We study the influence of third-order spherical aberration on the group velocity dispersion and on the propagation time delay of a plane pulse that is focused by a thin lens. Applications in refractive-diffractive propagation time delay compensation systems and in Gaussian temporal-shaped pulses are analyzed.

Internet worm attacks reduce network security and cause economic losses. The use of a quarantine strategy is prominent in defending against worms, and it has been applied to various worm propagation models. Although theoretical analysis suggests that worms must get eliminated under quarantine, such a result does not appear in a real network. The time delay considered in this paper, which is cau...

Vehicular networks are organized with high-mobility vehicles, which are a challenge to key agreement and secured communication among vehicles; hence, efficient cryptography schemes for lightweight ciphers are essential. Many security schemes for vehicular networks particularly take the secure propagation of traffic-related information into account. Group communication is desirable in vehicular ...

There are two functionally important factors in signal propagation in a brain structural network: the very first synaptic delay-a time delay about 1ms-from the moment when signals originate to the moment when observation on the signal propagation can begin; and rapid random fluctuations in membrane potentials of every individual neuron in the network at a timescale of microseconds. We provide a...

This paper addresses the issues of power dissipation and propagation delay in CMOS buffers driving large capacitive loads and proposes a CMOS buffer design for improving power dissipation at optimized propagation delay. The reduction in power dissipation is achieved by minimising short circuit power and subthreshold leakage power which is predominant when

Propagation delays are intensively used for Structural Health Monitoring or Sensor Network Localization. In this paper, we study the performances of acoustic propagation delay estimation between two sensors, using sources of opportunity only. Such sources are defined as being uncontrolled by the user (activation time, location, spectral content in time and space), thus preventing the direct est...

In this paper, A low propagation delay Birkhoffvon Neumann (LB-BvN) 16 × 16 switch fabric IC is proposed for feedback-based switch systems is designed. The next generation terabit switches are constructed from the 16×16 switch. For a feedback-based switch system, throughput significantly reduces due to the long propagation delay of the switch module of system. To overcome propagation delay prob...

This technical report explores the degree of accuracy to which the propagation delay of WLAN packets can be measured using today’s commercial, inexpensive equipment. The aim is to determine the distance between two wireless nodes for location sensing applications. We conducted experiments and measured the time difference between sending a data packet and receiving the corresponding immediate ac...

Many of the existing methods for evaluating an airline’s on-time performance are based on flight-centric measures of delay. However, recent research has demonstrated that passenger delays depend on many factors in addition to flight delays. For instance, significant passenger delays result from flight cancellations and missed connections, which themselves depend on a significant number of facto...

Multiple-valued logic (MVL) application in the design of digital devices opens additional opportunities. In this paper we have designed Quaternary latch & quaternary multiplexer. Multiplexer is designed with different threshold voltages. All the circuits were simulated with the Spice tool using TSMC 250 nm technology and have shown improvements in performance and power consumption and propagati...