A novel method for finding similarities between unordered trees using matrix data model

Trees are capable of portraying the semi-structured data which is common in web domain. Finding similarities between trees is mandatory for several applications that deal with semi-structured data. Existing similarity methods examine a pair of trees by comparing through nodes and paths of two trees, and find the similarity between them. However, these methods provide unfavorable results for unordered tree data and result in yielding NP-hard or MAX-SNP hard complexity. In this paper, we present a novel method that encodes a tree with an optimal traversing approach first, and then, utilizes it to model the tree with its equivalent matrix representation for finding similarity between unordered trees efficiently. Empirical analysis shows that the proposed method is able to achieve high accuracy even on the large data sets.

A method to obtain ground state electroluminescence from 1.3 mu m emitting InAs/GaAs quantum dots grown by molecular beam epitaxy

1.3 mum emitting InAs/GaAs quantum dots (QDs) have been grown by molecular beam epitaxy and QD light emitting diodes (LEDs) have been fabricated. In the electroluminescence spectra of QD LEDs, two clear peaks corresponding to the ground state emission and the excited state emission are observed. It was found that the ground state emission could be achieved by increasing the number of QDs contained in the active region because of the state filling effect. This work demonstrates a way to control and tune the emitting wavelength of QD LEDs and lasers.

GCSE Geography Edexcel B. Teacher's handbook.

Ofrece un apoyo fundamental al libro del alumno pues incluye objetivos y resultados, respuestas a las actividades que ofrece éste, ideas y vocabulario clave, habilidades geográficas practicadas. Cumple con los requisitos para preparar el Edexcel GCSE (General Certificate Secondary Education) en la especificación Geografía B.

Proyecto Artes : sueño y pesadilla de España (1931-1939).

Esta innovación obtuvo Mención Honorífica en los Premios Nacionales a la Innovación Educativa 2003

Wolfgang Amadeus Mozart, Brustbild

Signatur des Originals: S 36/F01343