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艺术中心区,去还是不去?

东方艺术 2007年第5期 128-133页

作者： clem Hitchcock 王晓燕

近三十年来,有关艺术家和艺术中心区之间关系的讨论变得多元化,城市数量的增加可能适当地限制了全球性艺术中心的产生。近年举办的年度业界艺术盛事和双年展的数字以指数上升,再加上如今网络上的博客、聊天室和互动式网上画廊数量的迅... 详细信息

近三十年来,有关艺术家和艺术中心区之间关系的讨论变得多元化,城市数量的增加可能适当地限制了全球性艺术中心的产生。近年举办的年度业界艺术盛事和双年展的数字以指数上升,再加上如今网络上的博客、聊天室和互动式网上画廊数量的迅速增加使得如今对艺术中心的定义愈加困难,也对新涌现出的艺术家的发展产生了影响。我们针对这一现象,向世界各界知名的评论家、艺术家、策展人询问了以下的三个问题: a．依您所见,一个居住在艺术中心城市外围地区的艺术家是否要比那些居住在艺术中心城市(例如纽约,伦敦,莫斯科,北京)的艺术家处于不利地位,为什么? b．您知道哪些住在外围的艺术家,他们的作品已经受到了好评并被公众所接受? c．世界全球化进程以及互联网在某种程度上是否改变了公众普遍认为的隔绝与外围相连的观点?

关键词：艺术家艺术界中心区画廊收藏家策展人

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量子密码及其“不可破译性”

山西大学学报(哲学社会科学版) 2009年第2期32卷 18-22页

作者：范莉山西大学哲学社会学学院

在21世纪人类跨入信息时代之际,如何能够实现保密通信的不可破译性是现代通信技术面临的重要问题,也是哲学工作者需要思考的重要问题。量子密码术在保证信息的不可破译性方面已经取得重要进展。通过对非量子密码术和量子密码术两个阶段... 详细信息

在21世纪人类跨入信息时代之际,如何能够实现保密通信的不可破译性是现代通信技术面临的重要问题,也是哲学工作者需要思考的重要问题。量子密码术在保证信息的不可破译性方面已经取得重要进展。通过对非量子密码术和量子密码术两个阶段分别以科学的和哲学的解析,文章认为,古代密码术具有弱不可破译性,发展到经典密码术阶段,密码术在理论和实践上呈现强不可破译性,而量子密码术则显示出不可破译性,逐渐趋向"绝对不可破译性"。

关键词：密码术量子密码不可破译性

Microstructure and Mechanical Behaviour of Proton-and Ion-irradiated Ll_2 Intermetallic Compounds

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Journal of Materials Science & Technology 1994年第4期10卷 235-245页

作者： F. C. Chen and A .J.Ardell (Dept. of Materials Science and Engineering, University of california, Los Angeles, ca 90024-1595, USA) Univ of california Los Angeles United States

The results of mechanical testing and transmission electron microscopy on the ordered intermetallic Ll2 compounds1Zr3Al, Ni3Al, Ni3Si and Ni3Ge after irradiation with protons or heavy ions at high or low tem peratu re are presented and discussed. Using a minjaturjzed disk-bend test. it was found that proton irradiation of Zr3Al. Ni3Al and Ni3Si raises their yield strength :a single test of Ni3Ge shows no effect on the fracture stress of this brittle intermetallic The Vickers microhardness of all four alloys is raised by proton irradiation. The irradiations cause all the alloys to disorder. the extent of which is dependent on irradiation temperature Microstructural defects are produced by the irradiations Some exhibit strain-field contrast under dynamic two-beam diffracting conditions. Other distinct defect clusters are imaged only in dark-field using su perlattice reflections, These latter defects are discussed in the context of current arnorphization models. The strength increase of Zr3Al, Ni3Al and Ni3Si is attributed to a combination of disordering and strengthening from defects. The lack of an effect of irradiation on the fracture stress of Ni3Ge. in which voids were observed, requires further experiments

关键词： Ni Si Zr Microstructure and Mechanical Behaviour of Proton-and Ion-irradiated Ll2 Intermetallic Compounds Figure

On Ohtsuki's Invariants of Integral Homology 3-Spheres

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Acta Mathematica Sinica,English Series 1999年第3期15卷 293-316页

作者： Xiaosong Lin Zhenghan Wang Department of Mathematics, University of california, Riverside, ca 92521, U. S. A.Department of Mathematics, Indiana University, Bloomington, IN 47405, U. S. A. Department of Mathematics, University of california, La Jolla, ca 92093, U. S. A. Department of Mathematics University of California Riverside U. S. A. Department of Mathematics Indiana University Bloomington U. S. A. Department of Mathematics University of California La Jolla U. S. A.

We provide some more explicit formulae to facilitate the computation of Ohtsuki’s rational invariants λn of integral homology 3-spheres extracted from Reshetikhin-Turaev SU（2） quantum invari- ants. Several interesting consequences will follow from our computation of λ2. One of them says that λ2 is always an integer divisible by 3. It seems interesting to compare this result with the fact shown by Murakami that λ1 is 6 times the casson invariant. Other consequences include some general criteria for distinguishing homology 3-spheres obtained from surgery on knots by using the Jones polynomial.

