Results 51 to 60 of about 3,271,968 (288)

Evaluation on the equivalence between the backward/forward iterative sweep and the triangular-based power flow methods in electrical distribution networks

Revista UIS Ingenierías
This paper demonstrates that graph-based power flow methods for strictly radial distribution networks (one based on the upper-triangular matrix and the other on the incidence matrix or classical backward/forward power flow method) are equivalent ...
Oscar Danilo Montoya-Giraldo, Walter Gil-González, Edwin Rivas-Trujillo   +2 more
doaj   +1 more source

METODE ALTERNATIF DALAM MENENTUKAN SOLUSI PARTIKULAR PERSAMAAN EULER-CAUCHY

Barekeng, 2021
Euler-Cauchy equation is the typical example of a linear ordinary differential equation with variable coefficients. In this paper, we apply the alternative method to determine the particular solution of Euler-Cauchy nonhomogenous with polynomial and ...
Mariatul Kiftiah, Yudhi Yudhi, Alvi Yanitami   +2 more
doaj   +1 more source

GENERALIZED CAYLEY GRAPH OF UPPER TRIANGULAR MATRIX RINGS

Bulletin of the Korean Mathematical Society, 2016
Summary: Let \(R\) be a commutative ring with the non-zero identity and \(n\) be a natural number. \(\Gamma ^n_R\) is a simple graph with \(R^n\setminus\{0\}\) as the vertex set and two distinct vertices \(X\) and \(Y\) in \(R^{n}\) are adjacent if and only if there exists an \(n \times n\) lower triangular matrix \(A\) over \(R\) whose entries on the ...
Afkhami, Mojgan, Hashemifar, Seyed Hosein, Khashyarmanesh, Kazem   +2 more
openaire   +3 more sources

Grayscale Photomasks Enable Noncontact Optical Patterning of Hydroxypropyl Cellulose Gels for Dynamic Art

Advanced Functional Materials, EarlyView.
Mask‐encoded UV exposure translates digital color information into pixel‐resolved structural‐color patterns in hydroxypropyl cellulose gels. Gaussian‐process‐guided calibration links UV processing conditions, wavelength, and mask opacity, enabling parallel fabrication of multicolor images in a single 10 s exposure.
Mengting Ye, Yunyi Zhu, Sai Sabareesh KS, Md Ashiqur Rahman Alif, Yichen Wan, Ruobing Bai, Narges Pourjafarian, Stefanie Mueller, Hongli Zhu   +8 more
wiley   +1 more source

Beyond-Classical Ferroelectric Metamaterials: 3D-Printed Planar Lattices With Programmable Electro-Thermo-Mechanical Coupling. [PDF]

Adv Sci (Weinh)
Planar ferroelectric lattices with rationally‐tailored topology and polarization achieve programmable piezoelectric and pyroelectric properties. Analytical modeling, homogenization, and experiments collectively demonstrate enhanced and tunable longitudinal, transverse, and shear piezoelectric responses, together with substantially improved ...
Shi J, Ju K, Chen H, Orsat V, Sasmito AP, Ahmadi A, Akbarzadeh A.   +6 more
europepmc   +2 more sources

Unified Pressure and Field Response Across Distinct Charge‐Order Regimes in Ti‐Doped CsV3Sb5

Advanced Functional Materials, EarlyView.
We microscopically investigate the interplay between charge order and superconductivity in a kagome superconductor across regimes of long‐ and short‐range charge order. Hydrostatic‐pressure and magnetic‐field μSR$\mu{\rm SR}$ measurements reveal remarkably similar superconducting and normal‐state time‐reversal‐symmetry‐breaking responses in both ...
P. Kral, S.S. Islam, Andrea N. Capa Salinas, J.N. Graham, O. Gerguri, A. Doll, J.A. Krieger, T.J. Hicken, G. Simutis, H. Luetkens, R. Khasanov, S.D. Wilson, Z. Guguchia   +12 more
wiley   +1 more source

Image encryption based on feedback control discrete switching hyperchaotic system and QR decomposition

AIP Advances
A two-dimensional switching-controlled hyperchaotic system has been developed that enhances the randomness of the system through dynamic switching of the control parameter. The proposed hyperchaotic system is then applied to image encryption.
Zhiben Zhuang, Lingfen Ding, Jun Cheng, Shiqiang Chen, Jingyi Liu   +4 more
doaj   +1 more source

Semicommutative and Armendariz Matrix Rings

Axioms
In this paper, we construct some interesting high-order upper triangular matrix rings, which have semicommutative and Armendariz properties. Also, the relatively maximality of these rings as subrings of certain matrix rings is considered.
Gang Yang
doaj   +1 more source

On Factorizations of Upper Triangular Nonnegative Matrices of Order Three

Discrete Dynamics in Nature and Society, 2015
Let T3(N0) denote the semigroup of 3×3 upper triangular matrices with nonnegative integral-valued entries. In this paper, we investigate factorizations of upper triangular nonnegative matrices of order three.
Yi-Zhi Chen
doaj   +1 more source

Configuration‐Encoded Cell Alignment by Light‐Gated Silicon Photovoltaic Microcell Arrays

Advanced Functional Materials, EarlyView.
Light‐gated silicon photovoltaic microcells convert pulsed illumination into localized electrical cues. Arranging otherwise similar microcells into four‐lobed, six‐lobed, or circular patterns directs fibroblasts into corresponding local arrangements without wired stimulation.
Yifan Tao, Ilayda Namli, Joseph Christakiran Moses, Youdi Liu, Suihong Liu, Syed Hasan Askari Rizvi, Yasar Ozer Yilmaz, Ibrahim T. Ozbolat   +7 more
wiley   +1 more source