Results 61 to 70 of about 751,749 (193)
Interpolation-Based Direction-of-Arrival Estimation for Coprime Arrays via Covariance Matrix Fitting
IEEE Access, 2020 Coprime arrays can highly increase degree-of-freedom (DOF) by exploiting the equivalent virtual signal. However, since the corresponding virtual array constructed by the coprime array is always a non-uniform linear array (non-ULA), most existing ...
Zhen Chen, Chongyi Fan, Xiaotao Huang
doaj +1 more source
Parametric Time‐Variation in the Unconditional Volatility: Estimation and Inference
Journal of Time Series Analysis, EarlyView.ABSTRACT We propose modeling time‐variation in the unconditional volatility by augmenting the standard GARCH model by a deterministic time‐varying intercept. The model, called the additive time‐varying (ATV‐)GARCH model, can be interpreted as a reduced form of a model including covariates and can be derived from a multiplicative decomposition of ...
Niklas Ahlgren +2 more
wiley +1 more source
Complementary legs and symplectic rational balls
Journal of the London Mathematical Society, Volume 114, Issue 4, October 2026.Abstract We show that a small Seifert fibered space with complementary legs does not symplectically bound a rational homology ball for at least one choice of orientation. In the case e0⩽−1$e_0\leqslant -1$, we characterize when a small Seifert fibered space with uniquely complementary legs symplectically bounds a rational homology ball.
John B. Etnyre +2 more
wiley +1 more source
Coprime Factor Reduction of H-infinity Controllers [PDF]
, 2003 We consider the efficient solution of the coprime factorization based H infinity controller approximation problems by using frequency-weighted balancing related model reduction approaches.
Varga, Andras
core
Near-Field Localization With Coprime Array
Proceedings of the 30th Annual International Conference on Mobile Computing and NetworkingLarge-aperture coprime arrays (CAs) are expected to achieve higher sensing resolution than conventional dense arrays (DAs), yet with lower hardware and energy cost. However, existing CA far-field localization methods cannot be directly applied to near-field scenarios due to channel model mismatch.
Hongqiang Cheng +2 more
openaire +3 more sources
Low-Complexity Propagator Based Two Dimensional Angle Estimation for Coprime MIMO Radar
IEEE Access, 2018 The problem of 2-D angle estimation for coprime multiple-input multiple-output (MIMO) radar is considered, and a low-complexity propagator based method is proposed.
Jianfeng Li, Defu Jiang
doaj +1 more source
On the detection of knots by their traces in high dimensions
Proceedings of the London Mathematical Society, Volume 133, Issue 4, October 2026.Abstract For every n⩾4$n\geqslant 4$, we demonstrate the existence of non‐isotopic, smooth (n−2)$(n-2)$‐knots in Sn$S^n$ with diffeomorphic traces. We give two proofs: the first by generalising the RBG link construction to all dimensions, and the second as an application of work of Plotnick.
Valentina Bais +10 more
wiley +1 more source
On frequency-weighted coprime factorization based controller reduction [PDF]
, 2003 We consider the efficient solution of a class of coprime factorization based controller approximation problems by using frequency-weighted balancing related model reduction approaches.
Varga, Andras
core
Underdetermined Direction-of-Arrival Estimation with Coprime Array via Atomic Norm Minimization [PDF]
Radioengineering, 2020 The coprime array provides the possibility of resolving more signals than the sensors for the direction-of-arrival (DOA) estimation application. However, the non-consecution of its virtual array raises challenges for making full use of the degree of ...
Y. Pan +4 more
doaj
Legume Science, Volume 8, Issue 3, September 2026.ABSTRACT Cold plasma (CP), a nonthermal ionised gas rich in reactive oxygen and nitrogen species (RONS), has emerged as a sustainable technology for enhancing legume production and quality. This review summarises current advances in CP applications in legumes, focusing on seed germination, seedling vigour, nutrient enhancement, antinutrient reduction ...
Jannatul Ferdous +5 more
wiley +1 more source