Economía Circular
Economía Circular
Aerospace, Vol. 10, Pages 502: Experimental Analysis of Rotor Blade Noise in Edgewise Turbulence
25/05/2023 -
This paper presents an experimental investigation into the effects of turbulence ingestion on the aerodynamic noise characteristics of rotor blades in edgewise flight. A small-scaled, two-bladed...
The Current Development of Structural Health Monitoring for Bridges: A Review
23/05/2023 -
The health monitoring system of a bridge is an important guarantee for the safe operation of the bridge and has always been a research hotspot in the field of civil engineering. This paper reviews...
Low-Carbon Emission Demolition of an Existing Urban Bridge Based on SPMT Technology and Full Procedure Monitoring
25/05/2023 -
Due to the need for comprehensive transportation hub construction, an existing bridge in a bustling urban area with an operation duration of 25 years was required to be demolished. Based on Life...
A Side-Scan Sonar Image Synthesis Method Based on a Diffusion Model
23/05/2023 -
The limited number and under-representation of side-scan sonar samples hinders the training of high-performance underwater object detection models. To address this issue, in this paper, we propose a...
Electrochemical Shot Noise of a Redox Monolayer
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Redox monolayers are the base for a wide variety of devices including high-frequency molecular diodes or biomolecular sensors. We introduce a formalism to describe the electrochemical shot noise of...
PM2.5 concentration prediction using weighted CEEMDAN and improved LSTM neural network
22/05/2023 -
As the core of pollution prevention and management, accurate PM2.5 concentration prediction is crucial for human survival. However, due to the nonstationarity and nonlinearity of PM2.5...
Yb-Doped All-Fiber Amplifier with Low-Intensity Noise in mHz Range Oriented to Space-Borne Gravitational Wave Detection
22/05/2023 -
We present a low-intensity noise single-frequency Yb-doped all-fiber amplifier oriented to space-borne gravitational wave detection. Relative intensity noise (RIN) below −70 dBc/Hz @ 1...
Airborne and Underwater Noise Produced by a Hovercraft in the North Caspian Region: Pressure and Particle Motion Measurements
19/05/2023 -
The measurements of airborne and underwater noise radiated by a Griffon BHT130 hovercraft were conducted in the Ural-Caspian Channel and in the North Caspian Sea. This type of hovercraft is being...
Advanced Marine Craft Model Identification via Multi-Kernel Weighted Least Square Support Vector Machine and Characteristic Model Techniques
22/05/2023 -
This paper combines the piecewise Cubic Hermite (CH) interpolation algorithm and the weighted least square support vector machine (WLS-SVM) to improve identification accuracy for marine crafts built...
New Inogranic Scintillators’ Application in the Electromagnetic Calorimetry in High-Energy Physics
18/05/2023 -
Scintillation crystals Gd3Al2Ga3O12 (GAGG) are an excellent candidate for application in ionizing-radiation detectors because of their high radiation resistance, density and light yield. These...
Particulate Pollution from New Year Fireworks in Honolulu
19/04/2023 -
Fireworks have long been a problem in Hawaii despite restrictions on their use. They cause accidents and high levels of noise and air pollution and are accompanied by admissions to hospitals from...
Aerospace, Vol. 10, Pages 449: Multi-Scale Local Contrast Fusion Based on LOG in Infrared Small Target Detection
12/05/2023 -
The infrared detector is adopted to track and recognize targets, including missiles and airplanes. These targets are usually far from the detector. The pixel size is less than 9×9 when the...
Aerospace, Vol. 10, Pages 447: Assessment of the Vortex Feature-Based Vorticity Confinement Method Applied to Rotor Aerodynamics and Aeroacoustics
12/05/2023 -
The accurate prediction of helicopter rotor aerodynamics and aeroacoustics using Computational Fluid Dynamics (CFD) techniques still remains a challenge, as the over-dissipation of numerical schemes...
Aerospace, Vol. 10, Pages 439: Prediction of Aircraft Surface Noise in Supersonic Cruise State
08/05/2023 -
The aerodynamic noise of an aircraft leads to vibration fatigue damage to structures. Herein, a prediction method for aircraft surface noise under the comprehensive effect of mixed acoustic sources...
Aerospace, Vol. 10, Pages 431: LEO Satellite Navigation Based on Optical Measurements of a Cooperative Constellation
03/05/2023 -
Autonomous, anti-jamming, and high-precision satellite navigation are of great importance to current and future space technologies. This paper proposes a cooperative constellation navigation system...
Aerospace, Vol. 10, Pages 391: Development of a High-Performance Low-Weight Hydraulic Damper for Active Vibration Control of the Main Rotor on Helicopters—Part 1: Design and Mathematical Model
24/04/2023 -
The helicopter vibrations generated by the main rotor/gearbox assembly are the principal cause of damage to cockpit instruments and discomfort of the crew in terms of cabin noise. The principal path...
Semantic Segmentation with High-Resolution Sentinel-1 SAR Data
14/05/2023 -
The world’s high-resolution images are supplied by a radar system named Synthetic Aperture Radar (SAR). Semantic SAR image segmentation proposes a computer-based solution to make...
Learning Logical Pauli Noise in Quantum Error Correction
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The characterization of quantum devices is crucial for their practical implementation but can be costly in experimental effort and classical postprocessing. Therefore, it is desirable to measure only...
Aerospace, Vol. 10, Pages 360: A Numerical Study on the Flap Side-Edge Noise Reduction Using Passive Blowing Air Concept
07/04/2023 -
The flap side-edge is a vital contributor to airframe noise. In this study, we propose a novel flap side-edge noise reduction method based on the concept of active blowing air. A long slot is opened...
