Banca de DEFESA: STEFANO MOMO LOSS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : STEFANO MOMO LOSS
DATE: 29/05/2025
TIME: 14:00
LOCAL: Sala Google Meet - meet.google.com/vwk-defn-tsv
TITLE:

INHABS: INteroperable Hierarchical Architecture using Blockchain for Smart Cities

KEY WORDS:

Blockchain. Smart Cities. Scalability. System of Systems

PAGES: 148
BIG AREA: Ciências Exatas e da Terra
AREA: Ciência da Computação
SUBÁREA: Metodologia e Técnicas da Computação
SPECIALTY: Engenharia de Software
SUMMARY:

Background: Urbanization is rapidly increasing worldwide, necessitating the development
of innovative solutions for managing smart city systems. These systems are typically
heterogeneous and independently managed, often leading to interoperability challenges
across different administrative levels, including local, regional, and national domains.
Current approaches, such as middleware or ad hoc integrations, fail to ensure scalability,
reliability, and unified data exchange. Blockchain technology has emerged as a potential
solution for enabling trusted and decentralized interoperability, yet its full potential in
achieving unified system integration remains underexplored.
Objective: This thesis aims to design, implement, and evaluate a hierarchical blockchain-
based architecture: INHABS (Interoperable Hierarchical Architecture using Blockchain for
Smart Cities), to enable reliable, secure, and scalable system interoperability for smart
cities. The study addresses gaps in existing solutions by focusing on multi-level integration
and creating new functionalities arising from interoperation across diverse domains.
Method: Using the Design Science Research (DSR) methodology, the study combines
systematic literature reviews, case studies, and iterative artifact development. Initial
approaches include blockchain-based microservices and middleware for system integration.
These were evaluated to identify limitations, which informed the development of a novel
hierarchical blockchain architecture capable of supporting multi-level governance in smart
cities. Experimental validation was conducted using performance metrics such as scalability,
latency, and throughput.
Results: The research developed the INHABS architecture, which successfully integrated
smart city systems across hierarchical levels. The framework ensures secure data exchange,
reliable interoperability, and scalability, meeting unified system integration requirements.
Case studies involving integrating computer-aided dispatch (CAD) systems and global
vaccination management demonstrated its effectiveness in optimizing resources, enhancing
urban service delivery, and securely sharing sensitive public health data.
Conclusions: The INHABS architecture advances the state of the art in smart city
interoperability by providing a scalable and secure blockchain-based solution for multi-level
integration. The framework enables unified functionality across diverse systems, improving
urban service delivery and citizen quality of life by overcoming the limitations of existing
microservice and middleware solutions. Future research could expand the application of
this architecture to additional use cases and enhance its scalability for more complex urban
environments.

 

COMMITTEE MEMBERS:
Presidente - 1678918 - NELIO ALESSANDRO AZEVEDO CACHO
Interno - 2316877 - EVERTON RANIELLY DE SOUSA CAVALCANTE
Interna - 1213777 - THAIS VASCONCELOS BATISTA
Externo ao Programa - 2510306 - FREDERICO ARAUJO DA SILVA LOPES - UFRNExterno à Instituição - AVELINO FRANCISCO ZORZO - PUCRS
Externa à Instituição - ELISA YUMI NAKAGAWA - USP