D-criterion

The D-criterion, hyperarousal, may manifest as sleep disturbance, irritability, anger outbursts, and concentration problems. Hypervigilance, a persistent agitation with scanning of the environment for danger, can be demonstrated as an exaggerated startle. These symptoms can make children appear hyperactive, erratic, and unfocused. 

The EC of (1) or, more specifically, the ECq of (10), provides information on the percentage of models over a model space F or Fq that are estimable. However, it provides no information on how efficiently models can be estimated. Using the usual D-criterion (see Myers and Montgomery (2002, page 394)) as a measure of the efficiency, Sun (1993) proposed the information capacity (/C) criterion, which was later extended by Li and Nachtsheim (2000). Specifically, for model space Fq in (8), Li and Nachtsheim (2000) defined the information capacity ICq criterion as maximising... 

Figure 4. The substituents Rl, R2 and R3 can be selected using D-optimal design. All the interesting compounds were collected in a pool of candidates. We can remove from this pool some compounds that are difficult to synthesize, toxic, etc.. .. The D-optimal algorithm extracts from the pool the subset that optimizes the D criterion. Seven points are enough to test the six variables used in the design of the ...

The V d criterion used by Held and Campbell relates to a critical value, above which a propagating detonation is produced in a given explosive when shocked by a projectile composed of a given material. 

The V/L ratio is a volatility criterion seldom used in France but is used in Japan and in the United States where it has been standardized as ASTM D 2533. At a given temperature and pressure, the V/L ratio represents the volume of vapor formed per unit volume of liquid taken initially at 0°C. 

Having generated a trial conformation it must be decided whether to accept it or not. To d this a random number is generated in the range 0-1 and compared with the ratio of tf Rosenbluth weights for the trial conformation (W trial) and the old conformation (W/oid The new chain is then accepted using the following criterion ... 

This method is exemplified by its application to quinoline, isoquinoline, cinnoline, and isoquinoline 2-oxide, which are nitrated as their conjugate acids. The rate profiles for these compounds and their N- or O-methyl perchlorates show closely parallel dependences upon acidity (fig. 2.4). Quaternisation had in each case only a small effect upon the rate, making the criterion a very reliable one. It has the additional advantage of being applicable at any temperature for which kinetic measurements can be made (table 8.1, sections B and D). 

In applying this criterion, obs. must be compared with calc, for the same temperature. In general this entails knowledge of the temperature dependence of the relevant acidity function and of the ionisation constant. The latter factor has sometimes been allowed for (as in the calculation of calc, for the nitration of 2,4,6-trimethylpyridine in 98 % sulphuric acid at 80 °C) by using the approximate relationship, -d pKf) dT = (p, -o-9)/T. 

For a proposed reaction mechanism to be valid the sum of its elementary steps must equal the equation for the overall reaction and the mechanism must be consistent with all experimental observations The S l mechanism set forth m Figure 4 6 satisfies the first criterion What about the second d... 

The main criterion of acceptance for results of calculations of MWD for dextran 40 is validity of system suitability test (characteristics of MWD for dextran 40 standai d for system suitability test must be in prescribed intervals). 

This fourth criterion can be met at a low steam drum cost. Only one percent of the cost of the boiler spent on the steam drum can provide it. The fourth criterion is met by requiring that the Drum-Level-Stability Factor (D.L.S.F.) be equal to 1.0 minimum. When this exists the steam drum level will be stable for wide and sudden operational changes. 

T. D. Burchell, A. P. G. Rose and M. O. Tucker. The influence of grain size distribution on a fracture criterion for graphites. In Proc. 17th Biennial Conf on Carbon, Lexington KY, USA. Pub. American Carbon Society, 1985, pp.346 347. 

The first step in the dimensioning process is to choose the mixture ratio jx. For the compressor type, which is not considered here, we choose fx = 3.0, i.e., fii, = 9.1 kg/s. Next we have to decide D, the diameter of the tube, i.e., we need a criterion for the choice of velocity of air. A crucial aspect which affects the choice of velocity is the wearing of the tube the higher the velocity is the greater is the wear. On the other hand, the velocity cannot be too low because of the risk of pluming (the velocity difference v - c has to be positive in all parts of the piping). Here we choose = 50 m/s with =1.2 kg/m. This gives D = 0.44 m. 

A third performance criterion developed for combined heat and power plant involves compari.son between the fuel required to meet the given loads of electricity and heat in the CHP plant with that required in a reference system . The latter involves conventional plants that meet the same load demands (indicated by subscript D), for example, in a conventional electric power station and in a heat only boiler. 

R. C. Tennyson, D. MacDonald, arrd A. P. Nanyaro, Evaluation of the Tensor Polynomial Failure Criterion for Composite Materials, Journal of Composite Materials, January 1978, pp. 63-75. 

Given Eq. (6-1), this criterion states if dPjdx + 8Q/8y does not change its sign (or vanishes identically) in a region D (of the phase plane), no dosed trajectory can exist in D. 

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