Publikationen - Gesamtliste ab 2007 (ohne Abschlussarbeiten)

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Taylor, Simon J. E.; Turner, Stephen J.; Straßburger, Steffen
Guidelines for commercial off-the-shelf simulation package interoperability. - In: Winter Simulation Conference, 2008, ISBN 978-1-4244-2707-9, (2008), S. 193-204

Commercial-off-the-shelf (COTS) Simulation Packages (CSPs) are widely used visual interactive modeling environments such as Arena, Anylogic, Flexsim, Simul8, Witness, etc. CSP Interoperability (or distributed simulation) is a technique that allows a simulation to be executed over several computers or for several simulations running on different computers to run together. This also relates to simulation languages such as SLX and GPSS/H. There have been various attempts to interoperate these CSPs, some with the IEEE 1516 High Level Architecture (HLA). These can be quite complex and it is easy to loose track of exactly what is occurring between interoperating CSPs and their models. This paper introduces a set of Interoperability Reference Models (IRMs), or design patters for CSP Interoperability, that can be used as guidelines to simplify the interoperability process.



http://dx.doi.org/10.1109/WSC.2008.4736068
Straßburger, Steffen; Schulze, Thomas; Fujimoto, Richard
Future trends in distributed simulation and distributed virtual environments: results of a peer study. - In: Winter Simulation Conference, 2008, ISBN 978-1-4244-2707-9, (2008), S. 777-785

This paper reports main results of a peer study on future trends in distributed simulation and distributed virtual environments. The peer study was based on the opinions of more than 60 experts which were collected by means of a survey and personal interviews. The survey collected opinions concerning the current state-of-the-art, relevance, and research challenges that must be addressed to advance and strengthen these technologies to a level where they are ready to be applied in day-to-day business in industry. Most important result of this study is the observation that as research areas, both distributed simulation and distributed virtual environments are attributed a high future practical relevance and a high economic potential. At the same time the study shows that the current adoption of these technologies in the industrial sector is rather low. The study analyses reasons for this observation and identifies open research challenges.



http://dx.doi.org/10.1109/WSC.2008.4736140
Beyer, Jochen; Becher, Frank
Agentenbasiertes Scheduling und Rescheduling in Produktions-Transport-Netzwerken. - In: Advances in simulation for production and logistics applications, (2008), S. 299-308

An agent-based approach for supporting production and logistics planning is presented. The focus is not only production schedules but also costs of manufacturing and logistic services. This is achieved through efficient negotiation mechanisms working with additional budget or cost reduction, based on a contracting protocol and the agent infrastructure JADE. Two different strategies are examined for rescheduling jobs to minimize total weighted tardiness. The proposed approach is illustrated in a case study concerning optimisation of a four stage production network in relation to sub-contracted logistic services.



Straßburger, Steffen; Schulze, Thomas
Zukunftstrends in den Bereichen Verteilte Simulation und Verteilte Virtuelle Umgebungen. - In: Advances in simulation for production and logistics applications, (2008), S. 489-498

This paper summarizes the results of a peer study on future trends in distributed simulation and distributed virtual environments initiated by the Fraunhofer IFF. The study is based on the opinions of more than 60 experts which were collected by means of a survey and personal interviews. Most important result of this study is the fact that both distributed simulation and distributed virtual environments as research areas are attributed a high future practical relevance and a high economic potential. At the same time the study shows that the current adoption of the technologies in the industrial sector is rather low. The study also analyses reasons for this observation and identifies open research challenges in these areas.



Raab, Michael; Schulze, Thomas; Straßburger, Steffen
Erfahrungen aus der Anwendung von HLA-basierter verteilter Simulation im Nutzfahrzeugbereich. - In: Advances in simulation for production and logistics applications, (2008), S. 499-508

Distributed simulation has been known for many years as a method for the simulation of complex models. This paper presents the author's experiences from an industrial project targeting distributed simulation in the utility vehicles sector production. Existing monolithic simulation models were extended for their reuse in a distributed environment. One project requirement was to ensure the consistency between monolithic and distributed model versions. Project results show that the frequently mentioned concerns regarding distributed simulation can be resolved successfully in industrial contexts. The gathered results of distributed simulations legitimate the necessary efforts.



