Results 61 to 70 of about 274,938 (293)

On the local stability of semidefinite relaxations

open access: yes, 2020
We consider a parametric family of quadratically constrained quadratic programs (QCQP) and their associated semidefinite programming (SDP) relaxations. Given a nominal value of the parameter at which the SDP relaxation is exact, we study conditions (and ...
Agarwal, Sameer   +3 more
core   +1 more source

BICEP3: a 95 GHz refracting telescope for degree-scale CMB polarization [PDF]

open access: yes, 2014
BICEP3 is a 550 mm-aperture refracting telescope for polarimetry of radiation in the cosmic microwave background at 95 GHz. It adopts the methodology of BICEP1, BICEP2 and the Keck Array experiments - it possesses sufficient resolution to search for ...
Ahmed, Z.   +31 more
core   +1 more source

Imaging of Biphoton States: Fundamentals and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Alternate Samplingmethods for Estimating Multivariate Normal Probabilities [PDF]

open access: yes, 2003
We study the performance of alternative sampling methods for estimating multivariate normal probabilities through the GHK simulator. The sampling methods are randomized versions of some quasi-Monte Carlo samples (Halton, Niederreiter, Niederreiter-Xing ...
András, P., Sándor, Z. (Zsolt)
core   +5 more sources

Construction of Column-Orthogonal Designs with Two-Dimensional Stratifications

open access: yesMathematics, 2023
For the design of computer experiments, column orthogonality and space-filling are two desirable properties. In this paper, we develop methods for constructing a new class of column-orthogonal designs (ODs) with two-dimensional stratifications on finer ...
Song-Nan Liu, Min-Qian Liu, Jin-Yu Yang
doaj   +1 more source

Deciphering Small Molecule Diffusion Parameters Across Light Responsive Polymersome Membranes

open access: yesAdvanced Functional Materials, EarlyView.
Light‐responsive polymersomes bearing donor–acceptor Stenhouse adducts (DASAs) enable programmable control over small‐molecule transport across synthetic membranes. By systematically varying DASA density, an optimal functionalization regime is identified that maximizes light‐gated permeability.
Farzina Matubbar   +7 more
wiley   +1 more source

Rib Thickness Optimization of Vibration Test Fixture Based on Orthogonal Array for Weight Reduction

open access: yesMathematics
Vibration test fixtures are widely used to evaluate the dynamic characteristics of structures. However, their performance is often limited by their excessive weight and unintended resonances. Conventional optimization methods, such as genetic algorithms,
Su Min Kim, Jung Jin Kim
doaj   +1 more source

Dual‐band orthogonal polarised shared aperture array with shared‐elements

open access: yesElectronics Letters, 2021
In this paper, an orthogonal polarised dielectric resonator antenna (DRA) which can operate at S‐ and C‐band, has been designed as “shared‐element” for forming a dual‐band shared aperture array.
Jiachen Xu, Chenjiang Guo, Jun Ding
doaj   +1 more source

Parametric resonances in electrostatically interacting carbon nanotube arrays [PDF]

open access: yes, 2008
We study, numerically and analytically, a model of a one-dimensional array of carbon nanotube resonators in a two-terminal configuration. The system is brought into resonance upon application of an AC-signal superimposed on a DC-bias voltage.
A. H. Nayfeh   +6 more
core   +2 more sources

Orthogonal Trades and the Intersection Problem for Orthogonal Arrays

open access: yesGraphs and Combinatorics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Demirkale, Fatih   +3 more
openaire   +5 more sources

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