Results 91 to 100 of about 349,838 (276)
A continued fraction expansion for a q-tangent function: An elementary proof
, 2008 We prove a continued fraction expansion for a certain $q$-tangent function that was conjectured by the present writer, then proved by Fulmek, now in a completely elementary ...
Prodinger, Helmut
core +2 more sources
Advanced Materials, EarlyView.Spin crossover composite filaments are implemented for the rational design of 4D‐printed mechanical metamaterials. The obtained bi‐material structures guided by a theoretical analysis based on analytical calculations and Finite Element Analysis simulations exhibit giant programmable positive or negative deformation with coefficients of thermal ...
Adelais Trapali +7 more
wiley +1 more source
A Complex Structure for Two-Typed Tangent Spaces
EntropyThis study concerns Riemannian manifolds with two types of tangent vectors. Let it be given that there are two subspaces of a tangent space with the property that each tangent vector has a unique decomposition as the sum of a vector in one subspace and a
Jan Naudts
doaj +1 more source
Discussion on Minimal Curvature Variation in Cubic Hermite Curve Construction
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012 In the fields of computer aided geometric design, computer graphics and so on, curvature variation minimization has been widely used for constructing curve and surface.
Peipei LI +3 more
doaj +1 more source
Complex permittivity measurements of lunar samples at microwave and millimeter wavelengths [PDF]
The relative dielectric constant and loss tangent of lunar sample 14163,164 (fine dust) were determined as a function of density at 9.375, 24, 35, and 60 GHz.
Bassett, H. L., Shackelford, R. G.
core +1 more source
Plasmonic Nanomachines: Creating Local Potential Gradients and Motions
Advanced Materials, EarlyView.Plasmonic nanomachines can generate optical, thermal, and chemical potential gradients to drive directional rectilinear, rotational, and twisting motions at the nanometer scale. The integration of multimodal plasmonic forces with functional materials and programmed structural distortions enables precise spatiotemporal actuation, thereby providing a ...
Yoonhee Kim +3 more
wiley +1 more source
Alexandria Engineering JournalIntroducing new families of statistical distributions for data modeling in the medical sector is a fascinating area of research. Numerous methods have been developed and implemented for such purposes.
Najwan Alsadat
doaj +1 more source
Higher Derivatives of the Tangent and Inverse Tangent Functions and Chebyshev Polynomials
, 2020 The higher derivatives of the tangent and hyperbolic tangent functions are determined. Formulas for the higher derivatives of the inverse tangent and inverse hyperbolic tangent functions as polynomials are stated and proved. Using another formula for the higher derivatives of the inverse tangent function from literature, two known formulas for the ...
openaire +2 more sources
Advanced Materials Interfaces, EarlyView.ABSTRACT This research focused on characterizing graphitic carbon nitride (g‐C3N4) nanocomposites incorporated with ZnO and Ag2O nanoparticles, and carrageenan to remove heavy metals. The ZnO/Ag2O@ g‐C3N4 and ZnO/Ag2O/g‐C3N4@Carr nanocomposites demonstrated thermal stability of 97.40% (108.81°C) and 82.80% (188.99°C) for TGA.
Feziwe B. Mamba +2 more
wiley +1 more source
Evolution of Materials and Device Stacks for HfO2‐Based Ferroelectric Memories
Advanced Materials Interfaces, EarlyView.This review summarizes engineering strategies for HfO2 based ferroelectric memories with focus on FeCAP and FeFET structures. It describes how dopant design, stress effects, and interface engineering improve the bulk ferroelectric response. It further discusses how channel engineering supports reliable memory characteristics and scalable integration ...
Eunjin Kim, Jiyong Woo
wiley +1 more source