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Article
Publication date: 9 June 2022

Afaq Ahmad, Zahoor Ahmad, Abdullah Ullah, Naveed Ur Ur Rehman, Muhammad Israr, Muhammad Zia, Haider Ali and Ataur Rahman

This study aims to investigate and compare the characteristics of three topologies of moving-magnet linear oscillating actuator (LOA) based on their mover position. Positive…

68

Abstract

Purpose

This study aims to investigate and compare the characteristics of three topologies of moving-magnet linear oscillating actuator (LOA) based on their mover position. Positive aspects and consequences of every topology are demonstrated. Three topologies of axially magnetized moving-magnet LOA; outer mover, inner mover (IM) and dual stator (DS) are designed and examined. Due to its characteristically high thrust density and more mechanical strength, axially magnetized tubular permanent magnets (PMs) are used in these topologies.

Design/methodology/approach

LOAs are designed and optimized using parametric sweep, in term of design parameters and output parameters like thrust force, stroke and operating resonance frequency of the LOA. All the pros and cons of each topology are investigated and compared. Output parameters of the LOAs are compared using same size of the investigated LOAs. Mover mass, which plays a vital role in resonant operation, is analyzed for IM and DS designs. Investigated LOAs are compared with conventional designs of LOA for compressor in refrigeration system with regards of motor constant, stroke and thrust per PM mass.

Findings

This paper analyzes three topologies of moving-magnet LOAs. The basic difference between investigated LOAs is the radius of tubular-shaped mover from its central axis. All the design parameters are compared and concluded that thrust per PM mass of IMLOA is maximum. OMLOA provides maximum motor constant of value 180 N/A. DSLOA provides thrust force with motor constant 120 N/A and required intermediate materials of PMs. All the three designs give the best results in terms of motor constant and thrust per PM mass, compared to conventional designs of LOA.

Originality/value

This paper determines the impact of mover position from its central axis in a tubular-shaped moving-magnet LOA. This work is carried out in correspondence of latest papers of LOA.

Details

World Journal of Engineering, vol. 20 no. 6
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 26 August 2021

Sumeet Khalid, Faisal Khan, Zahoor Ahmad and Basharat Ullah

For compactness and ease in assembling, a novel miniature size tubular moving magnet linear oscillating actuator (MT-MMLOA) design for miniature linear compressor application is…

136

Abstract

Purpose

For compactness and ease in assembling, a novel miniature size tubular moving magnet linear oscillating actuator (MT-MMLOA) design for miniature linear compressor application is proposed in this paper.

Design/methodology/approach

This MT-MMLOA design possesses a modular C-core stator structure having separation at the middle. Axially magnetized tubular permanent magnets are accommodated on the mover. To improve the output parameters of the linear oscillating actuators (LOA), all the design parameters are optimized using a parametric sweep. Finite element analysis of the proposed design is performed to examine the magnetic flux density as well as thrust force under both static and dynamic analysis within the intended stroke range.

Findings

Compared to conventional LOA for miniature compressors, the motor constant of the proposed LOA is 37 N/A that is 85% greater while keeping the same size of LOA. Permanent magnet volume used in the investigated topology of LOA is 26% reduced. Additionally, the overall volume of the machine is 10.3% decreased. Furthermore, the proposed topology is simple, inexpensive and easy to manufacture.

Originality/value

Electromagnetic performance comparison with different topologies proposed earlier in literature is carried out to prove the performance superiority of the proposed design.

Details

World Journal of Engineering, vol. 20 no. 2
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 8 July 2022

Mehtab Khan, Adnan Daud Khan, Muhammad Jawad, Zahoor Ahmad, Naveed Ur Rehman and Muhammad Israr

This paper aims to investigates a novel design of a modular moving magnet linear oscillating actuator (MMM-LOA) with the capability of coupling modules, based on their application…

73

Abstract

Purpose

This paper aims to investigates a novel design of a modular moving magnet linear oscillating actuator (MMM-LOA) with the capability of coupling modules, based on their application and space requirements.

