通道宽度对驾驶员动态视觉和操作行为的影响

使用眼动仪及车速记录仪记录了5种试验条件下3名驾驶员在驾驶过程中的眼动行为和车速数据,分析了不同通道宽度条件下的车速变化特征、驾驶员眼动特征和操作行为特征。结果表明:随着通道宽度变窄,驾驶员的注视点变近,对障碍物的注意变得集中,且习惯于以左侧障碍物为参照来调整车辆运行状态;通道宽度变窄使驾驶员信息感知阶段时间所占的比例减小,而操作校正阶段时间所占比例增大,且通过条件越差,对驾驶员的刺激越强烈。

TSD模式下行为管理对漏斗胸微创矫正术患儿的影响

目的:探讨告知-演示-操作(TSD)模式下行为管理对漏斗胸微创矫正术患儿的影响。方法:选取2018年10月1日~2021年10月31日择期行漏斗胸微创矫正术(Nuss术)的106例漏斗胸患儿为研究对象,按入院时间分为观察组和对照组各53例,对照组给予常规护理,观察组在此基础上实施TSD模式下行为管理;比较两组干预前后儿童焦虑情绪障碍筛查表(SCARED)评分、Frankl评分、儿童抑郁自评量表(CDI)评分、Houpt行为量表评分、生活质量评分及血压水平。结果:干预后,两组SCARED评分、CDI评分及收缩压低于干预前(P<0.05),且观察组低于对照组(P<0.05);干预后,两组Frankl评分、Houpt行为量表评分、生活质量评分及舒张压高于干预前(P<0.05),且观察组高于对照组(P<0.05)。结论:TSD模式下行为管理可有效缓解漏斗胸微创矫正术患儿术后焦虑、抑郁情绪,提升其治疗依从性,改善生活质量,降低应激反应。

The Role of Phase Errors Distributions in Phased Array Systems Operations

A comprehensive study on the role of the phase errors distribution on the performances of the phased array systems has been led using a complete and behavioral model for radiation-pattern characteristics. The used model has many input parameters and it has a lot of features, such as parameters simulations with results analysis, unconventional two-dimensional color graph representation capability in order to show more clearly the results. The results of the study have been discussed and reported. The main achievement of this work is the demonstration that the RMS phase error is a valuable figure of merit of phased array systems but it is not sufficient to completely describe the behavior of a real system. Indeed, this work has shown how the phase errors distribution actually affects the performances of the phased arrays antennas.