A5011278404- Building Energy and Comfort Optimization
- Infection Control and Ventilation
- Structural Health Monitoring Techniques
- Optical measurement and interference techniques
- Electromagnetic Scattering and Analysis
- Electromagnetic Simulation and Numerical Methods
- Wind and Air Flow Studies
- Catalytic Processes in Materials Science
- Microwave Engineering and Waveguides
- Advanced Fiber Optic Sensors
- Antenna Design and Analysis
- Electromagnetic Compatibility and Measurements
- Catalysis and Oxidation Reactions
- Indoor Air Quality and Microbial Exposure
- Urban Heat Island Mitigation
- Advanced Measurement and Metrology Techniques
- Noise Effects and Management
- Railway Engineering and Dynamics
- Antenna Design and Optimization
- Advanced Antenna and Metasurface Technologies
- Advanced Optimization Algorithms Research
- Catalysis and Hydrodesulfurization Studies
- Electrocatalysts for Energy Conversion
- Surface Roughness and Optical Measurements
- Ionosphere and magnetosphere dynamics
Wuhan University of Technology
2025
Aalto University
2019-2024
Ludong University
2024
General Research Institute for Nonferrous Metals (China)
2023-2024
Grinm Advanced Materials (China)
2023-2024
Xiamen Institute of Rare-earth Materials
2024
Syracuse University
2008-2016
Kansas State University
2004-2014
London Bridge Hospital
2011
Radboud University Nijmegen
2011
The objective of this paper is to investigate a methodology, which can extract approximate results for the free space radiation pattern from non-anechoic measurements. Using an impulse response both in time and angular domains measurement environment, device under test estimated. purpose is, as opposed what has been stated some papers, show that deconvolution based technique feasible reflection compensation proposed method also be applied at single frequency illustrated paper. Simulated data...
Aerosols are one of the major sources cross-infection. The main purpose this study is to analyze effects heat gain, airflow rate, air distribution, and location an infector on airborne transmission infection probability in a meeting room. In six-person room droplet nuclei infected person were simulated with tracer gas (SF6) generated by thermal breathing manikin. An overhead perforated duct (OPD) low velocity unit (LVU) used their performance was compared. With OPD, average contaminant...
In industrial applications, local exhaust systems have been used extensively for capturing and confining contaminants at their source. The present study investigates the efficacy of these in mitigating spread exhaled pollutants by combining them with mixing displacement ventilation. Experiments were conducted a simulated meeting room six closely situated workstations, featuring five exposed persons (simulated heated dummies) one infected person breathing manikin). Six overhead units, merged...
With the widespread application of fuel cell technology in fields transportation and energy, Battery Management Systems (BMSs) have become one key technologies for ensuring system stability extending battery lifespan. As an auxiliary power source systems, prediction Remaining Useful Life (RUL) lithium-ion batteries is crucial enhancing reliability efficiency ships. However, due to complex degradation mechanisms lithium actual noisy operating conditions, particularly capacity regeneration...
The purpose of this study is to analyze the human response indoor climate with two individually controlled convective and radiant cooling systems: a low velocity unit combined panel system (LVRP) personalized ventilation (PVRP). As reference without individual control, diffuse ceiling (DCV-RP) was also studied. In laboratory conditions, 10 males females gave subjective during various office activities. parameters CO2 concentrations were measured. results show that DCV-RP system, conditions...
Based on the recognized airborne infection risk, there is a raised demand to develop innovative ventilation systems mitigate transmission risk indoors. This paper focused two micro-environment systems, namely personalized combined with radiant panel system (PVRP) and local low velocity unit (LVRP) studied potential minimize risk. The performance was compared typical mixing system, where supply air released from perforated duct. droplet nuclei of an infected person were simulated tracer gas...
In this study, the performance of a micro-environment system was analysed and compared with diffused ceiling ventilation. low velocity radiant panel system, two units panels were installed above workstations to supply directly clean air occupants cover cooling power required. With ventilation, all demand is covered thus, airflow rate required higher than system. The varied heat gain from 40 80 W/m 2 consists seated dummies, laptops, monitors simulated solar gain. results show that perimeter...
The influence of occupants'’ movements should be considered when analysing local thermal comfort. This study presents the effect human movement on airflow characteristics and conditions with diffuse ceiling ventilation by experimental studies. A simulated person moving was used to in an office. In these experiments, three speeds were studied: 0.3, 0.6 1.0 m/s. moved four cycle patterns: continuous 5 s, 10 s 15 interval breaks between each turn. Three heat gain levels 40, 60 80 W/m 2...
To evaluate the thermal environment in classrooms, physical measurements were conducted laboratory conditions. The objective of study is to compare performance four typical air distribution methods both heating and cooling modes a mock-up classroom. included corridor-wall grille, displacement ventilation concept using two low-velocity units, ceiling diffuser, perforated duct diffuser. There three designed test condition classroom: summer conditions with full occupancy (heat gain 54 W/m2)...
One main challenge of air distribution in classrooms is to guarantee ventilation performance under different usage conditions. In this study, the indoor climate summer and winter conditions with occupancy densities classroom presented. Thermal condition measurements a half-size were performed test room four suppliers: wall-grilles, ceiling diffusers, perforated duct displacement ventilation. Those measured data used for CFD validation whole classroom. With simulations, parameters diffusers...
Abstract: Conventionally, transfer‐length strain measurements are performed using mechanical gauges such as the Whittemore gauge, or demountable (DEMEC) gauges, and others devices ‘contact’ measuring principles. These methods involve tedious surface preparation, also prone to significant human errors inaccuracies. Furthermore, these sensors can only detect lateral displacements. This paper presents a new optical sensor of prestress concrete strains. It makes use laser‐speckle displacement...
This paper describes a new method that has been developed for determining transfer lengths in pretensioned concrete members. rapid non-contact generates and digitally records laser-speckle patterns at various points along the prestressed member. The proposed technique was compared to conventional strain measurement methods laboratory experiments. Results show is more accurate produces reliable results than optical arrangement. It also requires minimal setup less operator training.
A study was conducted to determine the variation in transfer length of prestressed concrete railroad ties with different indented wire geometries and properties, including slump release strength. The included 12 reinforcement types that are used worldwide. This paper presents results from measurements on 96 pretensioned members were cast laboratory. In order replicate wire-to-concrete proportions commonly ties, small (3 1/2″ (88.9 mm) × 3 mm)) prisms fabricated each contained four...
The traditional experimental method to determine the transfer length in pretensioned concrete members consists of measuring surface strains before and after detensioning with a mechanical strain gauge. This is prone significant human error inaccuracies. In addition, because it time-consuming tedious process, lengths are seldom if ever measured on production basis for product quality assurance. A rapid noncontact determining railroad ties has been developed. new uses laser-speckle patterns...
Automated in-plant diagnostic testing of prestressed concrete railroad crossties is now within reach due to recent progress in robust surface strain measurement techniques. The newly developed non-contact Laser Speckle Imaging (LSI) technique has been shown provide rapid and accurate profile measurement, which a key requirement for transfer length assessment. Accurate determination critical maintaining continuous production quality the modern manufacture crossties. Conventional assessment...
A large scale low-profile traveling-wave narrow-wall slotted waveguide array with 2160 slots is analyzed by parallel method of moments (MoM) out-of-core solver based on the higher order basis functions (HOBs). Its accuracy validated through comparison finite element (FEM) adopted in commercial software Ansoft HFSS. An two-dimensional block-cyclic distribution scheme for dense full matrix filling and an LU (lower/upper) decomposition equation are utilized under message passing interface...