Search results

1 – 10 of 16
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 14 September 2018

Mustafa Bahadir Ozdemir and Mustafa Emre Ergun

This study aims to focus on usage of Al2O3/water nanofluid as working fluid in a combi boiler. The plate heat exchanger located at the bottom of the combi boiler has been used for…

752

Abstract

Purpose

This study aims to focus on usage of Al2O3/water nanofluid as working fluid in a combi boiler. The plate heat exchanger located at the bottom of the combi boiler has been used for heating the domestic water in the present study. Al2O3/water nanofluid has also been used in obtaining of the heat energy provided from combustion. Therefore, thermal performance of Al2O3/water has been determined by comparing water and nanofluid-water mixture. The present study also investigates heat transfer rates as numerical and experimental for varying cold side outlet temperatures, comparatively.

Design/methodology/approach

The present study has included both experimental and numerical methodologies. The experimental setup consists of main heat exchanger, atmospheric burner, circulation pump and plate-type heat exchanger in which the Al2O3/water nanofluid was used as working fluid to heat the domestic water. In the numerical part of the study, a commercial computational fluid dynamic code has been used to model heat rate and thermal efficiency of the heat exchanger used.

Findings

It has been concluded that the predicted results are in satisfactorily good agreement with the measured data. In the experimental part of the study, the flow rate of Al2O3/water nanofluid was kept constant during the experiments. The flow rates of the water by which the heated Al2O3/water nanofluid mixture was cooled via the plate heat exchanger have been changed as 3, 4, 5 and 6 lpm. The domestic water temperatures that were kept constant have also been changed as 40°C, 45°C, 50°C, 55°C and 60°C. It has been concluded that the Al2O3/water nanofluid thermal efficiency has been 16 per cent better than pure water.

Originality/value

The main originality of the present study is that thermal efficiency of the plate-type heat exchanger when Al2O3/water mixture nanofluids are used as there are limited studies related to the usage of Al2O3/water mixture nanofluids in the plate-type heat exchanger not only experimental but also numerical methodologies.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 29 no. 4
Type: Research Article
ISSN: 0961-5539

Keywords

Access Restricted. View access options
Article
Publication date: 17 March 2023

Arunodaya Raj Mishra, Mustafa Ergün, Basil Oluoch Okoth, Selçuk Korucuk, Ahmet Aytekin and Çağlar Karamaşa

Due to the current pandemic, the importance of logistics functions and decisions is well understood both at the level of companies and users. Logistics systems and related…

243

Abstract

Purpose

Due to the current pandemic, the importance of logistics functions and decisions is well understood both at the level of companies and users. Logistics systems and related decisions are of vital importance in making supply chains effective, efficient and without disruption. Logistic pressure factors may emerge at different points along the logistics process, and given the role of logistics decisions as one of the important indicators of competitiveness, the determination of the logistics pressures that are likely to increase the costs of business, and their causative factors are a vital aspect of the logistics decision-making process. The study aims to provide assistance in the selection of the most ideal logistics decision by ranking the pressure factors affecting the logistics system, especially during the pandemic period for logistics enterprises operating in Ordu and Giresun provinces and which have a corporate identity.

Design/methodology/approach

In this study, it is aimed to make the most ideal logistics decision selection by ranking the pressure factors affecting the logistics system, especially during the pandemic period for the logistics enterprises operating in Ordu and Giresun provinces and having a corporate identity. For that purpose interval-valued Pythagorean fuzzy (IVPF)–analytic hierarchy process (AHP) based combinative distance-based assessment (CODAS) methodology was used. Additionally sensitivity and comparison analysis were discussed.

Findings

Competitive pressure was found as the most important pressure factor affecting the logistics system during the pandemic period. Change in regulatory rules was the pressure factor found to have the least effect on the logistics system. Using the weights of logistics pressure factors, “Operational Decisions” was found to be the most ideal logistics decision selection.

Research limitations/implications

The findings provide support for the evaluation of logistical pressures and decision options by presenting a decision model capable of processing ambiguous information. During a pandemic or similar period, the study assists decision makers in determining a new route. The findings will also call business managers' attention to logistical pressure factors and lead them toward more realistic and feasible practices in the logistics decision-making process.

