Results 51 to 60 of about 6,501 (223)

Error Estimates for the Nearly Singular Momentum-Space Bound-State Equations

open access: yesAdvances in Mathematical Physics, 2020
We present errors of quadrature rules for the nearly singular integrals in the momentum-space bound-state equations and give the critical value of the nearly singular parameter.
Yang-Hong Zhang, Jiao-Kai Chen
doaj   +1 more source

DQN‐Guided Subset‐Induced OCSVM Kernel Approximation for Imbalanced Anomaly Detection

open access: yesIEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
Anomaly detection under limited normal data remains a fundamental challenge due to severe class imbalance and scarcity of anomalies. We propose a novel framework that reformulates support vector selection in One‐Class SVM as a sequential decision‐making problem.
Wenqian Yu, Jiaying Wu, Jinglu Hu
wiley   +1 more source

Solving boundary value problems via the Nyström method using spline Gauss rules [PDF]

open access: yes, 2023
We propose to use spline Gauss quadrature rules for solving boundary value problems (BVPs) using the Nyström method. When solving BVPs, one converts the corresponding partial differential equation inside a domain into the Fredholm integral equation of ...
Barrera, D.   +14 more
core   +1 more source

Nyström-Based 2D DOA Estimation for URA: Bridging Performance–Complexity Trade-Offs

open access: yesMathematics
To address the computational efficiency challenges in two-dimensional (2D) direction-of-arrival (DOA) estimation, a two-stage framework integrating the Nyström approximation with subspace decomposition techniques is proposed in this paper.
Liping Yuan, Ke Wang, Fengkai Luan
doaj   +1 more source

Investigating SME‐Inclusive Public‐Private AI Innovation Network: Evidence From U.S. Small Business Administration (1991–2023)

open access: yesThunderbird International Business Review, EarlyView.
ABSTRACT Understanding innovation policy is pivotal to enhancing national competitiveness for global value chain. This research investigates an SME‐Inclusive public‐private AI innovation network over time in the U.S. context (1991–2023), revealing how a government's demand‐based innovation policy bolsters technological prowess through isomorphism and ...
Jiyoon An
wiley   +1 more source

The Nyström Kernel Conjugate Gradient Algorithm Based on $k$ -Means Sampling

open access: yesIEEE Access, 2020
The kernel conjugate gradient (KCG) algorithms have been proposed to improve the convergence rate and the filtering accuracy of kernel adaptive filters (KAFs) efficiently.
Fuliang He, Kui Xiong, Shiyuan Wang
doaj   +1 more source

Solving SIVPs of Lane–Emden–Fowler Type Using a Pair of Optimized Nyström Methods with a Variable Step Size

open access: yesMathematics, 2023
This research article introduces an efficient method for integrating Lane–Emden–Fowler equations of second-order singular initial value problems (SIVPs) using a pair of hybrid block methods with a variable step-size mode.
Mufutau Ajani Rufai, Higinio Ramos
doaj   +1 more source

Ungulate substrate use in fauna passages

open access: yesWildlife Biology, EarlyView.
Fauna passages are increasingly constructed at major roads and railways to mitigate the negative effects of infrastructure and traffic on wildlife. The function of such passages depends on design, including the construction materials, soil, and vegetation.
Milla Niemi, Jan Olof Helldin
wiley   +1 more source

What makes a microsaccade? A review of 70 years research prompts a new detection method

open access: yesJournal of Eye Movement Research, 2020
We have developed a new method for detecting microsaccades in eye-movement data. The impetus was the review of the literature on microsaccades presented in this paper, which revealed (1) large changes in the size and speed of reported microsaccades over ...
Anna-Katharina Hauperich   +2 more
doaj   +1 more source

Habitat selection of moose in Sweden in managed boreal forests with Pinus contorta and P. sylvestris

open access: yesWildlife Biology, EarlyView.
Human land use can take advantage of using exotic species to increase financial benefits. However, the use of exotic tree species might affect ecosystem functioning, potentially including the habitat use and movement behaviour of animals, modifying their ecological impact, and interactions with human land use.
Maria Bolund   +5 more
wiley   +1 more source

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