The aristotle approach to open hypermedia

Large-scale distributed hypermedia systems comprise a generation of powerful tools to meet the demands of the new information globalization era. The most promising of such systems have characteristics that allow for the easy adaptation both to an, actually, unpredictable technological evolution and to the constantly evolving information needs of users. Such systems are generally known as Open Hypermedia Systems (OHS). Recently, research effort has been focused on the formulation of a solid set of OHS standards (i.e., protocols, reference models and architectures) that would stem from a common understanding and thus, direct future implementations.Keywords: Open Hypermedia Systems, Hypermedia Modeling, Distributed Information System

The FunGenES Database: A Genomics Resource for Mouse Embryonic Stem Cell Differentiation

Embryonic stem (ES) cells have high self-renewal capacity and the potential to differentiate into a large variety of cell types. To investigate gene networks operating in pluripotent ES cells and their derivatives, the “Functional Genomics in Embryonic Stem Cells” consortium (FunGenES) has analyzed the transcriptome of mouse ES cells in eleven diverse settings representing sixty-seven experimental conditions. To better illustrate gene expression profiles in mouse ES cells, we have organized the results in an interactive database with a number of features and tools. Specifically, we have generated clusters of transcripts that behave the same way under the entire spectrum of the sixty-seven experimental conditions; we have assembled genes in groups according to their time of expression during successive days of ES cell differentiation; we have included expression profiles of specific gene classes such as transcription regulatory factors and Expressed Sequence Tags; transcripts have been arranged in “Expression Waves” and juxtaposed to genes with opposite or complementary expression patterns; we have designed search engines to display the expression profile of any transcript during ES cell differentiation; gene expression data have been organized in animated graphs of KEGG signaling and metabolic pathways; and finally, we have incorporated advanced functional annotations for individual genes or gene clusters of interest and links to microarray and genomic resources. The FunGenES database provides a comprehensive resource for studies into the biology of ES cells

A Script Based Approach for Interactive Multimedia Applications

This paper proposes an object oriented framework for scripting Interactive Multimedia Applications. Unlike other existing systems, the script (scenario) concept is central for the design since it handles the composition of the media objects both in spatial and temporal domains, the user interaction and system events. Moreover the proposed model incorporates an advanced scheme for complex composition in the temporal domain using a complete set of temporal operators defined in the framework. A sample application illustrates the potential of the proposed framework. 1

Pre-conditioning and other computational techniques for direct solution of linear equations

Pre-conditioning and other computational techniques for direct solution of linear equation

Integrated Multimedia Object and Application Modelling Based on Events and Scenarios

An important issue in multimedia information systems is the lack of an integrated model for complete representation of the multimedia objects and applications. In this paper we present an object oriented data base model that aims at representation of multimedia objects and applications. The application representation is based on composition (spatial and temporal) modelling and scenario modelling. An important feature of the proposed model is that there is an integrated modelling of the multimedia objects as well as of the applications that utilise them in a uniform way. Moreover the mappings between the two categories of classes are defined. 1. Introduction Multimedia applications are gaining importance in the software industry due to their impact on various user communities. An important part of a multimedia application is the scenario which describes the flow of the application in spatial and temporal domains as well as handling application and system events. Current authoring syste..

A Multimedia Title DEVELOPMENT ENVIRONMENT (MTDE)

The development of Multimedia Titles (M-Titles), i.e. multimedia applications stored on CDs, is performed by many designers and implementors using tools which run on specific platforms and often have complementary and/or overlapping functionality. The potential designer or implementor of a M-Title is restricted by the availability of tools on a selected development platform. This paper presents a Multimedia Title Development Environment (MTDE) which integrates multimedia information, tools used to produce it, as well as their formats and storage media as objects in an Asset Repository. The cooperative construction of complex multimedia objects is modelled as a DAG consisting of two types of nodes: multimedia objects and actions applied to multimedia objects. A M-Title consists of a number of complex multimedia objects linked with each other in a hypernetwork of relationships. MTDE enables a group of authors to cooperatively construct M-Titles as a hypernetwork of multimedia nodes by ac..