The goal of the Editor’s Choice Articles project is to promote high-quality articles published in Applied Sciences (ISSN: 2076-3417). Please find below the list of articles carefully handpicked by the scientific editors of the journal, which we believe will be of interest to you.

1. “A Survey on Robotic Technologies for Forest Firefighting: Applying Drone Swarms to Improve Firefighters’ Efficiency and Safety”
by Juan Jesús Roldán-Gómez, Eduardo González-Gironda and Antonio Barrientos
Appl. Sci. 2021, 11(1), 363; https://doi.org/10.3390/app11010363
Available online: https://www.mdpi.com/2076-3417/11/1/363

2. “Deep Learning Method for Fault Detection of Wind Turbine Converter”
by Cheng Xiao, Zuojun Liu, Tieling Zhang and Xu Zhang
Appl. Sci. 2021, 11(3), 1280; https://doi.org/10.3390/app11031280
Available online: https://www.mdpi.com/2076-3417/11/3/1280

3. “Multi-Resolution SPH Simulation of a Laser Powder Bed Fusion Additive Manufacturing Process”
by Mohamadreza Afrasiabi, Christof Lüthi, Markus Bambach and Konrad Wegener
Appl. Sci. 2021, 11(7), 2962; https://doi.org/10.3390/app11072962
Available online: https://www.mdpi.com/2076-3417/11/7/2962

4. “Rail Diagnostics Based on Ultrasonic Guided Waves: An Overview”
by Davide Bombarda, Giorgio Matteo Vitetta and Giovanni Ferrante
Appl. Sci. 2021, 11(3), 1071; https://doi.org/10.3390/app11031071
Available online: https://www.mdpi.com/2076-3417/11/3/1071

5. “Security Vulnerabilities in LPWANs—An Attack Vector Analysis for the IoT Ecosystem”
by Nuno Torres, Pedro Pinto and Sérgio Ivan Lopes
Appl. Sci. 2021, 11(7), 3176; https://doi.org/10.3390/app11073176
Available online: https://www.mdpi.com/2076-3417/11/7/3176

6. “A Literature Review of Energy Efficiency and Sustainability in Manufacturing Systems”
by Paolo Renna and Sergio Materi
Appl. Sci. 2021, 11(16), 7366; https://doi.org/10.3390/app11167366
Available online: https://www.mdpi.com/2076-3417/11/16/7366

7. “An Improved VGG19 Transfer Learning Strip Steel Surface Defect Recognition Deep Neural Network Based on Few Samples and Imbalanced Datasets”
by Xiang Wan, Xiangyu Zhang and Lilan Liu
Appl. Sci. 2021, 11(6), 2606; https://doi.org/10.3390/app11062606
Available online: https://www.mdpi.com/2076-3417/11/6/2606

8. “Effect of Hydrogen Addition on the Energetic and Ecologic Parameters of an SI Engine Fueled by Biogas”
by Saugirdas Pukalskas, Donatas Kriaučiūnas, Alfredas Rimkus, Grzegorz Przybyła, Paweł Droździel and Dalibor Barta
Appl. Sci. 2021, 11(2), 742; https://doi.org/10.3390/app11020742
Available online: https://www.mdpi.com/2076-3417/11/2/742

9. “A Five-Step Approach to Planning Data-Driven Digital Twins for Discrete Manufacturing Systems”
by Matevz Resman,Jernej Protner, Marko Simic and Niko Herakovic
Appl. Sci. 2021, 11(8), 3639; https://doi.org/10.3390/app11083639
Available online: https://www.mdpi.com/2076-3417/11/8/3639

10. “Application of an Additive Manufactured Hybrid Metal/Composite Shock Absorber Panel to a Military Seat Ejection System”
by Valerio Acanfora, Chiara Corvino, Salvatore Saputo, Andrea Sellitto and Aniello Riccio
Appl. Sci. 2021, 11(14), 6473; https://doi.org/10.3390/app11146473
Available online: https://www.mdpi.com/2076-3417/11/14/6473

11. “Digital Twin and Reinforcement Learning-Based Resilient Production Control for Micro Smart Factory”
by Kyu Tae Park, Yoo Ho Son, Sang Wook Ko and Sang Do Noh
Appl. Sci. 2021, 11(7), 2977; https://doi.org/10.3390/app11072977
Available online: https://www.mdpi.com/2076-3417/11/7/2977

12. “Impact Fracture and Fragmentation of Glass via the 3D Combined Finite-Discrete Element Method”
by Zhou Lei, Esteban Rougier, Earl E. Knight, Mengyan Zang and Antonio Munjiza
Appl. Sci. 2021, 11(6), 2484; https://doi.org/10.3390/app11062484
Available online: https://www.mdpi.com/2076-3417/11/6/2484

13. “Friction Stir Welding of 1Cr11Ni2W2MoV Martensitic Stainless Steel: Numerical Simulation Based on Coupled Eulerian Lagrangian Approach Supported with Experimental Work”
by Mohamed Ragab, Hong Liu, Guan-Jun Yang and Mohamed M. Z. Ahmed
Appl. Sci. 2021, 11(7), 3049; https://doi.org/10.3390/app11073049
Available online: https://www.mdpi.com/2076-3417/11/7/3049

14. “A Review on the Lifecycle Strategies Enhancing Remanufacturing”
by Raoul Fonkoua Fofou, Zhigang Jiang and Yan Wang
Appl. Sci. 2021, 11(13), 5937; https://doi.org/10.3390/app11135937
Available online: https://www.mdpi.com/2076-3417/11/13/5937

15. “Nano-Elicitation as an Effective and Emerging Strategy for In Vitro Production of Industrially Important Flavonoids”
by Amna Komal Khan, Sidra Kousar, Duangjai Tungmunnithum, Christophe Hano, Bilal Haider Abbasi and Sumaira Anjum
Appl. Sci. 2021, 11(4), 1694; https://doi.org/10.3390/app11041694
Available online: https://www.mdpi.com/2076-3417/11/4/1694

We would like to thank all of the research groups that authored these exceptional papers for their contribution. We sincerely hope you find these articles of Applied Sciences as useful and insightful as we have found them.