Ranjani Sridharan

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In recent literature it has been reported that Dynamic Power Management (DPM) may lead to decreased reliability in real-time embedded systems. The ever-shrinking device sizes contribute further to this problem. In this paper, we present a reliability aware power management algorithm that aims at reducing energy consumption while preserving the overall(More)
Primary-Backup (PB) model has been a widely used model for reliability in dual-processor real-time systems. In recent literature, there have been a few works focussing on minimizing energy consumption of periodic task sets executing on such systems. One of the major drawbacks of these works is that they ignore the effects of frequency-scaling on fault(More)
A unique photometer capable of measuring line intensities of <0.1% of the bright background continuum (5 x 10(6)/A) has been developed and successfully commissioned for the measurement of daytime OI 630.0-nm emission from the thermosphere. The photometer employs a low resolution (10(4)) Fabry-Perot etalon, temperature tuned narrowband (3-A) interference(More)
Due to the limited bandwidth of the wireless links in ad hoc networks, compressing the packet headers is an attractive method for efficient usage of the frequency spectrum and for performance enhancement. The objective of this work is to demonstrate the use of a novel end-to-end header compression technique for multi-hop wireless ad hoc networks. Our(More)
Due to the limited bandwidth of the wireless links in ad hoc networks, compressing the packet headers is an attractive method for efficient usage of the frequency spectrum and for performance enhancement. The objective of this work is to demonstrate the use of a novel end-to-end header compression technique for multi-hop wireless ad hoc networks. Our(More)
Real-time embedded systems are characterized by their need to complete task executions within their scheduled deadlines. Task scheduling could get complicated due to the occurrence of faults in such systems. Traditionally, researchers have accounted for faults by assuming a constant number of faults occuring in the system. However, such an assumption may(More)
In a Sodium Fast Reactor (SFR), due to the necessity to reduce the probability of occurrence of water ingress in the Steam Generator Unit (SGU), the availability of a reliable detection system is essential. Several concepts are available: a diffusion nickel membrane with a mass spectrometer is worthwile set-up on reactors. Nevertheless, it requires a(More)
This paper presents the details of simulation studies conducted to investigate the effects of multi-level scheduling decisions in a failure prone FMS. Initially, the configuration of the FMS under study has been established. This included production machines, buffers, loading and unloading stations, AGV's and operating rules. Six failure-repair situations(More)