Authentication email has already been sent, please check your email box: and activate it as soon as possible.
You can login to My Profile and manage your email alerts.
If you haven’t received the email, please:
|
|
There are 20 papers published in subject: > since this site started. |
Results per page: | 20 Total, 2 Pages | << First < Previous 1 2 |
Select Subject |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
1. A Similar Interaction Model for Group Activity Recognition in Still Images | |||
Xiaobin Chang, Xiang Li, Yuting Mai, Wei-Shi Zheng | |||
Information Science and System Science 03 September 2014 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:This paper addresses the group activity recognition in the still image. We formulate an alternative discriminant contextual model on feature level. On the one hand, it mines the person-joint-context feature model, which describes the interaction of a focal person and its surrounding context. In the meanwhile, the surrounding context is featured with the relative pose, relative location and the scene background. On the other hand, a similar interaction model is formed to learn the interactive correlation between a focal person and its surrounding context. An optimization criterion is proposed to learn the similar interaction model. We show that the optimization problem can be optimized efficiently. Our experimental results show that the proposed model outperforms related works, even though temporal information is not available. | |||
TO cite this article:Xiaobin Chang, Xiang Li, Yuting Mai, et al. A Similar Interaction Model for Group Activity Recognition in Still Images[OL].[ 3 September 2014] http://en.paper.edu.cn/en_releasepaper/content/4607561 |
2. Dynamics Analysis in a Delayed Two-Species Competition Model with Harvest Effort and Nonlinear Intraspecific Regulation | |||
LIU Chao, WANG Xiao-Min, Yue Wen-Quan | |||
Information Science and System Science 08 May 2014 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:In this paper, a mathematical model is established to investigate interaction and coexistence mechanism of two-species competition ecosystem with nonlinear intraspecific regulation. The combined dynamic effects of maturation delay and harvest effort on population dynamics are discussed. Conditions for existence of three nonnegative boundary equilibria and a unique interior equilibrium are investigated. Positivity and boundedness of solutions are analytically studied. By analyzing associated characteristic equation, local stability of the proposed model around nonnegative boundary equilibrium and interior equilibrium is discussed, respectively. Furthermore, global stability of the nonnegative boundary equilibrium is investigated based on an iterative technique. By constructing an appropriate Lyapunov functional, global stability of the unique interior equilibrium is also discussed. Numerical simulations are carried out to show consistency with theoretical analysis. | |||
TO cite this article:LIU Chao, WANG Xiao-Min, Yue Wen-Quan. Dynamics Analysis in a Delayed Two-Species Competition Model with Harvest Effort and Nonlinear Intraspecific Regulation[OL].[ 8 May 2014] http://en.paper.edu.cn/en_releasepaper/content/4594689 |
3. Global Stability Analysis of a Nonautonomous Stage Structured Competitive System with Toxic Effect and Double Maturation Delays | |||
LIU Chao, LI Yuan-Ke | |||
Information Science and System Science 04 May 2014 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:In this paper, a nonautonomous stage structured two-species competitive system with toxic effect and double time delays is investigated due to maturation for two species, where toxic effect of toxin liberating species on nontoxic species is considered and theinhibiting effect is zero in absence of either species. Positivity and boundedness of solutions are analytically studied. By utilizing some comparison arguments, an iterative technique is proposed to discuss permanence of the species within competitive system. Furthermore, existence of positive periodic solutions is investigated based on continuation theorem of coincidence degree theory. By constructing an appropriate Lyapunov functional, sufficient conditions for global stability of the unique positive periodic solution are analyzed. Numerical simulations are carried out to show consistency with theoretical analysis. | |||
TO cite this article:LIU Chao, LI Yuan-Ke. Global Stability Analysis of a Nonautonomous Stage Structured Competitive System with Toxic Effect and Double Maturation Delays[J]. |
4. Featured Circular Profile for Vessel Thresholding | |||
Na Lu | |||
Information Science and System Science 30 September 2013 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:To analyze the characteristics of the blood vessels quantitatively is of great importance to the diagnosis of different diseases, e.g., stenosis, diabetic retinopathy, tumor and so on. However, the occurrence of imaging noise or illumination variation may include difficulty for image analysis, especially for accurate quantitative analysis. Therefore, more efficient algorithms for vessel image thresholding, segmentation or extraction have been studied. Nevertheless, these methods may still fail entirely in case of images with large noise or structural noise (such as spots that obscure and/or are brighter than vessels). To improve the algorithm performance on these issues, we propose a novel thresholding algorithm for vascular images by probing the polarity in the circular profiles (PCP) of image pixels. This can robustly distinguish tube-like objects from both cloud-like contaminations and structural noise. Extensive simulation studies based on multiple evaluation criteria suggest that the PCP algorithm typically has a superior performance over other representative approaches. Finally, we also demonstrate the satisfactory performance of the PCP method on real image data. | |||
