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Technologies, Volume 13, Issue 4

April 2025 - 42 articles

Cover Story: We introduce a novel reinforcement learning framework designed for fail-operational systems, where safety and continuous functionality are critical. By disentangling dual skill variables—namely, operational policy and backup policy—the proposed method ensures robust performance even under failure scenarios. We validate our approach through various simulations, demonstrating its ability to maintain task completion in the presence of partial agent or actuator failures. This work contributes to the development of resilient AI for safety-critical applications such as autonomous vehicles and robotics. View this paper
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Articles (42)

  • Article
  • Open Access
1 Citations
1,194 Views
35 Pages

Understanding Technology Perception in Autism with Separate Analyses for Anxiety and Depression Using Quantum Circuit Simulation Approach

  • Gema Benedicto-Rodríguez,
  • Vanessa Zorrilla-Muñoz,
  • Nicolas Garcia-Aracil,
  • Eduardo Fernandez and
  • José Manuel Ferrández

Background: This work explores the current use of technologies and the perception of their impact on people diagnosed with Autism Spectrum Disorder (ASD) and other comorbidities—Chronic Anxiety (CA) and Chronic Depression (CD). Autistic people...

  • Article
  • Open Access
6 Citations
2,597 Views
22 Pages

Enhancing Hand Gesture Image Recognition by Integrating Various Feature Groups

  • Ismail Taha Ahmed,
  • Wisam Hazim Gwad,
  • Baraa Tareq Hammad and
  • Entisar Alkayal

Human gesture image recognition is the process of identifying, deciphering, and classifying human gestures in images or video frames using computer vision algorithms. These gestures can vary from the simplest hand motions, body positions, and facial...

  • Article
  • Open Access
2 Citations
981 Views
18 Pages

Leveraging IPv6 and ICMPv6 for Delay-Tolerant Networking in Deep Space

  • Umberto Pirovano,
  • Oriol Fusté and
  • Anna Calveras

Communications in delay-tolerant networking (DTN) environments like deep space face significant challenges due to immense distances and the intermittent nature of links. Overcoming these issues requires moving beyond the assumptions of immediacy and...

  • Article
  • Open Access
1 Citations
4,069 Views
22 Pages

Ground segmentation in LiDAR point clouds is a foundational capability for autonomous systems, enabling safe navigation in applications ranging from urban self-driving vehicles to planetary exploration rovers. Reliably distinguishing traversable surf...

  • Article
  • Open Access
1 Citations
1,662 Views
33 Pages

The widespread availability of artificial intelligence (AI) tools has facilitated the development of complex, high-performance applications across a broad range of domains. Among these, processes related to the surveillance and assisted verification...

  • Article
  • Open Access
2 Citations
1,335 Views
31 Pages

An Experimental and Numerical Analysis of the Influence of Surface Roughness on Supersonic Flow in a Nozzle Under Atmospheric and Low-Pressure Conditions

  • Pavla Šabacká,
  • Jiří Maxa,
  • Robert Bayer,
  • Tomáš Binar,
  • Petr Bača,
  • Jana Švecová,
  • Jaroslav Talár and
  • Martin Vlkovský

The ongoing research in Environmental Scanning Electron Microscopy (ESEM) is contributed to in this paper. Specifically, this study investigates supersonic flow in a nozzle aperture under low-pressure conditions at the continuum mechanics boundary. T...

  • Article
  • Open Access
2 Citations
5,442 Views
28 Pages

Distortions of electrocardiograms (ECGs) caused by mandatory high-pass and low-pass analog RC filters in ECG devices are always present. The fidelity of the ECG waveform requires limiting the RC cutoff frequencies of the diagnostic (0.05–150 Hz...

  • Article
  • Open Access
1,151 Views
22 Pages

New Approach for Mapping Land Cover from Archive Grayscale Satellite Imagery

  • Mohamed Rabii Simou,
  • Mohamed Maanan,
  • Safia Loulad,
  • Mehdi Maanan and
  • Hassan Rhinane

This paper examines the use of image-to-image translation models to colorize grayscale satellite images for improved built-up segmentation of Agadir, Morocco, in 1967 and Les Sables-d’Olonne, France, in 1975. The proposed method applies advance...

  • Article
  • Open Access
1,480 Views
21 Pages

We present a novel approach to reinforcement learning (RL) specifically designed for fail-operational systems in critical safety applications. Our technique incorporates disentangled skill variables, significantly enhancing the resilience of conventi...

  • Article
  • Open Access
2 Citations
1,191 Views
20 Pages

This study presents a research approach to creating 3D animations in a virtual reality game using the morphing technique as well as heart rate variability (HRV) analysis. The aim is to investigate the mental effects of the game on players by analysin...

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Technologies - ISSN 2227-7080