Search results

1 – 10 of 121
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…

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

Keywords

Article
Publication date: 25 June 2020

Muhammad Jawad Malik, Mudaser Ahmad, Muhammad Rizwan Kamran, Komal Aliza and Muhammad Zubair Elahi

The purpose of this paper is to investigate the relationships between students’ use of social media, their academic performance and creativity in the digital era.

2473

Abstract

Purpose

The purpose of this paper is to investigate the relationships between students’ use of social media, their academic performance and creativity in the digital era.

Design/methodology/approach

This research used a survey strategy for collecting primary data required for this study from 334 students of undergraduate programs at Chinese universities who were sampled through a non-probability convenience approach.

Findings

The findings of the study reveal that students’ use of social media is positively associated with students’ academic performance and creativity. In addition, intrinsic motivation was found to be a mediating reason in the relationships between students’ use of social media and students’ academic performance and creativity.

Originality/value

This study explored an important role of intrinsic motivation as a mediator in the relationships between students’ use of social media and their positive outcomes. Studying the use of social media by students to their positive study outcomes is also practically important for students, educationalists and other policymakers.

Details

Interactive Technology and Smart Education, vol. 17 no. 4
Type: Research Article
ISSN: 1741-5659

Keywords

Open Access
Article
Publication date: 3 April 2020

Muhammad Jawad Sajid, Qingren Cao, Ming Cao and Shuang Li

Presentation of the different industrial carbon linkages of India. The purpose of this paper is to understand the direct and indirect impact of these industrial linkages.

1430

Abstract

Purpose

Presentation of the different industrial carbon linkages of India. The purpose of this paper is to understand the direct and indirect impact of these industrial linkages.

Design/methodology/approach

This study uses a hypothetical extraction method with its various extensions. Under this method, different carbon linkages of a block are removed from the economy, and the effects of carbon linkages are determined by the difference between the original and the post-removal values. Energy and non-energy carbon linkages are also estimated.

Findings

“Electricity, gas and water supply (EGW)” at 655.61 Mt and 648.74 Mt had the highest total and forward linkages. “manufacturing and recycling” at 231.48 Mt had the highest backward linkage. High carbon-intensive blocks of “EGW” plus “mining and quarrying” were net emitters, while others were net absorbers. “Fuel and chemicals” at 0.08 Mt had almost neutral status. Hard coal was the main source of direct and indirect emissions.

Practical implications

Net emitting and key net forward blocks should reduce direct emission intensities. India should use its huge geographical potential for industrial accessibility to cheaper alternative energy. This alongside with technology/process improvements catalyzed by policy tools can help in mitigation efforts. Next, key net-backward blocks such as construction through intermediate purchases significantly stimulate emissions from other blocks. Tailored mitigation policies are needed in this regard.

Originality/value

By developing an understanding of India’s industrial carbon links, this study can guide policymakers. In addition, the paper lays out the framework for estimating energy and non-energy-based industrial carbon links.

Details

International Journal of Climate Change Strategies and Management, vol. 12 no. 3
Type: Research Article
ISSN: 1756-8692

Keywords

Open Access
Article
Publication date: 12 April 2024

Muhammad Jawad Haider, Maqsood Ahmad and Qiang Wu

This study examines the impact of debt maturity structure on stock price crash risk (SPCR) in Asian economies and the moderating effect of firm age on this relationship.

Abstract

Purpose

This study examines the impact of debt maturity structure on stock price crash risk (SPCR) in Asian economies and the moderating effect of firm age on this relationship.

Design/methodology/approach

The study utilized annual data from 432 nonfinancial firms publicly listed in six Asian countries: China, Hong Kong, Japan, Singapore, Pakistan and India. The observation period covers 14 years, from 2007 to 2020. The sample was categorized into three groups: the entire sample and one group each for developing and developed Asian economies. A generalized least squares panel regression method was employed to test the research hypotheses.

Findings

The results suggest that long-term debt has a significant negative influence on SPCR in Asian economies, indicating that firms with high long-term debt experience lower future SPCR. Moreover, firm age negatively moderates this relationship, implying that older firms may experience a more pronounced reduction in SPCR due to high long-term debt. Finally, firms in developed Asian economies with high long-term debt are more effective in mitigating the risk of a significant drop in their stock prices than firms in developing Asian economies.

