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Detailed Analysis of the Transient Voltage in a JT-60SA PF Coil Circuit

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Plasma Science and Technology 2013年第2期15卷 148-151页

作者： k. YAMAUCHI k. shimada T. TERAk.DO M. MATSUk.WA R. COLETTI A. LAMPASI E. GAIO A. COLETTI L. NOVELLO Japan Atomic Energy Agency 801-1 Mukoyama Naka Ibaraki 311-0193 Japan ENEA 1-00044 Frascati Rome Italy Consorzio RFX Euratom-ENEA Association C.so Stati Uniti 4Padova Veneto 35127Italy Fusion for Energy Boltzmannstr 2Garching Bavaria 85748 Germany

A superconducting coil system is actually complicated by the distributed parameters, e.g. the distributed mutual inductance among turns and the distributed capacitance between adjacent conductors. In this paper, such a complicated system was modeled with a reasonably simplified circuit network.with lumped parameters. Then, a detailed circuit analysis was conducted to evaluate the possible voltage transient in the coil circuit. As a result, an appropriate （minimum） snubber capacitance for the Switching Network.Unit, which is a fast high voltage generation circuit in JT-60SA, was obtained.

关键词： JT-60SA power supply transient voltage snubber PSIM

Mission of the National Cancer Center Hospital in Japan to promote clinical trials for precision medicine

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Cancer Biology & Medicine 2024年第1期21卷 1-3页

作者： k.zuak. shimada k.nichi Nak.mura Noboru Yamamoto Department of Hepatobiliary and Pancreatic Surgery National Cancer Center HospitalTokyo 104-0045Japan Clinical Research Support Offce National Cancer Center HospitalTokyo 104-0045Japan Department of Experimental Therapeutics National Cancer Center HospitalTokyo 104-0045Japan

Precision medicine is a growing field *** its potential benefit to many patients,several major obstacles must be overcome before precision medicine can be more widely used in clinical *** main obstacles are associated... 详细信息

关键词： clinical Cancer overcome

A Comparative Study of Two Tree-Based Models for Predicting Flyrock.Velocity at Open Pit Bench Mining

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Open Journal of Applied Sciences 2024年第2期14卷 267-287页

作者： Ezatullah Rawnaq Bassir Esmatyar Ak.hiro Hamanak. Tak.shi Sasaok. Hidek. shimada Department of Earth Resources Engineering Kyushu University Fukuoka Japan Department of Mining and Mineral Engineering Suleyman Demirel University Isparta Türkiye

Blasting is a cost-effective technique to break.hard rock.volumes by using explosives in the mining and civil engineering realms. Moreover, although blasting is a designed process and plays an indispensable role in these industries, it can also have multiple adverse environmental impacts. One such effect is flyrock. which poses risk. to nearby machinery, and residential structures, and can even lead to injuries or fatalities. To optimize blasting efficiency as well as restrict side effects, prediction of the blast aftereffects is vital. Therefore, the present work.focuses on using two machine learning methods to predict the velocity of flyrock.in the open pit mine. To address this issue, a comprehensive dataset was gathered from the open pit mine. Then, Decision Tree and Random Forest algorithms were employed to predict flyrock.velocity. The Random Forest model demonstrated superior performance compared to the Decision Tree model. Nonetheless, the performance of the Decision Tree model was deemed satisfactory, as evidenced by its coefficient of determination value of 0.83, mean squared error (MSE) of 4.2, and mean absolute percentage error (MAPE) of 5.6%. Considering these metrics, it is reasonable to conclude that tree-based algorithms can be effective in predicting flyrock.velocity.