Design/methodology/approach

Proposed design comprised of modules, and modules are separated by using nonmagnetic materials. Movable part of the proposed design of LOA is composed of permanent magnets (PMs) having axial magnetization direction and tubular structure. Stator of the proposed design is composed of one coil individually in a module. Dimensions of the design parameters are optimized through parametric analysis using COMSOL Multi Physics software. This design is analyzed up to three modules and their response in term of electromagnetic (EM) force and stroke are presented. Influence of adding modules is analyzed for both directions of direct current (DC) and alternating input loadings.

Findings

Proposed LOA shows linear increase in magnitude of EM force by adding modules. Motor constant of the investigated LOA is 264 N/A and EM force per PM mass is 452.389 N/kg, that shows significant improvement. Moreover, proposed LOA operates in feasible region of stroke for compressor application. Furthermore, this design uses axially magnetized PMs which are low cost and available in compact tubular structure.

Originality/value

Proposed LOA shows the influence of adding modules and its effect in term of EM force is analyzed for DC and alternating current (AC). Moreover, overall performance and structural topology is compared with state-of-the-art designs of LOA. Improvement with regard of motor constant and EM force per PM mass shows originality and scope of this paper.

Details

World Journal of Engineering, vol. 20 no. 6
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 28 October 2024

Junaid Iqbal and Zahoor Ahmad Parray

This paper aims to how ethical leadership influences innovative behavior and employee motivation, focusing on the mediating role of corporate social responsibility within the…

113

Abstract

Purpose

This paper aims to how ethical leadership influences innovative behavior and employee motivation, focusing on the mediating role of corporate social responsibility within the framework of social exchange theory (SET).

Design/methodology/approach

Data were collected from 341 bank employees using convenience sampling, and hypotheses were rigorously tested with SPSS 22.

Findings

The results highlight the significant impact of ethical leadership on enhancing both employee innovation and motivation, with corporate social responsibility initiatives playing a crucial mediating role.

Originality/value

Drawing on SET, the research illustrates how ethical leadership fosters a reciprocal exchange environment, leading to deeper employee engagement and innovation driven by positive corporate social responsibility practices. By advancing theoretical understanding and providing practical insights, this study offers valuable guidance for organizations aiming to leverage ethical leadership and corporate social responsibility to cultivate a workforce that is both innovative and motivated.

Details

Social Responsibility Journal, vol. 21 no. 2
Type: Research Article
ISSN: 1747-1117

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Article
Publication date: 6 April 2022

Sumeet Khalid, Faisal Khan, Basharat Ullah, Zahoor Ahmad and Siddique Akbar

This paper aims to provide an overview of the recent developments and new topologies of single-phase moving magnet linear oscillating actuators (MMLOAs). The key advantage of the…

239

Abstract

Purpose

This paper aims to provide an overview of the recent developments and new topologies of single-phase moving magnet linear oscillating actuators (MMLOAs). The key advantage of the MMLOA when compared with conventional LOA is the absence of screws, gears and crankshaft mechanism, which results in fewer mechanical parts, simple structure, easy fabrication, lower noise levels and negligible frictional losses.

Design/methodology/approach

The review included papers up to August 2021. The structural designs of alternative topologies are deliberated in detail, and their relative merits and demerits are evaluated. Specific design issues, including pole and tooth number combinations, stroke length, magnet pole ratio and split ratio, are investigated. The imperative phenomena of the resonance, as well as the adjustable stroke, are also discussed in detail.

Findings

The electromagnetic performance in terms of thrust force of selected MMLOA topologies is compared. It is observed that the MMLOA with flux bridge topology has the highest thrust force of 365 N because of the large volume of the permanent magnets (PMs) used, which consequently increased the mass of the mover but based on overall performance analysis, single-phase end ferromagnetic Halbach surface-mounted PM LOA has the highest efficiency around 92%.

Originality/value

This review provides a comparative analysis for different tubular MMLOA topologies based on design construction and their electromagnetic performances.

Details

World Journal of Engineering, vol. 20 no. 5
Type: Research Article
ISSN: 1708-5284

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Article
Publication date: 28 November 2024

Junaid Iqbal and Zahoor Ahmad Parray

This comprehensive study, grounded in social identity theory, aimed to explore the intricate dynamics between clan, adhocracy, hierarchy and market cultures within organizations…

58

Abstract

Purpose

This comprehensive study, grounded in social identity theory, aimed to explore the intricate dynamics between clan, adhocracy, hierarchy and market cultures within organizations, and their respective impacts on organizational citizenship behavior. Furthermore, the research investigated the mediating role of corporate social responsibility in this relationship.

