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  1. 241

    Characterization of medical device constituents and development of duration-based non-cancer threshold of toxicological concern values by Taylor Builee, Todd A. Kennedy, Valériane Levelut, Megan A. Hahn, Stephen Bond, Michael K. Peterson, Frances K. Hsia, Alessia Stornetta, Kristin J. Erickson, Kimberly D. Ehman, Bindu Prabhakar, Bradford D. Bagley, Sherry P. Parker

    Published 2025-06-01
    “…IntroductionIn the absence of sufficient constituent-specific dose-response toxicity data, threshold of toxicological concern (TTC) values are commonly used in toxicological risk assessment of medical device (MD) constituents. …”
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  2. 242

    A preliminary study on developing statistical distribution table of hearing threshold deviation for otologically normal Chinese adults by Linjie WU, Yang LI, Haiying LIU, Anke ZENG, Jinzhe LI, Wei QIU, Hua ZOU, Meng YE, Meibian ZHANG

    Published 2025-07-01
    “…backgroundCurrent assessment of noise-induced hearing loss relies on the hearing threshold statistical distribution table of ISO 7029-2017 standard (ISO 7029), which is based on foreign population data and lacks a hearing threshold distribution table derived from pure-tone audiometry data of the Chinese population, hindering accurate evaluation of hearing loss in this group.ObjectiveTo establish a statistical distribution table of hearing threshold level (HTL) for otologically normal Chinese adults and to provide a scientific basis for revising the diagnostic criteria of occupational noise-induced deafness in China.MethodsA total of 1271 otologically normal Chinese adults aged 18-60 years were divided into four groups with 10-year age intervals. …”
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  5. 245

    Vibration Analysis and Vehicle Detection by MEMS Acceleration Sensors Embedded in PCC Pavement by Congyi Chang, Linghui Kong, Libin Han, Junmin Li, Shuo Pan, Ya Wei

    Published 2025-05-01
    “…The study also explored various sensor placement locations and different threshold values for acceleration time-domain signals. …”
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  6. 246

    Prioritizing Protection and Restoration Areas Based on Ecological Security Pattern with Different Resistance Assignments by Dingyi Jia, Weiguo Qiu, Rongpeng Guo, Min Wu, Zhanyong Wang, Xisheng Hu

    Published 2025-02-01
    “…The findings show that (1) as the cumulative resistance threshold increases, the area of ecological corridors expands from 171.36 km<sup>2</sup> to 1439.24 km<sup>2</sup>, with the moderate method identified as the optimal resistance assignment approach; (2) significant differences exist in the identification of key corridors under different resistance assignment methods. …”
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  7. 247

    An Improved Multi-Threshold Clutter Filtering Algorithm for W-Band Cloud Radar Based on K-Means Clustering by Zhao Shi, Lingjiang Huang, Fengyuan Wu, Yong Lei, Huiying Wang, Zhiya Tang

    Published 2024-12-01
    “…This study investigates the application of an improved multi-threshold method based on the K-means algorithm for clutter filtering in W-band cloud and fog radar observations. …”
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  8. 248

    Rapid Probabilistic Inundation Mapping Using Local Thresholds and Sentinel-1 SAR Data on Google Earth Engine by Jiayong Liang, Desheng Liu, Lihan Feng, Kangning Huang

    Published 2025-05-01
    “…Moreover, it enables users to refine local thresholds or integrate on-the-ground knowledge, providing enhanced adaptability over traditional methods.…”
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  9. 249

    Optimum Multilevel Thresholding for Medical Brain Images Based on Tsallis Entropy, Incorporating Bayesian Estimation and the Cauchy Distribution by Xianwen Wang, Yingyuan Yang, Minhang Nan, Guanjun Bao, Guoyuan Liang

    Published 2025-02-01
    “…Its principle is to determine the optimal threshold by maximizing or minimizing the image’s entropy, dividing the image into different regions or categories. …”
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  10. 250

    An Efficient Technique for Compressing ECG Signals Using QRS Detection, Estimation, and 2D DWT Coefficients Thresholding by Mohammed Abo-Zahhad, Sabah M. Ahmed, Ahmed Zakaria

