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1 – 6 of 6Animesh Patari, Shantanu Pramanik and Tanmoy Mondal
The present study scrutinizes the relative performance of various near-wall treatments coupled with two-equation RANS models to explore the turbulence transport mechanism in terms…
Abstract
Purpose
The present study scrutinizes the relative performance of various near-wall treatments coupled with two-equation RANS models to explore the turbulence transport mechanism in terms of the kinetic energy budget in a plane wall jet and the significance of the near-wall molecular and turbulent shear, to select the best combination among the models which reveals wall jet characteristics most efficiently.
Design/methodology/approach
A two-dimensional steady incompressible plane wall jet in a quiescent surrounding is simulated using ANSYS-Fluent solver. Three near-wall treatments, namely the Standard Wall Function (SWF), Enhanced Wall Treatment (EWT) and Menter-Lechner (ML) treatment coupled with Realisable, RNG and Standard k-e models and also the Standard and Shear-Stress Transport (SST) k-ω models are employed for this investigation.
Findings
The ML treatment slightly overestimated the budget components on an outer scale, whereas the k-ω models strikingly underestimated them. In the buffer layer at the inner scale, the SWF highly over-predicts turbulent production and dissipation and k-ω models over-predict dissipation. Appreciably accurate inner and outer scale k-budgets are observed with the EWT schemes. With a sufficiently resolved near-wall mesh, the Realisable model with EWT exhibits the mean flow, turbulence characteristics and turbulence energy transport even better than the SST k-ω model.
Originality/value
Three distinct near-wall strategies are chosen for comparative performance analysis, focusing not only on the mean flow and turbulence characteristics but the turbulence energy budget as well, for finding the best combination, having potential as a viable and low-cost alternative to LES and DNS for wall jet simulation in industrial application.
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Leona Wiegmann, Annemarie Conrath-Hargreaves, Zhengqi Guo, Matthew Hall, Ralph Kober, Richard Pucci, Paul J. Thambar and Tirukumar Thiagarajah
The use of interviews for data collection is prevalent in qualitative accounting research. This paper examines vignettes – sketches of hypothetical scenarios – as a promising…
Abstract
Purpose
The use of interviews for data collection is prevalent in qualitative accounting research. This paper examines vignettes – sketches of hypothetical scenarios – as a promising complementary way to conduct interviews in qualitative accounting research.
Design/methodology/approach
The paper is based on our experiences designing and using vignettes in five separate qualitative accounting studies, which collectively involve over 200 interviews with various participants. It discusses the opportunities the use of vignettes in interviews offers to qualitative accounting research, as well as the challenges associated with designing and using vignettes. The paper also reflects on fellow researchers’ varied reactions during seminars, workshops, and the journal review process.
Findings
Vignettes emerge as a productive and engaging complementary way for accounting researchers to obtain additional insights and perspectives not usually accessible in semi-structured interviews. The paper also provides practical insights into developing, using and publishing qualitative accounting studies using vignettes, contributing an additional behind-the-scenes view of using qualitative research methods.
Originality/value
The aim of this paper is to increase awareness of vignettes as a complement to the standard qualitative accounting interview. It provides guidance on how vignettes might be used productively for studying rare, new, emerging, complex, or multi-period real-world accounting phenomena. It also discusses how vignettes can promote transparency, honesty, and a greater level of detail in participants’ responses, as well as facilitate the involvement of lay people in accounting studies.
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Benonia Tinarwo, Farzad Rahimian and Dana Abi Ghanem
The aim of this paper is to discuss a selection of policy strategies, regional initiatives and market approaches to uncover the realities of twenty-first-century building energy…
Abstract
Purpose
The aim of this paper is to discuss a selection of policy strategies, regional initiatives and market approaches to uncover the realities of twenty-first-century building energy performance. A position that market-based approaches, human influence and policy interventions are part of an ecosystem of building energy performance is presented.
Design/methodology/approach
An exploratory search of secondary sources spanning the last three decades was conducted. Both peer-reviewed and grey literature were included to capture a broader understanding of the discourse in literature. Research questions guided the literature search, and a data extraction tool was designed to categorise the literature. The primary limitation of this study is that only a few applications could be discussed in a condensed format.
Findings
Several challenges about the current status quo of building energy performance were identified and summarised as follows. (1) Inconsistencies in measurement and verification protocols, (2) Impacts of market approaches, (3) National policy priorities that are at variance with regional targets and (4) Ambiguous reporting on environmental impacts of energy efficiency (EE) technologies.
Practical implications
The practical implications of the findings in this paper for practice and research are that as part of the building energy performance ecosystem, national responses through government interventions must become adaptive to keep up with the fast-paced energy sector and social trends. Simultaneously, before market-based approaches overcome the messiness of socio-economic dynamics, institutional conditions and cultural nuances, they ought to transparently address environmental impacts and the infringement of several SDGs before they can become viable solutions to building energy performance.
Originality/value
This paper presents building energy performance as an ecosystem comprising human influence, market-based approaches and policy interventions which form interdependent parts of the whole. However, evidence in the literature shows that these aspects are usually investigated separately. By presenting them as an ecosystem, this paper contributes to the discourse by advocating the need to re-align building energy performance to socio-economic-political dynamics and contextually viable solutions.
