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In this paper, we present a closed labeled tree mining algorithm, FBMiner, based on the add-remove principle of closed sets which is newly introduced. Also, we propose a time-decay module to solve stream data mining which gives more attention on the latest data. Compared to the traditional mining algorithms in data stream, FBMiner performs well even that the data is of high complexity. The experiment...
In this paper we indicate the concept of dynamic data flow graph based on the dynamic data dependency during execution of software. On this basis, we propose a dynamic software watermarking algorithm, which embeds watermarking information into DDFG of software, and discuss the implementation of embedding and extracting watermark. Finally we analyze the performance of this algorithm.
A novel cost-effective electronic ballast, with an asymmetric control, is proposed for high intensity discharging (HID) lamp. The ballast topology is composed of a half-bridge inverter to supply the lamp with high-frequency square-wave voltage and a serial resonant circuit to filter the lamp current into quasi-sine wave. The asymmetric control, with the fixed frequency PWM, can regulate the lamp power...
A kind of rock bolts length measuring system using techniques of embedded system and ultrasonic waves is proposed. It can realize controlling for circuit of ultrasonic transmitting, circuit of ultrasonic wave receiving, electrical source, circuit of A/D transforming, keyboard, LCD, loudhailer etc by program, and analyzing signal of reflecting ultrasonic waves. The system's MCU is LPC2210 in the series...
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