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While Software Engineering (SE) is primarily concerned with developing software products, Human Computer Interaction (HCI) is primarily concerned with the User Interface (UI) of these products striving for its quality, such as usability. Therefore, integrating both disciplines is key to develop usable software products. The effort to align activities from both domains started since HCI emerged as a discipline in the early 80s. Yet, such an alignment proved to be a hard goal to reach. Consequently, valuable HCI contributions and models are not considered by the software industry as they could be. In order to address the aforementioned challenge, this thesis analyzes different approaches to align HCI and SE in order to identify the root cause that is hampering the alignment effort. It follows a Root Cause Analysis methodology that helps, not only to identify the root cause, but also to propose a solution for it. This thesis suggests the linguistic perspective as an alternative to common UI development which does not foster creating a concrete UI during the early phases (such as analysis), while the linguistic perspective enables this possibility by materializing linguistic levels (i.e., goal, pragmatic, semantic, syntactical, lexical, alphabetical) that are already analyzed into a partial yet concrete UI. This change of perspective implies several changes to other HCI concepts which are discussed in this thesis: how a user interface can be developed from a linguistic perspective. For this purpose, this thesis proposes a linguistic UI development language (the Prism Programming Language). Moreover, it explores modeling approaches from the linguistic perspective, proposes a linguistic modeling framework and instantiates a graphical UI linguistic model from it. Furthermore, it develops the Prism Development Life Cycle (Prism-DLC) that can be instantiated in different software DLCs, such as agile methods. The Prism-DLC allows aligning SE and HCI in the right way to develo, (FSA - Sciences de l'ingénieur) -- UCL, 2016

A User Interface Description Language (UIDL) consists of a specification language that describes various aspects of a user interface under development [1]. Fundamentally, accessibility means that peoples with different disabilities can use a specific product. Particularly, in order to be accessible, a user interface must be perceivable, operable, and understandable for users, including those with disabilities or functional limitations as visual, auditory, physical, speech, cognitive, and neurological disabilities. User interfaces accessibility can be approached through usability. International organization for standardization (ISO) 9241-11 defines usability as the extent to which a product can be used by the specified users to achieve specified goals effectively, efficiency, and with satisfaction in a specified context of use [2]. Accessibility focuses on including people with disabilities as the specified users and a wide range of situations, including assistive technologies, as the specified context of use

Information Systems user interface generation from declarative models has been the focus of numerous and various approaches in the human computer interaction community. Typically, the different approaches use the different models based on their singular aspects. This thesis proposes a new process that combines the task, domain, and user models taken together to drive the information system user interface design and code behind generation. We propose a framework, i.e., a methodological process, a meta-model and a software prototype called DB-USE., (IAG 3) -- UCL, 2010

Designing and evaluating the usability of electronic commerce web sites is a rather complex activity that involves design knowledge. One particular form of this knowledge consists of design guidelines, which can ensure some minimal form of usability. However, these guidelines are widespread throughout the literature and expressed in various forms. This paper attempts to provide a framework for structuring guidelines, exemplifying it for electronic commerce web sites.