Results 231 to 240 of about 21,114 (257)

The roaming atom pathway in formaldehyde decomposition

The Journal of Chemical Physics, 2006
We present a detailed experimental and theoretical investigation of formaldehyde photodissociation to H2 and CO following excitation to the 2141 and 2143 transitions in S1. The CO velocity distributions were obtained using dc slice imaging of single CO rotational states (v=0, jCO=5–45).
Sridhar A, Lahankar, Steven D, Chambreau, Dave, Townsend, Frank, Suits, John, Farnum, Xiubin, Zhang, Joel M, Bowman, Arthur G, Suits   +7 more
openaire   +2 more sources

Atomic decomposition with evolutionary pursuit

Digital Signal Processing, 2003
Abstract An atomic decomposition of a signal is an expression of the signal as a superposition of a parametric collection of waveforms. Basis expansions, especially orthogonal cases such as Fourier and wavelet bases, are the most commonly used atomic models.
openaire   +1 more source

Atomic decomposition-based SAR imaging technique

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
The conventional SAR imaging algorithms are developed based on specified imaging geometry models, and these algorithms become more complex considering finer resolution or more complicated geometry. The quality of the product is measured by resolution, PSLR and ISLR, etc. without regard to its application.
Yesheng Gao, Kaizhi Wang, Xingzhao Liu, Wenxian Yu   +3 more
openaire   +1 more source

Face detection by optimal atomic decomposition

SPIE Proceedings, 2005
Atomic decompositions are lower-cost alternatives to the principal component analysis (PCA) in tasks where sparse signal representation is required. In pattern classifications tasks, e.g. face detection, a careful selection of atoms is needed in order to ensure an optimal and fast-operating decomposition to be used in the feature extraction stage.
Vladislav Uzunov, Atanas Gotchev, Karen Egiazarian, Jaakko Astola   +3 more
openaire   +1 more source

Atomic decomposition from S-functions

2001
In this section we prove the following: Theorem 5.1. Let $$ \left\{ {\varphi _1 ,\varphi _2 , \cdots ,\varphi _J } \right\} \subset S $$ (5.1) and $$ \sup \left\{ {\sum\limits_{i = 1}^J {\left| {F\varphi _i \left( {t\xi } \right)} \right|} :t > 0} \right\} > 0{\rm{ }}for{\rm{ }}any{\rm{ }}\xi \in {\rm{R}}^n \backslash \left\{ 0 \right\}. $$
openaire   +1 more source

Unknown signal detection via atomic decomposition

Proceedings of the 11th IEEE Signal Processing Workshop on Statistical Signal Processing (Cat. No.01TH8563), 2002
A detector using atomic decomposition with a chirplet dictionary is analyzed. It is derived from the generalized likelihood ratio test and has constant false alarm rate. The atomic decomposition is performed via a genetic algorithm and compared with previous approaches.
G. Lopez-Risueno, J. Grajal
openaire   +1 more source

The atomic decomposition

1989
Jan-Olov Strömberg, Alberto Torchinsky
openaire   +1 more source

Function spaces of Lorentz-Sobolev type: Atomic decompositions, characterizations in terms of wavelets, interpolation and multiplications

Journal of Functional Analysis, 2022
Fernando Cobos
exaly  

Atomic decompositions and Hardy’s inequality on weak Hardy-Morrey spaces

Science China Mathematics, 2017
Kwok-Pun Ho
exaly  

Banach spaces related to integrable group representations and their atomic decompositions, I

Journal of Functional Analysis, 1989
Hans G Feichtinger
exaly