Originality/value

This study provided an effective and applicable solution to a decision-making problem in the logistics sector including logistics pressure factors and the selection of logistics decisions. In this context, a methodology was presented that will allow businesses to self-evaluate their own logistics pressure factors and the selection of optimal solutions.

Details

Kybernetes, vol. 53 no. 7
Type: Research Article
ISSN: 0368-492X

Keywords

Access Restricted. View access options
Article
Publication date: 15 September 2023

İrem Bekar, Izzettin Kutlu and Ruşen Ergün

This study aimed to design a user-participatory methodology to investigate the post-occupancy sustainability of reused historical buildings and to apply it to a case study.

653

Abstract

Purpose

This study aimed to design a user-participatory methodology to investigate the post-occupancy sustainability of reused historical buildings and to apply it to a case study.

Design/methodology/approach

This study was designed in four stages. In the first stage, the sustainability parameters and sub-parameters were determined in the reused historical buildings based on the literature. The second stage included a field study in which the current situation of the study area was analysed, and the users were reached using the survey technique. In the third stage, the data obtained from the user participation were analysed with importance performance analysis (IPA) and an IPA matrix was created. The fourth stage included an evaluation of the results of the analysis and the development of recommendations.

Findings

IPA is a supportive method for ensuring the sustainable use of historic buildings. According to the data obtained from the IPA, it was seen that the functional sustainability of the building was achieved to a great extent. At the same time, there were deficiencies in technical and environmental sustainability. In terms of aesthetic sustainability, it was observed that the importance and performance values given by the users were generally consistent with each other.

Originality/value

The originality of this study is that the performance of the reused historical buildings in the process of use was monitored with appropriate parameters, and a user-participated method was proposed that allows improvement suggestions to be developed in line with the results obtained.

Details

Open House International, vol. 49 no. 3
Type: Research Article
ISSN: 0168-2601

Keywords

Access Restricted. View access options
Book part
Publication date: 28 August 2024

Mustafa F. Özbilgin and Cihat Erbil

We introduce the notion of rainbow burning and develop the concept of rainbow washing, which draws on the concept of genderwashing, to explicate the instrumentalization of…

Abstract

We introduce the notion of rainbow burning and develop the concept of rainbow washing, which draws on the concept of genderwashing, to explicate the instrumentalization of Lesbian, Gay, Bisexual and Trans Plus (LGBT+) inclusion. Rainbow burning happens when LGBT+ rights and visibility are targeted through hate to divert attention from economic, social, and political decline. For example, LGBT+ rights are unjustly blamed for the decline of the social and economic fabric. Rainbow washing happens when an organization uses or instrumentalizes LGBT+ concerns for commercial and social ends. We draw on examples from unsupportive and supportive capitalist market systems and explore how rainbow burning and washing manifest in each. This chapter explores the antecedents, correlates and consequences of rainbow burning and washing in unsupportive and supportive contexts. We identify regulatory, cultural and governance measures that can be taken against rainbow burning and rainbow washing to foster LGBT+ inclusion.

Access Restricted. View access options
Article
Publication date: 23 July 2024

Fatma Özdoğan, Gonzalo Lizarralde and Benjamin Herazo

In this paper, we explore the impact of land management practices on post-disaster housing, to draw lessons from the case of reconstruction in Türkiye.

297

Abstract

Purpose

In this paper, we explore the impact of land management practices on post-disaster housing, to draw lessons from the case of reconstruction in Türkiye.

Design/methodology/approach

We conducted two qualitative case studies of two reconstruction experiences following the 2020 Elazığ and İzmir earthquakes. We analyzed 70 articles, technical reports and press releases and then used a set of policy analysis tools to examine five policy documents in depth. Finally, we wanted to understand how key officers interpreted these policy documents, so we closely analyzed the transcripts of eight semi-structured interviews.

Findings

Türkiye’s legal framework comprises five main policies that concentrate power in the central government and are not tailored to post-disaster reconstruction. This framework facilitates the construction of rubber-stamped apartment buildings, which disregard cultural and social contexts and practices. The current reconstruction policy neglects alternative options like cooperative housing, which could better respond to communal needs and expectations. It also often leads to the loss of land rights among affected residents.

