Considering that time delay (delay) is a common phenomenon in biological systems, reaction-diffusion equations with are widely used to study the dynamic mechanism of those which can induce loss stability and degradation performance. In this paper, taking into account inhomogeneous distribution species space be considered as random network, pattern dynamics prey-predator network system diffusion...

This study examined the use of a progressive-delay schedule of reinforcement to increase self-control and decrease disruptive behavior in children with autism. When initially given the choice between an immediate smaller reinforcer and a larger delayed reinforcer, all participants chose the smaller reinforcer. When access to the larger reinforcer required either no activity or engaging in a con...

Large inter-die and intra-die process variations result in significant uncertainty in delay of circuits. Large delay variations may lead to parametric/functional failures. In this paper we propose a novel leakagevariation-tolerant online current monitor, namely leakage canceling current sensor, to detect completion of operations in logic blocks. The current monitor is applied to self-timed logi...

We consider a nonlinear difference equation with a time delay which represents the simplest possible discretely updated neural network. We show that provided that the integral time delay is large enough, this self feedback system exhibits a huge number of asymptotically stable periodic orbits. Therefore, such a network has potential for associative memory and pattern recognition.

Biorthogonal modulated "lter banks, when compared to paraunitary ones, provide the advantage that the overall system delay can be chosen independently of the "lter length, thus allowing to design low delay "lter banks. They have recently been studied by several authors. In this paper, we connect two di!erent design methods, namely the quadratic constrained least-squares optimization and the pri...

This In this paper, a new self-tuning control scheme is developed for a class of time-delay chaotic systems. It is implemented by using fuzzy sliding-mode control with self-tuning method. The adjustment of the membership functions are restricted within a stable range derived from a stability analysis. The adaptation laws are derived using a Lyapunov stability analysis, so that both system track...

This paper reports the measurement and analysis of wideband radio channel in urban propagation environment. RMS delay spread values are evaluated as well as the coherence bandwidth of the channel is derived by the frequency correlation function for 0.9 correlation. Furthermore, delay windows and signal to self-interference ratios are reported. Mean delay spread was found 0.353 μs and 2.061 μs f...

We found that, at the focus of a chromatic lens, a laser pulse with a self-modulated phase can be shortened due to the radial dependence of the group delay imposed by the lens. Normally, this group delay stretches a short pulse into a long pulse by spreading the arrival time of the pulse at the focus. However, for a pulse with a self-modulated phase, it causes the fields with different phases t...