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 synthèse Zonation 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 les façades occidentales et méridionales des chaînes (cism...

Ngày tải lên: 09/08/2014, 02:21

... restent à élucider. C’est le cas des hêtraies, qui à 10 km de leur limite orientale constituent, dans le bas Vénéon et dans le Valgaudemar sur des adrets acides, des ... du fonctionnement des écosystèmes de mon- tagne. MÉTHODES Recueil des données sur le terrain Deux cent soixante-quatorze relevés réunissant plus de 300 espèces const...

Ngày tải lên: 09/08/2014, 03:24

... Q/A Classification The design of an answer extractor basically depends on the design of a classifier that decides if an an- swer correctly responds to the target question. We design a classifier based ... exam- ples; indeed, while it is useful to establish an initial ranking by measuring the similarity between ques- tion and answer, BOW is almost irrelevant to grasp typical rules that suggest if...

Ngày tải lên: 20/02/2014, 09:20

... binder; (3) variables are dominated by their binders; (4) only anaphors (nodel la- belled 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 .....

Ngày tải lên: 20/02/2014, 18:20

... 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 ele- ment of/C under the ordering _. (Titus, by definition, K: has a least element, and K: determines N.) Think of N a.s the "current" fe...

Ngày tải lên: 22/02/2014, 10:20

... Starting with MUC6 named entity data was available. Document(s) POS Tagger NPB Identifier Dependency Parser Named Entity Recognizer Entity Coreference Document(s) Named Entity Recognizer Phrasal Parser ... 83.05 Table 1: Inductive learning results for argument identification and role assignment Model Implementation Arg Role A Statistical (Gildea and Palmer) - 82.8 This study 71.86 78.87 Decisi...

Ngày tải lên: 08/03/2014, 04:22

... Institut de Biologie et de Technologies de Saclay, CEA-Saclay, Gif -sur- Yvette Cedex, France 4 Service de Chimie Bioorganique et de Marquage ⁄ Institut de Biologie et de Technologies de Saclay, ... yeast Correspondence Y. Boulard, CEA – Direction des Sciences du Vivant, Institut de Biologie et de Technologies de Saclay, Service de Biologie Inte ´ grative et Ge ´ ne...

Ngày tải lên: 15/03/2014, 00:20

... 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 func- tions. When we unify a feature structure segment for A2, we unify $2 if we are applying Dz, or 53 if D2. apply a dependenc...

Ngày tải lên: 17/03/2014, 07:20

... 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 unders...

Ngày tải lên: 18/03/2014, 02:20

... Influence of the protein environment on the redox potentials of flavodoxins from Clostridium beijerinckii. J Biol Chem 282, 25240–25246. 37 Ishikita H (2008) Redox potential difference between Desulfovibrio ... M, Hooft RW & Vriend G (1996) PRODRG, a program for generating molecular topologies and unique molecu- lar descriptors from coordinates of small molecules. J Comput Aided Mol Des 1...

Ngày tải lên: 29/03/2014, 21:20