Yuanyuan Zhao

ORCID: 0000-0002-0196-7673
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About
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Research Areas
  • Semiconductor materials and devices
  • Silicon Carbide Semiconductor Technologies
  • Machine Fault Diagnosis Techniques
  • Advancements in Semiconductor Devices and Circuit Design
  • Advanced Sensor and Control Systems
  • Photonic Crystal and Fiber Optics
  • Advanced Algorithms and Applications
  • Advanced Fiber Optic Sensors
  • Speech and Audio Processing
  • Heavy metals in environment
  • Fault Detection and Control Systems
  • Remote Sensing and LiDAR Applications
  • Speech Recognition and Synthesis
  • Industrial Technology and Control Systems
  • Engineering Diagnostics and Reliability
  • Gear and Bearing Dynamics Analysis
  • Photonic and Optical Devices
  • Remote Sensing in Agriculture
  • Islanding Detection in Power Systems
  • Human Mobility and Location-Based Analysis
  • HVDC Systems and Fault Protection
  • GABA and Rice Research
  • Electromagnetic wave absorption materials
  • Data-Driven Disease Surveillance
  • Face and Expression Recognition

China Agricultural University
2023-2025

Institute of Automation
2024

Chinese Academy of Sciences
2024

Lanzhou Jiaotong University
2024

Northwest University
2024

People's Liberation Army 401 Hospital
2024

Chinese People's Liberation Army
2024

Tongji Hospital
2024

Ministry of Education of the People's Republic of China
2024

Chinese Academy of Medical Sciences & Peking Union Medical College
2024

In the event of mechanical equipment failure, fault may not belong to any known category, and existing deep learning methods often misclassify such faults into a class, leading erroneous diagnosis. order address challenge identifying new types in diagnosis, this paper proposes novelty detection diagnosis method for bearing based on hybrid autoencoder network. Firstly, network with one input two outputs was constructed. The original data were then fed obtain its low-dimensional representation...

10.3390/electronics12132826 article EN Electronics 2023-06-26

Purposes Domestic and international research has found that patients with advanced cancer prioritize increasing their quality of life above extending lives simple or intensive treatments. The current study investigates the pathways to improve patients’ sense well-being from family, social, individual levels, is say, it mediating roles comprehending social support as well psychological resilience in relationship between family subjective well-being, also provides references for future...

10.3389/fpsyg.2023.1222792 article EN cc-by Frontiers in Psychology 2024-04-04

Abstract For the first time, we proposed a polarization beam splitter (PBS) designed based on chalcogenide dual-core all-solid anti-resonance fiber (AS-ARF) and simulated it numerically using finite element method (FEM). Two large cladding tubes are introduced to divide core into cores A B. Mode coupling energy exchange between two enabled through gap g tubes. By adjusting structural parameters of AS-ARF, beam-splitting ability single-mode characteristics can be obtained. The influence...

10.1088/1402-4896/ada326 article EN Physica Scripta 2025-01-14

Due to the easier availability of transgenic mice and reagents, mouse orthotopic liver transplantation (MOLT) model offers significant advantages in research. However, technical challenges have limited its broader application. The most challenging steps procedure include manual anastomosis suprahepatic vena cava, cuff portal vein, maintaining anhepatic phase within 20 minutes. This study aims provide detailed solutions overcome these bottlenecks introduces a modified magnetic device...

10.1097/lvt.0000000000000612 article EN cc-by-nc-nd Liver Transplantation 2025-03-26

The joint effects of earthworms and crop straw on toxic metal speciation are not clear, very limited information is available regarding the their interaction Cd mobility in contaminated soil or remediation processes involving plants. This study evaluated impacts mobile form changes uptake by Treatments included both planted unplanted-Cd-contaminated with without rice and/or earthworms. results revealed that earthworms, straw, plant interactions change forms soil. order concentration...

10.3390/ijerph15112398 article EN International Journal of Environmental Research and Public Health 2018-10-29

A novel 300-V high-side thin-layer-SOI field pLDMOS adopting implant (FI) technology and multiple plates (MFPs) has been developed. Breakdown mechanisms of back gate (BG) punchthrough avalanche breakdown for highside are investigated by setting up an analytic model, simulating, verifying experimentally. Shallow junction depth p-field achieved the proposed FI attenuates BG effect; premature surface can be avoided using MFPs. High-side with a voltage (BV) 340 V is experimentally realized on...

10.1109/led.2012.2210023 article EN IEEE Electron Device Letters 2012-08-14

With the advent of modern, high-speed electrified rail systems, there has been increasing concern about electromagnetic safety in carriages. The aim this study was to assess passengers on trains by utilizing advanced 3D simulation software. A comprehensive model environment experienced a CR400AF train, specifically under influence catenary radiation, constructed. We analyzed magnetic field strength, electric and current density brains 20 various positions train. findings revealed that among...

