Results 51 to 60 of about 909 (114)

Putatively Optimal Projective Spherical Designs With Little Apparent Symmetry

open access: yesJournal of Combinatorial Designs, Volume 33, Issue 6, Page 222-234, June 2025.
ABSTRACT We give some new explicit examples of putatively optimal projective spherical designs, that is, ones for which there is numerical evidence that they are of minimal size. These form continuous families, and so have little apparent symmetry in general, which requires the introduction of new techniques for their construction.
Alex Elzenaar, Shayne Waldron
wiley   +1 more source

Equiangular tight frames and fourth root seidel matrices

open access: yesLinear Algebra and its Applications, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Duncan, David M.   +2 more
openaire   +2 more sources

Quantum measurements with prescribed symmetry

open access: yes, 2017
We introduce a method to determine whether a given generalised quantum measurement is isolated or it belongs to a family of measurements having the same prescribed symmetry.
Bruzda, W.   +2 more
core   +1 more source

Grounding Physicalism and the Metaphysical Exclusion Problem

open access: yesRatio, Volume 38, Issue 2, Page 71-81, June 2025.
ABSTRACT Ground physicalism is the view that higher‐level properties, such as phenomenal and normative properties, are fully grounded in the fundamental physical properties. Like other non‐identity physicalists, ground physicalists face the causal exclusion problem.
Will Moorfoot
wiley   +1 more source

Full Spark Frames

open access: yes, 2012
Finite frame theory has a number of real-world applications. In applications like sparse signal processing, data transmission with robustness to erasures, and reconstruction without phase, there is a pressing need for deterministic constructions of ...
Alexeev, Boris   +2 more
core   +1 more source

Fatigue Analysis and Load Spectrum Generation for Wing‐Fuselage Lug Joint With a Focus on Human Safety Transport Category Aircraft

open access: yesEngineering Reports, Volume 7, Issue 3, March 2025.
The CAD model of the lug is created in CATIA, and the corresponding FE model is obtained using Altair HyperMesh. The investigation pertains to a turboprop aircraft weighing approximately 25,000 kg and accommodating 70–90 seats, with ATR 72 and Dash Q 400 being the prominent choices in this category within India.
Rajadurai Murugesan   +5 more
wiley   +1 more source

Existence and construction of real-valued equiangular tight frames [PDF]

open access: yes
Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 24, 2010).The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the ...
Redmond, Daniel Joseph
core   +1 more source

Fully Coupled, Higher‐Order, Block‐Structured Mesh Generation in Fluid–Structure Interaction

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 97, Issue 3, Page 359-377, March 2025.
When simulating fluid–structure interaction, the update of the fluid domain typically requires frequent mesh updates. Rather than updating the mesh, we propose to generate higher‐order meshes in every time step, utilizing a block‐structure and transfinite maps.
Teresa Schwentner, Thomas‐Peter Fries
wiley   +1 more source

Aligned SICs and embedded tight frames in even dimensions

open access: yes, 2019
Alignment is a geometric relation between pairs of Weyl-Heisenberg SICs, one in dimension $d$ and another in dimension $d(d-2)$, manifesting a well-founded conjecture about a number-theoretical connection between the SICs. In this paper, we prove that if
Andersson, Ole, Dumitru, Irina
core   +1 more source

Methods of Sparse Measurement Matrix Optimization for Compressed Sensing

open access: yesIET Signal Processing, Volume 2025, Issue 1, 2025.
In compressed sensing (CS), a sparse measurement matrix with few nonzero entries is more competitive than a dense matrix in reducing the number of multiplication units. Recent studies indicate that an optimized measurement matrix having low coherence with a specified dictionary can significantly improve the reconstruction performance.
Renjie Yi   +5 more
wiley   +1 more source

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