We address the problem of software invisibility and seek means to improve the comprehensibility of software. Architectural schemata are defined as visual “roadmaps” to the design of object oriented programs and construed in a formal language. We present LePUS Schemata, a formal language whose expressions convey architectural configurations and demonstrate its use in documenting the design, arch...

This paper investigates a method for modelling computersupported cooperative work, to provide a common language for users and developers collaborating in design. The research is grounded in an empirical study of the inhouse development of groupware and the work practice of system developers. Through an appropriation of Christopher Alexander’s architectural pattern language, it is proposed that ...

Non-Functional Requirements (NFRs) and constraints are among the principal drivers of architectural decision-making. NFRs are improved or damaged by architectural decisions (ADs), while constraints directly include or exclude parts of the architecture (e.g., logical components or technologies). We may determine the impact of an AD, or which parts of the architecture are affected by a constraint...

In this paper we study the Casimir effect for conformally coupled massless scalar fields on background of Static dS 4+1 spacetime. We will consider the general plane– symmetric solutions of the gravitational field equations and boundary conditions of the Dirichlet type on the branes. Then we calculate the vacuum energy-momentum tensor in a configuration in which the boundary branes are moving b...

Nowadays, context-aware systems are developed by gathering context data and adapting systems behavior accordingly. The purpose of this paper is to examine four architectural pattern context-aware systems in terms of the ability to be implemented. The pattern which can overcome the complexity of these systems and can be more extensible is better to be implemented. This paper is based on a review...

We propose a CAAD environment for non-designers. It is a new way to enable effective user participation during the design process. This CAAD environment contains an encapsulation of design knowledge and utilises information filtering as an interface to the design knowledge. Two prototypes are implemented as testbeds. So far, our experience has suggested that the approach has a promising future.

Technology firms are increasingly opening up their products to develop an active ecosystem of developing partners around it. Both opening up products and organizing a developer ecosystem around an organization are non-trivial. In this paper we provide a case study of a leading communications technology firm that opened up and platformized 11 product lines. First, we identify and describe four a...

Definitions of software architecture abound. We’ve been collecting definitions from visitors to our Web site (http://www.sei.cmu.edu/architecture/definitions.html) and already have received dozens. However, we are interested not only in understanding the term “software architecture” but in clarifying the difference between architecture and other related terms such as “design” and “implementatio...

Architectural patterns aid developers in resolving coarse-grained integration problems among components. These patterns are assembled from functionality slices that resolve various communication problems between applications. However, little attention has been paid to how interoperability problems and their resolution are embodied in these patterns. Mapping these problems to specific functional...