Originality/value

This study contributes to the literature in several ways. To the best of the researcher’s knowledge, this is the first of such efforts to investigate the relationship between debt maturity structure and crash risk in Asia. Additionally, it reveals that long-term debt influences SPCR directly and indirectly in Asia through the moderating role of firm age. Lastly, it is likely one of the first studies by a research team in Asia to compare the nonfinancial markets of developed and developing Asian countries.

Details

Journal of Asian Business and Economic Studies, vol. 31 no. 4
Type: Research Article
ISSN: 2515-964X

Keywords

Article
Publication date: 14 September 2023

Muhammad Jawad Haider, Maqsood Ahmad and Qiang Wu

This study examines the influence of investor protection on stock price crash risk (SPCR) in Asian economies.

Abstract

Purpose

This study examines the influence of investor protection on stock price crash risk (SPCR) in Asian economies.

Design/methodology/approach

This study used yearly data from 432 nonfinancial companies publicly listed firms in six countries (i.e., China, India, Pakistan, Hong Kong, Japan and Singapore) from 2007 to 2020 to investigate the relationship between investor protection and the risk of stock price crashes. The hypothesis was tested using a generalized least square panel regression.

Findings

The results suggest that investor protection significantly affects SPCR in Asian economies. Furthermore, the findings show that the stocks of firms whose investors received the best protection were less prone to crash in developed Asian economies. However, in developing Asian economies, the stocks of firms whose investors received the best protection were more prone to crashes.

Practical implications

It provides awareness and understanding of how the level of investor protection affects SPCR, which could be useful for decision-makers and professionals across a spectrum of financial and non-financial institutions, such as portfolio managers and traders in commercial banks, investment banks and mutual funds. This knowledge enables informed decision-making and the formulation of effective policies to manage stock market volatility.

Originality/value

This study appears to be the first of its kind to focus on the link between investor protection and SPCR within the specific context of developed and developing Asian economies.

Details

Kybernetes, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 9 February 2023

Qasim Zaheer, Mir Majaid Manzoor and Muhammad Jawad Ahamad

The purpose of this article is to analyze the optimization process in depth, elaborating on the components of the entire process and the techniques used. Researchers have been…

Abstract

Purpose

The purpose of this article is to analyze the optimization process in depth, elaborating on the components of the entire process and the techniques used. Researchers have been drawn to the expanding trend of optimization since the turn of the century. The rate of research can be used to measure the progress and increase of this optimization procedure. This study is phenomenal to understand the optimization process and different algorithms in addition to their application by keeping in mind the current computational power that has increased the implementation for several engineering applications.

Design/methodology/approach

Two-dimensional analysis has been carried out for the optimization process and its approaches to addressing optimization problems, i.e. computational power has increased the implementation. The first section focuses on a thorough examination of the optimization process, its objectives and the development of processes. Second, techniques of the optimization process have been evaluated, as well as some new ones that have emerged to overcome the above-mentioned problems.

Findings

This paper provided detailed knowledge of optimization, several approaches and their applications in civil engineering, i.e. structural, geotechnical, hydraulic, transportation and many more. This research provided tremendous emerging techniques, where the lack of exploratory studies is to be approached soon.

Originality/value

Optimization processes have been studied for a very long time, in engineering, but the current computational power has increased the implementation for several engineering applications. Besides that, different techniques and their prediction modes often require high computational strength, such parameters can be mitigated with the use of different techniques to reduce computational cost and increase accuracy.

