Results 81 to 90 of about 2,181,558 (234)

On General Alternating Tornheim-Type Double Series

Mathematics
In this paper, we express ∑n,m≥1ε1nε2mMn(u)Mm(v)nrms(n+m)t as a linear combination of alternating multiple zeta values, where εi∈{1,−1} and Mk(u)∈{Hk(u),H¯k(u)}, with Hk(u) and H¯k(u) being harmonic and alternating harmonic numbers, respectively.
Kwang-Wu Chen
doaj   +1 more source

Fast-individual-harmonic-extraction technique [PDF]

, 2005
One outcome of a PhD project (C H Ng, University studentship) A collaborative work (the Energy Systems Group, Northumbria and Durham University). It deals with the problem of harmonic suppression or elimination in power systems for safety and power ...
Busawon, Krishna, Ng, Chong, Putrus, Ghanim, Ran, Li   +3 more
core   +1 more source

Above Room Temperature Ferroelectricity in Epitaxially Strained KTaO3

Advanced Materials, EarlyView.
Through precise epitaxial engineering, the cubic and paraelectric KTaO3${\rm KTaO}_3$ is transformed into a robust ferroelectric. By leveraging lattice‐mismatched substrates to apply controlled epitaxial strain, a stable ferroelectric ground‐state is achieved with a transition temperature as high as 475 K, establishing KTaO3${\rm KTaO}_3$ as a highly ...
Tobias Schwaigert, Salva Salmani‐Rezaie, Sankalpa Hazra, Utkarsh Saha, Maya Ramesh, Aiden Ross, Betül Pamuk, Long‐Qing Chen, David A. Muller, Darrell G. Schlom, Venkatraman Gopalan, Kaveh Ahadi   +11 more
wiley   +1 more source

Lattice Strain and Built‐In Field Synergistically Boost Urea Oxidation via Dynamic NiOOH Mediation at Multiphase Heterointerfaces

Advanced Materials, EarlyView.
A sulfur‐doped lignin‐derived carbon‐coated Ni‐NiO‐MoO2 nanorod array was synthesized, exhibiting enhanced UOR performance ‐ due to lattice‐strain and built‐in electric field effects by multiphase heterogeneous interface in Ni‐NiO‐MoO2@SC, excellent corrosion resistance, mass‐transport ability, and long‐term stability (500 mA cm−2 at 1.53 V for 500 h ...
Jiawei Li, Liancen Li, Guangfu Qian, Zishan Cai, Yiping Cao, Yihao Xu, Ruyu Zhang, Jinli Chen, Changzhou Chen, Panagiotis Tsiakaras   +9 more
wiley   +1 more source

Descriptors to Dynamics: A Materials and Device Perspective on in‐Materio Physical Reservoir Computing for Neuromorphic Edge Intelligence

Advanced Materials, EarlyView.
Intrinsic material dynamics are harnessed as computational resources for neuromorphic in‐materio physical reservoir computing. Defects, ionic motion, interfaces, percolation, geometry, and biasing shape transient states that provide fading memory, nonlinearity, and high‐dimensional projection for simple readout. A descriptor‐to‐dynamics framework links
Kshitij RB Singh, Alif Syafiq Kamarol Zaman, Muzhen Xu, Yuki Usami, Saptarshi Das, Hirofumi Tanaka   +5 more
wiley   +1 more source

Hidden time-patterns in cyclic human movements: a matter of temporal Fibonacci sequence generation and harmonization

Frontiers in Human Neuroscience
Fibonacci sequences are sequences of numbers whose first two elements are 0, 1, and such that, starting from the third number, every element of the sequence is the sum of the previous two.
Cristiano Maria Verrelli, Lucio Caprioli, Marco Iosa, Marco Iosa   +3 more
doaj   +1 more source

Single‐Particle FRET Probes Heterogeneity in the Ligand Shell of Colloidal Perovskite Quantum Dots

Advanced Materials, EarlyView.
Single‐particle, single‐molecule Förster resonance energy transfer turns dye‐tagged ligands into nanorulers for the otherwise elusive organic shell of CsPbBr3 quantum dots. Distance variations within individual particles reveal pronounced local heterogeneity, while changes in the surrounding ligand chemistry shift the average dye–surface separation ...
Leon G. Feld, Oleksandr Kolomiiets, Noah A. Shahin, Sebastian Sabisch, Amrutha Rajan, Gabriele Rainò, Maksym V. Kovalenko   +6 more
wiley   +1 more source

Series related to generalized harmonic numbers and their applications

In this paper, we introduce three new generalizations of harmonic numbers. Connections are established by considering the rho-th derivative of the rising factorial for rho is an element of Z+ , leading to identities involving these generalized harmonic ...
Duran, Ömer, Ömür, Neşe
core   +1 more source

Several Congruences Related to Harmonic Numbers

, 2021
Let p be a prime greater than or equal to 5: In this paper, by usingthe harmonic numbers and Fermat quotient we establish congruencesinvolving the sums where H(m)k are the generalized harmonic numbers of ordermand En areEuler numbers.AMS (MOS) Subject ...
Laala Khaldi; EDTNLHM Laboratory, Department of Mathematics, ENS, Vieux-Kouba and Department of Mathematics, University of Bouira, 10000 Bouira, Farid Bencherif; USTHB, Faculty of Mathematics, LA3C laboratory, P.O. 32 El Alia 16111 Algiers, Abdellah Derbal; Ecole Normale Sup´erieure, Department of Mathematics, EDTNLHM Laboratory, BP 92, Vieux Kouba, Miloud Mihoubi; USTHB, Faculty of Mathematics, RECITS laboratory, P.O. 32 El Alia 16111 Algiers   +3 more
core  

Where Precursor Loading Stops Making a Difference: Resolving an Operational Infiltration Limit for Nanoparticle Synthesis Using Dual Quantification of Reverse Micelle Nanoreactors

Advanced Materials Interfaces, EarlyView.
A dual characterization strategy combining nanomechanical and mass measurements resolves a common operational loading threshold in reverse micelle nanoreactors. This transferable framework provides a rational strategy for optimizing precursor loading and nanoparticle synthesis, across template‐mediated fabrication systems.
Linan Cui, Pedro Q. Oliveira, Kyla N. Sask, Ayse Z. Turak   +3 more
wiley   +1 more source