Array Constants

In the same way that a worksheet formula can contain a simple constant, e.g., the value 3 in the formula =3 A1+A2, an array formula can contain an array constant. An array constant is included in a formula by enclosing the array of values in braces. In this case you must type the braces. When you enter the completed array formula by pressing CONTROL+SHIFT+ENTER, Excel automatically provides braces around the whole formula. 

Within an array, values in the same row are separated by commas, and rows of values are separated by semicolons. For example, the array constant 2, 3,4 3, 2, -1 4,3, 7 represents a 3 x 3 array... 

Array constants can contain number or text values, but they cannot contain references. Individual text values in an array constant must be enclosed in quotes. 

An array constant is usually incorporated in a worksheet formula, e.g.,... 

An array constant can be entered as a named variable in the Define Name dialog box, as shown in Figure 4-5. 

Figure 4-5. An array constant entered as a named variable.

Let s begin with a simple example, the evaluation of N, and evaluate it for N = 10. You could use an array constant as shown in the following example ... 

Minimum distortion of image (spectral lines) across the array. Constant magnification. 

In this work, 60 pm x 60 pm arrays of Ag or Au nanoparticles were prepared with varied shapes and arrangements. Keeping all the other parameters in the array constant, the lattice spacing of the array has been varied from near contact to a few hundred nanometer separation. 

Another way of calculating the electrostatic component of solvation uses the Poisson-Boltzmann equations [22, 23]. This formalism, which is also frequently applied to biological macromolecules, treats the solvent as a high-dielectric continuum, whereas the solute is considered as an array of point charges in a constant, low-dielectric medium. Changes of the potential within a medium with the dielectric constant e can be related to the charge density p according to the Poisson equation (Eq. (41)). 

A metier is an array of individual extmsion positions on one machine. The yam is collected as a package, eg, bobbin, tube, pirn, at each metier position and removed from the machine at regular intervals to maintain a constant supply of yam on each package. The package may contain 0.5—7.0 kg of yam. Bobbin yam may contain a slight twist, ie, ca 0.08 turns per cm, whereas yam taken up on tubes may have zero twist. The yam is transferred from bobbins to different packages for sale. The product may contain a twist of 0.3—8.0 turns per cm. At present, compacted yam is more popular than low twist yam. 

Crystals A crystal may be defined as a solid composed of atoms arranged in an orderly, repetitive array. The interatomic distances in a ciyst of any definite material are constant and are characteristic of that material. Because the pattern or arrangement of the atoms is repeated in all directions, there are definite restrictions on the lands or symmetry that crystals can possess. 

Here, since the measurements were done in an integral reactor, calculation must start with the Conversion vs. Temperature function. For an example see Appendix G. Calculation of kinetic constants starts with listed conversion values as vX and corresponding temperatures as vT in array forms. The Vectorize operator of Mathcad 6 tells the program to use the operators and functions with their scalar meanings, element by element. This way, operations that are usually illegal with vectors can be executed and a new vector formed. The v in these expressions indicates a vector. 

Solar array efficiency depends on its orientation to the sun. The best result is achieved if the array faces the sun at an angle of 90° to S5°. Precise orientation can be achieved either through the rotation of the whole spacecraft, or the rotation of the solar arrays only. To ensure constant electricity flow regardless of changes in spacecraft orientation, solar arrays charge... 

Assignment—As>s gn a value, either a constant or a computed value, to a variable, an array element, a node, or a field. 

Assignment statements—Assign values by numerical or character constants, by expressions (see Table 1-29 for arithmetic and set operators), or by input to variables, array elements, and fields... 

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