检索结果-南通市图书馆

A self-cited pixel summation based image encryption algorithm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2017年第1期26卷 131-138页

作者： Guo-Dong Ye Xiao-Ling Huang leo Yu zhang Zheng-Xia Wang Faculty of Mathematics and Computer Science Guangdong Ocean University Zhanjiang 524088 China College of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China Department of Electronic Engineering City University of Hong Kong Kowloon Tong Hong Kong China College of Information Science and Engineering Chongqing Jiaotong University Chongqing 400074 China

In this paper, a novel image encryption algorithm is presented based on self-cited pixel summation. With the classical mechanism of permutation plus diffusion, a pixel summation of the plain image is employed to make a gravity influence on the pixel positions in the permutation stage. Then, for each pixel in every step of the diffusion stage, the pixel summation calculated from the permuted image is updated. The values from a chaotic sequence generated by an intertwining logistic map are selected by this summation. Consequently, the keystreams generated in both stages are dependent on both the plain image and the permuted image. Because of the sensitivity of the chaotic map to its initial conditions and the plain-imagedependent keystreams, any tiny change in the secret key or the plain image would lead to a significantly different cipher image. As a result, the proposed encryption algorithm is immune to the known plaintext attack（KPA） and the chosen plaintext attack（CPA）. Moreover, experimental simulations and security analyses show that the proposed permutationdiffusion encryption scheme can achieve a satisfactory level of security.

关键词： pixel summation image encryption algorithm intertwining logistic map gravity security

Margin Debt： Upcoming Trigger for a Bear Run？

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

China International Business 2015年第6期 56-57页

作者： leo zhang Deputy Editor in Chiefat Shanghai Daily

＂News related to any curb on margin debt could have a big impact on the market, as people conceive it as a signal of tightening.＂

关键词：保证金引发债务

Global Yuan Push Gains Currenc!

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China International Business 2012年第12期 21-23页

作者： leo zhang

China＇s initiative to internationalize ,the yuan is set to enter a new level, with the currency＇s strong perfor mance this year reviving yuan-backed offshore bond issuance and business start- ing to regain momentum in the Western Hemisphere. China Construction Bank Corp., the nation＇s No.2 lender by market value, in November became the first mainland com- pany to sell the offshore yuan-denominatedbond, better known as Dim Sum debt, in London, and plans to use the proceeds to develop its overseas yuan business.

关键词：中国建设银行人民币国际化债券创业股份贷款出售

Dwindling Interest,Dwindling Returns

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China International Business 2008年第4期 40-41页

作者： leo zhang

All four QDⅡ products launched by mutual funds last year under-performed their benchmarks in the fourth quarter.

关键词：中国证券市场基金 QFII

Government Incentives Unveiled to Bolster Equity Market

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China International Business 2014年第6期 48-50页

作者： leo zhang

China＇s efforts to boost the country＇s ailing capital market began a new rchapter after the State Council in May unveiled new plans to rev up market innovation and streamline administrative procedures.

关键词：股票市场奖励政府资本市场行政程序市场创新国务院

Jump-Starting the Market

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China International Business 2010年第10期 44-45页

作者： leo zhang

Chinese regulators are continuing expansion of a pilot program for margin trading and short sales launched in April in order to bolster liquidity and spur turnover in the lack- luster Chinese mainland stock market. Besides increasing the number of securities firms allowed to participate, regulators are also considering a proposal to set up intermediary agencies to lend money and securities to investors.

关键词：市场中国大陆证券公司监管机构监管部门中介机构保证金投资者

Steady Economic Policy for the Benefit of Domestic Consumption

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China International Business 2013年第1期 8-11页

作者： leo zhang

China＇s top leaders have drawn up a blueprint for the economy in 2013, which envisages sustaining the recovery by maintaining policy stability and bolstering domestic consumption to counter the lingering weakness in ... 详细信息

关键词：经济复苏消费政策稳定性国内效益领导人

Inside China＇s Sovereign Wealth Fund

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China International Business 2008年第8期 46-47页

作者： leo zhang

Lou Jiwei, head of the China Investment Corp, is standing up to a barrage of criticism, and in doing so providing a glimpse into an often opaque world

关键词：投资公司财富基金会中国经济发展

＂Go Global Speeds up＂

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China International Business 2011年第7期 46-47页

作者： leo zhang

Hong Kong＇s offshore yuan trade takes off in wake of weaker dollar and global slowdown

关键词：速度全球经济人民币美元