Delays between contrast agent (CA) arrival at the site of vascular input function (VIF) sampling and the tissue of interest affect dynamic contrast enhanced (DCE) MRI pharmacokinetic modelling. We investigate effects of altering VIF CA bolus arrival delays on liver DCE MRI perfusion parameters, propose an alternative approach to estimating delays and evaluate reproducibility. Thirteen healthy v...

Determining causes of aviation delay is essential for formulating and evaluating approaches to reduce air traffic delays. An analysis was conducted of large weather-related delays at Newark International Airport (EWR), which, located in the heart of the congested northeast corridor of the United States, is an airport with a significant number of delays. Convective weather and reduced ceiling an...

This paper is concerned with the stability analysis problem of bidirectional associative memory neural networks with time-varying delays and leakage delays. A new sufficient stability criterion is derived for the addressed system in terms of linear matrix inequalities by constructing a Lyapunov-Krasovskii functional and employing delay decomposition approach. Finally, the effectiveness of deriv...

The aim of this paper is to present one type of pole assignment controller that is based on the analysis of optimal settings for the double integrator system. It takes into account parasitic delays in the control structure and constraints imposed on the control signal. The whole design is illustrated on two examples. Key-Words: Pole assignment control, constraints, saturation, double integrator...

In this paper, periodic solution of impulsive Lotka-Volterra recurrent neural networks with delays is studied. Using the continuation theorem of coincidence degree theory and analysis techniques, we establish criteria for the existence of periodic solution of impulsive Lotka-Volterra recurrent neural networks with delays.

In this paper, a Hopfield neural network with neutral time-varying delays is investigated by using the continuation theorem of Mawhin’s coincidence degree theory and some analysis technique. Without assuming the continuous differentiability of time-varying delays, sufficient conditions for the existence of the periodic solutions are given. The result of this paper is new and extends previous kn...

As designers strive to build systems on chips with ever diminishing device sizes, and as clock speeds of gigahertz and above are being contemplated, the limitations of synchronous circuits are beginning to surface. Consequently, there has been a renewed interest in asynchronous design techniques that use judicious timing assumptions to obtain fast circuits with low hardware overhead. However, t...