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Article
Publication date: 4 June 2020

Allan De Barros and Ivan Chabu

This paper aims to develop models and simulations focused on the prediction of electromagnetic forces acting on the stator core of a synchronous machine. It contributes to the…

180

Abstract

Purpose

This paper aims to develop models and simulations focused on the prediction of electromagnetic forces acting on the stator core of a synchronous machine. It contributes to the study of stator core vibrations.

Design/methodology/approach

An analytical model based on the rotating fields’ theory including the damper winding contribution was developed. Such model allows the comprehension of airgap magnetic field distribution and the consequent pressure distribution. Focus was given to the pressure sub-harmonics due to the usual fractional winding configuration of low speed machines. A comparative numerical model was also developed and applied to an example laboratory machine. Partial validation measurements were performed.

Findings

The paper provides the predicted electromagnetic forces and the relative influences of damper winding and teeth tangential forces on each pressure harmonic. It is shown by how much such effects can influence the amplitude of pressure sub-harmonics from a fractional stator winding.

Research limitations/implications

The performed validation measurements were based on the airgap field distribution, but the resulting core vibration at load was not measured. Therefore, researchers are encouraged to perform additional tests for improved validation.

Practical implications

The obtained models and results are of great importance for the design phase of new generators and for the diagnosis process of existing machines with core vibration problems.

Originality/value

As a contribution of this paper, the magnitude of indirect effect of tangential forces and the effect of damper winding are comparatively quantified for each pressure harmonic. The given approach contributes to the relative evaluation of these effects especially on the sub-harmonics from the fractional stator winding.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering , vol. 39 no. 4
Type: Research Article
ISSN: 0332-1649

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Book part
Publication date: 1 September 2016

Sidney M. Greenfield

This chapter examines the economics of alternative healing in Brazil.

Abstract

Purpose

This chapter examines the economics of alternative healing in Brazil.

Methodology/approach

Two narratives are selected from extensive observations and interviews over a period of years. The presentation chronicles the accounts of people experiencing physical symptoms who sought further advice from friends and relatives after visits to conventional medical providers failed to cure them.

Findings

In response to a recommendation from one of those consulted, one person went to a spirit “received” by a Kardecist/Spiritist healer-medium while the other obtained treatment from an otherworldly being at an Umbanda center. The respective “therapeutic” procedures are described and analyzed in terms of the beliefs and the worldviews of each of the traditions. If satisfied with the outcome, the patient fulfills an implicit bargain with the otherworldly being(s) and its religious group by adopting their beliefs and practices. This conversion is “payment” for the healing services rendered.

Social implications

Since some treatments are successful and others are not, the implications of this exchange is that many Brazilians may change their religions several times during their lifespan. As a result of this behavior individuals circulate among the several religious groups that are always in competition with each other.

Originality/value

The analysis provides a distinctive insight into, and original way to understand, alternative health care in Brazil.

Details

The Economics of Ecology, Exchange, and Adaptation: Anthropological Explorations
Type: Book
ISBN: 978-1-78635-227-9

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Book part
Publication date: 15 November 2023

Nicholous M. Deal, Christopher M. Hartt and Albert J. Mills

Abstract

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ANTi-History: Theorization, Application, Critique and Dispersion
Type: Book
ISBN: 978-1-80455-242-1

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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 politics in…

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: 24 February 2021

Mauricio Carvache-Franco, Orly Carvache-Franco, Ana Gabriela Víquez-Paniagua, Wilmer Carvache-Franco and Allan Perez-Orozco

The objectives of this study were to (a) analyze the relationship between sociodemographic aspects and motivations in ecotourism and (b) identify the relationship between…

631

Abstract

Purpose

The objectives of this study were to (a) analyze the relationship between sociodemographic aspects and motivations in ecotourism and (b) identify the relationship between sociodemographic aspects and satisfaction and loyalty variables.

