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Article
Publication date: 8 May 2018

Phamella Reinert Tamanini Piccoli, Sérgio Henrique Lopes Cabral, Luiz Fernando de Oliveira, Odirlan Iaronka, Diogo Fernando Harmel, João Paulo Vieira and João Egídio Sapeli

This paper aims to present the proposition of a new experimental method for obtaining very crucial data of the structural steel that is used in the tank of oil filled…

Abstract

Purpose

This paper aims to present the proposition of a new experimental method for obtaining very crucial data of the structural steel that is used in the tank of oil filled power transformers, namely, the volumetric losses and the magnetic permeability, both in function of the density of magnetic flux. Although these data are not usually available, they are fundamental for helping the transformer designer in avoiding the occurrence of hot spots in the transformer tank. The adoption of a conventional Epstein frame has restrictions because of the incompatibility between it and the samples of the steel.

Design/methodology/approach

The basis of the proposition is the same as that of the Epstein frame, with significant attention paid to the additional losses in the winding that creates the magnetic flux to the samples in the core. These losses can be significant and are created by the harmonics of current along the windings and are summed to the ohmic losses. For separating these winding losses from the magnetic losses, each sample is made as being the core of a toroidal 1:1 transformer. Thus, two tests with two identic of these toroidal transformers are necessary.

Findings

The proposed methodology is simple, because it is very similar to the classical tests of transformers (no-load and short-circuit tests). The process of separation of losses requires only a numerical fitting of curves for adjusting the winding losses as a function of the current amplitude, and the obtained results are coherent with the expected behavior of the magnetic losses and the magnetic permeability of a structural steel.

Research limitations/implications

The method gives very approximate results in comparison to those obtained using the Epstein frame. The influences of the temperature and/or of the skin effect have not been evaluated.

Practical implications

Practical, real and thus confident data of structural steel, such as the magnetic permeability and the volumetric losses (hysteresis and Foucault), become available for the transformer designer to take actions for not only reducing the tank losses but also for avoiding the occurrence of hot spots through computer simulation.

Originality/value

The proposition is very new, as it allows to test steel samples with a size that does not fit to a usual Epstein frame. It takes into account the real influence of harmonic of currents in the losses along the winding of a classical Epstein frame, which has not been so far mentioned. It allows obtaining data of structural steel that had not been considered important until now.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 37 no. 3
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 8 June 2012

Filipe Martinho, Henrique N. Cabral, Ulisses M. Azeiteiro and Miguel A. Pardal

Estuaries and shallow coastal areas are among the most productive ecosystems in the world, being recognized as important nursery areas for marine fish. The aim of this…

Abstract

Purpose

Estuaries and shallow coastal areas are among the most productive ecosystems in the world, being recognized as important nursery areas for marine fish. The aim of this paper is to provide a comprehensive overview of the causes and consequences of recruitment variability in marine fish, contributing to ecosystem‐based management strategies of estuarine and coastal areas.

Design/methodology/approach

The authors conducted a literature review, exploring the role of estuaries as nursery areas for marine fish, and analyzed the connectivity between estuaries and coastal areas, the main processes driving recruitment variability in marine fish during their pelagic (larval) and estuarine residency (juveniles) phases, and how it can be translated into variable coastal stocks.

Findings

Recruitment variability in marine fish is still one of the most important issues in marine fisheries ecology. In this paper, the authors demonstrate the potential of several processes for inducing variability in recruitment, including density‐independent mechanisms such as temperature, hydrodynamics, river flow and large‐scale factors, as well as density‐dependent processes, related with food abundance, competition and predation. Lastly, the authors evaluated the connectivity between estuaries and the ocean, and how this relationship can influence coastal stocks in the future. The main findings were analyzed in the context of climate change, which has been demonstrated to influence marine life at the individual, population and ecosystem levels.

Originality/value

This paper is a valuable tool for marine researchers and stakeholders, since it summarizes some of the most important processes that drive recruitment variability in marine fish, and how this information can be used for establishing sustainable ecosystem management programmes.

