Comparing Clustering Algorithms for the Identification of Similar Pages in Web Applications

In this paper, we analyze some widely employed clustering algorithms to identify duplicated or cloned pages in web applications. Indeed, we consider an agglomerative hierarchical clustering algorithm, a divisive clustering algorithm, k-means partitional clustering algorithm, and a partitional competitive clustering algorithm, namely Winner Takes All (WTA). All the clustering algorithms take as input a matrix of the distances between the structures of the web pages. The distance of two pages is computed applying the Levenshtein edit distance to the strings that encode the sequences of HTML tags of the web pages

Glycerol and arabitol production by an intergeneric hybrid, PB2, obtained by protoplast fusion between Saccharomyces cerevisiae and Torulaspora delbrueckii

An intergeneric osmotolerant hybrid yeast, PB2, was used together with the parental strains to study glycerol and arabitol production in batch culture. This fusion product was previously obtained by protoplast fusion between Torulaspora delbrueckii and Saccharomyces cerevisiae. Polyols and biomass production were determined in batch culture under aerobic conditions. Under the conditions tested, using PB2 hybrid and both parental strains, the best results were obtained with the hybrid. Arabitol reached a final concentration of 70 g/l and glycerol was increased to up to 50 g/l.Fil: Lucca, Maria Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Spencer, John F. T.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Castellanos, Lucia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentin

Evaluation of autonomies in the severely brain injured: the Progression of Autonomies Scale

The aim of this study was to validate the Progression of Autonomies Scale (PAS) for the evaluation of autonomies in severe acquired brain injury patients. The PAS design is based on a model of progressive recovery of autonomies and is organized in three domains (Personal, Domestic and Extra-domestic). Scores assigned range from zero to three. The PAS items gather information about the patient’s perception and awareness of his/her disability(ies) on admission and perception of his/her improvement at the end of a rehabilitation process. The PAS was administered to 127 inpatients on admission to and at discharge from a rehabilitation program. All 127 inpatients, recruited in a prospective multicenter study, completed the rehabilitation program. The statistical analysis identified a total of 38 items to be retained in the PAS, out of an initial 82 items. The results provide evidence of the validity and reliability of the PAS in its final version

Antinuclear antibody positivity in patients with chronic hepatitis C: clinically relevant or an epiphenomenon?

Background Serum autoantibodies such as antinuclear antibody (ANA) are frequently detected in patients with chronic hepatitis C virus (HCV) infection, but its relevance is a matter of discussion.Aim To assess the association of ANA positivity with clinical and histological features, and with the outcome of antiviral therapy in patients with HCV infection.Methods Baseline samples from patients with hepatitis C treated with interferon and ribavirin were tested for ANA positivity by indirect immunofluorescence.Results the mean age was 48.3 +/- 11.1 years and 56% were men. Among 234 included patients, 22 patients (9.4%) were positive for ANA. These patients showed significantly higher median alanine aminotransferase level (3.52 vs. 2.39 x upper limit of normal, P=0.009) when compared with ANA-negative patients. Fibrosis stage and necroinflammatory grading were not influenced by ANA positivity. Sustained virological response (SVR) rates were similar between ANA-positive and ANA-negative patients (27 vs. 29%, P=0.882). Alanine aminotransferase flares (>= 1.5-fold the baseline) during treatment were observed in 28 patients (12%), irrespective of the presence of ANA and without any clinical significance.Conclusion Among HCV patients, ANA positivity seems to represent an immunological epiphenomenon. It neither influences clinical, biochemical, and histological features of chronic hepatitis C nor predicts response to antiviral treatment. Eur J Gastroenterol Hepatol 21:350-356 (C) 2009 Wolters Kluwer Health / Lippincott Williams & Wilkins.Universidade Federal de São Paulo, Hepatitis Sect, Div Gastroenterol, São Paulo, BrazilUniversidade Federal de São Paulo, Hepatitis Sect, Div Gastroenterol, São Paulo, BrazilWeb of Scienc

Antinuclear antibody (ANA) positivity in patients with chronic hepatitis C: clinically relevant or merely an epiphenomenon?

Universidade Federal de São Paulo, São Paulo, BrazilUniversidade Federal de São Paulo, EPM, São Paulo, BrazilWeb of Scienc