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Fractales
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1281“…However, box-covering dimensions are only applicable to fractal networks. The construction of these network-dimensions relies on concepts proposed to measure fractality or complexity of irregular sets in [Formula: see text] . …”
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1282por Kiviniemi, Vesa, Remes, Jukka, Starck, Tuomo, Nikkinen, Juha, Haapea, Marianne, Silven, Olli, Tervonen, Osmo“…Trends with 1/f characteristics comprise fractal properties with repeating oscillation patterns in multiple time scales. …”
Publicado 2009
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1283por Song, Panqi, Tu, Xiaoqing, Bai, Liangfei, Sun, Guangai, Tian, Qiang, Gong, Jian, Zeng, Guiyu, Chen, Liang, Qiu, Lili“…Scattering results reveal that the external surface of micro-sized TATB crystallites are continuous and smooth interfaces and their internal pores display a surface fractal structure (surface fractal dimension 2.15 < D(S) < 2.25), while the external surface of nano-sized TATB particles exhibit a surface fractal structure (surface fractal dimension 2.36 < D(S) < 2.55) and their internal pores show a two-level volume fractal structure (large voids consist of small voids). …”
Publicado 2019
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1284“…Differential entropy, along with fractal dimension, is herein employed to describe and interpret the shape complexity of self-similar organic islands. …”
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1285“…As a generalization of fractal analysis, multifractal analysis (MFA) is a useful way to systematically describe the spatial heterogeneity of both theoretical and experimental fractal patterns. …”
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1286por Nicastro, Nicolas, Malpetti, Maura, Cope, Thomas E., Bevan-Jones, William Richard, Mak, Elijah, Passamonti, Luca, Rowe, James B., O’Brien, John T.“…However, neurodegenerative diseases may also affect the complexity of cortical shape, such as the fractal dimension of the brain surface. OBJECTIVE: In this study, we aimed at assessing the regional patterns of cortical thickness and fractal dimension changes in a cross-sectional cohort of patients with AD and FTD. …”
Publicado 2020
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1287“…OBJECTIVES: Fractal analysis is a mathematical method used for the calculation of bone trabeculation and lacunarity. …”
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1288“…Recently, we put forward a new signal amplification technique, which we termed fluorescent signal amplification via cyclic staining of target molecules (FRACTAL). FRACTAL amplifies IF signals by repeatedly labeling target proteins with a pair of secondary antibodies that bind to each other. …”
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1289“…Considerations involve anomalous diffusion (Lévy flights), fractal geometry (fractal-β, bi-fractal and multi-fractal model) and fractional dynamics. …”
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1290“…Their surface morphology from impact fracture were imaged with scanning electron microscopy (SEM) and investigated by calculating their fractal dimensions. Then, linear regression was used to explore the relationship between fractal dimension and impact strength of the resultant cellulose/PLA composite materials. …”
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1291“…The predictions from the apparent gas permeability model based on the fractal theory match well with the published permeability model and experimental data, which verifies the rationality of the present fractal apparent gas permeability model.…”
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1292“…Fractal geometry has been applied widely in the analysis of medical images to characterize the irregular complex tissue structures that do not lend themselves to straightforward analysis with traditional Euclidean geometry. …”
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1293por Pan, Hongyu, Wang, Junyan, Du, Guanyi, Wang, Kang, Zhang, Lei, He, Suinan, Song, Shuang“…The fractal dimension was linearly correlated with the UCS and porosity. …”
Publicado 2022
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1294por Zhang, Ziqi, Lee, Kelvin C. M., Siu, Dickson M. D., Lo, Michelle C. K., Lai, Queenie T. K., Lam, Edmund Y., Tsia, Kevin K.“…Complex and irregular cell architecture is known to statistically exhibit fractal geometry, i.e., a pattern resembles a smaller part of itself. …”
Publicado 2023
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1295“…The fragment size distribution of the specimen has obvious fractal characteristics. In addition, its fractal dimension increases with the increase of loading rate and heating temperature, the average size of the specimen fragments decreases correspondingly, and the fracture of the specimen becomes more serious. …”
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1296“…A method to describe the roughness by fractal dimension and fractal intercept. We put the fractal dimension and fractal intercept into Matlab to randomly generate three-dimensional laser scanning data of tunnels. …”
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1297por Guo, Junqing, Zhang, Xiaoyu, Lu, Chunsheng, Chai, Zhaoyun, Kang, Guanxian, Zhao, Guofei, Kang, Tianhe, Zhang, Shirui, Li, Hengzhong“…[Image: see text] Quantitative characterization of the change in the cleat and pore structures and fractal dimensions in anthracite after electrochemical modification is crucial for better understanding of the modification effect. …”
Publicado 2022
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1298“…In this paper, Image-Pro Plus 6.0 software was used to extract the data from SEM images, and the parameters of the area, and the perimeter, aspect ratio and roundness of the pores in the SEM images were obtained. The fractal characteristics of the pores in the SEM image were obtained by using the slit island method fractal theory. …”
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1299por Topoliński, Tomasz, Mazurkiewicz, Adam, Jung, Stanislaw, Cichański, Artur, Nowicki, Krzysztof“…The aim of this study was to find out if the values of volume, fractal dimension, and bone mineral density are correlated with bone strength. …”
Publicado 2012
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1300“…Fractal analyses have become very popular and have been applied on a wide variety of empirical time series. …”
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