Joshua Gottlieb, Roger Davis and John Clark
The authors aim to present a procedure for the parallel, steady and unsteady conjugate, Navier–Stokes/heat-conduction rotor-stator interaction analysis of multi-blade-row…
Abstract
Purpose
The authors aim to present a procedure for the parallel, steady and unsteady conjugate, Navier–Stokes/heat-conduction rotor-stator interaction analysis of multi-blade-row, film-cooled, turbine airfoil sections. A new grid generation procedure for multiple blade-row configurations, including walls, thermal barrier coatings, plenums, and cooling tubes, is discussed.
Design/methodology/approach
Steady, multi-blade-row interaction effects on the flow and wall thermal fields are predicted using a Reynolds’s-averaged Navier–Stokes (RANS) simulation in conjunction with an inter-blade-row mixing plane. Unsteady, aero-thermal interaction solutions are determined using time-accurate sliding grids between the stator and rotor with an unsteady RANS model. Non-reflecting boundary condition treatments are utilized in both steady and unsteady approaches at all inlet, exit and inter-blade-row boundaries. Parallelization techniques are also discussed.
Findings
The procedures developed in this research are compared against experimental data from the Air Force Research Laboratory’s turbine research facility.
Practical implications
The software presented in this paper is useful as both the design and analysis tool for fluid system and turbomachinery engineers.
Originality/value
This research presents a novel approach for the simultaneous solution of fluid flow and heat transfer in film-cooled rotating turbine sections. The software developed in this research is validated against experimental results for 2D flow, and the methods discussed are extendable to 3D.
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The purpose of this paper is to examine the relations between charisma and bureaucracy, as presented in rabbinic commentaries on Exodus 18 and Max Weber's Economics and Society…
Abstract
Purpose
The purpose of this paper is to examine the relations between charisma and bureaucracy, as presented in rabbinic commentaries on Exodus 18 and Max Weber's Economics and Society. It aims to show that approaches developed in these texts have important practical implications for contemporary managers and leadership development professionals.
Design/methodology/approach
The paper is an interpretive study. It uses textual analysis to compare and contrast the dynamics of leadership portrayed in each document.
Findings
Like Weber, the Torah treats charisma and bureaucracy as mutually antagonistic forces that co‐exist in dynamic interaction. However, where Weber's account is descriptive, the Torah's is prescriptive, advocating forms of leadership that deliberately combine bureaucracy and charisma.
Research limitations/implications
The paper's goal is not to review contemporary literature on charismatic versus bureaucratic leadership. Instead, it seeks to investigate approaches to leadership implicit in two “classics” of very different kinds. As such, the approaches explored here are just two among many other possible approaches. The interpretative method developed here could be used in future studies to examine approaches to leadership implicit not only in Jewish and sociological texts but also in other genres and “wisdom” literatures.
Practical implications
The paper presents three practical implications for contemporary leadership development.
Originality/value
The paper presents a novel perspective on leadership – Mosaic leadership – that highlights the multifaceted and dynamic nature of leadership development. In addition, it shows that management wisdom from the Jewish tradition can be meaningfully compared with ideas developed in other traditions – including the tradition of contemporary management studies.
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Against the backdrop of the Responsibility to Protect (R2P) policy – an instrument with which the UN seeks to protect vulnerable civilians from gross violations of human rights �…
Abstract
Purpose
Against the backdrop of the Responsibility to Protect (R2P) policy – an instrument with which the UN seeks to protect vulnerable civilians from gross violations of human rights – this study examines the application of R2P in the Libyan intervention and the various efforts to replicate similar claim to intervene in Syria. While proposing that the roles of Brazil, Russia, India, China and South Africa (BRICS) is increasingly influential to the success of an intervention, this study asks the question: what are the general conditions for success of R2P application in Libya and Syria during the period 2011-2014?
Design/methodology/approach
In its examination of the policy and scholarly works that have informed, justified and evaluated the processes and outcomes of the principles of R2P policy, this paper used relevant search terms for conditions for success of humanitarian military intervention (COSI). Specific keywords such as R2P, BRICS and humanitarian intervention are scrutinised for relevance to the research question. Documents that failed to satisfy the criteria of research quality were excluded, whereas the key problems and findings identified in each studied document were tabulated into inclusion and exclusion.
Findings
Despite the role of BRICS in the Libyan and Syrian interventions, existing literature failed to explicitly make this connection, although much of the literature agreed on a number of general conditions for success. This paper problematise the relationship between success and BRICS role. One of the reasons for this is the emerging nature of the literature that is beginning to appreciate the plausibility that the BRICS influences the success of an intervention.
Originality/value
This piece synthesises studies that focus on COSI with preference for works that engaged this study’s case countries. Much rich data which even until now are always in need of close examination emerged during data collection, making it useful to craft a third part for BRICS-focused literature that has informed the R2P debate.
