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青春 1版

Frequency-dependent viscoelasticity effects on the wave attenuation performance of multi-layered periodic foundations

丛书名：库切小说文库

2004年

作者：（南非）j.m.库切（j.m.Coetzee）王家湘译

2003年诺贝尔文学奖得主j.m.库切。他的小说以结构精致、对话隽永、思辨深邃为特色。然而，他是一个有道德原则的怀疑论者，对当下西方文明中浅薄的道德感和残酷的理性主义给予毫不留情的批判。他以知性的诚实消解了一切自我慰藉的基础... 详细信息

ISBN: (纸本)7533919378

2003年诺贝尔文学奖得主j.m.库切。他的小说以结构精致、对话隽永、思辨深邃为特色。然而，他是一个有道德原则的怀疑论者，对当下西方文明中浅薄的道德感和残酷的理性主义给予毫不留情的批判。他以知性的诚实消解了一切自我慰藉的基础，使自己远离俗丽而无价值的戏剧化的解悟和忏悔。甚至当他在作品中表达自己认定的信念时，譬如为动物的权利辩护，他也阐明了自己的前提，而不仅仅是单方面的诉求。库切的兴趣更多地关注着那些是非清晰却又显示为冲突频仍的情形，如同玛格丽特那幅著名油画中那个男人在镜前端详自己的脖子一样，在关键时刻，库切作品中的人物总是游移退缩、畏葸不前，无法率意而行。这种消极被动既是遮蔽个性的阴霾，却也是面向人性的最后一方聚集地-人们不妨以无法达到目的为由拒绝执行那些暴虐的命令。正是在对人的弱点与失败的探索中，库切抓住了人性中的神圣之火。

关键词：长篇小说南非现代

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Applied mathematics and mechanics(English Edition) 2024年第3期45卷 407-424页

作者： m.SAFI m.VAKILIFARD m.j.m.HmOODI Faculty of Civil Water&Environmental EngineeringShahid Beheshti UniversityTehran ***Iran Faculty of mechanical and Energy Engineering Shahid Beheshti UniversityTehran ***Iran

In this paper,layered periodic foundations(LPFs)are numerically examined for their responses to longitudinal and transverse modes in the time and frequency *** different unit-cells,i.e.,2-layer,4-layer,and 6-layer unit-cells,comprising concrete/rubber,concrete/rubber/steel/rubber,and concrete/rubber/steel/rubber/lead/rubber materials,respectively,are taken into ***,the viscoelasticity behavior of the rubber is modeled with two factors,i.e.,a frequency-independent(FI)loss factor and a linear frequency-dependent(FD)loss *** the extraction of the complex dispersion curves and the identification of the band gaps(BGs),the simulations of wave transmission in the time and frequency domains are performed using the COmSOL *** parametric studies evaluate the effects of the rubber viscoelasticity models on the dispersion curves and the wave transmission for the longitudinal and transverse *** results show that considering the rubber viscoelasticity enhances the wave attenuation ***,the transverse-mode damping is more sensitive to the viscoelasticity model than its longitudinal *** 6-layer unit-cell LPF exhibits the lowest BG,ranging from 4.8 Hz to 6.5 Hz.

关键词： layered metamaterial periodic foundation complex dispersion curve wave transmission diagram

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伊丽莎白·科斯特洛

作者： (南非)库切(Coetzee j.m.)

Health risk of whole body vibration in mining trucks during various operational conditions

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journal of Central South University 2017年第8期24卷 1808-1816页

作者： Rahimdel m.j.m.rzaei m Sattarvand j Hoseinie S.H Department of mining Engineering Sahand University of TechnologyTabriz ***Iran Department of mechanical Engineering Sahand University of TechnologyTabriz ***Iran Department of mining Engineering Isfahan University of TechnologyIsfahan ***Iran

mining machineries are generally exposed to intensive vibrations in harsh mining environment. If vibrations are beyond the tolerable limit, the machine and its operator health will be under the risk. In this work, the vibration of a mining truck at different operational conditions are simulated and discussed. To achieve this aim, three haul roads with low, medium and poor qualities are considered based on the ISO standard. Accordingly, the vibration of a mining truck in different speeds, payload and distribution qualities of materials in the dump body are evaluated in each haul road quality using Trucksim software. The simulation results with statistical discussions indicate that the truck speed and the materials distribution quality have significant effects on the root mean square(RmS) of vertical vibrations. However, the effect of the payload is not considerable on the RmS. moreover, the accumulation of materials on the rear side of the truck dump body is efficient on the vibrational health risk.

关键词： mining trucks operational conditions health risk whole body vibration

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作者： j.m.西梅尔

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青春

作者： (南非)库切(Coetzee j.m.)

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等待野蛮人

作者： (南非)库切(Coetzee j.m.)

Surface morphology and impurity distribution of electron beam recrystallized silicon films on low cost substrates for solar cell absorber

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Rare metals 2006年第z1期25卷 195-200页

作者： GROmBALL F müLLER j Department of mikrosystemtechnik Technische Universitt Hamburg-Harburg Hamburg 21073 Germany

A line shaped electron beam recrystallised polycrystalline silicon film on the low cost substrate was investigated for the use of the solar cell absorber. The applied EB energy density strongly influences the surface morphology of the film system. Lower EB energy density results in droplet morphology and the rougher SiO2 capping layer due to the low fluidity. With the energy increasing, the capping layer becomes smooth and continuous and less and small pinholes form in the silicon film. Tungstendisilicide (WSi2) is formed at the interface tungsten/silicon but also at the grain boundaries of the silicon. Because of the fast melting and cooling of the silicon film, the eutectic of silicon and tungstendisilicide mainly forms at the grain boundary of the primary silicon dendrites. The SEm-EDX analysis shows that there are no chlorine and hydrogen in the area surrounding a pinhole after recrystallization because of outgassing during the solidification.

关键词： polycrystalline silicon film solar cell recrystallization energy surface morphology outgassing

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迈克尔·K的生活和时代

作者： (南非)库切(Coetzee j.m.)