Taylor's fluctuation scaling (FS) has been observed in many natural and man-made systems revealing an amazing universality of the law. Here, we give a reliable explanation for the origins and abundance of Taylor's FS in different complex systems. The universality of our approach is validated against real world data ranging from bird and insect populations through human chromosomes and traffic i...

We investigate an effective and robust mechanism for detecting SMTP traffic anomaly. Our detection method cumulates the deviation of current delivering status from history behavior based on the leaky integrate-and-fire model to detect anomaly. The simplicity of our detection method is that the method requires neither the set of anomalies to be detected, nor the thresholds to be supplied by the ...

ost sports and recreational turfs are subjected to traffic stresses. A hidden but very important component of traffic stress is soil compaction, which is defined as the pressing together of soil particles into more dense mass. Soil compaction tends to be greater in the upper 50 to 75 mm of the root zone profile. Proneness to soil compaction tends to be greater (a) in finer textured soils such a...

When freeway traffic flow approaches capacity, minor disturbances or perturbations can cause unstable traffic streams to break down into queued or bottleneck conditions with the accompanying heavy congestion costs. As the traffic volume at which flow breaks down is uncertain, this research utilizes a stochastic capacity model to estimate congestion costs in terms of delays, fuel, and emissions....

The recent developments of multipath data transport protocols such as Multipath TCP allow end-systems to explore and share available resources within networks. Through dynamic load balancing over subflows these protocols ensure high levels of robustness to network failures and traffic overloads. In this paper we use fluid models to study the benefits that accrue when load is shared across subfl...

In this paper we develop a scheme which can help provide certain QoS via active measurement techniques. We send a probing stream, using the TCP or the UDP protocol, on a path with one bottleneck router. Several TCP and UDP connections (cross traffic) may be sharing the link on the router. We make measurements on the RTT and the throughput of the probing stream and do not assume any knowledge of...

This paper is devoted to modeling and simulation of traffic with integrated services at media gateway nodes in the next generation networks, based on Markov reward models (MRM). The bandwidth sharing policy with the partial overlapped transmission link is considered. Calls arriving to the link that belong to VBR and ABR traffic classes, are presented as independent Poisson processes and Markov ...

In this paper we analyze the traffic of telephone systems. Unlike classical traffic analysis where users are assumed to be connected uniformly, our proposed method employs a small-world scale-free network to model the behavior of telephone users. Each user has a fixed set of acquaintances with whom the user may communicate, and the number of acquaintances follows a power-law distribution. We sh...

In this study we examine statistical properties of traffic generated by the popular P2P IPTV application SopCast. The analysis aims at a better understanding of the mechanisms used by such applications and their impact on the network. Since the most popular P2P IPTV applications use proprietary unpublished protocols, we look directly at the generated traffic focusing on a single session analysi...

Coordinated traffic lights that implement green waves along major arterial roads are an increasingly used traffic management strategy for reducing travel times in urban context. The potential positive effect of this measure on emissions is often called upon as an additional support for its introduction. Although a smoother traffic flow will generally lead to lower air pollutant emissions, it wi...