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1 – 10 of 30Luke Mizzi, Arrigo Simonetti and Andrea Spaggiari
The “chiralisation” of Euclidean polygonal tessellations is a novel, recent method which has been used to design new auxetic metamaterials with complex topologies and improved…
Abstract
Purpose
The “chiralisation” of Euclidean polygonal tessellations is a novel, recent method which has been used to design new auxetic metamaterials with complex topologies and improved geometric versatility over traditional chiral honeycombs. This paper aims to design and manufacture chiral honeycombs representative of four distinct classes of 2D Euclidean tessellations with hexagonal rotational symmetry using fused-deposition additive manufacturing and experimentally analysed the mechanical properties and failure modes of these metamaterials.
Design/methodology/approach
Finite Element simulations were also used to study the high-strain compressive performance of these systems under both periodic boundary conditions and realistic, finite conditions. Experimental uniaxial compressive loading tests were applied to additively manufactured prototypes and digital image correlation was used to measure the Poisson’s ratio and analyse the deformation behaviour of these systems.
Findings
The results obtained demonstrate that these systems have the ability to exhibit a wide range of Poisson’s ratios (positive, quasi-zero and negative values) and stiffnesses as well as unusual failure modes characterised by a sequential layer-by-layer collapse of specific, non-adjacent ligaments. These findings provide useful insights on the mechanical properties and deformation behaviours of this new class of metamaterials and indicate that these chiral honeycombs could potentially possess anomalous characteristics which are not commonly found in traditional chiral metamaterials based on regular monohedral tilings.
Originality/value
To the best of the authors’ knowledge, the authors have analysed for the first time the high strain behaviour and failure modes of chiral metamaterials based on Euclidean multi-polygonal tessellations.
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Roland Ryndzionek, Michal Michna, Filip Kutt, Grzegorz Kostro and Krzysztof Blecharz
The purpose of this paper is to provide an analysis of the performance of a new five-phase doubly fed induction generator (DFIG).
Abstract
Purpose
The purpose of this paper is to provide an analysis of the performance of a new five-phase doubly fed induction generator (DFIG).
Design/methodology/approach
This paper presents the results of a research work related to five-phase DFIG framing, including the development of an analytical model, FEM analysis as well as the results of laboratory tests of the prototype. The proposed behavioral level analytical model is based on the winding function approach. The developed DFIG model was used at the design stage to simulate the generator’s no-load and load state. Then, the results of the FEM analysis were shown and compared with the results of laboratory tests of selected DFIG operating states.
Findings
The paper provides the results of analytical and FEM simulation and measurement tests of the new five-phase dual-feed induction generator. The use of the MATLAB Simscape modeling language allows for easy and quick implementation of the model. Design assumptions and analytical model-based analysis have been verified using FEM analysis and measurements performed on the prototype. The results of the presented research validate the design process as well as show the five-phase winding design advantage over the three-phase solution regarding the control winding power quality.
Research limitations/implications
The main disadvantage of the winding function approach-based model development is the simplification regarding omitting the tangential airgap flux density component. However, this fault only applies to large airgap machines and is insignificant in induction machines. The results of the DFIG analyses were limited to the basic operating states of the generator, i.e. the no-load state, the inductive and resistive load.
Practical implications
The novel DFIG with five phase rotor control winding can operate as a regular three-phase machine in an electric power generation system and allows for improved control winding power quality of the proposed electrical energy generation system. This increase in power quality is due to the rotor control windings inverter-based PWM supply voltage, which operates with a wider per-phase supply voltage range than a three-phase system. This phenomenon was quantified using control winding current harmonic analysis.
Originality/value
The paper provides the results of analytical and FEM simulation and measurement tests of the new five-phase dual-feed induction generator.
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Qurat-ul-Ain Burhan, Muhammad Asif Khan and Muhammad Faisal Malik
This study aims to identify the impact of ethical leadership on ethical voice by determining two paths covering relational identification and psychological safety. The first path…
Abstract
Purpose
This study aims to identify the impact of ethical leadership on ethical voice by determining two paths covering relational identification and psychological safety. The first path focused on relational identification and psychological safety. Alternatively, the second path focused on organizational identification and psychological ownership leading to ethical voice. The specific objective of the study is to develop and test an integrated model of ethical leadership.
