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The purpose of this paper is to describe a model that can be used in the estimation of thermal fatigue limited service life of induction coils.
Abstract
Purpose
The purpose of this paper is to describe a model that can be used in the estimation of thermal fatigue limited service life of induction coils.
Design/methodology/approach
Previous work indicates that the temperature of the cross section of an induction coil can be used to estimate thermal fatigue limited service life. This paper presents a model for estimating these temperatures based on a coupled model. Joule losses modelled in Flux2D are coupled with cooling modelled in Fluent3D. These models are controlled and combined by Python scripts that iterate the heat transfer and temperatures of heat exchange regions between the two domains.
Findings
The combined model is shown to converge nicely. The model is also applied to an optimization problem where a high power loss, copper region is surrounding a wedge‐shaped cooling channel. The point of the wedge was replaced by a radius that was optimized. The optimum was considered where the thermal fatigue service life is maximized, i.e. where the peak deviation from mean temperature in the cross section was at a minimum. The results show that the optimum corner radii are small, typically 0.25‐0.5 mm.
Originality/value
This is the first paper where the full model is presented and used to optimize specific cases.
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Elin Kubberød and Inger Beate Pettersen
Building on entrepreneurial learning research, the purpose of this paper is to argue that the students participating in foreign entrepreneurial education programmes can have…
Abstract
Purpose
Building on entrepreneurial learning research, the purpose of this paper is to argue that the students participating in foreign entrepreneurial education programmes can have realistic entrepreneurial learning experiences. This research addresses two specific questions: how situated ambiguity induced by a foreign culture may contribute to contextual entrepreneurial learning in education, and whether ambiguity induced by cross-cultural situated experience can stimulate critical reflection and important learning outcomes in entrepreneurship and increase entrepreneurial self-efficacy (ESE).
Design/methodology/approach
The authors adopted a phenomenological perspective in the research, and used focus group interviews and the critical incident technique to investigate Norwegian master’s students’ experiences of entrepreneurial learning in a long-term practice in an American startup.
Findings
The empirical findings reveal that the students perceived the foreign cultural learning setting as imbued with ambiguity and uncertainty. However, as the students enhanced their understanding of the culture and entrepreneurial milieu through observations and co-participating, they managed to adapt and develop new strategies and methods to cope with the new environment. Eventually, the students became more entrepreneurial and developed their ESE.
Practical implications
The research demonstrates how educators can design educational programmes that approach real entrepreneurial learning contexts. Nevertheless, the research also displays several ethical dilemmas that educators need to address.
Originality/value
The study delineates a new concept for educational designs called situated ambiguity, which reinforces the essence of situated entrepreneurial learning with cross-cultural learning. This concept offers a promising avenue for educators to approach real entrepreneurial learning in both theory and practice.
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Zeshan Ghafoor, Irfan Ahmed and Arshad Hassan
This study aims to examine the impact of audit committee (AC) characteristics and enterprise risk management (ERM) on stock price synchronicity (SYNCH).
Abstract
Purpose
This study aims to examine the impact of audit committee (AC) characteristics and enterprise risk management (ERM) on stock price synchronicity (SYNCH).
Design/methodology/approach
Based on a sample of 437 US-based firms over the period 2010 to 2017, the current study uses fixed-effect and ordinary least square to test the formulated hypotheses. Majority of the sample firms are based on the S&P 500 index. This study also performs a battery of robustness checks.
Findings
The authors find that overall female members and female financial experts and female chairpersons of the AC are negatively associated with SYNCH. Similarly, the study endorses the monitoring role of financial experts and the diligence of the AC (threshold of four annual meetings), as both are negatively associated with SYNCH. However, the authors find that the AC chaired by the financial expert is also negative but insignificantly associated with SYNCH. Finally, the study finds that ERM is also negatively linked with SYNCH.
Practical implications
The findings of the current study offer some important policy implications. For instance, the shareholders can benefit from the monitoring abilities of women and financial experts by increasing their ratio in the AC. The study also offers some useful insights regarding the financial experts and chair of the AC and ERM.
Originality/value
The current study examines the association of AC characteristics with SYNCH, while the prior literature only assesses the impact of various board characteristics (such as size, independence and gender diversity). The study also contributes to the literature of ERM by providing new insights on the influence of the presence of ERM framework/program on SYNCH.
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Radwan Hussien Alkebsee, Gao-Liang Tian, Muhammad Usman, Muhammad Abubakkar Siddique and Adeeb A. Alhebry
This study aims to investigate whether the presence of female directors on audit committees affects audit fees in Chinese listed companies. This study also investigates whether…
Abstract
Purpose
This study aims to investigate whether the presence of female directors on audit committees affects audit fees in Chinese listed companies. This study also investigates whether the audit committee’s gender diversity moderates the relationship between the firm’s inherent situational factors (e.g. audit complexity and firm risk) and audit fees. Finally, this study investigates whether the effect of the audit committee’s gender diversity on audit fees varies with within-country institutional contingencies (e.g. state-owned enterprises [SOEs] vs non-SOEs and firms that are located in more developed regions vs firms that are located in less developed regions)
Design/methodology/approach
This study used the data of all A-share listed companies on the Shanghai and Shenzhen stock exchanges for the period from 2009 to 2015. The authors use ordinary least squares regression as a baseline methodology, along with firm fixed effect, Deference in Deference method, two-stage least squares regression, two-stage Heckman model and generalized method of moments models to control for the possible issue of endogeneity.
