Báo cáo khoa học: "Zonation altitudinale des structures forestières de végétation en Californie méditerranéenne Leur interprétation en fonction des méthodes utilisées sur le pourtour méditerranéen" pot

... forment à peu près par-Article de synthèseZonation altitudinale des structures forestières de végétation en Californie méditerranéenne Leur interprétation en fonction des méthodes ... inégalement, en froid (Harvay, 1980; Quezel et Schevock,1982); elles occupent essentiellement lesfaçades occidentales et méridionales des chaînes (cismontanous); elles pénètrentlargement ... apparaissentaux niveaux suivants :- les chênes sclérophylles caractérisentessentiellement le méso-méditerran en et le méso-californien subhumide et s’éten-dent, au moins localement,...

Báo cáo khoa học: " Zonation biogéographique des Alpes dauphinoises à partir de l’étude comparative des sapinières à Abies alba et des pessières à Picea abies" pps

... restent à élucider. C’est le cas des hêtraies, qui à 10 km de leur limiteorientale constituent, dans le bas Vénéonet dans le Valgaudemar sur des adretsacides, des ... dufonctionnement des écosystèmes de mon-tagne.MÉTHODESRecueil des données sur le terrainDeux cent soixante-quatorze relevés réunissantplus de 300 espèces constituent le ... constituent unecellule charnière, une plaque tournante quiaccueille des peuplements aussi bien d’ori-gine occidentale que d’origine orientalemais souvent appauvris en leurs...

Tài liệu Báo cáo khoa học: "Kernels on Linguistic Structures for Answer Extraction" doc

... Q/A ClassificationThe design of an answer extractor basically dependson the design of a classifier that decides if an an-swer correctly responds to the target question. Wedesign a classifier based ... exam-ples; indeed, while it is useful to establish an initialranking by measuring the similarity between ques-tion and answer, BOW is almost irrelevant to grasptypical rules that suggest if a description ... Moschitti. 2006. Efficient convolution kernelsfor dependency and constituent syntactic trees. InECML’06.S. Quarteroni and S. Manandhar. 2008. Designing aninteractive open domain question answering...

Tài liệu Báo cáo khoa học: "Constraints over Lambda-Structures in Semantic Under specification" pptx

... binder; (3) variables are dominated by their binders; (4) only anaphors (nodel labelled ana) are linked to antecendents; (2) ev- ery anaphor has exactly one antecendent; (5) antecedents ... represent anaphoric dependencies in A -structures by another explicit relation between nodes, the linking relation. An anaphor (i.e. a node labelled as ana) may be linked to an antecedent ... parallel elements are the two subject NPs. (11) and (13) together give us a 'Hirschbiihler sentence' (Hirschbiihler, 1982), and our treat- ment in this case is descriptively equivalent...

Tài liệu Báo cáo khoa học: "HORN EXTENDED FEATURE STRUCTURES: FAST UNIFICATION WITH NEGATION AND LIMITED DISJUNCTION" ppt

... occurring as an antecedent in some clause, the nodes at the ends of tl,ese paths in the working extended feature structure are endowed with a common tag. When- ever nodes are coalesced, a check ... of feature structures and N is the least element of/C under the ordering _. (Titus, by definition, K: has a least element, and K: determines N.) Think of N a.s the "current" feature ... inferences are made, edges and nodes become actual (depicted by deleting underscores), and actual nodes with common labels are ultimately coalesced. The final extended feature graph is shown in...

Báo cáo khoa học: "Using Predicate-Argument Structures for Information Extraction" ppt

... Starting with MUC6 namedentity data was available.Document(s)POSTaggerNPBIdentifierDependencyParserNamed Entity RecognizerEntityCoreferenceDocument(s)Named EntityRecognizerPhrasalParser ... 83.05Table 1: Inductive learning results for argumentidentiﬁcation and role assignmentModel Implementation Arg Role AStatistical (Gildea and Palmer) - 82.8This study 71.86 78.87Decision ... factmissed the AGENT-OF-DEATH in this sentence. Be-cause several templettes might describe the sameevent, event coreference is processed and, based onthe results, templettes are merged when necessary.The...

Báo cáo khoa học: Cadmium – glutathione solution structures provide new insights into heavy metal detoxiﬁcation potx

... Institut de Biologieet de Technologies de Saclay, CEA-Saclay, Gif -sur- Yvette Cedex, France4 Service de Chimie Bioorganique et de Marquage ⁄ Institut de Biologie et de Technologies de Saclay, ... yeastCorrespondenceY. Boulard, CEA – Direction des Sciencesdu Vivant, Institut de Biologie et de Technologies de Saclay, Service de BiologieInte´grative et Ge´ne´tique Mole´culaire,Baˆt.144, ... were collected at 500 MHzat 274.3K with TXI or BBI probes.1H,15N-heteronuclear single quantum coherence experi-ments were carried out using gradient coherence selectionand sensitivity enhancement....

Báo cáo khoa học: "Packing of Feature Structures for Efficient Unification of Disjunctive Feature Structures" pptx

... disjunctive nodes, which are denoted by Ai. For example, 53 has two disjunctive nodes, A 5 and A6. A de- pendency function, denoted by Di, is a mapping from a disjunctive node to a segment, and ... expressed by non- determinism when applying the dependency functions. When we unify a feature structure segment for A2, we unify $2 if we are applying Dz, or 53 if D2. apply a dependency function ... of the segment unification. The data structure of dependency functions has to be improved, and dependency functions can be packed. I observed that at least a quarter of the segment unification...

Báo cáo khoa học: " LOCAL AND GLOBAL STRUCTURES IN DISCOURSE UNDERSTANDING" docx

... presented. So the understanding processes modelled by these systems are prevailingly knowledge-driven and, secondly, reflect relatively high level, global macro-operatlons upon events described ... Bower 1980, Wilensky 1981). Various types of content units and structures needed to account for knowledge processing have been proposed in the general context of modeling discourse understanding ... Berkeley, 1980. Wilensky R., Hera-planning: representing and using knowledge about planning in problem solving and language understanding. Cognitive Science, 1981, vol. 5 No. 3. IV REFERENCES...

Báo cáo khoa học: High-resolution crystal structures of the ﬂavoprotein NrdI in oxidized and reduced states – an unusual ﬂavodoxin pot

... Inﬂuence of the protein environmenton the redox potentials of ﬂavodoxins from Clostridiumbeijerinckii. J Biol Chem 282, 25240–25246.37 Ishikita H (2008) Redox potential difference betweenDesulfovibrio ... M,Hooft RW & Vriend G (1996) PRODRG, a programfor generating molecular topologies and unique molecu-lar descriptors from coordinates of small molecules.J Comput Aided Mol Des 10, 255–262.52 ... following supplementary material is available:Fig. S1. Multiple sequence alignment of 199 NrdIsequences extracted from the RNRdb.Fig. S2. Electron density revealing a possible metal ionin...

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