Client/Server applications are of increasing importance in industry, and have been improved by advanced distributed object-oriented techniques, dedicated tool support and both multimedia and mobile computing extensions. Recent responses to this trend are standardized distributed platforms and models including the Distributed Computing Environment (DCE) of the Open Software Foundation (OS F), Open Distributed Processing (ODP), and the Common Object Request Broker Architecture (CORBA) of the Object Management Group (OMG). These proceedings are the compilation of papers from the technical stream of the IFIPIIEEE International Conference on Distributed Platforms, Dresden, Germany. This conference has been sponsored by IFIP TC6.1, by the IEEE Communications Society, and by the German Association of Computer Science (GI -Gesellschaft fur Informatik). ICDP'96 was organized jointly by Dresden University of Technology and Aachen University of Technology. It is closely related to the International Workshop on OSF DCE in Karlsruhe, 1993, and to the IFIP International Conference on Open Distributed Processing. ICDP has been designed to bring together researchers and practitioners who are studying and developing new methodologies, tools and technologies for advanced client/server environ ments, distributed systems, and network applications based on distributed platforms."

Client/Server applications are of increasing importance in industry, and have been improved by advanced distributed object-oriented techniques, dedicated tool support and both multimedia and mobile computing extensions. Recent responses to this trend are standardized distributed platforms and models including the Distributed Computing Environment (DCE) of the Open Software Foundation (OS F), Open Distributed Processing (ODP), and the Common Object Request Broker Architecture (CORBA) of the Object Management Group (OMG). These proceedings are the compilation of papers from the technical stream of the IFIPIIEEE International Conference on Distributed Platforms, Dresden, Germany. This conference has been sponsored by IFIP TC6.1, by the IEEE Communications Society, and by the German Association of Computer Science (GI -Gesellschaft fur Informatik). ICDP'96 was organized jointly by Dresden University of Technology and Aachen University of Technology. It is closely related to the International Workshop on OSF DCE in Karlsruhe, 1993, and to the IFIP International Conference on Open Distributed Processing. ICDP has been designed to bring together researchers and practitioners who are studying and developing new methodologies, tools and technologies for advanced client/server environ ments, distributed systems, and network applications based on distributed platforms.

Client/server applications are of increasing importance in industry; they are a significant first step towards a global distributed processing model. A very recent response to this trend is the Distributed Computing Environment (DCE) of the Open Software Foundation (OSF), the emerging new industry standard for distributed processing. The papers in this volume discuss the client/server approach based on DCE, illustrating and analyzing the functionality of important DCE components and applications. A number of contributions also focus on new models beyond traditional client/server processing and beyond DCE. The papers in this volume were presented at the International Workshop on the OSF Distributed Computing Environment, held in Karlsruhe, Germany, October 7-8, 1993. Following an introductory chapter, the contributions are grouped into parts on DCE analysis and comparison, application support, methods and tools, RPC extensions, and object-based systems.

At the beginning of their studies students of architecture are confronted with a wealth of different ways in which to visually present their designs. Expressing ideas in the form of drawings and models is usually required in the early stages of studying: "learning by doing" is the only way for students to quickly develop a repertoire for their design work. However, there are important issues to consider between the phases of devising the spatial concept and recreating it in a two- or three-dimensional drawing or physical model: How to construct a perspective freehand drawing? What plan drawings are necessary to present my design? What scale should my model be and what materials should I use to construct it? Basics Architectural Presentation combines the highly successful single volumes Technical Drawing, Freehand Drawing, CAD, Modelbuilding (new edition) and Architectural Photography from the series BASICS in a new volume. Step-by-step, it conveys possible ways to present architectural projects throughout the various project phases. In an informative and practical approach, the publication discusses the basics of architectural representation from freehand drawing, which is especially important in the design phase, to the plan drawing, model, and architecture photography. The student architect learns the tools necessary for presenting his or her work, supported by many concrete examples and practical tips that are directly applicable.

Models are spatial presentations of architectural concepts, miniature representations of the proposed buildings. Better than any drawing or computer simulation, they help to create a better spatial impression of the projected building, because anybody looking at a model can select the angle of view and thereby obtain a personal impression of the space. Designing and presenting a design concept with the help of a model is an important step in creating an awareness of the intended design. Basics Model Building provides students with concise knowledge of model typologies, materials, tools, and techniques for the professional creation of working and presentation models. The new edition of this successful volume has been updated and supplemented, in particular in the field of digital model building.

