Theorem 0.1. Let K be an abstract elementary class (AEC) with amalgamation and no maximal models. Let λ > LS(K). If K is categorical in λ, then the model of cardinality λ is Galois-saturated. This answers a question asked independently by Baldwin and Shelah. We deduce several corollaries: K has a unique limit model in each cardinal below λ, (when λ is big-enough) K is weakly tame below λ, and t...

CIMsteel Integration Standard, Version 2 (CIS/2) is an industry-developed product model based on ISO-STEP technology that has been widely adopted within the steel construction industry. CIS/2 is an early success story of broad use of a product model for both data exchange and improving the productivity of those companies taking advantage of its capabilities. Here, we review the history of CIS/2...

AEC practitioners commonly use discipline-specific computer-based information modeling and analysis processes today. However, these practitioners lack simple, flexible, formal frameworks to communicate and integrate these processes and information amongst multiple disciplines. They therefore struggle to quickly and accurately achieve balanced and near-optimal multidisciplinary designs. To addre...

The cancellation of echoes is a vital component of telephony networks. In some cases the echo response that must be identified by the echo canceller is sparse, as for example when telephony traffic is routed over networks with unknown delay such as packet-switched networks. The sparse nature of such a response causes standard adaptive algorithms including normalized LMS to perform poorly. This ...

In the Architecture Engineering and Construction (AEC) sector, cooperation between actors is essential for project success. During the building construction activity, organization is both hierarchical, transversal and adhocratic. Moreover coordination mechanisms are strongly dependant on trust perception by the actors. New assistance tools have to integrate these heterogeneous parameters. The p...

Collaboration between designers in different disciplines is an increasingly important aspect in complex design situations, as exemplified in the AEC domain. CAD systems are essential for handling this complexity but current CAD modelling technology is directed towards the production of a single product model. In the AEC environment, many disciplines are involved, each with its own concept of th...

In the Architecture Engineering and Construction sector (AEC) cooperation between actors is essential for project success. The configuration of actors’ organization takes different forms like the associated coordination mechanisms. Our approach consists in analyzing these coordination mechanisms through the identification of the “base practices” realized by the actors of a construction project ...