A5086466347- Geotechnical Engineering and Analysis
- Rock Mechanics and Modeling
- Geomechanics and Mining Engineering
- Geoscience and Mining Technology
- Dam Engineering and Safety
- Landslides and related hazards
- Geotechnical Engineering and Underground Structures
- Civil and Geotechnical Engineering Research
- Advanced Computational Techniques and Applications
- Probabilistic and Robust Engineering Design
- Drilling and Well Engineering
- Advanced Fiber Laser Technologies
- Solid State Laser Technologies
- Infrastructure Maintenance and Monitoring
- Industrial Technology and Control Systems
- Advanced Sensor and Control Systems
- Hydraulic Fracturing and Reservoir Analysis
- Simulation and Modeling Applications
- Numerical methods in engineering
- Innovative concrete reinforcement materials
- Remote Sensing and Land Use
- Soil, Finite Element Methods
- Advanced Decision-Making Techniques
- Concrete and Cement Materials Research
- Photorefractive and Nonlinear Optics
Shandong University of Technology
2020-2025
Yunnan Agricultural University
2025
Zhongyuan University of Technology
2025
Northeastern University
2025
Hunan University
2018-2024
Institute of Rock and Soil Mechanics
2004-2023
Northwest Institute of Mechanical and Electrical Engineering
2023
Northwest A&F University
2023
Henan University
2006-2023
Central South University
2022-2023
In this study, a novel symbolic regression-based empirical equation has been developed to compute the joint roughness coefficient (JRC) value based on statistical parameters of rock joints. The regression was adopted map nonlinear function, which represents relation between JRC and joint, collected dataset. It is not necessary presume mathematical function form equation, used fit data while using regression. samples from literature were investigate illustrate equation. performance compared...
<b>BACKGROUND AND PURPOSE:</b> Nonalcoholic Wernicke encephalopathy (WE) is prone to be underestimated in clinical practice. The purpose of this study was improve its awareness and early accurate diagnosis. <b>Materials METHODS:</b> We conducted a retrospective review the cases 12 patients with nonalcoholic WE, consisting characteristics MR imaging features as well follow-up after administration thiamine. <b>RESULTS:</b> Patients mild coma or lethargy (7/12) exhibited typical symmetric brain...
The hybrid action of quantum-dot saturable absorber and Kerr-lens mode locking in a diode-pumped Yb:KGW laser was demonstrated. Using with 0.7% (0.5%) modulation depth, the mode-locked delivered 90 fs (93 fs) pulses 3.2 W (2.9 W) average power at repetition rate 77 MHz, corresponding to 462 kW (406 kW) peak 41 nJ (38 nJ) pulse energy. To best our knowledge, this represents highest powers generated date from absorber-based lasers.
Uncertainty is an essentially challenging for safe construction and long-term stability of geotechnical engineering. The inverse analysis commonly utilized to determine the physico-mechanical parameters. However, conventional cannot deal with uncertainty in geological systems. In this study, a framework was developed evaluate quantify based on reduced-order model (ROM) probabilistic programming. ROM capture mechanical deformation properties surrounding rock mass geomechanical problems....
Shear stress concentrations may promote damage and failure processes. Quantities of studies have focused on the direct shear loading test, while analytical model has not yet been studied in depth. Aiming to fill knowledge gap, theoretical numerical analyses distribution band were investigated. In order reflect variation state, differential element method was first used. The equation derived from equilibrium, geometric physical equations. plotted, using proposed equation. After that, ratio...
SUMMARY This paper examines the potential of relevance vector machine (RVM) in slope stability analysis. The nonlinear relationship between and its influence factors is presented by learning mechanism based on a kernel‐based Bayesian framework. six input variables used for RVM prediction are density (γ), friction angle ( C ), coefficient (ϕ), (ϕ r height H pore water pressure u ). Comparison with some other methods also presented. has been to compute error bar. results this clearly highlight...
Abstract Displacement back analysis is a common method to identify mechanical geo‐material parameters using the monitored displacement. How obtain global optimum solution in large space search of highly non‐linear multimodal key point analysis. The paper presents new that an integration evolutionary support vector machines (SVMs), numerical and genetic algorithm. relationship between be identified corresponding displacement values points learned represented by SVMs optimum. Numerical used...
Ultrashort pulses with wavelength tuning in the visible and near-infrared (VNIR) ranges (here approximately 680 to 2000 nm) have wide application many biomedical devices especially imaging spectroscopy. The theoretical studies here consider phase-matching conditions of three periodically poled crystals (PPKTP, MgO:PPcLN MgO:PPSLT) use for femtosecond optical parametric oscillators (OPO) generate tunability this range. basic properties are calculated respect different grating periods...
A polarization-independent pumping scheme for an end-pumped Yb:KGd(WO4)2 laser oscillator is proposed. It enables the use of compact, high power and brightness fiber-coupled diode modules as pump sources results in reduced thermal effects, good beam quality improved output stability. Based on this design, a continuous wave Yb:KGW with demonstrated. The delivered 2 W average TEM00 mode at 1040 nm. induced lens by factor when compared to conventional schemes, which clearly demonstrates...
Rock mechanical parameters and their uncertainties are critical to rock stability analysis, engineering design, safe construction in mechanics engineering. The back analysis is widely adopted determine the of surrounding mass, but this does not consider uncertainty. This problem addressed here by proposed approach developing a system Bayesian inferences for updating statistical properties using monitored field data, then integrating prior knowledge geotechnical parameters, model tunnel...
Displacement is vital in the evaluations of tunnel excavation processes, as well determining post-excavation stability surrounding rock masses. The prediction displacement a complex problem because uncertainties mass properties. Meanwhile, variation and correlation relationship geotechnical material properties have been gradually recognized by researchers recent years. In this paper, novel probabilistic method proposed to estimate displacement, which integrated multivariate distribution...