Yongquan Zhang

ORCID: 0000-0001-9791-9168
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Mercury impact and mitigation studies
  • Analytical chemistry methods development
  • Laser-induced spectroscopy and plasma
  • Sparse and Compressive Sensing Techniques
  • Mathematical Dynamics and Fractals
  • Geometric and Algebraic Topology
  • Traffic Prediction and Management Techniques
  • Analytic and geometric function theory
  • Numerical methods in inverse problems
  • Rock Mechanics and Modeling
  • Control Systems and Identification
  • Transportation Safety and Impact Analysis
  • Grouting, Rheology, and Soil Mechanics
  • Drilling and Well Engineering
  • Blind Source Separation Techniques
  • Machine Learning and ELM
  • Advanced Numerical Analysis Techniques
  • Traffic and Road Safety

Ocean University of China
2019-2022

Qingdao Center of Resource Chemistry and New Materials
2021

China University of Geosciences
2017

China Jiliang University
2011-2013

Center for Information Technology Research in the Interest of Society
2007

University of California, Berkeley
2007

The effects of salinity on underwater laser-induced breakdown spectroscopy (LIBS) were investigated with salinities ranging from 2‰ to 50‰. Both spectroscopic and fast imaging techniques used observe plasma emission. It was shown that as the increased, emission intensities atomic lines while ionic suppressed. signal-to-background ratios spectral decreased a function salinity, but signal-to-noise changed irregularly salinity. Image results demonstrated brighter longer could be produced at...

10.1364/ao.58.003886 article EN Applied Optics 2019-05-08

Laser-induced breakdown spectroscopy (LIBS) has been successfully applied for <italic>in situ</italic> detection in the sea, and water pressure is found to be main influence on LIBS signal compared temperature or salinity.

10.1039/d0ja00451k article EN Journal of Analytical Atomic Spectrometry 2021-01-01

10.1007/s13042-011-0058-4 article EN International Journal of Machine Learning and Cybernetics 2011-11-14

We show that the diameter of image skinning map on deformation space an acylindrical reflection group is bounded by a constant depending only topological complexity components its boundary, answering conjecture Minsky in setting. This result can be interpreted as uniform rigidity theorem for disk patterns. Our method also establishes connection between and certain discrete extremal width Coxeter graph group.

10.48550/arxiv.2408.10344 preprint EN arXiv (Cornell University) 2024-08-19

In this paper, we use iterations of skinning maps on Teichm\"uller spaces to study circle packings. This allows us develop a renormalization theory for packings whose nerves satisfy certain subdivision rules. We characterize when the map has bounded image. Under corresponding condition, prove that operator is uniformly contracting. give complete answers existence and moduli problems such The exponential contraction many consequences. particular, homeomorphisms between any two are...

10.48550/arxiv.2308.13151 preprint EN other-oa arXiv (Cornell University) 2023-01-01

Commercially available forward collision warning systems (FCWS) have been designed for highway use, with traffic moving in regular patterns on roadways modest curvature. The development and the evaluation of an FCWS urban driving are described. An is significantly more complicated because irregular movements subject (equipped) target vehicles, as well presence many static objects close to vehicle's path (parked cars, street furniture, etc.). prototype was tested 1 year two transit buses...

10.3141/2000-13 article EN Transportation Research Record Journal of the Transportation Research Board 2007-01-01
Coming Soon ...