Mostrando 1,121 - 1,140 Resultados de 3,622 Para Buscar '"fractal"', tiempo de consulta: 0.21s Limitar resultados
  1. 1121
    por Liu, Yi-Hung, Huang, Shiuan, Huang, Yi-De
    Publicado 2017
    “…In this study, we address this critical issue by introducing the Grassberger–Procaccia and Higuchi’s methods to estimate the fractal dimensions (GPFD and HFD, respectively) of the electroencephalography (EEG) signals from ALS patients. …”
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  2. 1122
    “…OBJECTIVES: To evaluate the efficacy of bone texture fractal dimension (FD) analysis method in predicting implant stability from intraoral periapical radiographs using two implant protocols. …”
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  3. 1123
  4. 1124
  5. 1125
    “…The key findings were that shapes and distribution of malignant cell clusters (by binary fractal dimension; AUC = 0.29), their contour shapes (by outline fractal dimension; AUC = 0.31) and intensity of the pan-cytokeratin immunostaining (by mean pixel intensity; AUC = 0.30) offered significant performance in metastasis risk prognostication. …”
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  6. 1126
  7. 1127
    “…The metal nanoparticles spontaneously aggregate into fractal structures in the colloid, which could then be drop-cast onto a substrate. …”
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  8. 1128
    “…METHODS: We propose a new parallelizable three-dimensional (3D) path planning approach called Adaptive Hermite Fractal Tree (AHFT), which is able to generate 3D obstacle-free trajectories that satisfy curvature constraints given a specified start and target pose. …”
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  9. 1129
  10. 1130
    “…Multioscillatory outputs in dissolved gases with 13 h, 40 min, and 4 min periods gave statistical self-similarity in power spectral and relative dispersional analyses: i.e., complex nonlinear (chaotic) behavior and a functional scale-free (fractal) network operating simultaneously over several timescales.…”
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  11. 1131
    “…The shielding performance of the fractal sample filled by CNTs and CIPs simultaneously has a comprehensive improvement in the whole scope of 1–18 GHz, especially for the sample with n = 2. …”
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  12. 1132
  13. 1133
    “…Scale-mass distribution rules and fractal dimension characteristics of fragments were studied based on the screening statistical method and the fractal theory. …”
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  14. 1134
    por Castillo, Oscar, Melin, Patricia
    Publicado 2020
    “…We describe in this paper a hybrid intelligent approach for forecasting COVID-19 time series combining fractal theory and fuzzy logic. The mathematical concept of the fractal dimension is used to measure the complexity of the dynamics in the time series of the countries in the world. …”
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  15. 1135
    por Yang, Taicong
    Publicado 2021
    “…Moreover, a novel chemiresistive gas sensor is fabricated combining the characteristics of carbon nanotubes and fractal geometry, and a test with exposure to nitric oxide showed that the sensors with fractal electrode structures improved the gas sensing sensitivity over sensors with traditional geometrical structures. …”
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  16. 1136
    “…The microhardness was measured using a Vickers method, while fractographic, microstructural, texture and fractal dimension (FD) analyses were performed using SEM, optical microscope and picture analysis methods. …”
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  17. 1137
    “…The rough internal surfaces of the pore were evaluated by categorizing them into fractals D(1), D(2), and D(3). It is observed that the D(2) type of fractals is in abundance associated with mesopores. …”
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  18. 1138
    “…SIMPLE SUMMARY: This study aimed to investigate the efficacy of implementation of novel skin surface fractal dimension features as an auxiliary diagnostic method for melanoma recognition. …”
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  19. 1139
  20. 1140
    “…Vascular perfusion density, fractal dimension, and lacunarity were computed by means of fractal analysis of neovascular en face optical coherence tomography angiography slabs. …”
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