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The growing number of UML profiles and the resulting extensive application of stereotypes, is turning the modeling process error-prone. In order to constrain their uses, OCL lacks mechanisms for effective evaluation of stereotypes and is sometimes cumbersome. This paper describes a set of mechanisms that allow more intuitive constraint specification. They exploit the meta-model architecture to constrain a model with a focus on use of stereotypes. Two examples are given to illustrate their applicability. A dedicated assessment tool is also described. [ABSTRACT FROM AUTHOR]

A system family model (SFM) contains a set of common elements and a set of variable elements known as variation points. Variability modeling is a source of numerous problems: how to express variations, how to ensure the consistency of various views and avoid conflicts. Does the SFM cover all the desired systems? To obtain a specific system, known as "derivation", also known as a product, it is necessary to choose certain variation points from among those included in the SFM model by using a feature model (built during application domain analysis) or a decision model (after SF modelling). The SyF approach presented in this article proposes the "variation point propagation" concept as a means for achieving consistency and dealing with potential conflicts between variations. Under this approach, a decision model, generated from the SFM alone, then enables system family management: analyze coverage of the SF application domain, automate the derivation. [ABSTRACT FROM AUTHOR]

Even if promising with respect to software complexity management, component-based approaches, like CCM and EJB, have until now fall short in achieving their breakthrough in the real-time and embedded community. Our aim is to adapt one of these approaches - namely the CCM - to the specific needs of this area. In such a process, we have identified several crucial points, among which is interaction management. The current CCM runtime interaction support is actually poor and lacks flexibility. That is the reason why, drawing our inspiration from similar works of the ADLs field, we propose to gather all interaction-related processing in connectors. This paper details the rationale underlying our choice, and outlines all modifications needed to introduce the connector meta-element in the CCM. It also illustrates the relevance of CCM connectors in the scope of a telecommunication use case. [ABSTRACT FROM AUTHOR]