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Article
Publication date: 17 August 2012

Jorge Palma Carrasco, José Maria Andrade Barbosa, Antonio Almeida Silva and Marcos Antonio da Silva Irmão

The purpose of this paper is to present a numerical simulation of the hydrogen atomic effect on the steels fracture toughness, as well as on crack propagation using…

Abstract

Purpose

The purpose of this paper is to present a numerical simulation of the hydrogen atomic effect on the steels fracture toughness, as well as on crack propagation using fracture mechanics and continuous damage mechanics models.

Design/methodology/approach

The simulation was performed in an idealized elastic specimen with an edge crack loaded in the tensile opening mode, in a plane strain state. In order to simulate the effect of hydrogen in the steel, the stress intensity factor ahead of the crack tip in the hydrogenated material was obtained. The damage model was applied to simulate the growth and crack propagation being considered only two damage components: a mechanical damage produced by a static load and a non‐mechanical damage produced by the hydrogen.

Findings

The simulation results showed that the changes in the stress field at the crack tip and the reduction in the time of growth and crack propagation due to hydrogen effect occur. These results showed a good correlation and consistency with macroscopic observations, providing a better understanding of the hydrogen embrittlement phenomenon in steels.

Originality/value

The paper attempts to link the concepts of the continuous damage and fracture mechanics to achieve a better approach in the representation of the physical phenomenon studied, in order to obtain a more accurate simulation of the processes involved.

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Book part
Publication date: 23 March 2017

Barbara de Lima Voss, David Bernard Carter and Bruno Meirelles Salotti

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of…

Abstract

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in the construction of hegemonies in SEA research in Brazil. In particular, we examine the role of hegemony in relation to the co-option of SEA literature and sustainability in the Brazilian context by the logic of development for economic growth in emerging economies. The methodological approach adopts a post-structural perspective that reflects Laclau and Mouffe’s discourse theory. The study employs a hermeneutical, rhetorical approach to understand and classify 352 Brazilian research articles on SEA. We employ Brown and Fraser’s (2006) categorizations of SEA literature to help in our analysis: the business case, the stakeholder–accountability approach, and the critical case. We argue that the business case is prominent in Brazilian studies. Second-stage analysis suggests that the major themes under discussion include measurement, consulting, and descriptive approach. We argue that these themes illustrate the degree of influence of the hegemonic politics relevant to emerging economics, as these themes predominantly concern economic growth and a capitalist context. This paper discusses trends and practices in the Brazilian literature on SEA and argues that the focus means that SEA avoids critical debates of the role of capitalist logics in an emerging economy concerning sustainability. We urge the Brazilian academy to understand the implications of its reifying agenda and engage, counter-hegemonically, in a social and political agenda beyond the hegemonic support of a particular set of capitalist interests.

Details

Advances in Environmental Accounting & Management: Social and Environmental Accounting in Brazil
Type: Book
ISBN: 978-1-78635-376-4

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Article
Publication date: 6 November 2017

Vitor da Mata Quintella, Antônio Francisco de Almeida da Silva Jr, Jose Ricardo Uchoa Cavalcanti Almeida and Marcelo Embiruçu

The purpose of this paper is to identify, measure and optimise financial risk and its effect on returns from innovation projects on an accrual basis and on a cash basis in…

Abstract

Purpose

The purpose of this paper is to identify, measure and optimise financial risk and its effect on returns from innovation projects on an accrual basis and on a cash basis in a commodity industry.

Design/methodology/approach

A hypothetical case study, based on a real case, of a petrochemical commodity industry in Brazil was analysed with commodities pricing rules based on actual contracts. Earnings at risk (EaR) and cash flow at risk (CFaR) measures were applied, as well as a metric proposed in this paper called cash balance at risk (CBaR).

Findings

The paper demonstrates that financial risk measurement and optimisation are important issues in the decision-making process in the petrochemical industry. EaR, CFaR and CBaR measures are helpful when used alongside standard procedures of project evaluation. The findings also show that innovative technologies, in certain conditions, may act as “natural hedging”. It was found that the time delay between revenues and expenses leads to financial risk exposure to changes in prices and foreign exchange rates. Projects can use financing and hedging to boost their results.

