Mustafa Turkyilmazoglu and Ioan Pop
This study aims to investigate the flow and heat transfer characteristics of a Bingham viscoplastic fluid subjected to the combined effects of axial rotation and radial stretching…
Abstract
Purpose
This study aims to investigate the flow and heat transfer characteristics of a Bingham viscoplastic fluid subjected to the combined effects of axial rotation and radial stretching of a circular disk. Building upon existing models for Bingham fluids on stationary walls, we extend the formulation to incorporate the effects of a linearly stretching disk using von Kármán similarity transformations.
Design/methodology/approach
The resulting system of nonlinear ordinary differential equations is solved to characterize the flow and thermal fields. Three dimensionless parameters govern the momentum layer: a swirling number capturing the balance between rotation and stretching, a Bingham number characterizing the fluid’s yield stress and a modified Reynolds number incorporating the disk stretching. The Prandtl number controls the thermal response.
Findings
For purely stretching flows, a two-dimensional flow structure emerges. However, the introduction of rotation induces three-dimensional flow behavior. Unlike previous studies suggesting that moderate Bingham numbers are sufficient for non-Newtonian effects on purely revolving disks, the findings indicate that significantly higher yield stresses are required to observe non-Newtonian characteristics under radial stretching conditions. This difference can be attributed to the enhancing influence of wall movement on the fluid dynamics. At high Bingham numbers, a two-layer flow structure develops, comprising an unyielded plug region above the disk and a yielded shear layer adjacent to the wall. The von Kármán viscous pump mechanism drives the Bingham flow within this regime.
Originality/value
Physical quantities such as drag force due to wall shear stress, torque resulting from tangential shear stress and Nusselt number are extracted from the quantitative data.
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Sana Goher, Zaheer Abbas and Muhammad Yousuf Rafiq
The boundary layer flow of immiscible fluids plays a crucial role across various industries, influencing advancements in industrial processes, environmental systems, healthcare…
Abstract
Purpose
The boundary layer flow of immiscible fluids plays a crucial role across various industries, influencing advancements in industrial processes, environmental systems, healthcare and more. This study explores the thermally radiative boundary layer flow of a shear-driven Ree–Eyring fluid over a nanofluid. The investigation offers valuable insights into the intricate dynamics and heat transfer behavior that arise when a nanofluid, affected by thermal radiation, interacts with a non-Newtonian Ree–Eyring fluid. This analysis contributes to a deeper understanding of the complex interactions governing such systems, which is essential for enhancing efficiency and innovation in multiple applications.
Design/methodology/approach
The simulation investigates the convergence of boundary layers under varying shear strengths. A comparative analysis is conducted using
Findings
The temperature of the Al2O3 nanoparticles is always higher than the
Originality/value
The results stated are original and new with the thermal radiative boundary layer flow of two immiscible Ree–Eyring fluid and Al2O3/
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The concept of honor, a tension and balance between a focus on the internal and the external for validation of one’s sense of worth and standing in a social group, captures the…
Abstract
Purpose
The concept of honor, a tension and balance between a focus on the internal and the external for validation of one’s sense of worth and standing in a social group, captures the attention of scholars because it offers a way of understanding the motivations of proud and often violent people belonging to these cultures. The purpose of this paper is to demonstrate how this focus has led to conceptual and empirical path dependence in the study of honor that has dramatically limited our understanding of this important phenomenon in workplaces and other social interaction contexts, and to suggest a number of alternative paths forward.
Design/methodology/approach
The author draws on extant work on honor and related concepts independent of violence, aggression or conflict, to posit that honor be conceptualized more broadly – and less negatively – as a culturally influenced system of behavioral guidelines to determine what is acceptable and moral in a given context. This conceptual paper presents a novel, understudied approach to honor research in international and cross-cultural studies.
Findings
The study discusses critical implications of this useful rebalancing for theory, measurement and practice going forward.
Originality/value
By reconceptualizing and rebalancing the historical path-dependent trajectory of honor research, this analysis adds relevant nuance to our understanding of an influential cultural difference and helps explore new implications of honor for research and practice.
