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黄埔军校的红色文化传播与精神铸造

岭南文史 2024年第1期 5-13页

作者：张承良高裕涵中共广东省委党校

伟大事业孕育伟大精神,伟大精神引领伟大事业。黄埔军校红色文化培养了一大批热血青年,它所铸造的“黄埔精神”与伟大的建党精神一脉相承,成为中国共产党人推动中华民族自立自强的重要基本实践经验之一。

关键词：黄埔军校红色文化精神铸造

Prediction of Pitting Corrosion Mass Loss for 304 Stainless Steel by Image Processing and BP Neural Network

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Journal of Iron and Steel Research International 2005年第6期12卷 59-62页

作者： zhang Wei liang cheng-hao State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116012 China

Image processing technique was employed to analyze pitting corrosion morphologies of 304 stainless steel exposed to FeCl3 environments. BP neural network models were developed for the prediction of pitting corrosion mass loss using the obtained data of the total and the average pit areas which were extracted from pitting binary image. The results showed that the predicted results obtained by the 2-5-1 type BP neural network model are in good agreement with the experimental data of pitting corrosion mass loss. The maximum relative error of prediction is 6.78%.

关键词： BP neural network image processing pitting corrosion mass loss prediction

基于斯塔克尔伯格博弈的绿色供应链诚信策略演化博弈及仿真分析

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南昌航空大学学报（社会科学版） 2024年第2期26卷 85-95页

作者：沈俊辉张良成南昌航空大学经济管理学院南昌330063 南昌航空大学马克思主义学院南昌330063 南京航空航天大学马克思主义学院南京213300

加快企业绿色转型对我国实现双碳目标具有重要意义。为解决绿色供应链发展过程中出现的非法排放、虚假宣传、监管不力等问题,运用Stackelberg博弈、演化博弈和系统动力学模型,探寻绿色供应链参与主体的决策演化和系统稳定策略,以及各要... 详细信息

加快企业绿色转型对我国实现双碳目标具有重要意义。为解决绿色供应链发展过程中出现的非法排放、虚假宣传、监管不力等问题,运用Stackelberg博弈、演化博弈和系统动力学模型,探寻绿色供应链参与主体的决策演化和系统稳定策略,以及各要素对绿色供应链系统演化的影响。研究表明:价格敏感系数与绿色营销敏感系数对主体决策演化的影响取决于两者之间的比例;制造商的诚实决策选择与其偷排程度有关,偷排程度较低的制造商倾向于诚实行为;高监督成本和高物质奖励都会导致政府监督的积极性降低;采用动态惩罚措施能够有效抑制系统的波动状态,并让制造商诚实概率和政府监督概率维持在合理水平。

关键词：绿色供应链碳排放企业诚信动态惩罚演化博弈

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胆汁性肾病的基础与临床研究进展

临床肾脏病杂志 2024年第6期24卷 513-516页

作者：尚天则张程亮刘东华中科技大学同济医学院附属同济医院药学部武汉430030

胆汁性肾病(cholemic nephropathy,CN)是在晚期慢性肝病并发重度黄疸患者中出现的一种以肾功能障碍为主要表现的疾病。目前,CN缺乏有效的无创诊断方法,肾穿刺活检是该病临床诊断的金标准。此外,该病常与肝肾综合征相混淆,漏诊或误诊易... 详细信息

胆汁性肾病(cholemic nephropathy,CN)是在晚期慢性肝病并发重度黄疸患者中出现的一种以肾功能障碍为主要表现的疾病。目前,CN缺乏有效的无创诊断方法,肾穿刺活检是该病临床诊断的金标准。此外,该病常与肝肾综合征相混淆,漏诊或误诊易贻误治疗使得患者预后较差。CN的临床治疗原则是降低患者高胆红素水平以缓解肾损伤,若药物效果不佳也可采用人工肝系统改善患者肾功能。CN的病理机制尚未完全阐明,近年来的研究表明该病的发病机制包括肾脏转运体异常、胆汁酸损伤以及炎症反应等。基于此,本文主要针对国内外关于CN的研究进展,对其临床诊断、发病机制及治疗现状等方面进行归纳总结,以期为CN的深入研究和临床干预提供一定的理论基础。

