The effectiveness of texture-feature estimation by two popular image-analysis tools – the MaZda application and the PyRadiomics package was compared in the article. The study used images acquired with five imaging methods: X-ray, CT, MRI, ultrasound, and dermatoscopic imaging. Feature vectors generated for each modality were used to build classification models (LR, SVM, MLP, RF, ET) aimed at identifying specific disease entities. The results obtained clearly indicate the higher effectiveness of the MaZda application.

This paper presents a comprehensive review of bending sensors and their classifications. The main focus is on advancements in the design of optical fibre bending sensors based on fibre Bragg gratings (FBGs). Various measurement principles employed in optical fibre bending sensors are analysed, highlighting their respective advantages and limitations. Particular attention is given to sensors utilising long period gratings (LPGs), Tilted fibre Bragg gratings (TFBGs), and multicore (MCF) fibre structures, which demonstrate significant potential for the development of highly sensitive and compact bending sensing systems. 

The article describes digital and analogue methods for linearising the conversion function of thermoresistive transducers, with a detailed analysis of analogue methods. Analogue methods for linearising bridge circuits and measurement circuits based on passing a reference current through a resistance temperature detector (RTD) are considered. Linearisation of bridge circuits is based on the formation of the compensatingsupply voltage of the bridge circuit, which depends on the change in the measured temperature. When using the measurement method based on passing a reference current through an RTD, nonlinearity compensation is achieved by changing the conversion coefficient of the measuring signal or passing an additional current through the RTD, which linearly depends on the value of the RTD’s voltage change (measured temperature value). When passing an additional compensation current through the RTD, the nonlinearity error is not grater than0.1°C in the range of 0...800°C, and the schematic diagram of the measuring transducer contains a minimum number of elements, which allows to increase its reliability. In general, the choice of a linearisation method depends on the requirements for accuracy, operation rateand resource limitations of the measuring system.

This publication investigates the influence of external factors on the readings of heat flow sensors located at different distances from the heat source. ARIMA models with Gaussian distributions and t-distribution were used for the analysis, as well as Quantile-Quantile plots to assess the appropriateness of the distribution of model residuals. It was found that the influence of external factors varies significantly depending on the distance of the sensor to the heat source, which is confirmed by the results of the analysis. Sensors located closer to the heat source showed greater sensitivity to environmental changes, while sensors at a greater distance showed more stable readings. The obtained results emphasize the importance of taking into account external factors during the placement and operation of heat flow sensors to ensure maximum measurement accuracy.

This paper presents the results of a study on modified transimpedance amplifier circuits aimed at expanding their functionality. Using SPICE simulations, the impact of varying reference voltages on the output signal of the amplifiers was analyzed, allowing for the isolation and quantitative evaluation of the contributions of the photodiode and photo resistive conversion mechanisms. The results demonstrate that the proposed modifications enable the acquisition of informative signals carrying information about the photodiode and photoresistive components of the photocurrent. Additionally, it was found that the modifications affect the stability of transient processes and the impedance characteristics of the amplifiers. Based on the conducted research, a method for in-situ diagnostics of organic structures with the selection of the photodiode and photoresistive components of organic photostructures has been developed.