The use of modern technologies in the life and work of teachers before and during Covid virus

Jevtić, Radoje

doi:10.5937/zrpfu2123151j

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…Dif ferent mathematical, statistical and survey methods were used in mentioned research. Concretely, for the purposes o f this paper, the survey method and base statistical methods for results processing were used [7][8][9][10].…”

Section: Methodsmentioning

confidence: 99%

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The use of modern technologies in digital violence against pupils and students

Jevtić

2023

Educ Res Health Sci

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Introduction/Aim: This research had three aims. The first aim was to show the review of noted digital devices in the life and work of pupils and students, their absence in the life and work of pupils and students so as to show the way of use of some devices. The second aim was to show possibility of exposure to digital violence for elementary and secondary schools' pupils and students. The third aim was to show the presence and influence of digital violence between pupils and students. Methods: The survey method on population of 1800 respondents (600 pupils from elementary schools, 600 pupils from secondary schools and 600 students from University in Nis). Results: Obtained results showed great influence of modem digital devices in the life and work of respondents, particularly mobile phones (every respondent had a mobile phone). The exposure to digital violence of respondents was very high (more than 80% of respondents used social networks with different degrees of exposure). Digital violence exists between respondents in a high degree (more than 70% of respondents were harassed by e-mail, phone or social networks). Conclusion: Digital violence presents serious problem for respondents, and it is in the most cases conducted by mobile phone.

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Section: Methodsmentioning

confidence: 99%

“…Without these devices, many o f them are complete ly helpless -they don't know how to prepare food, how to make fire, how to find some street, how to en tertain themselves or others and many other things. On the other hand, many o f them use these devices as powerful weapon o f digital violence [5,8]…”

Section: Introductionmentioning

confidence: 99%

The use of modern technologies in digital violence against pupils and students

Jevtić

2023

Educ Res Health Sci

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Exposure of the students of the secondary school of electrical engineering "Nikola Tesla" to wireless electromagnetic radiation

Jevtić¹,

Janković²

2022

Zdravstvena zaštita

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Introduction/Aim: Wireless electromagnetic radiation from routers is an everyday occurrence in the life and work of modern man. They are widely used in many professional, public and domestic facilities, which means that people of all ages can be constantly exposed to electromagnetic radiation from these devices. The aim of this study was to determine the electric field strength, the magnetic field strength, and the electromagnetic exposure of students in different laboratories of the Secondary School "Nikola Tesla", depending on the type of routers installed in them, as well as to check some of the obtained results with the help of the appropriate software program of high-frequency (High-Frequency Simulation Software - HFFSS) for the simulation of electromagnetic radiation through different environments. Methods: Measurements of electric and magnetic field strength, as well as electromagnetic exposure, were carried out using the measuring instrument Spectran HF 60105, on four different types of routers installed in four laboratories of the Secondary School of Electrical Engineering "Nikola Tesla" in Niš. Measurements were realized on each router, through five horizontal and five vertical positions, with a distance of 45o in relation to the horizontal and normal axis of the router, and with spaces of 1 cm, which gives a total number of one thousand measurements. Results: The measured results obtained on four different routers that operated at a frequency of 2.4 GHz for the electric field strength (measured in millivolts per meter), magnetic field strength (measured in microampere per meter) and electromagnetic exposure (in microWatts per square centimeter) were below the limit values defined by standards. The achieved results were verified only for the router TL-WR841HP with the help of HFSS for the simulation of electromagnetic radiation through different environments. The result of the simulation check practically confirms the reliability of the measured results for TL-WR841HP router. Conclusion: Measuring and monitoring electromagnetic radiation is a very important task aimed at preserving and improving the quality of the working and living environment, as well as the quality of life and health of people and children. Software programs for the simulation of electromagnetic radiation can be used when it is not possible to carry out experimental measurements due to technical problems, hindered access to the device, danger of excessive radiation or some other reasons.

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The use of modern technologies in the life and work of teachers before and during Covid virus

Cited by 2 publications

References 8 publications

The use of modern technologies in digital violence against pupils and students

The use of modern technologies in digital violence against pupils and students

Exposure of the students of the secondary school of electrical engineering "Nikola Tesla" to wireless electromagnetic radiation

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