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In Praise of Fault Tolerant Systems " Fault attacks have recently become a serious concern in the smart card industry. " Fault Tolerant Systems " provides the reader with a clear exposition of these attacks and the protection strategies that can be used to thwart them. A must read for practitioners and researchers working in the field. " David Naccache,(More)
Simultaneous multithreading (SMT) increases processor throughput by allowing parallel execution of several threads. However, fully sharing processor resources may cause resource monopolization by a single thread or other misallocations, resulting in overall performance degradation. Static resource partitioning techniques have been suggested, but are not as(More)
Tiron (1,2-dihydroxybenzene-3,5-disulfonate), a nontoxic chelator of a variety of metals, is used to alleviate acute metal overload in animals. It is also oxidized to the EPR-detectable semiquinone radical by various biologically relevant oxidants, such as .OH, O2-., alkyl, and alkoxyl radicals. Since Tiron reacts with potentially toxic intracellular(More)
Many real-time systems employed in defense, space, and consumer applications have power constraints and high reliability requirements. In this paper, we focus on the relationship between fault tolerance techniques and energy consumption. In particular, we establish the energy efficiency of Application Level Fault Tolerance (ALFT) over other software-based(More)
The identification of radioprotectors is an important goal for those involved in radiation oncology and for those interested in the investigation of the mechanisms of radiation cytotoxicity. Recently, a new class of in vitro and in vivo radioprotectors, the nitroxides, has been discovered. The nitroxides are low-molecular-weight stable free radicals which(More)
In this paper we consider the problem of on-line scheduling of real-time tasks which receive a "reward" that depends on the amount of service received. In our model, tasks have associated deadlines at which they must depart the system. The task computations are such that the longer they are able to execute before their deadline, the greater the value of(More)
PURPOSE The purpose of this study was to screen several water soluble nitroxides for in vivo radioprotection, to evaluate their pharmacology, and to measure the effect of nitroxides on systemic blood pressure as a means of exploring the mechanism of in vivo radioprotection. METHODS AND MATERIALS A number of water soluble nitroxides were screened for in(More)