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1 – 10 of 836Md Motiur Rahaman, Nirmalendu Biswas, Apurba Kumar Santra and Nirmal K. Manna
This study aims to delve into the coupled mixed convective heat transport process within a grooved channel cavity using CuO-water nanofluid and an inclined magnetic field. The…
Abstract
Purpose
This study aims to delve into the coupled mixed convective heat transport process within a grooved channel cavity using CuO-water nanofluid and an inclined magnetic field. The cavity undergoes isothermal heating from the bottom, with variations in the positions of heated walls across the grooved channel. The aim is to assess the impact of heater positions on thermal performance and identify the most effective configuration.
Design/methodology/approach
Numerical solutions to the evolved transport equations are obtained using a finite volume method-based indigenous solver. The dimensionless parameters of Reynolds number (1 ≤ Re ≤ 500), Richardson number (0.1 ≤ Ri ≤ 100), Hartmann number (0 ≤ Ha ≤ 70) and magnetic field inclination angle (0° ≤ γ ≤ 180°) are considered. The solved variables generate both local and global variables after discretization using the semi-implicit method for pressure linked equations algorithm on nonuniform grids.
Findings
The study reveals that optimal heat transfer occurs when the heater is positioned at the right corner of the grooved cavity. Heat transfer augmentation ranges from 0.5% to 168.53% for Re = 50 to 300 compared to the bottom-heated case. The magnetic field’s orientation significantly influences the average heat transfer, initially rising and then declining with increasing inclination angle. Overall, this analysis underscores the effectiveness of heater positions in achieving superior thermal performance in a grooved channel cavity.
Research limitations/implications
This concept can be extended to explore enhanced thermal performance under various thermal boundary conditions, considering wall curvature effects, different geometry orientations and the presence of porous structures, either numerically or experimentally.
Practical implications
The findings are applicable across diverse fields, including biomedical systems, heat exchanging devices, electronic cooling systems, food processing, drying processes, crystallization, mixing processes and beyond.
Originality/value
This work provides a novel exploration of CuO-water nanofluid flow in mixed convection within a grooved channel cavity under the influence of an inclined magnetic field. The influence of different heater positions on thermomagnetic convection in such a cavity has not been extensively investigated before, contributing to the originality and value of this research.
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Drawing on power approach-inhibition theory, this study develops a conditional indirect effect model to explore how team vertical leader position and expert power indirectly…
Abstract
Purpose
Drawing on power approach-inhibition theory, this study develops a conditional indirect effect model to explore how team vertical leader position and expert power indirectly impact members’ shared leadership through vertical leader’s empowering behaviors.
Design/methodology/approach
Multi-source data was collected using a field survey research design. The final sample includes 944 employees in 164 teams from 14 companies in China.
Findings
This study found that the interaction of team vertical leader position power and expert power was positively related to their empowering behaviors, which in turn were positively associated with shared leadership. Moreover, our post hoc-analysis revealed the moderating effect of team power distance orientation on the relationship between vertical leader empowering behaviors and shared leadership.
Originality/value
This study sheds light on shared leadership literature by examining vertical leader position and expert power as antecedents. We also offer new directions for exploring how power functions by discussing leadership through the lens of power approach-inhibition theory.
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Vidmantas Tūtlys, Sigitas Daukilas, Rita Mičiulienė, Nijole Čiučiulkienė and Ričardas Krikštolaitis
This paper aims to explore how the competence-based vocational education and training (VET) curricula facilitate shaping of work values of VET students. It discusses…
Abstract
Purpose
This paper aims to explore how the competence-based vocational education and training (VET) curricula facilitate shaping of work values of VET students. It discusses methodological and ideological orientations of competence-based VET in teaching work values and discloses the typical characteristics of teaching work values in the VET system of Lithuania.
Design/methodology/approach
A quantitative research approach leading to a survey method is adopted to investigate how VET students acquire and apply work-related values and attitudes to work.
Findings
The survey of the VET students has disclosed that students are open to accepting different values of work, including cognitive values, social prestige and altruist values. However, orientation of the VET curricula to and provision of instrumental values lead to relatively weak internalization of the work values related to societal and spiritual dimensions.
Originality/value
The paper provides empirical evidence regarding the implications of the competence-based curricula for teaching students work values in the school-based VET.
