Showing 241 - 260 results of 3,553 for search 'different threshold methods', query time: 0.15s Refine Results
  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

    Data-driven thermal safety threshold analysis of friction component based on macro-micro interaction model by Jianpeng Wu, Ao Ding, Chengbing Yang, Hanshu Zhang, Liyong Wang, Heyan Li

    Published 2025-10-01
    “…Aiming at the temperature failure for wet friction pair within mechanical transmissions, this paper constructs a thermal-mechanical coupled simulation model to analyse the surface temperature field and proposes two types of characterization parameters for temperature field failure: the critical radial temperature difference (Tr) and the adjacent circumferential temperature difference (Tθ). …”
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  3. 243

    Tracking shoreline change using minimum convolution of Gaussian weight and squared differences by Hojun Yoo, Hyoseob Kim, Tae Soon Kang, Jin Young Park, Jong Beom Kim

    Published 2025-01-01
    “…Existing shoreline-tracking methods include the threshold methods, colour intensity gradient methods, and neural networks, which involve ad-hoc assignment of the threshold values, drawing shore-normal transects, and heavy preliminary training for each coast with many data, respectively. …”
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  4. 244

    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
  6. 246

    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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  7. 247

    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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  8. 248

    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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  9. 249

    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

    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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  14. 254

    Packed red blood cell transfusion threshold in traumatic brain injury: a systematic overview of reported studies by Babita Raghuwanshi, Suresh K. Thanneeru, Harish Kumar, Luis Rafael Moscote-Salazar, Rafael Cincu, Md Yunus, Roshan Chanchlani, Amit Agrawal

    Published 2025-04-01
    “…There was heterogeneity among the studies included, with varied results showing worse outcomes with lower Hb threshold in few studies and no difference or worse complications with transfusion in others. …”
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  15. 255

    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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  16. 256

    Old and new equations for maximal and anaerobic threshold heart rate prediction in coronary heart disease in Chinese population by Leilei Wang, Zihao Huang, Luxia Gao, Xi Chen, Deming Deng, Meiming Lin, Xiuyu Leng

    Published 2024-11-01
    “…This study aims to develop equations for MHR and HRAT, assess the accuracy of historical MHR formulas, and examine their correlation with HR measurements at the anaerobic threshold (AT). Methods Among 2021 to 2023, 170 CHD patients were recruited. …”
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  17. 257

    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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  19. 259

    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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  20. 260

    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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