Originality/value

An innovative project was compared with an expansion project in a petrochemical industry. A model for petrochemical commodities contract pricing was added in an analysis that included financing and hedging. The findings in this paper suggest that it is important to consider financial risk measures in project evaluation.

Objetivo

O objetivo deste trabalho é identificar, medir e otimizar o risco financeiro e seus efeitos sobre os resultados de projetos com inovação, tanto na perspectiva do regime contábil quanto do regime de caixa, em uma indústria de commodities.

Abordagem

Um estudo de caso hipotético, baseado em um caso real de uma indústria petroquímica brasileira, foi analisado com regras de precificação de commodities baseados em contratos reais. As métricas Earnings at Risk (EaR) e Cash Flow at Risk (CFaR) foram utilizadas, assim como uma métrica proposta neste trabalho, denominada Cash Balance at Risk (CBaR).

Resultados

Este artigo demonstrou que a mensuração e otimização do risco financeiro são questões importantes no processo de tomada de decisão em uma indústria petroquímica. As medidas EaR, CFaR e CBaR se apresentaram como contribuições ao processo padrão de avaliação de projetos. Os resultados também demonstraram que inovações tecnológicas, em certas condições, podem funcionar como um “hedge natural”. Foi verificado que descasamentos temporais entre recebimentos e despesas geram uma exposição financeira a oscilações em preços e em valores de moedas estrangeiras. Financiamento e hedge podem ser utilizados em conjunto para aprimorar resultados de projetos.

Originalidade/valor

Um projeto com inovação foi comparado com um projeto de expansão em uma indústria petroquímica. Foi realizada uma analise de risco que agrega ao financiamento e ao hedge o uso de contratos de precificação de commodities. Os resultados desse projeto demonstram que é importante considerar medidas de risco financeiro nas avaliações de projetos.

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Article
Publication date: 6 August 2020

Antonio Francisco de Almeida da Silva Junior

This work presents a model of a two-period economy to discuss the link between the precautionary motivation for holding international reserves and the country's monetary…

Abstract

Purpose

This work presents a model of a two-period economy to discuss the link between the precautionary motivation for holding international reserves and the country's monetary policy concerns due to a crisis.

Design/methodology/approach

There are two possible states of nature in the second period of the economy: a normal state and a crisis state. These states of nature represent uncertainty to the policy maker and he can insure against a crisis. The household has a constant-elasticity-of-substitution (CES) utility function, where utility depends on consumption and money.

Findings

By allowing money in the utility function and in the household financial constraint and considering that the objective of the central bank is to smooth inflation, it is concluded that monetary policy plays a role in the precautionary motivation of holding international reserves.

Practical implications

The model can be used to calculate optimal reserves holdings in its complete or even in its simplified version. Furthermore, it is possible to evaluate the impact of the intra-temporal substitution elasticity between consumption and real money in the decision of accumulating international reserves.

Originality/value

Higher intra-temporal substitution elasticities implies in more insurance via international reserves, and this discussion is not found in the existent literature on international reserves.

Details

International Journal of Emerging Markets, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1746-8809

Keywords

Content available
Article
Publication date: 21 January 2019

Flavia Cristina Silva, Fabio Ytoshi Shibao, Isak Kruglianskas, José Carlos Barbieri and Paulo Antonio Almeida Sinisgalli

In total, 19 practices of circular economy divided into three groups, internal environmental management, ecological design and investment recovery were studied in a local…

Abstract

Purpose

In total, 19 practices of circular economy divided into three groups, internal environmental management, ecological design and investment recovery were studied in a local network composed of small companies and individual entrepreneurs related to common product and by-product flows. The paper aims to discuss these issues.

Design/methodology/approach

This research presents an applied nature, is characterized as exploratory and adopted the case study as a technical procedure using sources and methods of data collection. The primary data were collected through direct observation of the processes and semi-structured interviews with managers and owners.

