Concern-sensitive navigation: Improving navigation in web software through separation of concerns

Traditionally, the use of good techniques to improve software modularity, such as advanced separation of concerns, has no impact in the user experience, for example while navigating Web software. While the intent of these techniques is to simplify evolution and maintenance, navigation design quality is often seen as an unrelated concern. In this paper we present a novel approach for improving navigation in Web applications by using some of the core application's concerns (called navigational concerns) to derive their navigational structure. Using some realistic examples we show that, by carefully using these concerns, we can improve the user experience. Some implementation issues are discussed and a thorough comparison with related ideas in the Web Engineering field is presented.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 5074).Facultad de Informátic

Concern-sensitive navigation: Improving navigation in web software through separation of concerns

Traditionally, the use of good techniques to improve software modularity, such as advanced separation of concerns, has no impact in the user experience, for example while navigating Web software. While the intent of these techniques is to simplify evolution and maintenance, navigation design quality is often seen as an unrelated concern. In this paper we present a novel approach for improving navigation in Web applications by using some of the core application's concerns (called navigational concerns) to derive their navigational structure. Using some realistic examples we show that, by carefully using these concerns, we can improve the user experience. Some implementation issues are discussed and a thorough comparison with related ideas in the Web Engineering field is presented.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 5074).Facultad de Informátic

Engineering Concern-Sensitive Navigation Structures: Concepts, Tools and Examples

Improving navigability in Web applications is a serious challenge for developers as this quality feature is essential for applications success. In this paper we present the concept of concern-sensitive navigation, a useful conceptual tool to improve navigation by profiting from the nature of application’s concerns. Concern sensitive navigation allows enriching Web pages with information, services or links related with the context in which pages are accessed.We show how our ideas are applied during the development process (e.g. by applying wise design strategies for separation of concerns) and can also be used by final users while adapting an application (e.g. by modding). Some examples of Web 2.0 sites are used to illustrate this last possibility. We also compare our research with other similar approaches such as the construction of adaptive Web applications.Facultad de InformáticaLaboratorio de Investigación y Formación en Informática Avanzada (LIFIA

A structural computing model for dynamic service-based systems

Traditional techniques for Programming in the Large, especially Object- Oriented approaches, have been used for a considerable time and with great success in the implementation of service-based information systems. However, the systems for which these techniques have been used are static, in that the services and the data available to users are fixed by the system, with a strict separation between system and user. Our interest lies in currently emerging dynamic systems, where both the data and the services available to users are freely extensible by the users and the strict distinction between system and user no longer exists. We describe why traditional object-oriented approaches are not suitable for modelling such dynamic systems. We discuss a new architectural model, the Information Unit Hypermedia Model, IUHM, which we have designed for modelling and implementing such dynamic systems. IUHM is based upon the application of structural computing to a hypermedia-like structure, which thereby operates as a service-based architecture. We discuss the details of this model, and illustrate its features by describing some aspects of a large-scale system, built using this architecture.Evento: International Symposium, MIS 2003 (Austria, 17 al 20 de septiembre de 2003)Laboratorio de Investigación y Formación en Informática Avanzad

Engineering Concern-Sensitive Navigation Structures: Concepts, Tools and Examples

Improving navigability in Web applications is a serious challenge for developers as this quality feature is essential for applications success. In this paper we present the concept of concern-sensitive navigation, a useful conceptual tool to improve navigation by profiting from the nature of application’s concerns. Concern sensitive navigation allows enriching Web pages with information, services or links related with the context in which pages are accessed.We show how our ideas are applied during the development process (e.g. by applying wise design strategies for separation of concerns) and can also be used by final users while adapting an application (e.g. by modding). Some examples of Web 2.0 sites are used to illustrate this last possibility. We also compare our research with other similar approaches such as the construction of adaptive Web applications.Facultad de InformáticaLaboratorio de Investigación y Formación en Informática Avanzada (LIFIA

Towards document engineering

This article compares methods and techniques used in software engineering with the ones used for handling electronic documents. It shows the common features in both domains, but also the differences and it proposes an approach which extends the field of document manipulation to document engineering. It shows also in what respect document engineering is different from software engineering. Therefore specific techniques must be developped for building integrated environments for document engineering

Concern-sensitive navigation: Improving navigation in web software through separation of concerns

