Measure of agreement

It has been possible to obtain a good measure of agreement between the experimental results, and those predicted by even a simple mathematical model of the system, assuming ideal stirred tank behaviour. One typical result is presented here. 

Four recent kinetic studies have been made of the exchange in the presence of the sulphate ion in perchlorate media, some measure of agreement being observed between the results of the various workers. 

Results from the random re-analysis of samples show an acceptable measure of agreement with the original analyses. 

R factor (2 fo I I Pc II 2 fc I ) is a measure of agreement between observed (Fo) and calculated (Pc) structural data. Lower values indicate better agreement. 

There was some measure of agreement between participants at the Loyola International Conference on Molecular Luminescence, Chicago 1968, that this term be defined as stated although originally coined to describe complexes of 1.1 and 1.2 stoichiometry.3 Molecular Luminescence, E. C. Lim, Ed., Benjamin, New York, 1969, p. 907 Mol. Photochem., 1 157 (1969). 

Anderson and Kemball (41) investigated the exchange of both these compounds on metal films at low temperatures, and Burwell and his colleagues S9, 37, Ji2) have used bulk catalysts and also films over a wider range of temperature. There is now a good measure of agreement between the views of the two schools. 

In eke attempt to obtain correct calculated intensities the following problem arises gup-pose a particular set of atomic coordinates gives some measure of agreement of calculated with observed intensities for one projection, but nevertheless there are still considerable discrepancies, especially among the higher order reflections—a situation which probably means that the postulated atomic coordinates are roughly correct, but need adjustment. Which atoms should be moved, and by how much ... 

Reproducibility measure of agreement between test results carried out by more than one person with more than one instrument in more than one laboratory. 

The methods used for complete structure determination cannot be reviewed in any detail here. It is well known that the central problem is that of determining the relative phase relations of the diffracted waves. As only the intensities can be observed, the problem may be approached by trial and error calculations until a good measure of agreement with the observed values is obtained. This method has in fact been used for a great many of the aromatic structures dealt with in this article. The rigid molecular frameworks with at most only a few degrees of freedom lend themselves to such a treatment. A more systematic approach along the same lines is possible by the method of Fourier transforms (Lipson and Taylor, 1958). 

In a comparison study, the same individuals are tested by both methods to prevent bias associated with selection of patients. Basically the outcome of the comparison study should be presented in the form of a 2 x 2 table, from which various measures of agreement may be derived (Table 14-6). An obvious measure of agreement is the overall fraction or percentage of the subjects tested that have the same test result (i.e., both results negative or positive)... 

Although O21 is the relevant measure for random error in method comparison studies, p is stili widely used as a supposed measure of agreement between two methods. It should be noted that a systematic difference is not expressed through p thus even though the correlation coefficient is very high, there maybe a considerable bias between the measurements of two methods. 

Summing up, there does seem to be a small measure of agreement about cation sites in small and large port mordenites, but until more data become available, there must be doubt about the positions of sites in the much more catalytically interesting large-port mordenite. 

A hydrogen-bond acidity scale has been constructed by Frange and coworkers and by Sraidi based on log K values for complexation with pyridine N-oxide in cyclohexane (equations 22 and 23). Values for phenols and, for comparison, thiols, chloroform, pyrrole and alcohols are collected in Table 5. There is a fair measure of agreement between log K and log Kf n = 16, r = 0.992) and log (n=9,r = 0.972). 

These reported uses of CW and other matters have led to a general impression that while the superpowers may be approaching some measure of agreement regarding the undesirability of CW, Third World countries are not, and terrorists might well take up such weapons. Phrases such as the poor man s nuclear weapons are often used in the press, and certainly a marked new interest in CW substances and how they might be produced has been generated. 

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