Results 31 to 40 of about 929 (179)

A new smooth failure criterion for concrete inspired by Lubliner's condition

open access: yesStructural Concrete, EarlyView.
Abstract A new failure criterion with 10 parameters is proposed, based on Lubliner's idea of joining two Drucker–Prager cones. The novelty lies in the way of introducing deviatoric shape variation: through two Podgórski's functions. This feature allows for improving plane stress cross‐section's compatibility with experimental data.
Inez Kamińska, Aleksander Szwed
wiley   +1 more source

Wind-induced loads and integrity assessment of hyperboloid reflector of solar pow

open access: yesAlexandria Engineering Journal, 2016
Flow-induced loads and Strouhal frequencies of secondary hyperboloid reflector which is located at top of the central tower of a proposed solar power plant are investigated.
M. Eswaran, R.K. Verma, G.R. Reddy
doaj   +1 more source

Construction of Hyperboloidal Initial Data [PDF]

open access: yes, 2002
I describe the conformal method for constructing solutions of the hyperboloidal constraint equations as well as the conditions needed on the free data in order to have regularity up to boundary for the solutions to the constraint equations. A brief discussion of the Einstein evolution equations in the unphysical setting is given.
openaire   +2 more sources

Biodegradable Adhesive Systems for Bio‐Integrated Applications

open access: yesAdvanced Science, Volume 13, Issue 15, 13 March 2026.
Biodegradable adhesives provide temporary yet reliable adhesion while degrading into safe, non‐toxic by‐products under physiological or environmental conditions. This review summarizes recent developments in physical and chemical adhesion mechanisms—including hydrogen bonding, catechol chemistry, amine‐carboxyl coupling, and emerging diazirine and urea
Won Bae Han   +6 more
wiley   +1 more source

Efficient Robust Spontaneous Parametric Down‐Conversion via Detuning Modulated Composite Segments Designs

open access: yesLaser &Photonics Reviews, Volume 20, Issue 5, 6 March 2026.
Detuning modulated composite segmentation (DMCS) enables robust spontaneous parametric down‐conversion with sevenfold improved temperature stability compared to conventional designs, opening new possibilities for stable quantum photon sources. ABSTRACT Spontaneous parametric down conversion (SPDC) holds a pivotal role in quantum physics, facilitating ...
Muhammad Erew   +5 more
wiley   +1 more source

Quantum particle on hyperboloid [PDF]

open access: yesClassical and Quantum Gravity, 2003
7 pages, no figures ...
openaire   +3 more sources

Tunable Core–Shell Metal Alloy Pillar Design in Vertically Aligned Nanostructures Toward Multifunctionality

open access: yesSmall Science, Volume 6, Issue 3, March 2026.
Core–shell alloy‐based BaTiO3/Au–Cu–Co–Ni vertically aligned nanocomposites exhibit tunable nanopillar morphologies governed by interfacial energetics. A temperature–time–transformation diagram predicts nanopillar evolution, while structure–property relationships link morphology with controllable optical anisotropy, hyperbolic dispersion, magnetic ...
Abhijeet Choudhury   +15 more
wiley   +1 more source

Terahertz Volume Plasmon‐Polariton Modulation in All‐Dielectric Hyperbolic Metamaterials

open access: yesAdvanced Optical Materials, Volume 14, Issue 7, 16 February 2026.
THz volume plasmon‐polariton (VPP) propagation through plasmon‐based hyperbolic metamaterials, made of alternating layers of doped and undoped III‐V semiconductors. Abstract The development of plasmonics and related applications in the terahertz range faces limitations due to the intrinsic high electron density of the standard metals.
Stefano Campanaro   +3 more
wiley   +1 more source

THE PROCESSING OF HYPERBOLOID SURFACES USING WIRE ELECTRICAL DISCHARGE MACHINING – PRACTICAL ASPECTS

open access: yesNonconventional Technologies Review, 2018
The paper presents practical aspects of an original method that can be used for cutting hyperboloid surfaces using wire electrical discharge machining (WEDM). The processing method, which has only been partly revealed by the author in certain relatively
Calin Denes
doaj  

Rigidity of anti‐de Sitter (2+1)‐spacetimes with convex boundary near the Fuchsian locus

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 2, February 2026.
Abstract We prove that globally hyperbolic compact anti‐de Sitter (2+1)‐spacetimes with a strictly convex spacelike boundary that is either smooth or polyhedral and whose holonomy is close to Fuchsian are determined by the induced metric on the boundary.
Roman Prosanov, Jean‐Marc Schlenker
wiley   +1 more source

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