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Applied Sciences, Volume 15, Issue 7

April-1 2025 - 658 articles

Cover Story: Imaging Atmospheric Cherenkov Telescopes (IACTs) have revolutionized our understanding of the universe at very high energies (VHEs), enabling groundbreaking discoveries of extreme astrophysical phenomena. These instruments capture the brief flashes of Cherenkov light produced when VHE particles interact with Earth’s atmosphere, providing unique insights into cosmic accelerators and high-energy radiation sources. We describe how the pixel time tags can help in the discrimination between photonic and hadronic showers, with a focus on the ASTRI Mini-Array Cherenkov Event Reconstruction. Our methodology employs a Random Forest classifier with optimized hyperparameters, trained on a balanced dataset of gamma and hadron events. This machine learning approach enables effective integration of both morphological and temporal information, resulting in improved classification performance. View this paper
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Articles (658)

  • Article
  • Open Access
2,045 Views
14 Pages

7 April 2025

Background: This study evaluated a custom algorithm that sought to perform a radiogenomic analysis on lung cancer genetic and imaging data, specifically by using machine learning to see whether a custom clustering/classification method could simultan...

  • Article
  • Open Access
1 Citations
1,628 Views
29 Pages

Optimizing Thermal Performance of Mini Heat Exchangers: An Experimental Analysis Using a Full Factorial Design

  • Sergio da Silva Franco,
  • Álvaro Augusto Soares Lima,
  • Alvaro Antonio Villa Ochoa,
  • José Ângelo Peixoto da Costa,
  • Gustavo de Novaes Pires Leite,
  • Márcio Vilar,
  • Kilvio Alessandro Ferraz and
  • Paula Suemy Arruda Michima

7 April 2025

This study seeks to investigate the heat dissipation process in a minichannel heat exchanger, commonly employed for cooling electronic components. The analysis centers on two key factors: global thermal resistance (GTR) and the heat transfer coeffici...

  • Article
  • Open Access
777 Views
16 Pages

7 April 2025

A steel–concrete composite beam with a straddle monorail is a lightweight and easily installable structure. The mechanical performance of group stud connectors and their arrangement are key design parameters that govern the beam’s overall...

  • Article
  • Open Access
1,018 Views
16 Pages

7 April 2025

A surface acoustic wave-based NO2 sensor and its interface electronics, utilizing monolayered two-dimensional sensing materials, were developed for internal pollution monitoring in spacecraft. The sensor system consists of a two-port SAW delay line w...

  • Article
  • Open Access
2 Citations
874 Views
19 Pages

7 April 2025

Given that rotating machinery is one of the most commonly used types of mechanical equipment in industrial applications, the identification of its health status is crucial for the safe operation of the entire system. Traditional equipment health stat...

  • Article
  • Open Access
2 Citations
1,740 Views
28 Pages

Blockchain-Based UAV-Assisted Mobile Edge Computing for Dual Game Resource Allocation

  • Shanchen Pang,
  • Yu Tang,
  • Xue Zhai,
  • Siyuan Tong and
  • Zhenghao Wan

7 April 2025

UAV-assisted mobile edge computing combines the flexibility of UAVs with the computing power of MEC to provide low-latency, high-performance computing solutions for a wide range of application scenarios. However, due to the highly dynamic and heterog...

  • Article
  • Open Access
646 Views
16 Pages

7 April 2025

Solving the Euler equations often requires expensive computations of complex, high-order time derivatives. Although Taylor Discontinuous Galerkin (TDG) schemes are renowned for their accuracy and stability, directly evaluating third-order tensor deri...

  • Article
  • Open Access
1,025 Views
17 Pages

Bubble Temperature Effect on the Heat Transfer Performance of R449a During Flow Boiling Inside a Horizontal Smooth Tube

  • Andrea Lucchini,
  • Bharath Nagaraju,
  • Igor Matteo Carraretto,
  • Luigi Pietro Maria Colombo,
  • Domenico Mazzeo,
  • Luca Molinaroli and
  • Paola Grazia Pittoni

7 April 2025

Since the Montreal Protocol (dated 1987), the reduction of the environmental impact has been one of the main goals in the HVAC sector, which has led to the replacement of widely used fluids with new environmentally friendly ones. Nevertheless, only n...

  • Article
  • Open Access
1,464 Views
21 Pages

7 April 2025

In multicriteria decision-making (MCDM), methods such as TOPSIS are essential for evaluating and comparing alternatives across multiple criteria. However, traditional normalization techniques often struggle with datasets containing outliers, large va...

  • Review
  • Open Access
2 Citations
2,949 Views
19 Pages

An Overview of Shared Mobility Operational Models in Europe

  • Luka Vidan,
  • Marko Slavulj,
  • Ivan Grgurević and
  • Matija Sikirić

7 April 2025

Climate change is an urgent issue, and the current mindset of private ownership, particularly of private vehicles, needs to shift. Shared mobility is rapidly emerging as a key part of the solution to contemporary transportation challenges, driven by...

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Appl. Sci. - ISSN 2076-3417