doaj: Recent submissions
Now showing items 1041-1060 of 7775
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2025-10-08Article
Dynamic Resource Target Assignment Problem for Laser Systems’ Defense Against Malicious UAV Swarms Based on MADDPG-IA
(MDPI AG, 01-08-2025)The widespread adoption of Unmanned Aerial Vehicles (UAVs) in civilian domains, such as airport security and critical infrastructure protection, has introduced significant safety risks that necessitate effective countermeasures. ... -
2025-10-08Article
A Framework for an ML-Based Predictive Turbofan Engine Health Model
(MDPI AG, 01-08-2025)A predictive health modeling framework was developed for a family of turbofan engines, focusing on early detection of performance degradation. Turbine Gas Temperature (TGT) was employed as the primary indicator of engine ... -
2025-10-08Article
Multi-Agent Reinforcement Symbolic Regression for the Fatigue Life Prediction of Aircraft Landing Gear
(MDPI AG, 01-08-2025)Accurate fatigue life prediction of aircraft landing gear is crucial for ensuring flight safety and preventing catastrophic structural failures. However, traditional empirical methods face significant limitations in capturing ... -
2025-10-08Article
Social stigma towards people with HIV/AIDS, in dentistry students from Concepción
(Chilean Society of Periodontology, 01-04-2024)Objective: Characterize HIV/AIDS Social stigma towards people with HIV/AIDS in a sample of dentistry students from Concepción. Materials and methods: Cultural adaptation and pre-test were developed for the Stigma and ... -
2025-10-08Article
Numerical Study on Shape Recovery Behaviors of Shape Memory Polymer Composite Hinges Considering Hysteresis Effect
(MDPI AG, 01-08-2025)Shape memory polymer composite (SMPC) hinges have been researched as deployable structures in space missions due to their stable and controllable shape recovery behaviors. The elastic energy of the fabrics plays a dominant ... -
2025-10-08Article
Game Theory-Based Leader–Follower Tracking Control for an Orbital Pursuit–Evasion System with Tethered Space Net Robots
(MDPI AG, 01-08-2025)The tethered space net robot offers an effective solution for active space debris removal due to its large capture envelope. However, most existing studies overlook the evasive behavior of non-cooperative targets. To address ... -
2025-10-08Article
Research on Real-Path-Based UAV Distribution Center Layout in Urban Environments
(MDPI AG, 01-08-2025)The growing adoption of unmanned aerial vehicles (UAVs) for urban parcel delivery highlights the need for efficient distribution center placement. Particularly in dense urban environments, obstacle avoidance usually increases ... -
2025-10-08Article
ROS-Based Multi-Domain Swarm Framework for Fast Prototyping
(MDPI AG, 01-08-2025)The integration of diverse robotic platforms with varying payload capacities is a critical challenge in swarm robotics and autonomous systems. This paper presents a robust, modular framework designed to manage and coordinate ... -
2025-10-08Article
A CAD-Based Method for 3D Scanning Path Planning and Pose Control
(MDPI AG, 01-07-2025)To address the technical bottlenecks of low path planning efficiency and insufficient point cloud coverage in the automated 3D scanning of complex structural components, this study proposes an offline method for the ... -
2025-10-08Article
OSIRIS4CubeSat—The World’s Smallest Commercially Available Laser Communication Terminal
(MDPI AG, 01-07-2025)The New Space movement led to an exponential increase in the number of the smallest satellites in orbit in the last two decades. The number of required communication channels increased with that as well and revealed the ... -
2025-10-08Article
A New Methodological Approach to the Reachability Analysis of Aerodynamic Interceptors
(MDPI AG, 01-07-2025)Advanced air defense methods are essential to address the growing complexity of aerial threats. The increasing number of targets necessitates better defensive coordination, and a promising strategy involves the use of ... -
2025-10-08Article
Backstepping-Based Finite-Horizon Optimization for Pitching Attitude Control of Aircraft
(MDPI AG, 01-07-2025)In this paper, the problem of pitching attitude finite-horizon optimization for aircraft is posed with system uncertainties, external disturbances, and input constraints. First, a neural network (NN) and a nonlinear ... -
2025-10-08Article
Rarefied Reactive Gas Flows over Simple and Complex Geometries Using an Open-Source DSMC Solver
(MDPI AG, 01-07-2025)During atmospheric reentry, a significant number of chemical reactions are produced inside the high-temperature shock wave formed upstream of the spacecraft. Chemical reactions can significantly alter the flowfield structure ... -
2025-10-08Article
Multi-Fidelity Modeling of Isolated Hovering Rotors
(MDPI AG, 01-07-2025)Surrogate modeling has been rapidly evolving in the field of aerospace engineering, further reducing the cost of computational analyses. These models often require large amounts of information to learn the underlying ... -
2025-10-08Article
Green Economy as a Driver of Corporate Social Responsibility: Opportunities and Challenges for MSEs
(MDPI AG, 01-08-2025)This research addresses the difference between the green economy and corporate social responsibility (CSR), focusing on micro, small, and medium-sized enterprises (MSEs) that produce textiles such as fabrics, clothing, ... -
2025-10-08Article
Leadership for a Sustainable Future: Insights from Civil Engineering and Architectural Professionals
(MDPI AG, 01-08-2025)This study explores the extent to which civil engineers and architects in Spain perceive sustainable leadership practices in their organizations. The main aim is to understand how leadership approaches in the built environment ... -
2025-10-08Article
The Role of Financial Institutions in Bridging the Financing Gap for Women Entrepreneurs in Sub-Saharan Africa
(MDPI AG, 01-08-2025)Small and Medium Enterprises (SMEs) are vital to economic growth, innovation, and job creation across Sub-Saharan Africa (SSA). Women entrepreneurs are key contributors to this sector, yet they face persistent barriers to ... -
2025-10-08Article
Modeling Generative AI and Social Entrepreneurial Searches: A Contextualized Optimal Stopping Approach
(MDPI AG, 01-08-2025)This theoretical study rigorously investigates how generative artificial intelligence reshapes decision-making in social entrepreneurship by modeling the opportunity search process through the lens of optimal stopping ... -
2025-10-08Article
Pioneering Public Sector Innovation: The Case of Greece’s e-Government Team
(MDPI AG, 01-08-2025)This study offers the first systematic exploration of the Greek e-Government team, a public sector innovation unit that operated within the Office of the Prime Minister of Greece from 2009 to 2012—the sole example of such ... -
2025-10-08Article
Learning and Development in Entrepreneurial Era: Mapping Research Trends and Future Directions
(MDPI AG, 01-07-2025)The age of entrepreneurship calls for the evolving of learning and development (L&D) models to meet the dynamic demands of innovation, sustainability, and technology innovation. This study examines the trends and issues ...