Much recent research work discusses the transformation between different process modelling languages. This work, however, is mainly focussed on specific process modelling languages, and thus the general reusability of the applied transformation concepts is rather limited. In this paper, we aim to abstract from concrete transformation strategies by distinguishing two major paradigms for represen...

We use analytical methods to investigate cellular automata for traffic flow. Two different mean-field approaches are presented, which we call site-oriented and car-oriented, respectively. The car-oriented mean-field theory yields the exact fundamental diagram for the model with maximum velocity vmax = 1 whereas in the site-oriented approach one has to take into account correlations between near...

Performance analysis is a critical component of the development of applications in high-performance scientific data processing, real-time, and other fields of performance-oriented computing. Analysis benefits greatly from support in the underlying development infrastructure. This paper examines the performance of one specific application in the field of high-energy astrophysics, and its impleme...

Much recent research work discusses the transformation between different process modeling languages. This work, however, is mainly focussed on specific process modeling languages, and thus the general reusability of the applied transformation concepts is rather limited. In this article, we aim to abstract from concrete transformations by distinguishing two major paradigms for representing contr...

We propose a framework for component-based modeling of distributed systems. It provides separation of concerns between computation (in object oriented components), coordination (via connectors) and dynamic reconfiguration (by the network manager). This framework builds upon the object oriented modeling language Creol for modeling the components, and uses the ideas of Reo for exogenous coordinat...

The progress in computer simulation tends to simulate complex systems governed by “internal models”, i.e. sophisticated activities of computing technique in real time flow. Independently of that, computer simulation needs the object-oriented programming and the agent-based paradigm for constructing “external models” of complex systems that are being designed. Thus the progress tends to use mode...

Recently, a network coding-based packet forwarding architecture COPE was proposed for multihop wireless networks to improve the throughput. Both simulation and testbed results verified COPE’s capability of enhancing throughput. However, COPE simply classifies all packets destined to the same nexthop into small-size or large-size virtual queues and then, to limit packet reordering, examines only...

As defense solutions against control-flow hijacking attacks gain wide deployment, control-oriented exploits from memory errors become difficult. As an alternative, attacks targeting non-control data do not require diverting the application’s control flow during an attack. Although it is known that such data-oriented attacks can mount significant damage, no systematic methods to automatically co...

The coupling and domain decomposition techniques combined with extensive use of object-oriented programming techniques will result in an efficient, flexible, and systematic process for producing parallel partial differential equations codes. This paper discusses important issues regarding the implementation of an object-oriented framework for simulating incompressible flow using parallel comput...

The phenomena of stress-induced (or flow-induced, strain-induced, force-induced) crystallization is characterized by the preferential of orientation of polymer segments along the direction of applied force. Many researches report that the drawing and spinning process would increase the crystallinity of polymeric materials, resulting in oriented segments that would explosively improve the crysta...