Pearson

Lee K-J, MoCormiok W D, Pearson J E and Swinney H L 1994 Experimental observation of self-replioating spots in a reaotion-diffusion system Nature 369 215-8... 

Mastuura S, Blake G A, Wyss R, Pearson J, Kadow C, Jackson A and Gossard A C 1999 A travelling-wave photomixer based on angle-tuned phase matching Appl. Rhys. Lett. 74 2872-4... 

Matsuura S, Chen P, Blake G A, Pearson J and Pickett H M 1999 A tunable, cavity-locked diode laser system for terahertz photomixing IEEE Micro. Theory Technol. 48 380-7... 

Wiiiiams G, Pearson C, Bryoe M R and Petty M C 1992 Langmuir-Biodgett fiims of Cgg Thin Solid Films 209 150-... 

A.R. Leach, Molecular Modelling - Principles and Applications, 2nd edition, Pearson Education, Harlow, UK, 2001. 

The magnitude of dependencies in the variables is determined by the correlation coefficient. The correlation coefficient according to Pearson is given by Eq. (1). 

Alexandra Seabrook, Pauline Gillet and Julie JCnight at Pearson Education provided the foundation of the publishing team, coping with a steady stream of questions and keeping everyone to schedule. Especial thanks are due to Julie, who did a splendid job as editor. 

Lipman, D ] and W R Pearson 1985. Rapid and Sensitive Protein Similarity Searches. Science 227 1435-1441. 

Pearson W R 1990, Rapid and Sensitive Sequence Comparison with FASTP and FASTA. Methoc Enzymology 183 63-98. 

Pearson W R and D J Lipman 1988. Improved Tools for Biological Sequence Comparison. Proceeding the National Academy of Sciences USA 85 2444-2448. 

It is also important to check for correlations between the descriptors. Highly correlated descriptors could lead to the information that they encode being over-represented. A straightforward way to determine the degree of correlation between two properties is to calculate a correlation coefficient. Pearson s correlation coefficient is given by ... 

Pearson,. I.R.A., 1994. Report on University of Wales Institute of Non-Newtonian Fluid Mechanics Mini Symposium on Continuum and Microstructural Modelling in Computational Rheology. /. Non-Newtonian Fluid Mech. 55, 203 -205. 

Pearson, J. R. A., 1979. Polymer flows dominated by high heat generation and low heat transfer. Polym. Eng. Sci. 18, 1148-1154. 

Pearson, J.R. A., 1985. Mechanics of Polymer Processing, Applied Science Publishers, Barkings, Essex, UK. 

Pearson, J. R. A. and Petrie, C. J. S., 1970a. The flow of a tabular film, part 1 formal mathematical representation. J. Fluid Mech. 40, 1-19. 

The Hard-Soft-Add-Base (HSAB) theory was developed by Pearson in 1963. According to this theory, Lewis acids and Lewis bases are divided into two groups on one hand hard acids and bases, which are usually small, weakly polarizable species with highly localised charges, and on the other hand soft acids and bases which are large, polarizable species with delocalised charges. A selection of Lewis acids, ordered according to their hardness in aqueous solution is presented in Table 1.3. 

R. G. Pearson, Theoretical Models of Chemical Bondinq Part 2 Z. B. Maksic, Ed. Springer-Verlag, Berlin (1990). 

There were two schools of thought concerning attempts to extend Hammett s treatment of substituent effects to electrophilic substitutions. It was felt by some that the effects of substituents in electrophilic aromatic substitutions were particularly susceptible to the specific demands of the reagent, and that the variability of the polarizibility effects, or direct resonance interactions, would render impossible any attempted correlation using a two-parameter equation. - o This view was not universally accepted, for Pearson, Baxter and Martin suggested that, by choosing a different model reaction, in which the direct resonance effects of substituents participated, an equation, formally similar to Hammett s equation, might be devised to correlate the rates of electrophilic aromatic and electrophilic side chain reactions. We shall now consider attempts which have been made to do this. 

Alkenes in (alkene)dicarbonyl(T -cyclopentadienyl)iron(l+) cations react with carbon nucleophiles to form new C —C bonds (M. Rosenblum, 1974 A.J. Pearson, 1987). Tricarbon-yi(ri -cycIohexadienyI)iron(l-h) cations, prepared from the T] -l,3-cyclohexadiene complexes by hydride abstraction with tritylium cations, react similarly to give 5-substituted 1,3-cyclo-hexadienes, and neutral tricarbonyl(n -l,3-cyciohexadiene)iron complexes can be coupled with olefins by hydrogen transfer at > 140°C. These reactions proceed regio- and stereospecifically in the successive cyanide addition and spirocyclization at an optically pure N-allyl-N-phenyl-1,3-cyclohexadiene-l-carboxamide iron complex (A.J. Pearson, 1989). 

A. J. Pearson, Melallo-organic Chemistry, Wiley, Chichester, 1985. 

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