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To remain competitive, organizations are challenged to make informed and feasible value-driven design decisions in order to ensure the quality of their software systems. However, there is a lack of support for evaluating the economic impact of these decisions with regard to software reference architectures. This damages the communication among architects and management, which can result in poor...

ion that we call elaborationpoints. The ability to “drill down” from a contextual view, through logical, to physical architectural constructs is a powerful approach that supports both usability and the widest possible reuse. Currently we are using the terms initial to describe the architectural elaboration point with minimal constraints, logical for the set of designs that include network topol...

Archery is a language for behavioural modelling of architectural patterns, supporting hierarchical composition and a type discipline. This paper extends Archery to cope with the patterns' structural dimension through a set of (re-)con guration combinators and constraints that all instances of a pattern must obey. Both types and instances of architectural patterns are semantically represented as...

This paper introduces an approach for describing and selecting architectural patterns for parallel programming, according to the requirements of order of data and computations of the problem and the nature of their processing components, using pattern descriptions.

Middleware technologies change so rapidly that designers must adapt existing software architectures to incorporate new emerging ones. This paper proposes an architectural pattern and guidelines to abstract the communication barrier whereby allowing the developer to concentrate on the application logic. We demonstrate our approach and the feasibility of easily upgrading the middleware infrastruc...

n = 1: 1 = 0 + 1; n = 2 (prime): 2 = 1 + 1; n = 3 (prime) is not a sum of two squares. n = 4: 4 = 2 + 0. n = 5 (prime): 5 = 2 + 1. n = 6 is not a sum of two squares. n = 7 (prime) is not a sum of two squares. n = 8: 8 = 2 + 2. n = 9: 9 = 3 + 0. n = 10: 10 = 3 + 1. n = 11 (prime) is not a sum of two squares. n = 12 is not a sum of two squares. n = 13 (prime): 13 = 3 + 2. n = 14 is not a sum of t...

In software architecting process, architects use architectural patterns as reusable architectural knowledge for architectural synthesis. However, it has been observed that the resulting architecture does not always conform to the initial architectural patterns employed. Architectural synthesis using architectural patterns is also recognized as a challenging task, especially for novice architect...

In this paper we examine emerging ways to describe and structure learning material, learning tasks and learning situations. In particular, we consider three different approaches, looking at common issues and differences in emphasis. The approaches are: learning patterns [1], inspired by the architectural patterns of Alexander [2]; learning design, as described in the IMS Learning Design specifi...

A new software architectural model for the archival of slide-based presentations on the Internet is proposed. This architecture is based on the concept of the “lecture object,” a persistent format, independent of the lecture production and viewing technology. The work has been undertaken in the context of the Web Lecture Archive Project, a collaboration of the CERN HR Division Training and Deve...