Results 91 to 100 of about 1,358 (200)

Enhancing Volatility Prediction: A Wavelet‐Based Hierarchical Forecast Reconciliation Approach

Journal of Forecasting, Volume 45, Issue 4, Page 1652-1664, July 2026.
ABSTRACT Forecasting realized volatility (RV) has been widely studied, with numerous techniques developed to enhance predictive accuracy. Among these techniques, the use of RV decompositions based on intraday asset returns has been applied. However, the use of a frequency‐based decomposition, which provides unique insights into the dynamics of RV ...
Adam Clements, Ajith Perera
wiley   +1 more source

Some Hermite-Hadamard and Ostrowski type inequalities for fractional integral operators with exponential kernel [PDF]

, 2019
WOS: 000481498100003We firstly establish Hermite-Hadamard type integral inequalities for fractional integral operators. Secondly, we give new generalizations of fractional Ostrowski type inequalities through convex functions via Holder and power means ...
Sarıkaya, Mehmet Zeki, Yıldırım, Hüseyin, Sarikaya, Mehmet Zeki, Budak, Hüseyin, Yildirim, Hüseyin, Usta, Fuat   +5 more
core   +2 more sources

Electric Field‐Induced Dark Current Steering in MAPbI3/Nb2CTx Photodetector Toward Weak‐Light Single‐Pixel Imaging

Rare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT In conventional photoconductive detectors, the shared collection path for dark current and photocurrent imposes a fundamental compromise between noise suppression and signal responsivity. To break this trade‐off, we introduce a device architecture featuring a strategically integrated third electrode within a MAPbI3/Nb2CTx heterostructure. This
Yan‐Wei Lv, Zhi‐Hong Zhang, Ai Fu, Hao‐Zhi Zhang, Hong‐Chao Liu, Kar Wei Ng, Zhi‐Peng Wei, Shuang‐Peng Wang   +7 more
wiley   +1 more source

Hermite-hadamard type inequalities for B-1-convex functions involving generalized fractional integral operators [PDF]

, 2018
WOS: 000461186000025B-1-convexity is an abstract convexity type. We obtained Hermite-Hadamard inequality for B-1-convex functions. But now, there are new and more general integral operator types that are fractional integrals.
Yeşilce, İlknur, Adilov, Gabil
core   +1 more source

Statistical Inversion of Sea Surface Temperature to Predict Submesoscale Near‐Surface Ocean Currents

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract Direct in situ measurements of sea surface currents (SSC) at submesoscales (1–100 km) are challenging. For this reason, inversion techniques have been utilized to infer SSC from satellite sea surface temperature (SST) data, which are straightforward to obtain. However, existing inversion methods often do not adequately account for uncertainty.
Rick de Kreij, Andrew Zammit‐Mangion, Matt Rayson, Nicole Jones, Andrew Zulberti   +4 more
wiley   +1 more source

AlignPCA‐2D: PCA‐reduced Euclidean vector alignment for 2D classification in cryo‐EM

Acta Crystallographica Section D, Volume 82, Issue 7, Page 727-739, July 2026.
We introduce AlignPCA‐2D, a PCA‐space Euclidean alignment method for rapid and interpretable 2D classification of cryo‐EM particle images. The approach preserves essential structural variability while greatly reducing computational cost, offering a lightweight alternative to existing large‐scale cryo‐EM classification pipelines.Cryogenic electron ...
E. Ramírez-Aportela, O. L. Zarrabeitia, Y. C. Fonseca, T. Ceska, S. Subramaniam, J. M. Carazo, C. O. S. Sorzano   +6 more
wiley   +1 more source

Inequalities for B $\mathbb{B}$-convex functions via generalized fractional integral

Journal of Inequalities and Applications, 2019
Recently, fractional calculus has become a very popular and important area. Specially, fractional integral inequalities have been studied by different authors.
Ilknur Yesilce
doaj   +1 more source

Certain Hermite-Hadamard type inequalities via generalized k-fractional integrals

Journal of Inequalities and Applications, 2017
Some Hermite-Hadamard type inequalities for generalized k-fractional integrals (which are also named ( k , s ) $(k,s)$ -Riemann-Liouville fractional integrals) are obtained for a fractional integral, and an important identity is established.
Praveen Agarwal, Mohamed Jleli, Muharrem Tomar   +2 more
doaj   +1 more source

Mellin transform analysis and integration by parts for Hadamard-type fractional integrals

Journal of Mathematical Analysis and Applications, 2002
The authors consider the known construction of Hadamard fractional integration \[ \mathcal{I}^\alpha_{0+,\mu} f(x)= \frac{1}{\Gamma(\alpha)}\int_0^x\left(\frac{u}{x}\right) ^\mu \left(ln \frac{x}{u}\right)^{ \alpha -1}\frac{f(u) du}{u} \] and some of their modifications. These constructions are invariant with respect to dilations and are related to the
Butzer, Paul L., Kilbas, Anatoly A., Trujillo, Juan J.   +2 more
openaire   +2 more sources

Generalized Error Bounds for Mercer-Type Inequalities in Fractional Integrals with Applications

Universal Journal of Mathematics and Applications
Fractional integral inequalities have emerged as powerful and versatile tools in advancing both pure and applied mathematics in recent years. Numerous researchers have recently introduced various generalized inequalities involving fractional integral ...
Arslan Munir, Hüseyin Budak, Artion Kashuri   +2 more
doaj   +1 more source