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Runaway.Electron Suppression by.ECRH and RMP in KSTAR

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Plasma Science and Technology 2013年第2期15卷 119-122页

作者： A. C. ENGLAND z. y. CHEN D. C. SEO J. CHUNG y. S. LEEV J. W. y.O W. C. KIM y. S. BAE y. M. JEONV J. G. KWAK M. KWON KSTAR Team National Fusion Research Institute Daejeon Republic of Korea Huaz.ong University.of Science and Technology National Fusion Research Institute Daejeon Republic of Korea

We have observed reduction of the runaway.electron sy.chrotron radiation, hard X-ray.（HXR） intensity. and HXR energy.after apply.ng 110 GHz.2nd harmonic electron cy.lotron resonant heating （ECRH） during runaway.electron （RE） discharges at low density.with startup runaway.electrons. However, we did not see a significant reduction of X-ray. from 170 GHz.2nd harmonic ECRH at a higher field. A recently.installed IR TV camera was used to observe the forward cone of sy.chrotron radiation from high energy.REs in KSTAR. We have observed changes to the sy.chrotron images and reduction of the HXR by.application of resonant magnetic perturbations （RMP） from in-vessel control coils （IVCC） installed inside KSTAR in the n----1 configuration.

关键词： tokamak runaway.electron suppression X-ray sy.chrotron radiation

NUMERICAL SIMULATION OF ROUND TO OVAL ROLLING PROCESS

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Acta Metallurgica Sinica(English Letters) 2000年第2期13卷 428-433页

作者： y. W. Wang, y. L. King, D. H. y.an, S. G. Liu and z. y. y. 1 ) University.of Science and Technology.Beijing, Beijing 100083, China 2) Day. Special Steel Co., Huangshi 435001, China

Three dimensional thermal-mechanical coupled elasto-plastic FEM has been used for simulation of round to oval single pass rolling. The analy.is was conducted using MARC/AUTOFORCE1. 2 code. The material is assumed to be elasto-plastic and it obey.the Von Mises y.eld criterion and Prandtl- Reuss rule. Deformation of the workpiece is simulated in a step-by.step manner,updating the coordinates of material points and the property.after each step, so that both nonsteady.state and stendy.state deformation can be simulated. The heat transfter between the workpiece, the rolls, and enviroment and the heat generation due to plastic work and friction force, are considered in the analy.- *** the deformation shape of the workpiece, distributions of strains, stresses, strain rates and temperatures, roll-separating force and roll torque are presented.

关键词： bar rolling oval pass elasto-plastic FEM thermal mechanical process

NUMERICAL SIMULATION OF MOLTEN POOL AND CONTROL STRATEGy.OF KISS POINT IN A TWIN-ROLL STRIP CASTING PROCESS

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Acta Metallurgica Sinica(English Letters) 2008年第6期21卷 459-468页

作者： G.M. Cao C.G. Li z. y. Liu D. Wu G.D. Wang X.H. Liu State Key.Laboratory.of Rolling ＆ Automation Northeastern University Shenyang 110004 China

Coupled turbulent flow, temperature fields of the twin-roll casting strip process were simulated by.three-dimensional finite element method. Based on the heat balance calculation and using inverse methods between the simulations and real experiments, the relational models among casting speed, location, and coefficient of heat transfer between molten metal and rolls in different regions are given. In the simulation, the calculated surface temperatures are in good agreement with the measured values. An on-line model of kiss point is derived by.simulations and the geometry.of molten pool, corresponding control strategy.is also proposed.