Design/methodology/approach

The study gathered data from 477 bank employees in UT Jammu and Kashmir, utilizing a cluster sampling methodology. SPSS and AMOS were employed to assess the model and hypotheses, thereby strengthening the reliability of the results.

Findings

The findings significantly highlight the influential roles played by clan, adhocracy, hierarchy, and market cultures in shaping organizational citizenship behavior. Moreover, the study underscores the pivotal role of corporate social responsibility as a mediator in the relationship between these organizational culture dimensions and organizational citizenship behavior.

Originality/value

This research enhances the application of social identity theory in organizational settings. It offers valuable insights for managers and supervisors aiming to utilize organizational culture and corporate social responsibility initiatives to improve positive employee behaviors. The practical implications derived from this study provide actionable strategies to optimize workplace dynamics, fostering a culture that promotes organizational citizenship behavior. Ultimately, this contributes to improved organizational performance and employee satisfaction.

Details

International Journal of Productivity and Performance Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1741-0401

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Article
Publication date: 24 October 2024

Junaid Iqbal, Mubashir Ahmad Aukhoon and Zahoor Ahmad Parray

This study examines the complicated relationship between psychological wellbeing, joy at work, creative ability and the mediating influence of psychological capital, drawing…

92

Abstract

Purpose

This study examines the complicated relationship between psychological wellbeing, joy at work, creative ability and the mediating influence of psychological capital, drawing insights from self-determination theory within the context of the banking sector.

Design/methodology/approach

The study utilized random sampling to gather comprehensive data from 465 banking employees. Following data collection, structural equation modeling was employed to test the hypotheses formulated based on the collected data.

Findings

Findings underscore a significant association between psychological wellbeing and both joy at work and creative ability within the banking sector. Moreover, the study elucidates that psychological capital acts as a crucial mediator, illuminating the pathway through which psychological wellbeing influences joy at work and subsequently enhances creative ability.

Practical implications

This research offers valuable insights for organizational leaders and policymakers, emphasizing the imperative of prioritizing psychological wellbeing initiatives and nurturing positive work environments to enhance employee satisfaction, productivity and innovative contributions within the banking sector.

Originality/value

The application of self-determination theory as a theoretical framework provides a robust foundation for understanding the dynamics between psychological factors and workplace outcomes. The banking industry, often characterized by high stress levels and demanding work environments, stands to benefit substantially from interventions aimed at fostering psychological wellbeing. By cultivating positive mental health and capitalizing on joy at work, organizations can stimulate employee creativity ability, thereby fostering innovation and adaptive problem-solving capabilities crucial in the contemporary banking landscape.

Details

Journal of Organizational Effectiveness: People and Performance, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2051-6614

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Article
Publication date: 23 September 2024

Tanveer Ahmad Shah, Murugan Pattusamy and Zahoor Ahmad Parray

The purpose of this study is to offer insight into present dynamics and study diversification in the field of organizational psychology. This research study offers an organized…

85

Abstract

Purpose

The purpose of this study is to offer insight into present dynamics and study diversification in the field of organizational psychology. This research study offers an organized and critical examination of the construct of psychological detachment using bibliometric analysis.

Design/methodology/approach

This study was done using the Scopus database based on studies published between 2006 and 2024. The significance of the research is evaluated by looking at the distribution volume, the trajectory of the publication, statistics techniques, extremely cited articles, journals, most frequently used keywords, research themes, subthemes clusters and thematic overview of the psychological detachment corpus created based on bibliographic coupling. Furthermore, content analysis of recent publications to identify new developments and potential gaps in the existing literature.

Findings

This research first tracked the development of this discipline’s body of literature through time and discovered a continuous rise starting in 2015. The results also highlighted crucial concepts that were studied with psychological detachment, such as work-life balance, employment outcomes, emotional exhaustion and various other demographic variables. Researchers chose to concentrate on those subtopics throughout time.

Research limitations/implications

This research relied solely on Scopus data, which, despite being the largest abstract and citation database covering articles from a wide range of fields, does not include Impact Factor or Social Science Citation Index (SSCI) data, which is one of the limitation.

