The transverse current profile in the Next Linear Collider Test Accelerator (NLCTA) electron beam can be monitored at several locations along the beam line by means of profile monitors. These consist of insertable phosphor screens, light collection and transport systems, CID cameras, a frame-grabber, and PC and VAX based image analysis software. In addition to their usefulness in tuning and ste...

The transverse current profile in the Next Linear Collider Test Accelerator (NLCTA) electron beam can be monitored at several locations along the beam line by means of profile monitors. These consist of insertable phosphor screens, light collection and transport systems, CID cameras, a frame-grabber, and PC and VAX based image analysis software. In addition to their usefulness in tuning and ste...

Software entities (software products or processes) are characterized by many attributes, each one in its turn can be measured by one or more measures. In several cases the software entities have to be evaluated as a whole, thus raising the problem of aggregating measures to give an overall, single view on the software entity. This paper presents a method to aggregate measures, which works compa...

Small software enterprises have become interesting for international standardization. An example is the emerging standard that defines profiles for software lifecycle processes in very small enterprises. We analyze the structure of the process model used in the profiles and present the results as class diagrams. The analysis points out some issues related to balance, consistency and traceabilit...

There has been considerable recent interest in network motif for understanding network local features, as well as the growth and evolution mechanisms. In order to discover the local features in software networks, we extended the network motif research methods to software domain. After comparing triad significance profiles from 138 java open source software packages, we found three typical kinds...

This paper proposes a UML profile for software product lines. This profile includes stereotypes, tagged values, and structural constraints and it makes possible to define PL models with variabilities. Product derivation consists in generating product models from PL models. The derivation should preserve and ensure a set of constraints which are specified using the OCL.

To formally describe architectures of software systems, specific languages called Architecture Description Languages (ADLs) have been developed by academic institutions and research labs. However, more and more research and industrial projects are using the standard Unified Modeling Language (UML) for representing software architectures of systems. In this paper, we focus on how to extend the U...