    Published 2012-01-01
    “…This paper presents an efficient electrocardiogram (ECG) signals compression technique based on QRS detection, estimation, and 2D DWT coefficients thresholding. Firstly, the original ECG signal is preprocessed by detecting QRS complex, then the difference between the preprocessed ECG signal and the estimated QRS-complex waveform is estimated. 2D approaches utilize the fact that ECG signals generally show redundancy between adjacent beats and between adjacent samples. …”
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  13. 253

    Acoustic Identification of Dolphin Whistle Types in Deep Waters of Arabian Sea Using Wavelet Threshold Denoising Approach by Madan M. Mahanty, Sanjana M. Cheenankandy, Ganesan Latha, Govindan Raguraman, Ramasamy Venkatesan

    Published 2023-03-01
    “…However, the unwanted impulsive shackle noise occurs in broad band with the noise level higher by ∼20 dB over the dolphin signals, and it reduces the quality of dolphin whistles. A wavelet based threshold denoising technique followed by a subtraction method is implemented. …”
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  14. 254

    Exercise testing in clinical context: Reference ranges for interpreting anaerobic threshold as an outcome for congenital heart disease patients by Katherine Hansen, Tracy Curran, Lindsey Reynolds, Catherine Cameron, Jennifer Pymm, Julie Ann O'Neill, Rachel Losi, Cara Sherman, Elise Ackermans, Suellen Yin, Tajinder Singh, Mark E. Alexander, Kimberlee Gauvreau, Naomi Gauthier

    Published 2024-12-01
    “…Background: Change in the oxygen consumption (VO2) at the ventilatory anaerobic threshold (VAT) is an important outcome in research studies of children with congenital heart disease (CHD). …”
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  16. 256

    Analysis of Key Factors Affecting Water Disaster in Deep Mining and Establishment of a Water Disaster Evaluation Method Suitable for Different Mining Depths by Jianghui He, Wenping Li, Wei Qiao, Zhi Yang, Qiqing Wang

    Published 2021-01-01
    “…The results of the statistical analysis show that the accuracy of the new method at different mining depths is higher than that of the T method.…”
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  17. 257

    Advanced Credit Card Fraud Detection: An Ensemble Learning Using Random Under Sampling and Two-Stage Thresholding by Ibrahim Almubark

    Published 2024-01-01
    “…This paper explored the utilization of machine learning models, with a particular emphasis on ensemble methods, to advance the detection of CC fraud. We present an ensemble model that incorporates different classifiers to address the dataset imbalance issue that is present in most CC datasets. …”
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  18. 258

    Objective Estimation of Frequency-Specific Pure-Tone Hearing Thresholds following Bone-Conduction Hearing Aid Stimulation by Torsten Rahne, Thomas Ehelebe

    Published 2014-01-01
    “…The amount of amplification provided by the hearing system is selected based on the individual’s sensorineural frequency-specific threshold. With patients who are not able to provide thresholds behaviorally, such as young children, objective methods are required to estimate the unaided and aided hearing threshold and thus the success of the hearing system fitting. …”
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  19. 259

    Determination of Spatiotemporal Gait Parameters Using a Smartphone’s IMU in the Pocket: Threshold-Based and Deep Learning Approaches by Seunghee Lee, Changeon Park, Eunho Ha, Jiseon Hong, Sung Hoon Kim, Youngho Kim

    Published 2025-07-01
    “…This study proposes a hybrid approach combining threshold-based algorithm and deep learning to detect four major gait events—initial contact (IC), toe-off (TO), opposite initial contact (OIC), and opposite toe-off (OTO)—using only a smartphone’s built-in inertial sensor placed in the user’s pocket. …”
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  20. 260

    Determination of heart rate threshold from heart rate kinetics during maximal graded exercise in soccer players by Silvio Rodrigues Marques Neto, Alexandre Gurgel, Eduardo Lattari, Viviane Faleiro, Sérgio Machado, Paulo Farinatti, Geraldo Maranhão Neto

    Published 2019-12-01
    “…Oxygen uptake (VO2) and heart rate (HR) were monitored, recorded and resampled at 3.5Hz. The ventilatory threshold (VT), and respiratory compensation (RC), heart rate deflection points (HRDP1 and HRDP2) and heart rate kinetics threshold (HRT) were determined by computerized methods. …”
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