This paper is based on a dynamic replication control strategy for minimizing communications costs. In dynamic environments where the access pattern to share resources can not be predicted statically, it is required to monitor such parameter during the whole lifetime of the system so as to adapt it to new requirements. The shared-object management system is implemented in a centralized manner in...

As CMOS feature sizes venture deep into the nanometer regime, wearout mechanisms including negative-bias temperature instability and timedependent dielectric breakdown can severely reduce processor operating lifetimes and performance. This paper presents an introspective reliability management system, Maestro, to tackle reliability challenges in future chip multiprocessors (CMPs) head-on. Unlik...

The changes that can be made to a document throughout its lifetime are limitless. Temporal management of documents with multiple versions is a complex area of research that has risen from the need to preserve information. Today s technologydriven society is rapidly moving towards web environments and using XML as the format of choice of information representation and exchange. The proposed solu...

Resource information managers typically use fixed approaches to manage information. However fixed solutions to information management are complicated by the fact that computing environments are not all the same and even within a single computing environment the characteristics of the information and its access patterns may change over the lifetime of the system. These changes motivate this work...

Various non deterministic aspects of object creation in database trans formations are discussed from a modeling as well as from an expressive

The authors propose the use of two new standardized measures of risk, the standardized lifetime risk and the standardized number of years of life lost. These measures maintain the advantages of standardized rates but are more readily understood without special training. In this paper, standardizing weights based on 1992 data from England and Wales are provided, and the new measures are illustra...

Ada ‘95 does not provide for a constructor mechanism with parameters for initializing newly created objects. The package Ada.Finalization provides an initialize procedure which is automatically called at object creation time, but that procedure takes only one argument, i.e. the object being operated upon. This is hardly useful, since initialization of any kind usually requires additional inform...

Since at least the dawn of history, human beings have been interested in their own origins and in the make-up of their world. Most cultures, for example, have "origins" stories in their religions and myths to explain what and who we are. But until what we call "science" gained a foothold, no explanation provided verifiable conclusions. Only with the advent of the scientific method and the ever-...

It is proven that any spherically symmetric spacetime that possesses a compact Cauchy surface and that satis es the dominant-energy and non-negative-pressures conditions must have a nite lifetime in the sense that all timelike curves in such a spacetime must have a length no greater than 10max (2m), where m is the mass associated with the spheres of symmetry. This result gives a complete resolu...