Practical implications

The findings of this research study will assist organizations and practitioners in comprehending the implications of psychological detachment construct at their workplace and give them direction on how they come out from negative job-related outcomes (employee job stress, turnover intention and burnouts at their respective workplaces).

Originality/value

This study offers a diversity of study topics across the psychological detachment literature by applying a variety of bibliographical mapping techniques, making it the first of its type on the topic of psychological detachment. It also indicates promising avenues for further investigation.

Details

Global Knowledge, Memory and Communication, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2514-9342

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Article
Publication date: 10 April 2024

Mubashir Ahmad Aukhoon, Junaid Iqbal and Zahoor Ahmad Parray

The primary objective of this study was to understand the impact of Corporate Social Responsibility on Employee Green Behavior, examining the mediating role played by Green Human…

777

Abstract

Purpose

The primary objective of this study was to understand the impact of Corporate Social Responsibility on Employee Green Behavior, examining the mediating role played by Green Human Resource Management Practices and the moderating influence of Employee Green Culture.

Design/methodology/approach

To accomplish this, a careful research approach was taken, using a thoughtfully designed random sampling method to encompass 300 banking employees, ensuring a robust representation of the diverse workforce in the banking sector.

Findings

The empirical findings identified green human resource management practices as a pivotal mediator and employee green culture as a significant moderator. It elucidated how the strategic implementation of green human resource management practices can act as an amplifier, strengthening the positive effects of corporate social responsibility on employee green behavior. This insight underscores the strategic importance of aligning human resource practices with sustainability goals to further enhance the environmental consciousness of employees. It was revealed that the presence of a nurturing organizational culture, one that encourages and supports environmentally responsible behaviors can significantly bolster the association between corporate social responsibility and green behavior among employees.

Originality/value

These findings underscore the essential role of organizational culture as a catalyst for the successful implementation of corporate social responsibility initiatives and the cultivation of a sustainable corporate ethos. This comprehensive research underscores the profound significance of corporate social responsibility, green human resource management practices and employee green culture in fostering and promoting environmentally responsible behaviors within the banking industry. These findings hold substantial implications not only for businesses but also for policymakers.

Details

Evidence-based HRM: a Global Forum for Empirical Scholarship, vol. 12 no. 4
Type: Research Article
ISSN: 2049-3983

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Article
Publication date: 1 August 2023

Zahoor Ahmad Parray, Shahbaz ul Islam and Tanveer Ahmad Shah

The main goal of this research study is to look at the mediating effect of emotional exhaustion in the association between workplace incivility and job outcomes (job stress, job…

786

Abstract

Purpose

The main goal of this research study is to look at the mediating effect of emotional exhaustion in the association between workplace incivility and job outcomes (job stress, job satisfaction and employee turnover intentions) in the higher education sector.

Design/methodology/approach

The authors gathered field data from individuals working in the Higher Education Sector of Jammu and Kashmir to test the proposed study paradigm. A total of 550 respondents reported their perceptions of workplace incivility, emotional exhaustion and job-related outcomes (job stress, job satisfaction and employee turnover intention) at Time 1 in the Kashmir division and Time 2 in the Jammu division of Jammu and Kashmir via a two-wave data collection design.

Findings

The findings supported the hypothesized relationships, demonstrating that emotional exhaustion acts as a mediator between workplace incivility and employee job outcomes (job stress, employee job satisfaction and employee intention to leave).

Research limitations/implications

The research was undertaken in Jammu and Kashmir's higher education sectors. As a result, the findings may not apply to other sectors because workplace incivility may be regarded differently in different sectors.

Practical implications

The findings of this research study will assist organizations and practitioners in comprehending the significance of workplace incivility and emotional exhaustion, as well as how they positively impact job-related outcomes (employee job stress, turnover intention) and negatively on job satisfaction.

Originality/value

This research study added to the existing Self-Determination Theory model developed by Deci and associates (2017) by incorporating Emotional Exhaustion, and workplace incivility as autonomous intrinsic and workplace context factors respectively into the SDT model to study work behaviors in terms of job outcomes. This study adds to existing knowledge on SDTs by suggesting and testing emotional exhaustion as a mechanism for determining the impact of workplace incivility on employee job outcomes.

Contribution to impact

Details

International Journal of Educational Management, vol. 37 no. 5
Type: Research Article
ISSN: 0951-354X

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