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7 results on '"Johnson, Pontus"'

1. Model-Driven Development of Service Compositions for Enterprise Interoperability

Author

Khadka, Ravi, Sapkota, Brahmananda, Ferreira Pires, Luis, Jansen, Slinger, van Sinderen, Marten J., and Johnson, Pontus

Subjects
Enterprise architecture framework, Engineering, Service (systems architecture), IR-76590, business.industry, Interoperability, Enterprise architecture, Semantic interoperability, Enterprise interoperability, Enterprise architecture management, Enterprise life cycle, Systems engineering, METIS-277602, business, Software engineering, EWI-19957, SCS-Services
Abstract

Service-Oriented Architecture (SOA) has emerged as an architectural style to foster enterprise interoperability, as it claims to facilitate the flexible composition of loosely coupled enterprise applications and thus alleviates the heterogeneity problem among enterprises. Meanwhile, Model-Driven Architecture (MDA) aims at facilitating the development of distributed application functionality, independent from its implementation using a specific technology platform and thus contributes to deployment in different platforms. In this paper we propose an MDA-based transformation technique for service composition. The contribution of the paper is two-fold. First, our approach shows how enterprise interoperability is supported by service composition at two different technical levels, namely at choreography and orchestration level. Second, the approach contributes to the management of changes that affect enterprise interoperability, by defning a (semi-)automated transformation from choreography to orchestrations in which the interoperability constraints specified at the choreography level are preserved.

Published
2011
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5. An architecture framework for enterprise IT service availability analysis.

Author

Franke, Ulrik, Johnson, Pontus, and König, Johan

Subjects
*SYSTEMS availability, *MODEL-driven software architecture, *FAULT trees (Reliability engineering), *INFORMATION technology, *SOFTWARE frameworks, *SOFTWARE engineering
Abstract

This paper presents an integrated enterprise architecture framework for qualitative and quantitative modeling and assessment of enterprise IT service availability. While most previous work has either focused on formal availability methods such as fault trees or qualitative methods such as maturity models, this framework offers a combination. First, a modeling and assessment framework is described. In addition to metamodel classes, relationships and attributes suitable for availability modeling, the framework also features a formal computational model written in a probabilistic version of the object constraint language. The model is based on 14 systemic factors impacting service availability and also accounts for the structural features of the service architecture. Second, the framework is empirically tested in nine enterprise information system case studies. Based on an initial availability baseline and the annual evolution of the 14 factors of the model, annual availability predictions are made and compared with the actual outcomes as reported in SLA reports and system logs. The practical usefulness of the method is discussed based on the outcomes of a workshop conducted with the participating enterprises, and some directions for future research are offered. [ABSTRACT FROM AUTHOR]

Published
2014
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6. 2nd SEMAT Workshop on a General Theory of Software Engineering (GTSE 2013).

Author

Johnson, Pontus, Goedicke, Michael, Jacobson, Ivar, and Kajko-Mattsson, Mira

Subjects
ADULT education workshops, SOFTWARE engineers, COMPUTER software conferences, SOFTWARE engineering conferences, COMPUTER software industry, CONFERENCES & conventions
Abstract

Most academic disciplines emphasize the importance of their general theories. Examples of well-known general theories include the Big Bang theory, Maxwell's equations, the theory of the cell, the theory of evolution, and the theory of demand and supply. Less known to the wider audience, but established within their respective fields, are theories with names such as the general theory of crime and the theory of marriage. Few general theories of software engineering have, however, been proposed, and none have achieved significant recognition. This workshop, organized by the SEMAT initiative, aims to provide a forum for discussing the concept of a general theory of software engineering. The topics considered include the benefits, the desired qualities, the core components and the form of a such a theory. [ABSTRACT FROM AUTHOR]

Published
2013

7. Where's the Theory for Software Engineering?

Author

Johnson, Pontus, Ekstedt, Mathias, and Jacobson, Ivar

Subjects
*SOFTWARE engineering, *THEORY, *INFORMATION technology, *ENGINEERING & society, *PARADIGMS (Social sciences), *PHILOSOPHY
Abstract

Darwin's theory of natural selection, Maxwell's equations, the theory of demand and supply; almost all established academic disciplines place great emphasis on what their core theory is. This is not, however, the case in software engineering. What is the reason behind the software engineering community's apparent indifference to a concept that is so important to so many others? [ABSTRACT FROM PUBLISHER]

Published
2012
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