Ke Fang

ORCID: 0000-0001-5499-1151
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About
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Research Areas
  • Advanced MRI Techniques and Applications
  • Fault Detection and Control Systems
  • MRI in cancer diagnosis
  • Supercapacitor Materials and Fabrication
  • Domain Adaptation and Few-Shot Learning
  • Semiconductor Lasers and Optical Devices
  • Covalent Organic Framework Applications
  • Structural Health Monitoring Techniques
  • Advanced Fiber Optic Sensors
  • Atomic and Subatomic Physics Research
  • Crystallization and Solubility Studies
  • Real-time simulation and control systems
  • Simulation Techniques and Applications
  • nanoparticles nucleation surface interactions
  • Multimodal Machine Learning Applications
  • Advanced Photonic Communication Systems
  • Manufacturing Process and Optimization
  • Machine Learning and ELM
  • Advanced Optical Imaging Technologies
  • Medical Imaging Techniques and Applications
  • Glass properties and applications
  • Photonic and Optical Devices
  • Conducting polymers and applications
  • Advanced Sensor and Energy Harvesting Materials
  • Random lasers and scattering media

Xi'an University of Science and Technology
2024

Harbin Institute of Technology
2018-2023

Zhejiang University
2019-2023

State Key Laboratory of Modern Optical Instruments
2023

Wuhan Textile University
2021-2023

Tianjin University
2012-2022

Nanjing University
2021

Xiamen University
2017-2018

New York University
2011-2014

SUNY Polytechnic Institute
2011

One crucial aspect of partial domain adaptation (PDA) is how to select the relevant source samples in shared classes for knowledge transfer. Previous PDA methods tackle this problem by re-weighting based on their high-level information (deep features). However, since shift between and target domains, only using deep features sample selection defective. We argue that it more reasonable additionally exploit pixel-level problem, as appearance difference outlier significantly large. In paper, we...

10.1109/cvpr42600.2020.01272 article EN 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) 2020-06-01

A simple fabrication method of micro/nano-optical fibers (MNOFs) based on near-field melt electrospinning (NMES) is proposed in this Letter. Single with diameters ranging from 500 nm to 6 μm were directly written by molten poly(methyl methacrylate) (PMMA). The morphology and transmission characteristics single PMMA MNOFs experimentally measured. results showed that have the advantages smooth surfaces, uniform diameters, low loss. As an example one-step for MNOF devices, a planar helical...

10.1364/ol.42.005106 article EN Optics Letters 2017-12-04

Quantitative physiological parameters can be obtained from nonlinear pharmacokinetic models, such as the extended Tofts (eTofts) model, applied to dynamic contrast‐enhanced magnetic resonance imaging (DCE‐MRI). However, computation of models is time consuming. The aim this study was develop a convolutional neural network (CNN) for accelerating fitting eTofts model without sacrificing agreement with conventional nonlinear‐least‐square (NLLS) fitting. This retrospective study, which included...

10.1002/jmri.27495 article EN Journal of Magnetic Resonance Imaging 2020-12-31

Covalent organic framework (COF) materials are characterized by periodic π arrays and orderly open channels, but poor electrical conductivity limits their applications in opt-electric fields. In this paper, 2,4,6-tris(4-formylphenyl)-1,3,5-triazine (TFPT) 2,4,6-tris(4-aminophenyl)-1,3,5-triazine (TAPT) were used to synthesize TPT-COF with a redox unit of triazine Schiff base reaction. order improve the TPT-COF, we prepared Nickel Nanowires (NiNWs) chemical reduction method then TPT-COF/NiNWs...

10.1021/acs.jpcc.4c01332 article EN The Journal of Physical Chemistry C 2024-05-29

We have observed nonphotochemical laser-induced nucleation (NPLIN) in levitated 8 pL microdroplets of supersaturated aqueous potassium chloride irradiated with nanosecond pulses 532 nm light. A much higher supersaturation ratio S 1.20 was required to observe NPLIN a microdroplet, compared the value 1.06 for bulk solutions, attributed 40-million-fold lower rate microdroplet at = as result its smaller volume. This finding has application high spatial and temporal resolution pump–probe studies...

10.1021/cg5004319 article EN Crystal Growth & Design 2014-04-02

The effect of the ambient relative humidity (RH) on crystallization malonic and glutaric acid in aqueous microdroplets was investigated using an electrodynamic balance (EDB). Aqueous droplets containing a solute were injected into chamber maintained at selected RH values, after which cycled to characterize deliquescence behavior. Glutaric crystals that formed >40% deliquesced 85 ± 2% RH, consistent with metastable α polymorph. initially ≤30% however, 90 corresponding stable β These polymorph...

10.1021/cg200824h article EN Crystal Growth & Design 2011-08-31

Hardware-in-the-loop Simulation Systems (HILSS) provide effective platforms for the test of hardware and software. To guarantee correct application HILSS, comprehensive credibility evaluation should be implemented over system development life cycle. The components general structure HILSS are discussed similarity types in classified into time & logical similarity, geometry dynamic characteristic perceptual information similarity. Based on previous formulation, factor space construction...

