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International Symposium on Applied science 2024, ISAS 2024

作者： Raza, Aquib Ching, Congo Tak Shing Liu, Peng-Ta Phan, Thien-Luan Tran, Ngoc-Luan Nguyen, Ha Anh T. Rameez, Mohammad Li, Hung-Chung Linh, Dao Nguyen Phuong Van Hieu, Nguyen Tran, Trung Nghia National Taiwan University Taipei City10673 Taiwan Research Center for Information Technology Academia Sinica Taipei City11529 Taiwan Graduate Institute of Biomedical Engineering National Chung Hsing University Taichung402 Taiwan Department of Electrical Engineering National Chi Nan University Nantou County Taiwan Advanced Plant and Food Crop Biotechnology Center National Chung Hsing University Taichung402 Taiwan International Doctoral Program in Agriculture National Chung Hsing University Taichung402 Taiwan Fall Prevention Center Department of Physical Medicine & Rehabilitation Changhua Christian Hospital Changhua500 Taiwan Department of Physics and Electronic Engineering University of Science Vietnam National University - Ho Chi Minh City Ho Chi Minh City70000 Viet Nam Department of Computer Science University of York York HeslingtonYO10 5DD United Kingdom Undergraduate Program of Intellectual Creativity Engineering National Chung Hsing University Taichung402 Taiwan Ho Chi Minh City72409 Viet Nam HCMUT Vietnam National University Ho Chi Minh City Thu Duc Ho Chi Minh City71308 Viet Nam

This research introduces a deep learning framework that combines convolutional neural networks with autoencoders to improve the diagnostic accuracy of knee osteoarthritis. The study utilized a publicly available dataset from the Mendeley Data repository, where knee joint images were preprocessed using Contrast Limited Adaptive Histogram Equalization to enhance contrast and ensure consistent image sizing. Initially, an autoencoder was employed in an unsupervised manner to learn compressed representations of the data. These representations were then used to train a CNN to classify knee images into 'healthy' and 'osteoarthritic' categories. The model was trained using an 80:20 split for training and testing data, incorporating early stopping and data augmentation techniques to prevent overfitting and enhance generalization. Performance metrics such as accuracy, precision, recall, and the area under the Receiver Operating Characteristic curve (ROCAUC) were used to evaluate the model, resulting in a high test accuracy of 98.95%. The high precision and recall rates further confirmed the model's robustness in diagnosing KOA. To enhance interpretability, Gradient-weighted Class Activation Mapping (Grad-CAM) was applied to identify critical regions in the images that influenced the model's decisions. Additionally, t-Distributed Stochastic Neighbor Embedding (t-SNE) was used to visualize the high-dimensional encoded features in a two-dimensional space, providing deeper insights into how the model differentiates between classes. The promising results of this deep learning approach suggest its potential for broader applications in medical imaging diagnostics. By providing healthcare professionals with a tool that enhances diagnostic accuracy and operational efficiency, this framework lays the foundation for developing scalable, AI-driven diagnostic systems for various complex medical conditions. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Joints (anatomy)

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RSAC: Regularized subspace approximation classifier for lightweight continuous learning

arXiv

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arXiv 2020年

作者： Ho, Chih-Hsing Tsai, Shang-Ho Department of Electrical Engineering and Computer Science Honor Program National Chiao Tung University Hsinchu Taiwan Department of Electrical Engineering National Chiao Tung University Hsinchu Taiwan

Continuous learning seeks to perform the learning on the data that arrives from time to time. While prior works have demonstrated several possible solutions, these approaches require excessive training time as well as memory usage. This is impractical for applications where time and storage are constrained, such as edge computing. In this work, a novel training algorithm, regularized subspace approximation classifier (RSAC), is proposed to achieve lightweight continuous learning. RSAC contains a feature reduction module and classifier module with regularization. Extensive experiments show that RSAC is more efficient than prior continuous learning works and outperforms these works on various experimental settings. Copyright © 2020, The Authors. All rights reserved.

关键词： Approximation algorithms

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TAROGE-M: Antarctic High-Mountain Radio Antenna Array for Detecting Ultra-High Energy ANITA Anomalous Events 38

TAROGE-M: Antarctic High-Mountain Radio Antenna Array for De...

