abstract background: prevention of traffic accidents requires the exact understanding of the risk factors. analysis of these factors requires the collection of authentic and standard data. the aim of this study was to compare the data elements of traffic accidents related to the police, the pre-hospital and hospital care in iran with europe and america standards. methods: this descriptive cross...

Measurement and analysis of real traffic is important to gain knowledge about the characteristics of the traffic. Without measurement, it is impossible to build realistic traffic models. It is recent that data traffic was found to have self-similar properties. In this thesis work traffic captured on the network at SICS and on the Supernet, is shown to have this fractal-like behaviour. The traff...

Network traffic monitoring and analysis are essential for effective network operation and resourcemanagement. In particular, multidimensional analysis for long-term traffic data is necessary for comprehensive understanding of the traffic trend and effective quality-of-service provision considering the extremely dynamic behavior of the current Internet, where various types of traffic occur from ...

The SSL protocol, an application-layer mechanism widely used for encrypted Web browsing, was not designed to address traffic analysis attacks. We investigate the threat to privacy posed by such attacks and consider possible defenses. We implement a prototype of a traffic analysis attack and employ it to identify the pages visited by users browsing a Web site. Numerical models and simulations ar...

In this paper we introduce the measurement architecuture of an application for the Virtual Traffic Laboratory. We have seamlessly integrated the analyses of aggregated information from simulation and measurements in a Matlab environment in which one can concentrate on finding the dependencies of the different parameters, select subsets in the measurements, and extrapolate the measurements via s...

Video might constitute a sizeable part of the traffic in future broadband networks. It is consequently important to consider the requirements of video and its characteristics in order to properly design and dimension the networks. Despite a massive amount of research on video source models and multiplexing performance, there are few results that are applicable to real sources and networks. For ...

In the present study, the social linkages of street-involved youth and correlates of infection with chlamydia and gonorrhea are explored. This is the first study to assess the social linkages of streetinvolved youth using RDS. Eleven street-involved youth aged 14 to 24 were selected as seeds to recruit their peers into the study using RDS (N=169). Study staff administered a questionnaire, obtai...

The popularity of applications changes fast in current Internet and the result is that the characteristics of Internet traffic also goes over a rapid change. In this paper we present the main characteristics of three popular applications based on actual measurements taken from a commercial network. BitTorrent as one of the leading P2P file sharing applications, YouTube as the head of video shar...

-MapReduce is a programming model, which can process the large set of data and produces the output. The MapReduce contains two functions to complete the work, those are Map function and Reduce function. The Map function will get assign fragmented data as input and then its emit intermediate data with key and send to this intermediate data with key to the Reducer, where Reducer will get the inpu...

In this paper, a reinforced concrete(RC) bridge built in an interchange, in the city of Kerman (a city located in south of Iran) is examined by the Structural Health Monitoring (SHM) system. During the construction of this bridge such as; the main beams, slab, and retaining walls, some Electrical Strain Gauges were mounted on the main reinforcements at different locations within the body of thi...