Shift systems Physiological aspects 3 Dissertations 2 Dissertations, Academic 2 Employees 2 Lighting 2 Scheduling 2 Attitudes 1 Case studies 1 Electric power plants 1 Engineers 1 Environmental aspects 1 Fire fighters 1 Health and hygiene 1 Health aspects 1 Job satisfaction 1 Management 1 Manufacturing industries 1 Night work 1 Nurses 1 Officials and employees 1 Physiological effect 1 Production scheduling 1 Psychological aspects 1 Rescue work 1 Safety measures 1 Work 1 Work environment 1 Workload 1