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7 Result(s)

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  1. No Access

    Chapter and Conference Paper

    Weakly Supervised Minirhizotron Image Segmentation with MIL-CAM

    We present a multiple instance learning class activation map (MIL-CAM) approach for pixel-level minirhizotron image segmentation given weak image-level labels. Minirhizotrons are used to image plant roots in situ

    Guohao Yu, Alina Zare, Weihuang Xu, Roser Matamala… in Computer Vision – ECCV 2020 Workshops (2020)

  2. No Access

    Article

    Root identification in minirhizotron imagery with multiple instance learning

    In this paper, multiple instance learning (MIL) algorithms to automatically perform root detection and segmentation in minirhizotron imagery using only image-level labels are proposed. Root and soil characteri...

    Guohao Yu, Alina Zare, Hudanyun Sheng, Roser Matamala… in Machine Vision and Applications (2020)

  3. No Access

    Article

    The influence of polarization Coulomb field scattering on the parasitic source resistance of E-mode P-GaN/AlGaN/GaN heterostructure field-effect transistors

    E-mode P-GaN/AlGaN/GaN heterostructure field-effect transistors (HFETs) of various sizes were fabricated, and their parasitic source resistance (RS) was measured. The measurement results showed that RS varied gre...

    Guangyuan Jiang, Yan Liu, Zhaojun Lin, Guohao Yu, Baoshun Zhang… in Applied Physics A (2021)

  4. No Access

    Chapter and Conference Paper

    An Analysis of Hotel Management Business Strategy Research Under the Background of Tourism Boom Under the Correlation Algorithm

    With the continuous improvement of the economy and people’s living standard, people pay more and more attention to the enjoyment of life, and going out for tourism has become an important way of leisure and en...

    Yiqiong Zhang, Guohao Yu in Application of Big Data, Blockchain, and I… (2023)

  5. No Access

    Chapter and Conference Paper

    Influence of Asymmetric Spacer Layers on Resonant Tunneling Diodes

    Resonant Tunneling Diodes (RTD) is one of the most promising candidates for room temperature terahertz oscillators. In order to increase the upper limit of radiation frequency in RTD terahertz oscillators, pea...

    Xubo Li, Weiming Rong, ** Zhang… in Proceedings of the 5th China and Internati… (2024)

  6. No Access

    Article

    Polarization Properties in AlGaN/GaN HEMT-Array with a Shifted Gate

    We describe the plasmon resonances of AlGaN/GaN HEMT-array with a shifted gate at THz frequencies. By altering gate voltage and gate length, we obtained absorption spectra at different gate positions using the...

    Runxian **ng, ** Zhang, Hongyang Guo, Guohao Yu, Jiaan Zhou, An Yang… in Plasmonics (2024)

  7. No Access

    Article

    Polarization Properties in GaN Double-Channel HEMTs at Mid-Infrared Frequencies

    The polarization properties of grating-gate GaN-based high electron mobility transistors in the mid-infrared region have been investigated. However, due to the lack of research on the absorption characteristic...

    Runxian **ng, Hongyang Guo, Guohao Yu, Jiaan Zhou, An Yang, Shige Dai… in Plasmonics (2024)