Shifting Up and Back

Shifting the Focus of Survivability: Back to the Basics

This research introduces a new paradigm to survivability. The philosophy of the approach is to consider a hierarchical solution space, where survivability features for speci c attacks are applied at the lowest suitable level. Whereas the hierarchy as a whole is assumed to represent a comprehensive solution, each level is limited in scope to deal with attacks which have speci c characteristics. ...

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Shifting up Java RMI from P2P to Multi-Point

In this paper we describe how to realize a Java RMI framework supporting multi-point method invocation. The package we have realized allows programmers to build groups of servers that could provide services in two different modes: fault tolerant and parallel. These modes differ over computations failure. Our extension is based upon the creation of entities which maintain a common state between ...

Shifting Sugars and Shifting Paradigms

No organism lives in a constant environment. Based on classical studies in molecular biology, many have viewed microbes as following strict rules for shifting their metabolic activities when prevailing conditions change. For example, students learn that the bacterium Escherichia coli makes proteins for digesting lactose only when lactose is available and glucose, a better sugar, is not. However...

Shifting Up Reflection from the Implementation to the Analysis Level

Traditional methods for object-oriented analysis and modeling focus on the functional specification of software systems, i.e., application domain modeling. Non-functional requirements such as faulttolerance, distribution, integration with legacy systems, and so on, have no clear collocation within the analysis process, since they are related to the architecture and workings of the system itself...