关键词：胆汁性肾病胆汁铸型晚期肝病黄疸急性肾功能障碍

Advancing electrochemical drilling process via coupling of flow field and electric field in pulsating state generated by a novel tube tool

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Chinese Journal of Aeronautics 2024年第4期37卷 542-555页

作者： liang cheng Xiaolei CHEN Zhisen YE Yongjun zhang State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006China Guangdong Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment Guangdong University of TechnologyGuangzhou 510006China Guangzhou Key Laboratory of Nontraditional Machining and Equipment Guangdong University of TechnologyGuangzhou 510006China

This paper introduces an improvement to electrochemical drilling process by coupling flow field and electric field in pulsating state. A novel tube with half-wedged shape at the end(HW-tube) is prepared, with both sidewall and wedged part of the HW-tube insulated. Only the flat part is utilized to provide electric field for electrochemical drilling. By rotating the HW-tube, both flow field and electric field in pulsating state are generated, alternating in different positions within the inter-electrode gap(IEG). The pulsating flow field enhances the mass transfer process, while pulsating electric field disperses material dissolution process and distribution of electrolytic byproducts. Both pulsating fields are coupled at the same frequency, further enhancing the electrochemical drilling process. Simulation results indicate that both flow field and electric field in pulsating state are generated. Compared to the traditional tube, the HW-tube significantly reduces the number of residual particles in IEG, and this number is further reduced by increasing the rotation speed. Experimental results reveal that the surface quality and dimensional uniformity of small hole are improved with HW-tube. With feed rate of 2.22 mm/min, a small hole with diameter of 1.52± 0.017 mm is drilled, resulting in a surface roughness of 0.331 μm.

关键词： Small holes Electrochemical drilling Tools Pulsating flow field Pulsating electric field

Machining dynamics and chatters in micro-milling:A critical review on the state-of-the-art and future perspectives

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Chinese Journal of Aeronautics 2024年第7期37卷 59-80页

作者： Qingshun BAI Peng WANG Kai cheng liang ZHAO Yabo zhang School of Mechanical and Electrical Engineering Harbin Institute of TechnologyHarbin 150001China Department of Mechanical and Aerospace Engineering Brunel University LondonUxbridge UB83PHUK

Micro-milling technology is widely applied in micro manufacturing,particularly for the fabrication of miniature and micro ***,the chatters and machining dynamics related issues in micro-milling are often the main challenges restricting its machining quality and *** research works have rendered that the machining dynamics and chatters in micro-milling are more complex compared with the conventional macro-milling process,likely because of the size effect and rigidity of the micro-milling system including the tooling,workpiece,process variables,materials involved,and the high-speed milling machines,and further their collective dynamic ***,in this paper,the state of the art focusing on micro-milling chatters and dynamics related issues over the past years are comprehensively and critically reviewed to provide some insights for potential researchers and ***,typical applications and the problems caused by the machining dynamics and chatters in micro-milling have been put forward in this ***,the research on the underlying micro-cutting mechanics and dynamics,stability analysis,chatters detection,and chatter suppression are summarized ***,the underlying scientific and technological challenges are discussed particularly against typical precision engineering ***,the possible future directions and trends in research and development of micro-milling have been discussed.

关键词： Micro-milling Machining dynamics Micro-cutting mechanics Stability lobe diagram(SLD) Chatters suppression Digital twin

Statistical QoS Provisioning Architecture for 6G Satellite-Terrestrial Integrated Networks

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Journal of Communications and Information Networks 2024年第1期9卷 34-42页

作者： Jingqing Wang Wenchi cheng Wei zhang Hui liang School of Telecommunications Engineering Xidian UniversityXi’an 710071China School of Electrical Engineering and Telecommunications the University of New South WalesSydneyAustralia School of Electrical Engineering and Intelligentization Dongguan University of TechnologyDongguan 523808China Peng cheng Laboratory Shenzhen 518055China.

