A5100390525- Model Reduction and Neural Networks
- Numerical methods for differential equations
- Fluid Dynamics and Turbulent Flows
- Catalytic C–H Functionalization Methods
- Sulfur-Based Synthesis Techniques
- Chaos control and synchronization
- Fluid Dynamics and Vibration Analysis
- Nonlinear Dynamics and Pattern Formation
- Fractional Differential Equations Solutions
- Synthesis and Catalytic Reactions
- Electromagnetic Simulation and Numerical Methods
- stochastic dynamics and bifurcation
- Turbomachinery Performance and Optimization
- Advanced Battery Technologies Research
- Enzyme Structure and Function
- Advanced X-ray Imaging Techniques
- Seismic Imaging and Inversion Techniques
- Neural Networks Stability and Synchronization
- Ferroelectric and Negative Capacitance Devices
- Lattice Boltzmann Simulation Studies
- Advanced Optical Sensing Technologies
- Radical Photochemical Reactions
- Advanced Battery Materials and Technologies
- Nonlinear Waves and Solitons
- Nuclear reactor physics and engineering
Hong Kong University of Science and Technology
2023-2025
University of Hong Kong
2023-2025
Fermi National Accelerator Laboratory
2024
Fudan University
2023-2024
Harbin Institute of Technology
2023
Southern University of Science and Technology
2018-2023
Xinjiang University
2017-2022
Wuhan Ship Development & Design Institute
2021
Changchun University of Science and Technology
2019
Xi'an Jiaotong University
2016
The development of mild and practical methods for the γ-arylation carbonyl compounds is an ongoing challenge in organic synthesis. first formal via radical relay cross-coupling α-bromocarbonyl precursors with boronic acids presence alkenes reported. This directing-group-free protocol allows rapid straightforward access to a wide range γ-arylated esters, ketones, amides under ambient conditions excellent functional group tolerance.
Abstract N- Arylation of NH -sulfoximines represents an appealing approach to access aryl sulfoximines, but has not been successfully applied -diaryl sulfoximines. Herein, a copper-catalyzed photoredox dehydrogenative Chan-Lam coupling free diaryl sulfoximines and arylboronic acids is described. This neutral ligand-free initiated by ambient light-induced single-electron reduction -sulfoximines. electron transfer route circumvents the sacrificial oxidant employed in traditional reactions,...
This work introduces MICSim, an open-source, pre-circuit simulator designed for early-stage evaluation of chip-level software performance and hardware overhead mixed-signal compute-in-memory (CIM) accelerators.MICSim features a modular design, allowing easy multi-level co-design design space exploration.Modularized from the state-of-the-art CIM NeuroSim, MICSim provides highly configurable simulation framework supporting multiple quantization algorithms, diverse circuit/architecture designs,...
X-ray crystallography reconstruction, which transforms discrete diffraction patterns into three-dimensional molecular structures, relies critically on accurate Bragg peak finding for structure determination. As free electron laser (XFEL) facilities advance toward MHz data rates (1 million images per second), traditional algorithms that require manual parameter tuning or exhaustive grid searches across multiple experiments become increasingly impractical. While deep learning approaches offer...
Abstract Sulfoximines, the isoelectronic with sulfones, represent a class of alternative and intriguing motifs in both discovery program agrochemistry. N ‐Alkylation on imines could significantly improve their bioactivities, but lack general method has hindered further uptake by medicinal chemistry drug development. Herein, we present mild photocatalytic anti‐Markovnikov hydroamination alkenes to construct ‐alkylated sulfoximines broad substrate tolerance primary, secondary tertiary alkyl...
The main purpose of this paper is to reveal the evolution mechanism bursting oscillation and suppress oscillation. permanent magnet synchronous motor (PMSM) system taken as a research object, case PMSM with periodic external load perturbation considered. first part in for analysis First, mathematical model non-autonomous established, frequency set be far less than natural system, so that has fast-slow coupling effect. Then, transformed into generalized autonomous by taking slow-varying...
Next generation High-Energy Physics (HEP) experiments are presented with significant computational challenges, both in terms of data volume and processing power. Using compute accelerators, such as GPUs, is one the promising ways to provide necessary power meet challenge. The current programming models for accelerators often involve using architecture-specific languages promoted by hardware vendors hence limit set platforms that code can run on. Developing software platform restrictions...