Details

Engineering Computations, vol. 40 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 15 June 2021

Taza Gul, Abdul Qadeer, Wajdi Alghamdi, Anwar Saeed, Safyan Mukhtar and Muhammad Jawad

This paper aims to consider the heat transportation together with irreversibility analysis for the flow of couple stress hybrid nanofluid past over a stretching surface. The…

Abstract

Purpose

This paper aims to consider the heat transportation together with irreversibility analysis for the flow of couple stress hybrid nanofluid past over a stretching surface. The innovative characteristics of this paper include electro-magnetohydrodynamic (EMHD) term, viscous dissipation, Joule heating and heat absorption\omission. The hybrid nanofluid is prepared due to the suspension of the solid nanoparticles of the single wall and multi-wall carbon nanotubes (SWCNTs and MWCNTs) in the blood for the testing purpose of heat transfer and drug deliveries. The experimental value of the Prandtl number used for the blood is 21 from the available literature and very large as compared to the Prandtl number of the other base fluids. Appropriate transformations are incorporated to convert the modeled partial differential equations into the nonlinear ordinary differential equations. The homotopy analysis method (HAM) is used to obtain the solution. The explanation for velocity, energy and entropy are exposed under the influence of various parameters such as E, M, k, Q, S and Ec. The numerical values are calculated and summarized for dimensionless Cf and Nu.

Design/methodology/approach

In this investigation, heat transportation together with irreversibility analysis for the flow of couple stress hybrid nanofluid past over a stretching surface is considered. The innovative characteristics of this paper include EMHD term, viscous dissipation, Joule heating and heat absorption\omission. The hybrid nanofluid is prepared due to the suspension of the solid nanoparticles of the SWCNTs and MWCNTs in the blood for the testing purpose of heat transfer and drug deliveries. The experimental value of the Prandtl number used for the blood is 21 from the available literature and very large as compared to the Prandtl number of the other base fluids. Appropriate transformations are incorporated to convert the modeled partial differential equations into the nonlinear ordinary differential equations. The HAM is used to obtain the solution. The explanation for velocity, energy and entropy are exposed under the influence of various parameters such as E, M, k, Q, S and Ec. The numerical values are calculated and summarized for dimensionless Cf and Nu.

Findings

The explanation for velocity, energy and entropy are exposed and the flow against various influential factors is discussed graphically. The numerical values are calculated and summarized for dimensionless In addition, the current study is compared for various values of to that published literature and an impressive agreement in terms of finding is reported. It has also been noticed that the and factors retards the hybrid nanofluid flow, while the temperature of fluid becomes upsurges by the rise in these factors.

Originality/value

This is examined while evaluating the previously discussed publications that study on EMHD aspects of magnetized Casson type hybrid nanofluid via entropy generation research is innovative but also acknowledging that the couple stress model challenged bilaterally on stretching surface has not yet been studied. So, there is an ongoing attempt to bridge such a space.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 32 no. 2
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 28 February 2024

Muhammad Zada, Jawad Khan, Imran Saeed, Shagufta Zada and Zhang Yong Jun

The purpose of this study is to investigate the relationship between sustainable leadership and sustainable project performance. Specifically, the study aims to examine the…

Abstract

Purpose

The purpose of this study is to investigate the relationship between sustainable leadership and sustainable project performance. Specifically, the study aims to examine the mediating role of knowledge integration, examining how knowledge integration within an organization influences project outcomes. In addition, the study seeks to explore the moderating role of top management knowledge values, examining how the values and beliefs of top management influence the relationship between sustainable leadership and project performance.

Design/methodology/approach

A three-wave survey of 392 employees working in construction sector projects in Pakistan used both hierarchical regression analysis and Hayes’ PROCESS macro method to evaluate the hypotheses.

Findings

The study results show that sustainable leadership positively relates to sustainable project performance and knowledge integration mediating this relationship. In addition, the top management knowledge value moderates the indirect effect of sustainable leadership on sustainable project performance via knowledge integration.

Research limitations/implications

Although the model was tested using three-wave data, it is important to note that the data were obtained from a single source. Therefore, it is possible that common method bias may have influenced the results, and this cannot be disregarded.

Practical implications

Organizations seek to prioritize sustainability and integrate sustainability considerations into their project management processes. Organizations can achieve improved sustainable project performance by investing in sustainable leadership development, fostering a culture of knowledge sharing and learning, prioritizing top management support for sustainable performance and integrating sustainable considerations into project management processes.

