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中国冶金教育 2020年第6期25卷 77-79页

作者：王红梅邓红星马晓春马振江东北林业大学交通学院黑龙江哈尔滨150040

根据汽车构造课程特点,针对实践教学过程中存在的问题,提出了从实践教学方法改革、实习内容优化、实践教学网络平台建设、实践教学质量控制等方面进行实践教学改革的新思路,强调实践教学质量的提升与管控,探索了提高汽车构造课程实践教... 详细信息

根据汽车构造课程特点,针对实践教学过程中存在的问题,提出了从实践教学方法改革、实习内容优化、实践教学网络平台建设、实践教学质量控制等方面进行实践教学改革的新思路,强调实践教学质量的提升与管控,探索了提高汽车构造课程实践教学水平的新模式。

关键词：汽车构造实践教学教学改革

Virtual sensing method for monitoring vibration of continuously variable configuration structures using long short-term memory networks

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Chinese Journal of Aeronautics 2020年第1期33卷 244-254页

作者： zhenjiang YUE Li LIU Teng LONG Yuanchen ma School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Key Laboratory of Dynamics and Control of Flight Vehicle Ministry of EducationBeijing 100081China

Vibration monitoring by virtual sensing methods has been well developed for linear timeinvariant structures with limited ***,few methods are proposed for Time-Varying(TV)structures which are inevitable in aerospace *** core of vibration monitoring for TV structures is to describe the TV structural dynamic characteristics with accuracy and *** paper propose a new method using the Long Short-Term Memory(LSTM)networks for Continuously Variable Configuration Structures(CVCSs),which is an important subclass of TV *** configuration parameters are used to represent the time-varying dynamic characteristics by the‘‘freezing"*** relationship between TV dynamic characteristics and vibration responses is established by LSTM,and can be generalized to estimate the responses with unknown TV processes benefiting from the time translation invariance of LSTM.A numerical example and a liquid-filled pipe experiment are used to test the performance of the proposed *** results demonstrate that the proposed method can accurately estimate the unmeasured responses for CVCSs to reveal the actual characteristics in time-domain and ***,the average one-step estimation time of responses is less than the sampling ***,the proposed method is promising to on-line estimate the important responses of TV structures.

关键词： Data-based method Recurrent neural networks Time-varying structure Vibration monitoring Virtual sensing

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改进的车牌校正与识别算法

福建电脑 2024年第10期40卷 7-11页

作者：马嘉怡谭振江吉林师范大学数学与计算机学院吉林四平136000

为解决车牌存在图像背景噪声较大和车牌倾斜校正精度的问题,本文提出基于OpenCV的车牌校正与识别算法。基于形态学运算,对输入的图像进行车牌定位,并通过霍夫变换和透视变换进行倾斜校正,然后进行车牌字符分割,采取模板匹配技术对分割... 详细信息

为解决车牌存在图像背景噪声较大和车牌倾斜校正精度的问题,本文提出基于OpenCV的车牌校正与识别算法。基于形态学运算,对输入的图像进行车牌定位,并通过霍夫变换和透视变换进行倾斜校正,然后进行车牌字符分割,采取模板匹配技术对分割后的字符逐一进行比对识别,输出识别得到的车牌信息。实践结果显示了本文算法的系统性和实用性。

关键词：车牌识别车牌倾斜校正形态学运算

BnaWRKY75 positively regulates the resistance against Sclerotinia sclerotiorum in ornamental Brassica napus

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Horticultural Plant Journal 2024年第3期10卷 784-796页

作者： Kexin Yu Yijie Zhang Xiaoyuan Fei Luyue ma Rehman Sarwar Xiaoli Tan Zheng Wang School of Life Sciences Jiangsu UniversityZhenjiangJiangsu 212013China School of Food and Biological Engineering Jiangsu University ZhenjiangJiangsu 212013China Key Laboratory for Theory and Technology of Intelligent Agricultural machinery and Equipment Jiangsu UniversityZhenjiangJiangsu 212013China