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38th International Cosmic Ray Conference, ICRC 2023

作者： Wang, Shih-Hao Chen, Pisin Chen, Yaocheng Chen, Ying-Chih Choi, Taejin Ham, Young-Bae Hsu, Shih-Ying Huang, Jian-Jung Huang, MingHuey A. Jee, Geonhwa Jung, Jongil Kim, Jieun Kuo, Chung-Yun Kwon, Hyuck-Jin Lee, Changsup Leung, Chung-Hei Liu, Tsung-Che Nam, Jiwoo Shiao, Yu-Shao J. Shin, Bok-Kyun Su, Shih-Chieh Wang, Min-Zu Wang, Shih-Hao Wang, Yu-Hsin Anker, Astrid Barwick, Steven W. Besson, Dave Z. Bouma, Sjoerd Cataldo, Maddalena Gaswint, Geoffrey Glaser, Christian Hallmann, Steffen Hanson, Jordan C. Henrichs, Jakob Kleinfelder, Stuart A. Lahmann, Robert Meyers, Zachary S. Nelles, Anna Novikov, Alexander Paul, Manuel P. Pyras, Lilly Persichilli, Christopher Plaisier, Ilse Rice-Smith, Ryan Seikh, Mohammad F. H. Tatar, Joulien Welling, Christoph Zhao, Leshan Department of Physics National Taiwan University Taipei10617 Taiwan Leung Center for Cosmology and Particle Astrophysics National Taiwan University Taipei10617 Taiwan Kavli Institute for Particle Astrophysics and Cosmology SLAC National Accelerator Laboratory Stanford University StanfordCA94305 United States Division of Atmospheric Sciences Korea Polar Research Institute Incheon Korea Republic of Department of Polar Science Korea University of Science and Technology Daejeon Korea Republic of Department of Energy Engineering National United University Miaoli Taiwan Department of Astronomy Space Science and Geology Chungnam National University Daejeon34134 Korea Republic of Department of Physics and Astronomy University of Delaware NewarkDE19716 United States Department of Electrophysics National Yang Ming Chiao Tung University Hsinchu300 Taiwan Department of applied physics National Pingtung university Pingtung900 Taiwan Chung Cheng Institute of Technology National Defense University Taoyuan335 Taiwan Undergraduate Degree Program of Systems Engineering and Technology National Yang Ming Chiao Tung University Hsinchu300 Taiwan National Nano Device Laboratories Hsinchu300 Taiwan Ulsan National Institute of Science and Technology Ulsan44919 Korea Republic of Institute of Astronomy and Astrophysics Academia Sinica Astronomy-Mathematics Building No. 1 Sec. 4 Roosevelt Rd. Taipei10617 Taiwan Department of Physics and Astronomy University of California IrvineCA92697 United States Department of Physics and Astronomy University of Kansas LawrenceKS66045 United States DESY Zeuthen15738 Germany ECAP Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen91058 Germany Uppsala University Department of Physics and Astronomy UppsalaSE-752 37 Sweden Whittier College Department of Physics WhittierCA90602 United States Department of Electrical Engineering and Computer Science University of California IrvineCA92697 United States Resea

TAROGE-M is a radio antenna array atop ∼ 2.7 km-high Mt. Melbourne in Antarctica for detecting ultra-high energy (UHE, E > 1017 eV) air showers in near-horizontal directions. Besides the detection of cosmic rays and Earth-skimming tau neutrinos, its primary goal is to reproduce the discovery and verify the origin of so-called ANITA anomalous events, having feature of upward-going UHE air showers but cannot be explained by tau neutrinos. The detection concept takes advantages of a high altitude for a broad view toward the horizon;strong and near-vertical geomagnetic field for enhancing the radio signal;and quiet radio environment in Antarctica. Its relatively simple design and high duty cycle make it easily to be extended and thus to achieve an exposure competitive with ANITA experiments within a few years. The first TAROGE-M station operating at 180-450 MHz frequencies deployed in 2020 detected seven UHE cosmic ray events within 25.3-day livetime. The events have a mean energy of ∼ 1 EeV and an estimated flux consistent with other experiments, and validate the station as an UHE particle detector. In 2022-2023 season, the system was upgraded for a robust long-term operation, with a more detailed calibration with a drone-borne pulser. We also discuss the planned upgrade, including the implementation of interferometric trigger, which is expected to increase the cosmic ray and tau neutrino acceptances by a factor of 10 at 0.1 EeV, corresponding to a lower energy threshold by a factor of 3. © Copyright owned by the author(s) under the terms of the Creative Commons.