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The guaranteed minimum income is an idea that is consonant with a social-theoretical tradition which can be traced from G. W. F. Hegel via Eduard Heimann to contemporary social…
Abstract
The guaranteed minimum income is an idea that is consonant with a social-theoretical tradition which can be traced from G. W. F. Hegel via Eduard Heimann to contemporary social thinkers like Jürgen Habermas and beyond. It is the cornerstone of an expansive theory of social policy expressive of the changes in the relationship between economy and society over the long-term, which I am referring to here as the societal rationalization of the economy. By starting with Hegel's remarks on poverty in The Philosophy of Right (1821/1958), the stage is set to examine the guaranteed minimum income as a policy project with strong constitutional implications. Like Hegel, Eduard Heimann did not address the idea of the guaranteed minimum income directly; yet, his arguably most important work, Social Theory of Capitalism: Theory of Social Policy (1929/1980), provides an excellent frame of reference for appreciating how the guaranteed minimum income exemplifies a radically reformist project of social policy that is pointing beyond inherently regressive social structures. In the writings of Ralf Dahrendorf and Claus Offe, a theory of social policy that treats the guaranteed minimum income as a constitutional right takes shape. This chapter concludes with an attempt at delineating how a guaranteed minimum income should aspire to be one important step toward the societal rationalization of the economy.
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Carel D. Jansen van Vuuren, Nina Barnes, Marieta du Plessis and José M. Frantz
This chapter proposes guiding values for higher education institutions (HEIs) to navigate an environment of high change. In conditions where volatility, uncertainty, complexity…
Abstract
This chapter proposes guiding values for higher education institutions (HEIs) to navigate an environment of high change. In conditions where volatility, uncertainty, complexity, and ambiguity (VUCA) create unprecedented challenges, the higher education (HE) leader needs innovative and unique solutions to succeed. The intensity, frequency, and speed to change are perpetually increasing to the extent that traditional leadership methods prove ineffective. The research draws from two larger qualitative studies conducted at a previously disadvantaged university. The participants of both studies included academics who hold leadership roles and are in various career stages. The studies were chosen due to their focus on institutional values, hence allowing the ability to identify theoretical categories. The transcripts of both case studies were reanalyzed, and data were presented as themes. The authors then proceeded to consolidate the themes by classifying the values as either terminal or instrumental. From the findings of this study, such terminal values relate to building trust, demonstrating an ethic of care, and exhibiting ethical and equitable practices. In order to achieve these terminal values, empowerment, collaboration, communication, innovation and creativity, teamwork, and participation would be instrumental. The authors proposed a taxonomy of values to support effective leadership and growth processes for HEIs.
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Alyson Rees, Tom Slater, Roxanna Dehaghani and Rachel Swann
The purpose of this study is to read across 20 adult practice reviews (APRs) undertaken in Wales to identify cross-cutting themes.
Abstract
Purpose
The purpose of this study is to read across 20 adult practice reviews (APRs) undertaken in Wales to identify cross-cutting themes.
Design/methodology/approach
The method was for each APR to be read and independently coded by four researchers from differing disciplines of criminology, law and social work.
Findings
Five overarching themes were identified of (safeguarding, capacity and duty to report; commissioning and inspection; transitions; voice of vulnerable people and family and carers. In addition, quality and good practice are reflected on
Research limitations/implications
A further study capturing more APRs since the implementation of the Social Services and Well-being Act (2014) should be undertaken to help review changes in practice since the new legislation was introduced. Future research into APRs should adopt a similar multi-disciplinary approach.
Practical implications
The study identified the benefit of adopting a single unified assessment tool.
Originality/value
This is only the second study of its type undertaking a multi-disciplinary perspective of APRs.
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Krishnendu Saha, Bhavesh Patel and Stefania Paladini
This study investigates the role of leadership and cultural transformation in facilitating Lean Six Sigma (LSS) practices in clinical pharmacy settings to reduce medicine waste…
Abstract
Purpose
This study investigates the role of leadership and cultural transformation in facilitating Lean Six Sigma (LSS) practices in clinical pharmacy settings to reduce medicine waste within the UK National Health Services (NHS).
Design/methodology/approach
A systematic literature review on Lean Six Sigma in health care was conducted to develop an analytical framework. This was followed by a qualitative case study of an English NHS trust to test the framework, exploring pharmacists' adoption of LSS practices and their impact on staff behaviour, focussing on leadership decisions and organisational culture.
Findings
The research highlights the significance of leadership’s prioritisation in waste reduction efforts and its influence on staff engagement. It also examines the intricate relationship between leadership decisions, education and training, resource allocation, and the prevailing clinical culture, which shapes pharmacists' behaviours and attitudes towards LSS practices and waste reduction.
Research limitations/implications
The study’s focus on a single NHS trust limits the generalisability of the findings, suggesting the need for further research across different healthcare settings.
Practical implications
The study recommends a cultural transformation, earlier training, and reformation in service strategy to enhance the adoption of LSS practices and contribute to a more sustainable future for the wider health services.
