Design of minimum sensitivity multiple loop feedback bandpass active filters

A method is described for determining multiple loop feedback topologies which yield minimum sensitivities for symmetrical, all-pole bandpass filters. The procedure begins with a follow-the-leader feedback (FLF) topology and additional feedback loops are constructed until minimum sensitivity is achieved. Filters comprised of identical second-order sections and non-identical sections, respectively, are considered.     

Visual information-processing speed in reflective and impulsive children.

A backward-masking procedure was used to measure the rate of visual information processing in 8- and 10-year-old reflective and impulsive children. The test stimulus (TS) and the masking stimulus (MS) which followed it were presented tachistoscopially. The subject's information-processing threshold was defined as the next highest TS-MS interval above the interval where at least 3 of the 4 TSs were incorrectly identified. Reflective children were significantly faster than impulsive children at processing information. This finding was related to research indicating that reflective and impulsive children employ similar cognitive strategies; it was suggested that performance differences between these children might be related to reflective children employing their strategies with more adequate information.     

中国武术散打运动员自我控制调节能力结构模型研究

通过16例专家访谈、40例开放式问卷调查和505例现役散打运动员调查,建立了武术散打运动员自我控制能力五因子模型,具体由自制力、坚韧性、自我延迟满足、运动独立性、采取适应比赛情境的控制调节方式构成。并据此编制武术散打运动员自我控制能力评价量表。验证性因素分析结果表明,量表具有较好的信度和结构效度。初步整理出优秀和非优秀散打运动员自我控制能力常模,为准确地分析和评定运动员自我控制能力提供参考依据。     

An Examination of Final Evaluation Methods Used in Master's Level Counseling Programs

This article reports the findings of a national study examining methods used for final evaluation in master's level counseling programs.