In management information system, the query performance of database has important effect on the application and spread of the system.

管理信息系统中，数据库的查询性能对系统的应用和推广具有重要的影响。

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Simulation shows co-channel interference and maximum multi-path delay spread have significant impact on the BER performance and PDMRC gives the best performance in most common environment.

仿真表明同信道干扰与最大多径延迟扩展对系统性能影响很大，在通常情况下采用PDMRC具有最好的性能。

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The performance of Direct Sequence Spread Spectrum(DSSS) in severe pulsed noise interference will be badly degraded when the duty factor is small.

当脉冲干扰占空比较小时，干扰能量集中，导致直接序列扩频（DSSS）系统的误码性能较差。

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The question surely hit home for the many JPMorgan owners who invested in the company on the assumption its improving performance would spread more wealth around.

FORBES: Dimon Doesn't Think Trading Misfire Will Impact JPMorgan Dividend

As far as possible motives behind the three-legged spread go, the potential for a disappointing third-quarter report represents just one possible explanation, as performance in U.S. equities across the board has tended to turn on a dime on negative or positive headlines out of Europe.

FORBES: Bears Run On Dunkin', Bet On Downside For P.F. Chang's