Results 71 to 80 of about 7,962,398 (254)

Wavelet analysis and scaling properties of time series

, 2005
We propose a wavelet based method for the characterization of the scaling behavior of non-stationary time series. It makes use of the built-in ability of the wavelets for capturing the trends in a data set, in variable window sizes.
Manimaran, P., Panigrahi, Prasanta K., Parikh, Jitendra C.   +2 more
core   +1 more source

Feasibility of a ctDNA multigenic panel for non‐small‐cell lung cancer early detection and disease surveillance

Molecular Oncology, EarlyView.
Plasma‐based detection of actionable mutations is a promising approach in lung cancer management. Analysis of ctDNA with a multigene NGS panel identified TP53, KRAS, and EGFR as the most frequently altered, with TP53 and KRAS in treatment‐naïve patients and TP53 and EGFR in previously treated patients.
Giovanna Maria Stanfoca Casagrande, Marcela de Oliveira Silva, Mariana Bisarro dos Reis, Rodrigo de Oliveira Cavagna, Luciane Sussuchi, Icaro Alves Pinto, Natalia Zampieri Pontes, Rodrigo Sampaio Chiarantano, Flavio Augusto Ferreira da Silva, Pedro de Marchi, Letícia Ferro Leal, Rui M. Reis   +11 more
wiley   +1 more source

Complexity Analysis of Environmental Time Series

Entropy
Small, forested catchments are prototypes of terrestrial ecosystems and have been studied in several disciplines of environmental science over several decades.
Holger Lange, Michael Hauhs
doaj   +1 more source

Univariant time series analysis applied to ozone forecasting in the city of Cali, Colombia

Revista Facultad de Ingeniería Universidad de Antioquia, 2014
The modelling results of tropospheric ozone concentration in the urban area of Cali, Colombia, suitable for short term forecasting, are presented. Results were obtained by using an univariate time series analysis.
Mauricio Jaramillo Ayerbe, Daniel Enrique González Gómez, María Eugenia Núñez Cabrera, Gloria Esperanza Portilla, Jesús Heriberto Lucio García   +4 more
doaj   +1 more source

MULTIVARIATE ANALYSIS IN VECTOR TIME SERIES [PDF]

This paper reviews the applications of classical multivariate techniques for discrimination, clustering and dimension reduction for time series data. It is shown that the discrimination problem can be seen as a model selection problem.
Daniel Peña, Pedro Galeano
core  

Bayesian time series analysis of terrestrial impact cratering

, 2011
Giant impacts by comets and asteroids have probably had an important influence on terrestrial biological evolution. We know of around 180 high velocity impact craters on the Earth with ages up to 2400Myr and diameters up to 300km.
Alvarez, Alvarez, Alvarez, Bahcall, Bailer-Jones, Berger, Berger, Broadbent, C. A. L. Bailer-Jones, Chang, Christensen, Davis, Deutsch, Gardner, Gregory, Grieve, Grieve, Grieve, Grieve, Hallam, Heisler, Jaynes, Jeffreys, Jetsu, Kass, Le Feuvre, Lyytinen, Mackay, Marden, Matsumoto, McEwen, Montanari, Napier, Napier, Rampino, Shoemaker, Shuter, Stigler, Stigler, Stothers, Torbett, Wickramasinghe, Yabushita, Yabushita, Yabushita   +44 more
core   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

Time Series Analysis Using Composite Multiscale Entropy

Entropy, 2013
Multiscale entropy (MSE) was recently developed to evaluate the complexity of time series over different time scales. Although the MSE algorithm has been successfully applied in a number of different fields, it encounters a problem in that the ...
Kung-Yen Lee, Chun-Chieh Wang, Shiou-Gwo Lin, Chiu-Wen Wu, Shuen-De Wu   +4 more
doaj   +1 more source

Detection of time reversibility in time series by ordinal patterns analysis

, 2018
Time irreversibility is a common signature of nonlinear processes, and a fundamental property of non-equilibrium systems driven by non-conservative forces.
Chavez, Mario, Herrera-Diestra, José L., Martínez, Johann H.   +2 more
core   +2 more sources

Liquid biopsy epigenetics: establishing a molecular profile based on cell‐free DNA

Molecular Oncology, EarlyView.
Cell‐free DNA (cfDNA) fragments in plasma from cancer patients carry epigenetic signatures reflecting their cells of origin. These epigenetic features include DNA methylation, nucleosome modifications, and variations in fragmentation. This review describes the biological properties of each feature and explores optimal strategies for harnessing cfDNA ...
Christoffer Trier Maansson, Anders Lade Nielsen, Boe Sandahl Sorensen   +2 more
wiley   +1 more source