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Roxana Danger Rafael Berlanga 《Journal of Algorithms in Cognition, Informatics and Logic》2009,64(1):16-30
This paper presents a novel Information Extraction system able to generate complex instances from free text available on the Web. The approach is based on a non-monotonical processing over ontologies, and makes use of entity recognizers and disambiguators in order to adequately extract and combine instances and their relations. Experiments conducted over the archaeology research domain provide encouraging results in both efficiency and efficacy and suggest that the tool is suitable for its application on other similar Semantic Web resources. 相似文献
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This paper belongs to a broad line of research leaded by Herrera, which encompasses a good number of numerical methods such as Localized Adjoint Method (LAM), Eulerian-Lagrangian LAM (ELAM) and Trefftz-Herrera Method. The results presented in this paper are required in order to incorporate Herrera's general theory in a Sobolev-space setting. In particular, this article introduces a class of partitions (or domain decompositions) whose internal boundaries belong to a category of manifolds with corners, here also presented. Then a version of Gauss (or divergence) theorem, in a wider sense, is established and an explicit integral formula is associated for any given linear partial differential operator L, its adjoint and concomitant. The structure of the bilinear concomitant induced by L is first determined. Then the required formula is given over that class of domain decompositions. Finally, an integral formula well on the way of the Green-Herrera formula is settled. 相似文献
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Marele AC Mas-Ballesté R Terracciano L Rodríguez-Fernández J Berlanga I Alexandre SS Otero R Gallego JM Zamora F Gómez-Rodríguez JM 《Chemical communications (Cambridge, England)》2012,48(54):6779-6781
The reaction between 1,3,5-tris(4-hydroxyphenyl)benzene and benzene-1,3,5-tricarbonyl trichloride leads to polyester condensation and formation of a novel COF on an Au(111) surface. The characterization performed in situ by means of variable temperature STM and XPS reveals the formation of an array of hexagonal cavities with ca. 2 nm size. 相似文献
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Ricardo Acosta Ortiz María Lydia Berlanga Duarte Amy Grace Savage Gómez Marco Sangermano Aida E. García Valdez Marissa Perez Ramírez 《高分子科学杂志,A辑:纯化学与应用化学》2013,50(4):361-368
A pair of novel tetrafunctional spiroorthocarbonates (TETRASOC) was prepared in three stages. First, glycerol was reacted with tetraethyl orthocarbonate to form a pair of isomeric hemi spiroorthocarbonates (HEMI SOC-OLs) by monocyclization of glycerol. Formation of these two isomers depends on terminal or adjacent hydroxyl groups of glycerol reacting with the tetraethylorthocarbonate to form five and six-membered ring HEMI SOC-OLs. Second, the HEMI SOC-OLs were made to undergo another cyclization reaction by reacting with 1,3-propanediol, to form a pair of spiroorthocarbonates with one hydroxyl group (SOC-OL). In the third stage, the SOC-OL was used as nucleophylic reactant to displace the bromine atom of pentaerythritol bromide to form the final product TETRASOC. A volume change study was carried out to determine the efficiency of TETRASOC as an anti-shrinking additive finding that even at a low concentration of 7 mol%, it caused a 2.18% expansion of the polymeric volume of a bis epoxycyclohexane monomer (3,4-EP). Dynamic Mechanical Analysis (DMA) determined that the flexibilization induced by the TETRASOC in the polyether derived from 3,4-EP did not adversely impact the mechanical properties of the polymer. 相似文献
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Suñol J. J. Saurina J. Berlanga R. Herreros D. Pagès P. Carrasco F. 《Journal of Thermal Analysis and Calorimetry》1999,55(1):57-65
A crystallization kinetics analysis of several polypropylene-polyethylene (PP-PE), PP-rich copolymers was made by means of
differential scanning calorimetry. The crystallization was studied via calorimetric measurements at different cooling rates.
Several additives were added to the base material. Some test samples were subjected to artificial ageing processes. A modified
isoconversional method was used to describe the crystallization process under non-isothermal conditions. The value of the
Avrami parameter was determined for primary and secondary crystallization.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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I Berlanga R Mas-Ballesté F Zamora 《Chemical communications (Cambridge, England)》2012,48(64):7976-7978
Exfoliation of a family of polyacetylenic porous layered covalent organic frameworks by means of a simple sonication procedure results in the obtention of nanolayer structures as observed by AFM and TEM measurements. Systematic AFM analysis of the isolated nanostructures reveals that the degree of exfoliation depends on the polymer architecture, thinner layers being observed when the pore size decreases. 相似文献
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Ivan Dotu Miguel A. Patricio A. Berlanga J. García José M. Molina 《Journal of Heuristics》2011,17(4):415-440
In this paper, we present a fast and efficient technique for the data association problem applied to visual tracking systems.
Visual tracking process is formulated as a combinatorial hypotheses search with a heuristic evaluation function taking into
account structural and specific information such as distance, shape, color, etc. 相似文献