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Combined probability density

PERMUTATIONS AND COMBINATIONS PROBABILITY DENSITY FUNCTION PROBABLE ERROR NORMAL ERROR CURVE STATISTICS (A Primer)... [Pg.773]

Equation (1) says that the wave function for a combination of two atoms can be set equal to a linear combination of the functions of the separate atoms. However, the combination probability density is related to the square of the wave function, in this case c p2A + 2cic2 ypa + o yp%. Of the three terms in this expression, the first c p, is related to the probability density of an electron about atom A if A were isolated similarly, the third term, c yp%, is related to the electron cloud around atom B. The middle term, however, is not simply related to either cloud although the wave functions of both A and B contribute to it. This middle term becomes more important as the degree of overlap of the individual atomic orbitals increases. In using probability densities to obtain energies, inte-... [Pg.48]

Here A and A denote the orientation angles (a, of the magnetic field Bq in the principal axes frame of the interaction tensor (Fig. 3.1.2) during the evolution time t and the detection time (2, respectively. The quantity which characterizes the reorientation process is the combined probability density... [Pg.90]

In the second line, the statistical average has been reformulated in terms of a combined probability density... [Pg.182]

When providing input for the STOMP calculation a range of values of porosity (and all of the other input parameters) should be provided, based on the measured data and estimates of how the parameters may vary away from the control points. The uncertainty associated with each parameter may be expressed in terms of a probability density function, and these may be combined to create a probability density function for STOMP. [Pg.159]

The first approximation we ll consider comes from the interpretation of as a probability density for the electrons within the system. Molecular orbital theory decomposes t(/ into a combination of molecular orbitals <()j, (jij,. To fulfill some of the conditions on we discussed previously, we choose a normalized, orthogonal set of molecular orbitals ... [Pg.259]

Two electrons occupy the in-phase combined orbital. The probability density inaeases in the overlap region. Two more electrons occupy the out-of-phase combined orbital and reduce the density there. The decrease is greater than the increase. The electrons are expelled from the overlap region. [Pg.10]

The application of optimisation techniques for parameter estimation requires a useful statistical criterion (e.g., least-squares). A very important criterion in non-linear parameter estimation is the likelihood or probability density function. This can be combined with an error model which allows the errors to be a function of the measured value. A simple but flexible and useful error model is used in SIMUSOLV (Steiner et al., 1986 Burt, 1989). [Pg.114]

For steady heat flow the probability density should not depend explicitly on time, and so it must be stationary under the combined transition probability given earlier. This can be verified directly ... [Pg.47]

The importance of chemical-reaction kinetics and the interaction of the latter with transport phenomena is the central theme of the contribution of Fox from Iowa State University. The chapter combines the clarity of a tutorial with the presentation of very recent results. Starting from simple chemistry and singlephase flow the reader is lead towards complex chemistry and two-phase flow. The issue of SGS modeling discussed already in Chapter 2 is now discussed with respect to the concentration fields. A detailed presentation of the joint Probability Density Function (PDF) method is given. The latter allows to account for the interaction between chemistry and physics. Results on impinging jet reactors are shown. When dealing with particulate systems a particle size distribution (PSD) and corresponding population balance equations are intro-... [Pg.398]

Some of the above plots can be combined in one graphical display, like onedimensional scatter plot, histogram, probability density plot, and boxplot. Figure 1.7 shows this so-called edaplot (exploratory data analysis plot) (Reimann et al. 2008). It provides deeper insight into the univariate data distribution The single groups are... [Pg.29]

FIGURE 1.7 EDAPLOT of data combines one-dimensional scatter plot, histogram, probability density trace, and boxplot. Data used are CaO concentrations (%) of 180 archaeological glass vessels. [Pg.29]

FIGURE 6.1 Bayes combination of a prior distribution and a likelihood function to obtain a posterior distribution for 0. The vertical axis (not shown) is probability density. [Pg.94]

For example, if motion is constrained to take place within a rectangular region defined by 0 < x < L 0 < y < Ly, then the continuity property that all wavefunctions must obey (because of their interpretation as probability densities, which must be continuous) causes A(x) to vanish at 0 and at Lx. Likewise, B(y) must vanish at 0 and at Ly. To implement these constraints for A(x), one must linearly combine the above two solutions exp(ix(2mEx/h2)1 /2) and exp(-ix(2mEx/h2)l/2) to achieve a function that vanishes at x=0 ... [Pg.15]

The basis set is the set of madiematical functions from which the wave function is constructed. As detailed in Chapter 4, each MO in HF theory is expressed as a linear combination of basis functions, the coefficients for which are determined from the iterative solution of the HF SCF equations (as flow-charted in Figure 4.3). The full HF wave function is expressed as a Slater determinant formed from the individual occupied MOs. In the abstract, the HF limit is achieved by use of an infinite basis set, which necessarily permits an optimal description of the electron probability density. In practice, however, one cannot make use of an infinite basis set. Thus, much work has gone into identifying mathematical functions that allow wave functions to approach the HF limit arbitrarily closely in as efficient a manner as possible. [Pg.166]

The probability density function W(0) at r = 0 and the directional correlation factors for homologous PACA sequences with x = 2 to 7 units are evaluated. The influences of these factors on the cyclization equilibria constants Kx are determined. Agreement of theory with experimental results for x = 3 - 6 is within limits set by uncertainties in the calculations combined with experimental errors, i.e., within about 15 %. [Pg.254]

Now we examine the bonding orbital antibonding orbital ax as well as their probability density functions schematic representation of cr is is shown in Fig. 3.1.5(a). In this combination of two Is orbitals, electron density accumulates in the internuclear region. Also, crls has cylindrical symmetry around the internuclear axis. [Pg.83]


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See also in sourсe #XX -- [ Pg.90 , Pg.182 ]




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