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Subsystem distribution

Energy subsystem acts as a resomce of safety for the MWTO. Input and output data from different sensors, position measuring systems and MWTO subsystems form data flows. Information subsystem distributes data flows circulation during the... [Pg.26]

Thus, the neglect of the off-diagonal matrix elements allows the change from mixed states of the nuclear subsystem to pure ones. The motion of the nuclei leads only to the deformation of the electronic distribution and not to transitions between different electronic states. In other words, a stationary distribution of electrons is obtained for each instantaneous position of the nuclei, that is, the elechons follow the motion of the nuclei adiabatically. The distribution of the nuclei is described by the wave function x (R i) in the potential V + Cn , known as the proper adiabatic approximation [41]. The off-diagonal operators C n in the matrix C, which lead to transitions between the states v / and t / are called operators of nonadiabaticity and the potential V = (R) due to the mean field of all the electrons of the system is called the adiabatic potential. [Pg.558]

In usiag these failure rates an exponential distribution for time to failure was assumed. Such an assumption should be made with caution. Parallel Systems. A parallel (or redundant) system is not considered to be ia a failed state unless all subsystems have failed. The system rehabihty is calculated as... [Pg.8]

The component controllers used in the controller subsystem portion of the DCS can be of various types and include multiloop controllers, programmable logic controllers, personal computer controllers, singleloop controllers, and fieldbus controllers. The type of elec tronic con-troUer utihzed depends on the size and func tional characteristic of the process apphcation being controlled. See the earlier section on distributed control systems. [Pg.775]

Critical points were obtained by inspection of histograms Pl N — Nb) of the number difference on different length scales L and analysis by the fourth-order cumulant (see Sec. IV A) obtained by subdivision of the simulation boxes of sizes and V2 (Ei + F2 = F) into smaller subsystems of size Lx L. For A < Ac the distributions are all singly peaked, for larger A a single-peak structure of Pl a b) results for large L and a double-peak structure for small L. An analysis of these histograms with the cumulants Ui = - ((V - - Nb) ) allows a determination of critical... [Pg.88]

Theoretical investigations of quenched-annealed systems have been initiated with success by Madden and Glandt [15,16] these authors have presented exact Mayer cluster expansions of correlation functions for the case when the matrix subsystem is generated by quenching from an equihbrium distribution, as well as for the case of arbitrary distribution of obstacles. However, their integral equations for the correlation functions... [Pg.295]

Let us consider a simple model of a quenched-annealed system which consists of particles belonging to two species species 0 is quenched (matrix) and species 1 is annealed, i.e., the particles are allowed to equlibrate between themselves in the presence of 0 particles. We assume that the subsystem composed of 0 particles has been a usual fluid before quenching. One can characterize it either by the density or by the value of the chemical potential The interparticle interaction Woo(r) does not need to be specified for the moment. It is just assumed that the fluid with interaction woo(r) has reached an equlibrium at certain temperature Tq, and then the fluid has been quenched at this temperature without structural relaxation. Thus, the distribution of species 0 is any one from a set of equihbrium configurations corresponding to canonical or grand canonical ensemble. We denote the interactions between annealed particles by Un r), and the cross fluid-matrix interactions by Wio(r). [Pg.297]

Given a size N lattice (thought of now as a heat-bath), consider some subsystem of size n. An interesting question is whether the energy distribution of the subsystem, Pn E), is equal to the canonical distribution of a thermodynamic system in equilibrium. That is, we are interested in comparing the actual energy distribution... [Pg.385]

Hot water generators are the simplest systems overall, although many larger institutional and commercial hydronic heating plants contain fairly complex distribution systems that may include high and low flow rate subsystems and primary and secondary piping schemes in either series or parallel configurations. [Pg.67]

When are the simplified results valid If the work path has buffer regions at its beginning and end during which the work parameter is fixed for a time > Tshort, then the subsystem will have equilibrated at the initial and final values of p in each case. Hence the odd work vanishes because TL 0, and the probability distribution reduces to Boltzmann s. [Pg.57]

