Results 191 to 200 of about 82,773 (308)

Graph attention-based heterogeneous multi-agent deep reinforcement learning for adaptive portfolio optimization. [PDF]

Sci Rep
Zhang B.
europepmc   +1 more source

Collaborative Optimization of Electromagnetic Interference Shielding, Adaptive Multi‐Color, and Thermal Camouflage of Basalt Fibers by Temperature‐Induced Gradient Structure Control

Exploration, EarlyView.
Polychromatic BFs with exceptional EMI and thermal shielding were fabricated based on a “plasma activation‐ALD bridging‐chemical plating‐post annealing treatments” gradient functionalization strategy. As prepared, basalt fiber/fabric demonstrates outstanding EMI SE of 53.47 dB and thermal infrared camouflage effect.
Sijie Qiao, Zhicheng Shi, Annan He, Zhiyu Huang, Aixin Tong, Binhao Wang, Jun He, Jiaxin Wang, Wei Ke, Na Yao, Shichao Zhao, Yong Qin, Weilin Xu, Fengxiang Chen   +13 more
wiley   +1 more source

Oleogels, Bigels, and Emulgels: Fabrication, Application and Research Trends. [PDF]

Gels
Ghinea C, Leahu A.
europepmc   +1 more source

A Comparison of Realized Measures of Integrated Volatility: Price Duration‐ vs. Return‐Based Approaches

Journal of Forecasting, EarlyView.
ABSTRACT We study the accuracy of a variety of parametric price duration‐based realized variance estimators constructed via various financial duration models and compare their forecasting performance with the performance of various nonparametric return‐based realized variance estimators.
Björn Schulte‐Tillmann, Mawuli Segnon, Timo Wiedemann   +2 more
wiley   +1 more source

Hydrogen Damage Behavior of X80 Pipeline Steel Under AC Interference. [PDF]

Materials (Basel)
Li T, Li Z, Jiang K, Cai Y, Sun W, He Z, Zhao J, Cao T, Jin J, Chen W, Gou G.   +10 more
europepmc   +1 more source

Machine Learning Approaches to Forecast the Realized Volatility of Crude Oil Prices

Journal of Forecasting, EarlyView.
ABSTRACT This paper presents an evaluation of the accuracy of machine learning (ML) techniques in forecasting the realized volatility of West Texas Intermediate (WTI) crude oil prices. We compare several ML algorithms, including regularization, regression trees, random forests, and neural networks, to several heterogeneous autoregressive (HAR) models ...
Talha Omer, Kristofer Månsson, Pär Sjölander, Gazi Salah Uddin   +3 more
wiley   +1 more source

Origin of the high coercivity in FeNi inspired magnets. [PDF]

Sci Rep
Hernando A, de la Presa P, Jiménez-Rodríguez JA, García-Escorial A, Arranz-López D, Calvo J, Marín P, Llamas I, Navío C, Miranda R.   +9 more
europepmc   +1 more source

Coherent Forecasting of Realized Volatility

Journal of Forecasting, EarlyView.
ABSTRACT The QLIKE loss function is the stylized favorite of the literature on volatility forecasting when it comes to out‐of‐sample evaluation and the state of the art model for realized volatility (RV) forecasting is the HAR model, which minimizes the squared error loss for in‐sample estimation of the parameters.
Marius Puke, Karsten Schweikert
wiley   +1 more source

Exploring the Nexus Between Sustainability Index and Central European Stock Markets Competitiveness: Evidence Through Time–Frequency Analysis and SHAP

Journal of Forecasting, EarlyView.
ABSTRACT Sustainability has become an important factor shaping financial markets and investor behavior. This paper examines the relationship between sustainability indices and Central European stock markets using a time–frequency approach. Wavelet coherence is employed to capture time‐varying co‐movements between sustainability indices and stock market
Zuzana Janková, Dipak Kumar Jana, Michal Páleš, Elena Fleaca, Petr Dostál   +4 more
wiley   +1 more source

Bio‐Nanocomposite Film Based on Pectin From Citrus sinensis Peel Reinforced With Montmorillonite With Improved Mechanical and Barrier Properties

Future Postharvest and Food, EarlyView.
(1) Pectin from Malta (Citrus sinensis) peel. (2) Montmorillonite with various levels. (3) Bio‐nanocomposite film with pectin and montmorillonite. (i) Mechanical. (ii) Structural Characterization (iii) Thermal. (iv) Morphological. (v) Barrier. ABSTRACT The casting method was used to develop bio‐nanocomposite film by combining pectin extracted from ...
Divya Arora, Charanjiv Singh Saini
wiley   +1 more source