To measure the effects of Internet-based distractions during class, researchers evaluated 500 students taking an introductory psychology class at Michigan State University.
为了衡量上课期间上网对学生注意力分散的影响，研究人员对密歇根州立大学修读心理学入门课程的500名学生进行了评估。
Barroalso estimates tax multipliers based on the effects on GDP of changes inaverage marginal tax rates from federal and state and local income taxes, andsocial security payroll taxes.
Barro从联邦政、州以及各地方的所得税和社会保障工资税得出平均边际税率 * ，他也基于平均边际税率的变化对GDP的影响而估算出税收乘数（tax multipliers）。
A state dependent Riccati equation (SDRE) based controller was designed, and the controller's gain relates to the state, which results in complexity in computing but good effects of control.
设计了基于状态相关黎卡提方程(SDRE)方法的控制器，控制增益与系统状态相关，计算复杂程度较高，但控制效果好。
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