Frequent Graph Discovery : application to Line Drawing Document Images

In this paper a sequence of steps is applied to a graph representation of line drawings using concepts from data mining. This process finds frequent subgraphs and then association rules between these subgraphs. The distant aim is the automatic discovery of symbols and their relations, which are parts of the document model. The main outcome of our work is firstly an algorithm that finds frequent subgraphs in a single graph setting and secondly a modality to find rules and meta-rules between the discovered subgraphs. The searched structures are closed [1] and disjunct subgraphs. One aim of this study is to use the discovered symbols for classification and indexation of document images when a supervised approach is not at hand. The relations found between symbols can be used in segmentation of noisy and occluded document images. The results show that this approach is suitable for patterns, symbols or relation discovery

Frequent Graph Discovery: Application to Line Drawing Document Images

International audienceIn this paper a sequence of steps is applied to a graph representation of line drawings using concepts from data mining. This process finds frequent subgraphs and then association rules between these subgraphs. The distant aim is the automatic discovery of symbols and their relations, which are parts of the document model. The main outcome of our work is firstly an algorithm that finds frequent subgraphs in a single graph setting and secondly a modality to find rules and meta-rules between the discovered subgraphs. The searched structures are closed [1] and disjunct subgraphs. One aim of this study is to use the discovered symbols for classification and indexation of document images when a supervised approach is not at hand. The relations found between symbols can be used in segmentation of noisy and occluded document images. The results show that this approach is suitable for patterns, symbols or relation discovery

Synthèse bibliographique sur la situation de la biodiversité animale en contexte d'exploitation agricole de palmier à huile en Malaisie (Bornéo) et exploitation des premières données de quantification de la biodiversité animale

La biodiversité est sur le déclin depuis des décennies, profilant à l’avenir la « 6ème extinction de masse ». La culture du palmier à huile a conduit à la conversion accélérée des forêts tropicales depuis les années 1910, ce qui en fait la plus grande menace directe à la biodiversité en Asie du Sud-Est. Dans ce travail nous avons répertorié les principales techniques de suivi, de quantification et d’échantillonnage de la biodiversité animale terrestre, et leurs critères de sélection selon les objectifs d’enquête et de gestion. La finalité de ce travail est la proposition d’un plan de monitoring de la biodiversité animale terrestre pour le projet TRAILS. Ce projet, mené par l’ONG HUTAN et le Cirad, vise la création de paysages agricoles innovants favorables au retour de la biodiversité dans les palmeraies en Malaisie. Afin d’en évaluer l’efficacité, nous proposons un plan en 3 temps : une évaluation de surface par la bioacoustique, qui statuera la richesse spécifique des parcelles ; une évaluation de la différence de biodiversité entre parcelles grâce à l’ADN environnemental ; et le camera-trapping afin de distinguer une recolonisation vraie d’une contamination de lisière

A Pilot Evaluation of Dialectical Behavioural Therapy in Adolescent Long-Term Inpatient Care

There is a paucity of research investigating psychosocial treatments for youth receiving long-term residential care.This study describes the implementation and impact of dialectical behavioural therapy (DBT) in a long-term psychiatric hospital located in the United States of America.Changes in overall functioning, number of psychotropic medications prescribed, non-suicidal self-injurious behaviour (NSIB), and locked seclusions were investigated in 106 consecutive unique adolescent patients who received DBT. In addition, a comparison group of historical controls was used to examine the effect of DBT in youth with the highest rates of NSIB.A statistically significant increase in overall functioning, as well as a decrease in number of psychotropic medications and non-suicidal self-injurious behaviour (NSIB) was observed within the DBT group. A decrease in locked seclusions was not observed. Accounting for the effects of age, gender, length of stay, and time, youth who received DBT were less likely to engage in NSIB relative to historical controls.These preliminary data suggest that DBT is beneficial for youth with NSIB in long term inpatient psychiatric care.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/79237/1/j.1475-3588.2010.00569.x.pd

On the Measurement of the Lense-Thirring effect Using the Nodes of the LAGEOS Satellites in reply to "On the reliability of the so-far performed tests for measuring the Lense-Thirring effect with the LAGEOS satellites" by L. Iorio

In this paper, we provide a detailed description of our recent analysis and determination of the frame-dragging effect obtained using the nodes of the satellites LAGEOS and LAGEOS 2, in reply to the paper "On the reliability of the so-far performed tests for measuring the Lense-Thirring effect with the LAGEOS satellites" by L. IorioComment: Added: the precise references to the the ArXiv papers of L. Iorio: gr-qc/0411024 v9 19 Apr 2005 and gr-qc/0411084 v5 19 Apr 2005, explicitly containing his proposal to use the mean anomal