Traditionally, the use of good techniques to improve software modularity, such as advanced separation of concerns, has no impact in the user experience, for example while navigating Web software. While the intent of these techniques is to simplify evolution and maintenance, navigation design quality is often seen as an unrelated concern. In this paper we present a novel approach for improving navigation in Web applications by using some of the core application's concerns (called navigational concerns) to derive their navigational structure. Using some realistic examples we show that, by carefully using these concerns, we can improve the user experience. Some implementation issues are discussed and a thorough comparison with related ideas in the Web Engineering field is presented.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 5074).Facultad de Informátic

Engineering Concern-Sensitive Navigation Structures, Concepts, Tools and Examples

Improving navigability in Web applications is a serious challenge for developers as this quality feature is essential for applications success. In this paper we present the concept of concern-sensitive navigation, a useful conceptual tool to improve navigation by profiting from the nature of application’s concerns. Concern sensitive navigation allows enriching Web pages with information, services or links related with the context in which pages are accessed.We show how our ideas are applied during the development process (e.g. by applying wise design strategies for separation of concerns) and can also be used by final users while adapting an application (e.g. by modding). Some examples of Web 2.0 sites are used to illustrate this last possibility. We also compare our research with other similar approaches such as the construction of adaptive Web applications

Engineering Concern-Sensitive Navigation Structures: Concepts, Tools and Examples

Improving navigability in Web applications is a serious challenge for developers as this quality feature is essential for applications success. In this paper we present the concept of concern-sensitive navigation, a useful conceptual tool to improve navigation by profiting from the nature of application’s concerns. Concern sensitive navigation allows enriching Web pages with information, services or links related with the context in which pages are accessed.We show how our ideas are applied during the development process (e.g. by applying wise design strategies for separation of concerns) and can also be used by final users while adapting an application (e.g. by modding). Some examples of Web 2.0 sites are used to illustrate this last possibility. We also compare our research with other similar approaches such as the construction of adaptive Web applications.Facultad de InformáticaLaboratorio de Investigación y Formación en Informática Avanzada (LIFIA

EadGen, un environnement ouvert de production en ligne basé sur XML et XSL-T

Les actes peuvent être commandés à l'adresse suivante : http://tice2002.insa-lyon.fr/fr/sommaire.htmlThis article describes EadGen, an authoring environment designed and implemented for producing documents for distant learning. It results from a collaboration between CNAM and CNRS. EadGen offers an open production chain which is fully programmable by specialists (author, collection director, graphist...), each one being responsible of his own expertise and working with his own specialized tools. The production chain runs from the content authoring to the delivering of on-line documents. It automatically transforms learning material into interactive documents, according to the specifications elaborated by the collection director in order to build customizable learning paths. These specifications result from negotiation between the authors and the collection director and correspond to mediatisation requirements which are common to a set of courses. The requirements are expressed by means of open authoring languages which can be adapted on demand, owing to XML extensibility. XSL-T transforms are used to express how final documents are produced. The original point of our approach is to make XML use transparent to users by providing adaptable mark-up languages which offer a light notation and the semantics of which can be easily specified.Cet article décrit l'environnement auteur EadGen que nous avons conçu, développé et mis en service pour le CNAM, avec le concours du CNRS pour la production de documents pédagogiques en ligne. Il offre une chaîne de production « ouverte », totalement paramétrable par des spécialistes (auteur, responsable de collection, graphiste...), chacun étant responsable de sa propre expertise et disposant de ses propres outils spécialisés. La chaîne de production va de la production du contenu par l'auteur à la mise en ligne des documents. Elle transforme, de façon automatique, une matière première pédagogique en des documents interactifs, conformément aux spécifications d'un responsable de collection pour construire des parcours pédagogiques personnalisables. Elle s'appuie sur la spécification des besoins de médiatisation utiles dans un ensemble de matières, ces besoins étant négociés entre les auteurs et le responsable d'une collection. Ils sont exprimés au moyen de langages auteur «ouverts », adaptables à la demande, grâce à l'extensibilité de XML. La spécification de la production du document cible est exprimée au moyen de transformations XSL-T. L'originalité de cette approche est d'alléger pour l'auteur l'emploi de XML en lui substituant des langages de balisage adaptables, dont la notation est beaucoup plus légère et dont la sémantique peut être facilement spécifiée