TO cite this article:Na Lu. Featured Circular Profile for Vessel Thresholding[OL].[30 September 2013] http://en.paper.edu.cn/en_releasepaper/content/4560953 |
5. A quantitative assement approach of component security level | |||
Chen Jinfu,Huanhuan Wang | |||
Information Science and System Science 07 March 2013 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:The reliability and security of components block the development of component technology. An effective assessment approach of component security level can promote the development of component technology. This paper proposes a quantitative assessment approach of component security level. The steps of interface fault injection and the assessment framework are given. Meanwhile, a formula and algorithm about security level assessment are also given. The experiment results show that the approach not only can detect component security vulnerabilities effectively, but also can quantitatively assess the component security level. The future work is summarized and prospected in the end of the paper. | |||
TO cite this article:Chen Jinfu,Huanhuan Wang. A quantitative assement approach of component security level[J]. |
6. SMA: State Machine based Anti-spoofing | |||
LIU Bingyang,BI Jun | |||
Information Science and System Science 30 January 2013 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:IP spoofing makes many Internet security threats hard to prevent. This paper proposes SMA, a state machine based anti-spoofing method for AS-level IP source address prefix validation. In SMA, each ordered pair of ASes is associated with a secret state machine. The AS edge routers use the state machine to generate and verify the signatures periodically and automatically. The signatures are tagged into the outgoing packets at the source AS edge router, and verified by the edge router at the destination AS. The state machine can transit very fast, so that the signatures change very fast to prevent signature-replay attacks. Compared with SPM, this system is more secure and more practical. We designed the protocol based on IPv6, and implemented a prototype. Our experiment results based on the prototype show that this system can filter 99.99% of spoofing packets. And the computation overhead is less than 14%. SMA is more than a system, but a theoretical model with high flexibility. It can take either fast pseudo random number generator or secure hash function as its signature generation algorithm. So SMA can be applied in many end-to-end verification situations. | |||
TO cite this article:LIU Bingyang,BI Jun. SMA: State Machine based Anti-spoofing[OL].[30 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4514654 |
7. Structural evolution of eco-industrial systems basing on information principle | |||
CHAI Lihe,CHENG Hongxin,WANG Mengshu,LIU Min | |||
Information Science and System Science 08 May 2011 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:The eco-industrial system, blending together with environment, is an open dynamic complex system. Many investigations have been conducted from perspectives of complex systems theories during past years. However, since the poor understanding on the essence of complex systems, available theories have made little breakthrough in well essentially explaining the characteristics and the process of generation or evolution of eco-industrial system. In this paper, basing on a proposal for new informational reality in world, eco-industrial system, along with anything in the world, is treated not as a "hard system" preexisted somewhere, but a "soft system" resulted from an informational process. In other word, eco-industrial system is generated and evolved as a living body during the process of maximizing the generalized information entropy. In this way, the essence of a complex eco-industrial system has been revealed. The dynamic equation that controls the generation and evolution of an eco-industrial system can accordingly be acquired and resolved, from which the underlying dynamics and fractal features can be deduced. Thus, a complete new framework for eco-industrial system can be built. At last, Lubei eco-industrial system is utilized as a typical case to show that this new framework or model is capable of giving renewed mechanistic understanding on our universal nature including eco-industrial system. In addition, it is also hopeful in better explaining or adjusting our real world, such as agent interactions, the fractal phenomena and evolution property, actual design of many specific eco-industrial systems. | |||
TO cite this article:CHAI Lihe,CHENG Hongxin,WANG Mengshu, et al. Structural evolution of eco-industrial systems basing on information principle[OL].[ 8 May 2011] http://en.paper.edu.cn/en_releasepaper/content/4426199 |
