Results 141 to 150 of about 51,149 (311)

Mechanical stability in flexible perovskite solar cells: Interface engineering and device design

open access: yesFlexMat, EarlyView.
Statistics of the improvement methods for f‐PSCs. Abstract Flexible perovskite solar cells (f‐PSCs) demonstrate significant potential for application in next‐generation wearable electronic devices and photovoltaic building integration due to their high power conversion efficiency and excellent power‐to‐weight ratio. However, the inherent brittleness of
Hong‐Yi Hou   +3 more
wiley   +1 more source

Donor‐acceptor fractal synergy: Decoding self‐similarity for stable organic photovoltaics

open access: yesFlexMat, 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

Multi-Fractal Spectral Analysis of the 1987 Stock Market Crash [PDF]

open access: yes
The multifractal model of asset returns captures the volatility persistence of many financial time series. Its multifractal spectrum computed from wavelet modulus maxima lines provides the spectrum of irregularities in the distribution of market returns ...
CORNELIS A. LOS, ROSSITSA M. YALAMOVA
core  

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

open access: yesJournal 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

Assessing texture pattern in slum across scales: an unsupervised approach

open access: yes, 2005
According to the Global Report on Human Settlements (United Nations, 2003), almost 1 billion people (32% of the world ’s population) live in squatter settlements or slums.
Sobreira, F., Barros Filho, M.
core  

Oleogels as Emerging Solid Fat Substitutes: Basic Characteristics, Preparation Strategies, and Food Applications

open access: yesFood Safety and Health, EarlyView.
This article reviews the basic characteristics, factors affecting properties of oleogels, and preparation methods of oleogels. Meanwhile, their applications in meat products, dairy products, baked goods, and delivering bioactive compounds are highly summarized.
Wenyuan Zhang   +6 more
wiley   +1 more source

Scaling and allometry in the building geometries of Greater London

open access: yes, 2008
Many aggregate distributions of urban activities such as city sizes reveal scaling but hardly any work exists on the properties of spatial distributions within individual cities, notwithstanding considerable knowledge about their fractal structure.
D. Smith   +11 more
core   +1 more source

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

open access: yesInternational 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

Influence of thresholding in mass and entropy dimension of 3-D soil images

open access: yes, 2008
With the advent of modern non-destructive tomography techniques, there have been many attempts to analyze 3-D pore space features mainly concentrating on soil structure.
Sanchez Oreja, Maria Elena   +5 more
core  

Technological Evolution in Fintech: A Decadal Scientometric and Systematic Review of Developments and Criticisms

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT This study aims to classify pivotal fintech innovations and explore the prospects and pitfalls associated with emerging fintech services extensively discussed in the literature. We conducted a multistage systematic review of research published on fintech over the past decade from a technological perspective. Using the Preferred Reporting Items
Muhammad Imran Qureshi, Nohman Khan
wiley   +1 more source

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