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Article
Publication date: 31 July 2019

Waqar Azeem Khan, Mehboob Ali, Muhammad Waqas, M. Shahzad, F. Sultan and M. Irfan

This paper aims to address the flow of Sisko nanofluid by an unsteady curved surface. Non-uniform heat source/sink is considered for heat transfer analysis.

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Abstract

Purpose

This paper aims to address the flow of Sisko nanofluid by an unsteady curved surface. Non-uniform heat source/sink is considered for heat transfer analysis.

Design/methodology/approach

Numerical solutions are constructed using bvp4c procedure.

Findings

Pressure profile inside boundary region is increased when A and K are enhanced.

Originality/value

No such analysis is yet presented.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 29 no. 12
Type: Research Article
ISSN: 0961-5539

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Article
Publication date: 12 October 2020

Mehboob Ali, F. Sultan, Waqar Azeem Khan, M. Shahzad, Hina Arif and M. Irfan

The purpose of this paper is to investigate the heat transportation rate by using Cattaneo–Christov heat flux model. Furthermore, homogeneous-heterogeneous reaction is also…

38

Abstract

Purpose

The purpose of this paper is to investigate the heat transportation rate by using Cattaneo–Christov heat flux model. Furthermore, homogeneous-heterogeneous reaction is also deliberated in the modeling of concentration expression.

Design/methodology/approach

The nonlinear PDEs are reduced to ODEs via implementation of applicable transformations. Numerical scheme bvp4c is used to obtain convergent solutions.

Findings

The main findings are to characterize the generalized Fourier’s heat flux and homogeneous-heterogeneous reactions in 3D flow of non-Newtonian cross fluid.

Originality/value

It is to certify that this paper is neither published earlier nor submitted elsewhere.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 31 no. 11
Type: Research Article
ISSN: 0961-5539

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Publication date: 14 December 2023

Eman Zameer Rahman and Syed Haider Ali Shah

This chapter examines the significance of green innovation and technologies for sustainable business in Asia, focussing on the issues and challenges confronted by contemporary…

Abstract

This chapter examines the significance of green innovation and technologies for sustainable business in Asia, focussing on the issues and challenges confronted by contemporary sustainable business models. The concept of sustainable development is introduced, which seeks to minimize negative impacts on ecosystems and preserve the environment for future generations. This chapter's methodology entails a comprehensive review of existing literature and research on green innovation, green technology, and sustainable business models in Asia. The expansion of ‘green’ energy is directly proportional to the global demand for energy resources. Understanding how green innovation influences a company's capacity for sustainable development is essential for identifying the factors that influence sustainable business models and their economic consequences. Green innovation practices encompass a variety of factors, including government regulations, preferences, supplier competence, and consumer concerns. Green technologies, such as green human resource management (HRM) practices and green innovation practices, play a crucial role in attaining sustainable development by conserving energy, protecting the environment, and enhancing business efficiency. Businesses that adopt green innovation acquire a competitive edge and enhance their performance. This chapter emphasizes the importance of green innovation research and application for business stability in Asia, where sustainability and green concepts are acquiring momentum. Customer, government, and societal pressures further emphasize the significance of green innovation in businesses. For the success of ecological innovation practices, collaboration and knowledge-sharing among various stakeholders are crucial. The adoption of green innovation practices is influenced by external environmental impacts, stakeholder pressure, and organizational support. Green technology innovation, which concentrates on resource conservation, energy efficiency, and environmental protection, is crucial to the sustainability of a business. This chapter concludes by emphasizing the importance of business sustainability in achieving environmental and economic goals and assuring sustainable corporate development. Long-term success requires an understanding of the process of value creation, delivery, and capture within sustainable business models.

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Article
Publication date: 8 November 2024

Md Mahmudul Hasan, Md Moznuzzaman, Akash Shaha and Imran Khan

Previous studies emphasized the substantial energy-saving potential of light emitting diode (LED) lighting systems, especially in the clothing industry. However, the specific…

33

Abstract

Purpose

Previous studies emphasized the substantial energy-saving potential of light emitting diode (LED) lighting systems, especially in the clothing industry. However, the specific quantification of energy conservation potential in industrial factories, particularly in Bangladesh’s readymade garment (RMG) sector, remains unexplored. The purpose of this study is to investigate the potential energy savings and efficiency improvements of lighting systems in Bangladesh’s RMG sector using LED technology.

