@inproceedings{39378, author = {{Schäfer, Robbie and Müller, Wolfgang and Dangberg, Andreas}}, booktitle = {{Proceedings of the HICSS-35}}, title = {{{Fuzzy Rules for the Transcoding of HTML Files}}}, year = {{2002}}, } @inproceedings{39398, abstract = {{This article presents a UML profile for an OCL extension that enables modelers to specify behavioral, state-oriented real-time constraints in OCL. In order to perform a seamless integration into the upcoming UML2.0 standard, we take the latest OCL2.0 metamodel proposal by Warmer et al. [22] as a basis. A formal semantics of our temporal OCL extension is given by a mapping to time-annotated temporal logics formulae. To give an example of the applicability of our extension, we consider a modeling approach for manufacturing systems called MFERT. We present a corresponding UML profile for that approach and combine both profiles for formal verification by real-time model checking.}}, author = {{Flake, Stephan and Müller, Wolfgang}}, booktitle = {{Proceedings of the UML 2002 - The Unified Modeling Language}}, publisher = {{Springer-Verlag}}, title = {{{A UML Profile for Real-Time Constraints with the OCL}}}, year = {{2002}}, } @inproceedings{39393, author = {{Dangelmeier, Wilhelm and Darnedde, C. and Flake, Stephan and Müller, Wolfgang and Pape, U.}}, title = {{{Graphische Spezifikation und Echtzeitverifikation von Produktionsautomatisierungssystemen}}}, year = {{2002}}, } @inproceedings{39382, abstract = {{We present a rigorous but transparent semantics definition of the SpecC language that covers the execution of SpecC behaviors and their interaction with the kernel process. The semantics include wait, wait for, par, and try statements as they are introduced in SpecC. We present our definition in form of distributed abstract state machine (ASM) rules strictly following the lines of the SpecC Language Reference Manual. We mainly see our formal semantics in three application areas. First, it is a concise, unambiguous description for documentation and standardization. Second, it applies as a high-level, pseudo code-oriented specification for the implementation of a SpecC simulator. Finally, it is a first step for SpecC synthesis in order to identify similar concepts with other languages like VHDL and SystemC for the definition of common patterns and language subsets.}}, author = {{Müller, Wolfgang and Dömer, Rainer and Gerstlauer, Andreas}}, booktitle = {{Proceedings of the ISSS02}}, isbn = {{1-58113-576-9}}, keywords = {{Standardization, Kernel, Permission, Formal verification, Logic functions, Documentation, Reasoning about programs, Specification languages, Formal specifications, Software systems}}, title = {{{The Formal Execution Semantics of SpecC}}}, doi = {{10.1145/581199.581234 }}, year = {{2002}}, } @inproceedings{39387, abstract = {{This paper compares the use of three different approaches to transcoding of XML [Extensible Markup Language]-based user interface descriptions to other target formats. The source is the interface section of the XML-based markup language for user interfaces, UIML [User Interface Markup Language], which has been extended with a vocabulary for the description of generic user interfaces. Target formats used as examples for the comparison are HTML [Hypertext Markup Language], and VoiceXML. The compared means for transcoding are XSLT [Extensible Stylesheet Language Transformation], the UIML peers section with enhancements for transcoding, and RDL/TT [Rule Description Language for Tree Transformation], a Java-like transcoding language. Rendered by www.RenderX.com Comparing Transcoding Tools for Use with a Generic User Interface Format.}}, author = {{Plomp, Johan and Schäfer, Robbie and Müller, Wolfgang}}, booktitle = {{Proceedings of the Extreme Markup Languages 2002}}, title = {{{Comparing Transcoding Tools for Use with a Generic User Interface Format}}}, year = {{2002}}, } @inproceedings{39403, abstract = {{The Unified Modeling Language (UML) has received wide acceptance as a standard language in the field of software specification by means of different diagram types. In a recent version of UML, the textual Object Constraint Language (OCL) was introduced to support specification of constraints for UML models. But OCL currently does not provide sufficient means to specify constraints over the dynamic behavior of a model. This article presents an OCL extension that is consistent with current OCL and enables modelers to specify state-related time-bounded constraints. We consider the case study of a flexible manufacturing system and identify typical real-time constraints. The constraints are presented in our temporal OCL extension as well as in temporal logic formulae. For general application, we define a semantics of our OCL extension by means of a time-bounded temporal logic based on Computational Tree Logic (CTL).