Image segmentation is one of the most common steps in digital image processing. The area many image segmentation algorithms (e.g., thresholding, edge detection, and region growing) employed for classifying a digital image into different segments. In this connection, finding a suitable algorithm for medical image segmentation is a challenging task due to mainly the noise, low contrast, and steep...

This article presents a complete scheme for the integration and the development of multi-periodic critical embedded systems. A system is formally specified as a modular and hierarchical assembly of several locally mono-periodic synchronous functions into a globally multi-periodic synchronous system. To support this, we introduce a real-time software architecture description language, named PREL...

It is commonly agreed that control implementation, being a resource-consuming endeavor, is not exerted continuously or in simple tasks. However, most research in the field was done using tasks that varied the need for control on a trial-by-trial basis (e.g., Stroop, flanker) in a discrete manner. In this case, the anterior cingulate cortex (ACC) was found to monitor the need for control, wherea...

This paper describes an implementation technique for Mul-tilisp's future construct aimed at large shared-memory multiprocessors. The technique is a variant of lazy task creation. The original implementation of lazy task creation described in Mohr, 1991] relies on ef-cient shared memory to distribute tasks between processors. In contrast , we propose a task distribution method based on a message...

When performing tasks, humans are thought to adopt task sets that configure moment-to-moment data processing. Recently developed mixed blocked/event-related designs allow task set-related signals to be extracted in fMRI experiments, including activity related to cues that signal the beginning of a task block, "set-maintenance" activity sustained for the duration of a task block, and event-relat...

Model-based design of embedded control systems using Synchronous Reactive (SR) models is among the best practices for software development in the automotive and aeronautics industry. Previous research focused on the concurrent implementation of the dataflow part of SR models, including the optimization of the block-to-task mapping and the optimization of the communication buffers. When the syst...

Electromagnetic computations, where the wavelength is small in relation to the geometry of interest, become computationally demanding. In order to manage computations for realistic problems like electromagnetic scattering from aircraft, the use of parallel computing is essential. In this paper, we describe how a solver based on a hierarchical nested equivalent source approximation can be implem...

The algorithm given on page 6 may deadlock because communications do not follow the directedness of the tree but may occur in either direction. The algorithm, and its proof, are correct if we restrict ourselves to trees, rather than RDAG`s. RDAG's ((1]) do not contain directed cycles, but may contain cycles. In those cases the algorithm, and the 'proof' of the absence of deadlock on p.7 are inc...

The OmpSs programming model supports task-based parallelism in a similar manner to OpenMP. This whitepaper explores the possibility of implementing an energy-aware scheduling policy in run-time component of the OmpSs programming model, to adapt task execution schedules for balancing energy efficiency with parallel performance. A high-level design description of a run-time scheduling plugin to a...

Design is conceptualized as an ill-structured process that requires diverse knowledge that is hard to acquire. Systematic analysis of design and the knowledge requirements is has in general and in the context of bridge design shows that the knowledge needed can be semi-automatically acquired by using machine learning techniques. Although there are limitations to the approach, preliminary result...