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Numerous studies have examined ramp-metering control to relieve highway congestion. Unlike previous research, this paper presents two different optimization problems for maximum system capacity over a highway corridor, using both a time-gap based traffic model describing traffic flow and the limited traffic data measured by existing field facilities. Our proposed algorithms are coordinated ramp-metering...
A time-domain operational method for the dynamic analysis of force-free Linear Time-Invariant (LTI) lumped-parameter electrical systems is presented. Starting from the state model of the system, a purely time-domain technique for obtaining the matrix exponential (state-transition matrix) has been developed. This approach preserves the time-domain identity of all the network variables (unlike the transformational...
The best replica selection problem is one of the important aspects of data management strategy of data grid infrastructure. Recently, rough set theory has emerged as a powerful tool for problems that require making optimal choice amongst a large enumerated set of options. In this paper, we propose a new replica selection strategy using a grey-based rough set approach. Here first the rough set theory...
It is known that breakdown strength of SF6 is extremely susceptible to non-uniform electric fields and metallic particle contamination, these effects lead to lower the breakdown voltage. Furthermore, from the view point of environmental protection, as SF6 has strong greenhouse effect, the use of SF6 will be strong controlled. Thus, it is needed to develop the alternative dielectric gas or gas mixtures...
This paper presents the application of three intelligent optimization techniques for optimal design and analysis of a dc-dc converter with synchronous rectification which is often used in battery charge/discharge circuits in dc uninterruptible power supply systems. Converter models for simulation are designed for the forward and backup modes of operation. The results are analyzed and compared with...
Epilepsy is a chronic neurological disorder characterized by recurrent, unprovoked seizures. This study deals with a preliminary investigation to detect epileptic components in the electroencephalogram (EEG) waveform, which results in a reduction of analysis time by the expert neurologist. As an alternative to the Fast Fourier Transform (FFT) spectral analysis approach, an Auto Regressive (AR), a...
We address the problem of efficient online computation of the speeds of different cores of a multi-core processor to maximize the throughput (which is expressed as a weighted sum of the speeds), subject to an upper bound on the core temperatures. We first compute the solution for steady-state thermal conditions by solving a linear program. We then present two approaches to computing the transient...
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