The steady-state probability distribution for a system with an imposed temperature gradient, pss(r p0, pj), is now given. This is the microstate probability density for the phase space of the subsystem. Here the reservoirs enter by the zeroth, (10 = 1 /k To, and the first, (i, = /k T, temperatures. The zeroth energy moment is the ordinary Hamiltonian,... [Pg.65]

From these data, aquatic fate models construct outputs delineating exposure, fate, and persistence of the compound. In general, exposure can be determined as a time-course of chemical concentrations, as ultimate (steady-state) concentration distributions, or as statistical summaries of computed time-series. Fate of chemicals may mean either the distribution of the chemical among subsystems (e.g., fraction captured by benthic sediments), or a fractionation among transformation processes. The latter data can be used in sensitivity analyses to determine relative needs for accuracy and precision in chemical measurements. Persistence of the compound can be estimated from the time constants of the response of the system to chemical loadings. [Pg.35]

With applications to protein solution thermodynamics in mind, we now present an alternative derivation of the potential distribution theorem. Consider a macroscopic solution consisting of the solute of interest and the solvent. We describe a macroscopic subsystem of this solution based on the grand canonical ensemble of statistical thermodynamics, accordingly specified by a temperature, a volume, and chemical potentials for all solution species including the solute of interest, which is identified with a subscript index 1. The average number of solute molecules in this subsystem is... [Pg.320]

For entirely nonadiabatic transitions, the transition probabilities are so small that the reaction does not disturb the equilibrium distribution in the nuclear subsystems (q9 Q, s), and the calculation of the mean transition probability is reduced to averaging the corresponding local transition probability over the equilibrium distribution of the coordinates q, Q, s ... [Pg.161]

The carrier-phonon interaction decreases with the lowering of temperature, since the emission and absorption of phonons by carriers is proportional to the number of final states available to carriers and phonons. At sufficiently low temperatures, the interaction between the two subsystems can be so weak that there is no thermal equilibrium between them, and the energy is distributed among electrons more rapidly than it is distributed to the lattice, resulting in a different temperature for electron and phonon subsystems, giving rise to the so-called electron-phonon decoupling . [Pg.327]

Optimization can take place at many levels in a company, ranging from a complex combination of plants and distribution facilities down through individual plants, combinations of units, individual pieces of equipment, subsystems in a piece of... [Pg.5]

This makes it clear that we regard our System as spanning the entire business there is one per VideoBusiness. It will probably be designed as a distributed system of independent subsystems in each store but that apsect will be captured separately. [Pg.644]

Electric Power System Design For specific applications, fuel cells can be used to supply DC power distribution systems designed to feed DC drives such as motors or solenoids, controls, and other auxiliary system equipment. The goal of the commercial fuel cell power plant is to deliver usable AC power to an electrical distribution system. This goal is accomplished through a subsystem that has the capability to deliver the real power (watts) and reactive power (VARS) to a facility s internal power distribution system or to a utility s grid. The power conditioning... [Pg.226]

Much of the recent literature on RDM reconstruction functionals is couched in terms of cumulant decompositions [13, 27-38]. Insofar as the p-RDM represents a quantum mechanical probability distribution for p-electron subsystems of an M-electron supersystem, the RDM cumulant formalism bears much similarity to the cumulant formalism of classical statistical mechanics, as formalized long ago by by Kubo [39]. (Quantum mechanics introduces important differences, however, as we shall discuss.) Within the cumulant formalism, the p-RDM is decomposed into connected and unconnected contributions, with the latter obtained in a known way from the lower-order -RDMs, q < p. The connected part defines the pth-order RDM cumulant (p-RDMC). In contrast to the p-RDM, the p-RDMC is an extensive quantity, meaning that it is additively separable in the case of a composite system composed of noninteracting subsystems. (The p-RDM is multiphcatively separable in such cases [28, 32]). The implication is that the RDMCs, and the connected equations that they satisfy, behave correctly in the limit of noninteracting subsystems by construction, whereas a 2-RDM obtained by approximate solution of the CSE may fail to preserve extensivity, or in other words may not be size-consistent [40, 42]. [Pg.262]


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See also in sourсe #XX -- [ Pg.373 ]




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