Yufeng Li

ORCID: 0000-0002-4135-074X
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Pulsars and Gravitational Waves Research
  • Astrophysical Phenomena and Observations
  • Cosmology and Gravitation Theories
  • Astrophysics and Cosmic Phenomena
  • Gamma-ray bursts and supernovae
  • Mechanics and Biomechanics Studies
  • Black Holes and Theoretical Physics
  • CO2 Reduction Techniques and Catalysts
  • ZnO doping and properties
  • Astronomical Observations and Instrumentation
  • Drug Transport and Resistance Mechanisms
  • Video Analysis and Summarization
  • GaN-based semiconductor devices and materials
  • Educational Games and Gamification
  • AI in Service Interactions
  • Astro and Planetary Science
  • Semiconductor Quantum Structures and Devices
  • Advanced Image and Video Retrieval Techniques
  • Multimodal Machine Learning Applications
  • Particle Accelerators and Free-Electron Lasers
  • Liver Diseases and Immunity
  • Liver Disease Diagnosis and Treatment
  • Astronomy and Astrophysical Research
  • Intelligent Tutoring Systems and Adaptive Learning
  • Ammonia Synthesis and Nitrogen Reduction

Chinese Academy of Sciences
2019-2025

University of Hong Kong
2025

University of Chinese Academy of Sciences
2019-2025

Beijing National Laboratory for Molecular Sciences
2025

Institute of Chemistry
2025

University of Glasgow
2022-2024

Nanjing University
2020-2024

Wuhan University
2024

Shanghai Institute of Materia Medica
2024

National Astronomical Observatories
2019-2023

Abstract The Einstein Telescope (ET), the European project for a third-generation gravitational-wave detector, has reference configuration based on triangular shape consisting of three nested detectors with 10 km arms, where each detector 'xylophone' made an interferometer tuned toward high frequencies, and low frequencies working at cryogenic temperature. Here, we examine scientific perspectives under possible variations this design. We perform detailed evaluation science case single...

10.1088/1475-7516/2023/07/068 article EN cc-by Journal of Cosmology and Astroparticle Physics 2023-07-01

This work characterises the sky localization and early warning performance of networks third generation gravitational wave detectors, consisting different combinations detectors with either Einstein Telescope or Cosmic Explorer configuration in sites North America, Europe Australia. Using a Fisher matrix method which includes effect earth rotation, we estimate uncertainty for $1.4\text{M}\odot$-$1.4\text{M}\odot$ binary neutron star mergers at distances $40\text{Mpc}$, $200\text{Mpc}$,...

10.1103/physrevd.105.043010 article EN Physical review. D/Physical review. D. 2022-02-15

We proposed a model-independent method to constrain the cosmological parameters using Distance Sum Rule of FLRW metric by combining time delay distances and comoving through multi-messenger approach. The are measured from lensed gravitational wave~(GW) signals together with their corresponding electromagnetic wave~(EM) counterpart, while obtained parametrized fitting approach independent supernova observations. With series simulations based on Einstein Telescope, Large Synoptic Survey...

10.3847/1538-4357/ab037e article EN cc-by The Astrophysical Journal 2019-03-01

We investigated the hole injection mechanism in InGaN/GaN blue light-emitting diodes by growing monolithic dual-wavelength multiple-quantum-wells and measuring electroluminescence spectra at different current densities under room temperature. By analyzing spectral competition from quantum wells vertical locations, depth was quantitatively measured. During epitaxial growth, large size V-shape pits with 200–330 nm diameter were intentionally formed active region controlling growth condition....

10.1063/1.4896362 article EN Journal of Applied Physics 2014-09-22

MAXI J1803-298, a newly-discovered Galactic transient and black hole candidate, was first detected by \emph{MAXI}/GSC on May 1st, 2021. In this paper, we present detailed spectral analysis of J1803-298. Utilizing the X-ray reflection fitting method, perform joint fit to spectra respectively, observed \emph{NuSTAR} \emph{NICER}/XTI same day over energy range between 0.7-79.0 keV, found its spin (and inclination angle i) can be constrained close an extreme value, 0.991 ($i\sim$ $70 ^{\circ}$),...

10.1093/mnras/stac1868 article EN Monthly Notices of the Royal Astronomical Society 2022-08-18

In energy conversion technologies, the electron spin effect in catalysts plays a crucial role overcoming spin‐forbidden reactions, offering novel approach to overcome performance bottlenecks of catalysts. Recently, with breakthroughs magnetic field–enhanced catalysis and theoretical predictions, significant progress has been made design development this concept, several attractive inspiring catalyst strategies reported recently, particularly precise modulation states/spin interactions at...