With the development of tourism at home and abroad,Rapeseed(Brassica napus)has become an important ornamental ***,its ornamental value at the inflorescence stage is greatly reduced by Sclerotinia *** of important genes in the defense responses is critical for molecular breeding,which is an important strategy for controlling the *** this study,we isolated a *** WRKY transcription factor gene,***75 was found to encode a nucleus-localized protein and exhibited relatively high expression in the *** thaliana transgenic plants expressing BnaWRKY75 showed enhanced resistance to ***,and both ProBnaWRKY75:GUS and gene expression analyses showed that BnaWRKY75 was highly responsive to *** infection,indicating the involvement of BnaWRKY75 in response to this ***,overexpression(OE)of BnaWRKY75 in *** significantly enhanced the resistance to ***,whereas the resistance was reduced in RNAi transgenic *** ***,the BnaWRKY75-OE *** plants exhibited constitutive activation of salicylic acid-,jasmonic acid-,and ethylene-mediated defense responses and the inhibition of both H_(2)O_(2)and O_(2)·^(-)accumulation in response to this *** contrast,BnaWRKY75-RNAi plants showed a reverse pattern,suggesting that BnaWRKY75 is involved in hormonal signaling pathways and in the control of reactive oxygen species *** conclusion,these data indicate that BnaWRKY75,a regulator of multiple defense responses,positively regulates resistance against ***,which may guide the improvement of resistance in rapeseed.

关键词： Brassica napus BnaWRKY75 Defense response Sclerotinia sclerotiorum

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车辆动态称重系统误差产生机理

森林工程 2007年第5期23卷 22-24页

作者：张文会韩冰源马振江东北林业大学

车辆动态称重系统广泛应用于治理超载超限运输,其称量精度与车辆通过计量平台时的运动状态有一定的关系。首先对运行车辆进行运动学分析,找出影响动态称重系统称量精度的主要运动形式,并以此为依据,得出车辆轴载称量原理,最后分析了车... 详细信息

车辆动态称重系统广泛应用于治理超载超限运输,其称量精度与车辆通过计量平台时的运动状态有一定的关系。首先对运行车辆进行运动学分析,找出影响动态称重系统称量精度的主要运动形式,并以此为依据,得出车辆轴载称量原理,最后分析了车辆通过计量平台时的振动来源,以揭示称重系统误差产生机理。

关键词：动态称重系统运动学轴载

工程教育专业认证背景下专业课程群建设研究与实践

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黑龙江教育（高教研究与评估） 2021年第10期 3-5页

作者：张文会阎春利马振江东北林业大学交通学院黑龙江哈尔滨150040 东北林业大学黑龙江哈尔滨150040

毕业要求指标点需要多门课程来支撑,课程集群的教学内容需要深度梳理,教学目标也应符合逻辑。根据反向设计、正向实施的教学设计方法,文章首先分析培养目标与毕业要求之间的关系;基于分解后的专业毕业要求指标点,分析课程群组与指标点... 详细信息

毕业要求指标点需要多门课程来支撑,课程集群的教学内容需要深度梳理,教学目标也应符合逻辑。根据反向设计、正向实施的教学设计方法,文章首先分析培养目标与毕业要求之间的关系;基于分解后的专业毕业要求指标点,分析课程群组与指标点之间的支撑关系。然后以学生为中心,提出课程群建设要遵循支撑同一指标点、课程教学目标一体化和教学内容有机联系的原则;提出以毕业要求达成为核心,以核心能力的培养为最终目标,以课程教学活动为落脚点的课程群整合优化方案。最后,以交通运输专业为例,开展了课程群建设实践。研究结果为工程教育专业认证背景下的课程建设提供一定的参考,对成果导向型教育理念的实施具有一定的借鉴意义。

关键词：工程教育认证毕业要求指标点交通运输专业课程群建设

畜禽车厢体内温度和流场数值CFD模拟及验证

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中国农机化学报 2024年第5期45卷 85-90,97页

作者：苗永存马嘉楠蒋春玲王镇江傅爱军广西科技大学机械与汽车工程学院广西柳州545000 中国重汽集团柳州运力专用汽车有限公司广西柳州545000

为研究畜禽运输车厢体内环境的分布情况以及对温度场进行评估,利用计算流体力学(CFD)的方法,模拟出在空载及满载条件下内气流流场和温度场的分布情况,同时根据空载模拟结果提出优化方案并模拟。测量与分析厢体内关键位置的温度和风速,... 详细信息

为研究畜禽运输车厢体内环境的分布情况以及对温度场进行评估,利用计算流体力学(CFD)的方法,模拟出在空载及满载条件下内气流流场和温度场的分布情况,同时根据空载模拟结果提出优化方案并模拟。测量与分析厢体内关键位置的温度和风速,并与模拟值比较。结果表明:模拟空载时模拟值与测量值最大绝对误差1.7℃,模拟得到厢体的温度分布变化情况和测量值所得结果一致,风速值相对误差范围在3%以下的有22个点。优化后厢体内温度均匀度改善明显,温度变化幅度小;满载时,温度分布与空载相似,但整体温度有些许上升。验证CFD模型的正确性,为优化提供可靠基础。

