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2035 1

SOFC 1

SOFC电池堆 1

“医养智慧联动” 1

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先进半导体材料 1

平均运行链长；辅助信息；累积和控制图；位置参数；中值控制图 1

智慧养老 1

注意缺陷多动障碍（ADHD）；辅助诊断；计算机视觉；深度学习；BERT 1

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Three-dimensional electromagnetic analysis and design of permanent magnet retarder

Lezhi YE, Desheng LI, Bingfeng JIAO

《机械工程前沿（英文）》 2010年 第5卷 第4期   页码 438-441 doi: 10.1007/s11465-010-0111-0

摘要： An eddy current retarder for vehicles generates much heat when it works continuously, which leads to serious decline in braking torque. This paper proposes a novel permanent magnet retarder (PMR) for vehicles, whose cooling system connects with engine cooling-water. A three-dimensional finite element model is developed to model the electromagnetic behavior of a permanent magnet retarder under a constant speed. The magnetic field and eddy current field in PMR are numerically solved by a finite element method. By accounting for the nonlinear permeability of the rotor and the weakened effect in the magnetic field that is generated by the eddy current magnetic field, the calculation accuracy of air-gap magnetic field is enhanced. Experiment shows that the temperature of the retarder is less than 150°C, and the braking torque keeps the hard characteristics curve. The calculated air-gap magnetic flux density is fairly good agreement with the measured one.

关键词： auxiliary brake     permanent magnet retarder     water-cooling     finite element method    

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Real-time monitoring of brake shoe keys in freight cars

Rong ZOU,Zhen-ying XU,Jin-yang LI,Fu-qiang ZHOU

《信息与电子工程前沿（英文）》 2015年 第16卷 第3期   页码 191-204 doi: 10.1631/FITEE.1400305

摘要： Condition monitoring ensures the safety of freight railroad operations. With the development of machine vision technology, visual inspection has become a principal means of condition monitoring. The brake shoe key (BSK) is an important component in the brake system, and its absence will lead to serious accidents. This paper presents a novel method for automated visual inspection of the BSK condition in freight cars. BSK images are first acquired by hardware devices. The subsequent inspection process is divided into three stages: first, the region-of-interest (ROI) is segmented from the source image by an improved spatial pyramid matching scheme based on multi-scale census transform (MSCT). To localize the BSK in the ROI, census transform (CT) on gradient images is developed in the second stage. Then gradient encoding histogram (GEH) features and linear support vector machines (SVMs) are used to generate a BSK localization classifier. In the last stage, a condition classifier is trained by SVM, but the features are extracted from gray images. Finally, the ROI, BSK localization, and condition classifiers are cascaded to realize a completely automated inspection system. Experimental results show that the system achieves a correct inspection rate of 99.2% and a speed of 5 frames/s, which represents a good real-time performance and high recognition accuracy.

关键词： Condition monitoring     Feature expression     Brake shoe key     Machine vision    

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Wear mechanism of disc-brake block material for new type of drilling rig

