A5101297324- Spectroscopy and Laser Applications
- Laser Design and Applications
- Water Quality Monitoring and Analysis
- Advanced Photocatalysis Techniques
- Air Quality Monitoring and Forecasting
- Atomic and Subatomic Physics Research
- Atmospheric and Environmental Gas Dynamics
- Infant Development and Preterm Care
- ZnO doping and properties
- Advanced Semiconductor Detectors and Materials
- Infrared Target Detection Methodologies
- Advanced Wireless Communication Technologies
- Electromagnetic Launch and Propulsion Technology
- MXene and MAX Phase Materials
- Advanced Optical Sensing Technologies
- Rocket and propulsion systems research
- Black Holes and Theoretical Physics
- Neonatal Respiratory Health Research
- stochastic dynamics and bifurcation
- UAV Applications and Optimization
- Nonlinear Dynamics and Pattern Formation
- Iron and Steelmaking Processes
- Relativity and Gravitational Theory
- Radar Systems and Signal Processing
- Advanced Chemical Sensor Technologies
Beijing University of Posts and Telecommunications
2024
Chinese Academy of Sciences
2020-2024
Hefei Institutes of Physical Science
2024
Nanjing University of Science and Technology
2024
Chongqing University
2023
Institute of New Materials
2023
Southeast University
2023
Anhui Institute of Optics and Fine Mechanics
2020-2021
University of Science and Technology of China
2021
This paper proposes a joint sensing, communication and computation (JSCC) framework in unmanned aerial vehicle (UAV)-assisted systems, where multi-functional terminal devices (TDs) can perform high-accuracy radar sensing as well offload data to an airborne mobile edge computing (MEC) server over the same frequency band. The key objective of JSCC is simultaneously minimize transmitted beampattern matching error whilst maximizing minimum efficiency TDs. problem formulated multi-objective...
We discuss the intrinsic relations between thermodynamic phase transitions and quasinormal modes in regular AdS black holes, specifically Bardeen Hayward classes. To this end, we calculate of massless scalar field perturbations around small large holes via Horowitz-Hubeny method. By investigating isobaric isothermal for detail, observe that a dramatic change appears near transition point it corresponds to swallow tail structure plane Gibbs free energy with respect pressure. Moreover, by...
When ultraviolet (UV) absorption spectroscopy technology is used for nitric oxide (NO) detection, the background noise will directly affect accuracy of concentration inversion, especially in low concentrations. Traditional processing methods attempt to eliminate noise, which damages spectrum characteristics. However, stochastic resonance (SR) can utilize extract a weak characteristic signal. This paper reports monostable (MSR) model an UV NO spectrum. By analyzing characteristics NO,...
In-situ laser absorption spectroscopy is commonly used for environmental monitoring and industrial process control, but fluctuations in field conditions can affect measurement accuracy stability. In the wavelength modulated (WMS) technique, first harmonic or DC signal often light intensity normalization, which to a certain extent weakens influence of caused by vibration, turbulence, etc. optical path. However, simultaneous extraction different signals from same absorbed spectrum using...
ZnO whiskers have many applications, such as in medical and photocatalysis fields. In this study, an unconventional preparation approach is reported, realizing the in-situ growth of on Ti2ZnC. The weak bonding between layer Ti6C-octahedron Zn-atom layers leads to easy extraction Zn atoms from Ti2ZnC lattice points, resulting formation surface. This first time that been found grow substrate. Further, phenomenon amplified when size grains mechanically reduced by ball-milling, which bodes a...
Based on our original development of a new laser absorption spectroscopy chamber (LASC) system, we further report ammonia emission concentration measurement using the LASC system based deep belief networks (DBNs), aiming to present an effective approach for retrieval gas increase accuracy and expand its application monitoring in farmland. Surrounding experimental was constructed, DBN algorithm introduced retrieval. The obtained by first pretreated empirical wavelet transform principal...
In response to the low efficiency of a muzzle brake for certain 30 mm airplane gun, new type with side ports tilted towards rear barrel is proposed. Taking flow state internal gas at moment projectile reaches as initial condition, dynamic mesh method combining polyhedral stationary region and hexahedral structured moving used perform three-dimensional numerical simulation field considering motion projectile. The influence number port rows angle inclination on analyzed. results show that...
Ultraviolet (UV) spectroscopy is widely applied in real-time environmental monitoring, especially diesel vehicle nitrogen monoxide (NO) emissions. However, field experiments, UV absorption spectrum may exist for different degrees of drifts. Spectral jitters various reasons such as optical power variation, electrical signal drift, and the refractive index path an extended period time, which causes detection system to be calibrated. And pulse xenon lamps source are characterized by specific...
Due to the important role of NH<sub>3</sub> in atmospheric aerosol chemistry, rapid and accurate inversion ammonia concentration is very for environmental issues. In this paper, a 9.05 μm continuous quantum cascade laser (QCL) used as light source at room temperature, scanned-wavelength direct-absorption tunable diode absorption spectroscopy (TDLAS) study spectral characteristics QCL 1103.4 cm<sup>–1</sup>. A low-pressure experimental platform based on two-level...