Constraint solving in dynamic environments requires an immediate adaptation of the solutions if the constraint problems are changing. After any change the solutions have to be immediately adapted. Therefore, a wide range of incremental constraint solving algorithms for dynamic constraint satisfaction problems (DCSPs) are available. Some of these algorithms are based on Fr uhwirth's Constraint H...

We present an overview of algorithms and data structures for dynamic re nement/coarsening (adaptation) of unstructured FE meshes on loosely coupled parallel processors. We describe a) a parallel adaptation algorithm, b) an online parallel repartitioning algorithm based on mesh adaptation histories, c) an algorithm for the migration of mesh elements between processors, and d) an integrated objec...

The Dynamic Constraint Satisfaction Problem (DCSP) formalism has been gaining attention as a valuable and often necessary extension of the static CSP framework. Dynamic Constraint Satisfaction enables CSP techniques to be applied more extensively, since it can be applied in domains where the set of constraints and variables involved in the problem evolves with time. At the same time, the Case-B...

The LuaOrb project uses reflective features offered by the Lua programming language and by CORBA itself to create a platform that combines simplicity and flexibility in its support for dynamic behavior. In this paper we describe ongoing work on smart proxies. Smart proxies, based on simple QoS descriptions and event-based monitoring facilities, substitute traditional stubs, but automatically re...

Neural populations from various sensory regions demonstrate dynamic range adaptation in response to changes in the statistical distribution of their input stimuli. These adaptations help optimize the transmission of information about sensory inputs. Here, we show a similar effect in the firing rates of primary motor cortical cells. We trained monkeys to operate a brain-computer interface in bot...

Workload is found to be a critical factor driving human behavior in human-machine interactions in modern complex high-risk domains. This paper presents a dynamic workload adjustment feedback loop with a dynamic cognitive load (CL) adaptation model to control workload adjustment during human-machine interaction. In this model, physiological signals such as Galvanic Skin Response (GSR) are employ...

Current works address self-adaptability of software architectures to build more autonomous and flexible systems. However, most of these works only perform adaptations at configuration-level: a component is adapted by being replaced with a new one. The state of the replaced component is lost and related components can undergo undesirable changes. This paper presents a generic solution to design ...

Recomposable software enables a system to change its structure and behavior during execution, in response to a dynamic execution environment. This paper proposes an approach to ensure that such adaptations are safe with respect to system consistency. The proposed method takes into consideration dependency analysis for target components, specifically determining viable sequences of adaptive acti...

Programmers of relational database applications use software solutions (Hibernate, JDBC, LINQ, ADO.NET) to ease the development process of business tiers. These software solutions were not devised to address access control policies, much less for evolving access control policies, in spite of their unavoidable relevance. Currently, access control policies, whenever implemented, are enforced by i...

Long running applications often need to adapt due to changing requirements or changing environment. Typically, such adaptation is performed by dynamically adding or removing components. In these type of adaptations, components are often added to or removed from multiple processes in the system. As a result, during adaptation, the system may consist of both changed and unchanged processes, causi...