WANG Xinhua, WANG Simin, ZHANG Siwei, WANG Deguo

《机械工程前沿（英文）》 2008年 第3卷 第1期   页码 10-16 doi: 10.1007/s11465-008-0009-2

摘要： To improve friction and wear performance and service life of the disc-brake pair material of a drilling rig, a new type of asbestos-free frictional material with better performance for disc-brake blocks is developed, and its wear mechanism is investigated by friction and wear experiments. Topography and elementary components of the brake block’s wear surface are analyzed by employing SEM and EDAX patterns, revealing its tribological behaviour and wear mechanism. When the frictional temperature is lower, the surface film of the brake block is thinner, dense, smooth with plasticity, and divided into the mixture area, Fe-abundant area, carbon-abundant area and spalling area. The mixture area consists of various constituents of frictional pairs without ploughing and rolling trace. The Fe-abundant area mainly consists of iron and other constituents. The carbon-abundant area is the zone where graphite and organic fibre are comparatively gathered, while the spalling area is the zone where the surface film is spalled and its surface is rough and uneven, with a loose and denuded state. During the period of high frictional temperature, the frictional surface is also divided into the mixture area, Fe-abundant area and spalling area. In this case, the mixture area consists of abrasive dust from friction pairs, and the surface film is distributed with crumby hard granules, exiguous oxide, carbide granules and sheared slender fibre. The Fe-abundant area is mostly an oxide layer of iron with a flaky distribution. Fracture and spalling traces as well as an overlapping structure of multilayer surface films can be easily found on the surface film. The components of the spalling area are basically the same as that of the matrix. At the beginning of wear, the hard peaks from the friction surface of the disc-brake plough on the surface of the brake block. With increasing frictional temperature, the friction surface begins to soften and expand, and oxidized wear occurs at the same time. During the high-temperature wear period, severely influenced by friction heat, obvious softening and plastic flow can be found on the friction surface of the brake block, its anti-shearing ability is weakened, and adhesive wear is intensified. Thermal decomposition of cohesive material in the brake block is simultaneously strengthened, so that constituents shed due to loss of adhesion. Organic fibre is in a flowing state and obviously generates drawing, shearing, carbonization and oxidization. In addition, thermal cracking, thermal oxidization, carbonization and cyclization of organic substances on the surface of brake block can make the friction surface produce pores or cracks, thus fatigue wear occurs.

关键词： asbestos-free frictional     Fracture     cyclization     friction     disc-brake    

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中国先进半导体材料及辅助材料发展战略研究

“先进半导体材料及辅助材料”编写组

《中国工程科学》 2020年 第22卷 第5期   页码 10-19 doi: 10.15302/J-SSCAE-2020.05.002

摘要：

目前，以SiC、GaN为代表的第三代半导体材料快速发展，我国亟需抓住战略机遇期，实现先进半导体材料、辅助材料的自主可控，保障相关工业体系安全。本文在分析全球半导体材料及辅助材料研发与产业发展现状的基础上，寻找差距，结合我国现实情况，提出了构建半导体材料及辅助材料体系化发展、上下游协同发展和可持续发展的发展思路，制定了面向2025年和2035年的发展目标。为推动我国先进半导体材料及辅助材料产业发展，提出了建设集成电路关键材料及装备自主可控工程，SiC和GaN半导体材料、辅助材料、工艺及装备验证平台，先进半导体材料在第五代移动通信技术、能源互联网及新能源汽车领域的应用示范工程，并对如何开展三项工程进行了需求分析，设置了具体的工程目标和工程任务。最后，为推动半导体产业的创新发展，从坚持政策推动，企业和机构主导，整合国内优势资源；把握“超越摩尔”的历史机遇，布局下一代集成电路技术；构建创新链，进行创新生态建设等方面提出了对策建议。

关键词： 先进半导体材料     辅助材料     第三代半导体     2035    

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Transient analysis of thermoelastic contact problem of disk brakes

Ali BELHOCINE, Mostefa BOUCHETARA

《机械工程前沿（英文）》 2013年 第8卷 第2期   页码 150-159 doi: 10.1007/s11465-013-0266-6

摘要：

The main purpose of this study is to analyze the thermomechanical behavior of the dry contact between the brake disk and pads during the braking phase. The simulation strategy is based on computer code ANSYS11. The modeling of transient temperature in the disk is actually used to identify the factor of geometric design of the disk to install the ventilation system in vehicles. The thermal-structural analysis is then used with coupling to determine the deformation established and the Von Mises stresses in the disk, the contact pressure distribution in pads. The results are satisfactory compared to those found in the literature.

关键词： brake disks     heat flux     heat-transfer coefficient     Von Mises stress     contact pressure    

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一种基于辅助信息的新型位置监测累积和中值控制图 Regular Papers

