Order cycle

Kauffman and Macready [65] examined pooling strategies on NK fitness landscapes. They simulated two pooling strategies that differed in the order in which amino acid sites were used to partition the best pool each cycle (order of unrandomization) and the number of subpools they were partitioned into. Results were qualitatively the same for both. A pool s fitness was defined as the average fitness of its members. 

Figure 3.8 The phase space of the May-Leonard system (3.89) for a = 2, b = 0.5. Some trajectories are shown, with the direction of motion indicated by the arrows. At long times, the trajectories visit the fixed points (1,0,0), (0,1,0), and (0,0,1) in cycling order and spend increasing times in their proximity.

The first category, customer service, is a primary concern to the warehouse management and upper management. Rating of customer service is based on how well the warehouse performs against its corporate service goals. These goals may include order-to-deUvery cycle, order-to-ship cycle, and out-of-stock occurrences. 

Rgure 5.6 Some simple current cycles (a) weak (exit order = 2, cycle order = 1), (b) critical (1, 1, respectively), (c) strong (1,2, respectively). (Adapted from Eiswirth et al.,... 

In the design of schemes to satisfy these requirements, one of the key decisions which has to be taken at an early stage Is the choice of the cycle order, l.e., the reciprocal of the fraction of the core removed at each refuelling shutdown. 

In general, as the cycle order Increases the refuelling Interval decreases and it is clearly possible to operate the reactor with progressively smaller margins of excess reactivity and fuel Inventory. 

Once the cycle order has been selected, it becomes necessary to consider the actual features of the fuel management scheme. It is convenient to consider the question of axial fuel management first since this is relatively independent of core size and power output. 

MWd/TeU would be attainable in the Winfrith reactor without increase In the level of feed enrichment by adopting more efficient fuel management schemes of higher cycle order. As will be shown, special provision has also been made to Irradiate demonstration batches of fuel to beyond... 

Enrichment and hence fuel costs decrease with Increasing cycle order, the lowest cost being obtained with continuous onload refuelling. 

The other important parameter besides cycle order is the selection of discharge burn-up. An Increase In the discharge burn-up has the following consequences. 

PTC 19.11-1997 Steam and Water Sampling Conditioning and Analysis in the Power Cycle Order No. D01197 75.00... 

Using different types of time-stepping techniques Zienkiewicz and Wu (1991) showed that equation set (3.5) generates naturally stable schemes for incompressible flows. This resolves the problem of mixed interpolation in the U-V-P formulations and schemes that utilise equal order shape functions for pressure and velocity components can be developed. Steady-state solutions are also obtainable from this scheme using iteration cycles. This may, however, increase computational cost of the solutions in comparison to direct simulation of steady-state problems. 

The mechanism by which Lewis-acids can be expected to affect the rate of the Diels-Alder reaction in water is depicted in Scheme 2.6. The first step in the cycle comprises rapid and reversible coordination of the Lewis-acid to the dienophile, leading to a complex in which the dienophile is activated for reaction with the diene. After the irreversible Diels-Alder reaction, the product has to dissociate from the Lewis-acid in order to make the catalyst available for another cycle. The overall... 

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