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Building dependable distributed systems from commercial off-the-shelf components is of growing practical importance. For both cost and production reasons, there is interest in approaches and architectures that facilitate building such systems. The AQuA architecture is one such approach; its goal is to provide adaptive fault tolerance to CORBA applications(More)
Building dependable distributed systems from commercial off-the-shelf components is of growing practical importance. For both cost and production reasons, there is interest in approaches and architectures that facilitate building such systems. The AQuA architecture is one such approach; its goal is to provide adaptive fault tolerance to CORBA applications(More)
  • Walter Douglas, Obal Ii, L Michael, Marcellin, H William, Sanders +32 others
  • 1998
As members of the Final Examination Committee, we certify that we have read the dissertation prepared by Walter Douglas Obal II entitled Measure-Adaptive State-Space Construction Methods and recommend that it be accepted as fulfilling the dissertation requirement for the Degree of Doctor of Philosophy Final approval and acceptance of this dissertation is(More)
The AQuA architecture provides adaptive fault tolerance to CORBA applications by repli-cating objects and providing a high-level method that an application can use to specify its desired level of dependability. This paper presents the algorithms that AQuA uses, when an application's dependability requirements can change at runtime, to tolerate both value(More)
Various methods of content-based video copy detection have been proposed to find video copies in a large video database. In this paper, we represent video feature obtained by global and/or local detectors as signature time series. We observe that the curves of such time series under various kinds of modifications and transformations follow similar trends.(More)
OBJECTIVE The major form of magnetic resonance imaging-defined white matter injury (WMI) comprises diffuse lesions where the burden of small necrotic foci (microscopic necrosis) is poorly defined. We hypothesized that myelination failure associated with diffuse WMI involves an aberrant injury response linked to arrested preoligodendrocyte (preOL) maturation(More)
Progress in the development of rat models of human periventricular white matter injury (WMI) has been hampered by uncertainty about the developmental window in different rodent strains that coincides with cerebral white matter development in human premature infants. To define strain-specific differences in rat cerebral white matter maturation, we analyzed(More)
OBJECTIVE Periventricular white matter injury (PWMI) is the major cause of cerebral palsy and cognitive impairment in prematurely born infants. PWMI is characterized by reductions in cerebral myelination and cerebrocortical volumes and is associated with secondary ventriculomegaly. In neonatal rodents, these features of PWMI can be induced by rearing in(More)