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1 – 10 of 312The purpose of this paper is to study the influence of the induction heating phenomenon during magnetic pulse forming (MPF) of thin walled tube components. The approach is based…
Abstract
Purpose
The purpose of this paper is to study the influence of the induction heating phenomenon during magnetic pulse forming (MPF) of thin walled tube components. The approach is based on the advanced use of the multiphysics finite element software FORGE® coupling electromagnetism, heat transfer and solid mechanics. Although the global contribution of thermal effects is found to be almost negligible with respect to the volume forces, it can be observed that localized softening due to the heating process induces shock absorbing behavior.
Design/methodology/approach
Due to the strong multiphysics couplings between solid mechanics, electromagnetism and heat transfer, it is not always obvious to quantify the contributions of the various physical phenomena. It is thus intended here to take advantage of the numerical framework and tool that has developed to dissociate and quantify the influence of Joule heating phenomena due to eddy currents during MPF processes.
Findings
In this paper, the sensitivity of the MPF process has been analyzed to the induction heating source term for a specific tube forming case. An analysis of the electric output signal shows that inductance sensitivity to heating remains small when compared to the mechanical deformation. Regarding mechanical analysis of the process, induction heating contribution has a very slight impact at the global scale, but its effect is more noticeable at the small scale where it is likely that the localized heating induces shock absorption properties through softening. The extension of these results to other materials (for which the thermal dependency of mechanical behavior is different), as well as to a larger range of energy inputs, still needs to be carried out. Such phenomena should be considered for instance for high precision forming.
Originality/value
The analysis of the influence of heating due to eddy currents in magnetic pulse forming processes has not been extensively studied. The originality of this work is to try to quantify its effect on the process by using a numerical-based approach.
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João Filipe Fundinho, José Ferreira-Alves, Ana Carolina Braz, Zilda Aparecida Pereira Del Prette and Almir Del Prette
Identifying and assessing social skills has been a powerful way of linking human behaviour and human interaction with their consequences at significant developmental levels. There…
Abstract
Purpose
Identifying and assessing social skills has been a powerful way of linking human behaviour and human interaction with their consequences at significant developmental levels. There are some data connecting social skills with interpersonal violence but not yet with elder abuse. The reason might be the scarcity of quick and easy-to-apply measures of social skills. This study aims to adapt and validate the social skills inventory (SSI) (Del Prette and Del Prette, 2001) to the Portuguese population.
Design/methodology/approach
The authors conducted two studies. In Study 1, the authors gathered the psychometric characteristics of the SSI-Del-Prette through exploratoryfactor analysis (EFA) and confirmatory factor analysis (CFA). In Study 2, the authors correlated the new measure with measures of depression and empathy to test for divergent and concurrent validity.
Findings
The obtained version of the SSI-Del-Prette showed a good model fit and internal consistency. This measure presented six factors: conversation and social confidence, easiness of self-exposure, self-expression of positive affect, coping assertively with risk, defending interests and opinions and giving and receiving praise. The indicators of convergent and divergent validity supported the integrity of the measure.
Research limitations/implications
The adaptation of this measure of social skills opens new possibilities for studying these skills.
Originality/value
This paper provides an adaptation of a measure of six social skills expanded to the older adult population.
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João F. Fundinho and José Ferreira-Alves
This study aims to operationalize and test some predictions of a social exchange theory of elder abuse. The theory proposes that the combination of low resources and high…
Abstract
Purpose
This study aims to operationalize and test some predictions of a social exchange theory of elder abuse. The theory proposes that the combination of low resources and high dependency/low relational power increases the older adult’s risk of abuse. The authors tested these predictions by exploring the association between morality (indicator of resources) and abuse, moderated by social skills (indicator of power).
Design/methodology/approach
This was an exploratory study. The authors collected data from 62 participants between 64 and 94 years old who frequented social-recreational centres.
Findings
The authors found a positive association between the moral intuition harm/care and the report of emotionally and financially abusive behaviours and denial of rights. The moral intuition authority/respect is negatively associated with the same types of abuse. The effects of moral intuitions on the types of abuse increased in older adults with generally high social skills and low assertiveness.
Originality/value
This study provided initial results for a psychological interpretation of a social exchange theory of elder abuse and highlighted the importance of relational models where moral intuitions interact with social skills to predict elder abuse.
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João Filipe Fundinho, Diana Cunha Pereira and José Ferreira-Alves
The study of theoretical models explaining elder abuse has been one of the main gaps in the literature of the field. The extent of support of each theory is not clear. This study…
Abstract
Purpose
The study of theoretical models explaining elder abuse has been one of the main gaps in the literature of the field. The extent of support of each theory is not clear. This study aims to conduct a systematic review to examine research supporting or opposing six theories of elder abuse: caregiver stress theory, social exchange theory, social learning theory, bidirectional theory, dyadic discord theory and the psychopathology of the caregiver.
Design/methodology/approach
This study conducts a systematic review of the literature. Seven databases were searched six times using different keywords about each theory.
