化工系高分子研究所教育部先进材料重点实验室北京100084

利用A2/B3单体通过重氮偶合反应制备了超支化偶氮聚合物.利用核磁共振、红外光谱、紫外光谱和DSC热分析手段表征了聚合物的结构、光谱性能和玻璃化转变温度.合成的超支化偶氮聚合物具有很好的光响应性能,用488nm Ar+激光对超支化偶氮聚... 详细信息

利用A2/B3单体通过重氮偶合反应制备了超支化偶氮聚合物.利用核磁共振、红外光谱、紫外光谱和DSC热分析手段表征了聚合物的结构、光谱性能和玻璃化转变温度.合成的超支化偶氮聚合物具有很好的光响应性能,用488nm Ar+激光对超支化偶氮聚合物薄膜进行光加工,得到了规则的表面起伏光栅.

关键词： A2+B3 重氮偶合反应超支化偶氮聚合物

Engineering hierarchical quaternary superstructure of an integrated MOF-derived electrode for boosting urea electrooxidation assisted water electrolysis

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Green Energy & Environment 2024年第4期9卷 695-701页

作者： jianjun Tian Changsheng Cao yingchun He Muhammad Imran Khan Xin-Tao Wu Qi-Long Zhu State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences(CAS)Fuzhou350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou350108China University of Chinese Academy of Sciences Beijing100049China Research Institute of Sciences and Engineering(RISE) University of SharjahSharjah27272United Arab Emirates

Controllable design of the catalytic electrodes with hierarchical superstructures is expected to improve their electrochemical ***,a self-supported integrated electrode(NiCo-ZLDH/NF)with a unique hierarchical quaternary superstructure was fabricated through a self-sacrificing template strategy from the metal–organic framework(Co-ZIF-67)nanoplate arrays,which features an intriguing well-defined hierarchy when taking the unit cells of the NiCo-based layered double hydroxide(NiCo-LDH)as the primary structure,the ultrathin LDH nanoneedles as the secondary structure,the mesoscale hollow plates of the LDH nanoneedle arrays as the tertiary structure,and the macroscale three-dimensional frames of the plate arrays as the quaternary ***,the distinctive structure of NiCo-ZLDH/NF can not only accelerate both mass and charge transfer,but also expose plentiful accessible active sites with high intrinsic activity,endowing it with an excellent electrochemical performance for urea oxidation reaction(UOR).Specially,it only required the low potentials of 1.335,1.368 and 1.388 V to deliver the current densities of 10,100 and 200 mA cm^(-2),respectively,much superior to those for typical *** NiCo-ZLDH/NF as the bifunctional electrode for both anodic UOR and cathodic HER,an energy-saving electrolysis system was further explored which can greatly reduce the needed voltage of 213 mV to deliver the current density of 100 mA cm^(-2),as compared to the conventional water electrolysis system composed of *** work manifests that it is prospective to explore the hierarchically nanostructured electrodes and the innovative electrolytic technologies for high-efficiency electrocatalysis.

关键词： Hierarchical superstructures Metal–organic frameworks Layered double hydroxides Urea oxidation reaction Hydrogen evolution reaction

Multiparameter collaborative optimization of the vibrating screen based on the behavior of oil sunflower seed penetrating screen holes

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 49-58页

作者： Wenbo Wei Jianchang Li jianjun Hao Maohua Xiao Huiju Zhang College of Mechanical and Electrical Engineering Hebei Agricultural UniversityBaoding 071001HebeiChina College of Engineering Nanjing Agricultural UniversityNanjing 210032China The Higher Educational Key Laboratory for Flexible Manufacturing Equipment Integration of Fujian Province Xiamen Institute of TechnologyXiamen 361000FujianChina

The behavior of oil sunflower seeds penetrating screen holes is an important factor that affects the screening performance of oil sunflower *** this study,a double-deck reverse-motion vibrating screening device for oil sunflower seed screening was *** force condition and motion law of the oil sunflower seeds on the screen surface were *** study compared the effect of particle filling amount of discrete element model of oil sunflower seeds on the simulation *** screening process was numerically simulated using the coupled Discrete Element Method and Multibody Dynamics(DEM-MBD)technique with the screening percentage of oil sunflower seeds as the *** influence of the operating parameters of the vibrating screen on the screening effect was analyzed using a multiparameter collaborative optimization *** results of this study can provide a reference for the numerical simulation of crop screening behavior and the development of screening devices.