Design/methodology/approach

Understanding and optimizing energy consumption is crucial in the RMG sector because this sector contributes significantly to the country’s export earnings. For this, an RMG factory was surveyed and possible lighting system retrofitting was estimated and compared.

Findings

The adoption of energy-efficient lighting options, particularly LED, could decrease the current lighting energy usage from 15% to 7.5% in Bangladesh. First, this study reveals, that the reduction of annual energy consumption was determined to be 18,220 kWh due to the retrofitting of the lighting system with LED tube. Second, it conducts real-time measurements to assess the suitability of in-building lighting systems, providing insights into the current scenario. Lastly, it evaluates the economic and environmental benefits of the proposed lighting system in the RMG industries. Due to the retrofitting of the lighting system, the reduction of equivalent CO2 gas emissions was found to be 119.896 tCO2.

Originality/value

For the first time, this study explored the potential for enhancing energy-efficient lighting system design through retrofitting in the RMG industry, with a focus on Bangladesh. By addressing these aspects, this study aims to contribute to the advancement of energy efficiency and conservation efforts in the RMG sector, ultimately fostering sustainable industrial development in Bangladesh and beyond.

Details

International Journal of Energy Sector Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1750-6220

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Article
Publication date: 24 July 2024

Ali Nawaz Khan, Hammad S. Saleh Alotaibi and Zain Ali Raza

The purpose of this study is to assess how Sustainable food consumption (SFC) can improve the quality of life for consumers and encourage green food production. Sustainable…

148

Abstract

Purpose

The purpose of this study is to assess how Sustainable food consumption (SFC) can improve the quality of life for consumers and encourage green food production. Sustainable consumption is an important factor in achieving the sustainable development goals (SDGs) proposed by the United Nations. However, achieving SFC requires government policies, consumer environmental values and accessible channels.

Design/methodology/approach

This paper investigates how to promote SFC intentions using a sample of 386 students from Chinese universities. By using SPSS Process software, this study developed and tested a theoretical model grounded in the stimulus-organism-response (SOR) framework.

Findings

The findings indicate that environmental emotions mediate the relationship between sustainability knowledge and SFC intentions. Contextual factors such as green self-efficacy (GSE) moderate both the direct relationship between environmental emotions and SFC intentions and the indirect relationship between sustainability knowledge and SFC intentions via environmental emotions. The paper continues with a discussion of the findings and their practical implications.

Originality/value

This paper applied the SOR model to the context of students’ sustainability knowledge and SFC intentions. This also presents environmental emotions as a mediation variable, and green self-efficacy as a moderating factor, and constructs the moderated mediation model. This is one of the novel contributions to the literature on SFC intentions and sustainability knowledge.

Details

International Journal of Sustainability in Higher Education, vol. 26 no. 2
Type: Research Article
ISSN: 1467-6370

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Article
Publication date: 2 May 2024

Alamgir Khan, Javed Iqbal and Rasool Shah

This study presents a two-step numerical iteration method specifically designed to solve absolute value equations. The proposed method is valuable and efficient for solving…

134

Abstract

Purpose

This study presents a two-step numerical iteration method specifically designed to solve absolute value equations. The proposed method is valuable and efficient for solving absolute value equations. Several numerical examples were taken to demonstrate the accuracy and efficiency of the proposed method.

Design/methodology/approach

We present a two-step numerical iteration method for solving absolute value equations. Our two-step method consists of a predictor-corrector technique. The new method uses the generalized Newton method as the predictor step. The four-point open Newton-Cotes formula is considered the corrector step. The convergence of the proposed method is discussed in detail. This new method is highly effective for solving large systems due to its simplicity and effectiveness. We consider the beam equation, using the finite difference method to transform it into a system of absolute value equations, and then solve it using the proposed method.

Findings

The paper provides empirical insights into how to solve a system of absolute value equations.

Originality/value

This paper fulfills an identified need to study absolute value equations.

