The effectiveness of the web accessibility audit as a motivational and educational tool in inclusive web design

The importance of Web sites that can be accessed and used regardless of an individual?s disability is critical. One barrier to improved accessibility of Web sites relates to the gap between Web authors? technical knowledge of Web accessibility guidelines and a broader understanding of the challenges facing disabled people when interacting with Web sites.This thesis describes the development and evaluation of a Web accessibility auditing methodology with the dual aims of accurately identifying accessibility barriers present in a Web site, and presenting the audit findings and recommended actions in a way that informs, educates and engenders an improved understanding of accessibility amongst the audience.The methodology was piloted amongst a sample of Web sites, validated against other published accessibility evaluation methodologies, and adopted for subsequent audits carried out on a commercial basis. The impact on recipient organisations and individuals of a sample of 14 commercially commissioned audits was then evaluated. Audit recipients were surveyed, and each Web site audited evaluated to identify any changes to accessibility, and the presence of evidence of changes or improvements to accessibility strategy.Strong indications were found that the audits had a positive impact both on individuals and on the commissioning organisations. The audits were identified as having a particularly positive educational and motivational impact on recipients who did not identify themselves as having expertise in Web accessibility. There was also evidence that the design approach promoted by the audits had been adopted and applied by some of the commissioning organisations. The majority of respondents cited the recommendations for improvement as the most valuable feature of the audit. This illustrates a tension between the importance of presenting specific recommendations for actions and providing richer narrative accounts of evaluation stages to encourage a more holistic appreciation of accessibility.The particular benefits of the study are found in the identification of evidence of impact of commercially-commissioned Web accessibility audits over a period of time to recipients of varying characteristics. A number of areas for further investigation have been identified, focusing on investigating the potential value of the accessibility audit in providing more ?experiential? evaluation stages.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Understanding blind Users' Web Accessibility and Usability problems.

Our motivation for this research is the belief that blind users cannot participate effectively in routine Web-based activities due to the lack of Web accessibility and usability for non-visual interaction. We take a cognitive, user-centered, task-oriented approach to develop an understanding of accessibility and usability problems that blind users face in Web interactions. This understanding is critically needed to determine accessibility and usability requirements for non-visual Web interaction. We employ verbal protocol analysis for an in-depth examination of difficulties participants face in completing an online assessment through a course management system. We analyze the problems that hinder accessibility and usability and explain the nature of these problems in terms of design principles. Our study contributes an effective method for qualitative evaluation of Web accessibility and usability. Our findings will guide future research to develop more accessible and usable Web applications for blind users

Instructional eLearning technologies for the vision impaired

The principal sensory modality employed in learning is vision, and that not only increases the difficulty for vision impaired students from accessing existing educational media but also the new and mostly visiocentric learning materials being offered through on-line delivery mechanisms. Using as a reference Certified Cisco Network Associate (CCNA) and IT Essentials courses, a study has been made of tools that can access such on-line systems and transcribe the materials into a form suitable for vision impaired learning. Modalities employed included haptic, tactile, audio and descriptive text. How such a multi-modal approach can achieve equivalent success for the vision impaired is demonstrated. However, the study also shows the limits of the current understanding of human perception, especially with respect to comprehending two and three dimensional objects and spaces when there is no recourse to vision

WebVoice: Speech Access to Traditional Web Content for Blind Users

Traditional web content and navigation features are made available to blind users by converting a webpage into a speech enabled X+V application, which allows blind users to follow the links present in a web page via speech commands. Also the application can read the different paragraphs and search for a word. This X+V application runs on the Opera browser

Techniques d'interaction multimodales pour l'accès aux mathématiques par des personnes non-voyantes

Cette thèse s‟inscrit dans le domaine de l‟interaction Homme-Machine et plus précisément dans celui des interfaces multimodales destinées aux non-voyants. Elle a pour thème principal la présentation des expressions mathématiques aux non-voyants. Pour les étudiants non-voyants, apprendre les mathématiques est une tâche ardue et peut constituer une barrière, les séparant des disciplines techniques. Les travaux de recherche présentés ici décrivent les problèmes rencontrés dans la conception d‟un système permettant l‟accès aux mathématiques pour les utilisateurs déficients visuels. En effet, nous présentons une analyse des outils existants puis nous proposons des solutions pour combler leurs insuffisances. Nous exposons les techniques utilisées au sein de notre système pour répondre aux problèmes de la présentation des expressions mathématiques aux non-voyants. Nous exploitons la multimodalité comme technique d‟interaction pour développer des applications destinées à ce type d‟utilisateurs parce qu‟elle offre plusieurs opportunités grâce à sa richesse des interactions. Nous dotons également notre système d‟un comportement intelligent pour assurer une certaine autonomie à l‟utilisateur. En effet, le système est capable de présenter l‟information en fonction du contexte de l‟interaction (c-à-d. l‟utilisateur, son environnement et sa machine) et de la nature de l‟information. Le système est « pervasif » et adaptatif. L‟accès à l‟information est assuré n‟importe où n‟importe quand et il s‟adapte dynamiquement aux changements du contexte tout en fournissant continuellement des services à l‟utilisateur non-voyant, sans intervention humaine. Pour rendre le système adaptatif, nous avons élaboré un modèle qui détermine la complexité de l‟expression mathématique et nous avons intégré une technique d‟apprentissage automatique pour implémenter les mécanismes de décisions. Enfin, l‟architecture proposée est du type multi-agent. Ces techniques ont été validées par des études de cas et en utilisant les réseaux de Pétri et l‟outil de simulations JADE

Proceedings of the 8th international conference on disability, virtual reality and associated technologies (ICDVRAT 2010)

The proceedings of the conferenc

Proceedings of the 6th international conference on disability, virtual reality and associated technologies (ICDVRAT 2006)

The proceedings of the conferenc

Proceedings of the 3rd international conference on disability, virtual reality and associated technologies (ICDVRAT 2000)

The proceedings of the conferenc

Collaborative adaptive accessibility and human capabilities

This thesis discusses the challenges and opportunities facing the field of accessibility, particularly as computing becomes ubiquitous. It is argued that a new approach is needed that centres around adaptations (specific, atomic changes) to user interfaces and content in order to improve their accessibility for a wider range of people than targeted by present Assistive Technologies (ATs). Further, the approach must take into consideration the capabilities of people at the human level and facilitate collaboration, in planned and ad-hoc environments. There are two main areas of focus: (1) helping people experiencing minor-to-moderate, transient and potentially-overlapping impairments, as may be brought about by the ageing process and (2) supporting collaboration between people by reasoning about the consequences, from different users perspectives, of the adaptations they may require. A theoretical basis for describing these problems and a reasoning process for the semi-automatic application of adaptations is developed. Impairments caused by the environment in which a device is being used are considered. Adaptations are drawn from other research and industry artefacts. Mechanical testing is carried out on key areas of the reasoning process, demonstrating fitness for purpose. Several fundamental techniques to extend the reasoning process in order to take temporal factors (such as fluctuating user and device capabilities) into account are broadly described. These are proposed to be feasible, though inherently bring compromises (which are defined) in interaction stability and the needs of different actors (user, device, target level of accessibility). This technical work forms the basis of the contribution of one work-package of the Sustaining ICT use to promote autonomy (Sus-IT) project, under the New Dynamics of Ageing (NDA) programme of research in the UK. Test designs for larger-scale assessment of the system with real-world participants are given. The wider Sus-IT project provides social motivations and informed design decisions for this work and is carrying out longitudinal acceptance testing of the processes developed here