Comparison of an integration procedure to Fourier transform and data averaging procedures in chromatographic data analysis

1986 ◽  
Vol 58 (9) ◽  
pp. 2093-2095 ◽  
Author(s):  
Robert E. Synovec ◽  
Edward S. Yeung
Keyword(s):  
Fourier Transform ◽  
Data Analysis ◽  
Chromatographic Data ◽  
Integration Procedure

scholarly journals THE AZIMUTH STRUCTURE OF NUCLEAR COLLISIONS — I

2008 ◽  
Vol 17 (07) ◽  
pp. 1219-1272 ◽  
Author(s):  
THOMAS A. TRAINOR ◽  
DAVID T. KETTLER
Keyword(s):  
Fourier Transform ◽  
Data Analysis ◽  
Flow Analysis ◽  
Power Spectra ◽  
Reaction Plane ◽  
Correlation Measure ◽  
Directed Flow ◽  
Nuclear Collisions ◽  
The Fourier Transform ◽  
Autocorrelation Method

We describe azimuth structure commonly associated with elliptic and directed flow in the context of 2D angular autocorrelations for the purpose of precise separation of so-called nonflow (mainly minijets) from flow. We extend the Fourier-transform description of azimuth structure to include power spectra and autocorrelations related by the Wiener–Khintchine theorem. We analyze several examples of conventional flow analysis in that context and question the relevance of reaction plane estimation to flow analysis. We introduce the 2D angular autocorrelation with examples from data analysis and describe a simulation exercise which demonstrates precise separation of flow and nonflow using the 2D autocorrelation method. We show that an alternative correlation measure based on Pearson's normalized covariance provides a more intuitive measure of azimuth structure.

Identification of Adulteration of Gasoline Applying Multivariate Data Analysis Techniques HCA and KNN in Chromatographic Data

2005 ◽  
Vol 19 (6) ◽  
pp. 2350-2356 ◽  
Author(s):  
Vinicius L. Skrobot ◽  
Eustáquio V. R. Castro ◽  
Rita C. C. Pereira ◽  
Vânya M. D. Pasa ◽  
Isabel C. P. Fortes
Keyword(s):  
Data Analysis ◽  
Multivariate Data Analysis ◽  
Multivariate Data ◽  
Chromatographic Data ◽  
Analysis Techniques
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