The health sector is undergoing a transformation with the advancement of technology. This research presents a comprehensive emotion aware mental health monitoring system which uses random forest algorithm for emotion classification. By leveraging the Random Forest algorithm, the system can monitor and tell if one is going through depression, anxiety or any other mental instability ...

Представлены результаты разработки беспроводной системы мониторинга состояния окружающей среды. Система обеспечивает измерение параметров окружающей среды (абсолютная температура, относительная влажность, атмосферное давление, освещенность) в реальном времени и передачу данных на базовую станцию и в сеть Интернет по беспроводным каналам радиосвязи.

The growing deployment of solar photovoltaic (PV) and thermal collector systems requires intelligent maintenance frameworks to improve reliability and reduce operational costs. This study presents a hybrid Aidriven predictive maintenance system integrating Long Short-Term Memory (LSTM) networks for temporal forecasting and Random Forest (RF) classifiers for fault detection within ...

This study presents an alternate process for utilization of Zimbabwean silica sand to produce high-purity amorphous silica. The objective was to develop an optimum multi-stage purification that is environmentally friendly. The methodology starts with pre-treatment step with hydrochloric acid, followed by citric acid chelation stage to remove metallic oxide impurities. The pre-treated ...

As technology ramps up to high nodes, SRAM sense amplifiers struggle suffer from increasing static power. The paper proposes memristors as non-volatile, tunable loads in cross-coupled differential sense amplifiers as a remedy. Simulation in a 45 nm node reveals 69.2 % leakage power reduction, making the solution appealing for low-power usage. The static power reduction comes at ...

This paper analyses the effects of phase shifting in Dual Active Bridge (DAB) converters, which are widely applied in electric vehicle chargers, renewable integration, and solid-state transformers. Its symmetrical topology, comprising two full-bridge converters linked by a high frequency transformer and controlled through phase-shift modulation, enables seamless power flow in ...

High-purity silicon is the cornerstone of modern electronics and solar technologies. This study investigates the potential of Zimbabwe’s silica sand as a source of raw material for semiconductor-grade silicon. Samples from Mkoba, Gweru were analysed using Inductively Coupled Plasma (ICP) to determine elemental composition and impurity levels. Results show high silica content of ...

This article describes a practical method for improving quality in lead-acid battery production by combining metrological support with quality management. Key manufacturing steps, such as grid casting and paste application, often vary and can cause faults like cracked plates and shorter battery life. The study introduces a framework that standardizes how important measurements ...

The purpose of this project is to design and construct a 12 V DC to 220 V AC inverter using components such as the TL494 PWM IC, MOSFET and a center tap transformer. The TL494 will serve as the oscillator responsible for generating a 50 Hz alternating electromagnetic field. The TL494 will be configured to produce a wave output at the desired frequency of 50Hz. This wave will be ...

Conventional sequential PCB testers are inefficient, as a single failure halts all subsequent tests, leading to incomplete diagnostic data and delayed fault isolation. This study proposes a parallel virtual instrumentation framework in LabVIEW to overcome these limitations. By leveraging asynchronous execution, the framework runs multiple independent tests concurrently, continuing ...