Findings
This paper finds 26,229 references and then organised and analysed these references using pre-established criteria. In total, 89 papers were selected, which contained 117 results of interest; these papers were summarised and assessed for conceptual, methodological and evidence quality. The results showed evidence in favour of all the explored theories, except for social learning theory, whose results indicate multiple interpretations of the theory. This study finishes this paper by proposing that each of these theories might explain different facets of elder abuse and that more research is necessary to understand how the predictions of these different theories interact.
Originality/value
This paper presents an extensive review of the literature on theoretical explanations of elder abuse. The findings can be of value for selecting theories for prevention programmes or providing a summary of the evidence for researchers and practitioners interested in the theoretical explanation of elder abuse.
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Filipe Castro Soeiro, Mariana Santos and José Alves
This paper aims to identify, analyze and discuss a potential new business opportunity that arises from the intersection of the digital music and game industries across borders…
Abstract
Purpose
This paper aims to identify, analyze and discuss a potential new business opportunity that arises from the intersection of the digital music and game industries across borders throughout network-based innovation approach.
Design/methodology/approach
The research draws on review of industry and academic literature, two online surveys and interviews, overall encompassed by a interpretative exploratory research methodology strategy.
Findings
The study supports the interest and potential for developing new products that combine digital music and casual digital games and that draw on firms from more than one region, while potentially involving a wide set of social network key stakeholders.
Research limitations/implications
This is an exploratory study in which findings should be challenged by confirmatory studies, including new product design and development of modeling techniques and network-based innovation approaches. This research contributes for the generation of new insights over technological and social driving forces, as well as emerging trends that shed light on the global competitiveness and on convergence of mobile gaming and digital music industries at regional innovation systems view. It also discusses spillover mechanisms based on new knowledge creation, knowledge diffusion and knowledge appropriation throughout the key stakeholders. The customer-centric innovation and network value autocorrelation hypothesis was validated, and both technology convergence and social factors are enhancement factors for innovation. Limitations and further research with larger sampling, specialization techniques and empirical modeling to in-depth analysis is suggested.
Practical implications
The study provides a framework for managers to develop new products that merges boundaries of related industries and encourages network-based innovation and cooperation between industry players, involving different regions. Ultimately, it shows opportunities of diversification, by introducing new products into new markets, as result of interdependence, soft factors, knowledge spillover and absorptive capacity mechanisms over a network of key stakeholders across different regions throughout customer-centric innovation, while impacting also new discussion on entrepreneurship and knowledge spillover theory and policy making.
Social implications
Social capital network is key for innovation and knowledge spillover among industry players. Content creation regarding products and services show high dependence on spatial external cultural influences, tastes and habits for customer-centric innovation, while impacting on social and learning customer experience, as well.
Originality/value
The paper has value for product development and innovation managers, researchers and practitioners. It discusses the value of innovation systems that are purposively developed beyond traditional geographic and industry boundaries.
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We investigate the role of fiscal policy, through several measures of government revenues and expenditures and redistribution, on disposable and market income inequality and…
Abstract
Purpose
We investigate the role of fiscal policy, through several measures of government revenues and expenditures and redistribution, on disposable and market income inequality and economic growth as well as the interaction between inequality and growth for 31 European countries from 1995 to 2019.
Design/methodology/approach
We use a simultaneous equations model to assess the linkage between economic growth, inequalities and fiscal policy variables.
Findings
(1) While disposable income inequality has a negative effect on all fiscal policy variables, market income inequality has a mixed effects; (2) for Eastern European countries, public consumption and direct taxation positively influence economic growth; conversely, for Western European countries, the effects are negative; (3) disposable and market income inequality have a positive effect on growth for Eastern European countries, and a negative influence on growth for Western European countries; (4) growth contributes to the increase of disposable and market income inequality for Eastern European countries; for Western European countries, the effects are opposite; and (5) fiscal policy allows for the attenuation of disposable income inequality.
Originality/value
The different results between the role of market and disposable income inequality levels lead us to suggest tax progressivity as an important feature to consider when analyse the trivariate relationship between inequalities, fiscal policy and growth. Furthermore, there are different dynamics between inequality and growth, and the role of fiscal policy, on both Eastern and Western European countries.
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Biagio F. Giannetti, Luis Velazquez, Krystal M. Perkins, Marisela Trillas-Ortiz, Carlos Anaya-Eredias, Feni Agostinho, Cecilia M.V.B. Almeida, Marcos Jose Alves Pinto and Nora Munguia
Students play an unequivocal role in sustainable universities as they are theorized to embody the mission of a sustainable university through a sustainable lifestyle and spread…
Abstract
Purpose
Students play an unequivocal role in sustainable universities as they are theorized to embody the mission of a sustainable university through a sustainable lifestyle and spread sustainability practices during their professional careers. Despite this, it is not well known how or why students come to embody a sustainable lifestyle. This study aims to better understand the relationship between happiness, academic achievement and sustainability behaviors among the student population in a Mexican higher education institution.
