1 preprint numerics no. 1/2012 norwegian university of science and technology trondheim, norway This paper discusses numerical solution of boundary value problems using spectral methods combined with nonlinear and adaptive mappings between the reference domain and the physical domain. A brief review of existing methods for adaptive mesh generation is given, and a method for finding close to opt...

Since its introduction in 1985, there has been a lot of activity in the eld of second generation still image coding. In the last years, the approach has been extended to video coding and has been the basis for European RACE research projects. The objective of this paper is to summarize the main concepts underlying second generation video coding and to present the approach taken in the RACE proj...

Digital twins, virtual representations of real-life physical objects or processes, are becoming widely used in many different industrial sectors. One the main uses digital twins is predictive maintenance, and these technologies being adapted to various new applications datatypes processes. The aim this study was propose a methodology generate synthetic vibration data using twin model maintenanc...

Abstract. To enrich urban digital twins and better understand city evolution, the integration of heterogeneous, spatio-temporal data has become a large area research in enrichment 3D 4D (3D + Time) semantic models. These models, which can represent geospatial their evolving relations, may require data-driven approaches to provide temporal concurrent views landscape. However, often requires tran...