Results 61 to 70 of about 7,283 (217)
A commutative noncommutative fractal geometry
, 2011 In this thesis examples of spectral triples, which represent fractal sets, are examined and new insights into their noncommutative geometries are obtained.
Samuel, Tony; id_orcid, Samuel, Anthony
core +1 more source
, 2023 Technological innovation, the financial market, and the real economy are mutually promoting and restricting. Considering the interference of market-noise information, this paper applies the wavelet-denoising method of the soft- and hard-threshold ...
Jinchuan Ke, Yu Duan, Chao Xu, Yue Zhang
core +1 more source
Frontiers in Physics, 2020 The spatial distribution of a population is not homogeneous—some areas attract many residents, while others do not. The spatial distribution of stores and facilities that have been coevolving with that of the population is also heterogeneous.
Mariko I. Ito, Takaaki Ohnishi
doaj +1 more source
Research on Multifractal Characteristics of Vehicle Driving Cycles
Machines, 2023 Vehicle driving cycles have complex characteristics, but there are few publicly reported methods for their quantitative characterization. This paper innovatively investigates their multifractal characteristics using the fractal theory to characterize ...
Mengting Yuan +3 more
doaj +1 more source
Multifractal Analysis of Choquet Capacities
Advances in Applied Mathematics, 1998 The authors sketch that in some applications a capacity is a better tool as a measure and the simplest generalization relaxing additivity constraint. For a sequence of Choquet capacities, a reference measure and a sequence of partitions of the interval \(\left[ 0,1\right[ \) they define different types of multifractal spectrum functions following the ...
Véhel, Jacques Lévy, Vojak, Robert
openaire +2 more sources
Donor‐acceptor fractal synergy: Decoding self‐similarity for stable organic photovoltaics
FlexMat, EarlyView.Morphological congruence between donor and acceptor refines the fractal structure of bulk heterojunction films and enhances their self‐similarity. This optimized multiscale morphology preserves charge‐transport pathways against external disturbances, suppresses structural degradation, and improves the operational stability of organic solar cells while ...
Runzheng Gu +13 more
wiley +1 more source
Journal of Forecasting, EarlyView.ABSTRACT This paper adopts a bivariate Markov‐switching multifractal (BMSM) model to reexamine comovement in SV between commodity, foreign exchange (FX), and stock markets. After the 2007–2008 global financial crisis understanding volatility linkages and the correlation structure between these markets becomes very important for risk analysts, portfolio
Ruipeng Liu +3 more
wiley +1 more source
Integrating Multifractal Features into Machine Learning for Improved Prediction
Fractal and FractionalThis study investigates the multifractal characteristics of the tanker freight market from 1998 to 2024. Using multifractal detrended fluctuation analysis (MF-DFA) and multifractal detrending moving average (MF-DMA), we analyze temporal correlations and ...
Feier Chen +4 more
doaj +1 more source
Distribution of Air Temperature Multifractal Characteristics Over Greece
Atmosphere, 2019 In this study, Multifractal Detrended Fluctuation Analysis (MF-DFA) is applied to daily temperature time series (mean, maximum and minimum values) from 22 Greek meteorological stations with the purpose of examining firstly their scaling behavior and then
Nikolaos Kalamaras +4 more
doaj +1 more source
Interplay Between Green Investment and Market Price Premia in Global Shipping
International Journal of Finance &Economics, EarlyView.ABSTRACT Existing research emphasises that the driver of green investment is its future profitability. This paper shows that other investors' decisions also influence green investment. We take the example of scrubber installation in shipping, which is optional by regulation but has an established market for trading its underlying asset.
Yao Shi +4 more
wiley +1 more source