关键词： Flyrock Machine Learning Bench Blasting Coefficient of Determination

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具有皮肤屏障功能的MPC聚合物

国际纺织导报 2008年第8期36卷 7-8,10,11页

作者： M. Mitani H. Yamamoto k. shimada 喻长远（译）申熠（校） NOF公司日本不详

Lipidure的第一个效能是使人的细胞和组织柔软。根据保护人体皮肤的效能介绍了MPC聚合物,该聚合物是Lipidure的主要成分。介绍了用Lipidure改性的纺织品。MPC聚合物不仅具有降低毒性作用和抗刺激效能,而且用Lipidure改性的纺织品提高了... 详细信息

Lipidure的第一个效能是使人的细胞和组织柔软。根据保护人体皮肤的效能介绍了MPC聚合物,该聚合物是Lipidure的主要成分。介绍了用Lipidure改性的纺织品。MPC聚合物不仅具有降低毒性作用和抗刺激效能,而且用Lipidure改性的纺织品提高了皮肤的屏障性能。

关键词： MPC聚合物性能皮肤屏障功能

Amelioration of acidic soil using fy Ash for Mine Revegetation in PostMining Land

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International Journal of Coal Science & Technology 2022年第3期9卷 201-206页

作者： Ak.hiro Hamanak. Tak.shi Sasaok. Hidek. shimada Shinji Matsumoto Department of Earth Resources Engineering Faculty of EngineeringKyushu University819-0395 FukuokaJapan Geological Survey of Japan National Institute of Advanced Industrial Science and Technology(AIST)305-8567 TsukubaJapan

This paper described the use of fy ash for soil amelioration of acidic soils to promote plant *** mining sites,acid sulfate soils/rock.,which contain sulfde minerals(*** FeS_(2)),have appeared as a result of overburden *** excessively acidic condition inhibits plant growth due to the dissolution of harmful elements,such as Al,Fe,and *** ash,an alk.line byproduct of coal combustion generated in thermal power plants is expected to be adopted to ameliorate acidic ***,the mixing ratio of fy ash must be considered because excessive addition of fy ash can have a negative impact on plant growth due to its physical/chemical *** pot trials using Acacia mangium demonstrate the evolution of plant growth with a 5%–10%addition of fy ash into acidic *** the acidic soil has a high potential for metal dissolution,the metal ions leached from the acidic soil are large,mak.ng it difcult to improve plant growth due to osmotic and ionic *** work.suggests that the efects of fy ash on metal ions leached from the soil have to be considered for the amelioration of acidic soil.

关键词： Acid Soil Coal Ash Metal Accumulation Plant Growth

胼胝体的角度在诊断特发性正常压力脑积水中的临床影响

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国际医学放射学杂志 2009年第1期32卷 93-93页

作者： k. Ishii T. k.nda A. Harada N. Miyamoto T. k.waguchi k. shimada 李志明 Department of Radiology and Nuclear Medicine HyogoBrain and Heart Center 520 Saisho -Ko Himeji Hyogo 670 -0981 Japan

研究胼胝体角度的测量在诊断特发性正常压力脑积水（INPH）中的价值。对34例INPH病人、34例阿尔茨海默病（AD）病人及34例正常对照组（NC）受试者进行三维MRI检查。在后联合垂直于前后联合平面的冠状位MRI上测量所有受试者胼胝体的角度... 详细信息

研究胼胝体角度的测量在诊断特发性正常压力脑积水（INPH）中的价值。对34例INPH病人、34例阿尔茨海默病（AD）病人及34例正常对照组（NC）受试者进行三维MRI检查。在后联合垂直于前后联合平面的冠状位MRI上测量所有受试者胼胝体的角度。INPH组病人的胼胝体角度（平均值±标准差：66°±14°）显著小于AD组（104°±15°）及NC组（121°±11°）。

关键词：胼胝体角度特发性正常压力脑积水 MRI 阿尔茨海默病

A Consistent Time Level Implementation Preserving Second-Order Time Accuracy via a Framework.of Unified Time Integrators in the Discrete Element Approach

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Computer Modeling in Engineering & Sciences 2023年第3期134卷 1469-1487页

