Results 31 to 40 of about 318,704 (275)

MPC-based control strategy of PV grid connected inverter for damping power oscillations

open access: yesFrontiers in Energy Research, 2022
With global warming and the depletion of fossil energy, the development of photovoltaic (PV) energy has attracted attention in many countries. However, when large-scale PV power stations are connected to the power grid through inverters, the inertia and ...
Xichang Wen   +4 more
doaj   +1 more source

Discrete Global Grid Systems nuovo sistema di riferimento mondiale adottato da Open Geospatial Consortium

open access: yesGEOmedia, 2018
The Open Geospatial Consortium (OGC) announced the adoption of the new Discrete Global Grid System (DGGS) standard, which aimed to report geospatial information on earth, in a different way.
Renzo Carlucci
doaj   +3 more sources

A Game-theoretic Formulation of the Homogeneous Self-Reconfiguration Problem [PDF]

open access: yes, 2015
In this paper we formulate the homogeneous two- and three-dimensional self-reconfiguration problem over discrete grids as a constrained potential game. We develop a game-theoretic learning algorithm based on the Metropolis-Hastings algorithm that solves ...
Egerstedt, Magnus B.   +3 more
core   +2 more sources

Scaling Dynamics of Domain Walls in the Cubic Anisotropy Model [PDF]

open access: yes, 2006
We have investigated the dynamics of domain walls in the cubic anisotropy model. In this model a global O(N) symmetry is broken to a set of discrete vacua either on the faces, or vertices of a (hyper)cube.
A. Vilenkin   +3 more
core   +2 more sources

Duality and Dimensionality Reduction Discrete Line Generation Algorithm for a Triangular Grid

open access: yesISPRS International Journal of Geo-Information, 2018
Vectors are a key type of geospatial data, and their discretization, which involves solving the problem of generating a discrete line, is particularly important. In this study, we propose a method for constructing a discrete line mathematical model for a
Lingyu Du   +4 more
doaj   +1 more source

Fourier domain preconditioned conjugate gradient algorithm for atmospheric tomography [PDF]

open access: yes, 2006
By 'atmospheric tomography' we mean the estimation of a layered atmospheric turbulence profile from measurements of the pupil-plane phase (or phase gradients) corresponding to several different guide star directions.
Ellerbroek, Brent L.   +2 more
core   +1 more source

On the isolatitude property of the rHEALPix Discrete Global Grid System

open access: yesBig Earth Data, 2019
Digital Earth frameworks provide a way to integrate, analyze, and visualize large volumes of geospatial data, and the foundation of such frameworks is the Discrete Global Grid System (DGGS).
David Bowater, Emmanuel Stefanakis
doaj   +1 more source

Discretization of the 3D Monge-Ampere operator, between Wide Stencils and Power Diagrams [PDF]

open access: yes, 2015
We introduce a monotone (degenerate elliptic) discretization of the Monge-Ampere operator, on domains discretized on cartesian grids. The scheme is consistent provided the solution hessian condition number is uniformly bounded.
Mirebeau, Jean-Marie
core   +3 more sources

Symmetry Reduction Enables Model Checking of More Complex Emergent Behaviours of Swarm Navigation Algorithms

open access: yes, 2015
The emergent global behaviours of robotic swarms are important to achieve their navigation task goals. These emergent behaviours can be verified to assess their correctness, through techniques like model checking. Model checking exhaustively explores all
Antuña, Laura   +3 more
core   +1 more source

The extended-Octree Spheroid Subdivision and Coding Model [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Discrete Global Grid has been widely used as the basic data model of digital earth. But it is only confined to the earth surface, and it can not reach to the earth inside or outside.
X. F. Cao, G. Wan, F. Li, K. Li
doaj   +1 more source

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