This paper describes an experimental investigation of steady-state resonant waves. Several co-propagating short-crested wave trains are generated in a basin at the State Key Laboratory of Ocean Engineering (SKLOE) in Shanghai, and the wavefields are measured and analysed both along and normal to the direction of propagation. These steady-state resonant waves are first calculated theoretically under the exact resonance criterion with sufficiently high nonlinearity, and then are generated in the basin by means of the main wave components that contain at least 95 % of the wave energy. The steady-state wave spectra are quantitatively observed within the inherent system error of the basin and identified by means of a contrasting experiment. Both symmetrical and anti-symmetrical steady-state resonant waves are observed and the experimental and theoretical results show excellent agreement. These results offer the first experimental evidence of the existence of steady-state resonant waves with multiple solutions.
We discuss a scheduling problem for a twomachine robotic flow-shop with a bounded intermediate station and robots which is realistic in FMCs (flexible manufacturing cells). The problem asks to minimize the total weighted completion time. It is NP-hard. In this paper, we propose a heuristic algorithm based on GA (Genetic Algorithm) which is applicable to the problem, and which allows not only permutation, but also non-permutation schedules, because the latter has possibility to improve the former for this objective function. It is shown by numerical experiment that the proposed method is more effective than existing heuristics, and that there are some situations where the non-permutation scheduling is better than the permutation one.
Nineteen polymorphic microsatellites isolated from a partial genomic DNA library of Sarcocheilichthys sinensis enriched for CA repeats were developed. Variability was tested on 48 unrelated individuals collected from Jiangsu province, China. Observed heterozygosity ranged from 0.200 (Ss236) to 1.00 (Ss223, Ss224), whereas the expected heterozygosity ranged from 0.213 (Ss232) to 0.939 (Ss224). Shannon's information index ranged from 0.405 (Ss236) to 2.988 (Ss224). Sixteen of the 19 microsatellites conformed to Hardy-Weinberg equilibrium. These microsatellites can be used for the evaluation of genetic parameters in populations to supply valuable information for conservation management.
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