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Neighbour species richness and local structural variability modulate aboveground allocation patterns and crown morphology of individual trees
(2019)
- article
Local neighbourhood interactions are considered a main driver for biodiversity–productivity relationships in forests. Yet, the structural responses of individual trees in species mixtures and their relation to crown ...
On local triangle algebras
(2021)
- article
In this paper, we have introduced the notion of local and semilocal triangle algebras and propose the theorems that characterize these algebraic structures. Additionally, we have established the new properties of these ...
Investigating Root Causes of Railway Track Geometry Deterioration – A Data Mining Approach
(2020)
- article
Railway track geometry deterioration indicates degradation in the underlying track structures. Monitoring and predicting this behavior are important as is investigating the root causes contributing to the deterioration. ...
Learning mathematics by project work in secondary school
(2020)
- article
In project-based learning, pupils have two central learning objectives: to understand the content of the subject and to develop their twenty-first-century skills. This article concerns the use of project work in mathematics ...
Asymptotics and approximation of large systems of ordinary differential equations
(2020)
- article
In this paper we continue our earlier investigations into the asymptotic behaviour of infinite systems of coupled differential equations. Under the mild assumption that the so-called characteristic function of our system ...
Curvatures, graph products and Ricci flatness
(2021-03)
- article
In this paper, we compare Ollivier Ricci curvature and Bakry-\'Emery curvature notions on combinatorial graphs and discuss connections to various types of Ricci flatness. We show that non-negativity of Ollivier Ricci ...
Complex-domain Joint Broadband Hyperspectral Image Denoising
(2019-05-01)
- article
In this paper, we propose a novel complex domain denoising algorithm for hyperspectral data. The algorithm is based on the Complex Domain Block-Matching 3D (CDBM3D) filter and on similarity of hyperspectral data, which are ...
A category theoretical interpretation of discretization in Galerkin finite element method
(2020)
- article
The Galerkin finite element method (FEM) is used widely in finding approximative solutions to field problems in engineering and natural sciences. When utilizing FEM, the field problem is said to be discretized. In this ...
On Computational Complexity Reduction Methods for Kalman Filter Extensions
(2019-10-07)
- article
The Kalman filter and its extensions are used in a vast number of aerospace and navigation applications for nonlinear state estimation of time series. In the literature, different approaches have been proposed to exploit ...