摘要：
The anti-competitive effect of vertical integration is a main issue discussed in antitrust field. Based on the characteristics of Chinese aluminum industry and the vertical merging behavior of Chinalco, this paper discusses the anti-competitive effect of forward integration by a two-phase game model with upstream monopoly firms. The result shows that vertical integration has obvious foreclosure effect on the other downstream independent firms when Chinalco merged with downstream aluminum firms. But, this effect became weaker when the monopoly degree of Chinalco in upstream market is reduced. The asymmetry of entrance and exit barriers of aluminum causes the market transmission mechanism of up/down-stream prices out of work, which deteriorates the destinies of aluminum firms further. The foreclosure effect and the failure of transmission mechanism supply opportunities for Chinalco to merge aluminum firms. The long-term goal of Chinalco's vertical integration is to control scarce bauxite resources as far as possible and to use the anti-competitive effect of upstream monopoly to form the monopolistic advantage on the deep processing of aluminum products.
期刊：
Proceedings of SPIE - The International Society for Optical Engineering,2009年7495 ISSN：0277-786X
通讯作者：
Wei, L.(weilongsheng@163.com)
作者机构：
[Sang, Nong; Wang, Dengwei; Wei, Longsheng; Wang, Yuehuan] Institute for Pattern Recognition and Artificial Intelligence, Huazhong University of Science and Technology, Wuhan 430074, China;[Wang, Fang] Orient Science and Technology College, Hunan Agriculture University, Changsha 410128, China
通讯机构：
Institute for Pattern Recognition and Artificial Intelligence, Huazhong University of Science and Technology, China
会议名称：
MIPPR 2009: Automatic Target Recognition and Image Analysis
会议时间：
Yichang, China
会议论文集名称：
MIPPR 2009: Automatic Target Recognition and Image Analysis
摘要：
Image compression is one of important processing techniques in visual salient object detecting. This paper proposes a model of image compression including visual attention and encoding of image. For a given image, salient regions are detected by visual attention; salient sizes are acquired by calculating feature difference between known location and periphery regions. In order to achieving variable resolution image compression, various compression ratios are adopted according to the saliency order from high to low. Original resolution is retained in the first salient region; the lowest resolution is applied in the inapparent salient regions and the middle resolution is decided by the saliency order from high to low. By this method, we achieve variable resolution image compression by the model of visual attention. Experimental results indicate that the model of image compression not only can achieve high compression ratio in total image but also can keep high resolution in salient regions and the quality of compressed image decreases as compression ratio increases. This method presents a new model for image compression.
会议名称：
2009 Conference on the Key Technology of Horticultural Produce(2009园艺生产关键技术学术会议 KTHP 2009)
会议时间：
2009-04-11
会议地点：
北京
会议论文集名称：
2009 Conference on the Key Technology of Horticultural Produce(2009园艺生产关键技术学术会议 KTHP 2009)论文集
关键词：
Golden section;Plant hormones;Drainageline;Water-saving cultivation
摘要：
The correlation between biomass and drainage line was behaved by the effect of water on root growth. The result showed that a ratio of aeration part over the drainage line up to 0.6 kept more than 60 percent of roots being in a good aeration condition for a long duration, resulted in the increasing of the CTK and IAA concentration and decreasing of the GA and ABA concentration in roots, and promoted the emergence of new roots and branches. Regression analysis of biomass showed that there was a production peak when the drainage line was near to the golden section. The theory of The Golden Drainage Cultivating Method and its technique were summarized through the experiments on kinds of plants for several years, and its key factor was that the drainage line for plant should be determined at the golden section of roots from top to bottom.
