In modern society, humans spend most of their time in the indoor environment (home, work, school...). This indoor lifestyle constantly poses challenges to our physical and mental health by affecting our hormone levels and circadian rhythm. This article deals with the possible connection between human and working environment factors and the emergence of health problems in connection with work. Using statistical methods, the dependence between the six characteristics (age, length of employment, visual demand of the work task, satisfaction with lighting conditions, and shift work) and occurrence of health-related problems and discomfort (i.e., eye discomfort, headache, eye fatigue, and seasonal affective disorder symptoms) was examined. The paper also deals with the evaluation of lighting conditions in the workshop using the lighting design software DIALux evo 9.2. Using this software, two lighting variants were modeled. The first simulated variant included lighting parameters according to the currently used luminaries and the second variant contained more efficient LED luminaries.
The article is aimed at assessing the possible negative impact of microclimate factors on work wellbeing, health and work productivity of the employees of the selected operation. In this paper, the effect of microclimate conditions such as air humidity, air flow and air temperature on workers comfort perception were studied. The research was carried out on a sample of 5 workers out of a total of 15 employees in the production hall. The aim of the research was to determine the level of influence of selected thermal parameters on the physical and mental well-being of employees. Participants were asked to complete a questionnaire designed to determine the level of perception of the impact of selected thermal parameters on the most vulnerable body parts. A mathematical model was used for a comprehensive assessment of the work environment's impact on employees. As the productivity of employees may also depend on employee satisfaction, research results can be used to improve the comfort of employees and to achieve better work performance.
Against the background of severe problems related to environmental noise, there has been a significant increase in the demand for its controlling. It has led to an increase in research efforts to develop the correct ways of measuring acoustic descriptors with the closely related research of soundproof and highly sound absorptive building materials. The sound insulation capacity of a barrier is indicated by two acoustic parameters-sound absorption and transmission loss. The contribution describes the principle, methods, and process of measurement of acoustics parameters using an impedance tube, explains the notion of sound absorption and transmission loss, and demonstrates this knowledge in the experimental measurement of acoustic parameters of selected materials (textiles from the automobile, polyurethane foam and absorbent cotton).
This paper focuses on evaluating lighting conditions in a university classroom used for day and evening classes. The evaluation was made with regard to the legislation requirements for evening classes and adult education. The practical part of this paper consists of illumination measuring and simulation. A RadioLux 111 luxmeter was used to measure the illumination during the absence of daylight, which often occurs, especially in winter during the later hours. The simulation was performed in the DIALux EVO 10.1 and ReluxDesktop lighting design software. In both software, a 3D model of the classroom was created to represent its actual state. The results of the measurement and both simulations were compared with each other and with the requirements of the legislation. The requirements for evening classes have not been met in all three cases; therefore, the lighting simulation tools were used to improve the lighting system design concerning its energy efficiency and costs. This paper points out the benefits of using freely available computer software in the process of the calculation and improvement of lighting systems.
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