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Nirmal K. Manna, Abhinav Saha, Nirmalendu Biswas and Koushik Ghosh
This paper aims to investigate the thermal performance of equivalent square and circular thermal systems and compare the heat transport and irreversibility of magnetohydrodynamic…
Abstract
Purpose
This paper aims to investigate the thermal performance of equivalent square and circular thermal systems and compare the heat transport and irreversibility of magnetohydrodynamic (MHD) nanofluid flow within these systems.
Design/methodology/approach
The research uses a constraint-based approach to analyze the impact of geometric shapes on heat transfer and irreversibility. Two equivalent systems, a square cavity and a circular cavity, are examined, considering identical heating/cooling lengths and fluid flow volume. The analysis includes parameters such as magnetic field strength, nanoparticle concentration and accompanying irreversibility.
Findings
This study reveals that circular geometry outperforms square geometry in terms of heat flow, fluid flow and heat transfer. The equivalent circular thermal system is more efficient, with heat transfer enhancements of approximately 17.7%. The corresponding irreversibility production rate is also higher, which is up to 17.6%. The total irreversibility production increases with Ra and decreases with a rise in Ha. However, the effect of magnetic field orientation (γ) on total EG is minor.
Research limitations/implications
Further research can explore additional geometric shapes, orientations and boundary conditions to expand the understanding of thermal performance in different configurations. Experimental validation can also complement the numerical analysis presented in this study.
Originality/value
This research introduces a constraint-based approach for evaluating heat transport and irreversibility in MHD nanofluid flow within square and circular thermal systems. The comparison of equivalent geometries and the consideration of constraint-based analysis contribute to the originality and value of this work. The findings provide insights for designing optimal thermal systems and advancing MHD nanofluid flow control mechanisms, offering potential for improved efficiency in various applications.
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John Thomas Flynn and Lloyd Levine
A quick search of the headlines of major newspapers reveals a treasure trove of technology procurement gone wrong. While the private sector seems to adopt and implement new…
Abstract
A quick search of the headlines of major newspapers reveals a treasure trove of technology procurement gone wrong. While the private sector seems to adopt and implement new technology seamlessly and quickly to deliver for customers, the government struggles to accomplish technology purchases and integrations with the same ease. As governments in the United States are looking to retain their current workforce and attract the next generation of workers, the technological capabilities and ethos of governments will be paramount. With nearly every industry being transformed by technology and Generation T being the first generation to have an ingrained “technology first” mindset, the ability of governments to attract these workers depends, in large part, on the ability to transform their government technology culture, policies, and practices.
In this chapter, the authors examine the administrative branch and observe two key components at the root of most technology failures: poor organizational structure in the bureaucracy and the lack of an empowered Chief Information/Technology Officer. Building upon case studies from Massachusetts and California, this chapter looks at the factors related to failure or success to understand the technology procurement culture. The chapter concludes by presenting four key “best practice” principles of public policy and administration that can be implemented by almost any governmental entity to improve their acquisition and implementation of technology.
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Anna-Leena Kurki, Elina Weiste, Hanna Toiviainen, Sari Käpykangas and Hilkka Ylisassi
The involvement of clients in service encounters and service development has become a central principle for contemporary health and social care organizations. However, in…
Abstract
Purpose
The involvement of clients in service encounters and service development has become a central principle for contemporary health and social care organizations. However, in day-to-day work settings, the shift toward client involvement is still in progress. We examined how health and social care professionals, together with clients and managers, co-develop their conceptions of client involvement and search for practical ways in which to implement these in organizational service processes.
Design/methodology/approach
The empirical case of this study was a developmental intervention, the client involvement workshop, conducted in a Finnish municipal social and welfare center. The cultural-historical activity theory (CHAT) framework was used to analyze the development of client involvement ideas and the modes of interaction during the intervention.
Findings
Analysis of the collective discussion revealed that the conceptions of client involvement developed through two interconnected object-orientations: Enabling client involvement in service encounters and promoting client involvement in the service system. The predominant mode of interaction in the collective discussion was that of “coordination.” The clients' perspective and contributions were central aspects in the turning points from coordination to cooperation; professionals crossed organizational boundaries, and together with clients, constructed a new client involvement-based object. This suggests that client participation plays an important role in the development of services.
Originality/value
The CHAT-based examination of the modes of interaction clarifies the potential of co-developing client-involvement-based services and highlights the importance of clients' participation in co-development.
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Arpita Agnihotri and Saurabh Bhattacharya
Leveraging signalling theory and institutional environment theory, this study aims to examine how the entrepreneurial orientation of emerging market firms impacts initial public…
Abstract
Purpose
Leveraging signalling theory and institutional environment theory, this study aims to examine how the entrepreneurial orientation of emerging market firms impacts initial public offering (IPO) performance.