Design/methodology/approach
The objectives were achieved through the adoption of quantitative research techniques. Two hundred forty-eight samples were collected from the banking sector using quantitative research techniques, and data was gathered through a self-administrated questionnaire. Exploratory and confirmatory factor analyses were used through AMOS to generate the results and test hypotheses.
Findings
The results suggested a significant impact of ethical leadership on ethical voice, while the other paths’ results, such as relational identification, psychological safety, organizational identification and psychological ownership, suggested partial mediation. The study result adds new insights into ethical leadership and social exchange theory since it tested overlooked paths in the literature, such as relational identification and psychological safety.
Research limitations/implications
The research highlights the significance of ethical voice as a desirable organizational behavior. Ethical voice contributes to a culture of accountability, transparency and ethical decision-making. Organizations should establish channels and platforms for employees to voice ethical concerns and suggestions. This may involve regular feedback sessions, anonymous reporting mechanisms and protection policies for whistleblowers. Leaders should actively encourage and value ethical voices as a valuable contribution to the ethical climate of the organization.
Practical implications
The study found that ethical leaders influence their followers in such a way that they adopt ethical behavior. It is also validated that organizational ethics are shared by employees who interact with ethical leaders. So, departments should train such leaders because ethical leadership positively affects followers’ attitudes and behaviors, and organizations should encourage ethical behavior in supervisors and subordinates. The study also found that relational and organizational identification helps employees develop psychological capabilities, which leads to reporting workplace misconduct. The current study tested these mechanisms collectively and found that ethical leadership significantly contributes to ethical voice.
Social implications
The current study highlighted the role of ethical leaders in promoting ethical behavior, improving employee well-being and engagement, cultivating collaboration and inclusion, and making a contribution to the overall ethical climate within organizations and society as a whole. Organizations can have a positive impact on the social fabric by cultivating a culture of ethics, respect and social responsibility if they make these considerations their top priorities.
Originality/value
The current study is unique since it is intended to develop and test an integrated model of ethical leadership and ethical voice. This research combines an integrated model, focusing on employees’ identities and self-concepts and examining ethical voice as a behavioral outcome.
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Karolina Parding, Maria Ek Styvén, Frida Lindström and Anna Näppä
This paper aims to focus on conditions for workplace learning (WPL) in highly transient workplaces, exemplified by the tourism and hospitality sector in the Arctic region. The aim…
Abstract
Purpose
This paper aims to focus on conditions for workplace learning (WPL) in highly transient workplaces, exemplified by the tourism and hospitality sector in the Arctic region. The aim is to analyse and discuss how employees and employers view the conditions for employees’ WPL from their respective perspectives.
Design/methodology/approach
The study is based on a qualitative approach. Ten interviews with employers and ten interviews with employees were carried out. This opens for different perspectives, including identifying “learning gaps”. The analysis was thematic, with a focus on opportunities and challenges for WPL in these transient workplace contexts.
Findings
Overall, conditions for WPL seem unsatisfactory. On the one hand, both employees and employers see WPL as essential for staff retention. Employers also see WPL as a strategy for business development and, thus, profit. On the other hand, high staff turnover makes it challenging to strategically invest in and organize for WPL, especially formal learning. Hence, a Catch-22 situation emerges.
Research limitations/implications
As this study is qualitative in its scope, generalizations are analytical rather than statistical.
Originality/value
There is a shortage of studies on conditions for WPL, focusing particularly on transient workplaces. Moreover, by including employer and employee perspectives, the authors contribute to a gap in the literature. The empirical contribution of this paper thus lies in using a theoretical WPL framework on transient workplaces, exemplified by the tourism and hospitality industries in the Arctic region.
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This research aims to investigate the symbiotic relationship between work and family life among doctors in India, with a focus on work–family…
Abstract
Purpose
This research aims to investigate the symbiotic relationship between work and family life among doctors in India, with a focus on work–family enrichment (WFE) as a positive interplay. The study seeks to examine the impact of two aspects of WFE, namely, work-to-family enrichment (WTFE) and family-to-work enrichment (FTWE) on job satisfaction (JS) and life satisfaction (LS), while exploring the mediating role of self-efficacy (SE).
