Exploiting Queuing Networks to Model and Assess the Performance of Self-Adaptive Software Systems: A Survey

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A systematic review of applying modern software engineering techniques to developing robotic systems

Robots have become collaborators in our daily life. While robotic systems become more and more complex, the need to engineer their software development grows as well. The traditional approaches used in developing these software systems are reaching their limits; currently used methodologies and tools fall short of addressing the needs of such complex software development. Separating robotics knowledge from shortcycled implementation technologies is essential to foster reuse and maintenance. This paper presents a systematic review (SLR) of the current use of modern software engineering techniques for developing robotic software systems and their actual automation level. The survey was aimed at summarizing existing evidence concerning applying such technologies to the field of robotic systems to identify any gaps in current research to suggest areas for further investigation and provide a background for positioning new research activities.Los robots se han convertido en colaboradores habituales de nuestra vida diaria. Los sistemas robóticos son cada vez más complejos y, como consecuencia, crece la necesidad de aplicar nuevas técnicas ingenieriles a su proceso de desarrollo. Los enfoques tradicionales que se utilizan en el proceso de desarrollo de estos sistemas de software están alcanzando sus límites; las metodologías utilizadas actualmente y las herramientas de soporte no alcanzan para atender las necesidades de estos procesos complejos. Para fomentar la reutilización y el mantenimiento de código es esencial separar el conocimiento estable del dominio de robótica en las tecnologías de implementación, que varían rápidamente. Este artículo presenta una revisión sistemática de la utilización actual de técnicas modernas de ingeniería de software en el desarrollo de sistemas robóticos y su nivel de automatización. El objetivo del estudio es el de resumir la evidencia existente respecto a la aplicación de dichas tecnologías en el campo de los sistemas robóticos para identificar carencias en la investigación actual con el fin de sugerir áreas en futuras propuestas y proporcionar las bases para posicionar adecuadamente nuevas actividades de investigación

Achieving Autonomic Web Service Compositions with Models at Runtime

Over the last years, Web services have become increasingly popular. It is because they allow businesses to share data and business process (BP) logic through a programmatic interface across networks. In order to reach the full potential of Web services, they can be combined to achieve specifi c functionalities. Web services run in complex contexts where arising events may compromise the quality of the system (e.g. a sudden security attack). As a result, it is desirable to count on mechanisms to adapt Web service compositions (or simply called service compositions) according to problematic events in the context. Since critical systems may require prompt responses, manual adaptations are unfeasible in large and intricate service compositions. Thus, it is suitable to have autonomic mechanisms to guide their self-adaptation. One way to achieve this is by implementing variability constructs at the language level. However, this approach may become tedious, difficult to manage, and error-prone as the number of con figurations for the service composition grows. The goal of this thesis is to provide a model-driven framework to guide autonomic adjustments of context-aware service compositions. This framework spans over design time and runtime to face arising known and unknown context events (i.e., foreseen and unforeseen at design time) in the close and open worlds respectively. At design time, we propose a methodology for creating the models that guide autonomic changes. Since Service-Oriented Architecture (SOA) lacks support for systematic reuse of service operations, we represent service operations as Software Product Line (SPL) features in a variability model. As a result, our approach can support the construction of service composition families in mass production-environments. In order to reach optimum adaptations, the variability model and its possible con figurations are verifi ed at design time using Constraint Programming (CP). At runtime, when problematic events arise in the context, the variability model is leveraged for guiding autonomic changes of the service composition. The activation and deactivation of features in the variability model result in changes in a composition model that abstracts the underlying service composition. Changes in the variability model are refl ected into the service composition by adding or removing fragments of Business Process Execution Language (WS-BPEL) code, which are deployed at runtime. Model-driven strategies guide the safe migration of running service composition instances. Under the closed-world assumption, the possible context events are fully known at design time. These events will eventually trigger the dynamic adaptation of the service composition. Nevertheless, it is diffi cult to foresee all the possible situations arising in uncertain contexts where service compositions run. Therefore, we extend our framework to cover the dynamic evolution of service compositions to deal with unexpected events in the open world. If model adaptations cannot solve uncertainty, the supporting models self-evolve according to abstract tactics that preserve expected requirements.Alférez Salinas, GH. (2013). Achieving Autonomic Web Service Compositions with Models at Runtime [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/34672TESI

User Interface Plasticity: Model Driven Engineering to the Limit!

