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A novel terahertz backward wave oscillator was proposed by utilizing sine waveguide combined with a grating reflector. Sheet beam was applied for interacting with slow wave. The investigation results show that, the oscillator can produce over 1.3-W peak power output at 1-THz under 19.4-kV operating voltage and 5-mA beam current.
Information under emergency situation is always uncertain, appearing as grey interval numbers. So, it is difficult to make decision correctly and rapidly enough in emergency. A multi-attribute decision making method is presented based on the concept of extended dominance relation and variable precision rough sets with grey information. Firstly, the definitions of extended dominance relation and variable...
the transfer of rural labor force takes a significant impact on Chinese economy and provides vocational education and training for the existing rural labor which can promote rural workforce transfer to non-agricultural industries and towns. This paper uses data envelopment analysis (DEA) to do a quantitative analysis on the efficiency of agriculture vocational education in China and actively explores...
This paper validates the ideological and political teachers' Teaching Effectiveness lists using SPSS17.0 Stat. software and structural equation model through questionnaires. It measures the ideological and political teachers' Teaching Effectiveness in Hebei province and analyzes the significance of difference for Teaching Effectiveness evaluation in the correlation statistics variables. Finally the...
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