Logo des Repositoriums

Auflistung nach Autor:in "Sousa, Pedro"

1 - 4 von 4
  • Zeitschriftenartikel
    Decentralized Business Process Control using Blockchain
    (Enterprise Modelling and Information Systems Architectures (EMISAJ) – International Journal of Conceptual Modeling: Vol. 15, Nr. 15, 2020) Guerreiro, Sérgio Luís; Silva, Diogo; Rosado, Tiago; Vasconcelos, André; Correia, Miguel; Sousa, Pedro
    Many applications supported by blockchain technology are emerging in the industry. Blockchain can be used to enforce the correctness of business process execution and, consequently, increasing the trust among the stakeholders involved in complex business processes. Since few experiences in the area have been reported, more are needed to better understand the benefits and pitfalls of blockchain-based solutions for decentralized business process control. This paper is an experience report of two projects that enforce decentralized business process control using blockchain - a food supply chain and a car registration - using a Design Science Research Methodology approach. Each application follows a different business process design - DEMO and BPMN - leading to different implementations based on Hyperledger Fabric. The major lessons learned are related to the appropriateness of DEMO and BPMN as business process modelling languages in the context of blockchain applications.
  • Zeitschriftenartikel
    Enterprise Architecture Analysis - An Information System Evaluation Approach
    (Enterprise Modelling and Information Systems Architectures - An International Journal: Vol. 3, Nr. 2, 2008) Vasconcelos, André; Sousa, Pedro; Tribolet, José
    The definition of an Enterprise Architecture (EA) has a central role in implementing Information Systems (ISs) that proactively contribute to business and Information Technology (IT) alignment. In this paper, using a set of key concepts for the Information System Architecture (ISA) specification (formalized in a UML profile), 16 metrics are proposed for ISA suitability assessment considering a set of required quality characteristics. This paper also proposes an exploratory approach for the ISA definition process. This approach combines EA primitives and metrics in order to support multi-criteria ISA selection. The proposals presented in this research are applied in the definition, evaluation and comparing of different architectural options for the new Portuguese National identification document project (the Citizen Card project).
  • Zeitschriftenartikel
    Maintenance of Enterprise Architecture Models
    (Business & Information Systems Engineering: Vol. 63, No. 2, 2021) Silva, Nuno; Sousa, Pedro; Mira da Silva, Miguel
    Enterprise architecture (EA) models are tools of analysis, communication, and support towards enterprise transformation. These models need a suitable maintenance process to support comprehensive knowledge of the enterprise’s structure and dynamics. This study aims to identify and discuss the existing approaches to EA model maintenance published in the scientific literature. A systematic literature review was employed as the research method. A keyword-based search in six databases identified a total of 4495 papers in which 31 primary studies were included. A total of nine categories of EA model maintenance approaches were identified from both information systems and enterprise engineering fields of research. The increasing amount of research in EA model maintenance suggests that the topic still presents opportunities for research contributions. This study also proposes future lines of research according to the results identified in the theoretical corpus.
  • Zeitschriftenartikel
    The Role of Enterprise Governance and Cartography in Enterprise Engineering
    (Enterprise Modelling and Information Systems Architectures - An International Journal: Vol. 9, Nr. 1, 2014) Tribolet, José; Sousa, Pedro; Caetano, Artur
    Enterprise artography is fundamental to govern the transformation processes of an organisation. The artefacts of enterprise cartography represent the structure and dynamics of an organisation from three temporal views: as-was (past), as- is (present), and to-be (future). These views are dynamically generated from a continuous process that collects operational data from an organisation. This paper defines a set of enterprise cartography principles and provides an account of its role in understanding the dynamics of an organisation. The principles are grounded on control theory and are defined as a realisation of the observer and modeller components of the feedback control loop found on dynamic systems. As a result, an organisation can be abstracted as a dynamic system where a network of actors collaborate and produce results that can be depicted using cartographic maps.