Findings
The study’s findings suggest that the presence of female directors on the audit committee improves internal monitoring and communication, which reduce the perceived audit risk and the need for assurances from external auditors. The results also suggest that female directors demand high-quality audits and further assurance from external auditors when the firm is more complex and riskier. In addition, the results suggest that within-country, institutional factors play significant role in shaping the governance role of gender-diverse audit committee.
Practical implications
The study contributes to the agency theory by providing evidence that the interaction between agency theory and corporate governance “board composition” generates an effective monitoring mechanism and contributing to the institutional theory by finding that role of female directors on audit committee varies from context to another. In addition, this study contributes to literature review of gender diversity in the boardroom by finding the economic benefit of having female directors on audit committee. Finally, this study has implications for policy-makers in promoting regulations to legalize women presence on the board, to external auditors in assessing control risk during planning the audit, to those who responsible for appointing audit committee members.
Originality/value
The authors extend earlier studies by providing novel evidence on the relationship between gender-diverse audit committees and audit fees in terms of both the supply- and demand-side perspectives; that female directors moderate the relationship between firm inherent situational factors (e.g. audit complexity and firm risk) and audit fees; and that the effect of audit committees’ gender diversity on audit fees varies with sub-national institutional contingencies.
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Kachouri Maali, Riguen Rakia and Mouakhar Khaireddine
The purpose of this paper is to investigate the direct and indirect links between corporate governance and sustainability performance using corporate social responsibility.
Abstract
Purpose
The purpose of this paper is to investigate the direct and indirect links between corporate governance and sustainability performance using corporate social responsibility.
Design/methodology/approach
The study is based on a sample consisting of 300 UK firms over the 2005–2017 period. This study applied structural equations models that specify both a direct and an indirect link between corporate governance and sustainability performance.
Findings
The authors find that corporate governance has a positive effect on sustainability performance. In addition, this study shows that corporate social responsibility fully mediates the relationship between corporate governance and sustainability performance in UK firms.
Practical implications
This study shows that firms are invited to engage more in sustainability performance and corporate social responsibility activities, which reduces agency conflicts between managers and shareholders.
Originality/value
To the authors’ knowledge, no research studies examined empirically the direct and indirect relationship between corporate governance and sustainability performance. Therefore, the main contribution of this research is to show how corporate governance effectiveness leads to higher corporate social responsibility level and sustainability performance using two analyses methods (mediator analysis and multiple mediator analysis).
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Ana B. Hernández-Lara and Juan P. Gonzales-Bustos
Boards of directors of large companies all over the world frequently have a certain number of shared directors, which can be motivated by social structures that foster different…
Abstract
Purpose
Boards of directors of large companies all over the world frequently have a certain number of shared directors, which can be motivated by social structures that foster different types of links, including investments and vertical relationships. The purpose of this paper is to identify the effects that board interlocking exerts on innovation, considering the different nature of shared directors that finally determines the type of links dominating the boards.
Design/methodology/approach
Panel regression analyses were conducted using data collected from 69 Spanish listed innovative sector companies during the period 2010–2014, which provided an unbalanced panel of 325 data observations.
Findings
The results suggested that the typology of interlocks determined their effects on innovation, which had a positive influence when independent and extra-industry directors held multiple directorships, whereas it was negative in the case of intra-industry and women interlocking directors.
Practical implications
This study provided evidence for the diverse effects of interlocking directorates and contributed to the open debate on the best board composition for improving business innovation, considering the common feature of shared directorships.
Originality/value
The value of this research was twofold. On the one hand, the study considered a wide typology of interlocking directorates, such as women, affiliated and independent directors, intra- and extra-industry directorships, as well as shared directors from the same country. On the other hand, the effects of these different interlocking directorate typologies were analysed on innovation by considering different innovation indicators.
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Candida Bussoli, Danilo Conte and Marco Barone
This study intends to test the relationship between banks’ board diversity, detected with age and gender characteristics, and banks’ social performance. The resource dependence…
Abstract
Purpose
This study intends to test the relationship between banks’ board diversity, detected with age and gender characteristics, and banks’ social performance. The resource dependence theory posits that board diversity is a strategic tool able to enrich the board of directors by expanding skills and the number of links with stakeholders, which have a strategic role in achieving a competitive advantage and sustainable goals, especially in the banking sector.
Design/methodology/approach
The research hypotheses are tested using a sample of 46 European banks observed from 2009 to 2017. The gender and age diversity data of bank board members are hand-collected from banks’ social reports.
Findings
The empirical results show that bank social performance is positively influenced by board gender and age diversity. Thus, the human capital determined by a higher bank’s board diversity constitutes an essential resource for adopting more sustainable business models.
