7 research outputs found
SLA BASED FEDERATED E-MARITIME SERVICES
We consider a SOA based service engineering framework as a robust engineering approach to the elaboration and analysis of functional and quality requirements, as well the formal testing of architectural solutions of emerging e-maritime systemst. Autonomic systems and related architectural frameworks are considered towards engineering e-maritime services. E-maritime services’ interfaces, behavior, and service composition design and testing aspects are discussed. A SOA SLA approach is proposed so as to enable e-maritime service properties to be formally agreed, negotiated and offered over an e-maritime SOA platform
Un meta-modèle de composants pour la réalisation d'applications temps-réel flexibles et modulaires
The increase of software complexity along the years has led researchers in the software engineering field to look for approaches for conceiving and designing new systems. For instance, the service-oriented architectures approach is considered nowadays as the most advanced way to develop and integrate fastly modular and flexible applications. One of the software engineering solutions principles is re-usability, and consequently generality, which complicates its appilication in systems where optimizations are often used, like real-time systems. Thus, create real-time systems is expensive, because they must be conceived from scratch. In addition, most real-time systems do not beneficiate of the advantages which comes with software engineering approches, such as modularity and flexibility. This thesis aim to take real time aspects into account on popular and standard SOA solutions, in order to ease the design and development of modular and flexible applications. This will be done by means of a component-based real-time application model, which allows the dynamic reconfiguration of the application architecture. The component model will be an extension to the SCA standard, which integrates quality of service attributs onto the service consumer and provider in order to stablish a real-time specific service level agreement. This model will be executed on the top of a OSGi service platform, the standard de facto for development of modular applications in Java.La croissante complexité du logiciel a mené les chercheurs en génie logiciel à chercher des approcher pour concevoir et projéter des nouveaux systèmes. Par exemple, l'approche des architectures orientées services (SOA) est considérée actuellement comme le moyen le plus avancé pour réaliser et intégrer rapidement des applications modulaires et flexibles. Une des principales préocuppations des solutions en génie logiciel et la réutilisation, et par conséquent, la généralité de la solution, ce qui peut empêcher son application dans des systèmes où des optimisation sont souvent utilisées, tels que les systèmes temps réels. Ainsi, créer un système temps réel est devenu très couteux. De plus, la plupart des systèmes temps réel ne beneficient pas des facilités apportées par le genie logiciel, tels que la modularité et la flexibilité. Le but de cette thèse c'est de prendre en compte ces aspects temps réel dans des solutions populaires et standards SOA pour faciliter la conception et le développement d'applications temps réel flexibles et modulaires. Cela sera fait à l'aide d'un modèle d'applications temps réel orienté composant autorisant des modifications dynamiques dans l'architecture de l'application. Le modèle de composant sera une extension au standard SCA qui intègre des attributs de qualité de service sur le consomateur et le fournisseur de services pour l'établissement d'un accord de niveau de service spécifique au temps réel. Ce modèle sera executé sur une plateforme de services OSGi, le standard de facto pour le developpement d'applications modulaires en Java
Building information modeling – A game changer for interoperability and a chance for digital preservation of architectural data?
Digital data associated with the architectural design-andconstruction
process is an essential resource alongside -and even
past- the lifecycle of the construction object it describes. Despite
this, digital architectural data remains to be largely neglected in
digital preservation research – and vice versa, digital preservation
is so far neglected in the design-and-construction process. In the
last 5 years, Building Information Modeling (BIM) has seen a
growing adoption in the architecture and construction domains,
marking a large step towards much needed interoperability. The
open standard IFC (Industry Foundation Classes) is one way in
which data is exchanged in BIM processes. This paper presents a
first digital preservation based look at BIM processes,
highlighting the history and adoption of the methods as well as
the open file format standard IFC (Industry Foundation Classes)
as one way to store and preserve BIM data
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Managing change in services outsourcing: the influence of power and governance on implementation success
This research evaluates the change observed during the implementation of an outsourced application development within a large defence organisation in Europe. Whereas most extant research focuses on the firm level or dyadic relations this research aims to uncover how different outcomes can be explained by attending to the micro-processes and specific mechanisms of work between purposive actors as they create the new service.
The research was a longitudinal, six-year in-depth participant observation focused on the implementation of an HRM application carried out by six case organisations within a consortium formed to implement the service. The results of the field study are based on a grounded analysis from semi-structured interviews, focus groups, documents, and over 5,000 email communications involving a total of 62 stakeholders. A conceptual framework of neo-institutional theory, practice and power was used to analyse the process of change as the consortium worked together to deliver the outsourcing.
The findings showed that political goals and behaviour influenced and shaped the outsourcing implementation and exposed the systemic nature of conflict within a constrained project context. The high conflict observed was shown to negatively influence success and supports the notion that strong contracting is only effective in stable contexts. It was also shown that tight control can negatively impact collaboration, by reducing adaptability, forcing vendors to take an inflexible posture. This type of behaviour was observed to increase power and conflict within the project and buyers reacted by increasing control and applying sanctions. This resulting in increased conflict and was a form of feedback loop. The findings also showed control in general is ineffective and can be overwhelmed in situations where there is high demand uncertainty. These observations add to the outsourcing and power/political literature by showing the central role of power and conflict and suggests the final configuration of an outsourcing is a negotiated order that may be at variance to the original objectives.
Implications for practice:
From a practical perspective, managers should think carefully before rushing into tight preventative contracts and consider the complexity of the demanded service and degree of completeness in their requirements. High uncertainty can lead to outsourcing failure, conflict within the implementation, and unmet expectations, unless specific mechanisms are in place to mitigate this. Furthermore, embedding new work processes and procedures to manage the service within the buying organisation is fundamental to how outsourcing actually works. Buyers and suppliers must pay attention to the design and implementation of processes and routines to manage effective delivery of the outsourced service