Findings

The most widespread practices are related to product design. However, in most cases, the implementation was punctual and did not present continuous and corresponding actions, which highlights the embryonic contours of European Commission (EC) in the observed network. The practices from the management category were less observed, which revels the environmental variable is not included in the strategic business planning.

Research limitations/implications

The research documents the application of CE practices in a local network and brings this current paradigm shift to the Brazilian context.

Practical implications

To overcome barriers to the implementation of EC practices, it is suggested to restructure commercial relations, to formulate public policies and to develop infrastructures that facilitate the materiality of flows and the market.

Social implications

The study highlights the need of public policies that promotes cross-sectoral cooperation in accordance with NSWP objectives.

Originality/value

Despite the focus on EC implemented practices this study offers a framework of the research routes on the main barriers and suggests actions to overcome the challenges in the transition from the economy to the circular model.

Details

Revista de Gestão, vol. 26 no. 1
Type: Research Article
ISSN: 2177-8736

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Article
Publication date: 10 December 2018

Nuno Antonio, Ana Maria de Almeida, Luís Nunes, Fernando Batista and Ricardo Ribeiro

This paper aims to develop a model to predict online review ratings from multiple sources, which can be used to detect fraudulent reviews and create proprietary rating…

Abstract

Purpose

This paper aims to develop a model to predict online review ratings from multiple sources, which can be used to detect fraudulent reviews and create proprietary rating indexes, or which can be used as a measure of selection in recommender systems.

Design/methodology/approach

This study applies machine learning and natural language processing approaches to combine features derived from the qualitative component of a review with the corresponding quantitative component and, therefore, generate a richer review rating.

Findings

Experiments were performed over a collection of hotel online reviews – written in English, Spanish and Portuguese – which shows a significant improvement over the previously reported results, and it not only demonstrates the scientific value of the approach but also strengthens the value of review prediction applications in the business environment.

Originality/value

This study shows the importance of building predictive models for revenue management and the application of the index generated by the model. It also demonstrates that, although difficult and challenging, it is possible to achieve valuable results in the application of text analysis across multiple languages.

Details

International Journal of Contemporary Hospitality Management, vol. 30 no. 12
Type: Research Article
ISSN: 0959-6119

Keywords

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Book part
Publication date: 3 September 2019

Mariana Mortágua

This chapter explores the origins, development, and organization of the main Portuguese capitalist groups throughout the fascist dictatorship, the Carnation Revolution…

Abstract

This chapter explores the origins, development, and organization of the main Portuguese capitalist groups throughout the fascist dictatorship, the Carnation Revolution, and the neoliberal European integration until the onset of the financial crisis of 2008. The Portuguese experience confirms that, far from the usual neoliberal view that presents the process of accumulation and concentration of capital as the result of fair market mechanisms, large capitalist groups emerge as a combination of three factors: privileged access to finance, State protection, and family inheritance. Furthermore, it is argued that, if capital is considered as embodiment of power relations and not as factor of production, the link between concentration/accumulation of capital and economic growth is appropriately lost. Concentration strategies can have a detrimental effect on the economy. In Portugal, the dominance of these large economic groups contributed to the development of a rentist economic structure that was contrary to the goals of productive and economic development.

Details

Class History and Class Practices in the Periphery of Capitalism
Type: Book
ISBN: 978-1-78973-592-5

Keywords

Content available
Article
Publication date: 7 May 2019

Ricardo Antônio Câmara, Emerson Antonio Maccari and Renato Ribeiro Nogueira Ferraz

The purpose of this paper is to investigate the contribution of a project management approach to develop a tool to support the management of Brazilian stricto sensu

Abstract

Purpose

The purpose of this paper is to investigate the contribution of a project management approach to develop a tool to support the management of Brazilian stricto sensu graduate programs (SS-GP). The Adaptive approach was chosen by applying the Project Management Life Cycle (PMLC) method.