关键词： Finite type invariant Fermat limit Homology sphere Surgery formula

Finding the Perfect Fit

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Beijing Review 2021年第25期64卷 48-48页

作者： Nkemek-nti Umoren Nanchang University

My earliest memories of settling in China upon arrival are related to shopping for clothes. Before leaving home, my mother packed my bags with thick, warm clothing, given that China’s weather wasn’t as warm compared to Nigeria’s. But in October when I got here, the weather was warmer than my outfits were suitable for, and there was a need for change.

关键词： weather Perfect shopping

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用计算机对电力保护装置进行静态和动态试验

继电器译丛 1989年第3期 96-102页

作者： clem.,H 郑永霞

The Decisive Moment as an Event in Photographic Discourse

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Sino-US English Teaching 2015年第12期12卷 984-991页

作者： Leny Pimenta Dionéia M. Monte-Serrat Monteiro Lobato-COC High School Franca Brazil University of So Paulo Ribeiraio Preto Brazil

We propose using the concept of decisive moment in order to deconstruct the obvious ideological effects found in discourse. The subject is constituted in enunciation, and its polysemic discourse clashes with the transparency of meaning. According to Pêcheux （1988）, the contradictions in discourse simultaneously establish regularity and instability of meanings, leading it to misunderstanding, to the event. Photography destabilizes that which is already formulated and brings out that which is new, the unexpected meaning, the decisive moment. We analyze this process in the picture by Sebastiao Salgado---＂The cradle of inequality lies in the inequality of the cradle＂. （caPES-BEX 4394/10-0, FAPESP 09/54417-4, CNPq.）

关键词： discourse ideology subject event decisive moment

Next-generation lithography for 22 and 16 nm technology nodes and beyond

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Science China(Information Sciences) 2011年第5期54卷 959-979页

作者： WU Banqiu Applied Materials, Inc., Building 81, M/S 81311, 1285 Walsh Ave, Santa Clara, ca 95050, USA 1. Applied Materials Inc. Building 81 M/S 81311 1285 Walsh Ave Santa Clara CA 95050 USA

In this paper, next-generation lithography (NGL) for the 22 and 16 nm technology nodes and beyond is reviewed. A broad range of topics, including history, technologies, critical challenges, and the most plausible candidates are discussed. The 22 and 16 nm technology nodes rely on NGL. NGLs have been extensively studied. Because of technological issues, the semiconductor industry has stopped pursuing several NGLs, such as X-ray proximity lithography, ion projection lithography, and scattering with angular limitation projection electron lithography. Currently, the primary candidate technologies are extreme ultraviolet lithography (EUVL), maskless lithography (ML2), and nanoimprint lithography (NIL), with EUVL being the leading candidate. Since EUVL was first proposed in 1988, many studies have been conducted. Currently, there is no "show stopper" for EUVL. Moreover, challenges are present in almost all aspects of EUVL technology. Almost all primary semiconductor manufacturing companies plan to implement commercial pre-production step-and-scan exposure tools in 2011. However, EUVL power at an intermediate focusing level has not yet met the volume manufacturing requirements. EUVL resists have been significantly improved recently, but there is still a critical need to meet requirements on resolution, line width roughness, and sensitivity. Creating a defect-free EUVL mask is another obstacle to the application of EUVL. ML2 and NIL, like EUVL, have also undergone significant progress recently, but throughput, defect control, and cost remain the critical impediments for practical application.

关键词： lithographic NGL XPL IPL NIL

Assessment of CO_(2)storage prospect based on physical properties of Rio Bonito Formation rock units

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Energy Geoscience 2024年第1期5卷 321-330页

作者： Richardson M.Abraham-A Stephanie San Martín cañas Isabella F.S.Miranda Colombo C.G.Tassinari Institute of Energy and Environment(IEE) University of São Paulo(USP)Brazil Research Centre for Greenhouse Gas Innovation(RCGI) University of Sãao Paulo(USP)Brazil

The physical properties of the rock units associated with the Rio Bonito Formation are presented in this study with the focus on modelling reservoir quality based on petrophysics-derived parameters to evaluate CO_(2)storage *** involves the modelling of the reservoir depths,thicknesses,flow zone indicators(FZI),and effective permeability(Keff)and presenting the CO_(2)storage efficiency factors peculiar to the rock units of the study *** results presented by this study for the stated objectives are not quite common in the *** values range from 200 mD to higher than 2000 mD,and FZI values are generally above 1.0 mm and up to 13.0 mm within the portions covered by the drilled *** sandstone units recorded are up to 20 m thick in some *** Keff and FZI models indicate the sandstone reservoirs as permeable units to support the injection and circulation of CO_(2)within the potential reservoir units of the Rio Bonio Formation across São Paulo *** from some points in the southeastern part of the study location,where the Rio Bonito are delineated at depths less than 800 m(minimum CO_(2)storage depth based on best practices),other portions are deeper,ranging from 950 m to 3500 ***-bedded layers will affect the integrity of the rocks as CO_(2)storage tanks or reservoir seals/traps/overburden within the *** bed thicknesses are up to 20 m in some ***,hybrid CO_(2)reservoir units are feasible,especially in portions where thin siltstone layers are sandwiched between sandstone units to provide considerable thicknesses based on CO_(2)storage *** current study shows that useable areas considering reservoir thickness,depth,and other physical qualities will significantly control the CO_(2)storage efficiency of the study *** studies featuring a detailed geophysical exploration of the site to confirm the availability and saturations of preexisting fluid(hydrocarbon and water)are encouraged

关键词： Rio Bonito Effective permeability Fluid transmissibility CO_(2)storage prospect Reservoir quality Overburden integrity Flow zones