Design/methodology/approach
The research employs a comprehensive survey to gather data from Indian doctors. The survey includes measures of WTFE, FTWE, JS, LS and SE. Structural equation modeling (SEM) was employed to examine the proposed connections among the research constructs, using IBM AMOS v.23.
Findings
The findings reveal that WTFE significantly impacts both JS and LS. However, FTWE does not show a direct influence on JS, though it does positively impact LS. SE plays a noteworthy role, having a strong direct influence on both job and life satisfaction. In terms of indirect influence, WTFE impacts job and life satisfaction through the mechanism of SE. Nevertheless, no significant indirect effect was found between FTWE and both types of satisfaction through SE.
Originality/value
This research presents several original contributions to the study of work–life balance among healthcare professionals. Firstly, its unique geographic focus on North India distinguishes it from existing literature, offering fresh insights into the experiences of doctors in this region. Moreover, the study's multifaceted examination of WFE, SE, JS, and LS introduces a comprehensive perspective seldom seen in current research.
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This article addresses recent calls in the literature for advancing our understanding of public affairs consultants and their role conceptions. By testing and further exploring…
Abstract
Purpose
This article addresses recent calls in the literature for advancing our understanding of public affairs consultants and their role conceptions. By testing and further exploring self-perceptions of public affairs consultants the study aims to offer new insight into how consultants define and view their occupational role.
Design/methodology/approach
The study draws on a nationwide survey with public affairs consultants in Sweden.
Findings
Four main role conceptions were identified (advocate, do-gooder, expert and intermediary). Further, the study tests how personal and professional characteristics correlate with different role conceptions, by viewing professional experience and consultants' selection of clients. Data also suggest that consultants' background in politics does not promote any specific role perception. Finally, the findings also show that how consultants choose clients is a divider in the industry, where some act as passive intermediaries while other take a more active role in their choice of clients.
Originality/value
The findings enhance our understanding of public affairs as a field, and specifically about the modelling of professional roles amongst consultants. The empirical results in this study show how contemporary role typologies needs to be extended to better capture the specificities of consultants' roles in public affairs. By addressing the issue of how consultants choose clients the study engages with the complex debate of whether consultants ought to act as objective or subjective agents and hence join the conversation on ethics in public affairs.
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Douglas Aghimien, Clinton Ohis Aigbavboa, Wellington Didibhuku Thwala, Nicholas Chileshe and Bhekinkosi Jabulani Dlamini
This paper presents the findings of assessing the strategies required for improved work-life balance (WLB) of construction workers in Eswatini. This was done to improve the…
Abstract
Purpose
This paper presents the findings of assessing the strategies required for improved work-life balance (WLB) of construction workers in Eswatini. This was done to improve the work-life relationship of construction workers and, in turn, improve the service delivery of the construction industry in the country.
Design/methodology/approach
The study adopted a quantitative research approach using a questionnaire administered to construction professionals in the country. The data gathered were analysed using frequency, percentage, Mann–Whitney U test, exploratory and confirmatory factor analysis (CFA).
Findings
The findings revealed that the level of implementation of WLB initiatives in the Eswatini construction industry is still low. Following the attaining of several model fitness, the study found that the key strategies needed for effective WLB can be classified into four significant components, namely: (1) leave, (2) health and wellness, (3) work flexibility, and; (4) days off/shared work.
Practical implications
The findings offer valuable benefits to construction participants as the adoption of the identified critical strategies can lead to the fulfilment of WLB of the construction workforce and by extension, the construction industry can benefit from better job performance.
Originality/value
This study is the first to assess the strategies needed for improved WLB of construction workers in Eswatini. Furthermore, the study offers a theoretical platform for future discourse on WLB in Eswatini, a country that has not gained significant attention in past WLB literature.
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The aim of this paper is to explore the evolving nature of the work of cabin crew in a Scandinavian carrier in three eras, drawing on theories of gender and emotional labour.
Abstract
Purpose
The aim of this paper is to explore the evolving nature of the work of cabin crew in a Scandinavian carrier in three eras, drawing on theories of gender and emotional labour.
Design/methodology/approach
The paper draws on ethnographic data from fieldwork, interviews and documents.
