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1 – 10 of 136Muhammad Faisal, Iftikhar Ahmad and Abdur Rashid
The present study aims to encompass the bidirectional magnetized flowing of a hybrid-nanofluid over an unsteady stretching device with the inclusion of thermal radiation and…
Abstract
Purpose
The present study aims to encompass the bidirectional magnetized flowing of a hybrid-nanofluid over an unsteady stretching device with the inclusion of thermal radiation and entropy generation. Brick-shaped nanoparticles (zinc-oxide and ceria) are suspended in water, serving as the base-fluid to observe the performance of the hybrid mixture. The Maxwell thermal conductivity relation is employed to link the thermophysical attributes of the hybrid mixture with the host liquid. Additionally, a heat source/sink term is incorporated in the energy balance to enhance the impact of the investigation. Both prescribed-surface-temperature (PST) and prescribed-heat-flux (PHF) conditions are applied to inspect the thermal performance of the hybrid nanofluid.
Design/methodology/approach
The transport equations in Cartesian configuration are transformed into ordinary differential equations (ODEs), and an efficient method, namely the Keller-Box method (KBM), is utilized to solve the transformed system. Postprocessing is conducted to visually represent the velocity profile, thermal distribution, skin-friction coefficients, Bejan number, Nusselt number and entropy generation function against the variations of the involved parameters.
Findings
It is observed that more entropy is generated due to the increases in temperature difference and radiation parameters. The Bejan number initially declines but then improves with higher estimations of unsteadiness and Hartmann number. Overall, the thermal performance of the system is developed for the PST scenario than the PHF scenario for different estimations of the involved constraints.
Originality/value
To the best of the authors' knowledge, no investigation has been reported yet that explains the bidirectional flow of a CeO2-ZnO/water hybrid nanofluid with the combined effects of prescribed thermal aspects (PST and PHF) and entropy generation.
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Muhammad Faisal, Iftikhar Ahmad, Qazi Zan-Ul-Abadin, Irfan Anjum Badruddin and Mohamed Hussien
This study aims to explore entropy evaluation in the bi-directional flow of Casson hybrid nanofluids within a stagnated domain, a topic of significant importance for optimizing…
Abstract
Purpose
This study aims to explore entropy evaluation in the bi-directional flow of Casson hybrid nanofluids within a stagnated domain, a topic of significant importance for optimizing thermal systems. The aim is to investigate the behavior of unsteady, magnetized and laminar flow using a parametric model based on the thermo-physical properties of alumina and copper nanoparticles.
Design/methodology/approach
The research uses boundary layer approximations and the Keller-box method to solve the derived ordinary differential equations, ensuring numerical accuracy through convergence and stability analysis. A comparison benchmark has been used to authenticate the accuracy of the numerical outcomes.
Findings
Results indicate that increasing the Casson fluid parameter (ranging from 0.1 to 1.0) reduces velocity, the Bejan number decreases with higher bidirectional flow parameter (ranging from 0.1 to 0.9) and the Nusselt number increases with higher nanoparticle concentrations (ranging from 1% to 4%).
Research limitations/implications
This study has limitations, including the assumption of laminar flow and the neglect of possible turbulent effects, which could be significant in practical applications.
Practical implications
The findings offer insights for optimizing thermal management systems, particularly in industries where precise control of heat transfer is crucial. The Keller-box simulation method proves to be effective in accurately predicting the behavior of such complex systems, and the entropy evaluation aids in assessing thermodynamic irreversibilities, which can enhance the efficiency of engineering designs.
Originality/value
These findings provide valuable insights into the thermal management of hybrid nanofluid systems, marking a novel contribution to the field.
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Zeshan Ahmad, Shahbaz Sharif, Iftikhar Ahmad, Syed Muhammad Waseem Abbas and Mussrat Shaheen
Present study investigated the influence of female descendent entrepreneur's self-compassion on the perceived succession success of small-family businesses (S-FB) with the…
Abstract
Purpose
Present study investigated the influence of female descendent entrepreneur's self-compassion on the perceived succession success of small-family businesses (S-FB) with the mediating mechanism of financial literacy.
Design/methodology/approach
The primary data was collected from 319 female descendent entrepreneurs who were designated as chairwomen, and managing director positions in their retails sector S-FBs. The purposive sampling technique was used to collect the data. The provided hypotheses are tested using the partial least square structural equation modeling (PLS-SEM) technique. This study followed multiple regression analyses to see the influence of self-compassion (mindfulness, self-isolation, self-judgment and over-identification) on financial literacy and perceived succession success.
Findings
The results reveal that female descendent entrepreneurs mindfulness and over-identification significantly increase but self-isolation decreases the likelihood of successful succession transition. Moreover, female descendent entrepreneur's financial literacy increases mindfulness and overidentification while it decreases self-isolation and improves the likelihood of succession success. However, financial literacy does not influence self-judgmental traits and perceived succession success.