}}, author = {{Flake, Stephan and Müller, Wolfgang}}, booktitle = {{Proceedings of HICSS-35}}, isbn = {{0-7695-1435-9}}, keywords = {{Unified modeling language, Logic, Formal verification, Real time systems, Programming profession, Vehicle dynamics, Software standards, Flexible manufacturing systems, Electronics industry, Protocols}}, location = {{Big Island, HI, USA }}, title = {{{Specification of Real-Time Properties for UML Models}}}, doi = {{10.1109/HICSS.2002.994469}}, year = {{2002}}, } @inproceedings{39402, abstract = {{Die Object Constraint Language (OCL) wurde entwickelt, um Modelleinschränkungen beim objektorientierten Softwareentwurf mit der UML [14] ausdrücken zu können. Sie wird hauptsächlich benutzt, um Invarianten für Objekte sowie Vor-und Nachbedingungen von Operationen zu spezifizieren. Zurzeit bieten OCL und Echtzeiterweiterungen der UML nur bedingt geeignete Mittel, um temporale zeitbehaftete Modelleigenschaften zu beschreiben. Insbesondere kann man mit OCL keine Einschränkunge uber das dynamische Verhalten eines UML-Modells formulieren, die die Reihenfolge von Objektzuständen und Zustandsübergängen betreffen. Um ein korrektes Systemverhalten zu garantieren, ist es jedoch insbesondere bei zeitkritischen Anwendungen notwendig, solche zustandsbasierten zeitbehafteten Einschränkungen in einer formalen Art und Weise ausdrücken zu können. Es sind daher verschiedene Vorschläge veröffentlicht worden, in denen die OCL erweitert worden ist, um Modellierern die Möglichkeit zu geben, temporale Einschränkungen zu formulieren. Dieser Artikel gibt eine Überblick über die zurzeit bekannten Vorschläge und zeigt Ansätze für weitere Entwicklungen in diesem Bereich auf.}}, author = {{Flake, Stephan and Müller, Wolfgang}}, title = {{{Temporale Erweiterungen der OCL - Überblick und Aussichten}}}, year = {{2002}}, } @inproceedings{39411, abstract = {{Rapid prototyping based on 3D models is well accepted for several applications. This article addresses the application of animated virtual 3D prototypes for the development of computer-based systems supporting early collaboration of the system designer with the external customer. Our methodology seamlessly integrates illustration through 3D animation with the main tasks of computer-based real-time systems development, i.e., implementation and verification. The approach is outlined by the example of the design of a flexible manufacturing system.}}, author = {{Flake, Stephan and Geiger, Christian and Müller, Wolfgang and Ruf, Jürgen}}, booktitle = {{Proceedings of IEEE KMN 2001}}, isbn = {{0-7695-1269-0}}, keywords = {{Virtual prototyping, Animation, Collaboration, System analysis and design, Feedback, Application software, Power system modeling, Handicapped aids, Process design, Contracts}}, title = {{{Customer-Oriented Systems Design through Virtual Prototyps}}}, doi = {{10.1109/ENABL.2001.953425}}, year = {{2001}}, } @inproceedings{39407, abstract = {{This article presents challenges, visions, and solutions for a true Pan- European collaborative engineering infrastructure that is a target of the IST project E-COLLEG. The consortium aims at the definition of a transparent infrastructure that will enable engineers from various domains to collaborate during the design of complex heterogeneous systems. In this context, we introduce an advanced collaborative infrastructure (ACI). ACI covers dynamic Tool Registration and Management Services (TRMS) for distance-spanning, tool integration and administration, as well as open interfaces for XML-based data exchange. TRMS will constitute a backbone for E-COLLEG-related pan-European collaborative research and engineering studies by fostering a combination of most recent Plug- and-Play techniques employing agent-based communication based on XML- oriented integration technologies. This new enabling technology for collaborative engineering is validated in two application scenarios.}}, author = {{Bauer, M. and Eikerling, Heinz-Josef and Müller, Wolfgang and Pawlak, A. and Siekierska, K. and Soderberg, D. and Warzee, X.