Shahid HUSSAIN, Li-xin SONG, Shabbir AHMAD, Muhammad RIAZ

《信息与电子工程前沿（英文）》 2019年 第20卷 第4期   页码 554-570 doi: 10.1631/FITEE.1700428

摘要： 控制图能检测过程参数变化，是统计过程控制常用工具。休哈特控制图能有效监测大位移，而累积和（CUSUM）控制图能有效监测中、小位移。控制图在使用时通常假定数据无异常值，并且参数已知或已正确估计。实际应用中，某些过程偶尔出现异常值，所以这些假设通常不成立。位置参数监测通常基于均值控制图，严重受不成立假设影响。本文提出几种基于辅助变量的累积和中值控制图，并与其相对应均值控制图进行比较。为监测位置参数，分别检测包含与不含异常值时均值和中值控制图性能。研究对称与非对称过程，并利用累积和控制图监测位置参数，进一步研究所提控制图性能。基于不同运行链长，研究受控和非受控累积和控制图性能。结果表明，存在异常值时，所提控制图比传统控制图性能更优。最后，提供了一个基于混凝土抗压强度与生产质量关系的应用实例。

关键词： 平均运行链长；辅助信息；累积和控制图；位置参数；中值控制图    

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基于人工智能技术的儿童ADHD辅助诊断系统 Research

张雁翼1,孔鸣2,赵天琦2,洪文琛2,谢迪3,王春茂3,杨荣旺1,李荣1,朱强2

《信息与电子工程前沿（英文）》 2021年 第22卷 第3期   页码 400-414 doi: 10.1631/FITEE.1900729

摘要： 传统的儿童注意缺陷多动障碍（ADHD）诊断主要基于由父母/老师填写的调查问卷和医生的临床观察，不仅效率不高，而且诊断准确率很大程度上取决于医生的经验水平。本文将人工智能技术结合到一种软硬件协同辅助诊断系统中，以使ADHD诊断更为高效。通过集成智能分析模块，相机模组将采集受试儿童完成执行功能测试时的眼部注意力、面部表情、3D身体姿态和其他测试信息。然后，提出一种多模态深度学习模型，用于对所采集视频中儿童的异常行为片段进行分类。结合其他系统模块所采集的信息，辅助诊断系统能够自动生成标准化的诊断报告，包括测试结果、异常行为分析、辅助诊断结论和治疗建议。该系统目前实际部署在浙江大学医学院附属儿童医院心理科，用于临床辅助诊断，得到医生和患者一致好评。

关键词： 注意缺陷多动障碍（ADHD）；辅助诊断；计算机视觉；深度学习；BERT    

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Impact of oxygen enriched combustion on the performance of a single cylinder diesel engine

K. RAJKUMAR, P. GOVINDARAJAN

《能源前沿（英文）》 2011年 第5卷 第4期   页码 398-403 doi: 10.1007/s11708-011-0157-7

摘要： In the present experiment, a computerized single cylinder diesel engine with a data acquisition system was used to study the effects of oxygen enriched combustion technology (OECT) on the performance characteristics. The use of different levels of oxygen-enriched air was compared with respect to percentage load. Increasing the oxygen content in the air leads to faster burn rates and increases the combustibility at the same stoichiometry (oxygen-to-fuel ratio). These effects have the potential to increase the thermal efficiency and specific power output of a diesel engine. The power increases considerably with oxygen enrichment. In addition, oxygen enrichment can also be considered as a way to reduce the sudden loss in power output when the engine operates in a high load condition. Assessed high combustion temperature from the oxygen enriched combustion leads to high combustion efficiency. OECT reduces the volume of flue gases and reduces the effects of greenhouse effects. Engine tests were conducted in the above said engine for different loads and the following performance characteristics like brake power (BP), specific fuel consumption (SFC), mean effective pressure, brake thermal efficiency, mechanical efficiency, and exhaust gas temperature were studied. The objective of this paper is to address, in a systematic way, the key technical issues associated with applying OECT to single cylinder diesel engines.