Findings
From being a feminized and temporary occupation for young, upper- and middle-class women in the 1970s, the occupation became a full-time job and with greater diversity of cabin crew. Today there are signs of the job becoming a precarious and temporary one of demanding and devalorized work in a polarized and class-divided labour market. Changing circumstances impact on the emotional labour requirement and terms and conditions at work.
Research limitations/implications
A limitation is that the research design was not initially longitudinal in the sense that the author does not have exactly the same kind of data from each era. The author has, however, been involved in this field for two decades, used multiple methods and interacted with different stakeholders and drew on a unique data material.
Practical implications
The development in aviation is contributing to new discriminatory practices, driving employee conditions downwards and changing the job demands. This development will have practical consequences for the lives and families of cabin crew.
Social implications
The analysis illustrates how work ‘constructs' workers and contributes in creating jobs that are not sustainable for the employees. Intensification of work, insecurity and tougher working conditions also challenge key features in the Nordic model such as proper pay, decent work and a life-long employment. Much indicates that the profession is again becoming a temporary one of demanding work with poor working conditions in a polarized and class-divided labour market.
Originality/value
The research contributes to the literature on emotional labour, gender and the evolving nature of the work of cabin crew. The unique data material, the longitudinal aspect of the research and the focus on a single network carrier are good in charting changes over time.
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Aleksandra Hauke-Lopes, Milena Ratajczak-Mrozek and Marcin Wieczerzycki
The purpose of this paper is to investigate how digital transformation changes highly traditional business processes and how it impacts value co-creation and co-destruction. More…
Abstract
Purpose
The purpose of this paper is to investigate how digital transformation changes highly traditional business processes and how it impacts value co-creation and co-destruction. More specifically, the aim is to examine, using the resource interaction approach, how the friction between non-digital and digital resources affects the co-creation and co-destruction of value in a network during digital transformation. Based on this, the authors provide managerial implications on how to handle simultaneous digital and traditional business processes to co-create value during digital transformation.
Design/methodology/approach
A case study is conducted of a digital platform provider and of three traditional confectioneries. In this analysis, the authors looked at the business processes of highly traditional confectioneries that have introduced online services through a digital platform and are undergoing digital transformation.
Findings
In some industries, it is neither possible nor advisable to fully digitalise all business processes, and companies have to partially retain their traditional, analogue character to create value. The process of value co-creation during digital transformation is affected by friction between the digital and non-digital resources and is mitigated by specific lubricants (e.g. mutual reliance, smooth personal communication, willingness to help, attitude towards change). This results in the improvement of processes and capabilities in terms of digital development and traditional production. Friction may also lead to value co-destruction, for example, as the result of transformation from face-to-face to digital interactions.
Originality/value
The authors contribute to research on the digital transformation of highly traditional companies that need to introduce new, digital technologies and resources while continuing their traditional processes. The authors develop the concept of lubricants that mitigate the friction between resources and, therefore, facilitate value co-creation in a business network. Additionally, the authors provide managerial implications for how to handle simultaneous digital and traditional business processes during digital transformation.
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Claire O'Neill, Mary Brigid McCarthy, Seamus O'Reilly and Frode Alfnes
Sustainability challenges are omnipresent. This study aims to identify consumer segments based on food consumption practices from purchasing to disposal. A priori work identified…
Abstract
Purpose
Sustainability challenges are omnipresent. This study aims to identify consumer segments based on food consumption practices from purchasing to disposal. A priori work identified quality attributes, food responsibility, dietary choices and food organisation and management within the home as key influences. Each represents an opportunity for consumers to employ more sustainable food behaviours. A priori work identified several indicators for each of these influences. This study explored the suitability of these indicators for measuring the identified key influences.
Design/methodology/approach
The authors used an online survey of 324 Irish food consumers in January 2021 to address online food interests, purchasing preferences and purchase behaviour linked to food sustainability.
Findings
The authors identify four consumer segments – food dabblers, food appreciators, pro-sus and pressured – which present a holistic view of the sustainable behaviours practiced by food consumers. The findings provide insight into the range of sustainability-related food behaviours actioned by consumers – from interest in meat-free products, organics and local produce to having an organised stock at home and minimising waste. The findings shed light on how consumers integrate elements of sustainability into their food lifestyles.
Originality/value
This study captures sustainability-related food behaviours from the point of purchase through to consumption and disposal and identifies four new consumer segments based on interests, preferences and behaviours.
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