Results 81 to 90 of about 3,260,729 (219)

On a Study of (s; t)-Generalized Pell Sequence and its Matrix Sequence

, 2020
First of all in this article, we consider (s; t)-type sequences suchas (s; t)-Pell sequence hPn (s; t)i, (s; t)-Pell-Lucas sequence hQn (s; t)iand (s; t)-Modified Pell sequence hRn (s; t)i.
Paula Catarino; Department of Mathematics, School of Science and Technology, University of Tras-os-Montes e Alto Douro (Vila Real Portugal)., Arfat Ahmad Wani; Arfat Ahmad Wani School of Studies in Mathematics, Vikram University, Ujjain, India., Serpil Halici; Department of Mathematics, Faculty of Arts and Sciences, Sakarya University.   +2 more
core  

Silver‐Alloyed Wide‐Bandgap (Ag,Cu)(In,Ga)S2 Thin‐Film Solar Cells With 15.5% Efficiency

Progress in Photovoltaics: Research and Applications, Volume 34, Issue 7, Page 942-956, July 2026.
This study reports improvements in compositional homogeneity, microstructure, enhanced radiative recombination, and extended carrier lifetime of CIGS absorber via Ag incorporation. The optimal Ag‐alloyed CIGS solar cells achieve 15.5% PCE and 948 mV VOC, competing with the VOC of the Ag‐free reference sample from the same batch.
Yucheng Hu, Ece Washbrook, Arivazhagan Valluvar Oli, Andrea Griesi, Yurii P. Ivanov, Mariam Pelling, Simon M. Fairclough, Kulwinder Kaur, Michele Melchiorre, Adam Hultqvist, Tobias Törndahl, Wolfram Hempel, Wolfram Witte, Giorgio Divitini, Susanne Siebentritt, Rachel A. Oliver, Gunnar Kusch   +16 more
wiley   +1 more source

Time Quasilattices in Dissipative Dynamical Systems

SciPost Physics, 2018
We establish the existence of 'time quasilattices' as stable trajectories in dissipative dynamical systems. These tilings of the time axis, with two unit cells of different durations, can be generated as cuts through a periodic lattice spanned by two ...
Felix Flicker
doaj   +1 more source

Diagnostic Features of Discogenic Low Back Pain: A Narrative Review and Suggested Areas for Future Research and Clinical Practice

JOR SPINE, Volume 9, Issue 2, June 2026.
ABSTRACT Background Chronic low back pain is a leading cause of global disability, with discogenic low back pain (DLBP), mechanically stimulated pain arising from the intervertebral disc, representing an important but often under‐recognized subtype. DLBP arises from chronic structural and metabolic changes within the intervertebral disc, leading to ...
William Roger Peters, Ashish D. Diwan, Mario Giuseppe Zotti   +2 more
wiley   +1 more source

Non-Fisherian generalized Fibonacci numbers [PDF]

Notes on Number Theory and Discrete Mathematics
Using biology as inspiration, this paper explores a generalization of the Fibonacci sequence that involves gender biased sexual reproduction. The female, male, and total population numbers along with their associated recurrence relations are considered ...
Thor Martinsen
doaj   +1 more source

Toward an Efficient Shifted Cholesky QR for Applications in Model Order Reduction Using pyMOR

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Many model order reduction (MOR) methods rely on the computation of an orthonormal basis of a subspace onto which the large full order model is projected. Numerically, this entails the orthogonalization of a set of vectors. The nature of the MOR process imposes several requirements for the orthogonalization process.
Maximilian Bindhak, Art J. R. Pelling, Jens Saak   +2 more
wiley   +1 more source

Mimicking the Ocean: Critical Challenges in Scaffold Design and Tissue Texturization for Cell‐Cultured Seafood

Journal of Food Science, Volume 91, Issue 6, June 2026.
ABSTRACT Cellular aquaculture offers a sustainable solution to global seafood demand, yet the production of high‐value, whole‐cut fillets is hindered by the “texture gap,” the inability to replicate the complex, anisotropic architecture of native fish muscle and its collagenous myosepta.
Mustafa Öz, Enes Üstüner
wiley   +1 more source

Common values of two k-generalized Pell sequences [PDF]

Notes on Number Theory and Discrete Mathematics
Let k≥2 and let (Pₙ⁽ᵏ⁾)ₙ≥₂₋ₖ be the k-generalized Pell sequence defined by Pₙ⁽ᵏ⁾=2Pₙ₋₁⁽ᵏ⁾+2Pₙ₋₂⁽ᵏ⁾+...+2Pₙ₋ₖ⁽ᵏ⁾ for n≥2 with initial conditions P₋₍ₖ₋₂₎⁽ᵏ⁾=P₋₍ₖ₋₃₎⁽ᵏ⁾=...=P₋₁⁽ᵏ⁾=P₀⁽ᵏ⁾=0, and P₁⁽ᵏ⁾=1.
Zafer Şiar, Florian Luca, Faith Shadow Zottor   +2 more
doaj   +1 more source

On Some Relationships Among Pell, Pell-Lucas and Modified Pell Sequences

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2010
In this study, Pell, Pell-Lucas and Modified Pell numbers are investigated. Using Binet formulas for these sequences, some relations among these sequences are obtained. Also, some sum formulas are given by these properties.
Serpil Halıcı, Ahmet Daşdemir
openaire   +1 more source

Spin‐System‐Selective 2D J‐Spectroscopy

Chemistry–Methods, Volume 6, Issue 5, May 2026.
A new family of experiments is presented that extracts the spectra of individual spin systems. Spin‐system‐selective 2D J‐resolved (SSS2DJ) spectroscopy reveals chemical shift information at "pure shift" resolution, while retaining multiplet structure in a simple 2D spectrum.
Ellie Davies, Gareth A. Morris, Soumya S. Roy, Ralph W. Adams   +3 more
wiley   +1 more source