Originality/value

The study’s grounding on organizational learning theory adds an original and valuable perspective to the relationship between sustainable leadership and sustainable project performance. This investigation is original, as it combines sustainable leadership, knowledge integration and the moderating role of top management knowledge value to understand their impact on sustainable project performance. This unique approach contributes to the literature by providing new insights into these relationships and mechanisms in the construction industry.

Details

Journal of Knowledge Management, vol. 28 no. 6
Type: Research Article
ISSN: 1367-3270

Keywords

Article
Publication date: 4 January 2013

Muhammad Jawad Hashim, Adrianna Prinsloo and Deen M. Mirza

Chronic disease services may be improved if care management processes (CMPs), such as disease‐specific flowsheets and chronic disease registries, are used. The newly…

555

Abstract

Purpose

Chronic disease services may be improved if care management processes (CMPs), such as disease‐specific flowsheets and chronic disease registries, are used. The newly industrialized Gulf state health service has underdeveloped primary care but higher diabetes prevalence. This paper's aim is to investigate care management processes in United Arab Emirates (UAE) primary care clinics to explore these issues.

Design/methodology/approach

A cross‐sectional survey using self‐administered questionnaires given to family physicians and nurses attending a UAE University workshop was used to collect data.

Findings

All 38 participants completed the questionnaire: 68 per cent were women and 81 per cent physicians. Care management processes in use included: medical records, 76 per cent; clinical guidelines, 74 per cent; chronic disease care rooms, 74 per cent; disease‐specific flowsheets, 61 per cent; medical record audits, 57 per cent; chronic disease nurse‐educators, 58 per cent; electronic medical records (EMR), 34 per cent; and incentive plans based on clinical performance, 21 per cent. Only 62 per cent and 48 per cent reported that flowsheets and problem lists, respectively, were completed by physicians. Responses to the open‐ended question included using traditional quality improvement (QI) approaches such as continuing education and staff meetings, but not proactive systems such as disease registries and self‐management.

Research limitations/implications

The study used a small, non‐random sample and the survey instrument's psychometric properties were not collected.

Practical implications

Chronic disease care CMPs are present in UAE clinics but use is limited. Quality improvement should include disease registries, reminder‐tracking systems, patient self‐management support and quality incentives.

Originality/value

This report highlights the lag regarding adopting more effective CMPs in developing countries.

Details

International Journal of Health Care Quality Assurance, vol. 26 no. 1
Type: Research Article
ISSN: 0952-6862

Keywords

Article
Publication date: 22 October 2020

Alexander Preko, Azizbek Allaberganov, Iddrisu Mohammed, Martins Albert and Robert Amponsah

This study aims to explore the country-specific understanding of Hajj, its experience and challenges between the pilgrims of Ghana and Uzbekistan.

Abstract

Purpose

This study aims to explore the country-specific understanding of Hajj, its experience and challenges between the pilgrims of Ghana and Uzbekistan.

Design/methodology/approach

Anchored on the theory of constructivism, this study explored and used the purposive sampling method in the context of qualitative research to select 97 Muslim pilgrims from Ghana and Uzbekistan of varying demographics for in-depth interviews.

Findings

Findings show that the philosophy of Hajj as the fifth pillar obligation set by Allah was common among the Muslim pilgrims of these two countries which support earlier literature. Interestingly, this study uncovered some distinctions in the construction of the understanding of Hajj; that is Ghanaian pilgrims have attached social status of respect and titles to Hajj in their societies. While Uzbekistan pilgrims are seen in their communities as spiritual role models that inspire others to live meaningful lives in the society.

Research limitations/implications

The conclusion and the outcome of this study cannot be generalized as to represent the whole population of Ghana and Uzbekistan due to qualitative approach.

Practical implications

This study revealed country-specific understanding and experience of Hajj that can be used by the policymakers and marketers to create better travel package.

Originality/value

The outcome of this study advanced a cross-cultural Hajj understanding which is important to policymakers, businesses and spiritual tourism practitioners to have a better insight into Hajj in contexts.

Details

Journal of Islamic Marketing, vol. 13 no. 2
Type: Research Article
ISSN: 1759-0833

Keywords

1 – 10 of 121