Douglas L. Veilleux, Eduardo Gonçalves, Mohammad Faghri, Yutaka Asako and Majid Charmchi
To demonstrate, through numerical models, that it is possible to simulated low‐gravity phase change (melting), of an electrically conducting material (gallium), in terrestrial…
Abstract
Purpose
To demonstrate, through numerical models, that it is possible to simulated low‐gravity phase change (melting), of an electrically conducting material (gallium), in terrestrial conditions via the application of electromagnetic fields.
Design/methodology/approach
A complete three‐dimensional mathematical formulation governing a phase change process in the presence of an electromagnetic field has been developed. In addition a comprehensive parametric study has been completed to study the various effects of gravity, Stefan number, Hartmann number and electromagnetic pressure number upon the phase change process.
Findings
The results show that the application of an electromagnetic filed can be used to simulate key melting characteristics found for actual low‐gravity. However, the resulting three‐dimensional flow field in the melted region differs from actual low‐gravity. The application of an electromagnetic field creates a flow phenomenon not found in actual low‐gravity or previously seen in two‐dimensional problems.
Research limitations/implications
Future work may include the use of oscillating electromagnetic fields to enhance convection in energy storage systems in a low‐gravity environment.
Practical implications
The ability to suppress unwanted convective flows in a phase change process without the high magnetic fields necessary in magnetic field only suppression systems.
Originality/value
This work fills a void in the literature related to conducting fluids and the effects of magnetic and electromagnetic fields.
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Kirstin Hallmann, Christoph Breuer, Michael Ilgner, Thomas Giel and Lea Rossi
The purpose of this paper is to identify the determinants of success of elite athletes by applying the concept of career success to a sporting context. The concept of career…
Abstract
Purpose
The purpose of this paper is to identify the determinants of success of elite athletes by applying the concept of career success to a sporting context. The concept of career success includes extrinsic (i.e. tangible) career accomplishments like medals as well as intrinsic factors referring to subjective judgements about career attainments. Thereby, a holistic perspective is taken which has not been studied extensively before.
Design/methodology/approach
Based on previous literature, a theoretical model was derived outlining how human capital, motivation, organisational characteristics and socio-demographics affect both intrinsic and extrinsic career success. To measure the impact of these factors, primary (n=1,249) and secondary data of elite athletes were collected. Regression analyses indicated that all factors included in the theoretical model were associated with extrinsic and intrinsic success.
Findings
Institutional support was an important driver for intrinsic career success while financial support affected extrinsic career success. There was no significant influence of extrinsic career success on intrinsic career success.
Practical implications
These findings imply that policy makers should offer enhanced dual career options, such as mentoring programmes, aspects like sport-psychological support and nutrition counselling, and long-term, stable financial support for athletes to maximise career success.
Originality/value
This paper applies the construct of career success to sports. A focus on the athletes’ intrinsic career success is placed as this area has been neglected in past research.
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Rocco Palumbo, Elena Casprini and Mohammad Fakhar Manesh
Institutional, economic, social and technological advancements enable openness to cope with wicked public management issues. Although open innovation (OI) is becoming a new…
Abstract
Purpose
Institutional, economic, social and technological advancements enable openness to cope with wicked public management issues. Although open innovation (OI) is becoming a new normality for public sector entities, scholarly knowledge on this topic is not fully systematized. The article fills this gap, providing a thick and integrative account of OI to inspire public management decisions.
Design/methodology/approach
Following the SPAR-4-SLR protocol, a domain-based literature review has been accomplished. Consistently with the study purpose, a hybrid methodology has been designed. Bibliographic coupling permitted us to discover the research streams populating the scientific debate. The core arguments addressed within and across the streams were reported through an interpretive approach.
Findings
Starting from an intellectual core of 94 contributions, 5 research streams were spotted. OI in the public sector unfolds through an evolutionary path. Public sector entities conventionally acted as “senior partners” of privately-owned companies, providing funding (yellow cluster) and data (purple cluster) to nurture OI. An advanced perspective envisages OI as a public management model purposefully enacted by public sector entities to co-create value with relevant stakeholders (red cluster). Fitting architectures (green cluster) and mechanisms (blue cluster) should be arranged to release the potential of OI in the public sector.
Research limitations/implications
The role of public sector entities in enacting OI should be revised embracing a value co-creation perspective. Tailored organizational interventions and management decisions are required to make OI a reliable and dependable public value generation model.
Originality/value
The article originally systematizes the scholarly knowledge about OI, presenting it as a new normality for public value generation.
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Sylvie Guerrero and Hélène Challiol Jeanblanc
The purpose of this paper is to explore the antecedents of development idiosyncratic deals (i-deals) from an organizational politics and a situationist perspective. The paper…
Abstract
Purpose
The purpose of this paper is to explore the antecedents of development idiosyncratic deals (i-deals) from an organizational politics and a situationist perspective. The paper tests a moderated mediation model in which networking skills is indirectly related to development i-deal in a context of high hierarchical plateau.
Design/methodology/approach
The authors test the research model with a sample of 252 engineers, 88 percent male, who work in an economically wealthy region of France and who are thus well positioned to negotiate development i-deals.
Findings
The authors lead analyses with the Preacher et al.’s macros on SPSS. Results support the hypotheses. The authors find that support-seeking behaviors partially mediate the relationship between networking skills and development i-deals, and that this relationship is significant only in a context of high plateauing.
Originality/value
Overall, this study contributes to a deeper understanding of i-deal antecedents by bridging the literatures on i-deals and careers. It also shows that socially skilled employees are able to seek support and in turn, to proactively negotiate development i-deals. This process is a way to cope with perceptions of hierarchical plateau.