Báo cáo khoa học: "The "Spectrum" of Weak Generative Powers of Grammars" ppt

... "Spectrum" of Weak Generative Powers of Grammars by Wayne A. Lea, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge A summary is presented of some results ... on the basis of what has been called their weak generative powers. ” The relationships will be displayed on a “spectrum” of weak generative powers of gram...

Ngày tải lên: 07/03/2014, 18:20

... Faculty of Science, University of Tromsø, Tromsø, Norway 2 Department of Molecular Biotechnology, Faculty of Medicine, University of Tromsø, Tromsø, Norway 3 Department of Chemistry, Faculty of Science, ... fold of the main chains. None of these includes any of the binding sites, but some are located in the vicinity. Three of the regions with different conformation invol...

Ngày tải lên: 19/02/2014, 07:20

... regulators of responses to hypoxia [16] and embryological development of the central nervous system [17]. Many PAS domains bind cofactors or ligands, which are required for the detection of sensory ... structure of the N-terminal PAS domain of human PAS kinase [1] have also been determined. Recently, two further structures of PAS-like domains have been solved; the periplasmic liga...

Ngày tải lên: 19/02/2014, 12:20

... activity of Tma-CD was not significantly changed in the presence of a 10–1000 molar excess of Tma-ND, indicating that the Mg 2+ -dependent activity of Tma-CD is not restored in the presence of Tma-ND. ... affinity of Tma-W22A to the R29 ⁄ D29 substrate was analyzed in the absence of the metal cofactor using surface plas- mon resonance and compared with that of Tma-RNase HI. The...

Ngày tải lên: 06/03/2014, 22:21

... volume of 200 lL, 0.5 nmol of [1- 14 C]IPP (2 GBqÆmmol )1 ), 0.5 nmol of an allylic primer (GPP, FPP or GGPP), 1 lmol of MgCl 2 ,2lmol of a Tris– HCl buffer (pH 8.0) and a suitable amount of each ... product determination mecha- nism of type II GGPS. (A) The direction of the geranylgeranyl chain of GGPP bound in a subunit (blue) of S. alba GGPS. The x-end of the chain to...

Ngày tải lên: 07/03/2014, 06:20

... terms. y Entropy: the entropy of the word to word translation probability of the English word i e . y Part -of- Speech mapping template: whether the POS tags of the two words are in the “highly ... ) ji fe. y Rank: the rank of the word to word probabil- ity of j f in as a translation of i e among all the foreign words in the current tree. The above heuristics are a set...

Ngày tải lên: 20/02/2014, 15:20

... grammar consists of a set of universal principles, a set of language-particular principles, a set of lexical entries (the lexicon), and a set of phrase-structure rules. The grammar of English contains ... on the order of subterms in the grammar. If, e.g., the value of the agreement feature person in the definition of the type Verb leads to failure more often than th...

Ngày tải lên: 08/03/2014, 07:20

... remit of the local ethics committee. Prior to introduction of CPOE, local standards of prescribing existed specifying the tenets of good practice, including the avoid- ance of the use of abbreviations. An ... administered as Table 1 Types of medication errors before and after implementing CPOE Error type HWP (no. of errors and % of total errors) a CPOE (no. of errors and %...

Ngày tải lên: 25/10/2012, 10:39

... performance of a bronchoalveolar lavage for culture, or start of or a change in antimicrobial therapy in case of unex- pected infiltrates on the CXR; repositioning of tubes in case of malposition of orotracheal ... ultrasound of the thorax in case of pleural effusion on the CXR, start or change in medication (diuretics); insertion of a pleural drain; and repositioning of d...

Ngày tải lên: 25/10/2012, 10:39

... enzymes retained > 70% of their initial activity in the presence of 10 mm Ca 2+ and < 30% of their activity without Ca 2+ (Fig. 3C,D). PhyH at 35 °C showed a spectrum (Fig. 4) with a weak minimum around ... analysis of purified PhyH, PhyH-DI and PhyH-DII. Lane M, molecular weight markers; lane 1, culture supernatant of PhyH; lane 2, culture supernatant of PhyH-DII; lane 3,...

Ngày tải lên: 14/02/2014, 15:20