Sadia Rashid, Tasawar Hayat, Sumaira Qayyum, Muhammad Ayub and Ahmed Alsaedi
The purpose of this paper is to examine outcome of activation energy in rotating flow of an Oldroyd-B nano liquid.
Abstract
Purpose
The purpose of this paper is to examine outcome of activation energy in rotating flow of an Oldroyd-B nano liquid.
Design/methodology/approach
Flow is generated due to stretched surface. Binary chemical reaction is studied. Brownian and thermophoresis effects are considered. The system of nonlinear ordinary differential equations is derived. Convergent series solutions are obtained by homotopy analysis method. The resulting expressions for velocities, temperature and concentration are computed for different embedded parameters.
Findings
It is found that velocities f′ and g have decreasing effect when rotation parameter is enhanced. Brownian and thermophoresis are increasing functions of temperature and concentration. The physical quantities are sketched and discussed numerically. Concentration and temperature fields show decreasing behavior via Brownian and thermophoresis parameters.
Originality/value
Authors investigate the Rotating flow of Oldroyd-B nano fluid with chemical reactions. This work is not done yet in literature.
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Sadia Rashid, Tasawar Hayat, Sumaira Qayyum, Muhammad Ayub and Ahmed Alsaedi
The purpose of this study is to study flow caused by rotating frame. Effects of Darcy–Forchheimer and porous medium are considered to study velocity field. Concentration field is…
Abstract
Purpose
The purpose of this study is to study flow caused by rotating frame. Effects of Darcy–Forchheimer and porous medium are considered to study velocity field. Concentration field is discussed in presence of activation energy. Darcy–Forchheimer in a rotating frame is examined. Flow because of stretched sheet fills the porous space. Binary chemical reaction is entertained. Resulting system is numerically solved. The plots are arranged for rotational parameter, porosity parameter, coefficients of inertia, Prandtl number and Schmidt number. It is revealed that rotation on velocity has opposite effects when compared with temperature and concentration distributions. Skin friction coefficients and local Nusselt and Sherwood numbers are numerically discussed.
Design/methodology/approach
Darcy–Forchheimer in a rotating frame is examined. Flow because of stretched sheet fills the porous space. Binary chemical reaction is entertained. Resulting system is numerically solved. The plots are arranged for rotational parameter, porosity parameter, coefficients of inertia, Prandtl number and Schmidt number. It is revealed that rotation on velocity has opposite effects when compared with temperature and concentration distributions. Skin friction coefficients and local Nusselt and Sherwood numbers are numerically discussed.
Findings
The major findings here are as follows: an addition in porosity λ causes decay in velocity f′(η) while there is opposite behavior for temperature θ(η) and concentration ϕ(η) fields. θ and ϕ via β have similar results qualitatively. There is an opposite behavior of Pr on temperature and concentration. Inverse behavior of λ on ϕ and wall mass flux is noted. Concentration ϕ is decreasing function of reaction rate constant σ. Skin friction coefficient has similar qualitative results for λ and β. Temperature gradient −θ′(0) is decreased by λ and β.
Originality/value
Here, the authors are interested to investigate rotating flow in a porous space. Dissipation and radiation effects are neglected. Effects of activation energy are studied. This work is not done yet in literature.
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This paper includes regional, behavioral and biological issues of men that lead them to high mortality rate in Pakistan. The study was design to factories the major cause of…
Abstract
Purpose
This paper includes regional, behavioral and biological issues of men that lead them to high mortality rate in Pakistan. The study was design to factories the major cause of gender inequality of infection. This study focused on regional, behavioral and biological issues of men that lead to high mortality rate.
Design/methodology/approach
The statistical datum was collected from the official fact finding documents of Government of Pakistan to analyze the gender-based infection rate and mortality count. It was found that among the population of men in Pakistan, the mortality rate is very high.
Findings
The epidemiological studies are more threatening because mostly the population which is under real panic comprises older men.
Originality/value
The author declares that all the data was collected from the most authentic source and applied according to their background and biological, behavioral and logical knowledge.
S.M. Sayem, Azharul Islam, Mohammad Rajib Uddin and Jarin Sadia Promy
The study aims to identify the determinants of customer satisfaction in the electronic commerce (e-commerce) industry in Bangladesh. It also investigates whether acceptance of IT…
Abstract
Purpose
The study aims to identify the determinants of customer satisfaction in the electronic commerce (e-commerce) industry in Bangladesh. It also investigates whether acceptance of IT innovation mediates the relationship between the determinants of e-commerce and customer satisfaction.
Design/methodology/approach
A survey questionnaire had been designed and distributed among the customers of e-commerce businesses. Data were collected from 408 respondents, who were mostly from urban areas of the country. The collected data had been analysed with the application of the partial least square approach using SmartPLS4. First, the measurement model was applied to determine the validity and reliability of the dataset. Then, the structural model was utilized to justify the hypothesis.
Findings
The results showed that customer service, perceived ease of use and customer trust in e-commerce services have a significant positive impact on customer satisfaction. The acceptance of IT innovation, which showed a positive influence on customer satisfaction, enhanced customer satisfaction when accompanied by perceived ease of use and digital literacy.