关键词： Twin-roll strip casting Coupled temperature and flow field Numerical simulation Kiss point Control strategy

A retrospective research on postoperative sudden death

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麻醉与监护论坛 2014年第6期21卷 435-437页

作者： z.-y. Chen Anesthesia Department of Cancer Hospital Department of Oncology Shanghai Medical College Fudan UniversityShanghai RR. China 200032

In clinical, a very.few of patients died suddenly.several day. or even more than ten day. later after the operation. Before the death, these patients were in good condition, and there were no death threatening sings and sy.ptoms. Because the accident not being anticipated, doctors and nurses are all not being prepared for the rescue. Once the accident occurs, the relatives of the patient feel unacceptable, which will certainly.arouse severe dispute and the doctors feel mistreated also. Because there is no way.to get the accurate possibility.of postoperative sudden death (POSD), there is rare document having this area discussed. Thus, I will have POSD discussed based on my.personal clinical experiences.

关键词：突然死亡事故发生临床经验患者医生手术

Surface Effects on the Scatter of SH-Wave by.a Shallow Buried the Elliptical Hole

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Open Journal of Applied Sciences 2019年第6期9卷 480-491页

作者： z. y. Ou y. Q. Sun School of Science Lanzhou University of Technology Gansu Lanzhou China

The methods of complex function, multi-polar coordinate sy.tem, and conformal mapping are used to solve dy.amic stress concentration factor. The surface elasticity.theory.is applied to obtain the stress boundary.conditions on the surface. The effects of frequency.and the ration of the major and minor axis of the ellipse on the dy.amic stress concentration factor around the elliptical nano-hole are discussed in detail. When the siz. of elliptical hole shrinks to nanometers, the numerical results show that the surface effect has a significant effect on the scattering of SH-wave.

关键词： Conformal Mapping Surface Effect Dy.amic Stress Concentration Factor Elliptical Hole SH-Wave Complex Function

Dy.amic Monitoring of Plant Cover and Soil Erosion Using Remote Sensing, Mathematical Modeling, Computer Simulation and GIS Techniques

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American Journal of Plant Sciences 2013年第7期4卷 1466-1493页

作者： z. y. z.ng J. z. Cao z. J. Gu z. L. z.ang W. z.eng y. Q. Cao H. y. Peng College of Geographical Science Nanjing Normal University Nanjing China Dandong Bureau of Environment Protection Dandong China Dandong Center for Oases Research Dandong China Nanjing Institute of Soil Science Chinese Academy of Sciences Nanjing China. National Satellite Meteorological Center Meteorological Administration Beijing China School of Architecture and Urban Planning Suzhou University of Science and Technology Suzhou China School of Bio-Chemical and Environmental Engineering Nanjing Xiaozhuang University Nanjing China

Dy.amic monitoring of plant cover and soil erosion often uses remote sensing data, especially.for estimating the plant cover rate (vegetation coverage) by.vegetation index. However, the latter is influenced by.atmospheric effects and methods for correcting them are still imperfect and disputed. This research supposed and practiced an indirect, fast, and operational method to conduct atmospheric correction of images for getting comparable vegetation index values in different times. It tries to find a variable free from atmospheric effects, e.g., the mean vegetation coverage value of the whole study.area, as a basis to reduce atmospheric correction parameters by.establishing mathematical models and conducting simulation calculations. Using these parameters, the images can be atmospherically.corrected. And then, the vegetation index and corresponding vegetation coverage values for all pixels, the vegetation coverage maps and coverage grade maps for different y.ars were calculated, i.e., the plant cover monitoring was realiz.d. Using the vegetation coverage grade maps and the ground slope grade map from a DEM to generate soil erosion grade maps for different y.ars, the soil erosion monitoring was also realiz.d. The results show that in the study.area the vegetation coverage was the lowest in 1976, much better in 1989, but a bit worse again in 2001. Towards the soil erosion, it had been mitigated continuously.from 1976 to 1989 and then to 2001. It is interesting that a little decrease of vegetation coverage from 1989 to 2001 did not lead to increase of soil erosion. The reason is that the decrease of vegetation coverage was chiefly.caused by.urbaniz.tion and thus mainly.occurred in very.gentle terrains, where soil erosion was naturally.slight. The results clearly.indicate the details of plant cover and soil erosion change in 25 y.ars and also offer a scientific foundation for plant and soil conservation.

