Online tables of contents for books: effect on usage*

Objectives: To explore whether the presence of online tables of contents (TOC) in an online catalog affects circulation (checkouts and inhouse usage). Two major questions were posed: (1) did the presence of online tables of contents for books increase use, and, (2) if it did, what factors might cause the increase?

Chronica do Serenissimo Senhor Rei D. Manoel / escrita por Damião de Goes ; e novamente dada a luz, e offerecida ao Illustrissimo Senhor D. Rodrigo Antonio de Noronha, e Menezes por Reinerio Bocache

Referência: Library of Congress - Online Catalog.

Sophismas anarchicos : exame critico de diversas declarações dos direitos do homem, e do cidadão

Traduzido em linguagem e offerecido a Assembléa Geral, Constituinte, e Legislativa do Imperio do Brazil, por R.P.B.

Indexation et classification de la musique : approches d'analyse musicale, descripteurs et plateformes de recherche.

Travail réalisé à l'École de bibliothéconomie et des sciences de l'information (EBSI), Université de Montréal, sous la direction de Mme Audrey Laplante dans le cadre du cours SCI6850 Recherche individuelle, à l'automne 2012.

Modeling the evolution of item rating networks using time-domain preferential attachment

The understanding of the structure and dynamics of the intricate network of connections among people that consumes products through Internet appears as an extremely useful asset in order to study emergent properties related to social behavior. This knowledge could be useful, for example, to improve the performance of personal recommendation algorithms. In this contribution, we analyzed five-year records of movie-rating transactions provided by Netflix, a movie rental platform where users rate movies from an online catalog. This dataset can be studied as a bipartite user-item network whose structure evolves in time. Even though several topological properties from subsets of this bipartite network have been reported with a model that combines random and preferential attachment mechanisms [Beguerisse Díaz et al., 2010], there are still many aspects worth to be explored, as they are connected to relevant phenomena underlying the evolution of the network. In this work, we test the hypothesis that bursty human behavior is essential in order to describe how a bipartite user-item network evolves in time. To that end, we propose a novel model that combines, for user nodes, a network growth prescription based on a preferential attachment mechanism acting not only in the topological domain (i.e. based on node degrees) but also in time domain. In the case of items, the model mixes degree preferential attachment and random selection. With these ingredients, the model is not only able to reproduce the asymptotic degree distribution, but also shows an excellent agreement with the Netflix data in several time-dependent topological properties.

Beschrijving van de schilderij voorstellende den veldslag bij Waterloo : op den 18 junij 1815 /

Date from online catalog of Niederländische Nationalbibliothek, consulted 2/12/09.

UTILIZACIÓN DEL CATÁLOGO EN LÍNEA DEL SISTEMA DE INFORMACIÓN DOCUMENTAL DE LA UNIVERSIDAD NACIONAL POR LOS USUARIOS DE LA BIBLIOTECA “JOAQUÍN GARCÍA MONGE”: GRADO DE CONOCIMIENTO

¿Qué grado de conocimiento y éxito en la localización de la información tienen los usuarios de la Biblioteca “Joaquín García Monge” en la utilización del catálogo en línea del Sistema de Información Documental de la Universidad Nacional (SIDUNA), Heredia, Costa Rica?. 

El Catálogo en Línea Diseño e Implementación

“El catálogo en línea será el símbolo más grande de cambio, elinstrumento más grande de cambio y el resultado más grandede la revolución en bibliotecas...”

General catalog.

Vols. for issued as its Bulletin.