Practical implications
The results would have valuable insight for the e-commerce business in designing their products and services and taking policies to achieve long-term customer loyalty.
Originality/value
This is the first study that incorporates IT innovation acceptance as a mediating variable. Although a number of factors have been identified as the determinants of customer satisfaction, the specific mechanism of IT innovation acceptance as a mediator between predictors and customer satisfaction is unique in this study.
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The purpose of this study is to contribute to the debate on the impact of organizational culture and national culture on green supply chain management (GSCM) adoption by…
Abstract
Purpose
The purpose of this study is to contribute to the debate on the impact of organizational culture and national culture on green supply chain management (GSCM) adoption by empirically testing the developed framework, and ultimately pave the way toward potential areas for future research.
Design/methodology/approach
Using survey data from a sample of Moroccan manufacturing firms, 130 responses were collected and analyzed using SPSS 25 and Smart PLS v 3.3.3 software. The paper used a convenience sample, as it is required by the quantitative method, which legitimate making generalization under certain conditions.
Findings
The research results indicated that the national culture does not influence the GSCM implementation. The results contradict a number of prior works. As for the second direct effect measured postulated that organizational culture has a direct and significant impact on the GSCM. The results indicate that adhocracy culture, clan culture and hierarchical culture have a positive impact on the implementation of GSCM initiatives. To assess the impact of ownership type on GSCM, we underlined the difference between local and foreign firms. In fact, as argued, the foreign firms are more implementing GSCM initiatives than local firms do. Based on the arguments advanced on prior literature, the firm size does, as expected, exert significant control over the adoption of GSCM initiatives.
Research limitations/implications
The paper here is a starting point to understand how environmental sustainability and culture are interlinked; further research might contribute to this topic by empirically testing the model in similar or different contexts, using different cultural frameworks.
Practical implications
The practical implications for the paper are related to the necessity of adopting adequate organizational culture to build responsible behaviors for GSCM adoption by Moroccan firms. Recognizing the powerful role of organizational culture as a crucial factor responsible for GSCM’s success beyond the well-defined corporate strategies, including market presence and technological advantages, etc.
Social implications
This paper contributes to the establishment of codependent links between sociology and management fields as it helps to update the social theories present in the operations management area.
Originality/value
To the best of the author’s knowledge, few works have pursued to review and bridge cultural theories with the GSCM implementation.
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Muhammad Arshad, Mariam Farooq, Sadia Afzal and Omer Farooq
The purpose of this paper is to determine the factors influencing the adoption of new information systems (IS) in organizations. Based on the institutional theory, this research…
Abstract
Purpose
The purpose of this paper is to determine the factors influencing the adoption of new information systems (IS) in organizations. Based on the institutional theory, this research proposes that organizations may induce their employees to adopt new IS by creating three types of institutional pressure: coercive, normative and mimetic. It is further argued that the effects of these three institutional pressures on employees’ new IS usage depend on their cultural orientations.
Design/methodology/approach
Model testing relies on data collected from 370 banking sector employees during the implementation of a new “customer relationship management” system. The hypothesized model was tested by using the structural equation modeling technique in MPlus 7.0.
Findings
The findings of this research reveal that institutional pressures (coercive, normative and mimetic) have positive effects on employees’ attitudes to using the new IS, which, in turn, positively influences their IS usage. In addition, collectivism strengthens the positive effect of coercive and normative forces on attitudes to using the new IS. Conversely, collectivism weakens the effect of the mimetic force on employees’ attitudes to using the new IS.
Originality/value
This research is among pioneering studies that explain the effect of institutional pressures (coercive, normative and mimetic) on employees’ IS usage. It is the first study of its nature that demonstrates that each of the three institutional pressures has differential effects on employees with highly collectivist orientations in comparison with employees with low collectivist orientations.
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Farhan Aadil, Oh-young Song, Mahreen Mushtaq, Muazzam Maqsood, Sadia Ejaz Sheikh and Junaid Baber
Wireless Body Area Network (WBAN) technology envisions a network in which sensors continuously operate on and obtained critical physical and physiological readings. Sensors…
Abstract
Purpose
Wireless Body Area Network (WBAN) technology envisions a network in which sensors continuously operate on and obtained critical physical and physiological readings. Sensors deployed in WBANs have restricted resources such as battery energy, computing power and bandwidth. We can utilize these resources efficiently. By devising a mechanism that is energy efficient with following characteristics, i.e. computational complexity is less, routing overhead is minimized, and throughput will be maximum. A lot of work has been done in this area but still WBAN faces some challenges like mobility, network lifetime, transmission range, heterogeneous environment, and limited resources. In the present years well, contemplative studies have been made through a large body to reach some holistic points pertaining to the energy consumption in WBAN. Thus we/put forward appropriate algorithm for energy efficiency which can vividly corroborate the advances in this specific domain. We have also focused on various aspects and phases of the studies like study computational complexity, routing overhead and throughput type of characteristics. There is still a room for improvement to get the desired energy optimization in WBAN. The network performance mainly relies upon the algorithm used for optimization process. In this work, we intended to develop an energy optimization algorithm for energy consumption in WBAN which is based on evolutionary algorithms for inter-BAN communications using cluster-based routing protocol.
