Marcelo Santiago Sousa, Pedro Paglione, Roberto Gil Annes Silva, Flavio Luiz Cardoso-Ribeiro and Sebastião Simões Cunha
The purpose of this paper is to present a mathematical model of one very flexible transport category airplane whose structural dynamics was modeled with the strain-based…
Abstract
Purpose
The purpose of this paper is to present a mathematical model of one very flexible transport category airplane whose structural dynamics was modeled with the strain-based formulation. This model can be used for the analysis of couplings between the flight dynamics and structural dynamics.
Design/methodology/approach
The model was developed with the use of Hamiltonian mechanics and strain-based formulation. Nonlinear flight dynamics, nonlinear structural dynamics and inertial couplings are considered.
Findings
The mathematical model allows the analysis of effects of high structural deformations on airplane flight dynamics.
Research limitations/implications
The mathematical model has more than 60 degrees of freedom. The computational burden is too high, if compared to the traditional rigid body flight dynamics simulations.
Practical implications
The mathematical model presented in this work allows a detailed analysis of the couplings between flight dynamics and structural dynamics in very flexible airplanes. The better comprehension of these couplings will contribute to the development of flexible airplanes.
Originality/value
This work presents the application of nonlinear flight dynamics-nonlinear structural dynamics-strain-based formulation (NFNS_s) methodology to model the flight dynamics of one very flexible transport category airplane. This paper addresses also the way as the analysis of results obtained in nonlinear simulations can be made. Comparisons of the NFNS_s and nonlinear flight dynamics-linear structural dynamics methodologies are presented in this work.
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Paulo Renato de Sousa, José Márcio de Castro, Claudia Fabiana Gohr and Marcelo Werneck Barbosa
This study aims to assess suppliers’ learning from knowledge transfers with a global truck manufacturer, considering both source and supplier capacity, and the cultural proximity…
Abstract
Purpose
This study aims to assess suppliers’ learning from knowledge transfers with a global truck manufacturer, considering both source and supplier capacity, and the cultural proximity between the parties.
Design/methodology/approach
A case study was conducted between two factories, one in Brazil and one in Germany. This study adopted a mixed-method sequential explanatory approach, which involves a quantitative phase followed by a qualitative one to provide a better understanding of the studied phenomenon. Quantitative data were collected from the automaker’s suppliers in both countries and analyzed using factor and inferential analyses. Qualitative data were obtained from the automaker’s purchasing executives, and from the company’s suppliers in both countries. Content analysis was used to analyze data.
Findings
Results suggest that both the source’s disseminative capacity and suppliers’ absorptive capacity had a positive effect on suppliers’ learning during knowledge transfers. The study also found out that cultural proximity among parties positively moderates the relationship between suppliers’ absorptive capacity and their learning. However, cultural proximity does not moderate the relationship between a source’s disseminative capacity and supplier learning.
Practical implications
This study’s findings are important to foster knowledge transfers by developing absorptive and disseminative capabilities in the automakers industry, in which the implementation of interorganizational learning is quite challenging due to the large number of strategic providers.
Originality/value
This study contributes to theoretical and conceptual consolidation of knowledge transfer, which includes cultural proximity among parties and the source’s and supplier’s disseminative and absorptive capacities, respectively. This study constructs and validates a model of knowledge transfer using a large automaker with a worldwide presence.
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Luis Otero González, Raquel Esther Querentes Hermida, Pablo Durán Santomil and Celia López Penabad
The primary objective of this study is to analyze the performance and risk characteristics of portfolios composed of Spanish family businesses (FBs) when sustainability and…
Abstract
Purpose
The primary objective of this study is to analyze the performance and risk characteristics of portfolios composed of Spanish family businesses (FBs) when sustainability and quality factors are taken into account. By comparing different portfolio compositions against a benchmark, the study aims to provide insights into the impact of these factors on portfolio performance.
