A decade of Portuguese research in e-government: Evolution, current standing, and ways forward

In this paper, we present an investigation of the Portuguese research on e-government. Bibliometric techniques are used to explore all the documents published by researchers affiliated to Portuguese institutions from 2005 to 2014 and listed in the Scopus® database. Research production, impact, source types, language used, subject areas, topics, scopes, methods, authors, institutions, networks, and international cooperation are analysed and discussed. We conclude that so that Portuguese research on e-government can evolve, more researchers should be involved, international cooperation should be developed, and more attention should be given to the study of the reasons behind the very good results of the country in the provision of e-government services, as measured by the international rankings. By establishing the evolution and current standing of e-government research in Portugal and exploring the ways forward, our conclusions may prove useful to e-government researchers, research managers, and research policy makers. © Copyright 2016 Inderscience Enterprises Ltd

Is Moodle Accessible for Visually Impaired People?

Proceedings of: 7th International Conference on Web Information Systems and Technologies. Noordwijkerhout, The Netherlands, May 6-9, 2011.Most educational centers are currently using e-learning tools to provide the pedagogical resources for the students, especially in higher education. Nevertheless, some students are not able to access to this information because these authoring tools are not as accessible as they should be. The main aim of this paper is to evaluate if one of the most widely e-learning tool used around the world, Moodle, is accessible for visually impaired people. The evaluation shows that the accessibility guidelines provided by the World Wide Web Consortium (W3C) are not accomplished by the tool. Moreover, it shows that people using screen readers are not able to access to the majority of the functionality of Moodle.The work presented in this paper has been partially founded by MA2VICMR (S2009/TIC-1542), GEMMA (TSI-020302-2010-141) and SAGAS (TSI-020100-2010-184) research projects.Publicad

Quality of service acceptance model for cloud service in Palestinian higher education institutions

Cloud computing service has been found to be effective in increasing the capacity of Higher Education Institutions (HEIs) since it delivers services through enhanced information technology capabilities. Quality of Service (QoS) in cloud service is considered a rapidly growing phenomenon to guarantee a high level of service and is identified as an essential aspect of service provision. Despite the importance of QoS, identifying the QoS acceptance factors by decision-makers for cloud based services in HEIs in Palestine has been a critical challenge. There are limited studies conducted on QoS acceptance factors from Technological, Organizational, Environmental and Human aspects, hence, this study addressed this gap and investigated potential factors influencing QoS acceptance by decision makers in the context of HEIs in Palestine. This study proposed a research model by combining Technological Organizational Environmental (TOE) framework and Human Organizational Technology (HOT) fit framework. The research model was developed through the factors identified through a comprehensive literature review. Seventeen hypotheses were developed and the significance of the relationship between the factors were investigated using a quantitative approach. A survey method using a paper-based questionnaire was employed to collect data from 267 decision makers in the target higher education institutions. The data were analysed using Structural Equation Modelling (SEM) with Partial Least Squares (PLS) technique. The finding used to develop the QoS acceptance model facilitated the understanding of factors impacting QoS acceptance by the HEIs in Palestine. The results that indicated the most significant factors for QoS acceptance by HEIs in Palestine were Availability (P= 0.046, p-value = 0.002), Compatibility (P= 0.043, p-value= 0.001), Security Concern (P= 0.037, p-value= 0.006), and Relative Advantage (P= 0.046, p-value= 0.001), Vendor Support (P= 0.037, p-value= 0.025), Legal Issues (P= 0.068, p-value= 0.027) and Competitive Pressure (P= 0.064, p-value= 0.028). The results of this study and the proposed model would assist the practitioners in HEIs to better understand the importance of QoS acceptance in cloud service