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This research presents uncomfortable questions about the viability of alternative energy technologies, which arise during economic contraction and degrowth but are scarcely…
Abstract
Purpose
This research presents uncomfortable questions about the viability of alternative energy technologies, which arise during economic contraction and degrowth but are scarcely addressed within media and academia.
Design/methodology/approach
The author identifies and graphically illustrates differences between media expectations for renewable energy production versus energy reduction strategies. The author contrasts green energy expectations with material factors to develop unasked questions about potential: urban myths (e.g. solar cells are made from sand), assumptions (e.g. alternative energy is of comparable quality to fossil fuel energy and can offset its use), strategic ignorance (e.g. solar cost drops reflect Moore’s law), and trained incapacity (e.g. solar and wind energy is low- or zero-carbon).
Findings
Compared to energy reduction coverage, journalists cover energy production using 1) more character-driven storytelling, 2) about twice the promising language, and 3) far more references to climate change and energy independence. These observations help loosely illustrate a pervasive energy production ethos, a reflexive network including behaviors, symbols, expectations, and material conditions.
Social implications
Fascination with alternative energy may serve as a form of techno-denial to avoid facing the uncertain but inevitable end of growth in consumption and population on our finite planet.
Originality/value
This paper offers journalists, policymakers, researchers, and students new, unasked, questions regarding the expectation that alternative energy technologies can replace fossil fuel. For instance, if wind and sunlight are free, why are wind and solar energies so expensive, requiring billions in subsidies? Where do solar cell and wind turbine costs ultimately arise, if not from fossil fuels (via labor, materials, etc.)?
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Furkan Amil Gur, Adrien Bouchet, Brian R. Walkup and Jonathan A. Jensen
The purpose of this study is to understand the structure and dynamics of minority equity sponsorship agreements and the motivations for organizations to go beyond traditional…
Abstract
Purpose
The purpose of this study is to understand the structure and dynamics of minority equity sponsorship agreements and the motivations for organizations to go beyond traditional sponsorships by acquiring minority equity in the sponsored organization.
Design/methodology/approach
This paper adopts a qualitative methodology and presents interview data from key actors involved in minority equity sponsorship agreements.
Findings
The findings of the paper include major characteristics of minority equity sponsorship agreements including the motivations, dynamics and resources exchanged by sponsoring firms and clubs in these relationships, based on the experiences of key actors from firms, clubs and other key stakeholders, and a conceptual model for forming and maintaining these relationships.
Practical implications
Sponsorships are increasingly evolving into minority equity sponsorship agreements, particularly in the European market. The findings of this study assist sponsoring firms and the executives of clubs in better understanding the dynamics and stakeholder-related consequences of these relations.
Originality/value
The findings of this paper illustrate the differences between minority equity sponsorship agreements and both traditional sponsorships and minority equity alliances. The findings also identify major characteristics of these relationships and the interdependencies among these characteristics.
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Hassanudin Mohd Thas Thaker, Mohamed Ariff and Niviethan Rao Subramaniam
The purpose of this paper is to identify the drivers of residential price as well as the degree co-movement of housing among different states in Malaysia.
Abstract
Purpose
The purpose of this paper is to identify the drivers of residential price as well as the degree co-movement of housing among different states in Malaysia.
Design/methodology/approach
This study adopted an advanced econometrics technique: the dynamic autoregressive-distributed lag (DARDL) and – the time-frequency domain approach known as the wavelet coherence test. The DARDL model was applied to identify the cointegrating relationships and the CWT was used to analyze the co-movement and lead–lag relationships among four states’ regional housing prices. The extracted data were mainly on annual basis and comprised macroeconomics and financial factors. Information with regard to residential prices and other variables was extracted from the National Property Information Centre (NAPIC) website, the Central Bank of Malaysia Statistics Report, the Department of Statistics, Malaysia, I-Property.com and the World Bank (WB). The data covered in this study were the pool data from four main states in Malaysia and different categories of residential properties.
Findings
The empirical results indicate that there were long-run cointegration relationships between the housing price and capital gain and loss, rental per square feet, disposable income, inflation, number of marriages, deposit rate, risk premium and loan-to-value (LTV) ratio. While the wavelet analysis shows that (1) in the long run, Kuala Lumpur housing price having strong co-movement with Selangor, Penang and Melaka housing prices except for Johor and (2) the lead–lag relationship also postulates Kuala Lumpur housing price having in-phase category with Selangor, Penang and Melaka housing prices except for Johor.
Practical implications
This study offers relevant practical implications. First, the study proposes an active collaboration between the private sector and government support which may help to smooth the pricing issue of residential properties. More low-cost residential projects are needed for focus groups including middle- and low-income earners. Furthermore, the results are expected to provide real estate investor in Malaysia, an improved understanding of the regional housing market price dynamics.
Originality/value
The findings of this study were obtained from various reliable sources; therefore, the results reflected the analysis of price drivers and co-movements. Furthermore, findings from this study lend some support to the argument on the rise of residential prices and offer several policy implications from a practical point of view with regard to the residential market.