Results 121 to 130 of about 21,626 (312)

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, Zhongwei Ge, Yiyun Li, Fengzhe Cui, Zhen Fu, Mingxu Zhou, Dongcheng Jiang, Jiangkai Sun, Jianqiang Liu, Kangning Zhang, Feng Chen, Hang Yin, Yanming Sun, Xiaotao Hao   +13 more
wiley   +1 more source

Fractal Characteristics of the Spatial Distribution of Mine Earthquake Sources in the Vicinity of a Fault: A Case Study in the Ashele Copper Mine

Fractal and Fractional
Potential faults are common sensitive geological bodies that affect the safe mining of underground mines, often leading to major accidents such as rock instability and rockburst during mining.
Congcong Zhao, Shigen Fu, Yinghua Huang
doaj   +1 more source

Extended Minimal Atomicity through Nondifferentiability: A Mathematical-Physical Approach

Advances in Mathematical Physics, 2019
The mathematical concept of minimal atomicity is extended to fractal minimal atomicity, based on the nondifferentiability of the motion curves of physical system entities on a fractal manifold.
Gabriel Gavriluţ, Alina Gavriluţ, Maricel Agop   +2 more
doaj   +1 more source

Financial Applications of Human Perception of Fractal Time Series

, 2015
The purpose of this thesis is to explore the interaction between people’s financial behaviour and the market’s fractal characteristics. In particular, I have been interested in the Hurst exponent, a measure of a series’ fractal dimension and ...
Sobolev, D
core  

Fractal and multifractal properties of a family of fractal networks

, 2014
In this work, we study the fractal and multifractal properties of a family of fractal networks introduced by Gallos et al (2007 Proc. Nat. Acad. Sci. USA 104 7746).
Li, Bao-Gen, Zhou, Yu, Yu, Zu-Guo
core   +1 more source

Forecasting Volatility of Commodity, Currency, and Stock Markets: Evidence From Markov‐Switching Multifractal Models

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, Mawuli Segnon, Oguzhan Cepni, Rangan Gupta   +3 more
wiley   +1 more source

Scaling theory of fractal complex networks

Scientific Reports
AbstractWe show that fractality in complex networks arises from the geometric self-similarity of their built-in hierarchical community-like structure, which is mathematically described by the scale-invariant equation for the masses of the boxes with which we cover the network when determining its box dimension.
Agata Fronczak, Piotr Fronczak, Mateusz J. Samsel, Kordian Makulski, Michał Łepek, Maciej J. Mrowinski   +5 more
openaire   +4 more sources

Fractal dimension versus density of the built-up surfaces in the periphery of Brussels. [PDF]

This paper aims at showing the usefulness of the fractal dimension for characterizing the spatial structure of the built-up surfaces within the periurban fringe.
Marie-Laurence Dekeersmaecker, Pierre Frankhauser, Isabelle Thomas   +2 more
core  

An Investigation of the Relationship Between Central Bank Unconventional Monetary Policy and Bitcoin Activity

International Journal of Finance &Economics, EarlyView.
ABSTRACT This article investigates whether the unconventional monetary policy (UMP) measures pursued by the Federal Reserve, the Bank of England, the Bank of Japan, and the European Central Bank since the Global Financial Crisis (GFC) are associated with an appetite for cryptocurrency.
Niamh Wylie, Martha O'Hagan‐Luff
wiley   +1 more source

Myocardial Perfusion Defects in Hypertrophic Cardiomyopathy Mutation Carriers

Journal of the American Heart Association, EarlyView., 2021
Background Impaired myocardial blood flow (MBF) in the absence of epicardial coronary disease is a feature of hypertrophic cardiomyopathy (HCM). Although most evident in hypertrophied or scarred segments, reduced MBF can occur in apparently normal segments.
Rebecca K. Hughes, Claudia Camaioni, João B. Augusto, Kristopher Knott, Ellie Quinn, Gabriella Captur, Andreas Seraphim, George Joy, Petros Syrris, Perry M. Elliott, Saidi Mohiddin, Peter Kellman, Hui Xue, Luis R. Lopes, James C. Moon   +14 more
wiley   +1 more source