Synthesis of core/shell quantum dots for diagnostic

In this paper, synthesis of colloidal core and core/shell quantum dots (QDs) was described. First, CdTe QDs capped with glutathione, thioglycolic or mercaptopropionic acid were prepared in aqueous phase, and used for synthesis of colloidal core/shell CdTe/ZnS QDs. Core/shell QDs were used for conjugation with bovine serum albumin (BSA) or immunoglobulin G (IgG) via different crosslinkers (CDI, EDC/NHS, EDC). QDs as well as QDs-protein/antibody conjugates were characterized via UV-Vis spectroscopy and capillary electrophoresis (CE). Based on UV-Vis spectroscopy results it was found that, with increasing concentration of BSA, fluorescence intensity of QDs decreased. CE confirmed formation of QDs-BSA and QDs-IgG conjugates

The Simplest Evaluation Measures for XML Information Retrieval that Could Possibly Work

This paper reviews several evaluation measures developed for evaluating XML information retrieval (IR) systems. We argue that these measures, some of which are currently in use by the INitiative for the Evaluation of XML Retrieval (INEX), are complicated, hard to understand, and hard to explain to users of XML IR systems. To show the value of keeping things simple, we report alternative evaluation results of official evaluation runs submitted to INEX 2004 using simple metrics, and show its value for INEX

Report on the first Twente Data Management Workshop on XML Databases and Information Retrieval

The Database Group of the University of Twente initiated a new series of workshops called Twente Data Management workshops (TDM), starting with one on XML Databases and Information Retrieval which took place on 21 June 2004 at the University of Twente. We have set ourselves two goals for the workshop series: i) To provide a forum to share original ideas as well as research results on data management problems; ii) To bring together researchers from the database community and researchers from related research fields

On Region Algebras, XML Databases, and Information Retrieval

This paper describes some new ideas on developing a logical algebra for databases that manage textual data and support information retrieval functionality. We describe a first prototype of such a system

2009: el año decisivo para Croacia

Este ARI analiza las prospectivas actuales de Croacia para adherirse en un horizonte temporal corto a la UE. Se trata del Estado candidato que tiene más avanzadas las negociaciones de ampliación con Bruselas y hasta hace poco se preveía que pudiera concluirlas en este mismo año. Sin embargo, la actual incertidumbre institucional de la UE y una serie de obstáculos concretos –singularmente, el contencioso bilateral con Eslovenia– parecen apuntar a que queda aún un difícil camino por recorrer. Estaba previsto que Croacia completase sus negociaciones con la UE hacia finales de 2009. No obstante, el camino no será nada fácil, dado que todavía le queda mucho trabajo por hacer, aparte de la firme decisión de Eslovenia de vetar la continuación del proceso de negociaciones hasta que no se resuelvan las cuestiones bilaterales abiertas. Aunque la conclusión de las negociaciones antes de finales de este año parece improbable, teniendo en cuenta el número de capítulos cerrados hasta ahora, no es del todo imposible. Gracias al nuevo sistema de negociación y a la introducción de los puntos de referencia iniciales y de cierre para todos los capítulos, el país candidato sabe de antemano cuáles son las exigencias que tiene que cumplir. Al final, si se cumplen todos los requisitos, es posible que se abran y cierren en el mismo día varios capítulos. No obstante, este nuevo sistema de negociación no puede resolver el veto puesto por Eslovenia a Croacia, a causa de una disputa territorial. Los dos países defienden firmemente su postura y es muy poco probable que se encuentre una solución fácil y rápida. Por ello, la UE deberá insistir en apartar las desavenencias bilaterales del proceso de negociación y obligar a los dos países a encontrar una solución aceptable para todos y basada en el Derecho Internacional

Exploiting Query Structure and Document Structure to Improve Document Retrieval Effectiveness

In this paper we present a systematic analysis of document retrieval using unstructured and structured queries within the score region algebra (SRA) structured retrieval framework. The behavior of di®erent retrieval models, namely Boolean, tf.idf, GPX, language models, and Okapi, is tested using the transparent SRA framework in our three-level structured retrieval system called TIJAH. The retrieval models are implemented along four elementary retrieval aspects: element and term selection, element score computation, score combination, and score propagation. The analysis is performed on a numerous experiments evaluated on TREC and CLEF collections, using manually generated unstructured and structured queries. Unstructured queries range from the short title queries to long title + description + narrative queries. For generating structured queries we exploit the knowledge of the document structure and the content used to semantically describe or classify documents. We show that such structured information can be utilized in retrieval engines to give more precise answers to user queries then when using unstructured queries