Shiftwork and Heat Stress in an Intensive Care Unit

This paper reported the results of investigation on shiftwork and heat stress in an intensive care unit. The aim of this study was to analyse the physiological strain of nurses during the three shifts (Morning, Afternoon,Night) in relation to the specific microclimatic conditions and job activities. 8 professional nurses (6 female and 2 male), aged between 21 and 38 years (rnean 29. 8 ±5. 6 years), having from 3 to 18years service, were monitored throughout a complete working cycle of 4 days. They worked on a three shift system at fast rotation. Their working environment was an independent unit for intensive care and expert surgical treatment which was entirely air conditioned. The observation indexes included: twenty-five blood parameters, ten urine parameters, net cardiac cost and relation cardiac cost, etc. The results of the investigation have not envidenced serious alterations of the psycho-physical conditions of the nurses, but do pointed out some problems pertaining both to the environmental and physiological conditions.

Perception of Effects of Shiftwork Questionnaire (PESQ) among Ambulance Service Staff in Saudi Arabia: An Exploratory Factor Analysis

Objective: Despite efforts in describing the impact of shiftwork on the performance of health care workers, the perception of ambulance service staff is largely unexplored. This study attempted to develop the Perception of Effects of Shiftwork Questionnaire (PESQ) using a factor analysis approach to determine the underlying dimensions. Methods: A 16-item Likert scale research instrument, designed to gather information about the perceived effects of shiftwork on the respondents’ health, social relationships, and career quality, was floated to 375 ambulance services personnel in Saudi Arabia during March and April 2021. Results: Based on factor analysis, the questionnaire has three dimensions with varying reliability, namely “perceived effects on social relationship” (α = 0.815), perceived effects on health (α = 0.787) and “perceived effects on career quality” (α = 0.602). Over-all, the research instrument had an acceptable internal consistency (α = 0.829). Conclusion: The three-dimension model was analyzed simultaneously using parallel analysis and confirms that the three-factor model is the most ideal for the research instrument. Further research, however, is recommended to improve the internal consistency of the items which measure the perceived effects on career quality.

THE AHP:A MULTICRITERIA DECISION MAKING METHODOLOGY FOR SHIFTWORK PRIORITIZING

The objective of this paper is to show that the Analytic Hierarchy Process （AHP） is a very powerful methodology for designing shiftwork schedules. Manufacturing, mining and other large industrial operations often run around the clock and their employees report for work in shifts. The huge number of variables and the amount of knowledge that needs to be structured, integrated and synthesized forces the need for a system analysis process that is able to deal with such complexity. Work flexibility is a very important issue in Chile and in the rest of the world. One of the main problems of a flexible work process is handling shiftwork systems with their economic, health, social, family and environmental consequences.

基于轮班工作机制的WSN多跳聚类协议

针对Leach协议能耗不均和能量利用率不高的缺陷,提出并实现了基于"轮班"工作机制的多跳聚类协议MCPS。该协议在考虑节点通信代价的同时综合了负载平衡和降低冗余数据的思想,有效地改进了Leach协议的不足,提升了网络性能。仿真实验表明,MCPS协议的网络生命周期、能量有效利用率均明显优于经典分簇协议Leach。

轮班作业对客轮驾驶员影响的研究

采用问卷调查法对 48名男性客轮轮班驾驶员的睡眠和健康状况进行调查 ,并分别在白班和夜班后对其中 1 5名驾驶员进行心电图、闪光融合频率、明视持久度和神经行为功能测试。结果表明 ,驾驶员与对照组公共汽车司机相比睡眠障碍积分增高 ,且存在明显焦虑症状 ;驾驶员夜班后心电图 T波波幅增高 ,但其它指标无明显变化。

基于脑电信号的不同轮班制度下管制员疲劳评估

为评估不同轮班制度下管制员的疲劳变化情况和管制员疲劳在不同轮班制度之间的差异性,根据A空管局进近管制中心、B空管局进近管制中心和B空管局区域管制中心3个管制单位的不同轮班制度,设计疲劳测量方案,采集管制员脑电信号并以脑电慢波能量与快波能量之比作为表征疲劳状态的疲劳指标,采用SPSS15.0软件分析3种轮班制度下疲劳指标变化情况以及不同轮班制度对疲劳影响的差异性。结果表明:在同一轮班制度下,各次测量的管制员疲劳指标存在差异性;不同轮班制度对疲劳的影响存在显著性差异,A空管局进近管制中心的疲劳值最小,B空管局进近管制中心次之,B空管局区域管制中心最大。

基于脑电的管制员轮班疲劳特征分析

探究某终端管制中心现行的一种轮班制度下管制员的疲劳规律特征。根据该终端管制中心的轮班制度设计疲劳参数跟踪测量方案,使用Mangold-10生理多导仪测量管制员的脑电信号,选取慢波能量与快波能量比值作为疲劳指标。结果表明:值守08:30-16:00时段和10:00-18:00时段的管制员中有58%在第一个小班疲劳指标下降,100%在最后一个小班疲劳指标上升;值守16:00-24:00和18:00-03:00时段的管制员中72%第一个小班后疲劳指标上升,值守21:00-08:30的管制员中80%在第一个小班后疲劳指标上升。白天执勤的疲劳期是在执勤初期和执勤结束时,而夜间执勤的疲劳期是在执勤过程中;白天执勤结束与执勤前相比,管制员疲劳指标值上升与下降比例相当,而夜间执勤结束与执勤前相比,87%管制员疲劳指标值上升。

广州地铁车站自动排班系统

为了提高地铁车站排班效率和排班质量,广州地铁公司研发了车务信息管理平台(TNS),实现地铁车站通过计算机自动排班。文章介绍广州地铁车站自动排班系统架构、自动排班原则和系统实现形式。