Design/methodology/approach

The research was carried out in the Arenal National Park and the Caño Negro National Wildlife Refuge in Costa Rica, an ecologically important ecotourism destination. The sample consisted of 310 surveys obtained in situ. For data analysis, factor analysis and the multiple regression method were used.

Findings

The results show that younger tourists tend to be more motivated by self-development, whereas older tourists and lower-income tourists are more motivated toward strengthening interpersonal relationships with family and friends. In contrast, tourists with lower education levels are highly motivated by novelty, feel more satisfied with the visit and are more willing to recommend and say positive things about the destination. Besides, repeat visitors are most likely to return.

Research limitations/implications

The present study was limited by the timing in which it was carried out. Among the future lines of research, studies that address the relationship between sociodemographic variables in the different ecotourism segments should be conducted.

Practical implications

Regarding the practical implications, this study helps companies related to tourism to pay attention to the sociodemographic characteristics of tourists to design activities and services according to their motivations, satisfaction and loyalty. For younger tourists who are motivated by self-development, activities and services related to learning about nature can be planned to encourage their personal growth, new abilities and individual skills. Regarding elderly and lower-income tourists, who are motivated to be with family and friends, recreational activities to improve family and friendship relationships can be promoted.

Social implications

These findings will serve to plan attractions and services in protected areas, benefiting the destinations and the communities sustainably.

Originality/value

One of the contributions of this study is to find a negative relationship between the level of education and other variables such as satisfaction, intentions to recommend and intentions to say positive things about the destination. This research also identified a negative relationship between age and the self-development motivational dimension, a positive relationship between age and being with family and friends dimension, a negative relationship between income and being with family and friends dimension and a negative relationship between the number of visits and the novelty dimension.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 12 no. 3
Type: Research Article
ISSN: 2044-1266

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Article
Publication date: 1 February 1974

Frances Neel Cheney

Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are…

411

Abstract

Communications regarding this column should be addressed to Mrs. Cheney, Peabody Library School, Nashville, Term. 37203. Mrs. Cheney does not sell the books listed here. They are available through normal trade sources. Mrs. Cheney, being a member of the editorial board of Pierian Press, will not review Pierian Press reference books in this column. Descriptions of Pierian Press reference books will be included elsewhere in this publication.

Details

Reference Services Review, vol. 2 no. 2
Type: Research Article
ISSN: 0090-7324

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Book part
Publication date: 18 January 2022

Dante Amengual, Enrique Sentana and Zhanyuan Tian

We study the statistical properties of Pearson correlation coefficients of Gaussian ranks, and Gaussian rank regressions – ordinary least-squares (OLS) models applied to those…

Abstract

We study the statistical properties of Pearson correlation coefficients of Gaussian ranks, and Gaussian rank regressions – ordinary least-squares (OLS) models applied to those ranks. We show that these procedures are fully efficient when the true copula is Gaussian and the margins are non-parametrically estimated, and remain consistent for their population analogs otherwise. We compare them to Spearman and Pearson correlations and their regression counterparts theoretically and in extensive Monte Carlo simulations. Empirical applications to migration and growth across US states, the augmented Solow growth model and momentum and reversal effects in individual stock returns confirm that Gaussian rank procedures are insensitive to outliers.

Details

Essays in Honor of M. Hashem Pesaran: Panel Modeling, Micro Applications, and Econometric Methodology
Type: Book
ISBN: 978-1-80262-065-8

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Book part
Publication date: 13 March 2023

Ertugrul Uysal, Sascha Alavi and Valéry Bezençon

Anthropomorphism in Artificial Intelligence (AI)-powered devices is being used increasingly frequently in consumer-facing situations (e.g., AI Assistants such as Alexa, virtual…

Abstract

Purpose

Anthropomorphism in Artificial Intelligence (AI)-powered devices is being used increasingly frequently in consumer-facing situations (e.g., AI Assistants such as Alexa, virtual agents in websites, call/chat bots, etc.), and therefore, it is essential to understand anthropomorphism in AI both to understand consequences for consumers and to optimize firms' product development and marketing. Extant literature is fragmented across several domains and is limited in the marketing domain. In this review, we aim to bring together the insights from different fields and develop a parsimonious conceptual framework to guide future research in fields of marketing and consumer behavior.