Practical implications
This study highlights a vital issue, how the financial literacy of female descendent entrepreneurs manages their self-compassion and increases the likelihood of succession success. In addition, it covers a research gap and helps the S-FBs to improve their survival rate by focusing on the descendent entrepreneur's self-compassion and financial literacy.
Originality/value
This study contributes to the body of knowledge by emphasizing predictors that influence the successful succession transition to subsequent generations. This study determines the influence of self-compassion of female descendent entrepreneurs on perceived succession success and financial literacy as a mediator by using the self-control theory. The study can be useful to family business consultants, policymakers and family businesses.
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Amjad Iqbal, Iftikhar Ahmad and Khawaja Fawad Latif
This study aims at ascertaining the relationship between servant leadership and employees’ organizational deviant behaviour in public sector organizations of Pakistan. Drawing on…
Abstract
Purpose
This study aims at ascertaining the relationship between servant leadership and employees’ organizational deviant behaviour in public sector organizations of Pakistan. Drawing on social cognitive and social exchange theories, this research also proposes to determine the mediating role of self-efficacy and trust in leader in this relationship.
Design/methodology/approach
Using convenience sampling method, three-wave time-lagged data were collected from 204 employees working in secretariats of two federal ministries in Pakistan.
Findings
The results derived from partial least squares structural equation modelling (PLS-SEM) analysis using SmartPLS 3.2.9 software revealed that servant leadership is not negatively related to employee organizational deviant behaviour. Although the findings indicate that servant leadership is positively related to employee self-efficacy and trust in leader, these factors do not mediate the relationship between servant leadership and organizational deviant behaviour.
Practical implications
Empirical evidence of this research emphasizes the role of servant leadership in fostering employees’ trust and self-efficacy. Additionally, this research suggests that alongside servant leadership, a moral climate and fairness in organizational policies and decisions are also inevitable to prompt employees to feel obligated to reduce undesirable workplace behaviours, particularly in public sector organizations.
Originality/value
This is amongst the earlier studies that investigates the association between servant leadership and organizational deviant behaviour of public sector employees in a developing context and examines the mediating role of trust in leader and self-efficacy simultaneously. Being contradictory to the underlying theories, findings of this research open the debate on effectiveness of servant leadership in public sector organizations of developing countries and expose avenues for future research.
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Iftikhar Ahmad, Salim Khan and Shahid Iqbal
The purpose of this paper is to investigate and analyze the adoption of digital technologies in the banking industry and its impact on the rise of digital fraudulent activities…
Abstract
Purpose
The purpose of this paper is to investigate and analyze the adoption of digital technologies in the banking industry and its impact on the rise of digital fraudulent activities, specifically focusing on online banking frauds. This paper aims to provide insights into the current technologies implemented by banks to secure their online banking systems and explores the methods used by cybercriminals to exploit security vulnerabilities in these systems.
Design/methodology/approach
In order to understand how digital technologies in banking can be secured against online fraud, this research conducted a systematic literature review (SLR) on digital banking, online banking fraud, and security measurements. The review encompasses a variety of sources from online databases such as Emerald Insight, Google Scholar, IEEE, JSTOR, Springer and Science Direct.
Findings
The key finding of the paper is that the adoption of digital technologies in the banking industry has led to a significant increase in digital fraudulent activities, particularly in the form of online banking frauds. This paper emphasizes that these frauds have become a global concern and have evolved into an industry where cybercriminals use sophisticated tools such as phishing attacks, denial-of-service attacks, Trojan horses, malware infections, identity theft and computer viruses.
Research limitations/implications
This study relies solely on a literature review without incorporating primary data or case studies; therefore, it might miss out on the firsthand experiences and perspectives of banks and cybersecurity professionals.
Practical implications
This study emphasizes the need for banks to adopt advanced security measures to safeguard their online banking systems.
Social implications
This study underscores the importance of ongoing training and awareness programs for both bank employees and customers.
Originality/value
This study specifically addresses the adoption of digital technologies in the banking industry and its correlation with the increase in digital fraudulent activities. This focus on the intersection of technology and fraud in the banking sector is a distinctive aspect. This study conducts a SLR to examine the current technologies implemented by banks to safeguard their online banking systems. This comprehensive approach provides insights into the diverse security measures used by banks to protect against various types of cyber threats.
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Bárbara C. Cruz and Stephen J. Thornton
Because of its conceptually dense character, social studies can be difficult to learn. Educators often struggle to find ways to teach higher-order thinking and make academic…
Abstract
Because of its conceptually dense character, social studies can be difficult to learn. Educators often struggle to find ways to teach higher-order thinking and make academic language and concepts comprehensible for English language learners (ELLs). Visuals may be the key to effective social studies instruction for this student population. Images can be located and obtained easily through the Internet, meshing well with the learning styles of today’s adolescents. This article presents some of the most promising approaches—including historical photographs, paintings and illustrations, maps, propaganda posters, and graphic organizers— that can be used with learners at all levels of language proficiency.