Design/methodology/approach
In a questionnaire study, engineering and psychology university students at a large public university in northwestern Mexico answered questions regarding their environmental sustainability behaviors, happiness and academic performance. A stratified random sampling technique was used to obtain the sample population that best represents the entire population. After chi-square tests, it was confirmed that the three variables were independent of one another. Therefore, a series of correspondence analyses were conducted to examine clusters or patterns that could indicate relationships among the three variables.
Findings
The main finding from this work was that the happiest and most academically astute participants were only slightly environmentally sustainable or not sustainable at all. The lack of environmental sustainability in students from one of the most top-rank sustainable universities in Mexico does not align with previous sustainability reports. External factors to the university, such as cultural values and extreme weather conditions, may have influenced students’ sustainability behaviors.
Research limitations/implications
As with any other questionnaire study, the provided data is subject to interpretation, judgment and bias. In addition, the environmental and happiness index used in this study are not free of criticizing, and some author had disputed its efficacy. Finally, this study’s findings did not determine any causality or directionality between any of the latent variables. However, causality and directionally between environmental sustainability-happiness and happiness-academic performance have to be found in both directions.
Practical implications
Despite the unsustainability of students in this study, this study has several contributions. First, it provides an evaluation of a sustainable university from the perspectives and behaviors of students. The views of students as they relate to the complexities and visions of a sustainable university have remained relatively underexamined. Second, these analyses point to specific sustainability-oriented challenges and inadvertent barriers (e.g. extreme weather patterns) toward the embodiment of a sustainable lifestyle. These challenges and barriers suggest that sustainable universities need to address the dynamic changes inherent in sustainable development. Finally, this study indicates that the link between happiness, academic performance and sustainability may be more complicated and driven by cultural and structural barriers. The issue of barriers, as they relate to sustainability behaviors, is highly relevant and presents important opportunities and questions for future research.
Originality/value
This study provides an evaluation of a sustainable university from the perspectives and behaviors of students. Students’ views as they relate to the complexities and visions of a sustainable university have remained relatively underexamined. Second, these analyses point to specific sustainability-oriented challenges and barriers as they relate to the embodiment of a sustainable lifestyle. These challenges and barriers suggest that sustainable universities need to address the dynamic changes inherent in sustainable development. Finally, this study indicates that the link between happiness, academic performance and sustainability may be more complicated and driven by cultural and structural barriers.
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João F. Fundinho and José Ferreira-Alves
Risk assessment in elder abuse is usually considered an additive process; risk factors are viewed as independent, and the higher the number of risk factors, the higher the risk…
Abstract
Purpose
Risk assessment in elder abuse is usually considered an additive process; risk factors are viewed as independent, and the higher the number of risk factors, the higher the risk. This study aims to explore the effect of the interaction between cognitive structures (episodic memory, perceptual speed, verbal fluency, executive function) and functional dependency on elder abuse.
Design/methodology/approach
The authors collected data from 62 participants, aged between 64 and 94 years old, in the Minho region of Portugal. Face-to-face interviews were conducted to apply the assessment procedures.
Findings
Results showed that emotional abuse is predicted by episodic memory and phonemic fluency, financial abuse by perceptual speed and phonemic fluency and neglect by perceptual speed. Moderation analysis showed that these effects were greater for older adults with higher dependence on movement and lower dependence on hygiene and daily organization. This study supports the hypothesis that the risk of elder abuse is interactive, highlighting a limitation of current risk assessment procedures.
Originality/value
The current study explores the possibility of risk factors for elder abuse interacting. Understanding how risk factors interact can help to design more accurate measures of the risk of elder abuse.
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Ana João Santos, José Ferreira‐Alves and Bridget Penhale
The purpose of this paper is to identify, describe and compare the studies of the prevalence of abuse and neglect of older adults developed in Portugal.
Abstract
Purpose
The purpose of this paper is to identify, describe and compare the studies of the prevalence of abuse and neglect of older adults developed in Portugal.
Design/methodology/approach
A retrospective bibliographic search of seven descriptors in English and Portuguese, of academic and professional papers and university institutional repositories was performed.
Findings
Of the nine studies selected, seven consisted of grey literature – research developed within the course of academic post‐graduate studies. The studies were conducted on a small scale, more often than not, through a non‐probabilistic convenience sampling method. From the nine studies, two instruments prevailed: the Questions to Elicit Elder Abuse aimed at older adults and the Caregiver Abuse Screen aimed at caregivers. Community‐dwelling older adults self‐reported a higher prevalence of abuse (between 66.7 and 86.7 per cent) than care professionals working with older adults suffering from dementia (between 26.7 and 47.4 per cent). Emotional abuse and neglect were the first and second most prevalent forms of abuse, followed by financial abuse, whereas physical abuse was the least prevalent type of abuse encountered. A poorer perception of health, not making/receiving visits and residing in an urban area were the more consistent variables associated with abuse of older adults.
Originality/value
Overall, this paper provides a first consideration to the prevalence rates of older adult abuse and neglect from research studies in Portugal. The revised design studies and screening methods employed can help researchers improve future study design and move from the description to a more theoretically oriented research. Furthermore, it can help practitioners learn screening methods and discover the findings associated with abuse.
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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.
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