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Present status of the KsTAR superconducting Magnet system Development

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Plasma science and Technology 2004年第5期6卷 2445-2450页

作者： Keeman Kim H.K.Park K.R.Park B.s.Lim s.I.lee M.K.Kim y.Chu W.H.Chung s.H.Baek J.y.Cho H.yonekawa A.Chertovskikh y.B.Chang J.s.Kim C.s.Kim D.J.Kim N.H.song K.P.Kim y.J.song I.s.Woo W.s.Han D.K.lee y.K.Oh K.W.Cho J.s.Park G.s.lee H.J.lee T.K.Ko s.J.lee National NationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalNationalKorea Atomic Energy Research InstituteDaejeonRepublic of KoreaYonsei UniversitySeoulRepublic of KoreaYonsei UniversitySeoulRepublic of Korea Fusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science InstituteDaejeonRepublic of KoreaFusion R&D CenterKorea Basic Science

The mission of Korea superconducting Tokamak Advanced Research (KsTAR)project is to develop an advanced steady.s.ate superconducting tokamak for establishing a scientificand technological basis for an attractive fusion reactor. Because one of the KsTAR mission is toachieve a steady.s.ate operation, the use of superconducting coils is an obvious choice for themagnet system. The KsTAR superconducting magnet system consists of 16 Toroidal Field (TF) coils and14 Poloidal Field (PF) coils. Internally-cooled Cable-In-Conduit Conductors (CICC) are put into usein both the TF and PF coil systems. The TF coil system provides a field of 3.5 T at the plasmacenter and the PF coil system is able to provide a flux swing of 17 V-sec. The major achievement inKsTAR magnet-system development includes the development of CICC, the development of a full-size TFmodel coil, the development of a coil system for background magnetic-field generation , theconstruction of a large-scale superconducting magnet and CICC test facility. TF and PF coils are inthe stage of fabrication to pave the way for the scheduled completion of KsTAR by the end of 2006.

关键词： superconducting magnet KsTAR CICC

CORROsION FATIGUE BEHAVIOR OF sTAINLEss sTEEL 3RE60 IN 3.5% sODIUM CHLORIDE sOLUTION

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Acta Metallurgica sinica(English Letters) 2002年第6期15卷 538-544页

作者： B.F. Ding,y.s. Wu, s.H. Abubakir, B. Cao and C.W.Duschool of Materials science and Engineering, University of science and Technology Beijing, Beijing 100083, ChinaBeijing Key Laboratory for Corrosion, Erosion and surface science, Beijing 100083, China school of Materials science and Engineering University of Science and Technology Beijing Beijing Key Laboratory for Corrosion Erosion and Surface Science

The corrosion fatigue behavior of stainless steel 3RE60 in 3.5%NaCl solution was studied at different cyclic stress levels. The results showed that both intergranular corrosion cracking and transgranular corrosion cracking initiated at the bottom of pits. The corrosion fatigue behavior of 3RE60 may be related to complex electrochemical and mechanical coupling effects between the three phases (austenite, ferrite and martensite), where martensite and ferrite were anodic in the corrosion cell and could be prone to crack under certain conditions.

关键词： corrosion fatigue stainless steel 3RE60 phase electrochemical dislocation

Improving maintenance efficiency and safety through a human-centric approach

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Advances in Manufacturing 2021年第1期9卷 104-114页

作者： C.y.s.ew s.K.Ong A.y.C.Nee Graduate school for Integrative sciences and Engineering National University of Singapore28 Medical DriveSingapore 117456Singapore Department of Mechanical Engineering National University of Singapore9 Engineering Drive 1Singapore 117576Singapore

This paper presents an adaptive human-machine interface(HMI)that can provide appropriate sets of digital maintenanceinformation and guidance to an operator during *** takes into consideration the expertise level of the operator and the maintenance context and *** proposed human-centric methodology considers the heart rate,intention,and expertise level of the operator,which can be captured using sensors during maintenance.A set of rules is formulated based on the sensor data to infer the state of the operator during a maintenance *** on the operator state,the adaptive HMI can augment the operator's senses using a scheme that combines visual,audio,and haptic guidance cues during maintenance to enhance the operator's ability to perceive information and perform maintenance *** schemes of visual,audio,and haptic cues are developed based on a comparison of the best practices obtained from experienced operators.