At the beginning of their studies students of architecture are confronted with a wealth of different ways in which to visually present their designs. Expressing ideas in the form of drawings and models is usually required in the early stages of studying: "learning by doing" is the only way for students to quickly develop a repertoire for their design work. However, there are important issues to consider between the phases of devising the spatial concept and recreating it in a two- or three-dimensional drawing or physical model: How to construct a perspective freehand drawing? What plan drawings are necessary to present my design? What scale should my model be and what materials should I use to construct it? Basics Architectural Presentation combines the highly successful single volumesTechnical Drawing, CAD, Modelbuilding, and Architectural Photography from the series BASICS with a yet to be published volume entitled Freehand Drawing. Step-by-step, it conveys possible ways to present architectural projects throughout the various project phases. In an informative and practical approach, the publication discusses the basics of architectural representation from freehand drawing, which is especially important in the design phase, to the plan drawing, model, and architecture photography. The student architect learns the tools necessary for presenting his or her work, supported by many concrete examples and practical tips that are directly applicable.

Dem Leser wird gezeigt, wie eine umfassende und plattformunabhangige Losung zur Umsetzung von mehrseitiger Sicherheit in Kommunikationsnetzen aussehen kann. Der auf CD beigelegte, in Java geschriebene Prototyp unterstutzt ein spielerisches Sich-vertraut-Machen mit der Konfiguration von Schutzmechanismen fur mehrseitige Sicherheit. Es geht um die zielgerichtete Aushandlung von Sicherheitsanforderungen zwischen allen Beteiligten und wie dabei Konflikte um gegensatzliche Anforderungen gelost bzw. entscharft werden konnen. Im Buch werden Grundlagen zu Schutzzielen und zur Konfigurierung und Aushandlung von Sicherheitsfunktionalitat beschrieben.

Das Buch beschreibt die wichtigsten Themen der Informatik exakt und kompakt, wie sie fur Ingenieure wichtig sind. Die Abschnitte des Buches sind modular angeordnet und konnen einzeln, voneinander unabhangig gelesen werden. Die fur Ingenieure wichtigen Themen wie Internet, Simulation, Datenbanken und Multimedia werden anhand zahlreicher Praxisbeispiele dargestellt. Neben dem kompakten Format des Buches wird auch durch das Layout die Information kompakt angeboten.

Das Distributed Computing Environment (DCE) der Open Software Foundation (OSF) stellt eine Reihe von Softwarekomponenten bereit, um die Erstellung verteilter Anwendungsprogramme auf Rechnernetzen zu erleichtern. Dem Leser wird ein praxisnaher Uberblick uber OSF DCE vermittelt und konkrete Hilfestellung beim Einsatz dieser Systemumgebung geboten. Neben der detaillierten Darstellung der einzelnen Komponenten werden auch konzeptionelle Grundlagen erlautert, um das Verstandnis auch ohne weiteres Spezialwissen zu gewahrleisten. Graphische Illustrationen, tabellarischer Vergleich wichtiger Grundkonzepte, Programmbeispiele, Informationen uber Produkte und Systemlosungen, sowie Index und Literaturverzeichnis erhohen den praktischen Nutzen des Werkes.

Gegenstand dieses Buches ist die Entwicklung komplexer verteilter Anwendungsprogramme. Thema ist nicht, wie in den traditionellen B}chern }berverteilte DV-Systeme, die Entwicklung oder der Betrieb von Rechnernetzen, sondern deren Einsatz bei der Entwicklung verteilter Anwendungen. In Bereichen wie B}roautomatisierung und Produktionsautomation oder bei Firmen, deren Abl{ufe stark auf internationale Weitverkehrsnetze abgest}tzt sind (Fluggesellschaften, internationale Broker-Firmen), spiegeln die im Buch behandelten Fragestellungen schon heute die Probleme der Anwendungsentwickler wider; in vielen anderen Industriezweigen zeichnet sich die Notwendigkeit komplexer verteilter Anwendungen durch den zunehmenden Zwang zur Verflechtung und zur Automatisierung bereits ab. Ein Blick auf die in der Industrie eingesetzten Hilfsmittel zeigt jedoch, da~ diese f}r die erw{hnten komplexen Anwendungen nicht mehr ad{quat sind. Das Buch richtet sich in erster Linie an Dozenten, Studenten und Wissenschaftler im Bereich des Software Engineering, sowie an Softwareentwickler in der Praxis.

