Panagiotis Theodoropoulos

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The time-varying microstructure of sleep EEG spindles may have clinical significance in dementia studies and can be quantified with a number of techniques. In this paper, real and simulated sleep spindles were regarded as AM/FM signals modeled by six parameters that define the instantaneous envelope (IE) and instantaneous frequency (IF) waveforms for a(More)
This paper focuses on transforming sequential perfectly nested loops into their equivalent parallel form. A special category of FOR nested loops is the uniform dependence loops (UDLs), which yield efficient parallelization techniques. An automatic code generation tool for shared and distributed memory machines, has been developed in order to automatically(More)
OBJECTIVES To review the current general concepts and understanding of the natural history of thoracic aortic aneurysm and their clinical implications. METHODS Data on the the normal thoracic aortas were derived from the database of the Multi-Ethnic Study of Atherosclerosis (n = 3573), representative of the general population. Data on diseased thoracic(More)
Aneurysms of the pulmonary artery are proven to be a very rare entity. Association with structural cardiac anomalies, structural vascular anomalies, pulmonary hypertension, vasculitis, and infection has been noted. Surgical intervention of symptomatic aneurysms is recommended. A more detailed study of the natural history of these aneurysms is needed. Here,(More)
— The steadily increasing complexity of new networks, combined with the versatility of newly introduced services, poses the need to incorporate new capabilities and intelligence into the network elements in order to meet the management needs of such services and network contexts. The capability of the network elements to identify problematic situations,(More)
BACKGROUND Thoracic aortic aneurysm is usually a clinically silent disease; timely detection is largely dependent upon identification of clinical markers of thoracic aortic disease (TAD); (bicuspid aortic valve, intracranial aortic aneurysm, bovine aortic arch, or positive family history). Recently, an association of simple renal cysts (SRC) with abdominal(More)
The capability of a network to identify problematic situations, named self-diagnosis, enables it to react promptly and autonomously once an event or error has been identified. The use of service information in this process enables it to identify more composite problems and to act more targeted in order to solve complex errors. This paper proposes a novel(More)
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