Selection strategies

There are several methods that can be used to choose which strings will act as parents for the next generation. These differ in the proportion of the strongest and weakest strings in the current population that are selected. 

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W. Kandehner in B. M. Trost and I. Fleming, eds.. Comprehensive Organic Synthesis Selectivity, Strategy andEfftcieny in Modem Organic Chemisty, Vol. 6, Pergamon Press, Inc., Ehnsford, N.Y., 1991, pp. 485—599. 

SELECTED STRATEGIES EOR DETERMINING EMPLOYEES EXPOSURE TO AIRBORNE CHEMICALS 363... 

Selected strategies for determining employees exposure to airborne chemicals... 

Select strategy k Develop schedule Develop budget k Take corrective action k... 

H. Hiemstra, W. N. Speckamp, in Comprehensive Organic Synthesis Selectivity, Strategy Efficiency in Modern Organic Chemistry, B. M. Trost, I. Fleming, Eds., Vol. 2, p 1047, Perga-mon, Oxford 1991. 

B. M. Trost, editor-in-chief, Comprehensive Organic Synthes Selectivity, Strategy, and Efficiency in Modem Organic Chemistry, Pergamon Press, New York, 1991. 

The required speed for salmon selection is one salmon per second. To achieve this speed, projection data of a specific slice of a salmon should be used and the imaging capability is thus indispensable in developing a selection strategy for the projection data. 

CO3 species was formed and the X-ray structure solved. It is thought that the carbonate species forms on reaction with water, which was problematic in the selected strategy, as water was produced in the formation of the dialkyl carbonates. Other problems included compound solubility and the stability of the monoalkyl carbonate complex. Van Eldik and co-workers also carried out a detailed kinetic study of the hydration of carbon dioxide and the dehydration of bicarbonate both in the presence and absence of the zinc complex of 1,5,9-triazacyclododecane (12[ane]N3). The zinc hydroxo form is shown to catalyze the hydration reaction and only the aquo complex catalyzes the dehydration of bicarbonate. Kinetic data including second order rate constants were discussed in reference to other model systems and the enzyme carbonic anhy-drase.459 The zinc complex of the tetraamine 1,4,7,10-tetraazacyclododecane (cyclen) was also studied as a catalyst for these reactions in aqueous solution and comparison of activity suggests formation of a bidentate bicarbonate intermediate inhibits the catalytic activity. Van Eldik concludes that a unidentate bicarbonate intermediate is most likely to the active species in the enzyme carbonic anhydrase.460... 

The Number of Copies of a Set of Strings Made by Running Different Selection Strategies... 

Trost BM, Fleming I (1991) Comprehensive organic synthesis-selectivity, strategy and efficiency in modern organic chemistry. Elsevier, Oxford... 

While initial attempts of quantification of i-Az traces obtained in (single) molecule conductance studies suffered from rather poorly defined data selection strategies and limited current ranges [64, 116], most of the leading groups in the field focus now on the construction of all-data point conductance and plateau length... 

Birnie, D. P. 2001. Rational solvent selection strategies to combat striation formation during spin coating of thin films./. Mat. Res. 16 1145-1154. 

A number of challenges still remain before a flexible, high-yielding, and absolutely selective strategy for the synthesis of oligosaccharides on the solid support becomes available. Once these problems are solved, the construction of an automated oligosaccharide synthesizer will become feasible. 

Rodgers, David and W. T. Wipke. Artificial Intelligence in Organic Synthesis. SST Starting Material Selection Strategies. An Application of Superstructure Search, J. Chem. Inf. Comput. Sci., 24, (1984), pp. 71-81. 

Figure 3 A general positive and negative selection strategy for evolving aminoacyl-tRNA synthetase variants specific for an unnatural amino acid.

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