Results 1 to 10 of about 1,786 (118)

Dual generalized B-spline functions and their applications in several approximation problems

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
A new construction method of dual generalized B-spline functions is presented in this paper. Due to the importance of generalized B-splines, several interesting applications of these dual functions in Computer Aided Manufacturing are also given.
Li ZHANG   +3 more
doaj   +3 more sources

The fundamental group of the space $\Omega_n(m)$

open access: yesResearches in Mathematics, 2022
In the present paper the spaces $\Omega_n(m)$ are considered. The spaces $\Omega_n(m)$, introduced in 2018 by A.M. Pasko and Y.O. Orekhova, are the generalization of the spaces $\Omega_n$ (the space $\Omega_n(2)$ coincides with $\Omega_n$).
A.M. Pasko
doaj   +1 more source

Capturing Heterogeneous Time-Variation in Covariate Effects in Non-Proportional Hazard Regression Models. [PDF]

open access: yesBiom J
ABSTRACT A central focus in survival analysis is examining how covariates affect survival time. These covariate effects are often found to be either time‐varying, heterogeneous—such as being specific to patients, treatments, or subgroups—or exhibit both characteristics simultaneously. While the standard model, the Cox proportional hazards model, allows
Hagemann N, Kneib T, Möllenhoff K.
europepmc   +2 more sources

The Betti numbers of the space $\mathbb{C}\Omega_3$

open access: yesResearches in Mathematics, 2020
The space $\mathbb{C}\Omega_3$ is considered. The Betti numbers of the space $\mathbb{C}\Omega_3$ are calculated.
A.M. Pasko
doaj   +1 more source

The homology groups of the space $\Omega_n(m)$

open access: yesResearches in Mathematics, 2019
The spaces $\Omega_n(m)$ that generalize the spaces $\Omega_n$ are introduced. In order to investigate the homotopy invariants of the space $\Omega_n(m)$ the CW-structure of the space $\Omega_n(m)$ is built.
A.M. Pasko
doaj   +1 more source

Design method of nonsubsampled graph filter banks

open access: yesDianzi Jishu Yingyong, 2019
In order to overcome the problem that it is difficult to accurately define the downsampling operation for a generalized graph signal in graph filter banks, this paper focuses on the design algorithm of nonsubsampled graph filter banks.
Yang Sheng
doaj   +1 more source

The homology groups of the Cartesian product $\Omega_{n_1}(m_1)\times \Omega_{n_2}(m_2)$

open access: yesResearches in Mathematics
The paper continues the investigation of the spaces of complex-valued perfect splines $\Omega_n(m)$. These spaces were introduced as generalization of the spaces $\Omega_n$, the topology of which has been studied by V.I. Ruban, V.A. Koshcheev, A.M. Pasko.
A.M. Pasko
doaj   +1 more source

The homotopy groups $\pi_k(\Omega_n(m))$, $k=1,...,n$

open access: yesResearches in Mathematics
The paper continues the investigation of the spaces of complex-valued perfect splines $\Omega_n(m)$. These spaces were introduced as generalization of the spaces $\Omega_n$, the topology of which has been studied by V.I. Ruban, V.A. Koshcheev, A.M. Pasko.
A.M. Pasko
doaj   +1 more source

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