In this work, in situ measurements of the radio frequency electromagnetic field exposure have been conducted for an indoor massive MIMO 5G base station operating at 26–28 GHz. Measurements were performed at six different positions (at distances between 9.94 and 14.32 m from the base station), of which …

Energy conservation is crucial in wireless ad hoc sensor network design to increase network lifetime. Since communication consumes a major part of the energy used by a sensor node, efficient communication is important. Topology control aims at achieving more efficient communication by dropping links …

Maintaining the child-robot relationship after a significant break, such as a holiday, is an important step for developing sustainable social robots for education. We ran a four-session user study (n = 113 children) that included a nine-month break between the third and fourth session. During the study, …

Vroegtijdige detectie van agitatie bij mensen met dementie kan leiden tot tijdige interventies, waardoor verslechtering van de situatie wordt voorkomen en de kwaliteit van leven wordt verbeterd. De opkomst van multimodale detectie en de vooruitgang in kunstmatige intelligentie maken het haalbaar om technologie …

In today's world, understanding different viewpoints is key for societal cohesion and progress. Robots have the potential to provide aid in discussing tough topics like ethnicity and gender. However, comparably to humans, the appearance of a robot can trigger inherent prejudices. This study delves into …

In this paper, we experimentally compare orthogonal frequency-division multiplexing (OFDM) and on-off keying (OOK) modulation in the context of the IEEE 802.15.13-2023 standard at bandwidths up to 50 MHz across a Li-Fi link with distances up to 5 m and a lateral offset up to 51°. Error vector magnitude …

Sustainable ammonia colorimetric sensors made from bio-based compounds prepared from agricultural waste are developed. The sensors operate at room temperature at two important concentration scales: an accident scale (>50 ppm NH3 in the air) and a health and safety scale (1 ppm – 50 ppm NH3 in the air). …

The European Union (EU) Horizon Europe project NextGEM provides a framework for generating health-relevant scientific knowledge and data on new exposure scenarios to Radio-Frequency Electromagnetic Fields (RF-EMFs) and developing and validating tools for evidence-based risk assessment. Practical guidelines …

In this work, a feasible and low-cost approach is proposed for level measurement in multiphase systems inside tanks used for petroleum-derived oil production. The developed level sensor system consisted of light-emitting diodes (LEDs), light-dependent resistor (LDR), and a low-cost microprocessor. Two …

Acquired brain injury (ABI) is a leading cause of disability in adults worldwide, resulting in physical and cognitive challenges. Rehabilitation is often prescribed depending on the symptoms and severity of the injury. Technologies like robotics, wearables, and extended reality (XR) have been explored …