Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 182 for “"Real-Time Systems"”.
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Scalability in Real-Time Systems
… and complexity of applications that run in real-time environments have posed demanding requirements on the part of the real-time system designer. It has now become important to accommodate the application complexity at early stages of the design cycle. Further, the stringent demands to …
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Building flexible real-time systems
Programs for hard real-time systems have stringent timing requirements. Real-time programs are usually designed for the worst-case situation, which makes them inefficient. We argue that real-time programs should be more flexible, resulting in systems which can respond to dynamic environments. …
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Scheduling Algorithms for Real-Time Systems
Real-time systems are those whose correctness depends not only on logical results of computations, but also on the time at which the results are produced. This thesis provides a formal definition for real-time systems and includes the following original contributions on real-time scheduling …
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Requirements modelling of real-time systems
Real-time systems are characterised by the critical nature of their missions, and the demanding environment with which they interact. Real-time systems are used for dedicated applications. Every application is the subject of special requirements enforced by the customer. Considering the vital role …
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Compiling Java for Real-Time Systems
… need for better programming languages and run-time platforms than is used today. Key concepts, such as portability, scalability, and real-time performance, have been defined, which need to be fulfilled for Java to be a viable programming language for hard real-time systems. In order to fulfill …
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Scheduling in multiple processor real-time systems.
… scheduling heuristic rules on the design of Real-Time Systems (RTS) which allow for the execution of complex responses. Complex responses are characterized by the concurrent nature of activity execution. RTS design will be done through the use of a simulator which allows for the selection of …
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Timing Analysis of Embedded Real -Time Systems
… derivation and validation for reactive and real-time embedded systems. We assume that such a system is structured into its tasks, and the structure is modeled using a task graph. Our solution uses the timing behavior committed by the environment to the system first to derive the timing …
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Cache memory management in real-time systems
Dependable real-time systems are essential to time-critical applications. The systems that run these applications require high degrees of performance and predictability. Although memory caching has long been known as a means of increasing system performance, it is typically unpredictable in nature.
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Structuring real-time systems using performance polymorphism
Sophisticated and flexible real-time systems will often use several versions of a program fragment that performs a particular action. These versions will differ only in their performance parameters, such as the time required, the resources consumed, and the precision of the results. This paper …
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Attacking schedule indistinguishability in real-time systems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Efficient system auditing for real-time systems
… and glean insights from, generic computing systems. The information obtained by auditing systems can be used to detect and explain suspicious activity, from fault/error diagnosis to intrusion detection and forensics after security incidents. While such mechanisms would be beneficial for …
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Priority Assignment Algorithms for Real-Time Systems
… problems in the scheduling of fixed-priority real-time systems, which requires both timely response and correctness of output under specified timing constraints. As the models and hardware platforms of real-time systems become increasingly more complex, it is necessary to consider various …
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Utility-Aware Scheduling of Stochastic Real-Time Systems
Time utility functions offer a reasonably general way to describe the complex timing constraints of real-time and cyber-physical systems. However, utility-aware scheduling policy design is an open research problem. In particular, scheduling policies that optimize expected utility accrual are needed …
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Improved Symbolic Model Checking of Real-Time Systems
It is important to verify the correctness of real-time systems before launching them. Although there exist many studies on real-time model checking, it is worth noting that current techniques still encounter the state space explosion problem. The aim of this thesis is to study the symbolic model …
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Virtual Execution Environment for Robust Real -Time Systems
… performance of VEER by comparing the existing real-time embedded systems and the migrated and reorganized version of the same systems. The performance overhead of RT-VMM is about 1.7% if self-contained, or up to 4.7% if networked in our experimental setup.
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Data Temporal Consistency in Hard Real-Time Systems
… maintaining temporal consistency of data in hard real-time systems. In our model, a hard real-time system consists of periodic tasks which are either sensor transactions, read-only transactions or update transactions. Such periodic transactions are typically scheduled by priority-driven, …
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A wireless controlled robot real-time systems laboratory
… by the department on the enrollment in CS424 Real-Time Systems due to its low enrollment. The result of that pressure was a curriculum update, removal of the CS431 Embedded Systems course requirement, and the inclusion of a laboratory section similar to CS431 which had superior enrollment. …
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A SIMD architecture for hard real-time systems
Emerging safety-critical systems require high-performance data-parallel architectures and, problematically, ones that can guarantee tight and safe worst-case execution times. Given the complexity of existing architectures like GPUs, it is unlikely that sufficiently accurate models and algorithms …
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A scheduling analysis tool for real-time systems
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Defending Real-Time Systems through Timing-Aware Designs
Real-time computing systems are those that are designed to achieve computing goals by certain deadlines. Real-time computing systems are present in everything from cars to airplanes, pacemakers to industrial-control systems, and other pieces of critical infrastructure. With the increasing …
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