关键词： Augmented reality(AR) Ergonomics Product development Maintenance

Fabrication of sAW sensor for Detecting Chemical Agent

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稀有金属材料与工程 2006年第A03期35卷 433-435页

作者： J H lee B s Joo J s Huh D D lee school of Electronic & Electrical Engineering Kyungpook National UniversityKorea Dept.of Materials science and Metallurgy Kyungpook National UniversityKorea

sAW sensors using five different types of polymer to detect of chemical agents(DMMP,CH_3CN,CH_2Cl_2,DCP) have been fabricated and its gas response characteristics were extensively *** polymers used as the sensing material are poly.s.butylene(PIB),polyepichlorohydrin(PECH),polydimethy.s.loxane(PDMs),poly.s.prene(PIP)and polybutadiene(PBD).Their thin films were coated on quartz substrate by.s.in coating *** types of simulants gases,dimethylmethylphosphonate(DMMP),acetonitrile(CH_3CN)and dichloromethane(CH_2Cl_2),dichloropentane(DCP)were used as target gases,instead of the real nerve,blood,choking and vesicant *** spin coating of PIB and PECH,the substrates were heated to 65℃with N_2 flow for 1 h to remove the cyclohexane and ethylacetate which was used as solvent. PDMs was heated to 75℃with N_2 flow for 2 h to remove the ethylacetate which was used as *** and PIP on the substrate were heated to 60℃with N_2 flow for 1 h to remove the benzen which was used as *** sensing characteristics of the sAW sensors were measured by using E-5061A network analyzer.

关键词： sAW DMMP CH3CN CH2Cl2 DCP polymer film

工作于断续电感电流模式的PWM开关变换器的统一建模方法

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电子学报 1999年第2期27卷 40-43页

作者：林波涛丘水生华南理工大学电子与通信工程系香港理工大学电子工程学系

基于通用的“高频网络平均法”，本文提出了一种新的ＰＷＭ开关变换器（断续电感电流模式）的统一建模方法．由此方法，我们得到变换器的低频等效电路模型．所得模型既利于建立电路的微分方程，又适合于ＳＰＩＣＥ的仿真，可获得变换器... 详细信息

基于通用的“高频网络平均法”，本文提出了一种新的ＰＷＭ开关变换器（断续电感电流模式）的统一建模方法．由此方法，我们得到变换器的低频等效电路模型．所得模型既利于建立电路的微分方程，又适合于ＳＰＩＣＥ的仿真，可获得变换器的直流特性及小信号特性．仿真及实验结果证明了该模型的正确性．

关键词：开关功率变换器建模 CICM PWM 变换器

In-situ production of ozone and ultraviolet light using a barrier discharge reactor for wastewater treatment

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Journal of Zhejiang University.s.ience A(Applied Physics & Engineering) 2009年第9期10卷 1359-1366页

作者： Jin-Oh JO y.s.MOK Department of Chemical and Biological Engineering Jeju National University

A dielectric barrier discharge (DBD) reactor consisting of water-filled dielectric tube electrodes was used for the treatment of wastewater. The inner dielectric tube, which acted as the discharging electrode, was filled with an aqueous electrolyte solution. The outer dielectric tube, which served as the other electrode, was in contact with the wastewater, which was grounded. The present reactor system was energy-efficient for the production of ozone, not only because the perfect contact between the aqueous electrode and the dielectric surface minimized the loss of the electrical energy, but also because the DBD reactor was cooled by the wastewater. In addition, the ultraviolet (UV) light produced in the DBD reactor was able to assist in the wastewater treatment since the quartz tube used as the dielectric material was UV-transparent. The performance of the present DBD system was evaluated using a synthetic wastewater formed from distilled water and an azo dye, amaranth. The experimental parameters were the concentration of the electrolyte in the aqueous electrode, the discharge power, the initial pH of the wastewater and the concentration of hydrogen peroxide added to the wastewater. The wastewater treatment system was found to be effective for achieving decomposition of the dye.

