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Noise pollution in urban environments is a common problem that affects people's health and quality of life. It is therefore one of the main issues addressed in many studies of environmental noise level assessment. The equivalent sound pressure level (LAeq) is one of the most widely used indicators for evaluating environmental noise from roads, railways, and industry. According to the European framework...
This paper is focused on comparison of several types of gradient methods that are often used in the field of determination of quaternion rotation from accelerometer and magnetometer. The paper also presents a novel approach to the definition of magnetic reference vector.
The sensing properties of carbon nanomaterials are studied and compared in this paper. Graphene oxide and multi-walled carbon nanotube films were used as active layers of chemoresistive gas sensors and characterized at room temperature towards ammonia detection in concentration levels from 100 ppm to 500 ppm in air. We conclude that graphene oxide based sensor has higher response (2.4% to 7.4% in...
The paper presents an electro-hydraulic linear actuator used at Tuzla Sea Survival School on the Cabin Emergency and Escape Trainer CEET B732 developed by author, which implements their research about electro-hydraulic system driven by common PLCs. This kind of control can be very easy to meet hydraulic process requirements, improve the system stability, reliability and automation level. Most of PLCs...
This article deals with the impact of different shapes of apertures in stencil on the insulation distance and shear strength of joints glued by adhesives „MG 8331S” and Hysol CA3150” on rigid substrates FR-4. These joints were formed by adhesive assembling of chip resistors 0805. Nine different shapes of apertures in stencil were used for this experiment. These differences have an effect on the quantity...
The main objective of the paper is presentation of challenges in technological aspect of manufacturing conductive paths on LTCC (low temperature co-fired ceramics) substrates. The effects of research are presented basing on the example of high resolution 3D antennas for sub-THz scanner performed using LTCC technology. The impact of screen preparation and printing conditions (the angle and pressure...
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