关键词： oxygen enriched combustion     exhaust gas temperature     brake power (BP)     specific fuel consumption (SFC)    

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Availability growth models and verification of power equipment

Jinyuan SHI, Jiamin XU

《能源前沿（英文）》 2021年 第15卷 第2期   页码 529-538 doi: 10.1007/s11708-019-0624-0

摘要： The general availability growth models for large scale complicated repairable system such as electric generating units, power station auxiliaries, and transmission and distribution installations are presented. The calculation formulas for the maintenance coefficient, mathematical expressions for general availability growth models, ways for estimating, and fitting on checking the parameters of the model are introduced. Availability growth models for electric generating units, power station auxiliaries, and transmission and distribution installations are given together with verification examples for availability growth models of 320–1000 MW nuclear power units and 1000 MW thermal power units, 200–1000 MW power station auxiliaries, and 220–500 kV transmission and distribution installations. The verification results for operation availability data show that the maintenance coefficients for electric generating units, power station auxiliaries, transmission and distribution installations conform to the power function, and general availability growth models conform to rules of availability growth tendency of power equipment.

关键词： repairable system     power equipment     electric generating unit     power station auxiliary     transmission and distribution installation     reliability     availability     availability growth model    

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Performance, emission and combustion characteristics of CI engine fuelled with diesel and hydrogen

R. Senthil KUMAR,M. LOGANATHAN,E. James GUNASEKARAN

《能源前沿（英文）》 2015年 第9卷 第4期   页码 486-494 doi: 10.1007/s11708-015-0368-4

摘要： Hydrogen (H ) is being considered as a primary automotive fuel and as a replacement for conventional fuels. Some of the desirable properties, like high flame velocity, high calorific value motivate us to use hydrogen fuel as a dual fuel mode in diesel engine. In this experiment, hydrogen was inducted in the inlet manifold with intake air. The experiments were conducted on a four stroke, single cylinder, water cooled, direct injection (DI), diesel engine at a speed of 1500 r/min. Hydrogen was stored in a high pressure cylinder and supplied to the inlet manifold through a water-and-air-based flame arrestor. A pressure regulator was used to reduce the cylinder pressure from 140 bar to 2 bar. The hydrogen was inducted with a volume flow rate of 4l pm, 6l pm and 8l pm, respectively by a digital volume flow meter. The engine performance, emission and combustion parameters were analyzed at various flow rates of hydrogen and compared with diesel fuel operation. The brake thermal efficiency (BTE) was increased and brake specific fuel consumption (BSFC) decreased for the hydrogen flow rate of 8l pm as compared to the diesel and lower volume flow rates of hydrogen. The hydrocarbon (HC) and carbon monoxide (CO) were decreased and the oxides of nitrogen (NO ) increased for higher volume flow rates of hydrogen compared to diesel and lower volume flow rates of hydrogen. The heat release rate and cylinder pressure was increased for higher volume flow rates of hydrogen compared to diesel and lower volume flow rates of hydrogen.

关键词： hydrogen     brake thermal efficiency     crank angle     compressed ignition (CI)    

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国际固体氧化物燃料电池堆及系统

苏巴 辛格尔

《中国工程科学》 2013年 第15卷 第2期   页码 7-14

摘要：

为了实现固体氧化物燃料电池（SOFC）的广泛应用，世界上许多公司正在致力于SOFC的开发、制造和商业化研究。本文回顾和讨论了SOFC领域的相关发展现状。

关键词： SOFC     SOFC电池堆     管式电池     热电联供     辅助动力单元    

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Cohort study of patients with Stevens–Johnson syndrome and toxic epidermal necrolysis in China: evaluation of risk models and new predictor of pulmonary consolidation on computed tomography

Yanhong Shou, Lu Yang, Yongsheng Yang, Xiaohua Zhu, Feng Li, Bo Yin, Yingyan Zheng, Jinhua Xu