}}, title = {{{Advanced Infrastructure for PAN-European Collaborative Engineering}}}, year = {{2001}}, } @inproceedings{39421, abstract = {{We present a rigorous but transparent semantics definition of SystemC that covers method, thread, and clocked thread behavior as well as their interaction with the simulation kernel process. The semantics includes watching statements, signal assignment, and wait statements as they are introduced in SystemC V1.O. We present our definition in form of distributed Abstract State Machines (ASMs) rules reflecting the view given in the SystemC User's Manual and the reference implementation. We mainly see our formal semantics as a concise, unambiguous, high-level specification for SystemC-based implementations and for standardization. Additionally, it can be used as a sound basis to investigate SystemC interoperability with Verilog and VHDL.}}, author = {{Müller, Wolfgang and Ruf, Jürgen and Hoffmann, D. W. and Gerlach, Joachim and Kropf, Thomas and Rosenstiehl, W.}}, booktitle = {{Proceedings of the Design, Automation, and Test in Europe (DATE’01)}}, isbn = {{0-7695-0993-2}}, keywords = {{Yarn, Formal verification, Kernel, Hardware design languages, Electronic design automation and methodology, Algebra, Computational modeling, Logic functions, Computer languages, Clocks}}, publisher = {{IEEE}}, title = {{{The Simulation Semantics of SystemC}}}, doi = {{10.1109/DATE.2001.915002}}, year = {{2001}}, } @inproceedings{39427, author = {{Flake, Stephan and Müller, Wolfgang and Pape, U. and Ruf, Jürgen}}, booktitle = {{Proceedings of ISI 2001}}, title = {{{Real-Time Model Checking for the Analysis of flexible Manufacturing Systems}}}, year = {{2001}}, } @inproceedings{39432, abstract = {{This article presents SAL, a general purpose scripting language for the rapid development of distributed software agents seamlessly embedded in a visual environment. Integrated facilities for dynamic visualization provide sample but powerful means for debugging and domain-oriented animation. SAL agents are arranged on a set of 2D worksheets which can be distributed over different machines. An agent's program is defined by the means of a table specifying a set of state transition rules with a condition and a sequence of actions each. Beyond basic computation and communication, actions can dynamically modify the agent's depiction, its program, and spawn arbitrary processes. A couple of examples demonstrate SAL's applicability in various domains like electronic systems design and process management.}}, author = {{Müller, Wolfgang and Meyer, A. and Zabel, Henning}}, booktitle = {{Proceedings of the 34th Annual Hawaii International Conference on System Sciences}}, isbn = {{0-7695-0981-9}}, keywords = {{software prototyping, distributed programming, authoring languages, software agents, program visualisation, parallel languages}}, title = {{{A Language for the Rapid Prototyping of Mobile Evolving Agents}}}, doi = {{10.1109/HICSS.2001.926319}}, year = {{2001}}, } @inproceedings{39431, author = {{Lehrenfeld, Georg and Müller, Wolfgang and Tellmann, Rainer}}, booktitle = {{Proceedings of SCASE 01}}, title = {{{Security Concepts for Agent-Based Systems}}}, year = {{2001}}, } @inproceedings{39406, abstract = {{Die Object Constraint Language (OCL) wurde entwickelt, um Modellierer bei der Spe- zifikation von Modelleigenschaften im Kontext gegebener UML Diagramme zu un- terst ̈utzen [3]. Jedoch ist es leider nicht m ̈oglich, Eigenschaften, die das dynamische Verhalten betreffen, mit der derzeitigen Version von OCL auszudr ̈ucken. Wir pr ̈asentieren eine Erweiterung von OCL Version 1.4 zur Spezifikation von zu- standsbasierten, zeitbehafteten Eigenschaften. Obwohl OCL und unsere Erweiterung in erster Linie im Rahmen der UML entwickelt worden sind, ist es auch m ̈oglich, mit dieser Sprache Eigenschaften f ̈ur andere objektbasierte Formalismen zu beschrei- ben. Wir veranschaulichen dies anhand einer Anwendung bei der Modellpr ̈ufungsspe- zifikation in Verbindung mit MFERT, einer praxisrelevanten Notation, die im Projekt GRASP zur Modellierung von Produktionsabl ̈aufen eingesetzt wird.}}, author = {{Flake, Stephan and Müller, Wolfgang}}, title = {{{Spezifikation von Echtzeiteigenschaften mit OCL für eine MFERT-basierte Fallstudie}}}, year = {{2001}}, } @inproceedings{39425, abstract = {{This paper introduces the VIVID (Visual Interactive VIew Development) framework for generation and customization of advanced visual interactive environments for resource manipulation in databases. The framework covers the definition of symbols, their mapping to database objects, specification of spatial relationships among them, layout assignment as well as the definition of drag&drop-based user interactions.