Social implications
Effective medicine waste management prevents harm and helps address the current NHS medicine shortage. The NHS can allocate resources efficiently, ensure timely treatment, and prepare for future disruptions by implementing the proposed framework.
Originality/value
We developed a leadership model for the NHS to reduce medicine waste, offering a novel approach to addressing the challenge of medicine waste through leadership and cultural transformation.
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Ree Jordan, Terrance W. Fitzsimmons and Victor J. Callan
This paper explores the phenomenon of organizational maverickism, proposing that mavericks, alongside innovators and entrepreneurs, play a crucial role in driving transformational…
Abstract
Purpose
This paper explores the phenomenon of organizational maverickism, proposing that mavericks, alongside innovators and entrepreneurs, play a crucial role in driving transformational change. While the actions of innovators and entrepreneurs as change agents are well understood, this paper focuses predominantly on how the practices of mavericks also provide significant contributions to achieving game-changing organizational outcomes.
Design/methodology/approach
A literature review and conceptual paper highlighting the beneficial nature of maverickism to organizational change efforts, positioning maverickism as a valid change agent role alongside entrepreneurship and innovation.
Findings
The positively deviant nature of mavericks has high potential for creating radical organizational change strategies. Organizational change is more likely to be successful when the entrepreneurial, innovator and maverick mindsets are used to their optimum advantage.
Research limitations/implications
From this conceptual paper and its arguments, new research directions to guide theory building and organizational practice are identified.
Practical implications
When organizational managers and leaders more fully understand the beneficial practices of mavericks, they are more likely to actively employ them in more meaningful roles as organizational change agents, together with innovators and entrepreneurs.
Originality/value
This paper closes the knowledge gap in understanding maverickism that is an under-researched and under-theorized phenomenon. The arguments in this paper identify a number of areas for future research.
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Majid Mahmoodi and Nazar Dahmardeh Ghaleno
The present study aims to examine the influence of environmental quality, renewable energy, non-renewable energy and quality of governance on sustainable development in two panels…
Abstract
Purpose
The present study aims to examine the influence of environmental quality, renewable energy, non-renewable energy and quality of governance on sustainable development in two panels of 23 Asian and 8 European emerging countries during the 1996–2022 period.
Design/methodology/approach
The present study employed second-generation methods of panel data analysis, which account for cross-sectional dependency and heterogeneity to achieve a more reliable conclusion.
Findings
The augmented mean group and common correlated effects mean group estimation findings exhibit the negative influence of environmental degradation and non-renewable energy on sustainable development, whereas the findings exhibit the positive effect of renewable energy and governance quality on sustainable development.
Practical implications
The findings point out to policymakers and governments the importance of the adoption and implementation of policies to protect the environment, as well as promoting renewable energy incentive policies. Moreover, enhancing governance quality and striving towards good governance is essential for the successful adoption and implementation of energy and environment policies, as well as achieving sustainable development goals.
Originality/value
The present research contributes to the existing related literature in several ways. Adjusted net saving (ANS) is employed as a comprehensive indicator of sustainable development and ecological footprint (EFP) is employed as an exhaustive indicator of the environment’s quality rather than carbon dioxide emissions. In overall, this study is the first, to the best of our awareness, to simultaneously consider ANS, EFP and governance quality for examining the relationship among energy, environmental quality and sustainable development, especially in Asian and European emerging economies.
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This chapter explores the multifaceted relationship between quantum computing (QC) and sustainability, with a focus on the Quadratic Unconstrained Binary Optimisation (QUBO…
Abstract
This chapter explores the multifaceted relationship between quantum computing (QC) and sustainability, with a focus on the Quadratic Unconstrained Binary Optimisation (QUBO) framework. The manuscript delves into the theoretical underpinnings of QUBO and its formulation as a quantum annealing problem, identifying the quantum principles that facilitate the resolution of such optimisation challenges. It offers a critical analysis of the suitability of QUBO for unconstrained problems and its efficacy in consistently locating the global minimum – a pivotal concern in optimisation tasks. Further, this study provides a nuanced discussion on the intersection of QC and sustainability. It delineates the types of optimisation problems within sustainability initiatives that are amenable to formulation as QUBO problems, while also highlighting sustainability challenges that elude the QUBO framework. It argues for the integration of quantum solutions into business operations, highlighting the potential for QC to play a transformative role in achieving sustainability objectives. The critique of the current hype surrounding QC provides a balanced viewpoint, ensuring a grounded approach to the adoption of quantum technologies in tackling pressing global issues.