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Bump-number

In Fig. 14 the first column labels the linear extensions, which are represented as sequences in rows 1 - 14. A sequence a b c. .. is to be read as a > b > c. Furthermore there is a sequence (last row in the table) which is not a linear extension of (E, <). Vertical bold lines indicate jumps (see below). The last column indicates the number of jumps of each single linear extension. Consecutive elements in linear extensions (LEX(E ), <), which have no correspondence in (E, <) are called "jumps" (see Fig. 14, the vertical bold lines indicating jumps). The jump number, jump (LEX,(A , <)), obviously depends on the actual selected linear extension. The jump number of a poset (E, <), jump (E, <), is just min(jump(LEXj (E, <))), whereby the minimum is to be found by checking all linear extensions. Beside the jump - number there is also a bump - number. Once again the bump number is to be referenced to a specific linear extension. A bump is a consecutive pair of elements in a linear extension, which are comparable in the underlying poset. The bump number of a poset is the maximum about all bump numbers found for the linear extensions. If a linear extension of n elements is formed then n-1 consecutive relations are found in a linear extension. Therefore... [Pg.84]

In principle, the step-response coefficients can be determined from the output response to a step change in the input. A typical response to a unit step change in input u is shown in Fig. 8-43. The step response coefficients are simply the values of the output variable at the samphng instants, after the initial value y(0) has been subtracted. Theoretically, they can be determined from a single-step response, but, in practice, a number of bump tests are required to compensate for unanticipated disturbances, process nonhnearities, and noisy measurements. [Pg.740]

Coolant flow is set by the designed temperature increase of the fluid and needed mass velocity or Reynolds number to maintain a high heat transfer coefficient on the shell side. Smaller flows combined with more baffles results in higher temperature increase on the shell side. Reacting fluid flows upwards in the tubes. This is usually the best plan to even out temperature bumps in the tube side and to minimize temperature feedback to avoid thermal runaway of exothermic reactions. [Pg.176]

Starting with a ceramic and depositing an aluminum oxide coating. The aluminum oxide makes the ceramic, which is fairly smooth, have a number of bumps. On those bumps a noble metal catalyst, such as platinum, palladium, or rubidium, is deposited. The active site, wherever the noble metal is deposited, is where the conversion will actually take place. An alternate to the ceramic substrate is a metallic substrate. In this process, the aluminum oxide is deposited on the metallic substrate to give the wavy contour. The precious metal is then deposited onto the aluminum oxide. Both forms of catalyst are called monoliths. [Pg.480]

Notice that elongation doesn t change the number of carbon atoms between the double bond and the CH3 group at the left end. If a double bond is closer than 7 carbon atoms to the CH3 group (numbering the CH3 as 1, the first double bond you bump into would start at carbon 7), a plant must have made it. [Pg.175]

The cellulose specimen under examination is refluxed in the acid-oxidant mixture and the gases formed are swept continuously into an absorption train by a carrier stream of air free of carbon dioxide. Conrad and Scroggie20 have added a number of important improvements which apparently increase the reproducibility of results. One of their modifications is a stirrer in the reaction chamber which reduces the danger of bumping caused by superheating. The latter is undesirable since the reaction is apparently quite sensitive to the temperature. [Pg.122]

Up to now we have been discussing the local properties of the exchange-correlation potential as a function of the spatial coordinate r. However there are also important proi rtira of the exchange-correlation potential as a function of the particle number. In fact there are close connections between the properties as a function of the particle number and the local properties of the exchange-correlation potential. For instance the bumps in the exchange-correlation potential are closely related to the discontinuity properties of the potential as a function of the orbital occupation number [38]. For heteronuclear diatomic molecules for example there are also similar connections between the bond midpoint shape of the potential and the behavior of the potential as a function of the number of electrons transferred from one atomic fragment to another when... [Pg.141]

Notice that this limit cycle goes through a number of small loops, each one corresponding to one small bump of the profile of S12 (t) in the top plot of Figure 4.57, followed by a wide swing in the profile of s 12(f) and the corresponding large limit cycle loop approximately once every 11 seconds. [Pg.242]

It will be apparent that the ionic radius increases with the coordination number this effect is much more marked for cations than for anions. Since cations are mostly smaller than the counter-anions in the ionic solid (excluding, of course, solids containing complex ions), the cation-anion distance is usually determined by the need to pack anions around cations without the former bumping into each other. As the coordination number is increased, the cation-anion distance tends to increase in order to make room for the larger number of anions around the cation. [Pg.120]

The comparison of the computed cross sections of fullerenes and buckyonions with observations of the UV bump for Ry = 3.1 allow an estimate of the number of these molecules in the diffuse interstellar medium. Let us describe the extinction curve as a + a2x + a37Tx) where 7Tx) is the theoretical cross section computed for each fullerene or buckyonion. Here we assume that indeed the extinction at the energy of the bump is the result of the fullerene plus silicate contributions. We obtain via a least squared fit the relative contribution of the two components (see Fig. 1.6b). The coefficients of this lineal component do not depend significantly on the particular fullerene under consideration taking typical values of a, 1.6 and a2 = 0.07 with a relative error of 20%. [Pg.12]

Indeed, the actual carbon fraction in fullerenes depend of the proper mixture of these molecules in the interstellar medium. It is likely that the number density of fullerenes and buckyonions will decrease with increasing radius (R). A distribution of the type N(full) a R m has been frequently considered in the literature on interstellar grain populations (Mathis et al. 1977). A mixture of fullerenes and buckyonions following such size distribution may reproduce the observed UV bump. The best fits to the shape, peak energy and width of the bump are obtained for m values in the range 2.5 4.5 (Fig. 1.6b). [Pg.13]

From the dependence of the number of bright spots on the rhB concentrations (Fig. 16) we inferred that the observed positions of fluorescent spots were associated with intrinsic sites (pits or bumps) dotted on the Si surfaces. One possible reason for this inference is that an increase in the number of bright fluorescent spots in the 10-7-, 10-6-, and 10-5-M submonolayers involves gradual filling of sites on a Si surface by rhB molecules. Thus, the saturation of the number of bright spots and the appearance of the extra fluorescence not associated with the bright spots from the 10-5- to 10-4-M submonolayers might be due to saturation of the sites and the subsequent spillover of rhB molecules not settled within the sites. [Pg.495]


See other pages where Bump-number is mentioned: [Pg.160]    [Pg.335]    [Pg.107]    [Pg.37]    [Pg.46]    [Pg.137]    [Pg.155]    [Pg.228]    [Pg.98]    [Pg.196]    [Pg.220]    [Pg.238]    [Pg.60]    [Pg.300]    [Pg.24]    [Pg.216]    [Pg.2]    [Pg.11]    [Pg.12]    [Pg.18]    [Pg.29]    [Pg.33]    [Pg.253]    [Pg.15]    [Pg.107]    [Pg.495]    [Pg.497]    [Pg.178]    [Pg.49]    [Pg.58]    [Pg.101]    [Pg.128]    [Pg.129]    [Pg.175]    [Pg.160]   
See also in sourсe #XX -- [ Pg.84 ]




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