In this paper we deene an image model called MSEC (Multi-Scale Edge Compensation) and implement an image compression system based on MSEC. The idea is to represent the image by its multi-scale primal sketch and the background. The experimental results are positive; some important features of MSEC are proved.

Recent studies suggest that 1) electrically induced fibrillation and defibrillation involve prolongation of refractoriness by the shock in addition to stimulation and 2) biphasic waveforms are more efficient for defibrillation than are comparable monophasic waveforms. The purpose of this study was to compare prolongation of action potential duration at 50% repolarization by monophasic and bipha...

It has been shown that the maximal rate of left ventricular (LV) relaxation is impaired in patients with coronary artery disease (CAD) under basal conditions. To test the hypothesis that this impaired LV relaxation could be related to viable but metabolically abnormal myocardium, we studied the time course of isovolumic LV pressure fall in 21 patients with CAD and in 13 control subjects under b...

It has been shown that the maximal rate of left ventricular (LV) relaxation is impaired in patients with coronary artery disease (CAD) under basal conditions. To test the hypothesis that this impaired LV relaxation could be related to viable but metabolically abnormal myocardium, we studied the time course of isovolumic LV pressure fall in 21 patients with CAD and in 13 control subjects under b...

Groundwater is part of the hydrological cycle located below earth's surface in pores and crevices rocks soil. Water scarcity increasing around world need for water presence due to growing demands several fields. Geologically, Sekaran District composed alluvium formations where this formation consists kerakal, gravel, silt sand, clay, local fragments fossil shells mud. This study was conducted d...

Declines in cottonwood (Populus spp.) recruitment along alluvial reaches of large rivers in arid regions of the western United States have been attributed to modified flow regimes, lack of suitable substrate, insufficient seed rain, and increased interspecific competition. We evaluated whether and how these factors were operating during 1993–1996 to influence demographics of Fremont cottonwood ...

Thresholds for the perception of red and green or for blue and yellow, presented in two-color mixtures, were measured at exposure durations of 20, 50, 100, and 300 msec at the fovea and 6° above the fovea, at a constant luminance of 0.12 ft-L. Median foveal thresholds for red and green were constant from 300 to 50 msec and decreased slightly at 20 msec; at 6°, sensitivity to both red and green ...

His bundle electrograms were recorded in 348 patients aged 2 months to 24 years following routine diagnostic cardiac catheterization. Among 41 children found to be free of anatomic or hemodynamic abnormality the following mean values were obtained: P-H interval, 93.4 ± 15.3 msec; P-A time, 21.2 ± 7.1 msec; A-H interval, 72.2 ± 15.9 msec; and H-V interval, 39.8 ± 5.2 msec. The remaining 307 pati...