Sur les traces du futur : entre comprendre et predire

Empirical modelling, which relies on data, also referred to as traces, is an approach for modelling phenomena,systems or objects. It has the characteristics of modeling the “reality” of these phenomena.The researches I have conducted are dedicated to both descriptive and predictive modelling. They focusedon robustness, complexity and quality of the models, but also on the identification of triggering orexplanatory factors in data.My contributions have been applied and validated in the frame of e-commerce and, more recently, one-education through the use of traces of behavior, of preferences, etc.My future research goes a step further and will focus on prescriptive modelling : what can be done toreach a given objective ? Some considerations related to algorithms that can explain themselves and thatare transparent (explainable AI), as well as the management of multiple sources of data will be studied.La modélisation empirique, reposant sur des données de réalisation ou de traces, est une approche demodélisation de phénomènes, systèmes ou objets, et a la caractéristique de s’intéresser à la “réalité” de cesderniers. Les travaux de recherche que je mène s’intéressent à la modélisation descriptive et prédictive. Jeme suis intéressée à des problématiques générales telles que la robustesse, la complexité, et la qualité desmodèles, tout en me focalisant sur des défis plus spécifiques tels que le démarrage à froid et le manquegénéral de données, mais aussi l’identification de facteurs influents ou explicatifs au sein des données.Mes contributions ont été appliquées et validées principalement sur en contexte e-commerce et plusrécemment en éducation : traces de comportement, de préférences, etc.Mes recherches futures iront un pas plus loin dans la modélisation, et auront pour objectif la modélisationprescriptive : que faire pour arriver à un but fixé ? Des aspects relatifs à la transparence et àl’explicabilité des algorithmes, de même qu’à la gestion de sources de données multiples seront au coeurde ces travaux

ScaleSem (model checking et web sémantique)

Le développement croissant des réseaux et en particulier l'Internet a considérablement développé l'écart entre les systèmes d'information hétérogènes. En faisant une analyse sur les études de l'interopérabilité des systèmes d'information hétérogènes, nous découvrons que tous les travaux dans ce domaine tendent à la résolution des problèmes de l'hétérogénéité sémantique. Le W3C (World Wide Web Consortium) propose des normes pour représenter la sémantique par l'ontologie. L'ontologie est en train de devenir un support incontournable pour l'interopérabilité des systèmes d'information et en particulier dans la sémantique. La structure de l'ontologie est une combinaison de concepts, propriétés et relations. Cette combinaison est aussi appelée un graphe sémantique. Plusieurs langages ont été développés dans le cadre du Web sémantique et la plupart de ces langages utilisent la syntaxe XML (eXtensible Meta Language). Les langages OWL (Ontology Web Language) et RDF (Resource Description Framework) sont les langages les plus importants du web sémantique, ils sont basés sur XML.Le RDF est la première norme du W3C pour l'enrichissement des ressources sur le Web avec des descriptions détaillées et il augmente la facilité de traitement automatique des ressources Web. Les descriptions peuvent être des caractéristiques des ressources, telles que l'auteur ou le contenu d'un site web. Ces descriptions sont des métadonnées. Enrichir le Web avec des métadonnées permet le développement de ce qu'on appelle le Web Sémantique. Le RDF est aussi utilisé pour représenter les graphes sémantiques correspondant à une modélisation des connaissances spécifiques. Les fichiers RDF sont généralement stockés dans une base de données relationnelle et manipulés en utilisant le langage SQL ou les langages dérivés comme