Science & Technology Review CONTENTS	Vol.26  No.1  2008	Semimonthly (Established 1980)
	(Sum No. 247)       This issue published on 13. Jan., 2008
New Year Message The Editoral Department of S&T Review
Forward
3  Long Period of Exploration and Fruitful Harvest GAN Zizhao
News Round
9  Having the Courage to Explore and Face Failure HUANG Yongming
Suggestion
10  What China Needs Most Now is "Disruptive" Innovation
Special to S&T Review
19  Important Advances of Science, Technology and Engineering in China in 2007 SU Qing
Special Issues
28  Fabrication and Superconducting Properties of MgB2 Wires with Amorphous Carbon Doping by In-situ Powder-in-tube Method YAN Guo, WANG Qingyang, LIU Guoqing, et al.
32  Study on YBCO Superconducting Tape of 10 m in Length GU Hongwei, YANG Jian, LIU Huizhou, et al.
38  Simulation and Experimental Study on Power System Transient Stability with Supercinducting Fault Current Limiter YE Ying, ZHANG Zhifeng, ZHAO Caihong, et al.
43  Excitation System of Variable Speed Constant Frequency Wind Power Generator Based on SMES SHI Jing, TANG Yuejin, CHEN Lei, et al.
47  Application of SMES to Improve Power Quality CAO Bin, JIANG Xiaohua
53  Superconducting Power Technology LIN Liangzhen, XIAO Liye
Articles
59  Videometric Research on the Digital Photos of South China Tiger LI Lichun, ZHANG Xiaohu, LIU Xiaochun, et al. Abstract: The photos of a South China tiger have attracted a wide interest among scientists and scholars since they were released in October 2007. Both pros and cons of the tiger photos have so far made only qualitative analyses on whether the photos of the South China tiger are based on a real or fake tiger. This paper carries out three-dimensional measurements and reconstructions of the South China tiger from the photos using the videometrics, and also quantitative analyses on the similarity and difference of details of the tiger in the photos and that in the poster. Then the results of quantitative analysis are presented. It is unfeasible to reconstruct the tiger with high precision by conventional methods, considering the small viewpoint changes of photos, the low resolution of the tiger in the photos and the blur of image. To achieve a precise enough reconstruction of the tiger for its 3D recognition, an approach is employed, which computes multi-view geometry parameters from the feature points in the whole tiger photos, but reconstruct the tiger using local features. The results show that all the points on the face, trunk and legs of the tiger reconstructed from photos are nearly on a same plane which is parallel to the image plane. The experiments of simulating scenes have confirmed the reliability of the reconstruction. At the same time, the affine rectification and contrast analysis are made on the tiger images in the photos and the poster tiger, and the similarity coefficient is 0.998 6. It is shown that the main texture framework and contour of the tiger in the photos agree well with those of the poster tiger. In addition, the difference of eyes of the tigers in the photo and the poster is analyzed. Keywords: videometrics; 3D reconstruction; South China tiger; digital photos; affine transform
68  Nutrient Management in Human Food Chain: A Challenge for Sustainable Development of China MA Wenqi, ZHANG Fusuo Abstract: The nutrient flux and its management are very important for sustainable development of a society. Based on recent research results, the significance and problems of the nutrient management within the whole food chain for sustainable development of China in the 21st century are analyzed and countermeasures of optimizing food chain nutrient management are suggested. The results show that with the increase of population, with development of economy and improvement of human life, the nutrient fluxes in the food chain will significantly increase and, as a result, the nutrient emission to environment will also significantly increase and the resources for fertilizer production will become exhausted. However, the current strategies of nutrient management in China are not adequate, which will pose a great challenge for China's sustainable develop- ment. Therefore, some countermeasures are suggested, such as 1) optimizing the diet structure to decrease excessive nutrient consumption, 2) increasing the efficiency of nutrient use and nutrient recycling by improving the nutrient management policies and technologies, and 3) strengthening the research to develop new policies and techniques of nutrient management in food chain system. Keywords: nutrient; food chain; sustainable development
Perspectives
74  A Contest against a Guess About Mersenne Prime Distribution ZHANG Sibao
Reviews
76  Size Effects in Metal Microforming Processes and Related Numerical Modeling Techniques LI Lei, XIE Shuisheng, MI Xujun, et al.
80  Research Progress on Multi Functional Titanium Alloy: A Gum Metal YE Wenjun, MI Xujun, HUI Songxiao
85  Notes on Reviews in Chinese Science Abstracts(Chinese Edition)
Science Reports
86  The 5th Selection of Outstanding Papers of CAST Announced The Evaluation Committee of Outstanding Papers of CAST
94  The Prospects of Climate Change Research in the Next Few Years
Commentary
96  Wu Wenjun: From Combining Theory and Computation to Machine Proving WANG Yusheng
97  Can I Eat My Cake and Have It at the Sametime ? —On the Relationship Between Scientific Research and Popular Science WU Yishan
98  Listening to the Irregular Heartbeats of Prime Number ZHONG Chongheng
99  Books Appraisal
Editor-in-chief's Thoughts
89  How to Pound the Foundation of Postgraduates Successful Research Career (XVII) FENG Changgen
Special Columns
8  Cover Story
11  Voice of Scientific Communit
12  Half-month News Briefs
14  International Journal Highlights
15  Domestic Journal Highlights
16  Scientific Community Briefs
18  Guidance for Contributors to Science and Technology Review
67  Correspondence: The Misconduct
100  Readers' Letters
102  Digest of Chinese Newspapers and Journals
103  Events
104  Enterainments
106  Tips for Ph.D Students and Postdoctoral Fellows The Editoral Department of S&T Reviews
107  Carrer
110  Global Jobs