Inhibitory influences on asynchrony as a cue for auditory segregation.

A harmonic that begins before the other harmonics contributes less than they do to vowel quality. This reduction can be partly reversed by accompanying the leading portion with a captor tone. This effect is usually interpreted as reflecting perceptual grouping of the captor with the leading portion. Instead, it has recently been proposed that the captor effect depends on broadband inhibition within the central auditory system. A test of psychophysical predictions based on this proposal showed that captor efficacy is (a) maintained for noise-band captors, (b) absent when a captor accompanies a harmonic that continues after the vowel, and (c) maintained for 80 ms or more over a gap between captor offset and vowel onset. These findings support and refine the inhibitory account. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Repeated Masked Category Primes Interfere With Related Exemplars: New Evidence for Negative Semantic Priming.

In 4 experiments, the authors found evidence for negatively signed masked semantic priming effects (with category names as primes and exemplars as targets) using a new technique of presenting the masked primes. By rapidly interchanging prime and mask during the stimulus onset asynchrony, they increased the total prime exposure to a level comparable with that of a typical visible prime condition without increasing the number of participants having an awareness of the prime. The negative effect was observed for only low-dominance exemplars and not for high-dominance exemplars. The authors found it using lexical decision (Experiments 1 and 2), lexical decision with a response-window procedure (Experiment 3), and the pronunciation task (Experiment 4). The results are discussed with regard to different theories on semantic priming. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

用ATL开发异步调用组件

异步与分布式应用软件系统在工程领域有着广泛的应用,有必要寻找一种快速高效地构筑异步系统的方法,微软的组件对象模型COM可以很好地满足这方面的需要。首先概述开发异步调用组件的意义和工具,以及所涉及到的COM基本概念,包括接口、事件、连接点、线程模型等,并结合一个具体工程实例详述了在Visual C++6.0编程环境下用ATL开发异步调用组件的方法,最后对组件进行了测试并顺利通过,证明了COM开发此类异步应用系统的高效性。     

基于分离补偿网络的IPT系统功率扩容策略

将感应电能传输(IPT)系统的补偿网络分离并加入各并联逆变器中,用以解决功率扩容和环流问题.分析采用单逆变器拓扑和功率扩容拓扑的IPT系统数学模型. 设计各并联逆变器的补偿网络参数,推导功率扩容系统的功率与效率表达式. 分析各并联逆变器在驱动不同步时的环流回路,给出零电压开关(ZVS)控制策略. 搭建1.2 kW 基于分离补偿网络的IPT系统功率扩容装置,进行实验验证. 实验结果表明,各并联逆变器的输出功率比约为1∶2,均实现了ZVS,功率扩容系统直流到直流的整体传输效率为92.53%,环流幅值为0.2 A,证明了所提功率扩容拓扑的实用性和有效性.