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Urban transportation system is a large complex nonlinear system. It consists of surface-way networks, freeway networks, and ramps with a mixed traffic flow of vehicles, bicycles, and pedestrians. Traffic congestions occur frequently, which affect daily life and pose all kinds of problems and challenges. Alleviation of traffic congestions not only improves travel safety and efficiencies but also reduces...
In order to accommodate different requirements of reliable multicast applications, the real-time reliable multicasting support framework must possess generic yet rich features for detecting and reporting message losses with tight latency bounds. One highly promising concrete formulation of a multicast framework is the Real-time Multicast & Memory Replication Channel (RMMC) scheme. In this paper,...
Real-time pose measurement for the terminal tool of a virtual axis machine tool is still one of obstacles to achieve high-precision control and industrialization of virtual axis machine tool in the field of digital control machining. The pose measurement of the tool for a 6-DOF virtual axis machine tool is studied in this paper. Firstly, the kinematics analysis of the virtual axis machine tool is...
Network-based real-time computing applications which require tightly bounded end-to-end delays have been increasing at a steady rate in recent years. A messaging layer that yields tight bounds on the latencies in detecting message losses and enables the application layer to initiate a timely recovery action has thus become highly desirable. In this paper we present a new reliable real-time messaging...
Common rail based direct injection system is critical for improving the fuel economy and emissions of both gasoline and diesel engines. The fuel pressure pulsation inside the common rail is induced by high-speed flows in and out of the common rail. This phenomenon could adversely affect the accuracy of injected fuel quantities and flow rates. So it is desirable to compensate for the pressure pulsations...
In spite of the progress made in the past decade, the quality-of-services (QoS) of the video-conferencing (VC) systems involving four or more sites need to be improved much further in order to attract a large number of users. One of the key issues in enabling high-level QoS in multi-party (MP) VC systems is the accurate maintenance of the temporal relationship among media units (MUs) from creation...
Many real-time distributed computing (RTDC) applications have stringent action timing requirements as well as tight security-enforcement requirements. Integration of security enforcement mechanisms into advanced component-based RTDC schemes has been recognized as an important research topic in recent years. In this paper we propose the first formal extension of the Time-triggered Message-triggered...
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