Keynote paper.International audienceTen years ago, I introduced the notion of user interface plasticity to denote the capacity of user interfaces to adapt, or to be adapted, to the context of use while preserving usability. The Model Driven Engineering (MDE) approach, which was used for user interface generation since the early eighties in HCI, has recently been revived to address this complex problem. Although MDE has resulted in interesting and convincing results for conventional WIMP user interfaces, it has not fully demonstrated its theoretical promises yet. In this paper, we discuss how to push MDE to the limit in order to reconcile high-level modeling techniques with low-level programming in order to go beyond WIMP user interfaces

Revisión sistemática de la aplicación de técnicas modernas de ingeniería de software al desarrollo de sistemas robóticos

Los robots se han convertido en colaboradores habituales de nuestra vida diaria. Los sistemas robóticos son cada vez más complejos y, como consecuencia, crece la necesidad de aplicar nuevas técnicas ingenieriles a su proceso de desarrollo. Los enfoques tradicionales que se utilizan en el proceso de desarrollo de estos sistemas de software están alcanzando sus límites; las metodologías utilizadas actualmente y las herramientas de soporte no alcanzan para atender las necesidades de estos procesos complejos. Para fomentar la reutilización y el mantenimiento de código es esencial separar el conocimiento estable del dominio de robótica en las tecnologías de implementación, que varían rápidamente. Este artículo presenta una revisión sistemática de la utilización actual de técnicas modernas de ingeniería de software en el desarrollo de sistemas robóticos y su nivel de automatización. El objetivo del estudio es el de resumir la evidencia existente respecto a la aplicación de dichas tecnologías en el campo de los sistemas robóticos para identificar carencias en la investigación actual con el fin de sugerir áreas en futuras propuestas y proporcionar las bases para posicionar adecuadamente nuevas actividades de investigación.Robots have become collaborators in our daily life. While robotic systems become more and more complex, the need to engineer their software development grows as well. The traditional approaches used in developing these software systems are reaching their limits; currently used methodologies and tools fall short of addressing the needs of such complex software development. Separating robotics knowledge from shortcycled implementation technologies is essential to foster reuse and maintenance. This paper presents a systematic review (SLR) of the current use of modern software engineering techniques for developing robotic software systems and their actual automation level. The survey was aimed at summarizing existing evidence concerning applying such technologies to the field of robotic systems to identify any gaps in current research to suggest areas for further investigation and provide a background for positioning new research activities.Facultad de Informátic

08331 Abstracts Collection -- Perspectives Workshop: Model Engineering of Complex Systems (MECS)

From 10.08. to 13.08.2008, the Dagstuhl Seminar 08331 ``Perspectives Workshop: Model Engineering of Complex Systems (MECS)\u27\u27 was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available

TUNeEngine : An Adaptable Autonomic Administration System

International audienceThe Autonomic Administration technology has proved its efficiency for the administration of complex com-puting systems. However, experiments conducted with several Autonomic Administration Systems (AAS) revealed the need to adapt the AAS according to the administrated system or the considered administration facet. Consequently, users usually have to adapt even to re-implement the AAS according to their specific needs but these tasks require high expertise on the AAS implementation that users do not necessarily have. In this paper we propose a service-oriented components approach to build a generic, flexible, and useful AAS. We present an implementation of this approach, the design principles and the prototype called TUNeEngine. We illustrate the flexibility of this prototype through the administration of a complex computing system which is a virtualized cloud platform