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The paper focuses on the asymptotical stabilization of switched uncertain systems subject to actuator saturation. First, the actuator saturation part of the system is dealt with by a new proposed method. Then, based on the Multi-Lyapunov function method, a sufficient condition for system stability is got. The condition is expressed in the form of LMI, so easily solved. Further, the controller of the...
This paper conducts acoustic experiments from a signal processing perspective, to examine the “-/a/ /C_ (C)” narrow focus syllable processing strategy of Chinese L2 learners of English. The research discusses f0 as a key phonatory acoustic parameter. A result of “tight” Chinese CV structure in contrast with a “loose” English CV(C) structure obtained from our previous study has been verified in the...
Car GPS system is the most important function. Nowadays, the transport networks of a city become more and more complex, so that the traffic staggered become more complex. We proposed the approach on deciding the best path based on road conditions and user needs. It transforms the urban road traffic information in accordance with the objectives of the user-defined into equivalent road length indicators,...
With small deadweight, light-weight shotcrete can avoid the shotcrete lining from falling off, which benefits the bolt-shotcrete support of the roadway better under same bond strength. Light-weight shotcrete can be made by using clay ceramsite, polystyrene particles and fly-ash ceramsite to replace some gravel and sand. The experiments show that the characteristic of fly-ash ceramsite shotcrete is...
This paper proposes an Differential Evolution-Shuffled Frog Leaping Algorithm (DE-SFLA) for grid task scheduling. For Shuffled Frog Leaping Algorithm search in multi-direction, the frog leaping strategy is optimized, while taking advantage of the Differential Evolution Algorithm to produce better individuals by mutation, crossover and selection. The algorithm combines Differential Evolution Algorithm...
In the field of computer vision, image matching is very important in many applications, such as the object recognition, 3D reconstruction, stereo vision, motion tracking and augmented reality. A method of improving the Opensurf algorithm used in AR for decreasing matching points and mismatch and increasing the calculation speed is proposed.
This paper investigated the respiratory patterns of native English and Chinese's bilinguals in the read speech material of both languages. Experiments are conducted by respiratory belts, to measure breast breath signal, abdomen breath signal and the accumulated breath signal of the two. Results showed that speakers tend to adopt different breath patterns in L1 and L2 and tend to borrow their L1 respiratory...
To reduce image noise, we propose a novel image filter based on stepwise ratio grey model (SGM). The basic theory and the method of stepwise ratio grey prediction model are introduced first. The new filter makes use of neighborhoods around each noisy pixel to predict its intensity value and reflects the dynamics of stepwise ratio. The experimental results show that the proposed method, compared with...
This paper considers the production and pricing problem for deteriorating items with time-varying and price dependent demand rate. In this production system, the production rate is finite and shortages can be backlogged in the same cycle. The demand rate is linearly dependent on time and price over a finite planning horizon. A nonlinear model to minimize the average cost is presented. The proposed...
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