}}, author = {{Dangberg, Andreas and Müller, Wolfgang}}, booktitle = {{Proceedings of ISI 2001}}, title = {{{Generation of Interactive Visual Interfaces for Resource Management}}}, year = {{2001}}, } @misc{53588, author = {{Dangberg, Andreas and Müller, Wolfgang}}, title = {{{Verfahren zur Steuerung der Anordnung von graphischen Elementen}}}, year = {{2000}}, } @inproceedings{39434, abstract = {{In diesem Artikel stellen wir die Anwendung von Modellprüfung für ein Fertigungssystem mit freifahrenden Transportfahrzeugen vor. Dabei konzentrieren wir uns darauf, den Materialfluss in einem Systemmodell auf die Einhaltung quantitativer und zeitlicher Bedingungen hin zu überprüfen. Zur Modellentwicklung setzen wir die graphische Beschreibungsmethode MFERT ein, die sich bereits mehrfach in Industrieprojekten bewährt hat. Wir präsentieren eine Abbildung von MFERT in zeitannotierte Zustandsübergangssysteme, die für ein bereits existierendes Werkzeug zur Modellprüfung als Eingabe einer Modellbeschreibung dienen. Bei der Modellprüfung wird diese Beschreibung auf die Einhaltung von Eigenschaften überprüft, die in einer temporalen Logik oder einer davon abstrahierten Form spezifiziert werden.}}, author = {{Flake, Stephan and Müller, Wolfgang and Pape, Ulrich and Ruf, Jürgen}}, title = {{{Modellprüfung für den Entwurf von Fertigungssteuerungssystemen}}}, year = {{2000}}, } @inproceedings{39444, abstract = {{Prototyping mit 3D-Modellen in virtueller Umgebung ist eine kostengünstige Alternative zur Entwicklung von physikalischen Modellen und Mock-ups. Für einige Anwendungen ergeben sich erhebliche Vorteile durch die Validierung in einer virtuellen Umgebung. In diesem Artikel stellen wir den Einsatz einer 3D-Animation zur Entwicklung und zum Test einer Fahrzeugsteuerung vor. Basierend auf dem Prinzip der schrittweisen Verfeinerung kann die Steuerung zunächst nur unter Berücksichtigung der Kommunikation zwischen den Basiskomponenten entworfen werden. Im zweiten Schritt wird die Ansteuerung der Aktoren unter Auswertung der Sensoren berücksichtigt. Letztendlich ist das System unter Einflussnahme der physikalischen Größen zu validieren. Wir stellen die Schnittstelle exemplarisch anhand einer Steuerung für fahrerlose Transportfahrzeuge im Szenario eines holonischen Transportsystems vor. }}, author = {{Braatz, A. and Flake, Stephan and Müller, Wolfgang and Westkämper, E.}}, title = {{{Prototyping einer Fahrzeug-steuerung in einer virtuellen 3D-Umgebung}}}, year = {{2000}}, } @inproceedings{39461, abstract = {{Model checking has received wide acceptance as a valuable technique in the field of electronic design automation and is currently of growing interest in general systems design. Though its concepts and applications are well understood it often turns out that engineers have severe problems with the specification process and the underlying notation, i.e., formulation and understanding of specifications through means of temporal logic formulae. In this article, we present an approach for a natural language–oriented representation of temporal logic formulae by introducing patterns of structured English sentences for Clocked CTL (CCTL) specification. After outlining the basic patterns of the sentences we give their semantics by a translation to CCTL. A final example demonstrates their application.}}, author = {{Flake, Stephan and Müller, Wolfgang and Ruf, Jürgen}}, title = {{{Structured English for Model Checking Specification}}}, year = {{2000}}, } @inproceedings{39435, abstract = {{This article presents SAL (Synchronous Agent Language), a general-purpose grid{based 2D programming language for parallel system specication, implementation, and visualization. SAL agents have a depiction and a behavior. The behavior is dened by the means of state transition rules. The depiction is given by the drawing area on its surface. Actions in rules can execute drawing operations for dynamically changing the depiction during runtime. For a broader range of applications, SAL incorporates mobile code, code modication during runtime, and tool integration facilities.}}, author = {{Müller, Wolfgang and Meyer, Arne and Zabel, Henning}}, booktitle = {{Proceedings of the IEEE Symposium on Visual Languages}}, title = {{{A Visual Framework for the Scripting of Parallel Agents}}}, year = {{2000}}, }