10.1109/ccdc.2018.8407782 article EN 2018-06-01

We propose an ultra-wide angle panoramic imaging system based on a multiplexed reflective surface, which consists of head unit (PHU) and the relay lens group. The surface is applied in PHU to reflect light from glass air for imaging, obtaining front rear view channels, respectively. With field (FoV) 360∘×(35∘-120∘) f-number four, this has good image quality relative illumination FoV. In addition, it loose tolerance requirements diameter ratio 7.2, reducing difficulty manufacturing assembly....

10.1364/ao.498251 article EN Applied Optics 2023-07-31

Abstract Esterification is a normal method for starch modification while reaction condition not clear. Here, pure corn and vinyl acetate were chosen esterification. Reaction conditions involving esterifying agent content, pH, time temperature explored. Dess‐Martin periodinane (DMP) pretreatment was adopted to accelerate Main results reveal that content of 30 wt% acetate, pH = 9, as 1 h 45°C an optimized esterification DMP oxidization can enhance it. After modification, variations in...

10.1002/app.54791 article EN Journal of Applied Polymer Science 2023-10-18

To reduce the polluted areas caused by migration of radioactive or toxic matter, a clear understanding soil matrix stability, especially lattice, is essential under irradiation conditions like those β-ray irradiation. In reality, clay silicate, with talc being one most simple species similar structure to that exhibiting "2 : 1" stacking and complete crystal. Therefore, in this work, it was irradiated an electron beam air dose up 1000 kGy. Then, variations lattice intrinsic microstructural...

10.1039/d1ra04012j article EN cc-by-nc RSC Advances 2021-01-01

This paper develops an intelligent model validation method based on error correcting output coding support vector machine (ECOC SVM). The similarity analysis between simulation time series from computerized and observed real-world system is formulated as a multi-class classification problem. ECOC framework, built the basis of principles communication theory, decomposes task multiple binary problems. SVM used base classifier set measure methods applied to extract input features. Compared...

10.1145/3177457.3177487 article EN 2018-01-08

The pharmacokinetic (PK) parameters estimated from dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) provide valuable information for clinical research and diagnosis. However, these PK suffer many sources of variability. Thus, the estimation posterior distributions could a way to simultaneously quantify values uncertainties parameters. Our objective is develop an efficient flexible method more closely approximate estimate underlying

10.1109/tbme.2023.3318087 article EN IEEE Transactions on Biomedical Engineering 2023-09-21

We report an overlapping sampling scheme to accelerate computational ghost imaging for moving targets, based on reordering a set of Hadamard modulation matrices by means heuristic algorithm. The new condensed overlapped are then designed shorten and optimize encoding the patterns, which shown be much superior random matrices. In addition, we apply deep learning image target, use signal acquired bucket detector corresponding real train neural network. Detailed comparisons show that our method...

10.1088/1674-1056/abea8c article EN Chinese Physics B 2021-03-01

One crucial aspect of partial domain adaptation (PDA) is how to select the relevant source samples in shared classes for knowledge transfer. Previous PDA methods tackle this problem by re-weighting based on their high-level information (deep features). However, since shift between and target domains, only using deep features sample selection defective. We argue that it more reasonable additionally exploit pixel-level problem, as appearance difference outlier significantly large. In paper, we...

10.48550/arxiv.1905.10756 preprint EN other-oa arXiv (Cornell University) 2019-01-01

The pharmacokinetic (PK) parameters extracted from the DCE-MRI provide valuable information but suffer many sources of variability. Thus, efficient and fast estimation distributions these ambiguous PK caused by variabilities could significantly improve robustness repeatability DCE-MRI. parameters’ provides a way to quantify values simultaneously. In this study, we demonstrated feasibility normalizing flow-based distribution network (FPDEN) for in

10.58530/2023/0985 article EN Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition 2024-08-14

As a common but troublesome branch of stray light, ghost images in catadioptric optical systems greatly limit the performances such optics, including panoramic annular lenses (PAL). A versatile and robust real-time characterization algorithm for PAL is proposed, with new ray behavior quantifying index. It characterizes any kind image unit high reliability, regardless actual existence images. With newly extracted feature properly designed numerical methods specified to locating representative...

10.1364/oe.525648 article EN cc-by Optics Express 2024-05-28

<title>Abstract</title> Covalent organic frameworks (COFs) have attracted much attention in energy storage due to their porous network structure, large specific surface area, high crystallinity, and pseudocapacitive ability brought by redox reactions. However, the traditional synthesis method of COFs involves toxic solvents requires temperatures pressure. Therefore, it is necessary develop simple methods for large-scale practical application COFs. This study investigated electrochemical...

10.21203/rs.3.rs-4487665/v1 preprint EN cc-by Research Square (Research Square) 2024-06-11

Motivation: Water exchange measured by filter-exchange imaging (FEXI) is expected to serve as an important biomarker for several brain diseases. However, its estimation accuracy easily affected noise. Goal(s): To develop approach reconstruction of FEXI parameters from noisy signals. Approach: An end-to-end framework was constructed achieve parameter without corresponding labels. adaptative deformable convolutional network introduced explore structural information. A loss function designed...

10.58530/2024/2779 article EN Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition 2024-11-26
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