News and Events
This week Hans Weigand and his PhD student Jeewani Jayasinghe from Tilburg University visited us for doing research on value based service modeling. We discussed the relationships between web services and “real” services and how conflicts can be detected when combining services. Hans also gave a presentation on value encounters as a means for capturing the logic of co-creation of value.
Lars Rönnbäck, Olle Regardt, Maria, Petia, and I have written a paper on a novel approach to database modeling, called anchor modeling. Lars and Olle, who work at Affecto, have developed this approach for some years now and they have applied it in several industrial projects. In the paper, we formalised, assessed, and evaluated anchor modeling. The paper was accepted at ER 2009.
Abstract
Maintaining and evolving data warehouses is a complex, error prone, and time consuming activity. The main reason for this state of affairs is that the environment of a data warehouse is in constant change, while the warehouse itself needs to provide a stable and consistent interface to information spanning extended periods of time. In this paper, we propose a modeling technique for data warehousing, called anchor modeling, that offers non-destructive extensibility mechanisms, thereby enabling robust and flexible management of changes in source systems. A key benefit of anchor modeling is that changes in a data warehouse environment only require extensions, not modifications, to the data warehouse. This ensures that existing data warehouse applications will remain unaffected by the evolution of the data warehouse, i.e. existing views and functions will not have to be modified as a result of changes in the warehouse model.
Monica Winge from Vinnova talked today about challenges and opportunities in e-health. One of the main challenges in today’s health care is to realise patient centered work processes. This is a complex task as many different care providers need to cooperate. IT systems and services could be a major enabler for this purpose, but still they are insufficient as they are often based on the care provider’s organisational views and not the needs of the patient.
Monica Winge has worked for a number of years at Karolinska Institutet, and she is presently at Vinnova. Monica has been the project leader of several e-health projects. She has been elected as one of “the 25 most powerful people in e-health in Sweden“.
MobiSams
MobiSams Paul Johannesson
AAL
AAL Paul Johannesson
Staffan Qvist at Mendix Sweden gave a presentation on Mendix for universities. Mendix delivers a powerful, model-driven application platform providing tools and architecture to rapidly design, build, test, integrate, deploy, manage and optimize dynamic business applications in any existing business and IT environment. Mendix technology uses graphical models – instead of code – to build dynamic applications.
Mendix Academy
Mendix Academy Paul Johannesson Presentation of Mendix
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Close to 40 people, 25 of which came from outside Sweden, visited the Value Modeling and Business Ontologies (VMBO) workshop, February 9 – 10 2009, organised by SYSLAB. The goals of the VMBO workshop were to bring together researchers with an interest in value modeling, REA systems, or the combination of the two, in order to present and discuss the current state of business modeling and to identify key areas for further research. The presentations ranged from a novel semantics of the REA ontology and guidelines for value model design to tools for visual business modelling and applications to enforcing control procedures.
Anders Tell from Toolsmiths gave a talk about effective e-tools for business people. Anders Tell has many years of experience of model driven architectures and has been active in several international standardisation organisations. Anders asked the question: Do business analysts, experts and practitioners have access to and knowledge of effective tools and models for carrying out business modeling, architecture, implementation, operations and follow-up? Thanks, Anders, for a thought inspiring seminar!
Today, we had the kick-off meeting for the SAMMET project – Methods for Customer Interactive Service Design. Representatives from SYSLAB, Linköping University, University of Skövde, Dataföreningen, Ericsson, SAS, Volvo, and Skatteverket participated in the meeting. We discussed the needs of the organisations, which ranged from novel e-services for citizens to interoperability architectures for global enterprises. Furthermore, the researchers presented a number of model and method components including tools for value and goal analysis, interaction design, and participative service modelling.
More information on SAMMET
Today Hans Weigand from Tilburg University gave a seminar on Adaptive Service Oriented Architecture. Hans has also been visiting us this week for continuing our previous work on service modelling and management. In particular, we have been discussing how services can be analyzed using REA and value modelling.