In recent decades, there has been a growing demand for eco-friendly unmanned aerial vehicles (UAVs) in both civilian and military domains. This has created interest among scholars and industry experts who envision Flying Ad-hoc Networks (FANETs) supplanting conventional networks in contexts such as surveillance, disaster management, precision agriculture, and logistics. Despite the constraints of UAV resources, it is crucial to optimize UAV resource utilization to extend network lifespan and uphold a satisfactory quality of experience (QoE). This study examines the application of the Fisheye State Routing (FSR) protocol to facilitate communication among multiple UAVs within a dynamic network... More >

Vietnam's Electric Vehicle (EV) market is expanding rapidly, yet public charging infrastructure development lags significantly, exhibiting pronounced spatial imbalance in dense urban cores. This study addresses this gap through an integrated demand forecasting and location optimization framework for District 1, Ho Chi Minh City. We develop a log-linear regression model using Vietnam's macroeconomic data (2003–2023), identifying GDP and CPI as dominant determinants of vehicle ownership (R$^2$ = 0.962). Forecasted vehicle stocks for 2026–2030 are translated into public charging demand through vehicle-type disaggregation and service-capacity modeling. Spatially, we propose a four-stage opti... More >

The traditional approach of manually selecting the parameters for LCL filters employed in single-phase grid-tied inverters is often ineffective and challenging to optimize. This can result in the LCL filter being unable to adequately attenuate high-frequency harmonics, causing the grid-injected current to not fully comply with IEEE 519 standards. Furthermore, the filtering performance can degrade when the system is coupled to a weak grid due to the inherent resonance issue of the LCL filter. To address these problems, this paper thoroughly examines the total harmonic distortion (THD) and resonance frequency of an LCL-filtered grid-tied inverter. An optimization function with three different... More >