FIDJI: using syntax for validating answers in multiple documents     

Véronique Moriceau  Xavier Tannier 《Information Retrieval》2010,13(5):507-533

This article presents FIDJI, a question-answering (QA) system for French. FIDJI combines syntactic information with traditional QA techniques such as named entity recognition and term weighting; it does not require any pre-processing other than classical search engine indexing. Among other uses of syntax, we experiment in this system the validation of answers through different documents, as well as specific techniques for answering different types of questions (e.g., yes/no or list questions). We present several experiments which show the benefits of syntactic analysis, as well as multi-document validation. Different types of questions and corpora are tested, and specificities are commented. Links with result aggregation are also discussed.  相似文献   

Gradual refinement for application-specific MPSoC design from Simulink model to RTL implementation   总被引：1，自引：0，他引：1  

Kai Huang  Xiao-lang Yan  Sang-il Han  Soo-ik Chae  Ahmed A. Jerraya  Katalin Popovici  Xavier Guerin  Lisane Brisolara  Luigi Carro 《浙江大学学报(A卷英文版)》2009,10(2):151-164

The application-specific multiprocessor system-on-chip （MPSoC） architecture is becoming an attractive solution to deal with increasingly complex embedded applications, which require both high performance and flexible programmability. As an effective method for MPSoC development, we present a gradual refinement flow starting from a high-level Simulink model to a synthesizable and executable hardware and software specification. The proposed methodology consists of five different abstract levels： Simulink combined algorithm and architecture model （CAAM）, virtual architecture （VA）, transactional accurate architecture （TA）, virtual prototype （VP） and field-programmable gate array （FPGA） emulation. Experimental results of Motion-JPEG and H.264 show that the proposed gradual refinement flow can generate various MPSoC architectures from an original Simulink model, allowing processor, communication and tasks design space exploration.  相似文献   

Oxidative stress in elite athletes training at moderate altitude and at sea level     

Josefa León-López  Carmen Calderón-Soto  Matías Pérez-Sánchez  Belén Feriche  Xavier Iglesias  Diego Chaverri 《European Journal of Sport Science》2018,18(6):832-841

Using a controlled parallel group longitudinal trial design, we investigated the effects of different training interventions on the prooxidant/antioxidant status of elite athletes: living and training at moderate altitude for 3 (Hi-Hi3) and 4 weeks (Hi-Hi), and for 4 weeks too, living high and training high and low (Hi-HiLo) and living and training at sea level (Lo-Lo). From 61 swimmers, 54 completed the study. Nitrites, carbonyls, and lipid peroxidation (LPO) levels were assessed in plasma. Enzymatic antioxidants glutathione peroxidase (GPx) and glutathione reductase (GRd), and non-enzymatic antioxidants total glutathione (GST), reduced glutathione (GSH) and oxidized glutathione (GSSG) were analysed in the erythrocyte fraction. At the end of the intervention, nitrites levels were similar in all altitude groups but higher than in the Lo-Lo controls (P?=?.02). Hi-HiLo had greater GPx activity than Hi-Hi and Hi-Hi3 during most of the intervention (P?≤?.001). GRd activity was higher in Lo-Lo than in Hi-Hi at the end of the training camp (P?≤?.001). All groups showed increased levels of LPO, except Lo-Lo, and carbonyls at the end of the study (P?≤?.001). Training at altitude for 3 or 4 weeks drives oxidative stress leading to cellular damage mainly by worsening the antioxidant capacities. The GSSG/GSH ratio appears to be related to perceived exertion and fatigue. The stronger antioxidant defence showed by the Hi-HiLo group suggests an inverse relationship between redox alterations and performance. Further studies are required to investigate the role of oxidative stress in acclimatization, performance, and health.  相似文献   

Videomuseum and vasari magnets: Museums and art galleries new technologies study     

Xavier Perrot 《Archives and Museum Informatics》1996,10(1):41-46

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Mirror,mirror on the wall,tell me I'm right!          下载免费PDF全文

Alain Michel  Xavier Pons 《European Journal of Education》2017,52(2):119-123

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Making Poor Choices? Demand Rationalities and School Choice in a Chilean Local Education Market     

Xavier Bonal  Antoni Verger  Adrián Zancajo 《Journal of School Choice》2017,11(2):258-281

Although the literature on school choice rationalities is extensive, different authors interpret the processes of school choice for poor families in different ways. Positions vary between those that consider that poor families have the same capacity to choose as middle class families and those that value structural factors as constraints for choice. The objective of this article is to identify different school choice rationalities of low income families in the context of a highly marketized education system such as Chile. Beyond the restrictions of a different nature that poor families face, this social group mostly expresses high levels of reflexivity and complex sets of preferences when it comes to choosing schools for their children. This article tries to overcome the dualistic division that prevails in school choice literature between choice as an outcome of utility maximization for all, and choice as a denial for deprived groups.  相似文献   

The Origins of Football in Spain: From the First Press Appearance to the Constitution of the First Clubs (1868–1903)     

Xavier Torrebadella-Flix  Javier Olivera-Betrán 《国际体育史杂志》2017,34(7-8):471-497

This research focuses on the origins of football in Spain and seeks to show how and where it was introduced in the country, to comprehend the historical context, and to understand why it took roots so rapidly despite the rivalry with the well-established tradition of bullfighting. The period of study spans from 1868 (first news piece on football in Spain) to 1903 (celebration of the first football championship in the country). The methodology focused primarily on identifying the primary sources and selecting the secondary sources, followed by the interpretative analysis and the mapping of football associations created in Spain in the sport’s early days. The large urban cities led the process of creating football clubs from 1889: Barcelona (61), Madrid (15), and Bilbao (9) steered the process of legitimization and institutionalization of football in the country. In the last 11 years of the nineteenth century (1889–1899), 29 clubs were created in 12 different cities. In the first four years of the twentieth century (1900–1903), a further 103 clubs mushroomed all over the country. Thus a total of 132 clubs were founded between 1889 and 1903 in Spain, which laid the necessary foundations for the implantation and legitimization of football.  相似文献   

Fans,bloggers, and gamers: Exploring participatory culture     

Jean-Baptiste Harguindéguy  Xavier Coller 《Cultural Trends》2015,24(1):104-106

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The influence of wearing ski-boots with different rigidity characteristics on postural control     

Frédéric Noé  Xavier García-Massó  Pauline Delaygue  Audrey Melon  Thierry Paillard 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(2):157-167

Abstract

External supports that reduce ankle joint mobility such as ski-boots can impair postural control of healthy participants. Although this disruptive effect has been attributed to the rigidity of the external supports, the results remained controversial and no study has been conducted in order to evaluate the influence of ski-boots rigidity. Hence, the question about the influence of ankle support rigidity on postural control remains open. This study was therefore undertaken in order to investigate the effect of ski-boots rigidity on postural control. Ten healthy active participants were recruited. The wearing of soft and rigid ski-boots was compared to barefoot while standing on a seesaw generating mediolateral and anteroposterior instability. Centre of pressure displacements were sampled with a force platform. The surface electromyographic activity of the main muscles from the leg, thigh and trunk was recorded. A motion analysis system was also used to calculate the ankle, knee and hip angles. The results did not reveal any negative influence of ski-boot rigidity on postural control but rather suggest a less active postural control with the rigid ski-boots which offered a higher mechanical contribution.  相似文献   

Science academies’ refresher course on Experimental Biology: Orthodox to Modern     

D. J. Bagyaraj  T. Francis Xavier 《Resonance》2016,21(9):858-858

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