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681
Computed tomography and image processing based multi-scale fracture extraction method for core samples
Published 2025-07-01“…A multiscale information-enhanced fracture segmentation method was also proposed. It combined image segmentation methods such as threshold and top-hat segmentation with edge enhancement to better capture micro-fracture information, applying different strategies for fractures of varying scales. …”
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682
Two-stage denoising method for complex underground tunnel scene three-dimensional point clouds
Published 2025-06-01“…Finally, using a specific case of the main haulage drift and return airway in an underground mine, the processing time for each stage of point cloud denoising, the impact of angle thresholds on denoising results, comparisons between different denoising quantities, point cloud normal calculations, and key parameters for point selection in the optimization process are analyzed in detail. …”
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683
Improved tooth flank region segmentation method of interference image by U-net neural network
Published 2024-12-01“…At the same time, the traditional time-domain segmentation method has the problems such as fitting error and being difficult to determine the appropriate segmentation threshold, which will also affect the segmentation accuracy. …”
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684
Comparison of suansun fermentation methods based on SBSE-GC-MS combined with SVM machine learning
Published 2025-07-01“…IntroductionThis study aimed to analyze the flavor profile and microbial community structure of 54 Suansun samples, fermented using three different methods: direct fermentation, natural water-sealed fermentation, and natural fermentation. …”
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685
Open-Circuit Fault Diagnosis Method of Energy Storage Converter Based on MFCC Feature Set
Published 2022-12-01“…Considering the difficulties in signal feature extraction, data dimension explosion, and instability of threshold determination interval in the non-invasive identification of IGBT open-circuit fault in PCS by the existing methods, this paper proposes an open-circuit fault diagnosis method of energy storage converter based on Mel-scale frequency cepstral coefficients (MFCC) feature set, so as to support the normal operation and maintenance of PCS. …”
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686
Clinical Application of MAGiC Method in Distinguishing Between Pituitary Adenoma and Rathke’s Cleft Cyst
Published 2025-06-01“…The R1 relaxation rate demonstrated superior diagnostic performance, with an area under the curve (AUC) of 0.74 (95% confidence interval [CI]: 0.65–0.82), surpassing the R2 rate (AUC 0.62; 95% CI: 0.52–0.71). The optimal threshold for R1 was determined to be 0.82, which provided a sensitivity of 79.6% and specificity of 74.1% (<i>p</i> < 0.001), whereas the optimal threshold for R2 was 14.89 (<i>p</i> = 0.030). …”
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687
A Shadow Detection Method Combining Topography and Spectra for Remote Sensing Images in Mountainous Environments
Published 2025-04-01“…Finally, a multi-level Otsu threshold method is applied to the JSM to generate the shadow mask. …”
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688
Analysis of Extreme Precipitation Events in Ganjiang River Basin Since the Second Half of the 20th Century
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689
White matter tract differences in persistent post-traumatic headache, migraine, and healthy controls: a diffusion tensor imaging study
Published 2025-07-01“…Group comparisons used general linear models with threshold-free cluster enhancement and 5,000 permutations. …”
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690
Association between the atherogenic index of plasma and incident hypertension across different blood pressure states: a national cohort study
Published 2025-05-01“…Logistic regression models, restricted cubic splines models, and threshold analyses were employed to examine the relationship between AIP and the incidence of hypertension. …”
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691
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692
Development of a Novel Method of Spinal Electrophysiological Assessment via Intrathecal Administration at Analgesic Doses
Published 2025-05-01“…However, there are limitations in spinal electrophysiological techniques in terms of the injection method. Traditional methods such as spinal injections may differ in the distributions and concentrations of drugs compared with intrathecal administration during the behavior test. …”
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693
Comparison of Long-Term Antibody Titers in Calves Treated with Different Conjunctival and Subcutaneous <i>Brucella abortus</i> S19 Vaccines
Published 2025-01-01“…The collected sera were analyzed using the Rose Bengal Plate Test (RBPT), Serum Agglutination Test (SAT), and Complement Fixation Test (CFT), which are the preferred serological methods for Brucellosis eradication plans worldwide. …”
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694
Adjustment terms and coefficients of nonlinear regression-based kurtosis-adjusted equivalent sound level method
Published 2025-07-01“…The linear regression and nonlinear least squares methods obtained six different combinations of coefficients (λ) and adjustment terms [\begin{document}$ \mathrm{lg}(\beta _{N}/{\beta }_{G}) $\end{document}]. …”
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695
Image based quantification method reveals differential patterns of lip desquamation associated with age and sex
Published 2025-04-01“…In this study, we aimed to quantify lip desquamation from facial images in a total of 55 participants and compare the results to those obtained from the tape-stripping method. The central region of the lower lip was extracted from each facial image, and global thresholding was applied using the threshold value T, which is defined as Mean + 2.5 SD. …”
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696
A Method of Modal Parameter Identification for Wind Turbine Blade Based on Binocular Dynamic Photogrammetry
Published 2019-01-01“…Hankel matrixes are reconstructed with different dimensions, so different modal parameters are produced. …”
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697
Solar Irradiance Ramp Classification Using the IBEDI (Irradiance-Based Extreme Day Identification) Method
Published 2025-01-01“…The strength of the proposed method relies on that it allows its generalization to any dataset. …”
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698
Study of aging life for EMU arresters based on aging tests and principal component analysis method
Published 2024-09-01“…Additionally, an aging life model was established using the principal component analysis method for these arresters. The results show that the calculated evaluation value of the failure thresholds for the five performance parameters of the arresters reach 82 after standardized processing, indicating a service capacity of up to 7.5 million kilometers for new on-board arresters. …”
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699
Online Analysis of Nonlinear Vibration Characteristics of Milling Chatter
Published 2018-02-01“…The threshold of permutation entropy is also different. …”
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700
Optimal methods for identification of dominants for submerged aquatic vegetation on a case of the northwestern Tatar Strait
Published 2020-09-01“…Dominant species are identified at infracenotic level for aquatic vegetation in the sublittoral zone of the northwestern Tatar Strait (Japan Sea) on the data collected in 2010–2019. Seven different methods of the identifying are considered based both on visual qualitative and quantitative assessments and on instrumental estimations of abundance for 44 macrophyte species. …”
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