Research limitations/implications

We only analyzed decision-making processes in two case studies and based our study on a limited number of interviews. Therefore, it is difficult to generalize our results and apply them to other contexts. Further quantitative and qualitative work is necessary to conceptualize the links between land management and post-disaster housing reconstruction.

Practical implications

Our findings suggest a need for legislative frameworks specifically designed to address land management during post-disaster reconstruction. The concentration of power in central governments is problematic, thus it remains crucial to empower local authorities by reinforcing technical expertise and facilitating administrative autonomy.

Originality/value

This study offers unique insights into how power relations influence land management practices in post-disaster housing reconstruction. Examining the centralization of power and its impact on cultural and social practices identifies common forms of dispossession and points to key areas for policy improvement.

Details

Disaster Prevention and Management: An International Journal, vol. 33 no. 5
Type: Research Article
ISSN: 0965-3562

Keywords

Available. Open Access. Open Access
Article
Publication date: 22 July 2024

Estelle van Tonder, Daniel J. Petzer and Sam Fullerton

Customers’ proactive helping behaviours involving personal initiative taking may present an effective solution for assisting other customers in avoiding harmful brands…

754

Abstract

Purpose

Customers’ proactive helping behaviours involving personal initiative taking may present an effective solution for assisting other customers in avoiding harmful brands. Accordingly, this study aims to propose a model explaining the role of positive psychological capital (self-efficacy and optimism) in influencing customers’ proactive helping behaviours involving personal initiative taking. The study additionally provides greater clarity regarding the moderating effect of emotional self-control within the suggested model.

Design/methodology/approach

Survey data were collected from 256 respondents in South Africa, who reported on their perceptions and the degree to which they engage in proactive helping behaviours to assist other customers in avoiding harmful brands. Hypotheses were tested using regression analysis.

Findings

General self-efficacy and social optimism influence customers’ proactive helping behaviours. Emotional self-control moderates the indirect effect of general self-efficacy on customers’ proactive helping behaviours through social optimism.

Research limitations/implications

Greater insight is obtained into the interplay between factors representing a positive psychological state and self-control of negative emotions and these factors’ effect on customers’ proactive helping behaviours involving personal initiative taking.

Originality/value

The research extends knowledge of proactive helping behaviours involving personal initiative taking to assist other customers in avoiding harmful brands and subsequently provides a baseline for further research in this regards. Practically, the research is useful to social agents of society concerned with promoting responsible purchasing practices.

Details

Journal of Consumer Marketing, vol. 41 no. 6
Type: Research Article
ISSN: 0736-3761

Keywords

Access Restricted. View access options
Article
Publication date: 26 November 2024

Matevž Matt Rašković, Fiona Hurd and Theresa Onaji-Benson

The purpose of this paper is to provide a scene-setting viewpoint that critically examines various diversity, equity and inclusion (DEI) blind spots within the field of…

198

Abstract

Purpose

The purpose of this paper is to provide a scene-setting viewpoint that critically examines various diversity, equity and inclusion (DEI) blind spots within the field of international business (IB). These include issues such as social justice, intersectionality, de-colonization, the co-creation of inclusive research practices in indigenous spaces, social dialogue and the gap between DEI rhetoric and reality. An additional aim of the viewpoint is also to contextualise the discussion of DEI blind spots in terms of the six papers which make up the first part of a two-part special issue on DEI in IB".

Design/methodology/approach

The authors build on existing DEI overview works and comment on specific DEI blind spots. The authors also discuss the role of positionality as critical reflexive scholarship practice, which they see as an essential step in problematizing structural inequalities. The authors then discuss six specific areas where DEI blindspots persist within the IB literature and link their discussion to the six papers included in the first part of their DEI special issue.

Findings

Addressing the contradictions between the business and social justice cases for DEI requires addressing the ontological contradictions between the two perspectives through problematizing structural inequalities. A key contribution of the paper is also the discussion around positionality in DEI research and the relevance of positionality statements as part of critical reflexive scholarship in support of a socially just DEI research agenda.

Originality/value

The authors discuss the role DEI research plays and can play within the evolution of the IB discipline. The authors apply a critical management studies perspective to pervasive DEI issues, as well as engage with the topics in the special issue through a unique critical reflexive epistemology which includes their own positionality statements as guest editors and researchers. Their critical discussion and recommendations for future research serve as a kind of whetstone to sharpen IB’s DEI research tools and in turn for IB to help sharpen DEI research’s tools, supporting it to become more socially just.