10.3390/electronics13040740 article EN Electronics 2024-02-12

Based on 11-μm-thick silicon layer and 1-μm-thick buried oxide layer, a novel high-voltage thick SOI technology has been developed for driving plasma display panels (PDP). HV pLDMOS, nLDMOS, nLIGBT LV CMOS are compatible with deep trench isolation. The length T, Y pLDMOS TD nLDMOS optimized to reduce the device size satisfy off-state breakdown voltage simultaneously. Interdigitated N <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> &P P...

10.1109/ispsd.2011.5890820 article EN 2011-05-01

Soil quality is vital in agriculture. People often use sensor networks to obtain the soil data of a piece land. Sometimes, people detect by using one-dimensional (1-D) ultrawideband (UWB) signals, which too energy consuming. Hence, we want an energy-saving model for this condition. Compressed sensing (CS) feasible save energy. As soon as CS was put forward, it attracted wide attention. However, how design suitable sparse dictionary still problem until now. Aiming at different situations,...

10.1109/tetci.2019.2902426 article EN IEEE Transactions on Emerging Topics in Computational Intelligence 2020-01-24

Facial expression recognition (FER) in uncontrolled environment is challenging due to various un-constrained conditions. Although existing deep learning-based FER approaches have been quite promising recognizing frontal faces, they still struggle accurately identify the facial expressions on faces that are partly occluded unconstrained scenarios. To mitigate this issue, we propose a transformer-based method (TFE) capable of adaptatively focusing most important and unoccluded regions. TFE...

10.3389/fnbot.2021.763100 article EN cc-by Frontiers in Neurorobotics 2021-10-25

Aiming at the problem of current equipment fault diagnosis models based on deep learning being unable to automatically identify new class faults according updated data, in this paper we propose an incremental single-class method online sequential extreme machine (OS-ELM). In addition detecting types faults, can perform class-incremental new-class treating as known for ongoing detection and tasks. This approach first constructs a feature extraction network with dual-encoder structure extract...

10.3390/electronics12194099 article EN Electronics 2023-09-29

A 300 V thin layer SOI nLDMOS based on reduced surface electric field (RESURF) and multiple plates (MFP) is proposed in this paper. RESURF principle MFP technology are adopted to modulate the distribution improve breakdown voltage (BV). Device structure parameters discussed achieve a trade-off between on-resistance. Compared with conventional structures, achieved not only owns high BV, but also possesses simple manufacturing process low cost.

10.1109/icsict.2012.6466722 article EN 2012-10-01

A high-side thin-layer silicon-on-insulator (SOI) pLDMOS is proposed, adopting field implant (FI) and multiple plate (MFP) technologies. The breakdown mechanisms of back gate (BG) turn-on, surface channel punch-through, vertical lateral avalanche are investigated by setting up analytical models, simulating related parameters verifying experimentally. device structure optimized based on the above research. shallow junction achieved through FI technology attenuates BG effect, length eliminates...

10.1088/1674-1056/21/1/018501 article EN Chinese Physics B 2012-01-01

A novel trench field stop (TFS) IGBT with a super junction (SJ) floating layer (SJ TFS-IGBT) is proposed. This presents high blocking voltage (> 1200 V), low on-state drop and fast turn-off capability. SJ doping concentration introduces new electric peak at the anode side optimizes carrier distribution, which will improve breakdown in off-state decrease energy loss on-state/switching state for TFS-IGBT. (VF) (BV) can be achieved by increasing thickness of under condition exact charge...

10.1088/1674-4926/31/11/114008 article EN Journal of Semiconductors 2010-11-01

A novel deep trench SOI LIGBT with enhanced safe operating area has been proposed. Deep gate electrode, reaching buried oxide layer, directly introduced for achieving low on-resistance. Heavily doped p <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> region at the emitter side, which sandwiches between n-drift and n region, is provided as holes bypassing path ensuring forward biased area. Some of will flow from to without flowing through...

10.1109/icccas.2009.5250428 article EN International Conference on Communications, Circuits and Systems 2009-07-01

In short video and live broadcasts, speech, singing voice, background music often overlap obscure each other. This complexity creates difficulties in structuring recognizing the audio content, which may impair subsequent ASR understanding applications. paper proposes a multi-task source separation (MTASS) based model called JRSV, Jointly Recognizes Speech Voices. Specifically, MTASS module separates mixed into distinct speech voice tracks while removing music. The CTC/attention hybrid...

10.48550/arxiv.2404.11275 preprint EN arXiv (Cornell University) 2024-04-17
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