The virtual world has long been a focus not only of the gaming sphere, but also of the manufacturing and educational industries. The virtual world and its technology have many advantages, the basic ones being, for example, the use of experiential learning, with which the human brain can remember some things better and faster. It was due to the advantages of virtual reality technology that we decided to create an educational system on safety and health at work, and we focused on the healthcare segment due to the COVID-19 pandemic. Thanks to the cooperation of a professional consortium, we created an educational system for safety and health at work and carried out several extensive laboratory measurements, the results of which we followed up in practical measurements with medical staff. The created system is inherently unique and applicable and can be used across several industries. The article presents three basic types of scenarios as well as an evaluation of satisfaction with the proposed system from test participants, i.e., nurses.

This paper considers extreme dusty conditions at workplaces in underground coal mine. These extreme conditions stem from various physical factors that affect employees’ performance. The extreme effect of the dust can significantly contribute to permanent health damage or even the death of employees. In this study, we present and discuss the results of measurements of airborne dust and respiratory dust taken during wall cutting in a coal mine and propose effective measures to reduce the burden on the life and health of employees and the environment.

The aim of this contribution is to identify and quantify the magnetic field parameter (MP) devices for charging electric vehicles (EVs). An EV is a mobile device. The EV remains a mobile device even when it is charging in a fixed charging stand. ICNIRP and SBM standards apply to stable devices. A magnetic field (MF) creates local gradient fields that change cyclically over time near the charging stations. The rotating vector MF is a specific parameter. An MF is evaluated by its strength and spatial changes. The triaxial fluxgate magnetometer VEMA-041 was used for the measurements. The MF was observed in the frequency range of 0–250 Hz, and the magnetic induction density was from T 2 × 10⁻⁹ T to 2 × 10⁻⁵ T, with a sensitivity of 1.7 nT. The MF analysis was performed within the time and frequency range. The rotating vector MF was identified at the measurement points. Measurements were realized for the charge under the following parameters: cables, 600 A; transformer, 250 kVA (22 kV/400 V); a cab-fixed charging stand, and an AC/DC charger in the EV. EV charging was performed with 6.6 kW of power and 43-kW fast charging. The measured results were satisfactory, according to the ICNIRP and SBM 2015 standard. The values measured at a distance of 1 m from the wall of the transformer were B_RMS < 2 µT. B_RMS values < 3 µT were measured in the space of the cable’s entry into the distribution box. EV values should not be assessed under this regulation. However, an EV is a mobile device. In the selected EV sample (a first-generation Nissan Leaf), a frequency of 10 Hz and its multiples were detected during charging. The frequencies were generated in an AC/DC charger in the EV. These frequencies reached B_RMS < 0.2 µT in the driver’s footwell. The maximum value of the MF rotating vector was B_total < 0.3 µT and was directed to the crew area of the EV. The AC/DC charger generated B_RMS = 0.95 µTin the driver’s footwell. It is necessary to look for new tools for evaluating MFs for EVs, such as the standards used for stable sources today. These standards should be based on dosimetric principles.

This review brings an overview of the Slovak regulations concerning occupational safety and health at work (OSH) primarily considering the parameter of physical load. In addition to regulations, this article focuses on particular requirements at workplaces with an increased physical load and describes the permissible values of the physical load (see tables). Attention is given to assessing the working posture and handling of loads. The main purpose of the evaluation is to determine the parameters of physical load, which is the first important step in the process of health risk assessment. Based on the physical load assessment and the categorization of tasks for the physical load factor in the Slovak Republic, further steps and measures should be taken to improve working conditions, to reduce the workload, number of health problems, fatigue, and ultimately to prevent accidents at work and work-related musculoskeletal diseases.

The development of motoring and the ever-increasing traffic load on roads results in congestion and the collapse of traffic in weak places, which, due to their existing construction solution and traffic organization, cannot cover the current and forecasted requirements of carriers. The aim of this article is to present a proposal for a procedure of adjusting the organization of transport, based on our own research and scientific methods of traffic forecasting. The authors work with the hypothesis that there are possibilities of rebuilding weak points in the existing network of overland roads into transport hubs with a higher transport capacity that will cover the requirements of transporters. In this article, the authors emphasize that the basis of the search for an optimal solution to the change in traffic remains the development of calculation methods and consideration of the specific traffic conditions occurring in the given country. Using the example of a case study within the Slovak Republic, we present a proposal for calculation methods based on European standards, which can be used practically without changes in every EU member country. This case study deals with the proposal to transform an uncontrolled four-way intersection into a roundabout. The authors carried out extensive transport research, and on the basis of data analysis, proposed construction and traffic-operational modifications of the existing junction in order to fulfil customer requirements in transport logistics. The proposed solution was verified alternatively with regard to the planned construction of a motorway section near the assessed intersection. When designing the calculation methods, we used our own experimental measurements directly in the area and also included in the calculation methods calculations regarding the capacity of turbo intersections, which are not yet addressed by the technical regulations in the SR environment.