关键词： Cosmic rays

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A low-cost broadband photodetector based on CsPbBr3quantum dots/transfer-free eco-friendly graphene heterostructures for fast photoresponse

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Nanotechnology 2025年第23期36卷 2025 May 14页

作者： Yi-Chia Cheng Chih-Yu Lin Chia-Hsuan Tseng Meng-Lin Tsai Sheng-Kuei Chiu Ji-Lin Shen S-L Chen Chiashain Chuang Dung-Sheng Tsai Undergraduate Program in the College of Electrical Engineering of Computer Chung Yuan Christian University 200 Zhongbei Rd. Zhongli Dist. Taoyuan City 320314 TAIWAN. Department of Electrical Engineering Chung Yuan Christian University 200 Zhongbei Rd. Zhongli Dist. Taoyuan City 320314 TAIWAN. Department of Materials Science and Engineering National Taiwan University of Science and Technology No. 43 Sec. 4 Keelung Rd. Da'an Dist. Taipei City Taipei City 106335 TAIWAN. Department of Materials Science and Engineering National University of Tainan 33 Sec. 2 Shu-Lin St. Tainan 700301 Taiwan Tainan 700301 TAIWAN. Department of Physics Chung Yuan Christian University Physics Department Chung Yuan Christian University 200 Chung Pei Road Chung Li Taoyuan City 32023 TAIWAN. Department of Electronic Engineering Chung Yuan Christian University 200 Zhongbei Rd. Zhongli Dist. Taoyuan City 320314 TAIWAN. Department of Electronic Engineering Chung Yuan Christian University 200 Zhongbei Rd. Taoyuan City 32023 TAIWAN.

We have successfully demonstrated CsPbBrperovskite quantum dots (QDs)/transfer-free eco-friendly (TFEF) graphene heterostructures with broadband and fast photoresponse. At first, the TFEF graphene is grown directly on the SiO/Si substrates in an atmospheric pressure chemical vapor deposition (APCVD) system with the copper-foil wrapping methods and camphor precursors. Raman mapping image (15 × 15 μm) showed TFEF graphene with high coverage across the surface (~65% single-layer graphene, ~15% bilayer graphene, and ~20% multilayer graphene). After that, CsPbBrQDs were synthesized and then spin-coated on the TFEF graphene surface to form heterostructures. Compared to pure CsPbBrQD-based photodetectors (PDs), CsPbBrQDs/TFEF graphene-based PDs show a higher photo-to-dark current ratio (PDCR) of ~ 7.2 at 2V white light illumination (112 mW/cm). Furthermore, the CsPbBrQDs/TFEF graphene-based PDs show a broadband photoresponse range from UV to near-infrared (NIR) with a peak responsivity reaching up to 32 mA/W, a high detectivity (2.2 × 10cm·Hz/W) and fast operation speed (rise/fall time: ~7/~14 ms). This study opens avenues to develop low-cost and rapid fabrication processes of perovskite/2D nanomaterial-based PDs for fast optical communication, image capture, and flame detection applications.

关键词： APCVD CsPbBr< sub> 3< /sub> camphor perovskite quantum dot photodetector transfer-free graphene

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An innovative interface design with smart phone for interactive computer game applications

An innovative interface design with smart phone for interact...

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2011 IEEE International Games Innovation Conference, IGIC 2011

作者： Huang, Wei-Chin Lu, Tennyson Fang, Wai-Chi Electrical Engineering and Computer Science Undergraduate Honors Program National Chiao Tung University Hsinchu 300 Taiwan

ISBN: (纸本)9781457702587

In the latest electrical consuming generation, computers are still mainly tools for paperwork and game platforms, and tablet PC field and smart phone field are two new fields with powerfully market potential. With a high degree of integration and user friendly interfaces, smart phones have become very popular among the general public. Using various sensors, touch pad, and screen of a smart phone, and designing a friendly control interface with software on it, we can achieve the goal that the computer users can interact with a computer via a smart phone. Therefore, this paper discusses the experiment of using a smart phone as a game controller. Through this attempt, we can get some idea and experience from the experiment to simplify the design of smart phones and improve it to develop a controller mainly used with computers or a new game controller. © 2011 IEEE.

关键词： Speech recognition

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An innovative interface design with smart phone for interactive computer game applications

An innovative interface design with smart phone for interact...

