Efficacy assessment of independent severe accident mitigation measures in OPR1000 using MELCOR code

In-vessel and ex-vessel mitigation strategies have been revisited to improve the severe accident management (SAM) for operating nuclear power plants. Because independent mitigation measures tend to produce positive and adverse effects simultaneously, it is necessary to investigate the efficacy of individual measures by means of proper quantification. Thus, in the present study we investigated the overall efficacy of existing SA mitigation strategies prepared for the Optimized Power Reactor 1000 MWe (OPR1000) by means of MELCOR 1.8.6 code. The numerical evaluation showed that the Mitigation-01, feeding water into the steam generators, is the most effective among the other mitigations. In addition, Mitigation-02, reactor coolant system depressurization, could not mitigate the SA sufficiently when applied individually. Among the four ex-vessel mitigation strategies, execution of containment spray was effective in removing most of the aerosol fission product but also intensified hydrogen combustion by increasing the partial hydrogen pressure owing to steam condensation. Mitigation-07, operation of passive autocatalytic recombiners (PARs), could reduce the hydrogen concentration, though the catalytic reaction was predicted to increase the containment pressure. In conclusion, this study suggests that mitigation measures should be carefully selected, and that counteracting measures should be prepared to minimize potential adverse effects.     

Shapiro不等式的指数推广

利用Holder不等式，Young不等式和幂平均不等式建立了Shapiro不等式的指数推广形式．所得结果改进和推广了最近文献的一些相应结果．     

Crazy Quilt Queens

Spreading out over almost 120 square miles on the northwest corner of Long Island, across the East River from Manhattan, Queens is physically the largest borough in the City of New York, and the second most populous and most ethnically diverse county in the us. Its 2.2 million residents come from 81 different countries, and nearly half are foreign-born. Writer Jayne Merkel and photographer Julian Olivas describe the architectural diversity of Queens - a combination in which architectural and ethnic characteristics rarely coincide. Most of the borough's residents and institutions occupy structures built by those that came before them. Queens is in almost perpetual flux. Copyright © 2005 John Wiley & Sons, Ltd.     

The Ghost of Humanism: Rethinking the Subjective Turn in Postwar American Photography

This article examines the use of shadow, blur, graininess, and reflection in the work of the postwar photographers Robert Frank, William Klein, and Ralph Eugene Meatyard as a response to the rhetoric of Cold War containment. In contrast to the more comforting images in Edward Steichen’s popular exhibit The Family of Man, which sought to downplay Cold War anxieties, the photographs of Frank, Klein, and Meatyard challenged viewer expectation by presenting human figures in varying states of disintegration and disappearance. The term ‘subjective’ has long been used to describe a return to personal and private concerns during the postwar years, but discussion has focused mainly on the subjectivity of the artist rather than the viewer. By challenging the sanctity of the human figure, Frank, Klein, and Meatyard force viewers to confront such difficult images and, in the process, re-examine the fears and anxieties that lay dormant during the tense years of the early Cold War.     

美国尤金岛油田三角洲复合体的地震地层学、岩相结构和油藏特征

本文介绍的尤金岛油田GA层段的产层特征和层序地层学综合研究成果表明,层段内油藏的分布主要受位于海泛面之下层段顶部的上倾岩相(三角洲、河口坝、三角洲前缘砂)控制,而与层段底的层序底界面无关;GA层段顶部的地震振幅异常呈分散块状(河口砂坝)和弯曲带状(分流河道间三角洲前缘);地震振幅值与产层特征间有较好的对应关系,即高产井均位于高振幅值区。     

留美化工专家顾毓珍教授与生物燃料研究

生物燃料研究领域已成为目前国际上一个热点研究领域。本文介绍了我国化学工程学会的主要创始人之一的留美化工专家、已故华东理工大学顾毓珍教授在抗日战争期间在生物燃料研究领域所做出的开创性贡献。     

基于正态分布特性的太阳日总辐射数据细化

介绍了一种气候学方法计算研究地区太阳日总辐射。利用太阳辐射观测站观测到的数据拟合出代表周边地区的每日太阳辐射量变化趋势,并与该地区太阳日总辐射量相结合,得出每目各整点时刻间的太阳辐射量分布,为研究地区的光伏发电规划奠定基础。美国尤金地区的算例结果验证了本文所提方法的有效性。     

A. Eugene Shapiro: Gold Medal Award for Life Achievement in the Practice of Psychology.

The American Psychological Foundation (APF) Gold Medal Awards recognize distinguished and enduring records of accomplishment in four areas of psychology. The 2005 recipient of the Gold Medal Award for Life Achievement in the Practice of Psychology is A. Eugene Shapiro. Dorothy W. Cantor, president of the APF, will present the Gold Medal Awards at the 113th Annual Convention of the American Psychological Association on August 19, 2005, at 4:00 p.m. Members of the 2005 APF Board of Trustees are Dorothy W. Cantor, president; Norman Abeles, secretary; Charles L. McKay, treasurer; Elisabeth R. Straus, executive vice president/executive director; Norman Anderson; Camilla Benbow; Patrick H. DeLeon; Ronald E. Fox; William C. Howell; Steven E. James; Joseph D. Matarazzo; Martin E. P. Seligman; Robert J. Sternberg; and Philip G. Zimbardo. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Hodgetts+Fung

Craig Hodgetts and Hsin-Ming Fung are inspired by the ‘diverse and eclectic character’ of their adopted city of Los Angeles. As Denise Bratton explains, LA seeps into the very design process of their practice as much as it informs the character of their work. This is reflected in their dynamic scenographic approach, their bent for canny improvisation, and their attention to new materials and technologies. Copyright © 2005 John Wiley & Sons, Ltd.     

Biomimicry versus Humanism

Joe Kaplinsky takes issue with ‘biomimicry’ and the idea that nature rather than mechanical solutions is the key to unlocking architecture. He argues that biological language and analogies diminish the real achievement of designers. He calls for a humanist sense of what architecture and engineering mean in the world.