Details

Management of Environmental Quality: An International Journal, vol. 23 no. 4
Type: Research Article
ISSN: 1477-7835

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Article
Publication date: 2 February 2015

Cheila Almeida, Themistoklis Altintzoglou, Henrique Cabral and Sofia Vaz

Portugal is a country with one of the highest seafood consumption per capita in the world. The purpose of this paper is to understand the Portuguese knowledge and…

Abstract

Purpose

Portugal is a country with one of the highest seafood consumption per capita in the world. The purpose of this paper is to understand the Portuguese knowledge and attitudes towards seafood and relate it to consumers’ environmental conscious.

Design/methodology/approach

Using an internet-based survey the authors investigated the relation of socio-demographic variables to consumption frequency and how knowledge about seafood is associated with interest in different information when purchasing seafood products.

Findings

Results demonstrate consumption of a high diversity of species. Tuna and cod are the top species related to convenience and food traditions. There is a preference to consume seafood mostly at home and prepared grilled. Differences between higher and lower knowledgeable consumers’ related to seafood, show that the first ones have a more diversified use of species and high prevalence of small pelagic fish.

Research limitations/implications

The findings are influenced by the sample obtained, which over-represents well-educated and higher income people. Moreover the self-reported consumption can be biased by individuals own perceptions and different seafood products. Better estimations of consumption frequency could result from asking more detailed information, as such as by species or meal occasions.

Practical implications

Portuguese consumers have high knowledge about seafood but it is not necessarily related to sustainable choices. To help in sustainable seafood choices it might be more effective to promote existing habits based on Portuguese traditions that still are good alternatives for the marine environment.

Originality/value

A higher consumer’s knowledge does not necessarily mean more sustainability.

Details

British Food Journal, vol. 117 no. 2
Type: Research Article
ISSN: 0007-070X

Keywords

Content available
Article
Publication date: 8 June 2012

Abstract

Details

Management of Environmental Quality: An International Journal, vol. 23 no. 4
Type: Research Article
ISSN: 1477-7835

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Article
Publication date: 30 September 2014

Lucas Amaral Lauriano, Heiko Spitzeck and João Henrique Dutra Bueno

– This paper aims to present the state of corporate citizenship in Brazil.

Abstract

Purpose

This paper aims to present the state of corporate citizenship in Brazil.

Design/methodology/approach

The results of a survey of Brazilian companies is used to analyze the state of corporate citizenship in Brazil. The survey was constructed using the methodology developed by Mirvis & Googins on measuring the stage of corporate citizenship, and 172 valid responses from Brazilian companies were received.

Findings

Data suggest that Brazilian companies have an advanced understanding of corporate citizenship and the strategic intention to integrate citizenship into their business. When it comes to leadership, structures, issue management, stakeholder relationships and transparency, however, their maturity in terms of citizenship stays in less advanced stages. In sum, Brazilian companies are advanced in the concept but less developed in the practice of corporate citizenship.

Research limitations/implications

The sample consists of 172 valid responses from companies in Brazil acting in various sectors and thus does not allow the determination of citizenship maturity in selected sectors.

Practical implications

The research points to a gap regarding understanding and practice in corporate citizenship in Brazil. To foster evolution of corporate citizenship, Brazilian companies are advised to work especially on leadership engagement, organizational structures, issue management, stakeholder relationships and transparency.

Originality/value

This is the first study about the maturity of corporate citizenship in Brazilian companies.

Details

Corporate Governance, vol. 14 no. 5
Type: Research Article
ISSN: 1472-0701

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Article
Publication date: 20 April 2020

Maisa Mendonça Silva, Thiago Poleto, Ana Paula Henriques de Gusmão and Ana Paula Cabral Seixas Costa

The purpose of this paper is to propose a strategic conflict analysis, based on the graph model for conflict resolution (GMCR), that is applied to information technology…

Abstract

Purpose

The purpose of this paper is to propose a strategic conflict analysis, based on the graph model for conflict resolution (GMCR), that is applied to information technology outsourcing (ITO) in a real-world software development and implementation process in Brazil.