《医学前沿（英文）》 2021年 第15卷 第4期   页码 585-593 doi: 10.1007/s11684-020-0817-2

摘要： Stevens--Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare but severe diseases. This study aimed to validate the predictive ability of risk models in patients with SJS/TEN and propose possible refinement in China. Patients in the Department of Dermatology of Huashan Hospital from January 2008 to January 2019 were included. Results showed that the severity-of-illness score for TEN (SCORTEN) had a good discrimination (area under the receiver operating characteristic curve (AUC), 0.78), and it was superior to auxiliary score (AS) and ABCD-10, which indicates age, bicarbonate level, cancer, dialysis, and 10% involved body surface area (AUC, 0.69 and 0.68, respectively). The calibration of SCORTEN (Hosmer–Lemeshow goodness-of-fit test, = 0.69) was also better than that of AS ( = 0.25) and ABCD-10 ( = 0.55). SCORTEN and ABCD-10 were similar (Brier score (BS), 0.04 and 0.04) in terms of accuracy of predictions. In addition, the imaging appearance of pulmonary consolidation on computed tomography was associated with high mortality. Refined models were formed using the variables and this imaging appearance. The refined AS and ABCD-10 models were similar in discrimination compared with the original SCORTEN (0.74 vs. 0.78, = 0.23; 0.74 vs. 0.78, = 0.30, respectively). Therefore, SCORTEN showed good discrimination performance, calibration, and accuracy, and refined AS or ABCD-10 model may be an option when SCORTEN variables are not available.

关键词： Stevens–Johnson syndrome     toxic epidermal necrolysis     auxiliary score     ABCD-10     pulmonary consolidation    

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“医养智慧联动”的养老模式研究与探索

金心宇,夏琦,张唯,李兰娟

《中国工程科学》 2018年 第20卷 第2期   页码 92-98 doi: 10.15302/J-SSCAE-2018.02.014

摘要：

我国已进入老龄化社会，而我国的养老建设事业仍处于不成熟阶段，养老问题已然成为我国亟待解决的重大问题之一。在国家相关政策的指引下，本文从我国国情出发，提出了一种以大型医院为诊疗主导，利用互联网实现与机构养老、社区养老和居家养老三种养老模式的有机连接，并融合老年病的人工智能云诊疗康复新技术的“医养智慧联动”养老模式。相关实践证明，利用互联网和人工智能及先进有效的综合诊疗技术来解决我国目前养老产业存在的问题具有重要的研究价值，也是一次非常有前景的尝试，符合国家的发展战略和相关政策。

关键词： “医养智慧联动”     智慧养老     互联网     人工智能     辅助诊疗    

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标题 作者 时间 类型 操作

Three-dimensional electromagnetic analysis and design of permanent magnet retarder

Lezhi YE, Desheng LI, Bingfeng JIAO

期刊论文

Real-time monitoring of brake shoe keys in freight cars

Rong ZOU,Zhen-ying XU,Jin-yang LI,Fu-qiang ZHOU

期刊论文

Wear mechanism of disc-brake block material for new type of drilling rig

WANG Xinhua, WANG Simin, ZHANG Siwei, WANG Deguo

期刊论文

中国先进半导体材料及辅助材料发展战略研究

“先进半导体材料及辅助材料”编写组

期刊论文

Transient analysis of thermoelastic contact problem of disk brakes

Ali BELHOCINE, Mostefa BOUCHETARA

期刊论文

一种基于辅助信息的新型位置监测累积和中值控制图

Shahid HUSSAIN, Li-xin SONG, Shabbir AHMAD, Muhammad RIAZ

期刊论文

基于人工智能技术的儿童ADHD辅助诊断系统

张雁翼1,孔鸣2,赵天琦2,洪文琛2,谢迪3,王春茂3,杨荣旺1,李荣1,朱强2

期刊论文

Impact of oxygen enriched combustion on the performance of a single cylinder diesel engine

K. RAJKUMAR, P. GOVINDARAJAN

期刊论文

Availability growth models and verification of power equipment

Jinyuan SHI, Jiamin XU

期刊论文

Performance, emission and combustion characteristics of CI engine fuelled with diesel and hydrogen

R. Senthil KUMAR,M. LOGANATHAN,E. James GUNASEKARAN

期刊论文

国际固体氧化物燃料电池堆及系统

苏巴 辛格尔

期刊论文

Cohort study of patients with Stevens–Johnson syndrome and toxic epidermal necrolysis in China: evaluation of risk models and new predictor of pulmonary consolidation on computed tomography

Yanhong Shou, Lu Yang, Yongsheng Yang, Xiaohua Zhu, Feng Li, Bo Yin, Yingyan Zheng, Jinhua Xu

期刊论文

“医养智慧联动”的养老模式研究与探索

金心宇,夏琦,张唯,李兰娟

期刊论文