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Article
Publication date: 6 November 2023

Oktay Çiçek, A. Filiz Baytaş and A. Cihat Baytaş

This study aims to numerically scrutinize the entropy generation minimization and mixed convective heat transfer of multi-walled carbon nanotubes–Fe3O4/water hybrid nanofluid flow…

Abstract

Purpose

This study aims to numerically scrutinize the entropy generation minimization and mixed convective heat transfer of multi-walled carbon nanotubes–Fe3O4/water hybrid nanofluid flow in a lid-driven square enclosure with heat generation in the presence of a porous layer on inner surfaces, considering local thermal non-equilibrium (LTNE) approach and the non-Darcy flow model.

Design/methodology/approach

The dimensionless governing equations for hybrid nanofluid and solid phases are solved by applying the finite volume method and semi-implicit method for pressure-linked equations algorithm.

Findings

The roles of the internal heat generation in the porous layer, LTNE model and nanoparticles volume fraction on mixed convection phenomenon and entropy generation are introduced for lid-driven cavity hybrid nanofluid flow. Based on the investigation of entropy generation and heat transfer, the minimum total entropy generation and average Nusselt numbers are found at 1 ≤ Ri ≤ 10 where the effect of the forced and free convection flow directions being opposite each other is very significant. When considering various nanoparticle volume fractions, it becomes evident that the minimum entropy generation occurs in the case of φ = 0.1%. The outcomes of LTNE number reveal the operating parameters in which thermal equilibrium occurs between hybrid nanofluid and solid phases.

Originality/value

The analysis of entropy generation under various shear and buoyancy forces plays a significant role in the suitable thermal design and optimization of mixed convective heat transfer applications. This research significantly contributes to the optimization of design and the advancement of innovative solutions across diverse engineering disciplines, such as packed-bed thermal energy storage and thermal insulation.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 34 no. 2
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 13 February 2024

Cynthia Mejia and Katherine Wilson

The purpose of this study was to examine the global perceptions of social equity in the fine dining business model as a result of the surprise announcement for the 2024 planned…

Abstract

Purpose

The purpose of this study was to examine the global perceptions of social equity in the fine dining business model as a result of the surprise announcement for the 2024 planned closure of the Michelin three-star restaurant, Noma.

Design/methodology/approach

This study used critical discourse analysis to inductively analyze 91 source documents retrieved through a lexical database search. The analysis yielded five overarching themes and six subthemes.

Findings

Findings from this study serve as a benchmark in retrospect for capturing a rapidly accelerating global conversation from January to March 2023 around the long-term viability and social sustainability of the fine dining business model.

Research limitations/implications

Against the backdrop of labor challenges in the restaurant industry due to the Covid-19 pandemic and its aftermath, the announced closure of Noma precipitated criticism of the stage (unpaid intern) system and the intense pressures of attaining and maintaining Michelin star status.

Practical implications

Results from the discourse analysis suggest certification for fine dining restaurants, perhaps through the Michelin Guide, for demonstrating a commitment to social sustainability as a qualifier to achieve a Michelin star.

Social implications

Findings from this research reveal a palpable change in societal tolerance for a more socially sustainable fine dining restaurant business model that advances equitable solutions for its workers while assuring the economic sustainability of restaurants.

Originality/value

This study drew upon a foodscape lens to reveal a juxtaposition between well-executed environmentally sustainable initiatives in the fine dining business model and the threats to the social sustainability among its workers.

Details

International Journal of Contemporary Hospitality Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0959-6119

Keywords

Article
Publication date: 9 June 2023

Fatima Mohamed Saif Al Nuaimi, Sanjay Kumar Singh and Syed Zamberi Ahmad

This study aims to examine the relationships between organizational learning capabilities, open innovation and firm performance (FP) in the context of small and medium enterprises…

Abstract

Purpose

This study aims to examine the relationships between organizational learning capabilities, open innovation and firm performance (FP) in the context of small and medium enterprises (SMEs) in the emerging economies.

Design/methodology/approach

Data collected from 384 manufacturing SMEs operating across the seven emirates of the UAE were statistically analyzed using SmartPLS 3 to examine the hypotheses of this study.

Findings

The results show that organizational learning capabilities positively influences both inbound and outbound dimensions of open innovation (OI). Inbound open innovation (IP) practice positively impacted both market effectiveness and profitability, while outbound open innovation (OP) practice only affected profitability. Findings further confirmed the mediating role of IP practice on the relationships of organizational learning capabilities with market effectiveness and profitability. In contrast, OP practice did not mediate the relationships of organizational learning capabilities with market effectiveness and profitability.

Originality/value

To the best of the authors knowledge, this is among the first study contributing to the extant innovation literature in terms of investigations into the significant and complex interrelations of organizational learning capabilities, OI and FP in a single study, demonstrating various theoretical implications in the context of manufacturing SMEs in emerging countries. Overall, the findings of this study confirmed that the owners/managers of the UAE’s manufacturing SMEs need to be acquainted with the need of creating a working environment fostering organizational learning processes and capabilities to enhance IP and OP activities, thereby improving their market effectiveness and profitability.

Article
Publication date: 9 February 2024

Desi Tri Kurniawati, Yudi Fernando, M. Abdi Dzil Ikhram W. and Masyhuri

The mergers and acquisitions impact the firm’s marketing strategy to target the potential market. To compete with conventional banks, Shariah banks have accommodated financial…

Abstract

Purpose

The mergers and acquisitions impact the firm’s marketing strategy to target the potential market. To compete with conventional banks, Shariah banks have accommodated financial technology (Fintech) and digitalisation to retain existing customers and attract potential customers. Furthermore, this study aims to analyse the role of organisational trust and commitment in mediating the effect of perceived organisational support and managers’ perceptions of the readiness for Shariah-compliant Fintech adoption.

Design/methodology/approach

To obtain information, 115 managers from Shariah bank in Indonesia were surveyed. The data were then analysed using PLS-SEM with SmartPLS software.

Findings

Perceived organisational support became crucial in improving readiness to adopt the digitalisation initiative and adhere to Shariah norms. Moreover, organisational trust and commitment fully mediated the effect of perceived organisational support and manager’s readiness to change towards Shariah digital bank.

Practical implications

Adopting Fintech and its services can offer better value to customers. Digital technology has supported the merger acquisition of Shariah bank to reduce operational costs and improve productivity and service quality. The Fintech adoption in Shariah banks needs to align with a marketing strategy that can add value, offer efficient services and ensure that all transactions are safe, transparent and Riba-free (interest charged on financial transactions).

Originality/value

From Shariah bank’s perspective, the role of organisational support in Fintech adoption is limited, and there is a lack of studies investigating managers’ readiness to change in post-merger and acquisitions. This study sheds new light on how Shariah banks must offer Fintech services and adopt digital technology to remain relevant and competitive. This study provides evidence of Shariah-compliant bank readiness and organisational support and commitment enablers using two mediating mechanisms. Properly adopting Fintech can provide superior service and Shariah-compliant banking services.

Details

Journal of Islamic Marketing, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1759-0833

Keywords

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