A detailed walkthrough of the engineering process for the development of an accessible search engine tool. Contributions include a comprehensive literature review, assumptions, requirements, high-level design, implementation, and usability evaluations. / The internet has become useful in just about anything we do. Unfortunately, as vision degrades so does our ability to perceive the web. The design of Graphical User Interfaces (GUIs) has become overwhelmingly common and is meant to be coupled with a screen and mouse. The interface introduced in this thesis was developed to avoid graphically driven design and create a novel Search Engine interface intended for blind and low vision users. This is achieved by minimizing the total concern of the user (the userspace) to a handful of options and a predetermined structure to the Search Engine Results Page (SERP). This thesis describes the entire development process starting from the literature review and including implementation, evaluation, and future work. / Thesis / Master of Applied Science (MASc)

El objetivo principal perseguido en esta tesis consiste en proponer un catálogo de refactorings para mejorar aspectos como usabilidad, eficiencia y eficacia de los procesos de negocio de las aplicaciones web. Mientras otras publicaciones identifican posibilidades de mejorías en los modelos de las aplicaciones web, esta tesis se focaliza en identificar problemas relacionados exclusivamente con la ejecución de los procesos de negocio y sugerir cambios para optimizar la experiencia del usuario mientras este navega por los procesos embebidos en las aplicaciones. / With time, web applications changed and evolved from simple websites to complex applications that allow users to perform a wide variety of tasks and operations online. All this progress is possible due to the fact that, nowadays, web applications support Business Processes. The integration of business processes and the associated increase in complexity of web applications generally lead to underestimate its usability which affects directly the users who have to execute these business processes daily. Focused in improve the execution and the usability of business processes, a catalog of refactorings was created with suggestions of changes classified by the affected web application model. The proposed refactorings aim to improve the user experience while executing these business processes embeded in most of web application and consequently its usability.