Báo cáo khoa học: "FLECTIONS ON TWENTY YEARS OF THE ACL" doc

... entered the field of computational linguistics in 1967 and one of my earliest recollections is of studying the Harvard Syntactic Analyzer. To this date, this parser is one of the best documented ... P~FLECTIONS ON TWENTY YEARS OF THE ACL Jonathan Allen Research Laboratory of Electronics and Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology ... focused on discovering a use for all these different parsings and I can recall that one such application was the parsing of the Geneva Nuclear Convention. By displaying the large number of possible...

Báo cáo khoa học: "REFLECTIONS ON 20 YEARS OF THE ACL AN INTRODUCTION" pptx

... tenure of that office, in particular as they reflect on the state of computational linguistics then and now, and perhaps with some suggestions for what the future will bring." The written ... our name to the Association for Computational Linguistics in 1968, but that did not affect the continuity of the organization. The date of this panel, 17 June, misses the real anniversary by ... Information Science twice, and the Cognitive Science Society once. The convocation of the first International Conference on Computational Linguistics, now known popularly as COLING, replaced...

Báo cáo khoa học: "A General Computational Treatment Of The Comparative" doc

... coordinate conjunction by containing a conjunction metarule mechanism which automat- ically adds a production containing conjunction to certain context-free definitions. 3 The Syntactic ... in the BNF component of the grammar. Instead, the constraint component deals with this problem by means of special constraints that assign and pass up the comparativ e marker; other constraints ... venient form for computation. In our ver- sion, the underlying structure contains a main clause where the comparison is the primary relation; each quantity in the relation contains an embedded...

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

... VectorMachines along with kernel functions can ef-fectively represent syntax and semantics. Ourexperiments on question/answer classificationshow that the above models highly improve on bag -of- words on a ... the data structures on which we applied the above kernels.2.1 Syntactic Structures The POSSK is obtained by applying the String Ker-nel on the sequence of POS-tags of a question ora answer. For ... representation is the idea that when we ignore the answer to a def-inition question we check whether such answer isformulated as a “typical” definition and whether an-swers defining similar concepts...

Báo cáo khoa học: Spectroscopic and kinetic properties of the horseradish peroxidase mutant T171S Evidence for selective effects on the reduced state of the enzyme potx

... dependent on the strength of the Fe-Hisbond and hence on the status of the proximal HisH-bond. It appears that one can readily rationalize the general trends but not the magnitude of the chan-ges ... comparison of the electronic absorptionand RR spectra of the wild type and Thr171Ser eitherin the presence of the aromatic donor BHA or atalkaline pH. Addition of saturating amounts of BHAdid ... resulting from the tauto-merism of the imidazole Ndproton with respect to the donor and acceptor atoms of the proximal His andAsp H-bond [11]. The only exception to this is the cat-ionic ascorbate...

Tài liệu Báo cáo khoa học: Structural and functional studies of the human phosphoribosyltransferase domain containing protein 1 docx

... confor-mation change, then allowing the purine base to bind inaccordance with the mechanism of human HPRT[19,25]. This conclusion can be made based on the lack of thermal shifts when only the ... on ionic strength [20].In the present study, we report the structural andfunctional characterization of the human HPRThomolog PRTFDC1. To shed light on the potentialfunction of PRTFDC1, the ... crystallization solutions. The ligandbound was interpreted as GMP because the N2 of the base makes a hydrogen bond to a main chain car-bonyl. Binding of a xanthine base from XMP in the same position,...

Tài liệu Báo cáo khoa học: Identiﬁcation and characterization of the transcription factors involved in T-cell development, t-bet, stat6 and foxp3, within the zebraﬁsh, Danio rerio docx

... at the 3¢ end of the gene, where the zebraﬁsh and human sequences appearto be quite diverse. Together with the well-conservedgene organization, there is a conservation of syntenybetween the ... domainsimportant in the functioning of these transcriptionfactors. T-bet (also known as Tbox-21) belongs to the T-box family of genes, consisting of over 20 memberscharacterized in mammals [35]. They contain ... preliminary expres-sion data suggest that these genes are involved in the ﬁsh immune response, and that there is a relationshipbetween the expression of these transcription factorsand the cytokine...

Tài liệu Báo cáo khoa học: Post-translational modiﬁcation of the deubiquitinating enzyme otubain 1 modulates active RhoA levels and susceptibility to Yersinia invasion pptx

... sug-gested that the 37 kDa form of OTUB1 may containmultiple phosphorylation sites, based on the observeddifferential migration pattern (Fig. 3E). To furthershed light on the role of these OTUB1 ... 5B) or the S16A andY26F control mutants (data not shown), thereby con-ﬁrming that modiﬁcation of OTUB1 has an impact on the magnitude of Yersinia invasion. Because no effect on invasion was ... mimicking the guanidine nucleotide dissociation inhibitors of the host[16,18]. Full virulence of Yersinia depends on all of these properties mediated by YpkA, because mutationsor deletions in either...

Tài liệu Báo cáo khoa học: Post-translational modiﬁcations of the linker histone variants and their association with cell mechanisms docx

... function of the linkerhistone variantsLocation and structure of the linker histonesHistorically, the location of the globular domain of the linker histone has been a matter of contention [13].Currently, ... number of these modiﬁcations is low, the density of modiﬁcations is much the same as in the rest of the lin-ker histones. It is the shortness of the N-terminal tailsTable 1. Alignment of chicken, ... discussedlater.Analysis of other PTMsIt is now accepted that acetylation and methylation of the core histones are key regulators of transcription.Although phosphorylation of the linker histones hasattracted the...

Tài liệu Báo cáo khoa học: SREBPs: physiology and pathophysiology of the SREBP family ppt

... understerol regulation. Under conditions of overnutrition,SREBP-1c expression is elevated, and consequently, the levels of nuclear SREBP-1c protein and lipogenesisare enhanced in the liver and adipose ... target of SREBP [20]. The role of SREBP-1a in the regulation of cell growth and the cell cycle might be biphasic andcomplex, and needs to be further investigated.SREBP is evolutionarily conserved; ... resistance [48]. The exact roles of SREBP-1c ⁄ADD1 are not yet fully deﬁned.SREBP and parasympathetic functionin heartParasympathetic stimulation of the heart involvesactivation of GIRK1 ⁄ 4,...

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