Showing 961 - 980 results of 3,553 for search 'different threshold (method OR methods)', query time: 0.18s Refine Results
  1. 961

    Photon-counting CT for bullet material differentiation: applications in forensic radiology by Benedikt M. Schaarschmidt, Jan Hegmanns, Jörg Wulff, Viktor Haase, Sebastian Faby, Felix Baum, Christian Bäumer, Sebastian Zensen, Johannes Haubold, Benno Hartung

    Published 2025-05-01
    “…Conclusion In this PCCT phantom study, significant differences were observed between lead and brass bullets in the different energy threshold images. …”
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  2. 962

    Study on consistency between liver fat fraction quantification based on photon-counting CT and MRI proton density fat fraction by CAI Xinxin, DENG Rong, XU Xinxin, XU Zhihan, CHANG Rui, DONG Haipeng, LIN Huimin, YAN Fuhua

    Published 2025-04-01
    “…Objective To investigate the consistency between CT-derived fat fraction (CT-FF) based on photon-counting CT material decomposition under different scanning conditions and magnetic resonance imaging proton density fat fraction (MRI-PDFF), thereby developing a CT-based method for liver fat quantification suitable for the Chinese population. …”
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  3. 963

    Vision based two-dimensional measurement of machine tool motion trajectory by Haochen HUANG, Daisuke KONO, Masahiro TOYOURA

    Published 2024-11-01
    “…The measurement resolution and accuracy of the proposed method are investigated experimentally. In addition to the model fitting method, the edge detection and threshold detection methods with different functions for model fitting method are also used for marker position detection for comparison. …”
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  4. 964

    Research on Beampattern Synthesis of Conformal Array Based on Space-Variability Suppression by Sijia Liu, Minghai Pan

    Published 2024-11-01
    “…In order to obtain a stable beampattern, the convex optimization method is used to solve the weighted value of the amplitude and phase of the elements under the condition of satisfying the set beam gain threshold so that the optimized main lobes of the beams with different directions approach the main lobe of the reference beam. …”
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  5. 965

    PROCESSING OF DETAIL WAVELET-COEFFICIENTS TO IMPROVE THE ACCURACY OF REFLECTOMETRY MEASUREMENTS by I. V. Manonina

    Published 2016-12-01
    “…The noise term of the reflectogram is most clearly revealed in the detail coefficients obtained at the lowest decomposition level (j = 1, 2, 3), and which needs to be applied to the threshold processing with different threshold for each coefficient thus the removal of sufficiently small coefficients, which are considered to be noise, is carried out. …”
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  6. 966

    A Tumor Volume Segmentation Algorithm Based on Radiomics Features in FDG-PET in Lung Cancer Patients, Validated Using Surgical Specimens by Lena Bundschuh, Jens Buermann, Marieta Toma, Joachim Schmidt, Glen Kristiansen, Markus Essler, Ralph Alexander Bundschuh, Vesna Prokic

    Published 2024-11-01
    “…Tumors were segmented in positron emission tomography (PET) data using previously reported algorithms based on three different radiomics features, as well as a threshold-based algorithm. …”
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  7. 967

    Applying Classical and Intelligence Techniques for Digital Image Contrast Enhancement by Alyaa taqi

    Published 2008-12-01
    “…By studying the classical and fuzzy logic methods, we proposed a method named (Fuzzy Hyperbolic Threshold), the proposed method gave very good results. …”
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  8. 968

    Effects of polishing protocols on the surface roughness and color stability of polyetheretherketone (PEEK) by Sezgi Cinel Şahin, Hatice Lamia Elif Sağesen

    Published 2024-01-01
    “…Materials and methods: A total of 96 disc-shaped specimens were fabricated from PEEK material and divided into 6 different groups: control (CN), ‘‘Abraso-Starglanz’’ polishing paste (A), ‘‘Yildiz’’ polishing paste (Y), ‘‘Enhance’’ polishing system (EN), ‘‘Super snap’’ polishing kit (SS), and silicone polisher (SP). …”
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  9. 969

    Nonlinear Effects of Changes in Government Expenditures Across Global Economies: Insights from a QNARDL Analysis by Rianmahardhika Sahid Budiharseno, Min-Joon Kim

    Published 2025-06-01
    “…Unlike traditional models, this study decomposes government expenditure into positive and negative changes, estimating their impacts across different growth quantiles. The QNARDL model provides more detailed information than linear models such as the threshold autoregressive model, panel threshold method, quadratic form, and data envelopment analysis. …”
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    Article
  10. 970

    Fitness & Sports Medicine by Seitz H, Preissler E, Catalá-Lehnen P, Weitl M

    Published 2020-02-01
    “…The remaining ventilatory, hematological and performance-related variables show only partially significant changes and cannot demonstrate differences between hypoxic and normoxic training.Discussion: The consideration of the variables revealed similarities in the oxygen uptake at the second ventilatory threshold, but a clear detection of differences between hypoxic continuous live low-train high and normoxic training was not possible. …”
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  11. 971