Design/methodology/approach

Because the idea of this study is to answer “why” the ITO conflicts occur and “how” they can be avoided, the case study methodology was adopted. The software GMCR II was used to analyze the interactions between an IT vendor and an IT client.

Findings

The results suggest that a lack of relational governance is a critical issue that could be handled to improve the interaction between those involved.

Research limitations/implications

The main results are restricted to the case study and cannot be generalized. Moreover, a specific limitation of this paper pertains to the use of the GMCR and the consequent difficulty for IT vendors and IT clients to work with a large number of actions and to set preferences for several states of conflict.

Practical implications

The strategic analysis of outsourcing conflicts provides a holistic view of the current situation that may assist the client and vendor in future decisions and identify guidelines to ensure successful ITO. Therefore, this paper provides an effective guide for clients and vendors to better manage conflicts and establish a contingency vision to avoid such disputes.

Originality/value

The ITO conflict is analyzed using the GMCR, considering both perspectives of the outsourcing process (vendors and clients).

Details

Journal of Enterprise Information Management, vol. 33 no. 6
Type: Research Article
ISSN: 1741-0398

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Article
Publication date: 25 November 2019

Luis Henrique Souza, Elisabeth Kastenholz, Maria de Lourdes Azevedo Barbosa and Mariana Sousa e Silva Cabral Carvalho

The emergence of peer-to-peer accommodation (P2PA) introduces new values and meanings to the hospitality experience. Focusing on the diverse dimensions of the tourist…

Abstract

Purpose

The emergence of peer-to-peer accommodation (P2PA) introduces new values and meanings to the hospitality experience. Focusing on the diverse dimensions of the tourist experience, the purpose of this paper is to identify and assess the relative importance of the main dimensions of guests’ P2PA experience and its relationships with perception of authenticity, place attachment and loyalty to both the visited destination and the P2PA.

Design/methodology/approach

A qualitative netnographic approach with content analysis permitted the analysis of 250 reviews taken from the Airbnb platform, specifically focusing on P2PAs where guests stay with hosts in the same space.

Findings

The results of the study suggest that guests’ P2PA experiences are particularly influenced by the experience dimensions “aesthetic/sense”, “relate/social interaction”, “escape”, “act” and “feel”. P2PA experiences also result in loyalty intentions, to both the visited destination and the particular P2PA. The dimensions “aesthetic/sense”, “relate/social interaction” and “escape” stand out as most influential in determining perceived authenticity. In turn, place attachment is most influenced by the dimensions “feel” and “relate/social interaction”.

Research limitations/implications

Limitations of this research need to be acknowledged: the P2PA guest experience is explored from the restricted perspective of online reviews using passive netnography. Therefore, some criteria of data collection, for instance, gathering only reviews written in English and with more than 80 words, may be limitative in a more comprehensive assessment of the P2PA experience. Another point is, although P2PA platforms such as Airbnb encourage their guests to review the experience, some people are not inclined to do so; therefore, the published reviews may not reflect all possible experiences at these accommodations inclined to do so; therefore, the published reviews may not reflect all possible experiences at these accommodations.

Originality/value

This study suggests a comprehensive analytical framework for assessing the “holistic multidimensional tourist experience”, integrating Pine and Gilmore’s (1999) and Schmitt’s (1999) approaches, thus deepening the conceptual and methodological debate on the tourist experience. It further contributes to a better understanding of the dimensionality of the tourist experience in the context of shared accommodation. The dimensions under analysis and their association with perceived authenticity, loyalty and place attachment are both of theoretical and practical interest, suggesting approaches to improve the P2PA experience as well as the image and success of the destinations where these units are located.

Details

International Journal of Tourism Cities, vol. 6 no. 1
Type: Research Article
ISSN: 2056-5607

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Article
Publication date: 7 July 2020

Thiago Poleto, Thárcylla Rebecca Negreiros Clemente, Ana Paula Henriques de Gusmão, Maisa Mendonça Silva and Ana Paula Cabral Seixas Costa

The information technology (IT) outsourcing (ITO) decision is a key issue in strategic and operational management and is considered a main critical factor influencing…

Abstract

Purpose

The information technology (IT) outsourcing (ITO) decision is a key issue in strategic and operational management and is considered a main critical factor influencing successful organizational performance and technology assessment. The purpose of this paper is to propose a framework combining value-focused thinking (VFT) methodology and the FITradeoff method to support decisions regarding ITO.