关键词： oil sunflower seeds screening analysis DEM-MBD discrete element method response surface analysis

Desired Dynamic Equation for Primary Frequency Modulation Control of Gas Turbines

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Energy Engineering 2024年第5期121卷 1347-1361页

作者： Aimin Gao Xiaobo Cui Guoqiang Yu jianjun Shu Tianhai Zhang Thermal Power Center Jiangsu Frontier Electric Technology Co.Ltd.Nanjing211102China School of Energy and Power Engineering Nanjing Institute of TechnologyNanjing211167China

Gas turbines play core roles in clean energy supply and the construction of comprehensive energy *** control performance of primary frequency modulation of gas turbines has a great impact on the frequency control of the power ***,there are some control difficulties in the primary frequency modulation control of gas turbines,such as the coupling effect of the fuel control loop and speed control loop,slow tracking speed,and so *** relieve the abovementioned difficulties,a control strategy based on the desired dynamic equation proportional integral(DDE-PI)is proposed in this *** on the parameter stability region,a parameter tuning procedure is *** is carried out to address the ease of use and simplicity of the proposed tuning ***,DDE-PI is applied to the primary frequency modulation system of an MS6001B heavy-duty gas *** simulation results indicate that the gas turbine with the proposed strategy can obtain the best control performance with a strong ability to deal with system *** proposed method shows good engineering application potential.

关键词： Gas turbine primary frequency modulation(PFM) desired dynamic equation(DDE) proportion-integral(PI)

基于Micro-CT图像处理的稻谷内部损伤定量表征与三维重构

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农业工程学报 2017年第17期33卷 144-151页

作者：陈树人徐李尹建军汤明明江苏大学现代农业装备与技术省部共建教育部重点实验室镇江212013

在水稻脱粒、储运、加工过程中,外界机械作用力是造成稻谷损伤破损的主要方式,造成的内部裂纹肉眼无法观察但影响稻谷的存储、加工以及种子的发芽率等。该文利用质构仪对稻谷进行挤压力学特性试验,分析稻谷损伤破碎过程;对受不同载荷的... 详细信息

在水稻脱粒、储运、加工过程中,外界机械作用力是造成稻谷损伤破损的主要方式,造成的内部裂纹肉眼无法观察但影响稻谷的存储、加工以及种子的发芽率等。该文利用质构仪对稻谷进行挤压力学特性试验,分析稻谷损伤破碎过程;对受不同载荷的稻谷进行CT扫描试验,结合数字图像处理方法对稻谷进行损伤表征分析与三维重构,旨在提出一种新的稻谷内部损伤定量评价方法。结果表明:伪彩色图像处理可以提高CT图像的视觉分辨率;灰度值以及灰度直方图分析可以识别稻谷的胚、胚乳以及裂纹大小,并定量分析;对分割后的二值图像进行像素点统计分析得到80,100,120,140,160 N载荷下的损伤度分别为0,0.26%,0.39%,0.93%,1.79%;重构的三维模型可以看出裂纹一般沿着短轴方向扩展,随着载荷增大,原有裂纹逐渐变宽,并产生新的沿着长短轴的混合裂纹,直到糙米断裂。该研究可为谷物内部损伤定量表征分析提供新思路。

关键词： CT 稻谷三维量化挤压特性图像处理三维重建

Review of the Tuned Mass Damper Inerter(TMDI)in Energy Harvesting and Vibration Control:Designs,Analysis and Applications

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Computer Modeling in Engineering & Sciences 2024年第6期139卷 2361-2398页

作者： Xiaofang Kang Qiwen Huang Zongqin Wu jianjun Tang Xueqin Jiang Shancheng Lei School of Civil Engineering Anhui Jianzhu UniversityHefei230601China Key Laboratory of Intelligent Underground Detection Technology Anhui Jianzhu UniversityHefei230601China Chengnan College Changsha University of Science and TechnologyChangsha410015China

