Abstract-This paper presents the results of a systematic review of existing literature on the integration of agile software development with user-centered design approaches. It shows that a common process model underlies such approaches and discusses which artifacts are used to support the collaboration between designers and developers.

Despite the increasing popularity of systematic literature reviews in Software Engineering, several researchers still indicate it as a costly and challenging process. Aiming at alleviating this costly process, we propose an iterative method to support the process of building the search string for a systematic review. This method uses Visual Text Mining techniques to support the researcher by suggesting new terms for the string. In order to do so, the method extracts relevant terms from studies selected by the researcher and displays them in a way that facilitate their visualization and supports building and refining the search string. In order to check the feasibility of this approach, we developed a tool that implements the proposed method. Interviews with researchers identified their difficulties in performing systematic reviews and captured their feedback with regards the use of the proposed method in a user study. The researchers indicated that this approach could be used to improve the process of building the search strings for systematic reviews. The study indicates that our approach can be used to facilitate the construction of the systematic literature review search string.

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The integration between agile methods and UCD has been addressed by several authors in recent years. However, a gap remains regarding how the practices have been described, lacking a standard that both designers and agile practitioners can understand and apply.This study aims to propose agile usability patterns based on the literature, with a focus on the User-Centered Design early stages. The goal of the proposed patterns is to facilitate the use of the best agile usability practices by identifying more clearly in which context the pattern can be applied, and what is the problem that each pattern solves, presenting examples.

With the rise of Extended Reality (XR) technologies, such as head mounted displays (HMD) for Virtual Reality (VR), Mixed Reality (MR), and Augmented Reality (AR), designers are presented with many unique challenges and opportunities when creating applications. Publications can be found from research and industry that offer insights and ideas surrounding user experience (UX) for XR applications. However, these publications often vary in format and content. Based on a thorough analysis of 68 different resources from research, industry, and 2D design, we present a set of eleven UX guidelines for designing XR applications. Our work serves as a reference to the literature for understanding what others have tried and discovered and provides an integrated set of guidelines. Furthermore, our guidelines offer guidance to a software developer to aid in the design of XR applications for HMD devices.

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Despite having different underlying concepts, agile methods and User-Centered Design aim ultimately at producing high quality software. Aiming at providing better understanding on how usability evaluation is addressed within agile environments, we carried out multiple-case studies in two large IT companies. On the one hand, our studies corroborate the literature with regards to the execution of usability inspection evaluations on lightweight prototypes, taking advantage of the iterative nature of Agile. On the other hand, we observed contrary to the literature that this iterative nature of Agile has not facilitated the execution of user testing sessions. Furthermore, we noticed that it is extremely difficult to perform traditional user testing sessions due to the tight schedules inherent to Agile. Finally, we describe a set of practices that can help improve specific artifacts in different stages of an agile process in order to successfully evaluate software product usability.

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