Design/methodology/approach

The study corresponds to the concept of applied research. The qualitative approach was used. The research strategy was the action research, where participants cooperate to understand their environment, identify problems and seek a solution, simultaneously producing and using the knowledge produced.

Findings

The results showed one possible way to apply a contingency project management approach to develop the tool. In addition, indicated that its application facilitated the project work, especially when finding a solution for the project’s development and when dealing with the changes inherent to the uncertainties about the problem.

Research limitations/implications

The lack of more updated information and the limitation of time and resources led to the reduction of the environment scope and of the number of functionalities developed.

Practical implications

To contribute to the generation of knowledge and expertise to support the management of SS-GP in activities such as providing information to the CAPES evaluation system, academic production analysis, collaborative researcher network analysis and post-graduation program monitoring and evaluation.

Originality/value

To fill a gap pointed out by several studies, that it is not possible to automatically generate input lists to be processed by ScriptSucupira tool, based on filtered criteria, comprising the entire universe of the Brazilian SS-PG. The creators of ScriptSucupira also declared to ignore the existence of an artifact similar to that.

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Book part
Publication date: 19 June 2012

Rodrigo Silva De Souza, Sônia Maria Da Silva Gomes, Adriano Leal Bruni, Gilca Garcia De Oliveira, Márcio Santos Sampaio and Juliano Almeida De Faria

Purpose – This research aimed to study the relationship between Enterprise Risk Management (ERM) and performance improvement.Design/methodology/approach – A questionnaire…

Abstract

Purpose – This research aimed to study the relationship between Enterprise Risk Management (ERM) and performance improvement.

Design/methodology/approach – A questionnaire was used as an instrument of data collection that was passed to managers of nonfinancial companies listed among the 500 largest and best firms in Brazil. The data from this study were analyzed with descriptive statistics and multivariate analysis of correlation and association.

Findings – The results showed that the main drivers of risk management were regulation, stakeholder demands, and business competitiveness. Among the practices that have been used, managers spotlight the utility of basic methods, more subjective, while technical methods, more quantitative, were of secondary importance. It was evidenced that the risks were weighted in the main activities of the organization. As a result, it was demonstrated that improved performance is associated with the maturity level of risk management and the level of stakeholders’ involvement in risk management.

Research limitations/implications – Other researches could examine how this process was developed in other countries and expand the number of organizations studied.

Practical implications – This study provides empirical evidence about theorist assumptions about the relationship between ERM and performance improvement.

Social implications – This study demonstrates the importance of human aspects for the processes of risk management and how external factors can influence this process.

Originality/value – It gives a broader and deeper comprehension of the process of risk management at nonfinancial firms in Brazil.

Details

Performance Measurement and Management Control: Global Issues
Type: Book
ISBN: 978-1-78052-910-3

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Article
Publication date: 18 April 2019

Marco Antonio Paula Pinheiro, Bruno Michel Roman Pais Seles, Paula De Camargo Fiorini, Daniel Jugend, Ana Beatriz Lopes de Sousa Jabbour, Hermes Moretti Ribeiro da Silva and Hengky Latan

The purpose of this paper is to identify and systematize journal articles that relate to new product development (NPD) within a circular economy (CE) and to present an…

Abstract

Purpose

The purpose of this paper is to identify and systematize journal articles that relate to new product development (NPD) within a circular economy (CE) and to present an integrative framework.

Design/methodology/approach

It was conducted a qualitative research based on a systematic review of the literature.

Findings

As results, it is presented the identification of the main practices and actions of CE applied to NPD, as well as the drivers, barriers and the stakeholders involved in the integration between CE and NPD.

Originality/value

The main contributions of this research are: mapping the state-of-the-art on the topic and systematizing the existing knowledge; providing useful insights for product development professionals considering adopting CE practices and tools in their NPD processes; and presenting a unique, integrative framework to guide organizations’ actions.

Details

Management Decision, vol. 57 no. 4
Type: Research Article
ISSN: 0025-1747

Keywords

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