A5100686522- Tribology and Lubrication Engineering
- Magnetic Bearings and Levitation Dynamics
- Gear and Bearing Dynamics Analysis
- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Vibration Control and Rheological Fluids
- Vibration and Dynamic Analysis
- Microwave Engineering and Waveguides
- Bladed Disk Vibration Dynamics
- Mechanical stress and fatigue analysis
- Dynamics and Control of Mechanical Systems
- Advanced Computational Techniques and Applications
- Simulation and Modeling Applications
- Structural Engineering and Vibration Analysis
- Seismic Performance and Analysis
- Electromagnetic Launch and Propulsion Technology
- Brake Systems and Friction Analysis
- Industrial Technology and Control Systems
- Mechanical Engineering and Vibrations Research
- Innovative concrete reinforcement materials
- Structural Health Monitoring Techniques
- Adhesion, Friction, and Surface Interactions
- Stock Market Forecasting Methods
- Acoustic Wave Phenomena Research
- Structural Analysis and Optimization
Beihang University
2015-2025
Fujian Medical University
2024
Shanxi Coal Transportation and Sales Group (China)
2024
Gansu Provincial Hospital
2022
Lanzhou University
2022
Ningxia Medical University
2022
First Hospital of Lanzhou University
2022
Facing Our Risk of Cancer Empowered
2021
China University of Petroleum, Beijing
2021
Cixian People's Hospital
2020
Fly ash (FA) and granulated blast furnace slag (GBFS) were used as a precursor for geopolymerization to develop low-carbon pavement base construction material. Based on the orthogonal test method, three levels set separately L9 (34) considering proportion of FA (raw fly grained ash), ratio sodium hydroxide liquid alkaline activator (LAA), GBFS mixed with solid–liquid [(FA + GBFS): LAA] factors influencing geopolymer. The influence these unconfined compressive strength (UCS) soil stabilized...
Mechanical properties, workability and pore structures of foamed concrete (FC) reinforced with different fibres were investigated. In order to characterise the cementitious matrix entrained bubbles fibres, X-ray computed tomography (X-CT) technology Digital image correlation (DIC) technique employed analyse structure real-time strain field distributions under applied loads, respectively. The results demonstrated that inherent properties including density, modulus wettability, bond...
This paper describes the structural characteristics of metal rubber (MR) evaluated by X-ray tomography and skeletonisation at microscopic scale. The parameters used to describe internal structure MR were numerically extracted compared assess effect different manufacturing on mechanical properties material. Quasi-static tests also performed obtain stiffness damping porous material understand their correlation with topology defining samples. A simplified helix cell model was interpret based...
The dynamic response of the rotor depends on not only itself but also dynamical characteristics structures that support it. In this paper, coupling vibration and supporting structure are studied using one simple rotor-supports model firstly, then stiffness typical an aero-engine is investigated in use both numerical experimental methods. While, simulation strategy developed to include realistic supports analysis system. simulated tested results show structural parameters related frequency...
Abstract To achieve a highly efficient conical shaft design in aviation gas turbine engine’s rotor system, firstly, 4-DOF cantilevered model is established to investigate the effects of lateral, angular and cross stiffness on resonance speed pitching mode. The results show that increasing lateral stiffness, while reducing beneficial for raising critical Subsequently, using finite element method, relationships between cone angle, dimensionless radius, span, stiffnesses are calculated. It...
The dynamic influence of joints in aero-engine rotor systems is investigated this paper. Firstly, the tangential stiffness and loss factor are obtained from an isolated lap joint setup with excitation experiments. Also, normal contact pressure level examined, which revel uncertainty joints. Then, updated Thin Layer Elements (TLEs) method fitted parameters based on experiments established to simulate properties interface. response subjected unbalance calculated, results illustrate...
AbstractThis paper proposes a novel concept and methodology to study longitudinal wave propagation in entangled metallic wire material (EMWM), porous structural network consisting of spatial helix wires. The numerical model EMWM is constructed using representative volume elements (RVE) obtained through X-ray tomography skeletonization standard specimen. By increasing the approximate periodic boundary, improved finite ele-ment method (WFE) employed as approximately structures, allowing for...
<abstract> <p>Algorithmic trading is one of the most concerned directions in financial applications. Compared with traditional strategies, algorithmic applications perform forecasting and arbitrage higher efficiency more stable performance. Numerous studies on models using deep learning have been conducted to analysis. In this article, we firstly summarize several methods that shown good performance applications, briefly introduce some trading. We then try provide latest snapshot...
Background: Dual homeoboxes A pseudogene 8 (DUXAP8) is a newly discovered long noncoding RNA that has been shown to function as an oncogene in variety of human malignant cancers. By integrating available data, this meta-analysis sought determine the relationship between clinical prognosis and DUXAP8 expression levels diverse malignancies. Materials methods: systematic search was performed identify eligible studies from several electronic databases their inception 25 October 2021. Pooled odds...
Uncertainty is extensively involved in the rotor systems of rotating machinery, which may cause an unstable vibrational response. To take uncertainty into consideration for uncertain rotor-bearing system, improved unified interval analysis method based on Chebyshev expansion established this paper. Firstly, Interval Method (CIM) to calculate not only critical speeds but also dynamic response with parameters introduced. Then, numerical investigation carried out developed double disk model and...
Purpose The purpose of this paper is to analyze the trading behaviors retail investors and investigate their impacts on stock returns. Design/methodology/approach As are considered as main noise traders in capital market, using records Chinese from 2005 2009, authors study preferences correlation trades. Then, they use a multifactor model test whether co‐movement returns could be explained by individual sentiment. Findings authors' results show that small‐cap stocks obviously preferred...
An adaptive image-processing method for CT images of asphalt mixture is proposed in this paper. Different methods are compared according to the error analysis calculated between real gradation and 3D reconstruction gradation. As revealed by test results, was effective carrying out different brightness homogenization processes each image. The Wiener filter with 7 × size able produce a better noise reduction effect without compromising image sharpness. Among three methods, performed best...