Results 41 to 50 of about 1,125,542 (261)
Comparative Analysis of the Volatility Structure of Cryptocurrencies
Ekoist Journal of Econometrics and Statistics, 2021 Cryptocurrency emerged as an alternative medium of exchange developed after the 2008 global financial crisis to replace the traditional money system.
Fatih Kazova, Ayça Büyükyılmaz Ercan
doaj +1 more source
Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies
Advanced Functional Materials, EarlyView.Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke +3 more
wiley +1 more source
Implantable Ionic Memristors Based on Natural Polymer Heterojunctions
Advanced Functional Materials, EarlyView.We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee +6 more
wiley +1 more source
Inflation and stock return volatility in selected African countries: A GARCH-MIDAS approach
Scientific AfricanAmidst persistent inflationary pressures in Africa and central banks raising rates to counter inflation, leading to a shift from stocks to alternative assets and impacting stock return volatility, this paper investigates the influence of inflation on ...
Kamaludeen Muhammad +7 more
doaj +1 more source
Predicting Abnormal Stock Return Volatility Using Textual Analysis of News ‒ A Meta-Learning Approach [PDF]
Amfiteatru Economic, 2018 Textual analysis of news articles is increasingly important in predicting stock prices. Previous research has intensively utilized the textual analysis of news and other firmrelated documents in volatility prediction models.
Renáta Myšková +2 more
doaj +1 more source
Multimode Oxide‐Based Optoelectronic Memtransistor for In‐Sensor Vision Processing
Advanced Functional Materials, EarlyView.A multimode optoelectronic memtransistor (OEMT) is demonstrated for vision explainable artificial intelligence (VXAI) hardware. By integrating optical sensing, electrical masking, and non‐volatile memory, the device enables key operations required for generating saliency information.
Min Gu Lee +10 more
wiley +1 more source
Equity return volatility in Africa’s stock markets: A dynamic panel approach
Cogent Economics & Finance, 2023 This study examines the determinants of time-varying return volatility of Africa’s equity markets using monthly indices of eight top African stock markets.
Godfred Aawaar +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Sodium alginate regulates interfacial ion transport and retention in electrolyte‐gated synaptic transistors. The carboxylate‐rich polymeric network forms a dynamic interfacial ion‐diffusion barrier that facilitates ion injection during programming while suppressing ion back‐diffusion, thereby stabilizing the electrochemically doped channel state.
Chaeyeon Han +6 more
wiley +1 more source
Scientific Annals of Economics and Business, 2021 With this study, we aim to determine the effect of the Covid-19 pandemic on the return volatility of the DJI, the DAX, the FTSE100 and the CAC40 stock indexes.
Letife Özdemir +3 more
doaj +1 more source
Intra- and Inter-regional Return and Volatility Spillovers across Emerging and Developed Markets: Evidence from Stock Indices and Stock Index Futures [PDF]
, 2016 We provide empirical evidence on the patterns of intra- and inter-regional transmission of information across 10 developed and 11 emerging markets in Asia, the Americas, Europe and Africa using both stock indices and stock index futures.
Larisa Yarovaya (16655469) +8 more
core +1 more source