SPARQL. Malheureusement, cette solution, bien adaptée pour les petits graphes RDF n'est pas bien adaptée pour les grands graphes RDF. Ces graphes évoluent rapidement et leur adaptation au changement peut faire apparaître des incohérences. Conduire l application des changements tout en maintenant la cohérence des graphes sémantiques est une tâche cruciale et coûteuse en termes de temps et de complexité. Un processus automatisé est donc essentiel. Pour ces graphes RDF de grande taille, nous suggérons une nouvelle façon en utilisant la vérification formelle Le Model checking .Le Model checking est une technique de vérification qui explore tous les états possibles du système. De cette manière, on peut montrer qu un modèle d un système donné satisfait une propriété donnée. Cette thèse apporte une nouvelle méthode de vérification et d interrogation de graphes sémantiques. Nous proposons une approche nommé ScaleSem qui consiste à transformer les graphes sémantiques en graphes compréhensibles par le model checker (l outil de vérification de la méthode Model checking). Il est nécessaire d avoir des outils logiciels permettant de réaliser la traduction d un graphe décrit dans un formalisme vers le même graphe (ou une adaptation) décrit dans un autre formalismeThe increasing development of networks and especially the Internet has greatly expanded the gap between heterogeneous information systems. In a review of studies of interoperability of heterogeneous information systems, we find that all the work in this area tends to be in solving the problems of semantic heterogeneity. The W3C (World Wide Web Consortium) standards proposed to represent the semantic ontology. Ontology is becoming an indispensable support for interoperability of information systems, and in particular the semantics. The structure of the ontology is a combination of concepts, properties and relations. This combination is also called a semantic graph. Several languages have been developed in the context of the Semantic Web. Most of these languages use syntax XML (eXtensible Meta Language). The OWL (Ontology Web Language) and RDF (Resource Description Framework) are the most important languages of the Semantic Web, and are based on XML.RDF is the first W3C standard for enriching resources on the Web with detailed descriptions, and increases the facility of automatic processing of Web resources. Descriptions may be characteristics of resources, such as the author or the content of a website. These descriptions are metadata. Enriching the Web with metadata allows the development of the so-called Semantic Web. RDF is used to represent semantic graphs corresponding to a specific knowledge modeling. RDF files are typically stored in a relational database and manipulated using SQL, or derived languages such as SPARQL. This solution is well suited for small RDF graphs, but is unfortunately not well suited for large RDF graphs. These graphs are rapidly evolving, and adapting them to change may reveal inconsistencies. Driving the implementation of changes while maintaining the consistency of a semantic graph is a crucial task, and costly in terms of time and complexity. An automated process is essential. For these large RDF graphs, we propose a new way using formal verification entitled "Model Checking".Model Checking is a verification technique that explores all possible states of the system. In this way, we can show that a model of a given system satisfies a given property. This thesis provides a new method for checking and querying semantic graphs. We propose an approach called ScaleSem which transforms semantic graphs into graphs understood by the Model Checker (The verification Tool of the Model Checking method). It is necessary to have software tools to perform the translation of a graph described in a certain formalism into the same graph (or adaptation) described in another formalismDIJON-BU Doc.électronique (212319901) / SudocSudocFranceF