Work life of persons with asthma, rhinitis, and COPD: A study using a national, population-based sample

OBJECTIVE: To estimate the duration of work life among persons reporting a physician's diagnosis of COPD, asthma, or rhinitis compared to those with select non-respiratory conditions or none and to delineate the factors associated with continuance of employment. METHODS: Persons ages 55 to 75 reporting a physician's diagnosis of COPD, asthma, or rhinitis as well as those without any of these conditions were identified by random-digit dialing (RDD) in the continental U.S and administered a structured survey. We used Kaplan-Meier life table analysis to estimate the duration of work life among persons with and without the three conditions and Cox proportional hazard regression to examine the role of demographic and work characteristics in the proportion leaving employment in each time interval. RESULTS: Persons with COPD, asthma, and rhinitis were no less likely than the remainder of the population to have ever worked, but those with COPD were less likely to be working when interviewed or as of age 65, whichever came first. As of age 55, only 62 percent of persons with COPD continued to work versus 72 and 78 percent of persons with asthma and rhinitis, respectively. Persons with COPD, asthma, and rhinitis all had an elevated risk of leaving work prior to age 65 relative to those without chronic conditions, with and without adjustment for demographic and work characteristics. CONCLUSION: COPD and to a lesser extent asthma and rhinitis were associated with a substantially shortened work life, an effect not due to demographic and work characteristics

Glucocorticoid Regulation of Elastin Synthesis in Human Fibroblasts: Down-Regulation in Fibroblasts from Normal Dermis But Not From Keloids

Keloids arise as benign connective tissue masses at sites of injury in genetically predisposed individuals, In addition to excessive collagen accumulation, there is biochemical and histologic evidence of elastic tissue. Previous studies showed that glucocorticoid regulation of collagen synthesis differs in fibroblasts from normal adult dermis and keloids, To define further the abnormal regulation of matrix synthesis in keloid fibroblasts, we examined glucocorticoid regulation of elastin synthesis. The basal level of elastin synthesis was significantly higher in keloid than in normal cells, and hydrocortisone reduced synthesis of elastin and elastin mRNA in normal but not in keloid fibroblasts. We had shown previously that fibroblasts from fetal dermis resembled keloid fibroblasts in glucocorticoid regulation of growth and collagen synthesis. In this study, glucocorticoids failed to down-regulate elastin synthesis in fetal cells that had not differentiated to produce normal levels of elastin, whereas fetal cells with normal elastin production exhibited glucocorticoid down-regulation. Abnormal regulation in keloid cells was independent of cell density and was confined to fibroblasts cultured from the keloid nodule. These findings reinforce the conclusion that a matrix-regulatory pathway is deranged in these focal lesions. Coordinate down-regulation of collagen and elastin by hydrocortisone in normal adult denial fibroblasts and the failure of hydrocortisone to down-regulate synthesis of either protein in keloid cells support the existence of common elements in the regulatory pathways of these two matrix proteins

Modifications of oxidized Zircaloy-4 surface in contact with radiolysed wet air

International audienceIn the framework of radioactive waste geological disposal, the long term evolution of the nuclear wastes packages and the release of the radionuclides from the wastes have to be studied. Regarding compacted wastes (cladding tubes) coming from reprocessing of spent fuel, the Zircaloy-4 (zirconium alloy) cladding tubes have been activated and oxidized in reactors. In the disposal, the radioactive waste is exposed to humid air in a first phase and to water after the resaturation phase. In order to better assess the degradation process of these nuclear waste package, the influence of wet air proton radiolysis on the behavior of surface oxidized Zircaloy-4 has been investigated. Radiolysis experiments were performed using an irradiation cell which is associated to an extracted beam. Samples are exposed to wet air, under and without radiolysis, during 12 and 24 h. The water partial pressure has been fixed at 6 and 50 mbar in order to have, respectively, localized adsorbed water molecules and a thin film of adsorbed water. Before and after each treatment, sample surfaces were characterized by X-ray Photoelectron Spectroscopy (XPS) in order to identify the elements at the topmost surface of the solid. The wet air radiolysis causes changes at the surface of oxidized Zircaloy-4 and influences the corrosion phenomenon. Indeed, an enrichment of tin and the presence of nitrogen species were observed. It could be due to the formation of tritin(II) tetrahydroxide dinitrate and a Zr4+ tetramer on the topmost oxide surface