Volume 2, Issue 6 (2006) | Journal of Computer Science

Reliability Evaluation of Distributed Computer Systems Subject to Imperfect Coverage and Dependent Common-Cause Failures

Liudong Xing — 2006-09-28

Journal of Computer Science, Published online: 28 September 2006; doi:10.3844/jcssp.2006.473.479

Imperfect coverage (IPC) occurs when a malicious component failure causes extensive damage due to inadequate fault detection, fault location or fault recovery. Common-cause failures (CCF) are multiple...

Autonomic and Dependable Computing: Moving Towards a Model-Driven Approach

Yuan S. Dai — 2006-06-30

Journal of Computer Science, Published online: 30 June 2006; doi:10.3844/jcssp.2006.496.504

The rapidly increasing complexity of computing systems is driving the movement towards autonomic systems that are capable of managing themselves without the need for human intervention. Without autono...

Optimal Rejuvenation Scheduling of Distributed Computation Based on Dynamic Programming

Hiroyuki Okamura — 2006-06-30

Journal of Computer Science, Published online: 30 June 2006; doi:10.3844/jcssp.2006.505.512

Recently, a complementary approach to handle transient software failures, called software rejuvenation, is becoming popular as a proactive fault management technique in operational software systems. I...

Predictive Autonomicity of Web Services in the MAWeS Framework

Emilio P. Mancini — 2006-06-30

Journal of Computer Science, Published online: 30 June 2006; doi:10.3844/jcssp.2006.513.520

In Web Services designs classical optimization techniques are not applicable. A possible solution to guarantee critical requirements is the use of an autonomic architecture, able to auto-configure and...

Autonomic Middleware Services for Just-In-Time Grid Services Provisioning

Wail M. Omar — 2006-06-30

Journal of Computer Science, Published online: 30 June 2006; doi:10.3844/jcssp.2006.521.527

The advent of widespread distributed computing environment, such as information systems and computational grids computing has enabled a new generation of applications that are based on seamless access...

Determining the Optimal Software Rejuvenation Schedule via Semi-Markov Decision Process

Hiroyuki Eto — 2006-06-30

Journal of Computer Science, Published online: 30 June 2006; doi:10.3844/jcssp.2006.528.534

Software rejuvenation is a preventive and proactive maintenance policy that is particularly useful for counteracting the phenomenon of software aging. In this study we consider an operational softwa...

MEDiator: A Tool for Automatic Management of Event Domains

Markus Aleksy — 2006-06-30

Journal of Computer Science, Published online: 30 June 2006; doi:10.3844/jcssp.2006.535.541

In this study, we describe our software component MEDiator. Our development is based on OMG’s Management of Event Domains specification. It allows the efficient management and simplified operation o...

An Effective Key Management Approach to Differential Access Control in Dynamic Environments

Yogesh Karandikar — 2006-06-30

Journal of Computer Science, Published online: 30 June 2006; doi:10.3844/jcssp.2006.542.549

Applications like e-newspaper or interactive online gaming have more than one resource and a large number of users. There is a many-to-many relationship between users and resources; each user can acce...

Operation of an SLA-aware Grid Fabric

Matthias Hovestadt — 2006-06-30

Journal of Computer Science, Published online: 30 June 2006; doi:10.3844/jcssp.2006.550.557

Research on Grid Computing started under purely technical questions of how to realize the virtualization of distributed resources. Now, the commercial user should be attracted to use the Grid. Future ...