Results 171 to 180 of about 10,141 (199)
Some of the next articles are maybe not open access.
2010
SETI-Italia is an observing program led by the INAF-IRA (Istituto Nazionale di Astrofisica - Istituto di Radioastronomia). At present, Italy is the only European country conducting a SETI (Search for Extraterrestrial Intelligence) program. Occasional SETI searches may be conducted at the Nanacy French Kraus type radiotelescope and some artificial ...
openaire +1 more source
SETI-Italia is an observing program led by the INAF-IRA (Istituto Nazionale di Astrofisica - Istituto di Radioastronomia). At present, Italy is the only European country conducting a SETI (Search for Extraterrestrial Intelligence) program. Occasional SETI searches may be conducted at the Nanacy French Kraus type radiotelescope and some artificial ...
openaire +1 more source
2021
In 1960, the astronomer Frank Drake listened to the stars Tau Ceti and Epsilon Eridani, searching for extra terrestrial intelligent signals: the so called “Ozma project” was the first experimental SETI attempt. Since then, SETI has been mainly radio, although optical SETI and the technosignature search are becoming more and more of interest.
Nicolò Antonietti, Pierpaolo Pari
openaire +1 more source
In 1960, the astronomer Frank Drake listened to the stars Tau Ceti and Epsilon Eridani, searching for extra terrestrial intelligent signals: the so called “Ozma project” was the first experimental SETI attempt. Since then, SETI has been mainly radio, although optical SETI and the technosignature search are becoming more and more of interest.
Nicolò Antonietti, Pierpaolo Pari
openaire +1 more source
Maccone first KLT theorem: KLT of all timerescaled Brownian motions
2012In Section 21.4 the problem of finding the KL expansion of standard Brownian motion was solved completely. That was possible because the differential equation for the eigenfunctions was just a simple harmonic oscillator equation, whose solution is trivial.
openaire +1 more source
On the relationships between SVD, KLT and PCA
Pattern Recognition, 1981Abstract In recent literature on digital image processing much attention is devoted to the singular value decomposition (SVD) of a matrix. Many authors refer to the Karhunen-Loeve transform (KLT) and principal components analysis (PCA) while treating the SVD.
openaire +2 more sources
Block-based KLT compression for multispectral images
International Journal of Wavelets, Multiresolution and Information Processing, 2016An efficient lossy compression algorithm for multispectral images based on block Karhunen–Loève transform (KLT) is proposed. First, a two-dimensional discrete wavelet transform is performed on each band of multispectral images to remove the spatial correlation.
Yongjian Nian +4 more
openaire +1 more source
Variétés klt projectivement plates
2021In the context of uniformisation problems, we study projective varieties with klt singularities whose cotangent sheaf admits a projectively flat structure over the smooth locus. Generalising work of Jahnke-Radloff, we show that torus quotients are the only klt varieties with semistable cotangent sheaf and extremal Chern classes. An analogous result for
Greb, Daniel +2 more
openaire +1 more source
Maccone second KLT theorem: KLT of all time-rescaled square Brownian motions
2012A surprising feature of the KL expansion obtained in Chapter 22 is that the same analytical solution valid for the X(t) process can be carried over to the X2(t) process. In other words, to keep within the easy framework of standard Brownian motion B(t), if we know the KL expansion of B(t), then we may also find the KL expansion of B2(t).
openaire +1 more source
A Matlab code for KLT simulations
2012After so much mathematics, it is natural to think of some computer code capable of simulating the KLTs derived analytically in this book. The well-known Matlab environment is well-suited for such simulations inasmuch as it can handle both the eigenvalues and the eigenvectors of symmetric matrices that are at the heart of the KLT.
openaire +1 more source
Data-independent low-complexity KLT approximations for image and video coding
Signal Processing: Image Communication, 2022Thiago da Silveira +2 more
exaly
Low-complexity rounded KLT approximation for image compression
Journal of Real-Time Image Processing, 2021Fabio M. Bayer +2 more
exaly