Details

Engineering Computations, vol. 41 no. 3
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 2 November 2010

Habib‐Uz‐Zaman Khan and Rashidozzaman Khan

The purpose of this paper is to examine the extent of human capital (HC) reporting in leading Bangladeshi firms using the HC reporting framework, thereby making a contribution to…

1517

Abstract

Purpose

The purpose of this paper is to examine the extent of human capital (HC) reporting in leading Bangladeshi firms using the HC reporting framework, thereby making a contribution to the body of knowledge in the area of HC reporting practice in a developing country context.

Design/methodology/approach

Using the technique of content analysis, three years of annual reports of 32 leading manufacturing and service sector companies listed on the Dhaka Stock Exchange (DSE), selected on the basis of the market capitalization, were examined to identify any HC reporting trends.

Findings

The findings reveal that the HC reporting practices of leading Bangladeshi firms are not as low as projected in relation to the total list of items reported. The most commonly disclosed HC items are information on employee training, number of employees, career development and opportunities that firms provide, and employee recruitment policies. Moreover, as a result of a degree of intervention on the part of some Bangladeshi regulators, the extent of reporting has increased during 2009/2010.

Research limitations/implications

The principal limitations of the study are that it is based on a small non‐random sample of firms taken from a single country and drawing solely annual reporting information.

Originality/value

This is the first paper that documents HC‐related disclosures in the context of a transitional economy such as Bangladesh using multi year‐data. The study contributes to the HC literature by providing empirical evidence of the status of HC reporting in a developing country context.

Details

Journal of Human Resource Costing & Accounting, vol. 14 no. 4
Type: Research Article
ISSN: 1401-338X

Keywords

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Article
Publication date: 7 January 2025

Ali Raza, Umair Khan, Aurang Zaib, Anuar Ishak and Syed Modassir Hussain

This article identifies hybrid nanofluids and industrial thermal engineering devices as significant sources of solar energy. In this study, various nanoparticles suspended in base…

19

Abstract

Purpose

This article identifies hybrid nanofluids and industrial thermal engineering devices as significant sources of solar energy. In this study, various nanoparticles suspended in base fluids such as water (H2O) and carboxymethyl cellulose (CMC), along with nanoparticles like graphene oxide (GO) and molybdenum disulfide (MoS2), are examined. The model also incorporates permeability and the effects of angled magnetic fields to provide a comprehensive analysis.

Design/methodology/approach

We have utilized the fractal fractional operator definition, the quickest and most advanced fractional approach, to address the problems with the hybrid nanofluid suspension. The integral transform scheme, i.e. the Laplace transform, converts the governing equations into a fractional form before various numerical methods are applied to solve the problem. Further, some numerical schemes to address the Laplace inverse are also utilized.

Findings

The fractional effects on flow rate and heat transfer are evident at varying time intervals. Consequently, we conclude that as the fractal constraints increase, the momentum and heat profiles decelerate. Furthermore, all necessary conditions are satisfied, resulting in the momentum and temperature fields decreasing near the plate and increasing over time. Additionally, the water-based (H2O + Go + MoS2) solution exhibits a more pronounced impact compared to the CMC-based (CMC + Go + MoS2) hybrid suspension.

Practical implications

The findings could be very useful in enhancing the efficiency of thermal systems. These findings align more accurately with conventional solutions and can be used to build and optimize various heat management strategies.

Originality/value

The primary goals of this research are to examine the thermal and flow properties of hybrid nanofluids for manufacturing purposes of thermal engineering equipment utilizing fractal fractional definition. Further, to improve thermal system productivity by applying sophisticated fractional techniques to better and maximize heat and momentum transmission in these hybrid nanofluid solutions

Details

Multidiscipline Modeling in Materials and Structures, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1573-6105

Keywords

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Article
Publication date: 19 September 2023

Mukaram Ali Khan, Kashif Rathore, Syed Sohaib Zubair, Aamna Tariq Mukaram and Kareem M. Selem

The study aims to investigate the effect of entrepreneurial leadership (EL), competencies (ECs) and intentions (EIs) on enterprise performance (EP) via entrepreneurial resilience…

626

Abstract

Purpose

The study aims to investigate the effect of entrepreneurial leadership (EL), competencies (ECs) and intentions (EIs) on enterprise performance (EP) via entrepreneurial resilience (ER) and risk-taking propensity (RTP).

Design/methodology/approach

Data were collected from 403 early-stage small and medium enterprise (SME) owners in Pakistan at two-time intervals and were analyzed using AMOS 22.

