The demands of text processing are frequent and various in computer applications. If developed specific program for different requirements, the program would be complicated and hard to reuse. The paper defines rules to describe the logic of text processing, and designs an engine to parse and execute the rules, with which we simplify the text processing from programming to writing rules. Also, the paper compares the describable solution with the major text editors, to show the expandability and extra functionality of text processing. After describing the principle of rule definition and the implementation of engine, an experiment of extracting web topic text is given to verify the rationality of the rule and the efficiency of the engine.
Linear motor is applied in the seismic source system of deep well seismic wave exploration, which belongs to international cutting-edge techniques of the exploration industry. Compared to traditional blasting techniques, the technique has better safety performance and lower cost. It is concluded that the setting basic frequency is a critical factor for start-up force of the linear motor in the seismic source system based on the experiment and relative data. The concept of practical efficiency is proposed. In addition, the performance of the linear motor was improved significantly by analyzing relative data curves between inverter output frequencies, line voltage of the linear motor and the start-up force of the linear motor.
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