Cuadernos de Ingeniería

Privacy coins y gestión de historias clínicas: revisión sistemática de la literatura

2025-09-30T09:27:51-03:00

The digitalization of medical records is key to optimizing the efficiency and quality of healthcare, although the protection of patient data remains a major challenge. In this regard, Blockchain technology has emerged as a promising alternative to improve security in the healthcare field. However, its traceable nature can compromise patient privacy, especially in the management of electronic medical records. To address this challenge, privacy coins, which employ advanced cryptographic techniques such as ring signatures and zero-knowledge proofs, could ensure anonymity and data protection. This study analyzes whether these technologies are being used to improve medical record management in blockchain-based environments, evaluating their effectiveness in protecting privacy, their interoperability, and their technical and operational feasibility. Through a systematic review, research questions and search and selection criteria for articles were established, obtaining 72 studies, of which 24 were included in the analysis. While no direct implementations of privacy coins in electronic medical records were identified, models were found that combine blockchain with decentralized technologies to strengthen the privacy of medical data. These coins allow for anonymization and granular access control, offering significant advantages for the protection of information. In addition, their integration with technologies such as IoMT, FHIR and smart contracts could reinforce security, although it is essential to balance protection and usability for their application in the health sector.

Integration of the Transactional Outbox Pattern in SAGA-Based Microservices Architectures.

2025-12-01T10:16:44-03:00

The research project "Development of a Management System for an FTTH System" conducted by UNLaM students, under the premise of addressing real-world design problems in a controlled environment, forced the working group to reconsider their chosen design options.

This article presents a proposed architectural redesign of an FTTH (Fiber to the Home) management system. The transition from a synchronous API Gateway-based architecture to an event-based architecture with asynchronous communication is analyzed. The solution relies on the combined application of the SAGA pattern and the Transactional Outbox Pattern (TOP), with the goal of ensuring consistency and resilience in distributed transactions. Benefits, challenges, and recommendations for its effective implementation are discussed.

A novel low implementation-cost spectrum sensing technique for cognitive radio systems

2026-03-17T08:45:13-03:00

One of the greatest current challenges in telecommunications is the excessive exploitation of the radio spectrum, and the migration of new services to higher frequencies is becoming a problem since this implies a higher cost for the development of electronic equipment and the effective range of these decreases. This makes it essential that new equipment has the capacity for efficient and collaborative use and reuse of the radio spectrum. Spectral sensing is therefore of vital importance in new electronic devices, along with the possibility of local spectrum sensing, spectrum management, frequency reuse, distributed communication capabilities in the framework of cognitive radio systems, etc. The present work proposes a variant for the cross-correlation estimator in a cyclostationary detector to be implemented in a spectral detector and its comparison with other classical estimators.