scholarly journals Analytic Properties of Statistical Total Correlation Spectroscopy Based Information Recovery in1H NMR Metabolic Data Sets

2009 ◽  
Vol 81 (6) ◽  
pp. 2075-2084 ◽  
Author(s):  
Alexessander Couto Alves ◽  
Mattias Rantalainen ◽  
Elaine Holmes ◽  
Jeremy K. Nicholson ◽  
Timothy M. D. Ebbels
2011 ◽  
Vol 83 (6) ◽  
pp. 2075-2082 ◽  
Author(s):  
Caroline J. Sands ◽  
Muireann Coen ◽  
Timothy M. D. Ebbels ◽  
Elaine Holmes ◽  
John C. Lindon ◽  
...  

2009 ◽  
Vol 81 (15) ◽  
pp. 6458-6466 ◽  
Author(s):  
Caroline J. Sands ◽  
Muireann Coen ◽  
Anthony D. Maher ◽  
Timothy M. D. Ebbels ◽  
Elaine Holmes ◽  
...  

2009 ◽  
Vol 81 (1) ◽  
pp. 288-295 ◽  
Author(s):  
Anthony D. Maher ◽  
Olivier Cloarec ◽  
Prasad Patki ◽  
Michael Craggs ◽  
Elaine Holmes ◽  
...  

2005 ◽  
Vol 77 (5) ◽  
pp. 1282-1289 ◽  
Author(s):  
Olivier Cloarec ◽  
Marc-Emmanuel Dumas ◽  
Andrew Craig ◽  
Richard H. Barton ◽  
Johan Trygg ◽  
...  

2011 ◽  
Vol 84 (2) ◽  
pp. 1083-1091 ◽  
Author(s):  
Anthony D. Maher ◽  
Judith M. Fonville ◽  
Muireann Coen ◽  
John C. Lindon ◽  
Caroline D. Rae ◽  
...  

Author(s):  
Alexey S. Kiryutin ◽  
Ivan V. Zhukov ◽  
Fabien Ferrage ◽  
G Bodenhausen ◽  
Alexandra V. Yurkovskaya ◽  
...  

A novel method dubbed ZULF-TOCSY results from the combination of Zero and Ultra-Low Field (ZULF) with high-field, high-resolution NMR, leading to a generalization of the concept of total correlation spectroscopy...


2020 ◽  
Vol 11 (17) ◽  
pp. 7291-7296
Author(s):  
Ivan V. Zhukov ◽  
Alexey S. Kiryutin ◽  
Fabien Ferrage ◽  
Gerd Buntkowsky ◽  
Alexandra V. Yurkovskaya ◽  
...  

Author(s):  
Bruce West ◽  
Damien West

AbstractAllometry relations (ARs) in physiology are nearly two hundred years old. In general if X ij is a measure of the size of the i th member of a complex host network from species j and Y ij is a property of a complex subnetwork embedded within the host network an intraspecies AR exists between the two when Y ij = aX ijb. We emphasize that the reductionist models of AR interpret X ij and Y ij as dynamic variables, albeit the ARs themselves are explicitly time independent. On the other hand, the phenomenological models of AR are based on the statistical analysis of data and interpret 〈X i〉 and 〈Y i〉 as averages over an ensemble of individuals to yields the interspecies AR 〈Y i〉 = a〈X i〉b. Modern explanations of AR begin with the application of fractal geometry and fractal statistics to scaling phenomena. The detailed application of fractal geometry to the explanation of intraspecies ARs is a little over a decade old and although well received it has not been universally accepted. An alternate perspective is given by the interspecies AR based on linear regression analysis of fluctuating data sets. We emphasize that the intraspecies and interspecies ARs are not the same and show that the interspecies AR can only be derived from the intraspecies one for a narrow distribution of fluctuations. This condition is not satisfied by metabolic data as is shown separately for aviary and mammal data sets. The empirical distribution of metabolic allometry coefficients is shown herein to be Pareto in form. A number of reductionist arguments conclude that the allometry exponent is universal, however herein we derive a deterministic relation between the allometry exponent and the allometry coefficient using the fractional calculus. The co-variation relation violates the universality assumption. We conclude that the interspecies physiologic AR is entailed by the scaling behavior of the probability density, which is derived using the fractional probability calculus.


2003 ◽  
Vol 57 (8) ◽  
pp. 996-1006 ◽  
Author(s):  
Slobodan Šašić ◽  
Yukihiro Ozaki

In this paper we report two new developments in two-dimensional (2D) correlation spectroscopy; one is the combination of the moving window concept with 2D spectroscopy to facilitate the analysis of complex data sets, and the other is the definition of the noise level in synchronous/asynchronous maps. A graphical criterion for the latter is also proposed. The combination of the moving window concept with correlation spectra allows one to split a large data matrix into smaller and simpler subsets and to analyze them instead of computing overall correlation. A three-component system that mimics a consecutive chemical reaction is used as a model for the illustration of the two ideas. Both types of correlation matrices, variable–variable and sample–sample, are analyzed, and a very good agreement between the two is met. The proposed innovations enable one to comprehend the complexity of the data to be analyzed by 2D spectroscopy and thus to avoid the risks of over-interpretation, liable to occur whenever improper caution about the number of coexisting species in the system is taken.


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