8. Human Pulse Patterns Recognition using Improved Echo State Network | |||
Yang Ling,Wang Ruxu,Wang Guanghui,Zhang Wenbo | |||
Information Science and System Science 21 January 2011 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:In order to analysis human pulse more effectively and design a more perfect neural network identifier than current ones in process of pulse patterns recognition, the physiological significance of human pulse,as an important reference of selecting pulse feature parameters used to identify pulse,is fully considered. Based on traditional Chinese medicine(TCM) pulse theory, the pulse time domain and frequency domain feature parameters are extracted, and then the correlation dimension, maximum Lyapunov exponent and Kolmogorov entropy, which are used as the chaos feature parameters of pulse and used to quantitatively verify that the pulse is a typical chaotic signal, are received by calculating in the reconstructed multidimensional phase space of pulse. Finally, the improved echo state network (ESN) identifier, whose activation function is switched to non-symmetric function combined with chaos theory, is designed and used to train and test 12 kinds of pulse patterns. And the main parameters of the novel neural network are optimized by particle swarm optimization (PSO) algorithm. Experiments show that the pulse feature parameters are selected effectively and the improved ESN neural network is more superior to feedforward neural networks, such as back propagation (BP) neural network, probabilistic neural network (PNN) and radial basis function (RBF) neural network. | |||
TO cite this article:Yang Ling,Wang Ruxu,Wang Guanghui, et al. Human Pulse Patterns Recognition using Improved Echo State Network[OL].[21 January 2011] http://en.paper.edu.cn/en_releasepaper/content/4408370 |
9. A Multi-Strategy Approach for Global Maritime Distress and Safety System | |||
Tauseef Ahmed,Jiang Tao | |||
Information Science and System Science 23 April 2010 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:This paper proposed a revised disaster management plan for the vessels based on Global Maritime Distress and Safety System (GMDSS). This plan addresses the flawless communication for the vessels in emergency and distress. GMDSS comprises of complex systems resulting in high equipment cost, operational complexity and high false alert rate which compromised the maritime safety. The proposed plan guarantees the eradication of the flaws of GMDSS by removal of unnecessary features, standardization of the emergency communication result in communication among all ships and offshore. Digital Selective Calling (DSC) is the black sheep of GMDSS and is replaced by satellite phone or GSM protocol for terrestrial communication. Unmanned aerial vehicle (UAV) is equipped with system that ensures assistance in navigation and monitoring the sea traffic; it also provides the backbone network for GSM communication. The objective of this paper is to discuss the current flaws of GMDSS and to present methods to resolve them. | |||
TO cite this article:Tauseef Ahmed,Jiang Tao. A Multi-Strategy Approach for Global Maritime Distress and Safety System[OL].[23 April 2010] http://en.paper.edu.cn/en_releasepaper/content/42304 |
10. The Accuracy of Analogical Reasoning | |||
Xu Xiao | |||
Information Science and System Science 05 June 2006 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:The discussion of intuitive system of human beings is a hot spot in the Knowledge Engineering and management field. Intuitive system is referred to analogical reasoning. Analogical reasoning is discussed frequently in cognition and artificial intelligence field because of its’ creative power. But its’ accuracy of solving problem is less mentioned. In this article, the research history of analogical reasoning in cognition field is introduced briefly and two examples of analogical reasoning, which are a four-term problem and Rutherford’s atomic model respectively, are shown. And then, concerning the creativity of the analogical reasoning, the key step, relation-shift process, is abstracted, which is that a relation exists in the base domain should exist in the target domain if another relation exists in both and the components are aligned according to structure-mapping theory. The accuracy of the key step is discussed mathematically. Two definitions, shifted relation and aligned relation, are clarified. Then this problem about accuracy is transformed two statistic problems, which are referred to conditional probabilities. And we draw a conclusion that if positive correlations between the aligned relations and the shifted relations are higher, or if the correlations between the aligned relations are less, the answer is more right. At last, this article suggests that the improving work of the solution of this problem should focus on the statistic ways. | |||
TO cite this article:Xu Xiao. The Accuracy of Analogical Reasoning[OL].[ 5 June 2006] http://en.paper.edu.cn/en_releasepaper/content/6931 |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
Results per page: | 20 Total, 2 Pages | << First < Previous 1 2 |
About Sciencepaper Online | Privacy Policy | Terms & Conditions | Contact Us
© 2003-2012 Sciencepaper Online. unless otherwise stated