10.1002/celc.202500023 article EN cc-by ChemElectroChem 2025-03-30

As a transient X-ray binary, MAXI J1659-152 contains black hole candidate as its compact star. was discovered on 2010 September 25 during only known outburst. Previously-published studies of this outburst indicate that may have an extreme retrograde spin, which, if confirmed, would provide important clue to the origin spin. In paper, utilizing updated dynamical binary-system parameters (i.e. mass, orbital inclination and source distance) provided by \cite{Torres2021}, we analyze 65 spectra...

10.3847/1538-4357/ac4163 article EN cc-by The Astrophysical Journal 2022-02-01

Abstract Transit Timing Variation (TTV) of hot Jupiters provides direct observational evidence planet tidal dissipation. Detecting dissipation through TTV needs high precision transit timings and long timing baselines. In this work, we predict discuss the potential scientific contribution SiTian Survey in detecting analyzing exoplanet TTV. We develop a detection pipeline for that aims at time-domain astronomy with 72 1 m optical telescopes. The includes modules light curve deblending,...

10.1088/1674-4527/ac5801 article EN Research in Astronomy and Astrophysics 2022-02-23

Abstract MAXI J1820+070 is a newly discovered black hole X-ray binary, whose dynamical parameters, namely the mass, inclination angle, and source distance, have recently been estimated. Insight-HXMT observed its entire outburst from 2018 March 14. In this work, we attempted to estimate spin parameter * , using continuum-fitting method applying fully relativistic thin disk model soft-state spectra obtained by Insight-HXMT. It well known that strongly dependent on three parameters in method,...

10.3847/1538-4357/ac07a9 article EN The Astrophysical Journal 2021-08-01

Abstract Pre–Big Bang models in string cosmology predict a relic background of gravitational wave radiation the early universe. The spectrum this shows that energy density rises rapidly with frequency, which is an interesting target for high-frequency (i.e., kilohertz) detectors. In paper, we discussed constraining power multiple configurations current and future detector (GWD) networks to stochastic predicted cosmology. jointly determined by overlap reduction function sensitivity curves And...

10.3847/1538-4357/ab4e18 article EN cc-by The Astrophysical Journal 2019-12-06

This work shows the results of an evaluation impact that a detector located in China, with noise budget comparable to proposed high-frequency 20 km arm length, Einstein Telescope (ET) or Cosmic Explorer (CE), could have on network ET-CE terms detection rate, localization, and providing early warning alert for simulated binary neutron star (BNS)s. The indicate three-detector including Chinese identify at least 4.4% more BNS mergers than alone. localization uncertainty be reduced by factor 5...

10.48550/arxiv.2406.18228 preprint EN arXiv (Cornell University) 2024-06-26

This work shows the results of an evaluation impact that a detector located in China, with noise budget comparable to proposed high-frequency 20 km arm length, Einstein Telescope (ET) or Cosmic Explorer (CE), could have on network ET-CE terms detection rate, localization, and providing early warning alert for simulated binary neutron stars (BNSs). The indicate three-detector including Chinese identify at least 4.4% more BNS mergers than alone. localization uncertainty be reduced by factor 5...

10.1103/physrevd.110.043001 article EN Physical review. D/Physical review. D. 2024-08-01

The development of large language models (LLMs) has significantly enhanced the capabilities multimodal LLMs (MLLMs) as general assistants. However, lack user-specific knowledge still restricts their application in human's daily life. In this paper, we introduce Retrieval Augmented Personalization (RAP) framework for MLLMs' personalization. Starting from a MLLM, turn it into personalized assistant three steps. (a) Remember: We design key-value database to store user-related information, e.g.,...

10.48550/arxiv.2410.13360 preprint EN arXiv (Cornell University) 2024-10-17

The development of large language models (LLMs) has significantly enhanced the capabilities multimodal LLMs (MLLMs) as general assistants. However, lack user-specific knowledge still restricts their application in human’s daily life. In this paper, we introduce Retrieval Augmented Personalization (RAP) framework for MLLMs’ personalization. Starting from a MLLM, turn it into personalized assistant three steps. (a) Remember: We design key-value database to store user-related information,...

10.32388/95w7kc preprint EN cc-by 2024-11-28

We study the stochastic gravitational waves from string gas cosmology. With help of Lambert W function, we derive exact energy density spectrum in term tensor-to-scalar. New feathers with are found. First, non-Hagedorn phase can be ruled out by current B-mode polarization cosmic microwave background. Second, Hagedorn a logarithmic is shown to unique measurable frequency range. Third, which most important, find length constrained lower than 7 $\sim$ orders that Planck scale.

10.48550/arxiv.2105.05027 preprint EN other-oa arXiv (Cornell University) 2021-01-01
Coming Soon ...