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International IEEE Consumer Electronics Society's Games Innovations Conference, ICE-GIC

作者： Wei-Chin Huang Tennyson Lu Wai-Chi Fang Electrical Engineering and Computer Science Undergraduate Honors Program National Chiao Tung University Hsinchu Taiwan

ISBN: (纸本)9781457702587

关键词： Games Smart phones computers Keyboards Mice IEEE 802.11 Standards Microphones

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An on-line pulse trains analysis system of the wire-EDM process

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Journal of Materials Processing Technology 2009年第9期209卷 4417-4422页

作者： Liao, Y.S. Cheng, M.P. Liao, K.W. Department of Mechanical Engineering National Taiwan University Taiwan Electrical Engineering and Computer Science Undergraduate Honors Program National Chiao Tung University Taiwan

Ignition delay time (Td) has been widely used to distinguish the abnormal discharges from the normal ones in wire electrical discharge machining (WEDM) process. In this paper an on-line analysis system for the causality of the Td data sequences was developed to evaluate the machining performance of WEDM process. The system is composed of a stand-alone Td processing circuitry and a user-friendly computer program for data analysis. The Td processing circuitry calculates and records the Td of every single electrical discharge in the first place, and then transmits the Td data via an embedded communication port to a desktop or notebook computer. The computer program, after performing the analysis tasks, will display the result in a graphic way. Two mathematical algorithms were employed for the analysis: autocorrelation function and Fourier transform. Through experiments under different working conditions, it was found that the autocorrelation function could be used to detect if arc or short circuit discharges take place consecutively, and to distinguish the WEDM process with similar Td distributions. On the other hand, the spectral analysis revealed that several factors were identified to be able to induce certain periodic patterns of Td data. These factors include the length of wire electrode, the water pressure, etc. © 2008 Elsevier B.V. All rights reserved.

关键词： Spectrum analysis

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electrical Transport in Transparent Conducting Tin‐doped Indium Oxide Films

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AIP Conference Proceedings 2006年第1期850卷 1548-1549页

作者： S. S. Yeh J. Y. Lu M. W. Shiu J. J. Lin Institute of Physics National Chiao Tung University Hsinchu 30010 Taiwan Electrical Engineering and Computer Science Undergraduate Honor Program National Chiao Tung University Hsinchu 30010 Taiwan Department of Electrophysics National Chiao Tung University Hsinchu 30010 Taiwan

We have studied the temperature behavior of the electrical resistivities ρ(T) in a series of tin‐doped indium‐oxide films with different residual resistivities ρ0 varying from 218 to 568 μΩ cm. We found that the temperature dependence of ρ can be well described by the Bloch‐Grüneisen law from 300 K down to about 100 K. In particular, we observed that the strength of the electron‐phonon coupling, βBG (which characterizes a prefactor in the Bloch‐Grüneisen formula) increases linearly with increasing ρ0. This result is not understood in terms of current theoretical concept for electron‐phonon interaction in metals.

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Modeling of spatially periodic dielectric sensors in the presence of a top ground plane bounding the test dielectric

Modeling of spatially periodic dielectric sensors in the pre...

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作者： Sheiretov, Y. Zahn, M. JENTEK Sensors Inc. 110-1 Clematis Ave. Waltham MA 02451-7013 United States Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 United States Eta Kappa Nu Honor Society Department of Electrical Engineering MIT MIT Course VI-A Electrical Engineering Computer Science Internship Program Liquid Dielectrics Committee International Advisory Committee International Conference on Dielectric Liquids

Semi-analytical models are used to simulate the response of periodic-field electro quasistatic dielectrometry sensors. Due to the periodic structure of the sensors it is possible to use Fourier series methods in combination with collocation point numerical techniques to generate accurate sensor simulations much more efficiently than with the more general finite-element methods. Previously, collocation-point models used to compute the response of periodic field dielectric sensors, also known as Interdigitated Electrode Dielectrometers (IDED), have ignored the contribution of the constant (zero-order) term in the Fourier series expansion of the physical quantities. This is justifiable if the top dielectric material layer under test is infinitely thick, with any top ground plane bounding the dielectric removed too far from the sensor to influence its response. This is the assumption generally made until now in the application of these models. In practice, however, it is impossible to eliminate the cumulative effect of objects at ground potential in the vicinity of the sensor, which in general manifests itself as a ground plane electrode positioned at some effective distance within the top dielectric layer (usually air). In order to eliminate this source of uncertainty in the measurements, we suggest that a grounded electrode be explicitly placed at the top of the dielectric layer in the experimental setup, and its presence be accounted for in the models. Furthermore, in many cases, such as measurements on ceramic thermal barrier coatings, a metal layer is already present behind the material under test. In this paper we present how the models must be modified to account for this ground plane, and what effect it has on the dependence of the sensor response on the material properties. For example, the sensor transcapacitance may no longer be a monotonically increasing function of the material's permittivity, leading to nonuniqueness in permittivity measurements, as some f

关键词： Dielectric devices

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