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E. Woo, Margaret Wooldridge and Elizabeth Ann LaPorte
The purpose of this study was to evaluate the effectiveness of sustainability-focused, cocurricular, interdisciplinary programming for graduate students at creating future leaders…
Abstract
Purpose
The purpose of this study was to evaluate the effectiveness of sustainability-focused, cocurricular, interdisciplinary programming for graduate students at creating future leaders in sustainability, i.e. did interdisciplinary sustainability programming further prepared graduate students in sustainability leadership beyond the scope of the individual student academic programs from the perspective of the student participants.
Design/methodology/approach
The objective of the study was met by evaluating the University of Michigan Dow Sustainability Fellows Program. With a decade of graduate-student participation, surveys and interviews of Fellows alumni from 2013 to 2020 were used to assess the program impact on creating sustainability leaders. Opportunities for program reflections were included through prompted open-ended questions.
Findings
A majority (88%) of the Fellows who responded to the survey agreed with the statement that their career path was positively affected by their participation in the program and that the cocurricular program provided opportunities to explore sustainability-related topics from perspectives they would not have experienced otherwise. The interdisciplinary aspect of the program and the focus on practical community sustainability projects were the most valued attributes of the cocurricular programming.
Research limitations/implications
Supporting cocurricular interdisciplinary programs requires significant resources and intentionality to engage diverse disciplines and diverse partner organizations.
Practical implications
Programs that provide experiential opportunities to build interdisciplinary team skills successfully enable graduate students to become leaders in sustainability fields in the workplace and in outreach and service.
Social implications
Cocurricular graduate student programming focused on community sustainability projects can successfully create valued learning experiences while simultaneously supporting communities with practical solutions to sustainability challenges.
Originality/value
To the best of the authors’ knowledge, this work is the first longitudinal assessment of the effectiveness of the interdisciplinary cocurricular programming on graduate student sustainability leadership outcomes. The results include feedback received from eight years of cocurricular programming.
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Wolfgang Aschauer and Roman Egger
This study attempts to answer how values and holiday preferences were shaped by the pandemic, how travellers view the future of tourism and how they are willing to contribute to…
Abstract
Purpose
This study attempts to answer how values and holiday preferences were shaped by the pandemic, how travellers view the future of tourism and how they are willing to contribute to potential changes. Furthermore, it examines the impact of socio-structural background factors, basic values and holiday preferences, and pandemic-related factors on the views of post-pandemic tourism.
Design/methodology/approach
A longitudinal online survey was conducted in which 155 frequent travellers were interviewed both before and during the pandemic about their values and holiday preferences, attitudes towards travelling during the pandemic, and their prospective views regarding tourism.
Findings
The findings revealed that values remained rather stable, but nature experiences, heritage tourism and beach offers gained more relevance when it came to holiday preferences. Concerning travellers’ expectations of future tourism, environmental concern was ranked higher than economic profit. However, those striving for self-direction, stimulation and city tourism offers stated to be less willing to restrict their travel behaviour in the future.
Research limitations/implications
Although our study is just based on a convenience sample, the authors were still able to address notable research gaps. First, because a longitudinal design was selected, it was possible to investigate any potential transitions in basic values and travel style and trace these changes back to the pandemic. Second, thanks to a sophisticated online survey, all concepts could be measured with well-developed scales, which increased the quality of the measurements and led to stable results. Third, young travellers can be considered proponents of future travel styles. Their way of acting and thinking about future tourism could significantly impact the prospective direction of tourism.
Practical implications
This study makes a valuable contribution to changing holiday preferences and provides useful insights for the tourism industry about travellers’ willingness to change their travel behaviour.
Social implications
Since this study primarily considers human values and socio-structural factors, the findings are of particular interest from a sociological perspective and are also interpreted from this viewpoint.
Originality/value
This study is one of only a few longitudinal studies focusing on holiday preferences and shifting values during COVID-19 and attempting to detect crucial drivers of potential tourism transformations in terms of perceptions from the demand side.
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Visalakshy Sasikala, Venkataraman Sankaranarayanan, Deepak Dhayanithy and Geetha Mohan
This paper aims to critically examine how dual-listed multinational enterprises (MNEs) that are embedded across multiple national contexts interact with other actors to shape the…
Abstract
Purpose
This paper aims to critically examine how dual-listed multinational enterprises (MNEs) that are embedded across multiple national contexts interact with other actors to shape the diversity, equality and inclusion (DEI) narrative, outcomes and the associated dynamics of social change in the mining industry.
Design/methodology/approach
The authors use data from the publicly available sustainability reports of two global mining conglomerates with dual-listing structure, Rio Tinto and Anglo American, alongside prevalent DEI regulations in the UK, Australia and South Africa to understand how DEI discourse and practice and the corresponding role of key actors have evolved since 2015. The authors combine a case study approach with topic modelling and qualitative content analysis to critically analyse the linkage between actors’ stated posture and actions in their DEI field and their impact upon various exchange relationships within the mining industry exchange field over the period 2015–2021.
Findings
The analysis revealed three broad phases of evolution in the DEI involvement of the MNEs emphasizing on diversity, equality and inclusion, respectively. Both firms progressed at a different pace across the three phases highlighting the need for a systemic perspective when addressing DEI concerns.
Originality/value
This paper is one of the earliest to adopt an issue and exchange field perspective towards examining the complexity of DEI. Taking a critical performative stance, the authors argue that for improving convergence between MNEs’ DEI rhetoric and reality and to advance DEI in new ways organizations and policymakers must devise structural interventions in the DEI field that substantively impact MNEs’ industry exchange field relationships.
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