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Open Access
Article
Publication date: 26 August 2024

Sarath Radhakrishnan, Joan Calafell, Arnau Miró, Bernat Font and Oriol Lehmkuhl

Wall-modeled large eddy simulation (LES) is a practical tool for solving wall-bounded flows with less computational cost by avoiding the explicit resolution of the near-wall…

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Abstract

Purpose

Wall-modeled large eddy simulation (LES) is a practical tool for solving wall-bounded flows with less computational cost by avoiding the explicit resolution of the near-wall region. However, its use is limited in flows that have high non-equilibrium effects like separation or transition. This study aims to present a novel methodology of using high-fidelity data and machine learning (ML) techniques to capture these non-equilibrium effects.

Design/methodology/approach

A precursor to this methodology has already been tested in Radhakrishnan et al. (2021) for equilibrium flows using LES of channel flow data. In the current methodology, the high-fidelity data chosen for training includes direct numerical simulation of a double diffuser that has strong non-equilibrium flow regions, and LES of a channel flow. The ultimate purpose of the model is to distinguish between equilibrium and non-equilibrium regions, and to provide the appropriate wall shear stress. The ML system used for this study is gradient-boosted regression trees.

Findings

The authors show that the model can be trained to make accurate predictions for both equilibrium and non-equilibrium boundary layers. In example, the authors find that the model is very effective for corner flows and flows that involve relaminarization, while performing rather ineffectively at recirculation regions.

Originality/value

Data from relaminarization regions help the model to better understand such phenomenon and to provide an appropriate boundary condition based on that. This motivates the authors to continue the research in this direction by adding more non-equilibrium phenomena to the training data to capture recirculation as well.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 34 no. 8
Type: Research Article
ISSN: 0961-5539

Keywords

Abstract

Details

Transgender and Non-binary Prisoners' Experiences in England and Wales
Type: Book
ISBN: 978-1-80071-045-0

Book part
Publication date: 27 September 2024

Christopher W. Mullins

This chapter examines the explosion in International Humanitarian Law between the US Civil War and World War I. The primary foci are the Hague Conventions on land warfare and the…

Abstract

This chapter examines the explosion in International Humanitarian Law between the US Civil War and World War I. The primary foci are the Hague Conventions on land warfare and the Geneva Conventions for the sick and wounded. This body of treaties is the foundation of IHL and the modern laws of war. Most of central issues in the international laws of war emerge in this period.

Article
Publication date: 30 May 2024

Ndiaga Niasse and Demba Kane

The purpose of this paper is to explore practices of Territorial-HRM within a network of shoemakers characterized by informal activities.

Abstract

Purpose

The purpose of this paper is to explore practices of Territorial-HRM within a network of shoemakers characterized by informal activities.

Design/methodology/approach

Territorial-HRM is a relatively new topic in management sciences, hence a qualitative methodology has been conducted for better exploration. The methodology relies on the development of two series of semi-structured interviews conducted with several members of the network. Data were collected and analyzed based on the thematic analysis method.

Findings

Results show a type of Territorial-HRM that stands out from that of the formal territorial networks largely described in the literature in management sciences. This form of Territorial-HRM is characterized by the following specific practices: Territorial Based Recruitment (TBR), External Mobility, Labor Loan, Inter-Boss Training and Collective Learning.

Research limitations/implications

This study relies on a single research method with a relatively small number of interviews within an informal network in the Senegalese context. The authors recommend replicating the study in other contexts and developing representative samples in order to test or measure the relationships between grounded concepts of Informal Territorial-HRM.

Originality/value

These results reveal a quite different dynamic of the emergence of Territorial-HRM due to the specificity of the network, its informal nature and its socio-cultural anchorage. The paper adds strong enrichment to the Territorial-HRM field of research by laying out its foundation both in Informal Territorial Networks and in the English speaking academic world.

Details

Journal of Management Development, vol. 43 no. 4
Type: Research Article
ISSN: 0262-1711

Keywords

Article
Publication date: 18 November 2024

Animesh 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.