Design/methodology/approach
In this paper we propose a meta heuristics algorithm Goa to solve the optimization problem in WBAN. Grasshopper is an insect. Generally, this insect is viewed individually and creating large swarm in nature. Figure 5 shows the individual grasshoppers' primitive patterns in swarm. Figure 7 depicts the pseudo code of Goa. In Goa, experiments are done to view the behavior of grasshoppers in swarm. How they gradually move towards the stationary and mobile target. Through experimentation it is conceived that swarm gradually converge towards their target. Another interesting pattern related to convergence of grasshopper is that it slowly towards its target. This shows that grasshopper does not trapped in local optima. In starting iterations of exploration process Goa, search globally and in last iterations it searches local optima. Goa makes the exploration and exploitation process balanced while solving challenging optimization problems.
Findings
Energy efficiency is achieved in the optimization process of cluster formation process. As the use of proposed algorithm Goa creates the optimal number of clusters. Shorter cluster lifetime means more times clustering procedure is called. It increases the network computational cost and the communication overhead. Experimentation results show that proposed Goa algorithm performs well. We compare the results of Goa with existing optimization Algorithms ACO and MFO. Results are generated using MATLAB.
Originality/value
A lot of work has done for the sake of energy optimization in WBAN. Many algorithms are proposed in past for energy optimization of WBAN. All of them have some strengths and weaknesses. In this paper we propose a nature inspired algorithm Goa. We use the Goa algorithm for the sake of energy optimization in WBAN.
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Naimatullah Shah, Mitho Khan Bhatti, Sadia Anwar and Bahadur Ali Soomro
This paper aims to explore the intention to adopt Islamic finance (ItIF) through the mediation of attitudes towards Islamic finance among microbusiness owners of Pakistan.
Abstract
Purpose
This paper aims to explore the intention to adopt Islamic finance (ItIF) through the mediation of attitudes towards Islamic finance among microbusiness owners of Pakistan.
Design/methodology/approach
The study is co-relational and based on cross-sectional data. The authors gathered the data from microbusiness owners through a survey questionnaire. The authors used 236 valid cases to assume the outcomes.
Findings
The results through structural equation modeling reveal a significant positive effect of the perception of Shariah compliance (PoSC), knowledge of the Islamic financial system (KoIF), religious preferences (RP) and loyalty on ItIF. Furthermore, attitude towards Islamic finance (AtIF) is a potent factor in developing the relationship between PoSC, KoIF, RP, loyalty and ItIF.
Practical implications
The study’s findings would be helpful for planners and policymakers in developing policies that favourably enhance the attitudes and intentions among individuals towards Islamic financing. The results would inspire readers to go to Islamic finance and an interest-free financial system enriched with Shariah law or Islamic obligations. The study would provide implications for the financial institutions in Pakistan and the rest of the Muslim world.
Originality/value
The study offers an apparent thoughtfulness of the empirical evidence from microbusiness owners of Pakistan. The study would provide a plausible mediating contribution of AtIF.
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Waqas Bin Khidmat, Muhammad Danish Habib, Sadia Awan and Kashif Raza
This study aims to examine the determinants of the female representations on Chinese listed firm’s boards. This study also investigates the effect of gender diversity on corporate…
Abstract
Purpose
This study aims to examine the determinants of the female representations on Chinese listed firm’s boards. This study also investigates the effect of gender diversity on corporate social responsibility activities.
Design/methodology/approach
The Tobit regression model is used because the data is censored and using ordinary least square regression can give spurious results. For robust check, the authors also used Heckman’s (1979) two-stage self-selection model to remove the sample self-selection bias.
Findings
The authors find that the female representations on the corporate board are positively associated with firm age, firm performance, corporate governance, family ownership, institutional ownership and managerial ownership while negatively related to firm size and state ownership. This study also incorporates predictors of the critical mass of women on the Chinese listed firm’s board. The study also tests the female-led hypothesis and concludes that the female representation increases in firms with female chief executive officer (CEO) or female chairpersons. The Chinese listed firms with gender-diverse board are socially responsible.
Research limitations/implications
The importance of diversity in corporate boards has been demonstrated in light of the agency theory and the resource dependence framework. The results contribute to the previous literature by documenting the determinants of female representations on board, robust by alternative measures of gender diversity, firm size, corporate governance and estimation techniques.
Practical implications
The economic significance of gender diversity stirred the firms to increase female representation. The policymakers can understand the reasons for female underrepresentation in Chinese boards and can reform the regulation to enhance governance quality, non-state ownership and risk aversion among the listed firms.
Originality/value
This study contributes to the literature by providing empirical evidence on the key predictor of the world’s largest emerging economy, specifically the study focuses on the firm specific determinants, different governance attributes, ownership structure and firm risk measures. This study also seeks to answer if the presence of a female in the Chairperson or CEO position encourages the firms to hire more female directors or not?