Annotation scheme for citation classification in scientific literature

El análisis de citas bibliográficas que usa variaciones de métodos de conteo provoca deformaciones en la evaluación del impacto. Para enriquecer el cálculo de los factores de impacto se necesita entender el tipo de influencia de los aportes de un investigador sobre el autor que los menciona. Para ello, se requiere realizar análisis de contenido del contexto de las citas que permita obtener su función, polaridad e influencia. El presente artículo trata sobre la definición de un esquema de anotación tendiente a la creación de un corpus de acceso público que sea la base de trabajo colaborativo en este campo, con miras al desarrollo de sistemas que permitan llevar adelante tareas de análisis de contenido con el objetivo planteado.Citation analysis that uses counting methods causes deformations in impact factor assessment. To enrich impact factor calculation is necessary to understand the kind of influence that the contributions of an author have over another´s work. For this purpose, it is required to perform citation content analysis to obtain its function, polarity and influence in a context within an article that mentioned it. In this paper, we focus in the definition of an annotation scheme aimed at creating a public access corpus that be the basis of collaborative work in this field, in order to develop citation content analysis to obtain criteria for impact evaluation

Using classifiers to predict linear feedback shift registers

Proceeding of: IEEE 35th International Carnahan Conference on Security Technology. October 16-19, 2001, LondonPreviously (J.C. Hernandez et al., 2000), some new ideas that justify the use of artificial intelligence techniques in cryptanalysis are presented. The main objective of that paper was to show that the theoretical next bit prediction problem can be transformed into a classification problem, and this classification problem could be solved with the aid of some AI algorithms. In particular, they showed how a well-known classifier called c4.5 could predict the next bit generated by a linear feedback shift register (LFSR, a widely used model of pseudorandom number generator) very efficiently and, most importantly, without any previous knowledge over the model used. The authors look for other classifiers, apart from c4.5, that could be useful in the prediction of LFSRs. We conclude that the selection of c4.5 by Hernandez et al. was adequate, because it shows the best accuracy of all the classifiers tested. However, we have found other classifiers that produce interesting results, and we suggest that these algorithms must be taken into account in the future when trying to predict more complex LFSR-based models. Finally, we show some other properties that make the c4.5 algorithm the best choice for this particular cryptanalytic problem.Publicad

El nuevo régimen de la reutilización de las aguas depuradas: en especial las novedades en el nuevo Plan Hidrológico de la demarcación del Segura

La reutilización de las aguas depuradas constituye una práctica adecuada para incrementar la disponibilidad del recurso. Sin embargo, las implicaciones sanitarias que pudiera conllevar hacen necesario la instauración de un marco jurídico que otorgue seguridad a los diferentes sectores implicados. La incorporación de las aguas regeneradas a la gestión integral del dominio público hidráulico implica, a su vez, su consideración en los nuevos planes hidrológicos recientemente aprobados. En la Demarcación Hidrográfica del Segura, donde el recurso se encuentra sometido a una intensa presión por los actuales y potenciales usuarios, la reutilización puede representar un relevante recurso adicional

La custodia del territorio como instrumento complementario para la protección de los espacios naturales

La presente nota analiza la evolución normativa de la custodia del territorio como estrategia complementaria de protección de los espacios naturales caracterizada por las notas de participación y voluntariedad y que goza de una creciente vitalidad y posibilidades de futuro. En especial, se trata de subrayar la evolución de los mecanismos de protección que, si bien descansaban en el ejercicio unilateral de potestades administrativas, de modo creciente se orientan a estrategias acordadas con los sectores interesados y afectados, como modo de conseguir mayor apoyo social y colaboración de los particulares en la consecución de los fines de interés general, en este caso, la utilización racional de los recursos naturales, la garantía del derecho a disfrutar de un medio ambiente adecuado y el más cabal cumplimiento de los deberes de protección

Rudiments of Holography

An elementary introduction to Maldacena's AdS/CFT correspondence is given, with some emphasis in the Fefferman-Graham construction. This is based on lectures given by one of us (E.A.) at the Universidad Autonoma de Madrid.Comment: 60 pages, additional misprints corrected, references adde

