30,017 research outputs found

    Overview of the Author Profiling Task at PAN 2013

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    [EN] This overview presents the framework and results for the Author Profiling task at PAN 2013. We describe in detail the corpus and its characteristics, and the evaluation framework we used to measure the participants performance to solve the problem of identifying age and gender from anonymous texts. Finally, the approaches of the 21 participants and their results are described.The author profiling task @PAN-2013 was an activity of the WIQ-EI IRSES project (Grant No. 269180) within the FP 7 Marie Curie People Framework of the European Commission. We want to thank the Forensic Lab of the Universitat Pompeu Fabra Barcelona for sponsoring the award for the winner team. The work of the first author was partially funded by Autoritas Consulting SA and by Ministerio de Economía y Competitividad de España under grant ECOPORTUNITY IPT-2012-1220-430000. The work of the second author was in the framework the DIANA-APPLICATIONS-Finding Hidden Knowledge in Texts: Applications (TIN2012-38603-C02-01) project, and the VLC/CAMPUS Microcluster on Multimodal Interaction in Intelligent Systems. The work of fifth author was funded in part by the Swiss National Science Foundation (SNF) project "Mining Conversational Content for Topic Modelling and Author Identification (ChatMiner)" under grant number 200021_130208.Rangel, F.; Rosso, P.; Koppel, M.; Stamatatos, E.; Inches, G. (2013). Overview of the Author Profiling Task at PAN 2013. CLEF Conference on Multilingual and Multimodal Information Access Evaluation. 352-365. https://riunet.upv.es/handle/10251/46636S35236

    Stiffness and progressive damage analysis on random chopped fiber composite using FEM

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    The need of vehicle weight reduction and fuel efficiency in the automotive industry calls for substituting traditional materials with lightweight ones. With the maturity of the preforming technologies, random chopped fiber composites have received increasing attention in recent years as replacement for traditional structural materials. In order to expand their application, accurate material characterization is required. Material properties such as effective elastic stiffness, material damage behavior, and strength are of primary interest. In this thesis, a micro-mechanics based finite element analysis method for the random chopped fiber composite is developed. In order to obtain the effective material properties of random chopped fiber composites, a modified random sequential adsorption technique is proposed to generate the representative volume element of random chopped fiber composites. In the three-dimensional representative volume element generation algorithm, a fiber is bended locally to avoid intersecting other fibers and consequently to overcome the "jamming limit" in the existing techniques. The volume fraction of a representative volume element generated by the modified random sequential adsorption is as high as that of the specimens provided by industry, which is about 35% to 40%. A homogenization scheme is applied to the finite element solution of the boundary value problem, defined in the representative volume element with proper boundary conditions, to compute the effective elastic stiffness constants of the composite. An automatic procedure based on a moving window technique is also presented to determine the proper size of the representative volume element of the random chopped fiber composite. Investigation on the damage behavior of the composite is carried out by using constituent's mechanical properties. Three damage mechanisms are considered, namely, the matrix cracking, interfacial debonding, and fiber breakage. The cohesive zone model is adopted to represent interfacial debonding. The effect of matrix cracking is accounted for by a modified von Mises yield criterion and subsequently a gradual material degradation model. Fiber breakage is modeled by a stress-based failure criterion and a sudden material degradation model. Effects of interfacial strength, critical energy release rate, and residual thermal stress on the overall performance of the composite are investigated. The results of the finite element analysis are validated by experimental data.Ph.D.Includes bibliographical referencesIncludes vitaby Yi Pa

    Pan tu: Jiang Qing : wen yi qi shou

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    市二宫文化室绘.文字:叛徒 - 江青 文艺旗手; 下款:市二宫文化室绘 1976.11.裝裱後高寬: 119 x 49 cm.Shi er gong wen hua shi hui.Wen zi : pan tu - Jiang Qing wen yi qi shou; Xia kuan : shi er gong wen hua shi hui 1976.11.Zhuang biao hou gao kuan : 119 x 49 cm

    Oreocharis tubiflora Pan 1987

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    Oreocharis tubiflora Pan (1987: 287). Distribution:— China (Fujian). Notes:—Referred to Oreocharis sect. Oreocharis by Pan (1987), Wang et al. (1990) and Li & Wang (2004).Published as part of Möller, Michael, Middleton, David, Nishii, Kanae, Wei, Yi-Gang, Sontag, Susanne & Weber, Anton, 2011, A new delineation for Oreocharis incorporating an additional ten genera of Chinese Gesneriaceae, pp. 1-36 in Phytotaxa 23 on page 27, DOI: 10.11646/phytotaxa.23.1.1, http://zenodo.org/record/489401
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