Results 111 to 120 of about 4,922,677 (379)

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

open access: yesAdvanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite   +5 more
wiley   +1 more source

DISPOSITION EFFECT AMONG BRAZILIAN EQUITY FUND MANAGERS [PDF]

open access: yesRAE: Revista de Administração de Empresas, 2015
The disposition effect predicts that investors tend to sell winning stocks too soon and ride losing stocks too long. Despite the wide range of research evidence about this issue, the reasons that lead investors to act this way are still subject to much ...
Eduardo Pozzi Lucchesi   +2 more
doaj  

On Markov Modulated Mean-Reverting Price-Difference Models

open access: yesSultan Qaboos University Journal for Science, 2008
In this paper we develop a stochastic model incorporating a double-Markov modulated mean-reversion model. Unlike a price process the basis process X can take positive or negative values.
W. P. Malcom   +2 more
doaj   +1 more source

Enforcing mean reversion in state space models for prawn pond water quality forecasting [PDF]

open access: yesComputers and Electronics in Agriculture, 2020
J. Dabrowski   +3 more
semanticscholar   +1 more source

A Programmable Semiconductor Containing Active Molecular Photoswitches Located in the Crystal's Volume Phase

open access: yesAdvanced Functional Materials, EarlyView.
A novel approach for the design of functional semiconductors is presented, which utilizes the excellent optoelectronic properties of layered hybrid perovskites and the possibility to introduce a molecular photoswitch as the organic spacer. This concept is successfully demonstrated on a coumarin‐based system with the possibility to change the bandgap ...
Oliver Treske   +4 more
wiley   +1 more source

GHG in EUROPE. Evidence of persistence across markets using fractional integration

open access: yesEcological Indicators
This paper investigates the persistence of GHG in Europe, evaluating the effectiveness of government policies, including the Kyoto Protocol and the EU Council commitment.
Juan Infante   +2 more
doaj   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou   +3 more
wiley   +1 more source

An optimal mean-reversion trading rule under a Markov chain model

open access: yes, 2016
This paper is concerned with a mean-reversion trading rule. In contrast to most market models treated in the literature, the underlying market is solely determined by a two-state Markov chain.
Jingzhi Tie, Qing Zhang
semanticscholar   +1 more source

Frontier Advances of Emerging High‐Entropy Anodes in Alkali Metal‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Recent advances in microscopic morphology control of high‐entropy anode materials for alkali metal‐ion batteries. Abstract With the growing demand for sustainable energy, portable energy storage systems have become increasingly critical. Among them, the development of rechargeable batteries is primarily driven by breakthroughs in electrode materials ...
Liang Du   +14 more
wiley   +1 more source

Modeling Investor Behavior Using Machine Learning: Mean-Reversion and Momentum Trading Strategies

open access: yesComplexity, 2019
We model investor behavior by training machine learning techniques with financial data comprising more than 13,000 investors of a large bank in Brazil over 2016 to 2018.
Thiago Christiano Silva   +2 more
doaj   +1 more source

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