The emergence of massive ultra-reliable and low latency communications (mURLLC) as a category of age/time/reliability-sensitive service over 6G wireless networks has received considerable research attention, which has presented unprecedented challenges. As one of the key enablers for 6G,satellite-terrestrial integrated networks (STIN) have been developed to offer more expansive connectivity and comprehensive 3D coverage in space-aerial-terrestrial domains for supporting 6G mission-critical mURLLC applications while fulfilling diverse and rigorous quality of service (QoS) requirements. In the context of these mURLLC-driven satellite services, data freshness assumes paramount importance, as outdated data may engender unpredictable or catastrophic *** effectively measure data freshness in satellite-terrestrial integrated communications,age of information(AoI)has recently surfaced as a new dimension of QoS metric to support time-sensitive applications. It is crucial to design new analytical models that ensure stringent and diverse QoS metrics bounded by different key parameters,including AoI,delay,and reliability,over 6G satellite-terrestrial integrated networks. However,due to the complicated and dynamic nature of satellite-terrestrial integrated network environments, the research on efficiently defining new statistical QoS provisioning schemes while taking into account varying degrees of freedom has still been in their infancy. To remedy these deficiencies, in this paper we develop statistical QoS provisioning schemes over 6G satellite-terrestrial integrated networks in the finite blocklength regime. Particularly, we firstly introduce and review key technologies for supporting ***,we formulate a number of novel fundamental statistical-QoS metrics in the finite blocklength ***,we conduct a set of simulations to validate and evaluate our developed statistical QoS provisioning schemes over satellite-terrestrial integrated networks.

关键词： statistical QoS provisioning mURLLC peak AoI satellite-terrestrial integrated networks QoS exponents hybrid automatic repeat request finite blocklength coding

Mechanism of capture section affecting an intake for atmosphere-breathing electric propulsion

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Chinese Journal of Aeronautics 2024年第1期37卷 51-63页

作者： Siyuan zhang Jinyuan YANG cheng LI Haolin LI Liwei zhang liang DING Anbang SUN State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi’an Jiaotong UniversityXi’an 710049China China Academy of Aerospace Science and Innovation Beijing 100049China

Atmosphere-Breathing Electric Propulsion(ABEP)can compensate for lost momentum of spacecraft operating in Very Low Earth Orbit(VLEO)which has been widely concerned due to its excellent commercial *** is a key technology to improve the capture efficiency of intakes,which collect and compress the atmosphere for *** this paper,the mechanism of the capture section affecting capture efficiency is investigated by Test Particle Monte Carlo(TPMC)simulations with 3D intake *** inner surface smoothness and average collision number are determined to be key factors affecting capture efficiency,and a negative effect growth model is accordingly *** the inner surface smoothness is less than 0.2,the highest capture efficiency and its corresponding average collision number interval are independent of the capture section’s geometry and its mesh *** the inner surface smoothness is higher than 0.2,the capture efficiency will decrease by installing any capture *** on the present results,the manufacturing process and material selection are suggested to be prioritized during the intake geometry design in engineering ***,the highest capture efficiency can be achieved by adjusting the length and mesh size of the capture section.

关键词： Atmosphere-breathing electric propulsion Capture efficiency Capture section Intake Test particle Monte Carlo Very low earth orbit

Simultaneous dual-region two-photon imaging of biological dynamics spanning over 9 mm in vivo

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Photonics Research 2024年第3期12卷 456-464页

作者： CHI LIU cheng JIN JUNHAO DENG JUNHAO liang LIcheng zhang LINGJIE KONG State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing 100084China School of Life Sciences Tsinghua UniversityBeijing 100084China Senior Department of Orthopedics The Fourth Medical Center of Chinese PLA General HospitalBeijing 100853China IDG/McGovern Institute for Brain Research Tsinghua UniversityBeijing 100084China

Biodynamical processes,especially in system biology,that occur far apart in space may be highly *** study such biodynamics,simultaneous imaging over a large span at high spatio-temporal resolutions is highly *** example,large-scale recording of neural network activities over various brain regions is indispensable in ***,limited by the field-of-view(FoV)of conventional microscopes,simultaneous recording of laterally distant regions at high spatio-temporal resolutions is highly ***,we propose to extend the distance of simultaneous recording regions with a custom micro-mirror unit,taking advantage of the long working distance of the objective and spatio-temporal *** demonstrate simultaneous dual-region two-photon imaging,spanning as large as 9 mm,which is 4 times larger than the nominal FoV of the *** verify the system performance in in vivo imaging of neural activities and vascular dilations,simultaneously,at two regions in mouse brains as well as in spinal cords,*** adoption of our proposed scheme will promote the study of systematic biology,such as system neuroscience and system immunology.

关键词： recording vivo dynamics