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As self-interested agents and malicious agents often launch various attacks to reputation systems and these attacks are usually deceptive, collusive, or strategic, it is difficult to keep reputation systems robust against multifarious attacks. Many filtering strategies have been designed for providing robust reputation evaluation and minimizing honest buyers' purchasing risks. This paper presents...
This paper proposes the software watermarking algorithm based on Chinese remainder theorem, and introduces the authentication center to certify the watermark, to solve the problem that equation re-sorting algorithm are easily attacked by the random re-sequencing technology. The algorithm further disposals the sequence obtained, the selected divisor sequence and the multiple to generate the key, which...
Permanent-magnet synchronous-motor is a multi-variable, non-linear strong coupling system that is highly sensitive to the outer interfere and inter perturbation. To improve the system robustness and PMSM Servo System Realtime, the advantages of fuzzy system and neural network are taken to establish a kind of improved fuzzy neural net-work (FNN) models and algorithm, which is used to speed controller...
Incentive protocols are crucial for enhancing contribution and cooperation among nodes in P2P networks. In this paper, we consider an analytical framework wherein peers learn the gains of different strategies and evolve adaptively towards the better performance strategy. While a unitary incentive policy in the system may exhibit its incentive capability on itself, the competition among different incentive...
The decoupling and linearisation (D&L) of induction motor (IM) is an important approach to improve the control performance further. The multiscalar model of IM owns many advantages. So, based on the multiscalar model of IM, the analytic inverse system (ANIS) theory was used to analyze the invertibility of the IM system, and the analytic inverse control (ANIC) law was deduced. For the IM with parameters...
This paper presents a novel fuzzy control design of continuous-time nonlinear systems with multiple performance criteria. The purpose behind this work is to improve the traditional fuzzy controller performance to satisfy several performance criteria simultaneously to secure quadratic optimality with inherent stability property together with dissipativity type of disturbance reduction. The Takagi-Sugeno...
A more efficient robust watermarking algorithm based on DCT is proposed in this paper. The strength parameter of watermark in some approaches proposed is determined by experiments, we aim at establishing a mathematical model for hiding data in host image. By modifying the relationships between the selected middle-frequency coefficients and standard variance of DCT coefficients, watermark is embedded...
Peer-to-peer applications require high cooperation among users. User cooperation consists of two aspects, upload and download operations. However, not all users are willing to cooperate, and free-riders with little upload bandwidth are widely seen in the applications. Hereby, we put forward the relation between data block probability and the node distance in static situations. Then we discuss the...
This paper deals with a problem of turbine engine fault detection in dynamic process by using LPV mathematical model to exactly describe turbine engine dynamic characteristics, eliminate the effects of modeling error. Design robust fault detection filter (FDF) with eigenstructure assignment and realizes disturbance de-coupled with model uncertainty. The simulation results of turbine engine control...
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