Ignorance factor

These quartic equations are solved in an iterative maimer and, as such, are susceptible to convergence difficulties. In any such iterative process, it is important to start with an approximation reasonably close to the final result. In CC theory, this is often achieved by neglecting all of tlie temis tliat are nonlinear in the t amplitudes (because the ts are assumed to be less than unity in magnitude) and ignoring factors that couple different doubly-excited CSFs (i.e. the sum over i, f, m and n ). This gives t amplitudes that are equal to the... 

The detection method can also be a source of potential variations from instrument to instrument. For example, UV detectors usually specify the wavelength accuracy to within +/-1-3 nm, and a change of this value could prove significant. Another, often ignored, factor is the time constant of the detector. Too low a setting of this factor can show significant noise levels and too high a value can distort the peak shape. 

In Eqs. (14.3) and (14.4) fil is the ns-(n — l)p dipole matrix element. Eq. (14.3) makes it apparent that the requirement for driving the transition is that the time integrated interaction be one. Solving Eq. (14.4) for b2, ignoring factors of n, gives the cross section crR for the resonant collisional energy transfer. Explicitly,... 

The common raw materials of particleboard are wood, adhesive, and wax emulsion. High quality particleboard at the optimum production rate demands continuous monitoring of the wood material to determine when adjustments should be made in the process or the adhesive. Monitoring of the adhesive and wax emulsion quality is a critical, but often ignored, factor in particleboard manufacture. 

Taking the easy case of line broadening first, one way for the lines to be so wide is if the excited state lifetimes are very short, on the order of femtoseconds. Fourier analysis indicates that the spectral line width Ap of a transition of lifetime t (ignoring factors of it) is approximately 1/t, and so the fractional line width of the line Ap/pq 1/tpo- It is more convenient to use energy units of inverse wavelength (1/A., or cm" ). Let the energy of the center frequency be given as (in cm" ) with lifetime r. The fractional line width then is... 

Checklists Checkhsts are comprehensive lists of environmental effects and impact indicators designed to stimulate the analyst to think broadly about possible consequences of contemplated actions. This strength can also be a weakness, however, because it may lead the analyst to ignore factors that are not on the Usts. Checklists are found in one form or another in nearly all EIA methods. 

For a car weighing 980 kg, how much work must be done to move the car 24 miles Ignore factors such as... 

This oxidation model, however, ignores factors such as relativity differences between polymers and differences in oxygen permeability. Also, it does not account for the fact that the nature and character of the propagating radicals is not the same for aU polymers. Polymers show a wide variation in susceptibility to thermal autoxidation. The ease of autoxidation depends primarily on the relative C-H bond dissociation energies for the component parts of the polymer structure. Once the free-radical process is initiated, autoxidation proceeds. The abstraction of the most labile hydrogen atom in the polymer by alkylperoxy radical predominates in the propagation step. This follows this order ... 

It may be preferable to specify the amount of overdesign required for a specific service, rather than specify fouling factors. Aii too often fouiing factors realiy serve as "fudge or "ignorance" factors. A weil-conceived set of criteria for equipment design wiii avoid many problems associated with fouling. 

Afterglow and smouldering This is an important, but often ignored factor, as it can cause re-ignition after a fire has apparently been extinguished. 

This equation ignores factor (c), but is fairly reliable for large ions, such as the tetra-alkylammonium ions, and for the more non-polar solvents, where solvation will not be expected to be critically important. 

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