Details

Engineering Computations, vol. 42 no. 1
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 15 January 2024

Christoph Barmeyer and Tobi Rodrigue

This paper aims to study historical intercultural transfer by examining the case of the Mouvement Desjardins, a Quebec, Canada-based cooperative bank founded in 1900 by Alphonse…

Abstract

Purpose

This paper aims to study historical intercultural transfer by examining the case of the Mouvement Desjardins, a Quebec, Canada-based cooperative bank founded in 1900 by Alphonse Desjardins. The aim of the cooperative was to support the hitherto marginalized French–Canadian population and to initiate their economic and entrepreneurial activities.

Design/methodology/approach

The authors focus on a historical single-case analysis. This conducts them to analyse primary data from letters exchanged between Alphonse Desjardins and European actors, as well as company documents of the Groupe Desjardins.

Findings

The intercultural transfer of the cooperative bank model and its implementation in North America as a successful, self-sustaining model is owing to recontextualization and strategic decisions of the social entrepreneur Alphonse Desjardins based on intensive written correspondence with European bank directors who promoted the cooperative system.

Research limitations/implications

This research instigates an impulse to extend our knowledge of intercultural transfer by looking into other historical cases to provide validation or add subtleties to our understanding of intercultural transfer dynamics.

Originality/value

This paper expands the current understanding of intercultural transfer and its powerful influence, namely, how an implemented cooperative bank system can contribute through successful recontextualization to institutional change and societal improvements. It also provides new insights into the creation and growth of social enterprises based on shared values within communities and coordinated strategic intentions across communities.

Details

Journal of Management History, vol. 30 no. 4
Type: Research Article
ISSN: 1751-1348

Keywords

Article
Publication date: 7 November 2023

Chamari Pamoshika Jayarathna, Duzgun Agdas and Les Dawes

Despite the wide use of quantitative assessment to identify the relationship between green logistics (GL) practices and the sustainability performance (SP) of firms, results of…

Abstract

Purpose

Despite the wide use of quantitative assessment to identify the relationship between green logistics (GL) practices and the sustainability performance (SP) of firms, results of these studies are inconsistent. A lack of theoretical foundation has been cited as a potential reason for these contradictory findings. This study aims to explore the relationship between GL practices and SP qualitatively and to provide a theoretical foundation for this link.

Design/methodology/approach

Following a multi-methodology approach, the authors used the grounded theory method (GTM) to investigate perceived relationships through qualitative analysis and adopted the system thinking (ST) approach to identify causal relationships using causal loop diagrams (CLDs).

Findings

The authors identified different sustainability practices under three major categories: logistics capabilities, resource-related practices and people-related practices. This analysis showed the relationships among these practices are non-linear. Based on the results, the authors developed three propositions and introduced a theoretical foundation for the relationship between GL practices and SP.

Practical implications

Managerial personnel can use the theoretical foundation provided by this study when making decisions on GL practices adoption. This theoretical foundation suggests applying a holistic approach that can help optimize SP by selecting suitable practices. On the other hand, researchers can use a multi-methodology approach suggested by this study to explore complex social issues.

Originality/value

This study contributes to the knowledge from a methodology perspective as no previous studies have been conducted to identifying the relationship between GL practices and SP by combining GTM and ST approaches. This combination can be extended to build system dynamics models for sustainable logistics impacts bringing novelty to the research field of sustainable logistics.

Details

The International Journal of Logistics Management, vol. 35 no. 5
Type: Research Article
ISSN: 0957-4093

Keywords

Article
Publication date: 28 February 2023

Bienvenu Akowedaho Dagoudo, Natalia Vershinina and William Karani Murithi

As families engage in entrepreneurship, particularly in developing economies, women's engagement in such activities is subject to the traditional cultures, norms and values of the…

Abstract

Purpose

As families engage in entrepreneurship, particularly in developing economies, women's engagement in such activities is subject to the traditional cultures, norms and values of the communities to which they belong. This paper aims to investigate how the socio-cultural context influences women's entrepreneurship as women engage in “family entrepreneuring”.

Design/methodology/approach

The study draws on an inductive qualitative approach to explore how multiple cultural, social and economic contexts encourage women's entrepreneurship and, thus, position them at the centre of family entrepreneuring within this community. Using snowballing techniques, we analyse narratives from 51 women entrepreneurs, generated through semi-structured interviews, to reveal key insights into the practice of family entrepreneuring.

