Concept
Astronomical coordinate systems
Related publications (35)
A geometric optimal control approach for imitation and generalization of manipulation skills
Sylvain Calinon, Amirreza Razmjoo Fard, Jie Zhao
Daily manipulation tasks are characterized by regular features associated with the task structure, which can be described by multiple geometric primitives related to actions and object shapes. Only using Cartesian coordinate systems cannot fully represent ...
ELSEVIER2023Learning Linearized Degradation of Health Indicators using Deep Koopman Operator Approach
With the current trend of increasing complexity of industrial systems, the construction and monitoring of health indicators becomes even more challenging. Given that health indicators are commonly employed to predict the end of life, a crucial criterion fo ...
Research Publishing2023Gaia Focused Product Release: Spatial distribution of two diffuse interstellar bands
Stephan Morgenthaler, Shuangqing Liao
Diffuse interstellar bands (DIBs) are absorption features seen in optical and infrared spectra of stars and extragalactic objects that are probably caused by large and complex molecules in the galactic interstellar medium (ISM). Here we investigate the Gal ...
Les Ulis Cedex A2023The SparSpec algorithm and the application to the detection of spatial periodicities in tokamaks: from a 1D to a 2D analysis
A well-known, previously only 1D, algorithm using the Sparse Representation of Signals and an iterative Block Coordinate Descent method (the SparSpec-1D algorithm) has been further developed and tested in a 2D spatial domain to obtain the toroidal and polo ...
IOP Publishing Ltd2022UCLID-Net: Single View Reconstruction in Object Space
Pascal Fua, Benoît Alain René Guillard, Edoardo Remelli
Most state-of-the-art deep geometric learning single-view reconstruction approaches rely on encoder-decoder architectures that output either shape parametrizations or implicit representations. However, these representations rarely preserve the Euclidean st ...
2020Uncertainty Quantification of geochemical and mechanical compaction in layered sedimentary basins
Fabio Nobile, Lorenzo Tamellini, Anna Scotti
In this work we propose an Uncertainty Quantification methodology for sedimentary basins evolution under mechanical and geochemical compaction processes, which we model as a coupled, time-dependent, non-linear, monodimensional (depth-only) system of PDEs w ...
Elsevier2018Using a Virtual Lidar Approach to Assess the Accuracy of the Volumetric Reconstruction of a Wind Turbine Wake
Fernando Porté Agel, Fernando Carbajo Fuertes
Scanning Doppler lidars are the best tools for acquiring 3D velocity fields of full scale wind turbine wakes, whether the objective is a better understanding of some features of the wake or the validation of wake models. Since these lidars are based on the ...
2018Coordinate Descent with Bandit Sampling
Patrick Thiran, Laura Elisa Celis, Farnood Salehi
Coordinate descent methods usually minimize a cost function by updating a random decision variable (corresponding to one coordinate) at a time. Ideally, we would update the decision variable that yields the largest decrease in the cost function. However, f ...
NEURAL INFORMATION PROCESSING SYSTEMS (NIPS)2018Sampling and Exact Reconstruction of Pulses with Variable Width
Martin Vetterli, Adam James Scholefield, Loïc Arnaud Baboulaz, Gilles Baechler
Recent sampling results enable the reconstruction of signals composed of streams of fixed-shaped pulses. These results have found applications in topics as varied as channel estimation, biomedical imaging and radio astronomy. However, in many real signals, ...
Institute of Electrical and Electronics Engineers2017Scrape-off layer simulations in a Double Null magnetic configuration
Paolo Ricci, Paola Paruta, Fabio Riva, Christoph Wersal, Carrie Fiona Beadle
Different magnetic geometries are being considered for handling the power exhaust in DEMO, among which is the double-null. In addition to doubling the exhaust area, experiments have found stark differences in the SOL on the HFS and LFS in this configuratio ...
2017