In the past, real-time transaction processing systems have largely considered transaction characteristics such as deadlines and criticality to schedule/abort transactions, and to perform concurrency control and buuer management. Active database researchers have been involved in the development of system models that incorporate the Event-Condition-Action paradigm, examining issues related to the...

Active databases and real-time databases have gained increased interest in recent. Both active and real-time databases are considered as important technologies for supporting non-traditional applications such as computer integrated manufacturing (CIM), process control and air-traffic control. These applications are often event driven and need to react to events in a timely and efficient manner....

Real-time systems are systems where the correctness of the system not only depends on the logical result of a computation, but also when the result was produced. In complex real-time applications, real-time systems have to handle a signiicant amount of information which requires to be handled eeciently, motivating the need for incorporating real-time database management modules into the real-ti...

Back-to-back static synchronous compensator (BtBSTATCOM) consists of two back-to-back voltage-source converters (VSC) with a common DC link in a substation. This configuration extends the capabilities of conventional STATCOM that bidirectional active power transfer from one bus to another is possible. In this paper, VSCs are designed in quasi multi-pulse form in which GTOs are triggered only on...

Time-hopping combined with pulse position modulation has been the original proposal for ultra-wideband systems. Spread spectrum techniques for multiple access and interference suppression are being considered for ultra-wideband radio systems. A digital impulse radio receiver using direct-sequence spreading is proposed in the paper and the signal processing scheme is investigated. Performance me...

due to many important applications, the group iii-nitride semiconductors have recently attractedremarkable attention among semiconductor researchers and engineers. in this paper, we report on the impact of extrinsic and temporal carriers on the screening of polarization internal fields. the optical efficiency of gan/algan multiple quantum well (mqw) nanostructures were studied by means of photo...

the aim of the current review wasto study the existing knowledge about decision-making and to identify and describe validated training tools.a comprehensive literature review was conducted by using the following keywords: decision-making, emergencies, disasters, crisis management, training, exercises, simulation, validated, real-time, command and control, communication, collaboration, and multi...

This paper describes a vision processing architecture which together with a robotic camera platform and control subsystem comprise a multi-processor real-time system for research into active vision. Experimentation in time-critical aspects of the active vision paradigm over several years has demonstrated the flexibility of “pipe-groups” used as the building block in the system. The design of th...

Sensor data fusion is essential for environmental perception within smart traffic applications. By using multiple sensors cooperatively, the accuracy and probability of are increased, which crucial critical scenarios or under bad weather conditions. In this paper, a modular real-time capable multi-sensor framework presented tested to fuse on object list level from distributed automotive (camera...

Semi-active fluid viscous dampers as a subset of control systems have shown their ability to reduce seismic responses of tall buildings. In this paper, multi-objective optimization of the performance of this group of dampers in reducing the seismic responses of buildings is studied using multi-objective genetic algorithms. For numerical example, two 7 and 18 stories buildings are chosen and mod...