Results 21 to 30 of about 2,592,313 (266)

Small-scale instabilities in dynamical systems with sliding [PDF]

open access: yes, 2010
NOTICE: this is the author’s version of a work that was accepted for publication in Physica D: Nonlinear Phenomena . Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality ...
Kowalczyk, P.   +3 more
core   +1 more source

On solving periodic Riccati equations [PDF]

open access: yes, 2008
Numerically reliable algorithms to compute the periodic non-negative definite stabilizing solutions of the periodic differential Riccati equation (PRDE) and discrete-time periodic Riccati equation (DPRE) are proposed. For the numerical solution of PRDEs,
A. Varga, Varga, Andreas
core   +1 more source

Volume production in different silvicultural systems for 85 years in a mixed Picea abies–Pinus sylvestris forest in central Sweden

open access: yesSilva Fennica, 2013
A long-term comparison of different silvicultural systems was established in 1923 in central Sweden, in an uneven-aged mixed Norway spruce–Scots pine forest ( (L.) Karst. – L.) with about 85% spruce and 15% pine. The five treatments consisted of two
Lars Lundqvist   +2 more
doaj   +1 more source

Locally periodic unfolding method and two-scale convergence on surfaces of locally periodic microstructures [PDF]

open access: yes, 2015
In this paper we generalize the periodic unfolding method and the notion of two-scale convergence on surfaces of periodic microstructures to locally-periodic situations.
Ptashnyk, Mariya   +2 more
core   +1 more source

On solving discrete-time periodic Riccati equations [PDF]

open access: yes, 2005
Two numerically reliable algorithms to compute the periodic nonnegative definite stabilizing solution ofdiscrete-time periodic Riccati equations are proposed.
A. Varga, Varga, Andras
core   +1 more source

Influence of thinning intensity and canopy type on Scots pine stand and growth dynamics in a mixed managed forest

open access: yesForest Systems, 2016
Aim of the study: We analysed the effects of thinning intensity and canopy type on Scots pine growth and stand dynamics in a mixed Scots pine-beech forest. Area of the study: Western Pyrenees.
Irantzu Primicia   +5 more
doaj   +1 more source

Computation of Kalman Decompositions of Periodic Systems [PDF]

open access: yes, 2003
We consider the numerically reliable computation of reachability and observability Kalman decompositions of a periodic system with time-varying dimensions.
A. Varga   +3 more
core   +1 more source

CARBON STOCK GROWTH IN A SECONDARY ATLANTIC FOREST [PDF]

open access: yesRevista Árvore, 2019
The secondary Atlantic forests play an important role in the context of climate change, acting as a carbon sink for the atmosphere. However, these forests can become a carbon source in case of increased tree mortality.
Paulo Henrique Villanova   +6 more
doaj   +1 more source

CLASSIFICATION AND GROWTH OF VEGETATION UNITS IN MIXED RAINY FOREST, SÃO FRANCISCO DE PAULA, RS

open access: yesCiência Florestal, 2009
This work was developed with the objective of studying the present ecological groups in the Mixed Rainy Forest and of describing the composition and the growth dynamics during the four seasons.
Juliana Fernandes Gomes   +3 more
doaj   +1 more source

Impact of regional climatic conditions on tree growth on mainland Greece

open access: yesFolia Oecologica, 2019
Forest growth is commonly used to explore tree vitality and ability to resist to environmental changes or climatic fluctuations. This paper illustrates and examines how regional climatic conditions can be related to the decline of tree growth, which were
Koulelis Panagiotis P.   +2 more
doaj   +1 more source

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