Concept

Jeu de rôle

Publications associées (189)

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A Foundation for the Concept of Role in Object Modelling

Alain Wegmann

Standardization experts in object modelling are having difficulties with defining the concept of role ...

2000

A New Definition for the Concept of Role, and Why it Makes Sense

Alain Wegmann

There is widespread agreement in the object community that the concept of role is important for object modelling, but little agreement about what is to be understood by a role. In this paper, we present a new definition for the concept of role in the conte ...

2000

The Role of ¨Roles¨ in Use Case Diagrams

Alain Wegmann

Use cases are the modeling technique of UML for formalizing the functional requirements placed on systems. This technique has limitations in modeling the context of a system, in relating systems involved in a same business process, in reusing use cases, an ...

2000

The Role of 'Roles' in Use Case Diagrams

Alain Wegmann

2000

Understanding replication in databases and distributed systems

André Schiper, Matthias Wiesmann, Fernando Pedone

Replication is an area of interest to both distributed systems and databases. The solutions developed from these two perspectives are conceptually similar but differ in many aspects: model, assumptions, mechanisms, guarantees provided, and implementation. ...

IEEE Computer Society Technical Commitee on Distributed Processing2000

Role is an , a Foundation for the Concept of Role

Alain Wegmann

Standardization experts in object modelling are having difficulties with defining the concept of role; for example, they are not sure of whether role is a type or an instance concept. This issue is a source of confusion in the UML standard, and prevents IS ...

2000

Photoemission experiments on high-T-c superconductors: Recent progress and some open questions

Giorgio Margaritondo, Davor Pavuna

We summarize some of the main results on photoemission spectroscopy in the field of high T-c superconductivity, beginning with a discussion of several open questions. We then briefly analyze our experiments that illustrate the role of doping and of intenti ...

2000

Understanding Replication in Databases and Distributed Systems

André Schiper, Matthias Wiesmann, Fernando Pedone

1999

Accountable Anonymous Access to Services in Mobile Communication Systems

Jean-Pierre Hubaux, Levente Buttyan

We introduce a model that allows anonymous yet accountable access to services in mobile communication systems. This model is based on the introduction of a new business role, called the customer care agency, and a ticket based mechanism for service access. ...

1999

Accountable Anonymous Service Usage in Mobile Communication Systems

Jean-Pierre Hubaux, Levente Buttyan

We introduce a model that allows of anonymous yet accountable service usage in mobile communication systems. This model is based on the introduction of a new business role, called the customer care agency, and a ticket based mechanism for service access. W ...

1999