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With the increasing utilization of parking lot, the demand for intelligent parking management system is higher and higher. Through the realization of intelligent and networked management, it is the ultimate goal of the parking lot management system to be able to book and check the parking spaces of multiple parking lots, and finally realize the scheme of stopping whenever you want. The design is an self-service intelligent parking management system based on wireless sensor network (WSN for short). The upper computer compiles the upper computer management system through C #, monitors the data from the lower computer ZigBee in real time, and receives the vehicle information data from the terminal node through ZigBee wireless way. ZigBee module is mainly based on STM32 single chip microcomputer, with ZigBee module as ZigBee node. The system consists of coordinator node and terminal node. The terminal node is equipped with infrared sensor to monitor whether the vehicle is parked or not, which realizes the intelligent management and accurate use of the parking lot. The experimental test results show that the system has a short response time and high response accuracy. The average positioning time of parking space is about 2s and the average positioning accuracy is no more than 5cm.

This paper investigates some properties of two-way alternating pushdown automata with only existential (universal) states which have inkdots and sublogarithmic space. We show, for example, that for sublogarithmic space-bounded computations, multi-inkdot tow-way alternating pushdown automata with only existential states are incomparable with the ones with only universal states, and the classes of sets accepted by these pushdown automata are not closed under complementation.

The kaburobo is a kind of stock robot developed by Waseda University written in JAVA. People can finish Virtual Stock Exchanges (VIREAL) on a imagine platform. Players can also make a program to carry on the algorithm simulation and be realized it through the software interface. This paper introduced kaburobo’s work principle in detail. Based on the research result and through this stock trade platform, we studied the application of artificial intelligence (AI) in Stock Exchanges field. This article only does one simple analysis and hoped can get up function which certain offered a few ordinary introductory remarks so that others may offer their valuable ideas in China.

This paper addresses the problem of non-fragile H/sub /spl infin// controller design for nonlinear systems. The controller to be designed is assumed to have additive gain variations. Design methods for dynamic output (measurement) feedback are presented in terms of positive definite solutions to a pair of coupled Hamilton-Jacobi inequalities. The resulting design is such that the closed-loop system, is robustly stable and has an L/sub 2/ gain bound with respect to the additive controller gain variations.

In this paper, the differential game and dissipation inequality are applied to the disturbance attenuation and robust H/sup /spl infin// control for uncertain linear systems with multiple time-delays in states. Two kind of robust H/sup /spl infin// controllers are presented respectively by solving Riccati inequalities. One is independent of delays and the other one is dependent on delays. A numerical example is given to illustrate the obtained result.