Design/methodology/approach

This study answers the following questions: How to identify, in a structured way, the objectives that should be considered in an ITO decision process in a changing environment? How to identify new IT services to be outsourced from the established objectives? The VFT method is recommended in this case to structure and model the problem. Moreover, the FITradeoff multicriteria method was considered in this study to support the evaluation and prioritization of IT services in an ITO decision

Findings

The framework provides promising results for ITO decisions. This study revealed that a lack of strategic and fundamental objectives is a critical issue in making ITO decisions. Although the VFT methodology is subjective in nature, it promotes a better understanding of goals and values, and FITradeoff allows the decision-maker to make comparisons of consequences based on his/her preferences.

Research limitations/implications

The recommendations of the study are restricted to the case study and cannot be generalized. In addition, applying the method requires attention in determining the criteria used for outsourcing IT.

Practical implications

The strategic analysis of ITO provides a holistic view of the current situation since (i) the VFT methodology enables the IT manager to generate new alternatives to assist future decisions and (ii) FITradeoff has been demonstrated as a suitable option to evaluate ITO decisions.

Originality/value

To the best of our knowledge, this is the first paper to utilize a problem structuring method (VFT) to identify criteria and alternatives based on the organizational values and objectives. This is integrated with a multicriteria method that uses partial information and may consequently lead to fewer inconsistencies (FITradeoff) in the context of ITO.

Details

Management Decision, vol. 58 no. 11
Type: Research Article
ISSN: 0025-1747

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Article
Publication date: 11 September 2017

Marina Cabral Rebouças, Maria do Carmo Passos Rodrigues, Silvia Maria de Freitas, Bruno Burnier Arcanjo Ferreira and Vanderson da Silva Costa

The number of researches that evaluate how behavioural and personality issues affect consumers’ acceptance and perception of food is increasing. Thus, this study aimed to…

Abstract

Purpose

The number of researches that evaluate how behavioural and personality issues affect consumers’ acceptance and perception of food is increasing. Thus, this study aimed to evaluate the effect of nutritional information and health claims related to soya and cashew nut beverages over consumers’ acceptance and perception regarding nutritional value and healthiness and to verify whether behavioural and personality issues affect such evaluation.

Design/methodology/approach

The samples were evaluated in two phases, with (blind phase) and without information (informed phase) about their composition, nutritional characteristics and functional claims related to some of their ingredients. The sensory evaluation data were analysed by means of the analysis of variance for repeated measures, applying 2 (information) × 2 (beverage) and generalised linear model to evaluate the effect of information over the acceptance averages, as well as over the perception of healthy food and nutritional value.

Findings

Information on composition, nutritional characteristics and functional claims related to the cashew nut and soya beverages did not influence flavour acceptance (p-value = 0.250) and overall impression (p-value = 0.316), but had a positive impact on consumers’ perception regarding healthiness (p-value < 0.001) and nutritious value (p-value < 0.001) of both beverages, the cashew nut beverage being perceived as more nutritious and healthier than the soya beverage. Consumers’ different characteristics with respect to their interest in healthy eating (high and low) and food neophobia (neophiliacs and neophobics) did not have any influence on the beverages’ acceptance, as well as on the perception of healthy food and nutritious value.

Originality/value

This work compares consumers’ acceptance and perception regarding nutritional value and healthiness with relation a totally unique product in the Brazilian market, and in the world, a new functional beverage made from cashew nuts, with a soya-milk beverage. Until this moment, there are no studies comparing consumer acceptance and perception of products based on hydrosoluble extract-base added with fruit juice which evaluate the influence of behavioural and personality characteristics of consumers in their perception and acceptance towards these products.

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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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