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This paper is concerned with the problem of designing a fault-tolerant controller for uncertain discrete-time networked control systems against actuator possible fault. The step difference between the running stepkand the time stamp of the used plant state is modeled as a finite state Markov chain of which the transition probabilities matrix information is limited. By introducing actuator fault indicator matrix, the closed-loop system model is obtained by means of state augmentation technique. The sufficient conditions on the stochastic stability of the closed-loop system are given and the fault-tolerant controller is designed by solving a linear matrix inequality. A numerical example is presented to illustrate the effectiveness of the proposed method.

This article uses SPSS17.0 to do empirical analysis through the questionnaire. After that it put out four core value of smarter tourism which are science and technology innovation value, industrial support value, economic contribution value and social pull value. By using the correlation analysis to analyze the correlation of the four core value, thus put forward development strategies, which makes smarter tourism become the gripper to ascend tourism industry science and technology value and to improve the strategic position of tourism industry.

This paper describes a comprehensive computer network system based on question bank, examination for electrical and electronic. It is developed by our teaching and research section. The selecting, doing and marking test items has been all completed by computer, which has made reform of electrics and electronics technology enter a new stage.

The remote control part of the system can set parameters such as operating mode and so on, while real-time recording and displaying running state of hydraulic supports, preserving historical data. It gathers control, data recording, data query and intelligence analysis as a whole, communicating with underground with RS485 and CANBUS communication interface functions, through PROFIBUS, MODBUS, CANBUS and other real-time protocols, in order to achieve continuous data acquisition and control, namely, to achieve unattended automatic operation, so that unmanned in the major coal production links to attain truly safe production.

The photorefractive effect was observed in poly(N-vinylcarbazole) composite films doped with electro-optic chromophore 2,5-dimetly-4(p-nitrophenylazo) anisole, plasticizer N-ethylcarbazole and different content fullerence C60. Their two-beam coupling experiment was performed by using a cw He-Ne laser at 632.8 nm. The two-beam-coupling gain coefficient as higher as 140 cm-1 was measured at poling dc electric field of 76V/μm and it was also found to be relied on the content of photosensitizer C60.

Crystalline organic complex thin films have been performed by vacuum evaporation method on HOPG substrates.Using Scanning Tunneling Microscope storage,array has been made on the film by applying voltage pulses between the tip and the substrate.The recording marks are 1.3nm in diameter.Voltage-current characterization shows that the recorded region has a conductor behavior while the unrecorded regions shows an insulator behavior.It is confirmed from experiments that the distance between two recording marks can be as short as 2nm,which corresponds to the storage density of 2.5×1013bit/cm2.The mechanism about the recording is briefly discussed.

The transient optical Kerr effect (OKE) and optical induced absorption of emeraldine base (EB) in dimethylformamide solution have been investigated with femtosecond laser pulses.Only a ultrafast component of OKE of EB solution is observed and its dephasing time is given by theoretical fitting.The third-order nonlinear optical susceptibility of EB solution is also determined.Two-photon absorption is proved to be the predominant mechanism causing the observed optical limiting behavior.