Details

Critical Perspectives on International Business, vol. 21 no. 1
Type: Research Article
ISSN: 1742-2043

Keywords

Access Restricted. View access options
Article
Publication date: 18 March 2024

Mubarik Abdul Mumin, Ibrahim Osman Adam and Muftawu Dzang Alhassan

This study aims to investigate the influence of information and communication technology (ICT) capabilities on supply chain fraud and sustainability within the context of Ghana’s…

203

Abstract

Purpose

This study aims to investigate the influence of information and communication technology (ICT) capabilities on supply chain fraud and sustainability within the context of Ghana’s small and medium-sized enterprises (SMEs). Additionally, the research explores the mediating role of supply chain fraud in the relationship between ICT capabilities and supply chain sustainability.

Design/methodology/approach

Data were collected from 102 respondents within Ghana’s SME sector, and the research employed the dynamic capability theory as the conceptual framework. The study utilized partial least squares-structural equation modeling (PLS-SEM) to develop and analyze the proposed model.

Findings

The results of the study reveal a significant reduction in supply chain fraud attributable to enhanced ICT capabilities within Ghanaian SMEs. Moreover, ICT capabilities exert a significant positive influence on supply chain sustainability. Importantly, supply chain fraud emerges as a mediator, elucidating its role at the nexus of supply chain sustainability and ICT capabilities.

Originality/value

This research contributes to the limited body of evidence on the interconnectedness of ICT capabilities, supply chain fraud and supply chain sustainability, particularly within the context of Ghanaian SMEs. Notably, this study pioneers an examination of the mediating impact of supply chain fraud on the relationship between ICT capabilities and supply chain sustainability.

Details

Technological Sustainability, vol. 3 no. 2
Type: Research Article
ISSN: 2754-1312

Keywords

Access Restricted. View access options
Article
Publication date: 1 January 1988

Fred Miller and A. Hamdi Demirel

The article examines the Turkish beer market and the experience of Turkey's most successful brewer, Efes Pilsen, within that market. Using the product life cycle, it describes the…

327

Abstract

The article examines the Turkish beer market and the experience of Turkey's most successful brewer, Efes Pilsen, within that market. Using the product life cycle, it describes the development of the market and Efes' competitive strategies. It assesses the impact of the government's 1984 decision to reclassify beer as an alcoholic beverage. Finally, it identifies several lessons for marketing non‐necessary consumer goods such as beer in developing countries.

Details

International Marketing Review, vol. 5 no. 1
Type: Research Article
ISSN: 0265-1335

Keywords

Access Restricted. View access options
Article
Publication date: 11 February 2022

Claudia Araujo, Marina Siqueira and Liliana Amaral

Health-care professionals are caring for patients in unprecedented circumstances during the COVID-19 pandemic, dealing with scarce resources, higher demand and uncertain outcomes…

203

Abstract

Purpose

Health-care professionals are caring for patients in unprecedented circumstances during the COVID-19 pandemic, dealing with scarce resources, higher demand and uncertain outcomes. In this context, the purpose of this study is to explore the views of health-care professionals regarding their work conditions and perceived impacts of the pandemic on their health, as well as the role of resilience and improvisation in face of the new challenges.

Design/methodology/approach

This exploratory and qualitative study carried out semi-structured interviews with eleven health-care professionals from three Brazilian states that have been working in intensive care settings during the pandemic.

Findings

The pandemic has posed a great personal and professional burden on the professionals, impacting their physical and mental health. It also has required them greater resilience and improvisation capabilities to adequately perform work-related activities.

Practical implications

In addition to individual-level attitudes, the results suggest that aspects in the government, society, personal relationships and providers domains influence the effects of the pandemic on the health-care professionals and how they cope with the ongoing crisis. Such a multifactorial approach should therefore be considered by health managers.

Originality/value

With no similar effort identified, this study emphasizes the relevance of discussing the pandemic burden on frontline professionals and intends to be useful for health practitioners, managers, academics and policymakers.

Details

International Journal of Quality and Service Sciences, vol. 14 no. 3
Type: Research Article
ISSN: 1756-669X

Keywords

1 – 10 of 16
Per page
102050