Taylor, Simon J. E.; Turner, Stephen J.; Straßburger, Steffen
Clarifying interoperability: the SISO CSPI PDG standard for commercial off-the-shelf simulation package interoperability reference models. - In: 22nd Workshop on Principles of Advanced and Distributed Simulation, 2008, ISBN 978-0-7695-3159-5, (2008), S. 153

Commercial-off-the-shelf Simulation Packages (CSPs), visual interactive modelling environments such as Arena, Anylogic, Flexsim, Simul8, Witness, etc., are important "black box" software tools that support the development, experimentation and visualization of simulation models. They are widely used in commerce, defence, health, manufacturing and logistics. There is a growing need to link together, or to interoperate, models developed in these CSPs across computer networks. The motivations for this include data sensitivity, difficult to move resources and speed up. - There have been various attempts to create distributed simulations with these CSPs and their tools, some with the High Level Architecture (HLA). In this context, a distributed simulation or federation is composed of a set of CSPs and their models. A CSP will typically simulate its model using a discrete-event simulation algorithm. Each model/CSP represents a federate normally running on its own computer. In a distributed simulation, each model/CSP federate therefore exchanges data via a runtime infrastructure (RTI) implemented over a network in a time synchronized manner. The question is what data is exchanged and how is it done. The answer to these questions can be quite difficult and it is further compounded by no "standard" terminology between the CSPs. What is clear is that there is no common approach. Additionally, it is extremely difficult to identify the actual functionality of these implementations. As a step towards creating a common approach to interoperability between models and their CSPs, the COTS Simulation Package Interoperability Product Development Group (CSPI PDG) at the Simulation Interoperability Standards Organization have developed a standard set of Interoperability Reference Models (IRMs), the SISO CSPI PDG Standard for Commercial Off-The-Shelf Simulation Package Interoperability Reference Models. These IRMs state clearly interoperability rules for entity transfer, shared resources, shared events and shared data structures. - This talk will outline the processes by which these IRMs have been created, how they are intended to be used, and current progress in standardizing their implementation.



http://dx.doi.org/10.1109/PADS.2008.35
Hauser, Helwig; Straßburger, Steffen; Theisel, Holger
Simulation and visualization 2008 : proceedings of the 2008 Simulation and Visualization Conference, 28 - 29 February 2008. - Erlangen [u.a.] : SCS Publ. House, 2008. - XII, 351 S. ISBN 3-936150-53-2
Literaturangaben

Lendermann, Peter; Heinicke, Matthias U.; McGinnis, Leon F.; McLean, Charles; Straßburger, Steffen; Taylor, Simon J. E.
Panel: distributed simulation in industry - a real-world necessity or ivory tower fancy?. - In: Winter Simulation Conference, 2007, ISBN 978-1-4244-1306-5, (2007), S. 1053-1062

Distributed simulation has a long history at the Winter Simulation Conference. Although successful in the military domain it appears, however, that the idea of applying distributed simulation in other fields for modeling and analysis of large-scale, heterogeneous systems such as communication networks or supply chains has still not reached the stage of commercial use until today. This panel attempts to identify reasons for this phenomenon by debating whether distributed simulation is actually a real-world necessity or should rather be considered ivory tower fancy.



http://dx.doi.org/10.1109/WSC.2007.4419704
Taylor, Simon J. E.; Mustafee, Navonil; Straßburger, Steffen; Turner, Stephen J.; Low, Malcolm Y. H.; Ladbrook, John
The SISO CSPI PDG standard for commercial off-the-shelf simulation package interoperability reference models. - In: Winter Simulation Conference, 2007, ISBN 978-1-4244-1306-5, (2007), S. 594-602

For many years discrete-event simulation has been used to analyze production and logistics problems in manufacturing and defense. Commercial-off-the-shelf Simulation Packages (CSPs), visual interactive modelling environments such as Arena, Anylogic, Flexsim, Simul8, Witness, etc., support the development, experimentation and visualization of simulation models. There have been various attempts to create distributed simulations with these CSPs and their tools, some with the High Level Architecture (HLA). These are complex and it is quite difficult to assess how a set of models/CSP are actually interoperating. As the first in a series of standards aimed at standardizing how the HLA is used to support CSP distributed simulations, the Simulation Interoperability Standards Organization's (SISO) CSP Interoperability Product Development Group (CSPI PDG) has developed and standardized a set of Interoperability Reference Models (IRM) that are intended to clearly identify the interoperability capabilities of CSP distributed simulations.



http://dx.doi.org/10.1109/WSC.2007.4419652
Straßburger, Steffen; Schulze, Thomas; Lemessi, Marco
Applying CSPI reference models for factory planning. - In: Winter Simulation Conference, 2007, ISBN 978-1-4244-1306-5, (2007), S. 603-609

This paper investigates the applicability of the CSPI reference models in different factory planning scenarios. These scenarios are taken from real industrial use cases. The CSPI reference models are put forward by the CSPI Product Development Group within the Simulation Interoperability Standards Organization (SISO). The objective of this group is to facilitate commercial-off-the-shelf (COTS) simulation package interoperability (CSPI). The approach to do this is to define and standardize use patterns of the High Level Architecture (HLA) which is the state-of-the-art standard for distributed simulation. An intermediate step towards this goal is the definition of the interoperability reference models discussed here. They describe typical interoperability problems encountered when connecting different COTS simulation packages. This paper focuses on the first two of these reference models and reports on experiences drawn for their implementation.



http://dx.doi.org/10.1109/WSC.2007.4419653