Volume 61, Issue 1-2, 2026

20260102-full
Issue 1-2, 2026

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 61. No 1-2/2026
Quarterly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20260102-full

C O N T E N T S

Stanislav Ivanov
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20260102-01
Volumetric visualization of spatial radio link performance for anomaly monitoring and weather-related attenuation in modern mobile networks
Stanislav Ivanov

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Modern cellular networks lack a unified, vendor-independent mechanism for observing radio-link performance directly at the end-user segment of the Uu interface, where the combined effects of propagation conditions, cell load, ...  read more

20260102-02
A multi-model consensus framework for pneumonia detection: optimizing diagnostic sensitivity under “Green AI” constraints
Ertan M. Geldiev

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Automated pneumonia diagnosis from chest X-rays minimizes subjective bias, but powerful deep learning models often require expensive hardware, hindering deployment in budget-limited regions. This study develops a “Green ...  read more

20260102-03
Design and hardware optimization of a modular EEG acquisition system for BCI applications
Vanessa S. Nazakova

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The proposed EEG hardware is intentionally designed as an open-hardware, costeffective module utilizing widely accessible commercial-off-the-shelf (COTS) components. This approach aims to meet basic research requirements for ...  read more

20260102-04
IoT-based indoor environmental monitoring and CO2 prediction using FIWARE and Sigfox for smart laboratory environments
Takeshi Tanaka, Tomoo Sigehuzi, Masayuki Yamauchi, Shuji Oji, Masaya Watanabe, Satoru Tada, Koji Kakugawa, Katia Vutova

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This paper presents an Internet of Things–based system for continuous monitoring of carbon dioxide (CO2), temperature, relative humidity, atmospheric pressure, and illuminance in a laboratory, together with a 15-min-ahead ...  read more