Accessible collaborative learning environments for mobile devices

Mención Internacional en el título de doctorNew technologies and devices are being used in learning environments by teachers and students. Some of these tools are computer supported collaborative learning tools that help them collaborate with each other and share knowledge. Chat applications are one of these tools. These tools allow sharing materials and knowledge or solve doubts in real time without the necessity of being in the same room at the same time. Especially, these tools are being used in mobile devices which make collaboration more ubiquitous because people can use them everywhere. However, existing chat applications are not fully accessible and present accessibility barriers that users need to face every day. People with disabilities encounter these barriers every day despite of they have the same rights as people without disabilities according to multiple regulations in many countries around the World. These barriers might not be faced by people with disabilities only, people with disabilities who use mobile devices in different environments e.g. on the move or in bright environments can suffer similar problems as people with disabilities. This thesis aims to identify the accessibility barriers that m-learning chat applications have. Besides, considering these problems, this research aims, as far as possible, to improve the accessibility of chat applications. As a result, people with and without disabilities could collaborate with each other without facing accessibility barriers that will mermaid their learning. The main objectives of this thesis are: firstly, identify accessibility barriers that people with and without disabilities face when they use chat applications; secondly, specify the requirements that accessible m-learning chat applications should include for being accessible; and finally, provide an accessible interaction improvement for these applications. All these objectives have been achieved following a user centred design approach. As a result, more than 200 people with and without disabilities have participated in this thesis.Las tecnologías de la información se utilizan en entornos educativos para ayudar a los estudiantes y profesores a compartir y mejorar el aprendizaje. Algunas de estas herramientas permiten a los estudiantes compartir conocimiento y aprender colaborando entre sí, y se suelen denominar herramientas de aprendizaje colaborativas. Un ejemplo de herramienta colaborativa es la aplicación Chat. A través de estas aplicaciones, los profesores y estudiantes pueden compartir recursos y conocimiento o resolver dudas en tiempo real, sin la necesidad de encontrarse en la misma aula al mismo tiempo. Estas herramientas se utilizan hoy en día en dispositivos móviles que permiten realizar colaboraciones de forma ubicua, ya que se pueden utilizar desde cualquier lugar. Sin embargo, hoy en día las aplicaciones chats que existen en el mercado no son completamente accesibles, presentando barreras de accesibilidad que los usuarios tienen que sortear cada día. Las personas con discapacidad sufren estas barreras, a pesar de que están amparados por leyes de todo el mundo que especifican que tienen los mismos derechos que las personas sin discapacidad. Estas barreras de accesibilidad no son barreras que sólo personas con discapacidad pueden percibir, personas sin discapacidad pueden sufrir los mismos problemas cuando utilizan estas herramientas en dispositivos móviles, cuando se están desplazando o cuando utilizan los dispositivos en espacios abiertos con mucha luz. En esta tesis doctoral se pretende estudiar las barreras de accesibilidad que presentan las aplicaciones chat en entornos educativos con dispositivos móviles. De esta forma, se trata, en la medida de lo posible, de mejorar la accesibilidad de este tipo de aplicaciones. Como resultado, personas con discapacidad y sin discapacidad podrán colaborar entre sí, sin encontrar problemas de accesibilidad. Los tres objetivos principales de esta tesis son: primero, identificar los problemas que las personas con y sin discapacidad tienen cuando utilizan los chats; segundo, especificar los requisitos de accesibilidad que los chats deben incluir en entornos de aprendizaje utilizando dispositivos móviles; y finalmente, realizar una propuesta de mejora de accesibilidad de este tipo de aplicaciones. Todos estos objetivos se han alcanzado siguiendo para ello un diseño centrado en el usuario en el que se ha contado con la participación de más de 200 personas con y sin discapacidad para obtener cada una de las aportaciones resultado de los objetivos propuestos.Programa Oficial de Doctorado en Ciencia y Tecnología InformáticaPresidente: Covadonga Rodrigo San Juan.- Secretario: María Belén Ruiz Mezcua.- Vocal: Leonel Caseiro Morgad

Bringing back 'Japan'? Prime minister Abe's political rhetoric in critical perspective.

The thesis provides a detailed analysis of prime minister of Japan, Shinzō Abe’s, political rhetoric. Adopting a critical realist approach to the analysis of political discourse, the thesis aims to identify how Abe sought to legitimate the substantial changes to the state, its international conduct, and relationship with its citizens, including the reinterpretation of Article 9 of the constitution, Japan’s so-called ‘Peace Clause’. Abe returned to office in December 2012 promising to ‘bring back’ Japan, but under this aegis, the Abe administration has enacted wholesale changes to Japan’s social security, national economy and security agenda. While many of these changes are examined throughout, the thesis adopts depoliticization theory as an analytical tool and explanatory factor to discuss the changes in Japanese politics by parsing depoliticization into governmental, societal, and discursive forms. The analysis demonstrates how Abe relied on discursive depoliticization to legitimate changes by implementing a mixed-methods approach to discourse analysis using text-mining software to identify salient areas of speech, frame analysis to further characterize them, and critical discourse analysis for the micro-analysis of text. The thesis argues that Abe effectively depoliticized politically divisive issues by relying on the neoliberal account of globalization to justify substantial changes to Japan’s security agenda, economy and social infrastructure. In order to reveal the process of depoliticization, the discursive analysis is supplemented with an analysis of two major foreign policy initiatives of the Abe administration, the Trans-Pacific Partnership and ‘Positive Pacifism’. These case studies enable us to conclude that, although Abe’s rhetoric is largely consistent with neoliberal doctrines, his administration’s actions reflect a neonationalist ideology and political realism aimed at expanding military and economic power to encircle China and increase Japan’s regional and international influence, while relying on depoliticizing tactics to legitimate the process of change underway