Silvia A. Gómez

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Nowadays, organizations need to use OLAP (On Line Analytical Processing) tools together with geographical information. To support this, the notion of SOLAP (Spatial OLAP) arouse, aimed at exploring spatial data in the same way as OLAP operates over tables. SOLAP however, only accounts for discrete spatial data. More sophisticated GIS-based decision support(More)
BACKGROUND HPV testing in cervical cancer screening has been proposed as an alternative or complementary to cytology in women older than 30 years. However, adequate clinical sensitivity and specificity are crucial for a new test to be implemented. Hybrid Capture 2 (HC2) has proved good clinical performance in selecting women at risk for high-grade(More)
The web is changing the way in which data warehouses are designed, used, and queried. With the advent of initiatives such as Open Data and Open Government, organizations want to share their multidimensional data cubes and make them available to be queried online. The RDF data cube vocabulary (QB), the W3C standard to publish statistical data in RDF,(More)
Although raster data is the most popular discrete representation for continuous fields, other forms of space tessellation can be used, like Voronoi diagrams or Triangulated Irregular Networks (TIN). Besides, algebras for field manipulation have been proposed, but they are representation-dependent and not closed. To address this problems, we propose a(More)
INTRODUCTION AND OBJECTIVES Diabetics are at an increased risk of restenosis and adverse events after coronary stenting. Drug-eluting stents may, therefore, be useful in these patients. Our objective was to evaluate the use of sirolimus-eluting stents in diabetics with complex coronary lesions. PATIENTS AND METHOD Between May 2002 and August 2003, we(More)
We studied the difference in head-up tilt test responses between patients suffering from syncope who had hypertension and those who did not. A total of 338 consecutive patients with syncope underwent head-up tilt testing in our department from January 2003 to October 2004. Of these, 243 did not have hypertension (group A), whereas 95 did (group B). There(More)
podría ser debida a la insuficiencia nasal, rinorrea y/o mayor uso de pañuelos. Nasal fungal microbiota in allergic and healthy subjects Environmental fungi, moulds and yeasts could reach the nasal cavity with the inhaled air causing respiratory symptoms in atopic subjects, but little is known about the fungal flora of this site. In the present study(More)
BACKGROUND Non-invasive ventilation (NIV) is an effective form of treatment in patients with obesity hypoventilation syndrome (OHS) who have concomitant severe obstructive sleep apnoea (OSA). However, there is a paucity of evidence on the efficacy of NIV in patients with OHS without severe OSA. We performed a multicentre randomised clinical trial to(More)