Traffic and Travel Information (TTI) systems in use today are based on a centralized structure. Sensors along the roadside monitor traffic density and transmit the results to a central unit where a situation analysis of the global traffic scenario is performed. The resulting traffic information is made available to the drivers via broadcast service or alternatively on demand via cellular phone....

Intelligent Optical Networks (IONs) allow setting up or tearing down lightpaths dynamically. The logical topology in multi-layer networks (such as IP-over-OTN scenarios) is supported by these lightpaths, and thus dynamically configurable. Consequently, traffic engineering functionality is extended with cross-layer capabilities, leading to multi-layer traffic engineering (MTE). This paper explai...

Computer security has become a major problem in our society. In particular, computer network security is concerned with preventing the intrusion of an unauthorized person into a network of computers. An intrusion detection system (IDS) is a tool to monitor the network traffic and users’ activity with the aim of distinguishing between hostile and non-hostile traffic. Snort is an IDS available un...

Distributed top-k query processing has become an essential functionality in a large number of emerging application classes like Internet traffic monitoring and Peer-to-Peer Web search. This work addresses efficient algorithms for distributed topk queries in wide-area networks where the index lists for the attribute values (or text terms) of a query are distributed across a number of data peers.

purpose: this study investigated functionality statues and surgical outcome of patients with cervical spondylotic myelopathy (csm) contains cervical herniated disc (chd) and cervical spinal stenosis (css) based on the japanese orthopedic association cervical myelopathy evaluation questionnaire (joacmeq). methods: this was a prospective clinical study a sample of cases with csm. patient’s functi...

Today, an increasing number of customers subscribes for a high bandwidth internet access. But not only speed is demanded. Reliability, availability, and security move more and more into the customers focus. Carriers and Internet Service Providers, too, have increasing requirements derived from new services they want to offer to their customers or use themselves. A hardware solution is presented...

Mathematical models of street traffic allowing assessment the importance their individual segments for functionality system are considered. Based on methods cooperative games and reliability theory a suitable measure is constructed. The main goal to analyze assessing (rank) road fragments, including functions. relevance these elements effective accessibility entire will be

Relationships between bridge damage and the resulting loss of functionality of the bridge are critical to assessing the impact of an earthquake event on the performance of the transportation network. This study addresses this data need by use of a Web-based survey of central and southeastern U.S. Department of Transportation bridge inspectors and officials. Results of the 28 responses are analy...

A GROWING NUMBER OF COMputer-vision systems have emerged for traffic analysis and control. Increased traffic, along with steady efforts to improve driver security, have encouraged the development of sophisticated video-based systems, providing statistical measures of traffic flow for actual traffic information on variable message signs. Investigations show that VMS reduce traffic jams, thus min...

Low-latency anonymous communication networks, such as Tor, are geared towards web browsing, instant messaging, and other semi-interactive applications. To achieve acceptable quality of service, these systems attempt to preserve packet interarrival characteristics, such as inter-packet delay. Consequently, a powerful adversary can mount traffic analysis attacks by observing similar traffic patte...