Inspiratory load compensation is impaired in patients with obstructive sleep apnea (OSA), a condition characterized by hypoxia during sleep. We sought to compare the effects of sustained hypoxia on ventilation during inspiratory resistive loading in OSA patients and matched controls. Ten OSA patients and 10 controls received 30 min of isocapnic hypoxia (arterial oxygen saturation 80%) and normo...

Deftection of oriented ftakeboards, random ftakeboards, and southern pine plywood was evaluated for small size bending specimens and concentrated loads applied to panels nailed on framing lumber. The ftakeboards con~ed a mixture of southern hardwoods and pine; the plywood was 3-ply l/2-inch and 4-ply ~-inch construction. Tests of both panel ~ons, all load levels and RH cycles showed plywood ben...

Reliability models of systems with common cause failure are developed through system-level load-strength interference analysis. Based on the statistic meaning of random load action and the failure mechanism of systems under repeated random load, the effect of multiple action of random load on reliability is studied. The probability cumulative distribution function and the probability density fu...

Pseudo random numbers are used in a number of areas such as cryptography and scientific and statistical simulation. Random numbers are crucial in statistics to obtain a uniform distribution for the prior knowledge and integration of Monte Carlo methods in statistical signal processing. In this paper, we propose a new random number generator using permutation matrices. This algorithm has three m...

In this paper, we analyze the effect of stress-fiber inclusion on the stiffness of an actin random network. To do this, use a discrete random network model to analyze the elastic response of this system in terms of apparent Young’s modulus. First, we showed that for a flat-ended cylindrical AFM indenter the total indentation force has a linear relation with the indentation depth and the indente...

Several types of cyclic stress were applied to specimens made an extruded magnesium alloy, AZ31, elucidate twinning, detwinning, and fatigue crack initiation mechanisms by electron backscattered diffraction analysis. In both the texture random orientation, twinning occurred under compressive exceeding yield strength. Detwinning only in upon subsequent application tensile less than strength mono...