Switching between tasks of unequal familiarity: The role of stimulus-attribute and response-set selection.

It has been reported that it is harder to switch to a strong, well-practiced task from a weaker, less-practiced task than vice versa. Three experiments replicated this surprising asymmetry and investigated how it is affected by a reduction in interference between tasks. Experiment 1 progressively delayed the onset of the stimulus attribute associated with the stronger task. Experiments 2 and 3 separated the response sets of the tasks. Both manipulations reduced, without eliminating, interference of the stronger with the weaker task but reversed the asymmetry of switch costs, resulting in a larger cost of switching to the weaker task. The results are interpreted in terms of a model of the interactions between control input, task strength, and task priming. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

穿甲威力试验方法的改进

引入单发临界穿透速度的概念，２数字仿真技术模拟穿甲威力试验结果，对出的试验结果进行分析，通过分析发现目前试验方法中的缺陷。并提出了改进的试验方法，与目前试验方法比较，改进的方法有很大的优越性。     

舰船导航信号发生器虚拟化设计

介绍了基于PC总线的便携式舰船导航信号发生器虚拟化设计，着重叙述该仪器硬件设计、基于虚拟仪器开发平台LabWindows／CVI的软件设计。     

整数的最佳带符号二进制表示的随机生成算法

整数的带符号数字(BSD)表示广泛应用于计算机算术、密码学、数字信号处理等领域。给定整数有多种最佳带符号二进制表示。对整数的最佳带符号二进制表示的性质进行研究,给出了整数的最佳带符号二进制表示随机生成算法,所得算法能快速产生给定整数的随机最佳带符号二进制表示。     

一种简便的无损录波数据压缩方法

利用电力系统大多数波形数据的变化率不大的特点,使用波形的变化率代替实时波形进行存储,缩小数据的表示范围,从而能够以更小的数据表示位数保存原信息,达到数据压缩的效果。由于所有的操作都只是对数据进行重新编码,所以本方法除了有无损数据压缩的特点外,整个压缩和解压的过程也都非常简单,特别适用于嵌入式系统使用。最后的现场数据分析表明,该方法也能够达到不错的数据压缩效果。     

磨削温度计算机检测系统

本文提出了采用单片机对磨削温度检测的工作原理及软硬件的设计方法,具有测量精度高、直接显示等优点。当磨削温度超过允许值时,系统能开启红灯对操作者提出警告。文中还提出了一种新型的搭接式传感器的设计和制造方法,测量磨削温度时不必再进行烦琐的标定工作。     

基于Delphi的新老中国标准书号转换设计

介绍了国际标准书号的相关知识,分析了10位及13位中国标准书号的组成结构及其校验码的生成方法,并利用Delphi实现校验码生成及不同位数中国标准书号之间相互转换的程序。     

面向控制的分数阶微分模型的快速数值计算

求解分数阶控制系统的关键在于如何快速精确地计算分数阶微分.针对短记忆法和变步长记忆法的计算精度和计算复杂性顾此失彼的矛盾,本文提出了一种恒权重记忆法,它不舍弃历史数据,而是采用常值权重后全部记忆.在每个后继的采样周期,只需把新的数据简单叠加到历史数据上来考虑,从而极大地提高了计算精度和降低了计算复杂性,且有效地化解了两...     

基于机器视觉的实时丸药检测系统

丸药是最为常见的药品剂型,最后成品的外观都要求圆整均匀、色泽一致,在丸药检测方面使用机器视觉技术有着良好的应用前景。通过对丸药实时检测方法和途径的分析探讨,提出了完整的工作循环模式。根据此模式,给出了利用Matlab和visual studio开发实时检测系统的完整方案。     

Assessing two new wearable input paradigms: The Finger-Joint-Gesture palm-keypad glove and the invisible phone clock

Text and digit entry speed of two wearable one-handed input paradigms, the Finger-Joint-Gesture palm-keypad glove and the Invisible Phone Clock, were benchmarked against traditional one-handed cellular phone keypad input in a repeated-measurement design employing 18 subjects using a 9-word sentence. No significant difference in error-corrected text entry speed (5.3 ec-wpm) was found. Digit entry speed was significantly faster (8.3 ec-wpm) and differed significantly between input paradigms. Furthermore, digit entry was fastest for the traditional cellular phone keypad and slowest for the Invisible Clock keypad. A prediction model based on Fitts' law slightly overestimated text entry speed for novice users. Another prediction model, where each movement time between successive keys was corrected for key repeat time for each specific input paradigm, predicted the experimental results more accurately. Thirteen of the subjects ranked the Invisible Phone Clock as 1^st choice. The subjects' mapping of the Ericsson cellular phone functions (YES, CLR, NO, <,> and Address Book) was not according to the designer's model, partly due to functional fixedness. The input paradigms could be suitable candidates for new fragmentised interfaces where wearability is the key issue.