关键词：畜禽运输车计算流体力学温度场气流流场

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表面肌电关节连续运动估计的研究进展

计算机工程与应用 2024年第14期60卷 26-36页

作者：马一凡魏德健冯妍妍于丰帆李振江山东中医药大学智能与信息工程学院济南250355

表面肌电信号(surface electromyography, sEMG)是一种非侵入式的生物电信号,用于捕捉运动过程中肌肉活动的变化。因其与运动密切相关,所以广泛应用于智能辅助康复设备的研发过程中,为康复者提供支持和帮助。康复训练涉及到复杂的立体运... 详细信息

表面肌电信号(surface electromyography, sEMG)是一种非侵入式的生物电信号,用于捕捉运动过程中肌肉活动的变化。因其与运动密切相关,所以广泛应用于智能辅助康复设备的研发过程中,为康复者提供支持和帮助。康复训练涉及到复杂的立体运动,而基于sEMG的关节连续运动估计是一种通过分析运动期间的sEMG来估计关节角度或力矩的方法,它能够有效缓解康复机器与人体之间的适应性不足的问题,并提供更安全的辅助,从而显著改善康复效果。介绍了关节连续运动估计的现状,然后根据不同的研究方法将现有的sEMG关节连续运动估计模型分为基于生物力学的肌肉骨骼模型和基于机器学习的回归模型,分别对相关模型进行总结分析;分析了当前所面临的挑战,并展望了未来的研究趋势。

关键词：表面肌电信号(sEMG) 关节连续运动肌肉骨骼模型回归模型

Coming of age:the formation and function of age-associated B cells

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Cellular & Molecular Immunology 2024年第4期21卷 311-312页

作者： Ke Rui Nan Che Kongyang ma Hejian Zou Fan Xiao Liwei Lu Department of Laboratory Medicine Institute of Medical Immunology of Jiangsu UniversityAffiliated Hospital of Jiangsu UniversityZhenjiangChina Department of Rheumatology and Immunology Nanjing First HospitalNanjing Medical UniversityJiangsuChina Centre for Infection and Immunity Studies School of MedicineThe Sun Yat-sen UniversityShenzhen518107GuangdongChina Department of Rheumatology Huashan HospitalFudan UniversityShanghaiChina Department of Pathology and Shenzhen Institute of Research and Innovation HKU Shenzhen HospitalThe University of Hong KongHong KongChina Centre for Oncology and Immunology Hong Kong Science ParkHong KongChina

B cells are generated in the bone marrow during ontogeny and migrate to peripheral lymphoid organs,where they encounter antigens to elicit humoral *** the past decade,many novel B-cell subsets with distinct phenotypes and functions have been identified,and among these subsets,age-associated B cells(ABCs)were first characterized as a B-cell subset that accumulates with age[1].

关键词： organs lymphoid migrate

Abscisic acid and ethephon regulation of cellulase in the endosperm cap and radicle during lettuce seed germination

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Journal of Integrative Plant Biology 2016年第10期58卷 859-869页

作者： Bingxian Chen Jun ma zhenjiang Xu Xiaofeng Wang Seed Science and Technology Lab College of Life SciencesSouth China Agricultural University Agro-biological Gene Research Center Guangdong Academy of Agricultural Sciences

The purpose of this study was to investigate the role of cellulase in endosperm cap weakening and radicle elongation during lettuce （Lactuco sotiva L.） seed germination. The application of abscisic acid （ABA） or ethephon inhibits or promotes germination, respectively, by affecting endosperm cap weakening and radicle elongation. Cellulase activities, and related protein and transcript abundances of two lettuce cellulase genes, LsCEL1 and LsCEL2, increase in the endosperm cap and radicle prior to radicle protrusion following imbibition in water, ABA or ethephon reduce or elevate, respectively, cellulase activity, and related protein and transcript abundan- ces in the endosperm cap. Taken together, these observations suggest that celiulase plays a role in endosperm cap weakening and radicle elongation during lettuce seed germination, and that the regulation of cellulase in the endosperm cap by ABA and ethephon play a role in endosperm cap weakening. However, the influence of ABA and ethephon on radicle elongation may not be through their effects on cellulase.

关键词： Abscisic acid cellulase ethephon endosperm cap weakening lettuce seed germination