Ali Ben Ammar

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BACKGROUND & AIMS The human equilibrative nucleoside transporter (hENT1) protein transports gemcitabine into cells. Small retrospective studies in pancreatic cancer suggest that levels of hENT1 protein or messenger RNA may have prognostic value. We studied the predictive value of hENT1 levels in a cohort of pancreatic adenocarcinoma patients from the large(More)
A data warehouse stores a large volume of data extracted from multiple sources. A set of materialized views is defined over the base tables in order to optimize OLAP (On-Line Analytical Processing) query response time. The selection of materialized views may be static or dynamic. The dynamic selection is continually controlled by a system that calibrates(More)
In this paper, we have developed an approach to specify when updating materialized webviews. A webview is a web page that is automatically constructed from a structured database. We have introduced a new update policy called “early ondemand” update which is based on the user preferences. Then we have combines this policy with the on-demand one to update the(More)
In this paper, we propose an approach, which is based on web usage mining techniques, to recommend webviews to be materialized. The webview materialization is a term used to represent the transformation of dynamic web data into equivalent static web data. That is the creation of a static instance of a dynamic web page, at a certain point in time. In this(More)
In this paper, we propose a new constraint to select materialized webviews. The webview materialization is a term used to represent the transformation of dynamic web data into equivalent static web data. That is the creation of a static instance of a dynamic web page, at a certain point in time. Our new selection constraint consists of limiting the number(More)
BACKGROUND Increased production of interleukin 6 (IL-6) is associated with rheumatoid arthritis that acts through its receptor, IL-6R (interleukin 6 receptor). Various single nucleotide polymorphisms in the IL6R gene conferring susceptibility to rheumatoid arthritis have been identified in various populations yet these associations have not been fully(More)
The Data-Intensive Web Sites provide access to a large number of Web pages whose content is dynamically extracted from structured databases. They may be used for shopping or paying in ecommerce, for reading news in a newspaper site or to consult digital library. In this context, users often need rich content and fresh data. Several techniques have been(More)