吾诗已成：我的读书生活

两篇论文：

(1) Discrete element modelling of pebble beds: With application to uniaxial compression tests of ceramic breeder pebble beds
Author(s): GAN, YX; KAMLAH, M
Source: JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
Volume: 58 Issue: 2 Pages: 129-144 Published: FEB 2010
DOI: 10.1016/j.jmps.2009.10.009

(2) Thermo-mechanical modelling of pebble bed-wall interfaces
Author(s): GAN, YX; KAMLAH, M
Source: FUSION ENGINEERING AND DESIGN
Volume: 85 Issue: 1 Pages: 24-32 Published: 2010
DOI: 10.1016/j.fusengdes.2009.05.003

就是之前这篇文章里说的那两篇论文。经过那么漫长的评审……

看到今天IJSS（International Journal of Solids and Structures, 国际固体和结构学报）上列出声明，提及一篇中国学者的文章被主编移除。

声明中提到移除文章的原因如下，一篇由石家庄铁道学院和同济大学三位学者合写的文章在２０１０年２月１３日上线，但发现与这几位作者之前发表的四篇论文有明显相似。被自己“抄袭”的论文在２００７年分别发表在IJSS（国际固体和结构学报）和JAM（应用力学学报）上。另外提到，被“抄袭”的几篇论文又与更早前发表的其它论文（相同作者）类似。

虽然是自己抄自己的，这样制造论文本身是可以写个程序完成的，完全就是嵌套循环。问题在于，这样的论文如何可以通过专业评审人的评审？主编也在声明相应最后做了道歉。

声明在下面：

REMOVED: Multiple scattering of flexural waves from two cutouts in a semi-infinite thin plate

Xue-Qian Fang^{a, b}, Chao Hu^b and Dao-Bin Wang^a

^a Department of Engineering Mechanics, Shijiazhuang Railway Institute, Shijiazhuang, Hebei 050043, PR China

^b School of Aerospace Engineering and Mechanics, Tongji University, Shanghai 200092, PR China

Available online 13 February 2010.

This article has been removed at the request of the authors and/or the Editor-in-Chief. Please see Elsevier Policy on Article Withdrawal http://www.elsevier.com/locate/withdrawalpolicy.

Reason: This article has been retracted at the request of the Editors-in-Chief as the authors have plagiarized parts of an unpublished discussion article submitted to the Journal of Applied Mechanics. This article also contains significant similarity with parts of text, written by the same author(s), that have appeared in Int. J. Solids Struct., 44 (2007), pp. 6987–6998, J. Appl. Mech., 74 (2007), pp. 382–387, Int. J. Solids Struct., 44 (2007), pp. 436–446 and J. Appl. Mech., 74 (2007), pp. 916–922. Furthermore, some of these articles contain significant parts of text that appear in additional papers by the same author(s) which have been published in these and other journals.

One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not appeared in a publication elsewhere. Re-use of any data should be appropriately cited. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and we apologize to readers of the journal that this was not detected during the submission process.

原文在这里 doi:10.1016/j.ijsolstr.2010.01.023。

这是一句中国的俗语，今天的Nature上就有一篇文章“证实”了这一说法。

这篇文章的题目是 Foot strike patterns and collision forces in habitually barefoot versus shod runners Nature 463, 531-535 (28 January 2010)，链接在这里。文章比较了光脚跑步和穿鞋跑步习惯上的区别，一般来说穿鞋的跑步者习惯用后脚掌着地，而光脚的喜欢用前脚掌着地（下左图）。对于冲击力来说，不同的脚掌着陆方式带来不同的响应（下右图）。看来对于保护关节来说，习惯光脚跑步还是很有帮助的。

文章英文摘要：

Humans have engaged in endurance running for millions of years1, but the modern running shoe was not invented until the 1970s. For most of human evolutionary history, runners were either barefoot or wore minimal footwear such as sandals or moccasins with smaller heels and little cushioning relative to modern running shoes. We wondered how runners coped with the impact caused by the foot colliding with the ground before the invention of the modern shoe. Here we show that habitually barefoot endurance runners often land on the fore-foot (fore-foot strike) before bringing down the heel, but they sometimes land with a flat foot (mid-foot strike) or, less often, on the heel (rear-foot strike). In contrast, habitually shod runners mostly rear-foot strike, facilitated by the elevated and cushioned heel of the modern running shoe. Kinematic and kinetic analyses show that even on hard surfaces, barefoot runners who fore-foot strike generate smaller collision forces than shod rear-foot strikers. This difference results primarily from a more plantarflexed foot at landing and more ankle compliance during impact, decreasing the effective mass of the body that collides with the ground. Fore-foot- and mid-foot-strike gaits were probably more common when humans ran barefoot or in minimal shoes, and may protect the feet and lower limbs from some of the impact-related injuries now experienced by a high percentage of runners.

相关的英文报道。

在今天出版的Science，应该是2009年最后一期了。

T. J. Rupert, D. S. Gianola, Y. Gan, K. J. Hemker. Experimental Observations of Stress-Driven Grain Boundary Migration.

Science 18 December 2009:
Vol. 326. no. 5960, pp. 1686 - 1690
DOI: 10.1126/science.1178226

讨论的是对于晶体界面在不同应力状态下迁移的实验验证。文章链接在这里。是和别人合作写的东西，另外三个现在分别在MIT、Penn、和JHU。做实验和模拟花了不少时间，今年年中投稿以后经历了异常痛苦的审稿过程，来回多次，争论激烈，终于知道在那里发篇文章不易。这次合作而已，不是主打，倘使后者，估计太难太难。以后有空来写写具体过程吧，三言两语说不完。

可惜的就是这一期的封面（右图），实在不是想象的那种……

总是觉得Science和Nature是科普期刊，很多细节没有谈论，很多fancy的结果没有显示，例如下图是个更复杂的计算结果，讨论起来太困难，只能省略了。不过有打算写后续的文章，当然是针对专业期刊的。

最近文章里的插图。做实验的人写的文章，我帮着算了应力。算出来的云图比较有趣，就像冬天里的一把火。文章投出去，给同是做实验的评审人一看，那位就问“插图里着火的地方”是什么意思。

我们解释了半天，写了大半页回答。到主编那里，人家说我们这是科普期刊，你们写这么专业还有公式，谁会看，直接删了……