Methodology

We conduct a review of empirical articles published until November 2021 in Financial Times Top 50 (FT50) journals as well as in 41 additional journals selected across several disciplinary domains: computer science, robotics, psychology, marketing, and consumer behavior.

Findings

Based on literature review and synthesis, we propose a three-step guiding framework for future research and practice on AI anthropomorphism.

Research Implications

Our proposed conceptual framework informs marketing and consumer behavior domains with findings accumulated in other research domains, offers important directions for future research, and provides a parsimonious guide for marketing managers to optimally utilize anthropomorphism in AI to the benefit of both firms and consumers.

Originality/Value

We contribute to the emerging literature on anthropomorphism in AI in three ways. First, we expedite the information flow between disciplines by integrating insights from different fields of inquiry. Second, based on our synthesis of literature, we offer a conceptual framework to organize the outcomes of AI anthropomorphism in a tidy and concise manner. Third, based on our review and conceptual framework, we offer key directions to guide future research endeavors.

Details

Artificial Intelligence in Marketing
Type: Book
ISBN: 978-1-80262-875-3

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Article
Publication date: 31 May 2024

Md Washim Raja, David Allan and Chinmoy Bandyopadhyay

This paper aims to provide a comprehensive framework on how and when musical elements such as keys, complexity, tempo and volume influence consumers’ mood, attention, information…

477

Abstract

Purpose

This paper aims to provide a comprehensive framework on how and when musical elements such as keys, complexity, tempo and volume influence consumers’ mood, attention, information recall, product evaluation and purchase decisions in the context of retail therapy.

Design/methodology/approach

This paper builds on a critical literature review to develop a conceptual framework and formulate relevant propositions, leveraging self-regulation and self-control theories.

Findings

Through our analysis of these studies, we found that in musical retail therapy, minor keys paired with high complexity can intensify negative moods and negative product evaluation. Conversely, major keys combined with low complexity can moderate negative and positive moods, leading to positive product evaluations. We argue that high tempo and high volume can invoke high arousal and low impulse control, leading to low attention and low recall. This subsequently moderates the negative mood, resulting in weak negative product evaluation. Low tempo and low volume, however, invoke low arousal and high impulse control, leading to high attention and high recall, which moderates negative mood and negative product evaluation.

Originality/value

Reflecting on the limitations of the existing studies, this conceptual work proposes a comprehensive theoretical framework for understanding the significance of musical elements in retail therapy that can enhance consumers moods and experiences. Further, the current paper is different from the existing literature in that it helps academic researchers and marketers understand different ways to use musical elements that can positively affect consumer behavior in a complex situation like retail therapy.

Details

Marketing Intelligence & Planning, vol. 42 no. 4
Type: Research Article
ISSN: 0263-4503

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Article
Publication date: 1 January 1992

Christos Pitelis

Aims to explore the possibility of developing a neoclassical theoryof institutional failure, based on “transaction costs”.Critically assesses the role of institutions in General…

752

Abstract

Aims to explore the possibility of developing a neoclassical theory of institutional failure, based on “transaction costs”. Critically assesses the role of institutions in General Equilibrium theory and concludes that, with the exception of the market (price mechanism), this is institution‐free. This is unsatisfactory, given the importance of the firm and the state, in particular, which have received wide attention recently in the theory of transaction costs. It is claimed that General Equilibrium theory can be given microfoundations based on transaction costs. This provides the possibility of a neo‐classical theory of institutional failure. It also has important implications on the nature and scope of economic theory in general and the plan versus markets debate in particular.

Details

Journal of Economic Studies, vol. 19 no. 1
Type: Research Article
ISSN: 0144-3585

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