Findings

All predictors (i.e. EIs, EL and ECs) positively affected EP and ER, except for EL and ER. Furthermore, RTP and ER were serially mediated in linking EIs and ECs with EP but could not establish a link between EL and EP.

Research limitations/implications

The findings reveal that the Pakistani government and business owners must focus on SMEs’ sustained development and prioritize ECs.

Originality/value

This paper is unique in nature, as understanding EIs, EL and ECs in a holistic framework has never been tested before in relation to EP.

Details

European Business Review, vol. 36 no. 2
Type: Research Article
ISSN: 0955-534X

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Article
Publication date: 15 October 2024

Muhammad Ijaz Khan, Muhammad Riaz, Khaled Abd El-Aziz, M. Sana Ullah Sahar, Mumtaz Ahmed Qaisrani and Hafiz Tauqeer Ali

The study highlights our findings, including the confirmation of phase stability through XRD analysis, the characterization of optical properties revealing high absorption and…

35

Abstract

Purpose

The study highlights our findings, including the confirmation of phase stability through XRD analysis, the characterization of optical properties revealing high absorption and conductivity and the analysis of mechanical stability through elastic constants. Additionally, we present detailed results on the band gap, EELS analysis and the suitability of SrZrO3 perovskite oxides for next-generation optoelectronic devices.

Design/methodology/approach

Cubic SrZrO3 perovskite oxides were designed within the framework of density functional theory (DFT) via the CASTEP code under varying stress conditions (0–100 GPa), aiming to explore the key properties for diverse applications. The phase stability was confirmed by XRD analysis. From 0 to 40 GPa, there is an increase in the band gap from 3.330 to 3.615 eV, while it narrows from 3.493 to 3.155 eV beyond 60 GPa. The optical characteristics revealed high absorption, superior conductivity and a lower loss function. Significantly, the elastic constants (C11, C12 and C44) satisfy the Born-stability criterion, ensuring the mechanical stability of the compound. Additionally, the Poisson’s ratio, Pugh ratio (B/G), Frantsevich ratio, Cauchy pressure (PC) and anisotropy factor ensured both ductile and anisotropic characteristics. Higher values of Young’s modulus and shear modulus signify a superior ability to withstand longitudinal stresses. In the EELS analysis, distinctive energy-loss peaks resulting from absorption and emission correlated with diverse electronic transitions and energy levels associated with Sr, Zr and O atoms are used to probe the precise exploration of the electronic and optical characteristics of materials with a high degree of accuracy. Based on these findings, the designed SrZrO3 perovskite oxides are particularly suitable for applications in various optoelectronic devices.

Findings

CASTEP codes were utilized to design the cubic SrZrO3 perovskite under varying stress conditions ranging from 0 to 100 GPa. The phase stability was confirmed through XRD analysis. A distinctive trend in the band gap was observed: an increase from 3.330 eV to 3.615 eV as the stress increased from 0 to 40 GPa and a decrease from 3.493 to 3.155 above 60 GPa. A higher absorption and conductivity and a lower loss function were found for the optical properties. The mechanical stability was ensured by elastic constants (C11, C12, and C44) satisfying the Born-stability criteria. Additionally, the Poisson’s ratio, Pugh’s ratio (B/G), Frantsevich ratio, Cauchy pressure (PC) and anisotropy factor were used to verify the ductility and anisotropy of the materials. Higher values of Young’s modulus and shear modulus indicate a superior ability to withstand longitudinal stresses. EELS analysis revealed distinctive energy-loss peaks associated with Sr, Zr and O atoms, enabling precise exploration of the electronic and optical characteristics with a high degree of accuracy. As expected, the designed SrZrO3 perovskite oxides exhibit favorable properties, making them particularly suitable for next-generation optoelectronic devices.

Originality/value

In this study, we utilized DFT within the CASTEP code framework to investigate the properties of cubic SrZrO3 perovskite oxides under varying stress conditions ranging from 0 to 100 GPa. Our research aimed to explore the key properties of SrZrO3 for diverse applications, particularly in optoelectronic devices.

Details

Multidiscipline Modeling in Materials and Structures, vol. 20 no. 6
Type: Research Article
ISSN: 1573-6105

Keywords

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