The presence of non-simultaneous maskers can result in strong impairment in auditory intensity resolution relative to a condition without maskers, and causes a complex pattern of effects that is difficult to explain on the basis of peripheral processing. We suggest that the failure of selective attention to the target tones is a useful framework for understanding these effects. Two experiments ...

A very simple definition of Ising dusters was introduced by Rieger which joins spins with an average individual magnetization opposite to the global magnetization. Involving percolation methods we get very good agreements between the critical temperatures and the percolation thresholds of diluted and undiluted Ising systems in various dimensions.

Widely varying estimates of the number of discernible object colors have been made by using various methods over the past 100 years. To clarify the source of the discrepancies in the previous, inconsistent estimates, the number of discernible object colors is estimated over a wide range of color temperatures and illuminance levels using several chromatic adaptation models, color spaces, and col...

This study investigated the changes in cardiorespiratory response and running performance of 9 male "Talent Identification" (TID) and 6 male Senior Elite (SE) Spanish National Squad triathletes during a specific cycle-run (C-R) test. The TID and SE triathletes (initial age 15.2 ± 0.7 vs. 23.8 ± 5.6 years, p = 0.03; V(O2)max 77.0 ± 5.6 vs. 77.8 ± 3.6 ml · kg(-1) · min(-1), nonsignificant) underw...

The adaptable lymphocyte hypothesis is identified as a possible source of inspiration for artificial immune systems. Based on a number of qualitative investigations we identify some properties of a theoretical system (the tunable activation threshold model and excitability) that could be applicable in an engineering domain. An example is shown of how we could exploit these properties.

drought is a complex natural phenomenon that can occur in any climate. hydrologic drought in the river flow of arid and semi-arid areas causes serious shortages, threatens the quality of life, and impacts on the economy. understanding this feature is then essential for the management of water resources. hydrologic drought in the sense of deficient river flow is defined as the periods that river...

in this paper, a method based on binary-coded genetic algorithm is proposed to explore an optimization method, for obtaining an optimal elliptical tank. this optimization method enhances the rollover threshold of a tank vehicle, especially under partial filling conditions. minimizing the overturning moment imposed on the vehicle due to c.g. height of the liquid load, lateral acceleration and ca...

variations in lighting are a problem for visual systems. in the current research, a new thresholding method using a 3d euclidian elliptical surface was defined and applied for plant detection purposes. the results showed that this method had lower type i error, type ii error, total error and mean square error compared with those of conventional segmentation methods. the method was evaluated for...

Resumen Introduccion y objetivos El objetivo de este estudio es valorar si los pacientes que han sufrido una fractura cadera tienen mortalidad mas alta la esperada. Material metodos Se realizo un prospectivo, observacional donde se toma como muestra con a lo largo ano, cuya cifra fue 284 el seguimiento minimo 2 anos. La edad media estos 84,26 anos, siendo 21,48% (61/284) varones 78,5% (223/284)...