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Applied Sciences, Volume 15, Issue 14

2025 July-2 - 497 articles

Cover Story: Acoustic metamaterials (AMs) are artificially structured materials composed of subwavelength units that enable acoustic phenomena not achievable with conventional materials and structures. This review defines and presents a distinct category referred to as soft acoustic metamaterials (SAMs), which use soft materials or reconfigurable structures to achieve enhanced acoustic functionality. These systems make use of the inherent flexibility of their materials or the deformability of their geometry to support passive, active, and adaptive functions. This review presents a structured classification for soft acoustic metamaterials and offers a foundation for future research, with broad potential in intelligent sound systems, wearable acoustics, and architectural applications. View this paper
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Articles (497)

  • Article
  • Open Access
1 Citations
1,382 Views
21 Pages

Fuzzy Model Predictive Control for Unmanned Helicopter

  • Łukasz Kiciński and
  • Sebastian Topczewski

21 July 2025

Unmanned helicopters, due to their agility and strong dependence on environmental conditions, require using advanced control techniques in order to ensure precise trajectory tracking in various states of flight. The following paper presents a methodo...

  • Article
  • Open Access
1 Citations
909 Views
23 Pages

A Systematic Analysis of Influencing Factors on Wind Resilience in a Coastal Historical District of China

  • Bo Huang,
  • Zhenmin Ou,
  • Gang Zhao,
  • Junwu Wang,
  • Lanjun Liu,
  • Sijun Lv,
  • Bin Huang and
  • Xueqi Liu

21 July 2025

Historical districts are the mark of the continuity of urban history and are non-renewable. Typhoon disasters rank among the most serious and frequent natural threats to China’s coastal regions. Improving the wind resilience of China’s co...

  • Article
  • Open Access
1,187 Views
16 Pages

External and Internal Load Response to Different Refereeing Techniques and to Sex of Players in Basketball Games

  • David Mancha-Triguero,
  • Alberto Sánchez-Sixto,
  • Carlos D. Gómez-Carmona and
  • Eduardo Salazar-Martínez

21 July 2025

Basketball referees play a crucial role in game management, yet the physical and physiological demands placed on them during a game remain understudied. This study analyzed the workload of 35 group 1 referees during a U-18 Spanish championship, exami...

  • Article
  • Open Access
1 Citations
2,086 Views
20 Pages

The Influence of Hard Protection Structures on Shoreline Evolution in Riohacha, Colombia

  • Marta Fernández-Hernández,
  • Luis Iglesias,
  • Jairo Escobar,
  • José Joaquín Ortega,
  • Jhonny Isaac Pérez-Montiel,
  • Carlos Paredes and
  • Ricardo Castedo

21 July 2025

Over the past 50 years, coastal erosion has become an increasingly critical issue worldwide, and Colombia’s Caribbean coast is no exception. In urban areas, this challenge is further complicated by hard protection structures, which, while often...

  • Article
  • Open Access
2 Citations
3,646 Views
32 Pages

21 July 2025

This study presents the design and validation of an integrated fire safety system that leverages edge AI, hybrid sensing, and precision suppression to overcome the latency and collateral limitations of conventional smoke detection and sprinkler syste...

  • Article
  • Open Access
3 Citations
1,278 Views
22 Pages

21 July 2025

The architectural, engineering, construction, and operation (AECO) sector is one of the main contributors to energy consumption and greenhouse gas emissions in Europe, making the renovation of the existing building stock a priority. However, defining...

  • Article
  • Open Access
4 Citations
1,103 Views
15 Pages

21 July 2025

This paper presents the results of a comprehensive study of the structure, phase composition, thermal corrosion, and tribological properties of multilayer gradient coatings based on YSZ/NiCrAlY obtained using detonation spraying. X-ray phase analysis...

  • Article
  • Open Access
797 Views
19 Pages

Peculiarities of Assessing Body Strength When Converting a Bus from Diesel to Electric Traction Following the UNECE R100 Regulation

  • Kostyantyn Holenko,
  • Oleksandr Dykha,
  • Eugeniusz Koda,
  • Ivan Kernytskyy,
  • Orest Horbay,
  • Yuriy Royko,
  • Ruslan Humeniuk,
  • Yaroslav Sholudko,
  • Vasyl Rys and
  • Anna Markiewicz
  • + 2 authors

21 July 2025

The problem of the conversion of diesel buses to electric ones in connection with the inevitable introduction of the EURO 7 emission standards entails an automatic requirement to follow several additional United Nations Economic Commission for Europe...

  • Article
  • Open Access
1,019 Views
17 Pages

21 July 2025

In this paper, we aim to develop an efficient algorithm for the solving Tensor Robust Principal Component Analysis (TRPCA) problem, which focuses on obtaining a low-rank approximation of a tensor by separating sparse and impulse noise. A common appro...

  • Article
  • Open Access
1,139 Views
15 Pages

21 July 2025

In order to explore the influence of the temperature gradient on rock failure degree during freezing and thawing, freeze–thaw-cycle tests were carried out on saturated red sandstone under the conditions of all-directional freeze–thaw and...

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Appl. Sci. - ISSN 2076-3417