作者： Tao Xue YazhouWang Masao shimada David Tae k.mar Tamma Xiaobing Zhang School of Energy and Power Engineering Nanjing University of Science and TechnologyNanjing210094China'2Department of Mechanical EngineeringUniversity of Minnesota-Twin CitiesMinneapolis55455USA

In this work.a consistent and physically accurate implementation of the general framework.of unified second-order time accurate integrators via the well-k.own GSSSS framework.in the Discrete Element Method is *** improved tangential displacement evaluation in the present implementation of the discrete element method has been derived and implemented to preserve the consistency of the correct time level evaluation during the time integration process in calculating the algorithmic tangential *** numerical examples have been used to validate the proposed tangential displacement evaluation;this is in contrast to past practices which only seem to attain the first-order time accuracy due to inconsistent time level implementation with different algorithms for normal and tangential *** comparisons with the existing implementation and the superiority of the proposed implementation are given in terms of the convergence rate with improved numerical accuracy in ***,several schemes via the unified second-order time integrators within the framework.of the GSSSS family have been carried out based on the proposed correct *** the numerical results demonstrate that using the existing state-of-the-art implementation reduces the time accuracy to be first-order accurate in time,while the proposed implementation preserves the correct time accuracy to yield second-order.

关键词： Computational dynamics time integration Discrete Element Method(DEM)

The Fundamentals Underlying the Computations of Acceleration for General Dynamic Applications:Issues and Noteworthy Perspectives

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Computer Modeling in Engineering & Sciences 2015年第2期104卷 133-158页

作者： M.shimada A.Hoitink.k.k.Tamma Department of Mechanical Engineering University of Minnesota111 Church St.SEMinneapolisMN55455USA.

To-date,with the exception of the Newmark.method and the midpoint rule,most computational algorithms under the umbrella of LMS methods,which are predominantly employed in research and commercial software fail to properly evaluate acceleration computations accurately for conducting the numerical dynamic ***,this is not trivial and a sound theoretical basis of the fundamental underlying issues is described in *** this paper,we provide a resolution and point-out several noteworthy perspectives to address the proper evaluation of acceleration computations for structural dynamics applications with focus on the class of LMS methods as an illustration.

关键词： acceleration trivial illustration

Intrinsic ferroelectrics and carrier doping-induced metallic multiferroics in an atomic wire

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Journal of Materiomics 2023年第5期9卷 892-898页

作者： Tao Xu Jingtong Zhang Chunyu Wang Xiaoyuan Wang Tak.hiro shimada Jie Wang Hongxin Yang Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo315201China Department of Mechanical Engineering and Science Kyoto UniversityNishikyo-kuKyoto615-8540Japan Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou310027China Zhejiang Laboratory Hangzhou311100ZhejiangChina k.y Laboratory of Pressure Systems and Safety Ministry of Education East China University of Science and TechnologyShanghai200237China

Low-dimensional multiferroic metals characterized by the simultaneous coexistence of ferroelectricity,conductivity,and magnetism hold tremendous potential for scientific and technological ***,the mutually exclusive mechanisms among these properties impede the discovery of multifunctional conducting multiferroics,especially at the ***,based on first-principles calculations,we design and demonstrate intrinsic one-dimensional(1D)ferroelectrics and carrier dopinginduced metallic multiferroics in an atomicWOF4 ***4 atomic wire that can be derived from a 1D van derWaals crystal exhibits pronounced ferroelectricity manifested in the form of large cooperative atomic *** performing Monte Carlo simulations with an effective Hamiltonian method,we obtain the nanowire that can sustain a high Curie temperature,indicating its potential for roomtemperature ***,doping with electrons is found to induce magnetism and metallic conductivity that coexists with the ferroelectric distortion in the *** appealing properties in conjunction with the experimental feasibility enable the doped WOF4 nanowire to act as a promising atomic-scale multifunctional material.

关键词： 1D materials Ferroelectrics Metallic multiferroics First-principles calculations Electron doping