George Panagopoulos

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BACKGROUND Hypertension leads to many degenerative diseases, the most common being cardiovascular in origin. This study has been designed to estimate the prevalence of self-reported hypertension in a random nationwide sample of adult Greek population, while focus was set to the assessment of participants' nutritional habits in relation to their hypertension(More)
This paper presents the first distributed triangle listing algorithm with provable CPU, I/O, Memory, and Network bounds. Finding all triangles (3-cliques) in a graph has numerous applications for density and connectivity metrics, but the majority of existing algorithms for massive graphs are sequential, while distributed versions of algorithms do not(More)
The strong causal role of hypercholesterolaemia on the progression of atherosclerosis and subsequently on the development of cardiovascular disease is well described. Main aim of this study was to evaluate the prevalence of self-reported hypercholesterolaemia and its relation to nutritional habits, in a representative nationwide sample of adult Greek(More)
Vascular injury in orthopedic trauma is challenging. The risk to life and limb can be high, and clinical signs initially can be subtle. Recognition and management should be a critical skill for every orthopedic surgeon. There are 5 types of vascular injury: intimal injury (flaps, disruptions, or subintimal/intramural hematomas), complete wall defects with(More)
Free text retrieval is an important problem which can signii-cantly beneet from a parallel architecture. Signature methods have been proposed to answer text retrieval queries in parallel machines Sta88, LF92], under the assumption that the main memory is suucient to hold the entire signature le. We propose the use of a Parallel Bit-Sliced Signature File(More)
INTRODUCTION There are limited information and inconclusive results for dual head screw intramedullary hip nails for trochanteric fractures. Therefore, we performed a prospective study to evaluate the healing of fractures, and survival, function, and complications of patients operated with this implant. METHODS We prospectively studied 79 patients (61(More)
Within the field of Computational Creativity, significant effort has been devoted towards identifying variegating aspects of the creative process and constructing appropriate metrics for determining the degree that an artefact exhibits creativity with respect to these aspects. However, the formalization of a person’s creativity (i.e. a creativity user(More)
Free text retrieval is an important problem which can signii-cantly beneet from a parallel architecture. Signature methods have been proposed to answer text retrieval queries in parallel machines Sta88, LF92], under the assumption that the main memory is suucient to hold the entire signature le. We propose the use of a Parallel Bit-Sliced Signature File(More)