Probabilistic structural design tends to apply higher safety factors to inexpensive or light-weight components, because it is a more efficient way to achieve a desired level of safety. We show that even with limited knowledge about stress probability distributions we can increase the safety of an airplane by following this paradigm. This is accomplished by a small perturbation of the determinis...

We discuss the future of high-level modelling in the context of system-level design, as the two concepts are inextricably interlinked. This is described as several possible methodology scenarios for the future of system level design as it unfolds within the electronics industry. Although these scenarios are presented as orthogonal, of course in actual fact the future may present us several of t...

This paper discusses the use of design patterns during the transition phase from analysis to design of object-oriented systems. Pattern mining, which is the process of finding and documenting design patterns, usually takes place during or after the development of a software system. This paper introduces several new design patterns that were discovered through the experience of teaching object-o...

Reliability models of longevity can be usefully extended in several directions. In particular, rather than simply optimizing parameters within a structure that is tightly defined a priori, it may be more illuminating to examine interactions between highand low-level design decisions, by analogy with the engineering principle of ”Total Quality Management.” The sources of decay are more various a...

Safety assessment is a well-established process for assuring the safety and reliability of critical (aeronautical) systems. It uses probabilistic (quantitative) analysis to provide precise measures about the safety requirements of a system. Traditionally, quantitative safety assessment uses fault-tree analysis, but certification authorities also allow the use of Markov models. In this paper we ...

System-level design is characterized by a behavioral specification and heterogeneous hardware/software implementations. Exploring the design space is essential for good design. Specifying and managing complex design flows, tracking dependencies and tool invocations, and maintaining consistency of design data and flows are key issues that enable efficient design space exploration. In order to ma...

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System-level design techniques promise a way to lessen the productivity gap between fabrication and design. Unfortunately, these techniques have been slow to catch on, in part because they do little to help designers optimize hardware. This paper presents a brief summary of three system-level design techniques, Platform-based design, SystemC, and Chip-in-a-day, in order to propose that more sys...

BACKGROUND This paper describes the methods for an observational comparative effectiveness research study designed to test the association between practice-level medical home characteristics and asthma control in children and adults receiving care in safety-net primary care practices. METHODS This is a prospective, longitudinal cohort study, utilizing survey methodologies and secondary analys...

As microprocessor-based systems grow in complexity, and the processor-memory speed gap widens further, more emphasis needs to be placed on early design space exploration in order to produce the highest performance systems with minimal schedule impact. We discuss the critical issues associated with architectural evaluation of complex microprocessor-based systems, and present a methodology for th...