Sulfondiimines, which are isoelectronic with sulfones and sulfoximines, represent a neglected yet intriguing pharmacophore in the discovery program. Herein, we present facile mild photocatalytic anti-Markovnikov hydroamination of styrenes for construction N-alkylated sulfondiimines primary, secondary, tertiary alkyl substituents. A sulfondiimine-derived analogue marketed drug Vioxx was synthesized using this method as key step.
In this research, we introduce a deep-learning-based framework designed for the prediction of transonic flow through linear cascade utilizing large-scale point-cloud data. our experimental cases, predictions demonstrate nearly four-fold speed improvement compared to traditional CFD calculations while maintaining commendable level accuracy. Taking advantage multilayer graph structure, can extract both global and local information from field simultaneously present over unstructured line with...
In this paper, we investigate a class of hyperbolic distributed parameter systems(DPS), the Sine-Gordon (SG) equation with damp and driven. The plant is type partial differential equation(PDE) has been broadly applied for physics other relevant realms. Instead identifying parameters DPS, purpose paper to identify infinite-dimensional dynamics DPS. By using method lines translate DPS described by PDE into set ODEs, then are obtained deterministic learning theory represented constant radius...
The first- and second-order fractional-order proportional integral (FOPI) controllers based on the Al-Alaoui operator continued fraction expansion method are designed applied to closed-loop control system of a resonant optical gyro. phase margin is used tune parameters. characteristics unit step responses integer order (IOPI) FOPI calculated compared. Responses perturbations at different positions simulated. Results show that for gyro, has much better unit-step-response performance...
Exponential integrator (EI) method has been proved to be an effective technique accelerate large-scale transient power/ground network analysis. However, EI requires the inputs piece-wise linear (PWL) in one step, which greatly limits step size when are poorly aligned. To address this issue, work we first elucidate with mathematical proof that EI, used together rational Krylov subspace, is equivalent performing a moment-matching model order reduction (MOR) single input each time then...
There are complex secondary flow structures in the compressor cascade passage, which seriously suppresses performance of compressor. The highly unstable, especially for loaded cascades. reduced-order model based on modal decomposition method can capture main characteristics field and offer a reference application unsteady control methods. In this study, POD methods used to analyze high-speed cascade. extract mode that reflects energy field. Both design off-design conditions analyzed. obtain...
The reduced-order model based on the modal decomposition method can capture main characteristics of compressor. In this part, dynamic mode (DMD) methods are used to analyze flow in a high-speed compressor cascade. extract information field. Both design and off-design conditions (-2°, 0°, 4°) analyzed. DMD also obtain global energy, time coefficient spatial energy characteristic frequency is highest. with doubling has high at points. obtained by changes uniformly eigenvalues located unit...
In this paper, we investigate a novel model order reduction (MOR) approach with application in power system simulation and control. For the problem of dynamic equivalence controller design, systems can be regarded as linear single input output or square multiple very high dimensions. The main input-output behaviors such assessed by its cross gramian (CG). proposed is based on factored approximations CG, which are achieved alternating directional implicit (ADI) iterations. Both frequency...
Serial crystallography at X-ray free electron laser (XFEL) and synchrotron facilities has experienced tremendous progress in recent times enabling novel scientific investigations into macromolecular structures molecular processes. However, these experiments generate a significant amount of data posing computational challenges reduction real-time feedback. Bragg peak finding algorithm is used to identify useful images also provide feedback about hit-rate resolution. Shot-to-shot intensity...
Model order reduction (MOR) has long been a mainstream strategy to accelerate large scale transient circuit simulation. Exponential integrator (EI) based on Krylov subspace approximation methods, the other hand, are more recently developed for similar goal. This article aims examine in-depth underlying relationship between model and exponential that commonly seen as two separate methods. The main finding is EI can be viewed moment-matching MOR in time-domain. Specifically, EI, under certain...
The exponential integrator (EI) method has proven to be an effective technique for accelerating transient circuit simulation. Owing its higher accuracy order, EI can use larger step sizes speed up the simulation without compromising accuracy. However, leaping with large steps may sometimes omit some fine-grained variations of waveforms, especially power/ground network analysis where over/under-shoots are important. We propose a back-scaling address this issue complete detailed waveform...