Originality/value
This paper analyses the association between board diversity and social performance, providing empirical evidence for the European banking sector in the period after the 2008 global financial crisis. The banking literature provides scarce evidence on the topic; however, the empirical results claim the strategic importance of the appointment of directors to the banks’ boards to balance corporate strategy with social and environmental issues generating a positive impact on sustainable growth.
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Pierluigi Rippa, Giovanni Landi, Silvia Cosimato, Lorenzo Turriziani and Mohamed Gheith
Over the last decades, the importance of entrepreneurial education (EE) for the personal development of young generations has gained momentum among policymakers, practitioners and…
Abstract
Purpose
Over the last decades, the importance of entrepreneurial education (EE) for the personal development of young generations has gained momentum among policymakers, practitioners and scholars. This paper offers some insights into the way T-shaped PhD programs can trigger transdisciplinary abilities of STEM students, making them even more ready toward venturing activities.
Design/methodology/approach
To achieve the purpose of the study, the effectiveness of a new T-shaped doctoral model was explored, testing it on a sample of STEM PhD students at Polytechnic School of University of Naples Federico II, using a qualitative-quantitative approach.
Findings
The results prove the positive influence that the T-shaped PhD program has on students in terms of vertical skills and horizontal capabilities attainment for entrepreneurial readiness.
Practical implications
This study advances interesting managerial and policy implications for activating virtuous collaborations to better respond to the need of current socioeconomic scenarios through academic knowledge.
Originality/value
Despite the growing relevance of EE, research about its influence at PhD level and the effect of different pedagogical methods remains scarce and controversial. Thus, this research explores if EE can support PhD students in science and technology transdisciplinarity terms of innovation management.
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Sónia Silva, Armando Silva and Ricardo Bahia Machado
Using, for the first time, a sample of European listed firms from 30 countries with different legal regimes of board-level employee representation (BLER), the purpose of this…
Abstract
Purpose
Using, for the first time, a sample of European listed firms from 30 countries with different legal regimes of board-level employee representation (BLER), the purpose of this paper is to examine the impact of BLER on firms’ value of European public companies, where employee representation is voluntary or imposed by law depending on the country of origin.
Design/methodology/approach
Using a difference-in-differences approach and a matching procedure, the authors analyze the impact of BLER on firms' value.
Findings
The results of this paper suggest that BLER adopted voluntarily affects positively firms’ value comparing to a group of firms where employee representation is in some way mandatory. Moreover, the findings of this paper show that firms from countries where BLER is not imposed by law tend to pay higher dividends. Nevertheless, the evidence presented in this paper only holds for low levels of employee representation on the board.
Research limitations/implications
This research not only provides some evidence in favor of the codetermination on corporate governance but also offers new avenues for discussing the conditions necessary for codetermination to be effective, especially the level of employees' participation on board.
Practical implications
This study provides to policymakers new insights for them to gain perspective, analyze and decide if codetermination is a useful tool to improve firms’ performance or at least in what conditions it should be applied.
Social implications
This study incentives the discussion of the proper way to include workers in firms’ boards with expected benefits on firms’ performance, economies and societies.
Originality/value
This paper provides evidence of a positive (but limited) impact on firms’ value derived from voluntary codetermination.
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Jorge Moreno-Gómez and Jonathan Calleja-Blanco
The purpose of this paper is to analyze, in the Colombian developing context, the relationship between the presence of women in corporate positions and the financial performance…
Abstract
Purpose
The purpose of this paper is to analyze, in the Colombian developing context, the relationship between the presence of women in corporate positions and the financial performance of the company and to know if there are differences between family and non-family firms.
Design/methodology/approach
Building on the contingency theory of leadership, which emphasizes that leader’s personality and the situation in which that leader operates influences corporate decision-making, the authors use panel data models on a sample of 54 Colombian public businesses for the period 2008-2015 to test the proposed hypotheses on the relationship between women´s presence in corporate governance positions and financial performance, as well as the difference between family and non-family firms.
Findings
The results support that women´s presence in corporate governance positions is positively associated with firm performance. More concretely, the authors find a relationship between women at the top corporate governance structure (as part of the board of directors, top management team and chief executive officer) and firm profitability. Results also indicate that family business, as a type of organization, (negatively) moderates the positive relationship between female participation in top executive positions (board and top executive team) and firm performance.
Research limitations/implications
First, this study is limited to women in corporate positions in large companies listed on the Colombia Stock Exchange, and thus, generalizability for smaller entities may be limited. Second, data limitations do not allow us to investigate ways in which women’s presence in corporate governance structures contributes to improve firm goals.
Practical implications
The authors provide support to the hypothesis that positively relates women’s presence in corporate governance positions and firm performance for the case of Colombia. This serves as a guidance to Colombian regulators, corporate decision-makers and policy-makers to promote the inclusion of women in top hierarchical structures through either mandatory laws or recommendation.
Originality/value
Few studies have addressed the women´s presence in corporate governance positions and contribution to firm performance in developing economies. This study contributes to better understand how women impact performance in contexts where women are underrepresented in corporate governance structure and where there are no laws that pressure firms to appoint women in corporate governance positions.
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