Cookies Policy
The website need some cookies and similar means to function. If you permit us, we will use those means to collect data on your visits for aggregated statistics to improve our service. Find out More
Accept Reject
  • Menu
Publications

Publications by CESE

2024

Demand Driven Material Requirements Planning: Using the Buffer Status to Schedule Replenishment Orders

Authors
Fernandes, NO; Guedes, N; Thürer, M; Ferreira, LP; Avila, P; Carmo Silva, S;

Publication
INFORMATION SYSTEMS AND TECHNOLOGIES, VOL 1, WORLDCIST 2023

Abstract
Demand Driven Material Requirements Planning argues that production replenishment orders should be scheduled on the shop floor according to the buffers' on-hand inventory. However, the actual performance impact of this remains largely unknown. Using discrete event simulation, this study compares scheduling based on the on-hand inventory, with scheduling based on the inventory net flow position. Results of our study show that scheduling based on the former performs best, particularly when multiple production orders are simultaneously generated and progress independently on the shop floor. Our finds give hints that are important to both, industrial practice and software development for production planning and control.

2024

Analysis of the Impact of Automation on a Workstation at an Industrial Company Using Simulation

Authors
Costa, C; Ferreira, LP; Ávila, P; Ramos, AL;

Publication
Lecture Notes in Networks and Systems

Abstract
In everyday life, the production lines of companies are required to be flexible, rapidly adopting new processes and methods in order to ensure their competitiveness in the market. The main objective of this study was to analyze the impact of automation on a workstation at an industrial company which paints accessories. By means of simulation, one was able to identify several aspects that negatively affect the company’s overall capacity, namely reduced productivity and long cycle times. The digital tools developed through Visual Basic for Applications constituted the starting point for the automation of several repetitive and bureaucratic tasks which support decision-making, initiating the process of Digital Transformation at the organization. In economic terms, this improvement in the workplace can potentially reduce costs in the order of thousands of euros annually, in addition to increasing productivity thus improving the company’s general performance. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

2024

Configurations and features of demand responsive transports

Authors
Dauer A.; Dias T.G.; de Sousa J.P.; de Athayde Prata B.;

Publication
Transportation Research Procedia

Abstract
The concept of Demand Responsive Transport (DRT) has been around for more than 40 years and is a promising mobility alternative when traditional public transport proves inadequate in terms of its effectiveness or efficiency, as is the case of low-density areas. DRT systems have a wide range of operational configurations, being highly adaptable to different contexts and environments. Therefore, the design of a DRT mobility solution can become a quite complex and challenging problem. To assist in the design of DRTs, this paper aims to present a comprehensive classification of DRT features and to identify some common design choices in different operational scenarios. The proposed classification is based on a review of reports from available literature and previous European DRT projects. In addition, an analysis of the most usual configurations for different purposes and scenarios is presented. In this research, the operational, demand, and administrative characteristics of DRTs are addressed. Demand aspects encompass features that directly influence trip demand, such as service areas, target passengers, and hours of operation. Operational features include characteristics that will affect daily operations as the type of stops, frequency of the operation, booking methodology, vehicle route, pick-up and drop-off locations, and the vehicle type used. Administrative characteristics address the relationship between consumers and the system, such as the purpose of the system, fares, visual identification of stops, and booking methods. Regarding the usual design choices, our survey shows that rural DRTs are primarily oriented to serve populations in need in low-density areas and to complement existing PT gaps, while urban DRTs are mainly viewed as a mobility alternative to fill existing PT gaps. Defining design patterns for peri-urban and multi-area DRTs presents challenges due to their transitional nature, thus combining attributes of both rural and urban systems.

2024

Factors Influencing Sustainable Poverty Reduction: A Systematic Review of the Literature with a Microfinance Perspective

Authors
Fonseca, S; Moreira, A; Mota, J;

Publication
Journal of Risk and Financial Management

Abstract
This research examined factors that help microfinance achieve sustained poverty reduction based on a systematic literature review (SLR). A search was conducted on the SCOPUS database up to December 2023. After analyzing hundreds of documents, a subset of 30 articles was subject to in-depth analysis, exploring factors and corresponding measurement indicators for sustainable poverty reduction in microfinance contexts. This article emphasizes that sustained poverty reduction is a gradual process requiring ongoing efforts from both Microfinance Institutions (MFIs) and governments. Two key success factors are empowering borrowers and ensuring the microfinance programs themselves are profitable. When implemented in an integrated and coordinated manner, these factors can empower individuals to escape poverty by fostering self-employment and income generation, ultimately reducing dependence on external support. Additionally, the study highlights the role of personality traits in influencing long-term entrepreneurial success. The findings provide valuable tools for MFIs and policymakers. MFIs gain a practical framework to guide their interventions towards sustained poverty reduction. Policymakers can leverage the identified factors and indicators when designing and implementing microfinance policies with a long-term focus on poverty alleviation. This study breaks new ground by presenting an operational framework that categorizes and integrates two critical factor groups: empowerment and beneficiary profitability. Furthermore, it links these factors to corresponding measurement indicators within a unified framework, enabling a more holistic assessment of poverty reduction efforts. © 2024 by the authors.

2024

Internationalization Strategies

Authors
Moreira, AC; Simões, A; Sousa, AS; Martins, JG;

Publication
Advances in Business Strategy and Competitive Advantage - Entrepreneurial Strategies for the Internationalization and Digitalization of SMEs

Abstract
This chapter explores the internationalization path of ALPHA, a family-owned, medium-sized Portuguese company. The analysis reveals a two-stage process. Initially, ALPHA's gradual market entry aligns with the Uppsala model, prioritizing geographically close markets and leveraging accumulated experience. However, later stages demonstrate network-based theory influences. While lacking formal networks, ALPHA prioritizes strong B2B relationships with large international clients, mirroring network bridges for market access. The case highlights the importance of trust-based B2B relationships for success. ALPHA leverages these partnerships to gain market knowledge and access new opportunities. Exporting plays a vital role, keeping ALPHA updated on technological trends and fostering innovation through diverse client projects. The company prioritizes a pragmatic approach focused on strong client relationships and win-win partnerships, emphasizing trust as a key resource. While the RBV perspective highlights investment in internal resources, reliance on intermediaries introduces limitations.

2024

Is a Good Story Enough? A Critical Analysis of Storyteller Roles in Tourism

Authors
Moreira, AC; da Costa, RA; de Sousa, MJN;

Publication
JOURNAL OF HOSPITALITY & TOURISM RESEARCH

Abstract
As storytelling influences consumer attitudes and opinions, conditioning the tourist experience by appealing to the imagination, this paper reviews the literature covering the analysis of 66 papers that focus on the storytelling of the visitor/tourist as the main subject. The article is divided into four main themes: (a) storytelling as a tool to attract tourists; (b) the role of the storyteller; (c) the tourist as a storyteller; and (d) what makes a good story. The Hoshin Kanri Matrix was used to showcase each of the main themes. Although storytelling has been widely used to attract tourists, it is crucial that tourist-based storytelling can be a credible substitute for destination-based storytelling, as empathy, authenticity and the emotional attachment of tourists as storytellers play an important role as good stories, transforming and co-creating their experiences that emerge from the interaction of tourists, residents, and intermediaries.

  • 10
  • 212