Manuel Almeida

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This paper suggests tools that provide significant improvements in the design and verification of FPGA-based digital circuits. These tools include reusable specifications of hardware components (modules) that have been proposed for two types of CAD environments; Xilinx ISE 5.x and Celoxica DK1. The components can be employed to implement both(More)
This paper describes the developed hardware/software tools, libraries and design methods for FPGA-based embedded systems which include: a kernel prototyping board with the Xilinx Spartan 3 FPGA; a set of projects for reusable FPGA-based circuits; utilities for FPGA programming; software/hardware tools that provide support for reconfiguration; and programs(More)
Electronic devices used in the scope of robotics and embedded systems have to be adapted to numerous external events and many of them might be unknown in advance. This application-specific particularity requires environment-specific adaptation and frequent changes in the pre-defined behaviour. In general, all feasible functionality cannot be incorporated in(More)
Atrial fibrillation is the most common cardiac arrhythmia, and its prevalence is increasing. Cardioembolic stroke, most of the times secondary to thrombus formation in the left atrial appendage, is its most feared and life threatening consequence. Oral anticoagulation with vitamin-K-antagonists is currently the most used prophylaxis for stroke in patients(More)
Coronary subclavian steal syndrome is a rare ischemic cause in patients after myocardial revascularization surgery. Subclavian artery stenosis or compression proximal to the internal mammary artery graft is the underlying cause. The authors present a clinical case of a patient with previous history of non-ST elevation myocardial infarction, triple coronary(More)
BACKGROUND The revascularization strategy of the left main disease is determinant for clinical outcomes. OBJECTIVE We sought to 1) validate and compare the performance of the SYNTAX Score 1 and 2 for predicting major cardiovascular events at 4 years in patients who underwent unprotected left main angioplasty and 2) evaluate the long-term outcome according(More)
BACKGROUND Fewer bleeding complications and early ambulation make radial access a privileged route for cardiac catheterization. However, transradial (TR) approach is not always successful, requiring its conversion into femoral access. OBJECTIVES To evaluate the rate of conversion from radial into femoral access in cardiac catheterization and to identify(More)