The investigation of weather effects on traffic intensity is important from a road safety point of view, because traffic intensity is noted as the first and primary determinant of traffic safety. Next to traffic safety, weather conditions affect other predominant traffic variables, namely traffic demand and traffic flow. Therefore the main objective of this study is the identification and compa...

We demonstrate that Ethernet local area network (LAN) traffic is statistically self-similar, that none of the commonly used traffic models is able to capture this fractal behavior, that such behavior has serious implications for the design, control, and analysis of high-speed, cell-based (B-ISDN) networks, and that aggregating streams of such traffic typically intensifies the selfsimilarity ("b...

We propose a set of metrics for efficient botnet detection. The proposed metrics captures the unique group behavior that is inherent in bot communications. Our premise for proposing group behavior metrics for botnet detection is that, group behavior observed in botnets are unique and this unique group behavior property is inherent in the botnet architecture. The proposed group behavior metrics ...

Studies of the relationships between property rights and technology adoption are complicated in several respects. First, there are challenges involved in defining and measuring property rights and tenure security. Second, there are several different valid purposes for undertaking such studies and each purpose may require a different approach. Third, there are a number of difficult theoretical a...

The Brazilian public budget for health was R$ 53 billion (approximately U$ 20 billion) in 2003. What share of this total was to treat victims of violence? It is impossible to estimate that proportion directly, due to limitations in the available data. This paper proposes a methodology to estimate the cost of violence for the public health system, using data from the Unified National Health Syst...

The optimizat ion of traffic flow on roads and highways of modern industrialized countries is key to their economic growth and success. Besides, the reduction of traffic congestions and jams is also desirable from an ecological point of view as it yields a contribution to climate protection. In this art icle, we stick to a microscopic traffic simulation model and interpret the task of traffic f...

In the last decade, the Internet emerged undoubtedly as the key component for commercial and personal communication. The success of the Internet is mainly based on its versatility and flexibility, allowing for the development of network applications ranging from simple text based utilities to complex systems for e-commerce and multi-media content. The ongoing expansion of the Internet is the ca...

The main purpose of this study is to identify the relationship between Human Factors, Mechanical/Vehicle Factors, Environmental/Road Factors and Road Safety. Ten traffic agent officers (Comprising Road Safety Corps, Road Safety Marshal, State Security Service Officers, Police Traffic officers and National Union of Road Transport Workers (NURTW) officers) were selected as a sample, survey questi...

In this paper an imaging system for bus traffic conflict investigation is presented. The system employs geo-referenced stereo sequences and tracking procedure to provide much greater information regarding pre-crash and crash events than what is currently available. The exploitation of the traffic conflict technique potentiality as a surrogate safety measure could constitute an effective tool in...

This document requests one Differentiated Services Code Point (DSCP) from the Internet Assigned Numbers Authority (IANA) for a class of real-time traffic. This traffic class conforms to the Expedited Forwarding Per-Hop Behavior. This traffic is also admitted by the network using a Call Admission Control (CAC) procedure involving authentication, authorization, and capacity admission. This differ...