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Zhang L.,Beijing Jiaotong University | Zhang S.,Beijing Jiaotong University | Liu G.,Renming University of China | Xia T.,University of Wollongong
Journal of Information and Computational Science | Year: 2010

In this paper, we study the local influence analysis of LIU estimate in the linear models. Using the method proposed by Shi [2], the local influence of LIU estimate in the variance disturbance model and two variables disturbance models are investigated respectively. Furthermore, we give the generalized Cook distance to assess the extent of influence, and illustrate the efficiency of the proposed method by the numerical example. Copyright © 2010 Binary Information Press.

Qiu Y.,Northwestern University | Cheng X.,University of Hong Kong | Ching W.-K.,University of Hong Kong | Jiang H.,Renming University of China | Akutsu T.,Kyoto University
Proceedings - 2015 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2015 | Year: 2015

Boolean network (BN) is a popular mathematical model for revealing the behavior of a genetic regulatory network, and observability plays a vital role in understanding the underlying network feature. However, the observability of attractor cycles, which is an interesting and important problem, has not been addressed in the literature. In this paper, we first proposed a novel problem on attractor observability in BNs. Identification of the minimum set of consecutive nodes can be used to determine uniquely the attractor cycle from the others in the network. We then develop a linear-time algorithm to identify the desired set of nodes. The proposed approaches are demonstrated and verified by numerical examples. The computational results are given to illustrate both the efficiency and effectiveness of our proposed methods. © 2015 IEEE.

Zhang C.,China Information Technology Security Evaluation Center | Li F.,China Information Technology Security Evaluation Center | Liang B.,Renming University of China
Qinghua Daxue Xuebao/Journal of Tsinghua University | Year: 2010

The trusted process mechanism is an important part of the operating system security mechanism, but there is no uniform definition of the trusted process and there are some limitations in understanding its fundamental properties. In this paper, the trustworthiness of a trusted process is discussed in terms of privilege, data-operated integrity, functional and logic correctness, self-integrity, availability and trusted interactions. A trusted process definition is then given which summarizes the fundamental properties of a trusted process as a theoretical foundation for researching and enforcing the trusted process mechanism. A prototype of a trusted process mechanism is implemented in a secure operating system based on Linux, with the trustworthiness of the trusted process assured in many ways to improve and extende the original trust mechanisms in Linux.

Bi Y.,China Safety Science and Research Institute | Bi Y.,China University of Mining and Technology | Fu Z.,Renming University of China
WIT Transactions on Information and Communication Technologies | Year: 2014

As the institutional reform further deepened in China, game theory plays an important role in economic research and economic policy choices. Simultaneously it has a significant impact on government action and making public policy. Based on the principal-agent theory, this paper established the principal-agent model of local governments and enterprises, analyzed the choice trend of manufacturing enterprises under dual tasks of safety and production, discussed the incentives mechanism of enterprise security production, and provided the security incentive constraints policy of government with the theoretical basis. © 2014 WIT Press.

Bu M.,Nanjing University | Zhang S.,Nanjing University | Liu Z.,Nanjing University of Information Science and Technology | Zhang J.,Renming University of China
Economic Computation and Economic Cybernetics Studies and Research | Year: 2012

China's low regional integration has drawn ever-increasing attention. However, the effects of the Internet as a representative of information and communication technology have largely been ignored. To fill this research gap, the current study seeks to clarify the relationship between Internet diffusion and regional integration in China. An approach measuring regional integration is constructed using the retail price index data of various commodities from 2001 to 2009. The results of the panel data regression suggest that the Internet plays a positive, significant role in regional integration in controlling the economy level, governmental control, and international openness. These findings are robust, maintaining consistency across three measures of Internet variables and several alternative model specifications.

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