Findings

The findings reveal the complex socio-cultural context within the “Adja” community, where polygamy, a traditional and cultural practice, enables the transfer of culturally and socially embedded informal knowledge. The study explains how women's entrepreneuring activities are supported by informal in-family apprenticeships, resulting in family members learning specific skills while also experiencing the feeling of belonging to the family. Showcasing the heterogeneity of contexts, particularly those found in Africa, this study challenges the normative view within the Global North and the dominance of the “heroic male” in entrepreneurship by showcasing how women (especially matriarchs) are significant actors in training other women, co-wives, daughters and relatives in family entrepreneuring.

Originality/value

Thus, this study contributes to the extant literature on family entrepreneuring by revealing an unusual case of women from polygamous families becoming the focal actors in family entrepreneuring activity and challenging the culturally ascribed gender roles to evolve into the breadwinners in their households, as well as focusing on how this process is driven by endogenous knowledge exchange.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 30 no. 9
Type: Research Article
ISSN: 1355-2554

Keywords

Article
Publication date: 27 August 2024

Jean-Eric Pelet, Bonnie Canziani and Nic Terblanche

Teaching wine tasting online is challenging, even given the curated digital tools of the Wine and Spirit Education Trust, a highly renowned online wine certification system is…

Abstract

Purpose

Teaching wine tasting online is challenging, even given the curated digital tools of the Wine and Spirit Education Trust, a highly renowned online wine certification system is used. This paper aims to initially explore wine experts’ opinions about online wine education and subsequently examine the feasibility of customizing wine appreciation lexicons for Chinese learners.

Design/methodology/approach

A two-study multimethod approach was adopted. Study 1, a two-stage Delphi study, was conducted with 17 wine experts representing a number of countries, using a mix of closed/open-ended questions in an online survey. Data was collected in a market study in Study 2, conducted at agricultural markets in Thailand (pilot test) and China. Dialogues with market sellers were undertaken, evoking mental imagery of wine descriptors to explore the relevance of traditional versus local aromas and flavors in describing wine.

Findings

Findings concentrate on three main areas: general advantages/disadvantages of online wine education, reactions toward asynchronous/synchronous methods of wine tasting and, finally, the feasibility of customizing a wine appreciation lexicon for Chinese learners.

Originality/value

The study presents novel insights into the role of online wine education in China.

Details

International Journal of Wine Business Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1751-1062

Keywords

Article
Publication date: 14 August 2024

Athinodoros Chronis

This research aims to explore and theorize the role of embodied practices – orchestrated by service providers – in the social production of servicescapes. It is claimed that the…

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Abstract

Purpose

This research aims to explore and theorize the role of embodied practices – orchestrated by service providers – in the social production of servicescapes. It is claimed that the social character of the servicescape is shaped not only by narratives and materialities but also through the body. Bodily physical behaviors like physical movements in space, gestures, facial expressions, postures and tactile engagements with the surrounding materiality constitute a body language that conveys information and expresses meanings. In this kinetic capacity, the body becomes a building agent in the social constitution of the servicescape. As the author empirically demonstrates in the context of city tourism with diverse experiential opportunities, it is due to the body’s discriminatory orientation, walking, looking, pointing and acting in selective ways that the city emerges as a servicescape of particular kind.

Design/methodology/approach

Market-oriented ethnography was conducted in Saint Petersburg, Russia, where the author observed the guiding practices of tour guides leading international tourists during two-day city excursions.

Findings

This research identifies and unpacks three clusters of embodied practices deployed by service providers as they guide customers at the servicescape: spatializing, emplacing and regulating. The role of the body and its association with narratives and materialities is identified in each cluster.

Practical implications

A number of embodied practices are provided for use by contact employees as they guide customers in the servicescape. Specific guidelines are also offered to service providers for the strategic employment of body language, their training is navigational skills and the coordination of body, narratives and materialities.

Originality/value

This study extends current materialistic and communicative approaches on the construction of servicescapes by claiming that the servicescape in not only a physical and narrative construction but something that is also configured through the body; provides three clusters of embodied practices deployed by service providers; theorizes the intertwined nature of narratives, materiality and the body; defines servicescapes as dynamic socio-spatial entities emerging from the constant {narrative-material-body} arrangements orchestrated by service providers; and sheds light on the mediating role of the body in the social production of servicescapes.

Details

Journal of Service Theory and Practice, vol. 34 no. 6
Type: Research Article
ISSN: 2055-6225

Keywords

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