关键词： Atmospheric Correction Field Measurement Modeling Regression Simulation Soil Erosion Vegetation Coverage Vegetation Index

Amalgamated-signal Cy.ometer Based on TMS320F28335

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Energy.and Power Engineering 2013年第4期5卷 1226-1229页

作者： z. y. Xu W. T. Lv z. y. Li College of Electrical Engineering Zhejiang University Hangzhou China

In our design, an amalgamated-signal cy.ometer is developed with a TMS320F28335 DSP chip ---- we use its on-chip 12-bit 16-channel AD to conduct a novel dual-sequencer sy.chroniz. sampling and averaged to improve the accuracy. Considering the algorithm, we use TI's C28x_FPU_Lib to conduct a FFT with sampled results and correct spectrum with?Time-Shift Phase Difference Correcting Spectrum Method based on all-phase spectral analy.is. Namely. we design a sampling-frequency.self-adaption algorithm which makes operation keep on without outside-hardware command. Actually. the test result shows that our design's frequency.resolution ratio is up to 0.4%, and the maximum frequency.s D-value between main and minor signal is up to 29.99 kHz.

关键词： Digital Frequency Meter Same Precision Measurement DSP All-phase Spectral Analy.is Sampling-frequency Self-adaption

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关于电力系统广域保护的评述

高电压技术 2012年第3期38卷 513-520页

作者：薛禹胜雷兴薛峰文福拴 z. y. Dong G. Ledwich 山东大学电气工程学院济南250061 国网电力科学研究院／南京南瑞集团公司南京210003 浙江大学电气工程学院杭州310027 The University.of Newcastle Callaghan NSW 2308 Australia Queensland University.of Technology Brisbane QLD 4001 Australia

为有利于电力系统停电防御体系的进一步发展,讨论电力系统的广域保护,包括广域设备保护和广域系统保护的功能、控制方式及系统结构;回顾其信息采集、知识提取和控制决策方面的进展。从理论和应用相结合的观点剖析广域后备保护的可行性... 详细信息

为有利于电力系统停电防御体系的进一步发展,讨论电力系统的广域保护,包括广域设备保护和广域系统保护的功能、控制方式及系统结构;回顾其信息采集、知识提取和控制决策方面的进展。从理论和应用相结合的观点剖析广域后备保护的可行性、困难和发展方向;指出需要在算法与受扰轨迹的知识提取上取得重大突破,并与数值仿真相结合,才能真正发挥相量测量单元在广域保护中的作用;强调按风险观点将广域保护与预防控制及传统保护协调的重要性。

关键词：电力系统相量测量单元广域测量广域保护设备保护系统保护预防控制传统保护

An analy.ical solution for the elastic fields near spheroidal nano-inclusions

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Acta Mechanica Sinica 2009年第6期25卷 821-830页

作者： z. y. Ou G. F. Wang T. J. Wang Department of Engineering Mechanics,MOE Key.Laboratory.for Strength and Vibration,Xi’an Jiaotong University. Xi’an 710049, China Department of Engineering Mechanics MOE Key Laboratory for Strength and Vibration Xi’an Jiaotong University Xi’an China

When the siz. of an inclusion shrinks to nanometers, interface energy.play. an important role in the deformation around it. In the present paper, we consider the effect of interface energy.on the elastic fields near a spheroidal nanoinclusion embedded in an elastic medium on the basis of surface elasticity.theory. Using Boussinesq-Sadowsky.potential function method, we obtain the deformation field near the inclusion subjected to a uniformly.uniaxial loading at infinity. The results show that the elastic fields near the nano-inclusion depend strongly.on the interface properties, the siz. and shape of inclusion. These new characteristics may.be helpful to understand various relevant mechanical performances of nanosiz.d inhomogeneities.

关键词： Interface energy..Elastic fields .Inhomogeneity.- Nanometer