Design/methodology/approach
The authors conduct regression analysis based on archival data from 312 firms’ IPOs in India.
Findings
The results in the Indian context suggest it differs from IPO performance in developed markets. In an emerging market context, the findings suggest that only competitive aggressiveness is valued by investors in IPOs. The findings further show that proactiveness and autonomy negatively influence IPO underpricing.
Research limitations/implications
The research propositions imply that, owing to institutional voids in emerging markets, investors’ risk propensity and, hence, rewarding a firm’s entrepreneurial orientation differ from those in developed markets.
Originality/value
Extant literature has given limited attention to the dynamics of entrepreneurial orientation and the effect of each dimension of entrepreneurial orientation on IPO performance in emerging markets.
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This paper aims to unfold the intricate relations between private law design, the structure of organizations for collective action and cultural values and orientations that…
Abstract
Purpose
This paper aims to unfold the intricate relations between private law design, the structure of organizations for collective action and cultural values and orientations that practically guide interpersonal interactions in Chinese society.
Design/methodology/approach
Drawing upon the Hofstede Insights National Culture survey (The Culture Compass) data and some judicial rulings in China, this paper examines the legislative development and judicial approach to settle condominium disputes to explain and address the cultural orientation for future legal reform. This paper examines how the law reflects and responds to the cultural and social variations/interactions among the stakeholders, namely, local government, developers, homeowner associations, condo owners and property management agents.
Findings
Culture plays a significant role in shaping how condominiums are governed in China. This analysis can highlight the role of cultural factors that influence the success or failure of condominium governance and suggest ways in which governance structures can be adapted to reflect the legal culture of the community better. The emphasis on social harmony, respect for authority, relationships and networks and knowledge and expertise all contribute to a unique approach to condominium governance that reflects the values and priorities of Chinese society.
Originality/value
While much has been written on the importance of property rights to economic development, relatively little seems to be understood about processes of change in complex property systems, particularly in China, a socialist-transforming country. Specifically, there is a lack of reliable knowledge about the intricate relations between the structure of organizations for collective action and cultural orientations that practically guide interpersonal interactions in Chinese society. The question at the heart of this research relates to the condominium rules most suitable for an emerging Chinese private property market.
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The purpose of this research is to further the understanding of how to implement gender-responsive budgeting (GRB) systems. The author explores whether GRB reforms might benefit…
Abstract
Purpose
The purpose of this research is to further the understanding of how to implement gender-responsive budgeting (GRB) systems. The author explores whether GRB reforms might benefit from integration into a performance-oriented budgetary structure and whether GRB's equity orientation is linked to additional implementation challenges.
Design/methodology/approach
This research follows a qualitative case study of South Korea guided by a predetermined research framework and built from extensive documentation, archival records and expert interviews.
Findings
GRB’s integration into a performance framework can be burdensome, and the equity orientation of GRB results in additional implementation challenges, such as higher vulnerability to the political context and active resistance from public officials.
Originality/value
This research shows that integrating GRB with performance systems may require overcoming significant administrative obstacles. Also, GRB’s equity orientation is linked to a higher vulnerability to the political cycle and active resistance from civil servants.
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Tian-Tian Shang, Guang-Mao Dong and Min Tian
Based on the resource bricolage theory, we investigate the impact of proactive market orientation and responsive market orientation on firms’ disruptive green innovation. We also…
Abstract
Purpose
Based on the resource bricolage theory, we investigate the impact of proactive market orientation and responsive market orientation on firms’ disruptive green innovation. We also examine the impact of resource bricolage on disruptive green innovation and the mediating role of resource bricolage.
Design/methodology/approach
Quantitative data were collected from 232 firms in China. Structural equation modelling was used to test hypotheses.
Findings
The result show that proactive market orientation had positive effect on firm’s disruptive green innovation, whereas responsive market orientation had negative effect on firm’s disruptive green innovation. In addition, resource bricolage positively promotes firm’s disruptive green innovation. Resource bricolage played a mediating role between proactive market orientation and disruptive green innovation. Resource bricolage had a suppressing effect between responsive market orientation and disruptive green innovation.
Originality/value
This study makes up for the deficiency of the existing research on the relationship between market orientation and enterprise disruptive green innovation, improves the guidance mechanism of disruptive green innovation.
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