关键词： Dielectric barrier discharge (DBD) Aqueous electrode Ozone Ultraviolet (UV) Wastewater

Analysis of Mechanical Properties of Injection Molded short Glass Fibre (sGF)/Calcite/ABs Composites

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Journal of Materials science & Technology 1997年第5期13卷 389-396页

作者： Fu, s.y. Lauke, B. Institute for Polymer Research Dresden e.V 01069 Dresden Hohe Str.6 Germany

Acrylonitrile-butadiene-styrene (ABs), with and without calcium carbonate (calcite) particles,was used as the matrix for reinforcement with as-received short-glass fibres (were originallytreated by the manufacturer) and sized short-glass fibres with two amino-silane coupling *** calcite particle content is 0, 11.7 and 23.5 vol. pct for the matrices. The glass fiber contentis 0, 10 and 15 vol. pct. The matrix materials and corresponding composites were compoundedusing a twin screw extruder and dumbbell-shaped tensile bars were prepared with an injectionmolding process. The tensile and flexural properties as well as the unnotched and notchedCharpy impact energies of short glass fibre/calcite/ABs composites were studied in this *** effects of fibres, fibre surface treatments and particles on these mechanical properties ofthe composites were discussed in detail. An importarit information was obtained, which is thatthe tensile and flexural strengths of hybrid sGF/calcite/ABs composites are the same as thoseof corresponding fibre composites when the ratio of the interfacial adhesion strength betweenparticles and matrix to that between fibres and matrix is higher than certain value. otherwise theformer are lower than the latter.

关键词： ABs Calcite/ABs Composites sGF Analysis of Mechanical Properties of Injection Molded short Glass Fibre

Transmission of 2.5 Gb/s WDM Channels spaced at 5 GHz over 480 km of single-Mode Fiber

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光学学报 2003年第S1期23卷 537-538页

作者： s. B. Jun y. C. Chung Korea Advanced Institute of science and TechnologyDepartment of Electrical Engineering 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 KoreaKorea Advanced Institute of Science and TechnologyDepartment of Electrical Engineering 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 Korea

We demonstrate the transmission of 2.5-Gb/s WDM signals spaced at 5 GHz over 480 km of single-mode fiber. The results indicate that it should be possible to transmit more than one thousand 2.5-Gb/s channels spaced at ... 详细信息

关键词： WDM on in Transmission of 2.5 Gb/s WDM Channels spaced at 5 GHz over 480 km of single-Mode Fiber GHz of over

Different fundus imaging modalities and technical factors in AI screening for diabetic retinopathy:a review

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Eye and Vision 2020年第1期7卷 201-213页

作者： Gilbert Lim Valentina Bellemo yuchen Xie Xin Q.lee Michelle y.T.yip Daniel s.W.Ting school of Computing National University of SingaporeSingaporeSingapore singapore Eye Research Institute Singapore National Eye CentreSingaporeSingapore Duke-NUs Medical school National University of Singapore11 Third Hospital Road AvenueSingapore 168751Singapore Vitreo-Retinal service Singapore National Eye Center11 Third Hospital Road AvenueSingapore 168751Singapore Artificial Intelligence in Ophthalmology Singapore Eye Research Institute11 Third Hospital Road AvenueSingapore 168751Singapore

Background:Effective screening is a desirable method for the early detection and successful treatment for diabetic retinopathy,and fundus photography is currently the dominant medium for retinal imaging due to its convenience and *** screening using fundus photographs has however involved considerable costs for patients,clinicians and national health systems,which has limited its application particularly in less-developed *** advent of artificial intelligence,and in particular deep learning techniques,has however raised the possibility of widespread automated *** text:In this review,we first briefly.s.rvey major published advances in retinal analysis using artificial *** take care to separately describe standard multiple-field fundus photography,and the newer modalities of ultrawide field photography and smartphone-based ***,we consider several machine learning concepts that have been particularly relevant to the domain and illustrate their usage with extant ***:In the ophthalmology field,it was demonstrated that deep learning tools for diabetic retinopathy.s.ow clinically acceptable diagnostic performance when using colour retinal fundus *** intelligence models are among the most promising solutions to tackle the burden of diabetic retinopathy management in a comprehensive ***,future research is crucial to assess the potential clinical deployment,evaluate the cost-effectiveness of different DL systems in clinical practice and improve clinical acceptance.

关键词： Artificial intelligence Deep learning Diabetic retinopathy Fundus photographs Retinal imaging modalities survey