Results 21 to 30 of about 1,051,339 (291)

Spectral features of solar wind turbulent plasma [PDF]

, 2009
Spectral properties of a fully compressible solar wind Hall Magnetohydrodynamic plasma are investigated by means of time dependent three dimensional Hall MHD simulations.
Alexandrova, Alexandrova, Bale, Beinroth, Biskamp, Biskamp, Boldyrev, Brodin, Carter, Cho, Dastgeer, Dastgeer, Dastgeer Shaikh, Denskat, Egedal, G. P. Zank, Galtier, Galtier, Galtier, Gary, Ghosh, Ghosh, Goldstein, Goldstein, Gottlieb, Hasegawa, Howes, Hsu, Iroshnikov, Kingsep, Kolmogorov, Kraichnan, Krishan, Leamon, Matthaeus, Matthaeus, Ono, Phan, Podesta, Sahraoui, Sahraoui, Saito, Servidio, Shaikh, Shaikh, Shaikh, Shaikh, Shaikh, Shaikh, Shaikh, Shaikh, Shebalin, Smith, Stawicki, Tu, Wu, Yokoi, Yokoi, Zank, Zank   +59 more
core   +2 more sources

Spectral features: how to reduce them [PDF]

SPIE Proceedings, 2009
Spectral features are introduced by the diffuser that is used during on-board sun calibration. New findings are presented on how to reduce the size of these spectral features. Reduction can be obtained via optical design of the calibration unit, but also in creating a better diffuser.
Brug, H. van, Bloemendal, D. ten, Goeij, B. de, Vink, R., Maresi, L.   +4 more
openaire   +1 more source

Termination shock particle spectral features [PDF]

, 2006
Spectral features of energetic H ions accelerated at the termination shock may be evidence of two components. At low energies the energy spectrum is ~E^(–1.55), with break at ~0.4 MeV to E^(–2.2).
Cummings, A. C., Heikkila, B. C., Lal, N., McDonald, F. B., Stone, E. C., Webber, W. R.   +5 more
core   +1 more source

Spectral Embedding of Feature Hypergraphs [PDF]

, 2008
In this paper we investigate how to establish a hypergraph model for characterizing object structures and how to embed this model into a low-dimensional pattern space. Each hyperedge of the hypergraph model is derived from a seed feature point of the object and embodies those neighbouring feature points that satisfy a similarity constraint. We show how
Peng Ren 0001, Richard C. Wilson 0001, Edwin R. Hancock   +2 more
openaire   +1 more source

BATSE evidence for GRB spectral features [PDF]

Fourth Huntsville gamma-ray burst symposium, 1998
We have developed an automatic search procedure to identify low-energy spectral features in GRBs. We have searched 133,000 spectra from 117 bright bursts and have identified 12 candidate features with significances ranging from our threshold of P = 5E-5 to P = 1E-7.
Briggs, M. S., Band, D. L., Preece, R. D., Pendleton, G. N., Paciesas, W. S., Matteson, J. L.   +5 more
openaire   +2 more sources

Cotton Cultivated Area Extraction Based on Multi-Feature Combination and CSSDI under Spatial Constraint

Remote Sensing, 2022
Cotton is an important economic crop, but large-scale field extraction and estimation can be difficult, particularly in areas where cotton fields are small and discretely distributed.
Yong Hong, Deren Li, Mi Wang, Haonan Jiang, Lengkun Luo, Yanping Wu, Chen Liu, Tianjin Xie, Qing Zhang, Zahid Jahangir   +9 more
doaj   +1 more source

A Novel Heterogeneous Parallel Convolution Bi-LSTM for Speech Emotion Recognition

Applied Sciences, 2021
Speech emotion recognition is a substantial component of natural language processing (NLP). It has strict requirements for the effectiveness of feature extraction and that of the acoustic model.
Huiyun Zhang, Heming Huang, Henry Han
doaj   +1 more source

Excitonic spectral features in strongly-coupled organic polaritons [PDF]

, 2015
Starting from a microscopic model, we investigate the optical spectra of molecules in strongly-coupled organic microcavities examining how they might self-consistently adapt their coupling to light.
Cwik, Justyna A., De Liberato, Simone, Keeling, Jonathan, Kirton, Peter   +3 more
core   +2 more sources

Compressive spectral feature sensing

IET Image Processing, 2019
To reduce the size of spectral data, compressive sensing imaging systems are developed to sample fewer measurements than the Nyquist‐rate ones, from which the original data can be recovered by the optimisation model and algorithm. However, this is not a cheap option for the case where the real‐time acquisition of spectral information is required.
Zelong Wang, Jubo Zhu
openaire   +1 more source

2-([1,2,4]triazolo[1,5-c]quinazoline-2-yl-)alkyl-(alkaryl-,aryl-)-amines and their derivatives. Message 2. The synthesis of (3Н-quinazoline-4-ylidene)hydrazides N-protected aminoacids, using a variety of amine-protecting approaches. Physical-chemical prop

Zaporožskij Medicinskij Žurnal, 2018
The synthetic potential of (3H-quinazoline-4-ylidene)hydrazides of carboxylic acids is significant in the context of new s-triazoloquinazolines creation and the obtained data of biological activity is a valid reason for the development of new methods of ...
Yu. V. Martynenko, M. S. Kazunin, I. S. Nosulenko, G. G. Berest, S. І. Kоvalenko, O. M. Kamyshnyi, N. M. Polishchuk   +6 more
doaj   +1 more source