Tuned mass damper inerter(TMDI)is a device that couples traditional tuned mass dampers(TMD)with an inertial *** inertial device produces resistance proportional to the relative acceleration at its two ends through its“inertial”*** to its unique mechanical properties,TMDI has received widespread attention and application in the past twenty *** different configurations are required in different practical situations,TMDI is still active in the research on vibration control and energy harvesting in *** paper provides a comprehensive review of the research status of *** work first examines the generation and important vibration control characteristics of ***,the energy harvesting performance of electromagnetic tuned mass damper inerter(EM-TMDI)is *** work emphasizes the formation of a passive dynamic vibration absorber by coupling traditional TMD with inertial *** paper also summarizes the design and implementation of optimal vibration control and energy harvesting for ***,this paper details the applications of TMDI in the fields of bridges and building ***,this paper summarizes the necessity of research on tuned mass-damper-inertia,the challenges faced currently,and future research directions,such as control of parameters in electromagnetic energy harvesting TMDI systems and low-cost TMDI.

关键词： TMDI EM-TMDI energy harvesting vibration control inertial device

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打结器咬绳机构线接触凸轮设计与载荷分析

农业机械学报 2016年第7期47卷 224-231页

作者：尹建军陈亚明张万庆江苏大学现代农业装备与技术教育部重点实验室镇江212013

针对打结器咬绳机构钩钳受载大、滚子磨损严重的问题,通过对咬绳机构的运动学分析建立了圆柱凸轮轮廓曲面的计算模型,使滚子与凸轮保持线接触的同时钩钳以正弦加速度规律张合。对咬绳机构进行力学分析并结合压簧压缩量和捆绳拉力测试,... 详细信息

针对打结器咬绳机构钩钳受载大、滚子磨损严重的问题,通过对咬绳机构的运动学分析建立了圆柱凸轮轮廓曲面的计算模型,使滚子与凸轮保持线接触的同时钩钳以正弦加速度规律张合。对咬绳机构进行力学分析并结合压簧压缩量和捆绳拉力测试,解析求解钩钳在咬合位置的静力学模型,得出钩钳咬合力的最佳变化范围为300.64～329.89 N。解析求解钳咬机构的动力学模型得出,当钩钳咬合力处于最佳变化范围时,圆柱凸轮的接触力介于240～330 N之间,其峰值可以用于检验滚子的接触疲劳强度,指导钩钳和滚子的材料选择。打结器样机捆扎5 000捆稻麦秸秆的田间试验发现,按预设的压簧压缩量7.5 mm和捆绳初始拉力35 N,钩钳尾部的滚子没有明显磨损,表明钩钳的咬合力控制合适,线接触凸轮改善了滚子的接触受载情况,达到了抗冲击和耐磨的设计要求。

关键词：打捆机打结器圆柱凸轮机构设计载荷分析

Research on Scheduling Strategy of Flexible Interconnection Distribution Network Considering Distributed Photovoltaic and Hydrogen Energy Storage

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Energy Engineering 2024年第5期121卷 1263-1289页

作者： Yang Li jianjun Zhao Xiaolong Yang He Wang Yuyan Wang College of Electrical Engineering Northeast Electric Power UniversityJilin132011China Smart Distribution Network Center State Grid Jibei Electric Power Co.Ltd.Qinhuangdao066000China

Distributed photovoltaic(PV)is one of the important power sources for building a new power system with new energy as the main *** rapid development of distributed PV has brought new challenges to the operation of distribution *** order to improve the absorption ability of large-scale distributed PV access to the distribution network,the AC/DC hybrid distribution network is constructed based on flexible interconnection technology,and a coordinated scheduling strategy model of hydrogen energy storage(HS)and distributed PV is ***,the mathematical model of distributed PV and HS system is established,and a comprehensive energy storage system combining seasonal hydrogen energy storage(SHS)and battery(BT)is ***,a flexible interconnected distribution network scheduling optimization model is established to minimize the total active power loss,voltage deviation and system operating ***,simulation analysis is carried out on the improved IEEE33 node,the NSGA-II algorithm is used to solve specific examples,and the optimal scheduling results of the comprehensive economy and power quality of the distribution network are *** with the method that does not consider HS and flexible interconnection technology,the network loss and voltage deviation of this method are lower,and the total system cost can be reduced by 3.55%,which verifies the effectiveness of the proposed method.

关键词： Seasonal hydrogen storage flexible interconnection AC/DC distribution network photovoltaic absorption scheduling strategy