    Experimental Investigation on Cyclic Huff-n-Puff with Surfactants Based on Complex Fracture Networks in Water-Wet Oil Reservoirs with Extralow Permeability by Bao Cao, Pu Wei, Fuchun Tian, Yang Yan, Kun Xie, Weijia Cao, Xuewei Liu, Xiangguo Lu, Yu Li, Hongru Li

    Published 2021-01-01
    “…Then, the experiments of huff-n-puff with surfactants at different threshold injection pressures and soaking time were carried out to determine the oil increasing effects and analyze the pore-scale (micropores, mesopores, and macropores) mechanisms by combining the technology of nuclear magnetic resonance (NMR), which showed that the recovery increased with threshold injection pressure mostly in mesopores and macropores, while that increased with soaking time mostly in micropores. …”
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  12. 972

    Similarities in the Low-Energy Elastic and Ps Formation Differential Cross-Sections for e<sup>+</sup>-H and e<sup>+</sup>-He Scattering by Peter Van Reeth, John W. Humberston

    Published 2025-05-01
    “…In the present work, the elastic scattering differential cross-sections (EDCSs) for e<sup>+</sup>-H and e<sup>+</sup>-He below the first excitation threshold of the target were evaluated using the Kohn variational method and found to be very similar. …”
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  13. 973

    Shoreline Change Sensitivity in The Kocasu Stream Delta and The Future (2033 and 2043) Shore Change Predictions by Sultan Murat Uzun

    Published 2024-12-01
    “…In this study, water index analyses and coastline extraction with the threshold method were performed on Landsat satellite images of 1980, 1985, 1990, 1995, 2000, 2005, 2010, 2015, 2020, and 2023. …”
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  14. 974

    Treatment of sudden sensorineural hearing loss with hyperbaric oxygenation - our experience by Živaljević Zvonko, Živić Ljubica, Mihailović Nataša, Živković Miodrag, Vorkapić Branko, Baletić Nenad

    Published 2017-01-01
    “…It is of unclear etiology and pathogenesis, which leads to the use of different therapeutic methods. Treatment protocols are not compliant, making it difficult to objectively quantify their impact. …”
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  15. 975

    Influence of Spatial Scale Effect on UAV Remote Sensing Accuracy in Identifying Chinese Cabbage (<i>Brassica rapa</i> subsp. <i>Pekinensis</i>) Plants by Xiandan Du, Zhongfa Zhou, Denghong Huang

    Published 2024-10-01
    “…Based on the four commonly used vegetation indices for crop recognition, the Excess Green Index (ExG), Red Green Ratio Index (RGRI), Green Leaf Index (GLI), and Excess Green Minus Excess Red Index (ExG-ExR), the optimal index was selected for extraction. Image processing methods such as frequency domain filtering, threshold segmentation, and morphological filtering were used to reduce the impact of weed and mulch noise on recognition accuracy. …”
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  16. 976

    Evaluation of Baby Leaf Products Using Hyperspectral Imaging Techniques by Antonietta Eliana Barrasso, Claudio Perone, Roberto Romaniello

    Published 2025-07-01
    “…The aim of the research was to identify a discrimination method to analyze the different hydration levels in baby-leaf products. …”
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  17. 977

    PROPHYLAXIS OF THE PAIN OF THE SYNDROME WHEN USING REMOVABLE DENTURES by M.Ya. Nidzelsky, N.V. Tsvetkova, V.M. Sokolovskaya

    Published 2018-03-01
    “…The task is solved by the use of electro-diagnostics of tissues dentition method of R. Voll that determine the pain threshold mucosa alveolar process and palate. …”
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  18. 978

    Antibacterial effect of femtosecond laser against Enterococcus faecalis and Fusobacterium nucleatum biofilms on dentin: an in vitro study by Pei Liu, Runze Liu, Yi Luo, Wei Fan, Bing Fan

    Published 2025-03-01
    “…The antibacterial effect of different fs-laser irradiation dosages within the safe threshold on E. faecalis and F. nucleatum biofilms was firstly evaluated using the growth curve method. …”
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  19. 979

    Bias and standard deviation mean and maximum Doppler frequency estimators by K. MARASEK, A. NOWICKI

    Published 2014-05-01
    “…The mean frequency was computed as the first spectral moment of the spectrum with and without the noise subtraction. Different definitions of f_max were used: frequency at which spectral power decreases down to 0.1 of its maximum value, modified threshold crossing method [23] and novel geometrical method. …”
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  20. 980

    Indoor positioning tracking with magnetic field and improved particle filter by Mei Zhang, Tingting Qing, Jinhui Zhu, Wenbo Shen

    Published 2017-11-01
    “…First, adaptive four-threshold step-detection and mixed adaptive step length methods are used to obtain the travel distance in different walking states. …”
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