Yiyan Zhang

ORCID: 0000-0002-6937-417X
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About
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Research Areas
  • Refrigeration and Air Conditioning Technologies
  • Advanced Thermodynamic Systems and Engines
  • Luminescence and Fluorescent Materials
  • Natural Language Processing Techniques
  • Phase Equilibria and Thermodynamics
  • Luminescence Properties of Advanced Materials
  • Transportation and Mobility Innovations
  • Electric Vehicles and Infrastructure
  • Robotics and Sensor-Based Localization
  • Smart Grid and Power Systems
  • Gas Sensing Nanomaterials and Sensors
  • Advanced MIMO Systems Optimization
  • Infrared Target Detection Methodologies
  • Perovskite Materials and Applications
  • Speech and dialogue systems
  • Advanced Battery Technologies Research
  • Industrial Technology and Control Systems
  • Topic Modeling
  • Advanced Image and Video Retrieval Techniques
  • Advancements in Battery Materials
  • Advanced Text Analysis Techniques
  • Supercapacitor Materials and Fabrication
  • Advanced Battery Materials and Technologies
  • Millimeter-Wave Propagation and Modeling
  • Neural Networks Stability and Synchronization

Harbin Institute of Technology
2023

Shanxi University
2022

Hebei University of Science and Technology
2022

Tianjin Normal University
2015

Anhui Normal University
2013-2014

Xi'an Jiaotong University
2014

Chinese Academy of Sciences
2006

Abstract A new luminescence energy transfer (LET) system has been designed for the detection of thrombin in near‐infrared (NIR) region by utilizing NIR‐to‐NIR upconversion lanthanide nanophosphors (UCNPs) as donor and gold nanorods (Au NRs) acceptor. The use upconverting NaYF 4 :Yb 3+ ,Tm nanoparticles with sharp NIR emission peaks upon excitation an inexpensive infrared continuous wave laser diode provided large spectral overlap between Both Au NRs carboxyl‐terminated UCNPs were first...

10.1002/chem.201304556 article EN Chemistry - A European Journal 2014-02-05

A new luminescence resonant energy transfer (LRET) system has been designed that utilizes near-infrared (NIR)-to-NIR upconversion lanthanide nanophosphors (UCNPs) as the donor, and Au nanorods (Au NRs) acceptor. The UCNPs were excited by a (980 nm) wavelength also emitted at (804 using an inexpensive infrared continuous wave laser diode. NRs showed high absorption band around 806 nm, which provided large spectral overlap between donor Hg(2+) ions added to aqueous solution containing modified...

10.1039/c3an36921h article EN The Analyst 2013-01-01

Target detection in aerial images taken by unmanned vehicles is the most widely used scene at present. Compared with ordinary images, background of more complex, and target size smaller, which results inferior precision a high false rate. This paper proposes new small model TCA-YOLOv5m, based on YOLOv5m combines Transformer algorithm Coordinate Attention (CA) mechanism. In this model, transformer added to end backbone YOLOv5, enables mine features information images. neck layer Path...

10.1109/access.2022.3232293 article EN cc-by IEEE Access 2022-12-26

This paper establishes a mathematic model of CO2 two-phase ejector to investigate flow distribution in the components mixing chamber and diffuser. The suction was modeled using characteristic line method describe development process supersonic expansion wave, chamber, as well diffuser models, were built based on double-flow model. reliability verified by experimental data. distributions parameters along axis analyzed under different ratios ejector. Structure optimizations conducted. results...

10.3390/math10050693 article EN cc-by Mathematics 2022-02-23

In recent years, many approaches have been introduced in next generation (5G) wireless cellular networks response to the demands for higher data rates and broader coverage. this paper, a novel downlink three-dimensional (3D) beamforming scheme is proposed 5G multiuser multiple-input multiple-output (MU-MIMO) system. This separates beams so-called elevation domain via base station (BS) antenna tilt assignment, with objective of reducing inter-user interference. The key controlling vertical...

10.1109/glocom.2014.7417183 article EN 2015 IEEE Global Communications Conference (GLOBECOM) 2014-12-01

Document-level relation extraction aims to discover relations between entities across a whole document. How build the dependency of from different sentences in document remains be great challenge. Current approaches either leverage syntactic trees construct document-level graphs or aggregate inference information sentences. In this paper, we cross-sentence dependencies by inferring compositional inter-sentence mentions. Adopting aggressive linking strategy, intermediate are reasoned on...

10.48550/arxiv.2103.08200 preprint EN other-oa arXiv (Cornell University) 2021-01-01

Uncontrolled charging of Plug-in Electric Vehicles (PEVs) has a negative impact on the peak load and brings potential challenges to electric utility. In this paper, we apply statistical model PEVs demand simulate driving habits PEV users, then develop controlled charging, i.e. dispatch based smart PEVs, in which two strategies are proposed, including valley-searching interruptible strategies. Simulation results for residential area show that, many significant advantages over uncontrolled...

10.1109/mace.2012.39 article EN International Conference on Mechanic Automation and Control Engineering 2012-07-27
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