Nutrient distribution in flowering stems, nutrient removal and fertilization of three proteaceae cultivars

Several parameters of flowering stems of two cultivars of protea Leucospermum cordifolium (Knight) Fourc (Succession II and Tango) and one of protea Protea L. (Protea susannae x magnifica Susara) were studied in different commercial plantations. These included length and weight measures, nutrient concentrations of detached parts (flower heads, leaves and stems), and removal of nutrients of harvested flowers. A base for fertilization was also calculated. Harvested flowers of Susara removed more P, K and Cu than Succession II and Tango, and more Ca and Fe than Tango. Succession II showed the highest Zn removal. The P and Cu removal by the crop of Susara were significantly higher than those of both Leucospermum cultivars, while K, Ca, and Fe outputs of Susara exceeded only those of Tango. The nutrient top removals amounted to 4.55 g m-2 of N, 0.48 g m-2 of P, and 5.26 g m-2 of K. Data as a base to supply fertilizer to each cultivar are given, with N:P:K ratios of 1:0.08:0.87 for Succession II, 1:0.08:0.83 for Tango and 1:0.10:1.27 for Susara. DOI: http://dx.doi.org/10.3329/ijarit.v4i1.21094 Int. J. Agril. Res. Innov. & Tech. 4 (1): 64-69, June, 201

Strain balanced quantum posts

Quantum posts are assembled by epitaxial growth of closely spaced quantum dot layers, modulating the composition of a semiconductor alloy, typically InGaAs. In contrast with most self-assembled nanostructures, the height of quantum posts can be controlled with nanometer precision, up to a maximum value limited by the accumulated stress due to the lattice mismatch. Here we present a strain compensation technique based on the controlled incorporation of phosphorous, which substantially increases the maximum attainable quantum post height. The luminescence from the resulting nanostructures presents giant linear polarization anisotropy.Comment: Submitted to Applied Physics Letters (7th March 2011). 4 pages, 4 figure

The Dirichlet Obstruction in AdS/CFT

The obstruction for a perturbative reconstruction of the five-dimensional bulk metric starting from the four-dimensional metric at the boundary,that is, the Dirichlet problem, is computed in dimensions $6\leq d\leq 10$ and some comments are made on its general structure and, in particular, on its relationship with the conformal anomaly, which we compute in dimension $d=8$.Comment: 13 pages, references added (this paper supersedes hep-th/0206140, "A Note on the Bach Tensor in AdS/CFT", which has been withdrawn

Synthesis, structure and reactivity of Pd and Ir complexes based on new lutidine-derived NHC/phosphine mixed pincer ligands

Coordination studies of new lutidine-derived hybrid NHC/phosphine ligands (CNP) to Pd and Ir have been performed. Treatment of the square-planar [Pd(CNP)Cl](AgCl2) complex 2a with KHMDS produces the selective deprotonation at the CH2P arm of the pincer to yield the pyridine-dearomatised complex 3a. A series of cationic [Ir(CNP)(cod)]+ complexes 4 has been prepared by reaction of the imidazolium salts 1 with Ir(acac)(cod). These derivatives exhibit in the solid state, and in solution, a distorted trigonal bipyramidal structure in which the CNP ligands adopt an unusual C(axial)–N(equatorial)–P(equatorial) coordination mode. Reactions of complexes 4 with CO and H2 yield the carbonyl species 5a(Cl) and 6a(Cl), and the dihydrido derivatives 7, respectively. Furthermore, upon reaction of complex 4b(Br) with base, selective deprotonation at the methylene CH2P arms is observed. The, thus formed, deprotonated Ir complex 8b reacts with H2 in a ligand-assisted process leading to the trihydrido complex 9b, which can also be obtained by reaction of 7b(Cl) with H2 in the presence of KOtBu. Finally, the catalytic activity of Ir–CNP complexes in the hydrogenation of ketones has been briefly assessed.CTQ2013-45011-P, CTQ2016-80814-R and CTQ2014 -51912-RE