Mit der zunehmenden Leistungsfahigkeit verteilter Rechnersysteme und dem wachsenden Bedarf fur verteilte Anwendungen steigen auch die Anforderungen an die Entwicklungsunterstutzung fur solche Anwendungen. In den letzten Jahren gewannen daher verteilte objektorientierte Techniken nach dem Vorbild das Systems Smalltalk zunehmende Bedeutung. Dieses Buch fuhrt zunachst in den verteilten objektorientierten Ansatz ein und vergleicht diesen mit anderen Mechanismen zur Erstellung verteilter Anwendungen. In ihrem Kernteil befasst sich die Arbeit dann mit der Erweiterung dieses Ansatzes um neue Konzepte zur Steuerung von Objektmigrationen und zur Verwaltung einer verteilten Anwendungskonfiguration. Dabei werden integrierte Methoden und Werkzeuge zur statischen und dynamischen Plazierung der Objekte einer verteilten Anwendung auf einem verteilten Rechnersystem angeboten. Die Migrationssteuerung hat die dynamische Zusammenfuhrung kommunizierender Objekte zum Ziel und umfasst ein verteiltes Laufzeitprotokoll zur Realisierung von Objektmigrationen, ein Monitorsystem zur Analyse von Migrationsentscheidungen und eine Beschreibungsnotation zur Vergabe von Migrationsanforderungen. Die Konfigurationsverwaltung stellt eine deklarative Konfigurationssprache zur Beschreibung von Anwendungsstrukturen sowie eine Anderungsnotation zur Anforderung dynamischer Konfigurationsanderungen zur Verfugung.

Viele industrielle Anwendungen basieren auf verteilten Systemen. Derzeit werden sie durch die Integration von Mobilfunknetzen und mobilen Endgeraten intensiv weiterentwickelt. In dem Band stellen die Autoren die Grundlagen verteilter Systeme anhand eines durchgehenden Beispiels dar, das sich an ublichen Standards orientiert. Der Schwerpunkt liegt auf einer kompakten Darstellung grundlegender Konzepte und Technologien, wobei auch aktuelle Entwicklungen diskutiert werden. Die aktualisierte Neuauflage enthalt zusatzliche Ubungsaufgaben.

Architectural models are used at various stages of a project. As working models they support the design process: they are made up from time to time using simple materials, such as cardboard, without any attempt at accuracy, and continue to be adjusted and added to as the ideas and the design progress. The point here is to swiftly check a design idea, to allow it to be continued or dismissed. Presentational models are more involved; at this stage the design has been completed and the purpose of the model is to convey the ideas to the potential user in a clear and easy-to-understand way. The book Architecture and Model Building includes outstanding examples explaining the possibilities of this medium and, at the same time, provides comprehensive information on materials and techniques.

Das Architekturmodell ist ein Arbeits- und Entwurfswerkzeug und Teil der Architekturdarstellung wie die Prasentationszeichnung. Mit seiner Hilfe wird Architektur erfunden und entwickelt. Mit einfachen Mitteln wie Pappe koennen schnell Proportionen und Raumzusammenhange uberpruft werden. Keine andere Darstellungsform ermoeglicht die sinnlich-haptische Wahrnehmung von Raum und Architektur, ihrer Oberflachen und ihrer Plastizitat.

At the beginning of their studies students of architecture are confronted with a wealth of different ways in which to visually present their designs. Expressing ideas in the form of drawings and models is usually required in the early stages of studying: "learning by doing" is the only way for students to quickly develop a repertoire for their design work. However, there are important issues to consider between the phases of devising the spatial concept and recreating it in a two- or three-dimensional drawing or physical model: How to construct a perspective freehand drawing? What plan drawings are necessary to present my design? What scale should my model be and what materials should I use to construct it? Basics Architectural Presentation combines the highly successful single volumes Technical Drawing, CAD, Modelbuilding, and Architectural Photography from the series BASICS with a yet to be published volume entitled Freehand Drawing. Step-by-step, it conveys possible ways to present architectural projects throughout the various project phases. In an informative and practical approach, the publication discusses the basics of architectural representation from freehand drawing, which is especially important in the design phase, to the plan drawing, model, and architecture photography. The student architect learns the tools necessary for presenting his or her work, supported by many concrete examples and practical tips that are directly applicable.

At the beginning of their studies students of architecture are confronted with a wealth of different ways in which to visually present their designs. Expressing ideas in the form of drawings and models is usually required in the early stages of studying: "learning by doing" is the only way for students to quickly develop a repertoire for their design work. However, there are important issues to consider between the phases of devising the spatial concept and recreating it in a two- or three-dimensional drawing or physical model: How to construct a perspective freehand drawing? What plan drawings are necessary to present my design? What scale should my model be and what materials should I use to construct it? Basics Architectural Presentation combines the highly successful single volumesTechnical Drawing, CAD, Modelbuilding, and Architectural Photography from the series BASICS with a yet to be published volume entitled Freehand Drawing. Step-by-step, it conveys possible ways to present architectural projects throughout the various project phases. In an informative and practical approach, the publication discusses the basics of architectural representation from freehand drawing, which is especially important in the design phase, to the plan drawing, model, and architecture photography. The student architect learns the tools necessary for presenting his or her work, supported by many concrete examples and practical tips that are directly applicable.