Sökning: "real time systems"

Visar resultat 16 - 20 av 1432 avhandlingar innehållade orden real time systems.

1. 16. Towards a Predictable Component-Based Run-Time System

   Författare :Rafia Inam; Mikael Sjödin; Jukka Mäki-Turja; Tullio Vardanega; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; real-time systems; component based software engineering; hierarchical scheduling; Computer Science; datavetenskap;

   Sammanfattning : In this thesis we propose a technique to preserve the temporal properties of realtime components during their integration and reuse. We propose a new concept of runnable virtual node which is a coarse-grained real-time component that provides functional and temporal isolation with respect to its environment. LÄS MER

3. 17. Real-Time Time Metrology Using Space Geodetic Methods

   Författare :Carsten Rieck; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; VLBI; Time metrology; UTC; TAI; time link combination; carrier phase; time transfer; real-time filtering; GNSS;

   Sammanfattning : Two main objectives in time and frequency metrology are the realization of the SI unit of time, and the construction and dissemination of atomic time scales based on the SI second. This thesis is mainly concerned with the latter of the two and has investigated the characteristics of space geodetic time and frequency comparison methods. LÄS MER

4. 18. !secure(system) <=?=> !safe(system) : On Security and Safety of Industrial Software Systems

   Författare :Marcus Lindner; Per Lindgren; Valeriy Vyatkin; Knut Åkesson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; embedded systems; hard real-time; concurrency; model of computation; safety-critical; safety; security; industrial automation; RTFM; real-time for the masses; Embedded Systems; Inbyggda system;

   Sammanfattning : The focus of our research work is on readily accessible, embedded, real-time development with concurrency support. To this end, we develop the Real-Time For the Masses (RTFM) programming framework with a model of computation based on tasks and resources and that stipulates a timing semantics. LÄS MER

5. 19. Satisfying Non-Functional Requirements in Model-Driven Development of Real-Time Embedded Systems

   Författare :Mehrdad Saadatmand; Mikael Sjödin; Antonio Cicchetti; Radu Dobrin; Paul Pop; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; non-functional requirements; model-driven development; real-time; embedded systems; Computer Science; datavetenskap;

   Sammanfattning : Design of real-time embedded systems is a complex and challenging task. Part of this complexity originates from their limited resources which incurs handling a big range of Non-Functional Requirements (NFRs). Therefore, satisfaction of NFRs plays an important role in the correctness of the design of these systems. LÄS MER

7. 20. Modeling and Timing Analysis of Industrial Component-Based Distributed Real-time Embedded Systems

   Författare :Saad Mubeen; Mikael Sjödin; Jukka Mäki-Turja; Per Lindgren; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Distributed real-time embedded systems; component-based development; holistic response-time analysis; component model; timing model; Computer Science; datavetenskap;

   Sammanfattning : The model- and component-based development approach has emerged as an attractive option for the development of Distributed Real-time Embedded (DRE) systems. In this thesis we target several issues such as modeling of legacy communication, extraction of end-to-end timing models and support for holistic response-time analysis of industrial component-based DRE systems. LÄS MER