Design/methodology/approach
This study employs an empirical approach to evaluate the performance and risk of portfolios consisting of Spanish family businesses (FBs) by incorporating sustainability and quality factors. It compares the results of various portfolios against a benchmark, utilizing GARCH models and the extended six-factor model of Fama and French for the period 2018–2023.
Findings
The findings reveal that investing in Spanish family businesses (FBs) yields higher returns compared to the index, with portfolios incorporating quality factors demonstrating superior performance. However, the inclusion of sustainability factors negatively affects portfolio performance. These results highlight the significance of considering sustainability and quality factors in portfolio construction and investment decisions.
Originality/value
This study contributes to the existing literature by examining the performance and risk implications of incorporating sustainability and quality factors into portfolios of family businesses. The findings offer valuable insights for investors and managers interested in constructing portfolios or developing financial products that balance risk and return effectively.
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Manuel Tironi, Katherine Campos-Knothe, Valentina Acuña, Enzo Isola, Cristóbal Bonelli, Marcelo Gonzalez Galvez, Sarah Kelly, Leila Juzam, Francisco Molina, Andrés Pereira Covarrubias, Ricardo Rivas, Beltrán Undurraga and Sofía Valdivieso
Based on the research, the authors identify how four key concepts in disaster studies—agency, local scale, memory and vulnerability—are interrupted, and how these interruptions…
Abstract
Purpose
Based on the research, the authors identify how four key concepts in disaster studies—agency, local scale, memory and vulnerability—are interrupted, and how these interruptions offer new perspectives for doing disaster research from and for the South.
Design/methodology/approach
Meta-analysis of case studies and revision of past and current collaborations of authors with communities across Chile.
Findings
The findings suggest that agency, local scale, memory and vulnerability, as fundamental concepts for disaster risk reduction (DRR) theory and practice, need to allow for ambivalences, ironies, granularization and further materializations. The authors identify these characteristics as the conditions that emerge when doing disaster research from within the disaster itself, perhaps the critical condition of what is usually known as the South.
Originality/value
The authors contribute to a reflexive assessment of fundamental concepts for critical disaster studies. The authors offer research-based and empirically rich redefinitions of these concepts. The authors also offer a novel understanding of the political and epistemological conditions of the “South” as both a geography and a project.
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Samuel Façanha Câmara, Francisco Roberto Pinto, Felipe Roberto da Silva, Paulo Torres Junior and Marcelo Oliveira Soares
This study aimed to identify the potential for economic activities related to the ocean economy in Brazil to become blue economy (BE) activities, in which the concept of the…
Abstract
Purpose
This study aimed to identify the potential for economic activities related to the ocean economy in Brazil to become blue economy (BE) activities, in which the concept of the Sustainable Development Goals (SDGs) is central.
Design/methodology/approach
To achieve the aim, the authors collected information on the SDGs and estimated data from the ocean economy sectors for the 256 Brazilian coastal cities. The authors predicted the indices for potential development of territories and sectors in the BE using two parameters: employed persons (EP) and sectoral added value (AV).
Findings
The results show that the capitals of coastal states present the highest potential indices for the BE, especially Rio de Janeiro, which accounted for 83.3% of sectoral added value in the Brazilian ocean economy with potential for sustainable development and generated 107,800 active formal jobs (26.9% of the country's total). In addition, restaurants, hotels and similar establishments are, on the Brazilian coast, the most frequent on the coastal zone and have the highest potential for BE activities.
Originality/value
Regarding its contributions, this research innovates by developing an indicator that can help stakeholders understand the similarities and differences between cities and regions, whether through a social, economic, or environmental lens. Therefore, by following this methodological path for measuring the BE, viewing the distinct patterns of sustainable development by area is possible, thereby supporting action plans for the fulfillment of the 2030 Agenda and the implementation of a marine spatial planning process for the country in the context of the Ocean Decade (2021–2030).
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/IJSE-02-2023-0112