The modernization of public administration software systems increasingly adopts microservices architectures to achieve scalability, flexibility, and resilience. However, the complexity of distributed systems presents challenges in access authorization management. This case study presents the SIARE-Artefactos solution, designed to automate the registration and authorization of resources within Paraguay’s Integrated State Resource Management System (SIARE), leveraging OAuth 2.0 and Spring Boot Starter to ensure secure and efficient authorization processes that automate authorization, reducing configuration time from minutes to seconds, while its integration into CI/CD processes ensures consistency, minimizes errors, and enhances deployment reliability. SIARE-Artefactos has been implemented and used by public employees in Paraguay, allowing for validation with real actors. The validation of the proposal shows that the solution is replicable to other cases with similar challenges and resources and demonstrates significant improvements: a 60% reduction in configuration time and enhanced system reliability, highlighting its potential to transform large-scale public administration systems using modern DevOps practices and agile methodologies.

The state of the sidewalks in Asunción (Paraguay) is far from being optimal. There are many problems related to obstructions, necessary repairs, lack of ramps, unevenness of surface, among others. In addition, the Municipality of Asunción does not have automated mechanisms to know their updated status. In this work we propose SmartMoving, a mobile application that collects information on the state of the sidewalks, with the help of citizens, and recommends pedestrian paths with less obstacles. The application can be especially useful for people with reduced mobility, as well as for the Municipality of Asunción. This type of application is based on citizen participation, since it receive data from them, and therefore requires a particularly friendly user experience, adapted to users and their daily context. Therefore, the need for a participatory and user-centered design, as a basis for the development of the application. Therefore, in this article we present the user-centered design process that has been followed for the development of SmartMoving, involving users with reduced mobility.

A low average number of people per private vehicle and inappropriate road infrastructure results in heavy traffic that wastes space, time and money for the people involved. To optimize these resources, it is intended to promote carpooling between people who share the same destination, for example, colleagues at work or students at a university. This paper presents UCarpooling, a matching system for commuting between people of a same institution. UCarpooling is aimed at optimizing the number of passengers in vehicles during routine trips to and from work or study. The difference with respect to other similar proposals is that UCarpooling takes into account logistical details (place of departure, time of entry, etc.) and personal traits (if you smoke, what genres of music you listen to, etc.) as variables to calculate the percentage compatibility that different people have to carry out a carpool. A simulation of the use of UCarpooling in a university in Asunción, Paraguay, yields favorable data reaching the conclusion that its adoption is quite beneficial for the institution that adopts it, the people who use it, and the cities where it is adopted.

Due to the complexity of software systems and the high probabilities of new errors appearing in any stage of the software life cycle, techniques for quality verification are needed. Software testing is a widely used approach but, due to the costs involved in this process, development teams often debate its applicability in their projects. In the endeavor to reduce the complexity of this process, this document presents an approach for software development based in Test-Driven Development (TDD) supported by Model-Based Testing (MBT) tools to allow automatic test-case generation. Besides, a toolkit for the generation of unit and acceptance tests for Web applications is proposed.

Many Web applications have among their features the possibility of distributing their data and their business logic between the client and the server, also allowing an asynchronous communication between them. These features, originally associated with the arrival of Rich Internet Applications (RIA), remain particularly relevant and desirable. In the area of RIA, there are few proposals that simultaneously consider these features, adopt MDD (Model-Driven Development), and use implementation technologies based on scripting. In this work, we start from MoWebA, an MDD approach to web application development, and we extend it by defining a specific architecture model with RIA functionalities, supporting the previously mentioned features. We have defined the necessary metamodels and UML profiles, as well as transformation rules that allow you to generate code based on HTML5, Javascript, jQuery, jQuery Datatables and jQuery UI. The preliminary validation of the proposal shows positive evidences regarding the effectiveness, efficiency and satisfaction of the users with respect to the modeling and code generation processes of the proposal.

This study focuses on model-to-model transformations, as part of the Model-Driven Development (MDD) approach, for Rich Internet Applications (RIA). The main aim of this study is to identify fields that require further contributions, and/or research opportunities in the previously mentioned context. We applied mapping studies techniques, allowing a broader extent than reviews, by taking into consideration every paper related to our field of interest and not only those based on empirical studies. From an initial set of 80 papers, we selected 26 papers first, and another 3 papers were added later. Therefore, we considered 29 research papers. The performed analysis led to various considerations. Among the important ones, we can mention: there are many newly proposed methods, the scarcity of empirical work, the problem of the portability of platform independent model (PIM) and the low numbers of tools available for MDD.

Currently, a growing interest is being caused by mobile cloud applications. Improvements related to the portability of these applications among different platforms and different service providers are a critical need. Model Driven Development (MDD) constitutes one of the alternatives to address the portability problem. This work presents a systematic mapping study that analyzes different proposals that apply MDD to the development of mobile cloud applications and that, at the same time, consider the improvement of the portability of these applications. Even though we have identified just a few studies related to our subject of interest, the validation experiences that are presented in them, encourage the adoption of MDD to address the portability problem. However, further validation experiences that consider more complex cases in industrial environments will be required to justify the benefits of MDD in a substantial manner.

This study presents the Architecture Specific Model (ASM) defined by the MoWebA approach to improve the development of web applications for different architectures. MoWebA is a model-driven approach to web applications development. The article presents a general overview of MoWebA, including the methodological aspects related to its modeling and transformation processes, the process of defining the ASM, and an example of an ASM model. We finally present a preliminary validation experience and its main results. The experience was structured according to the proposal of Runeson et al. for case studies.