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Operators bounded

If T is a symmetric operator bounded below,365 we can define a quadratic form J by /[/, g] = (Tf, g ) with 5)(V) = 2)(T). Then J is shown to have a closed extension.375 The self-adjoint operator belonging to J is an extension of T and will be called the Friedrichs extension of T. It should be noted that wre can in... [Pg.9]

Y.F.Rashed. Boundary element primer fundamental solutions. I simple and comp und operators. Bound. Element Comm., 13(1 ) 38, 2002. [Pg.565]

K is a kinematic operator that damps the high momentum part of the wave function while keeps the low momentum part intact. Its appearance makes the DK-SOC operator bounded from below and variationally stable and a much better SOC operator than the BP-SOC. The effect of the K operator is illustrated by Fig. 8.7, where the 6p orbitals of Tl, At, and Rn are taken as examples. While the radial distribution function of the original Tl 6p orbital (Tl 6p) and the one after the operator of K (Tl K6p) are highly similar in Fig. 8.7a, the squares of these functions... [Pg.227]

The K-Reactor Fire Protection Project Cold Stan Ky Report 4>2S) documents and updates the fire hazard present Ibr K Reactor in Cold Standi and the fire hazard to personnel, based on previously Issued analyses and reports, and provides the tedimcal baseline for fire protection improvements. The conditions, on which Reference 4 24 was based, such as combustible loading, plant configuration, fire suppression, K-Reactor structural configuration, and occupancy of K-Reactor. have been improved to dimhiish the fire hazards. The conditions evaluated In Reference 4-24 for the K-Reactor in operation bounds the condition of K-Reactor in Cold Standby. [Pg.78]

Now comes an important observation. Because L is not an invertible operator, bounded solutions of (13) exist only if its right hand side is orthogonal to all elements in the null space of the adjoint operator L. The null space of L is easily determined it is the three-dimensional space spanned by the linearly independent functions... [Pg.102]

In the absence of lactose (Figure 17.9b), the regulator gene produces an mRNA molecule which gives rise to a protein which has an affinity for the operator site. Since the promoter and operator sites overlap, the operator-bound protein prevents the attachment of RNA polymerase. Transcription of the structural genes denoted as lacZ, lac Y and lacA is inhibited, i.e. repressed, therefore the protein product of the regulator gene is termed a... [Pg.220]

Resource conflict resolution. A resource binding implies a cotain configuration of hardware sharing. In general, resource conflicts can arise when a resource is accessed simultaneously by multiple op tions. These conflicts can be resolved by serializing operations bound to the same resource that can otherwise execute in parallel. Timing constraints must still be satisfied after conflict resolution. [Pg.46]

Proof We will prove by contradiction. Assume there exists an allocation oiiower t) < oic/it) such that no resource conflicts will arise if aiower(t) resources of type t are allocated. Since aj<, /er(<) < cfactor G,0 t)), there exists at least one resource binding that is derived from the allocation aiower(t) where two operations bound to the same hardware resource may execute in parallel. This results in a resource conflict and hence contradicts the previous assertion that Qiower t) is a conflict-free allocation of t. Therefore, acj t) = cfactor(G,0 t)) is the conflict-free allocation of t. ... [Pg.102]

As a result of possible recrossings of the transition state, the classical RRKM lc(E) is an upper bound to the correct classical microcanonical rate constant. The transition state should serve as a bottleneck between reactants and products, and in variational RRKM theory [22] the position of the transition state along q is varied to minimize k E). This minimum k E) is expected to be the closest to the truth. The quantity actually minimized is N (E - E ) in equation (A3.12.15). so the operational equation in variational RRKM theory is... [Pg.1015]

We can now proceed to the generation of conformations. First, random values are assigne to all the interatomic distances between the upper and lower bounds to give a trial distam matrix. This distance matrix is now subjected to a process called embedding, in which tl distance space representation of the conformation is converted to a set of atomic Cartesic coordinates by performing a series of matrix operations. We calculate the metric matrix, each of whose elements (i, j) is equal to the scalar product of the vectors from the orig to atoms i and j ... [Pg.485]

For the kind of potentials that arise in atomic and molecular structure, the Hamiltonian H is a Hermitian operator that is bounded from below (i.e., it has a lowest eigenvalue). Because it is Hermitian, it possesses a complete set of orthonormal eigenfunctions ( /j Any function spin variables on which H operates and obeys the same boundary conditions that the ( /j obey can be expanded in this complete set... [Pg.57]

There is little evidence for the operation in reactions of the inducto-meric effect, the time-dependent analogue of the inductive effect. This may be so because the electrons of the delocalized system, and are thus not so susceptible to the demands of the reagent. [Pg.128]

There will be incidences when the foregoing assumptions for a two-tailed test will not be true. Perhaps some physical situation prevents p from ever being less than the hypothesized value it can only be equal or greater. No results would ever fall below the low end of the confidence interval only the upper end of the distribution is operative. Now random samples will exceed the upper bound only 2.5% of the time, not the 5% specified in two-tail testing. Thus, where the possible values are restricted, what was supposed to be a hypothesis test at the 95% confidence level is actually being performed at a 97.5% confidence level. Stated in another way, 95% of the population data lie within the interval below p + 1.65cr and 5% lie above. Of course, the opposite situation might also occur and only the lower end of the distribution is operative. [Pg.201]

An Xc2 excimer laser has been made to operate in this way, but of much greater importance are the noble gas halide lasers. These halides also have repulsive ground states and bound excited states they are examples of exciplexes. An exciplex is a complex consisting, in a diatomic molecule, of two different atoms, which is stable in an excited electronic state but dissociates readily in the ground state. In spite of this clear distinction between an excimer and an exciplex it is now common for all such lasers to be called excimer lasers. [Pg.357]

Theorem 1.16. Let V be a reflexive separable Banach space, and K be a closed convex subset in V. Assume that an operator A V V is pseudomonotonous, and A is coercive or K is bounded. Then the inequality (1.86) has a solution. [Pg.33]

Let K cV he a. convex closed subset of a reflexive Banach space V, I he a duality mapping, and P be a projection operator of V onto K. We are in a position to give a definition of a penalty operator. An operator (5 V V is called a penalty operator connected with the set K if the following conditions are fulfilled. Firstly, / is a monotonous bounded semicontinuous operator. Secondly, a kernel of / coincides with K, i.e. [Pg.37]

Let Q C he a bounded domain with a smooth boundary j. An external normal to 7 is denoted by n = (ni,ri2). Introduce the following operators defined at 7 by... [Pg.112]

To test the validity of boundary conditions (3.119)-(3.122), we need two Green formulas. Let (9 C be a bounded domain with smooth boundary 7 and the outward normal n = (ni,n2). Introduce the following operators on 7 ... [Pg.206]


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See also in sourсe #XX -- [ Pg.42 ]

See also in sourсe #XX -- [ Pg.42 ]




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