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Abbas Ali Chandio, Yuansheng Jiang, Feng Wei and Xu Guangshun
The purpose of this paper is to evaluate the impact of short-term loan (STL) vs long-term loan (LTL) on wheat productivity of small farms in Sindh, Pakistan.
Abstract
Purpose
The purpose of this paper is to evaluate the impact of short-term loan (STL) vs long-term loan (LTL) on wheat productivity of small farms in Sindh, Pakistan.
Design/methodology/approach
The econometric estimation is based on cross-sectional data collected in 2016 from 18 villages in three districts, i.e. Shikarpur, Sukkur and Shaheed Benazirabad, Sindh, Pakistan. The sample data set consist of 180 wheat farmers. The collected data were analyzed through different econometric techniques like Cobb–Douglas production function and Instrumental variables (two-stage least squares) approach.
Findings
This study reconfirmed that agricultural credit has a positive and highly significant effect on wheat productivity, while the short-term loan has a stronger effect on wheat productivity than the long-term loan. The reasons behind the phenomenon may be the significantly higher usage of agricultural inputs like seeds of improved variety and fertilizers which can be transformed into the wheat yield in the same year. However, the LTL users have significantly higher investments in land preparation, irrigation and plant protection, which may lead to higher wheat production in the coming years.
Research limitations/implications
In the present study, only those wheat farmers were considered who obtained agricultural loans from formal financial institutions like Zarai Taraqiati Bank Limited and Khushhali Bank. However, in the rural areas of Sindh, Pakistan, a considerable proportion of small-scale farmers take credit from informal financial channels. Therefore future researchers should consider the informal credits as well.
Originality/value
This is the first paper to examine the effects of agricultural credit on wheat productivity of small farms in Sindh, Pakistan. This paper will be an important addition to the emerging literature regarding effects of credit studies.
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Sadaf Aftab Abbasi, Arzu Marmaralı and Gözde Ertekin
This paper investigates the thermal comfort properties of quilted (jersey cord) fabrics produced with different width of diamond pattern, different filling yarn linear density and…
Abstract
Purpose
This paper investigates the thermal comfort properties of quilted (jersey cord) fabrics produced with different width of diamond pattern, different filling yarn linear density and different types of material.
Design/methodology/approach
A total of 12 fabrics were knitted by varying the width of diamond pattern (1 and 3 cm), the filling yarn linear density (300 and 900 denier) and the type of materials (cotton, polyester and their combination). In this regard, air permeability, thermal conductivity, thermal resistance, thermal absorptivity and relative water vapor permeability of these fabrics were measured and evaluated statistically.
Findings
The results showed that fabrics knitted using cotton yarn in both front and back surfaces exhibit higher thermal conductivity, thermal absorptivity and relative water vapor permeability characteristics; whereas samples knitted using polyester yarn in both surfaces have higher air permeability and thermal resistance. As the linear density of filling yarn increases, thickness and thermal resistance of the samples increase and air permeability, thermal conductivity, water vapor permeability characteristics decrease. When the effect of the width of diamond pattern compared, it is seen that an increase in the width of pattern lead to an increase in thickness and thermal resistance and a decrease in thermal conductivity, thermal absorptivity and water vapor permeability values.
Originality/value
Many researches were carried out on the thermal comfort properties of knitted fabrics, however there is a lack of research efforts regarding thermal comfort properties of quilted fabrics.
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Jaspreet Kaur, Neha Bhardwaj, Reynal Fernandes, Vidya Vidya and Nafees Akhter Farooqui
Religion plays a crucial role as a sociocultural factor to assess consumer behavior. Stemming from the above, this study aims to analyze the impact of religion and ethnic concern…
Abstract
Purpose
Religion plays a crucial role as a sociocultural factor to assess consumer behavior. Stemming from the above, this study aims to analyze the impact of religion and ethnic concern on the purchase intention (PI) of consumers based on the theory of planned behavior.
Design/methodology/approach
The research method adopted for this study includes a meta-analysis of the extant literature for the past 20 years focusing on the relationship between religiosity and PI. Data of 24 values from 23 studies were used to assess the impact of religiosity on the PI of consumers.
Findings
The findings of this study indicate that religiosity has a strong impact on the PI of consumers. Further, this study identifies that location, sample size and product category play a vital role as moderators toward the relationship between religiosity and PI. This study identifies critical and pertinent implications for brands as they reach out to religious and cultural groups across various geographies, in the context of identifying target markets and adapting marketing strategies.
Originality/value
This study acts in response to the consistent call for research to focus on religion-related variables and fills the gap calling for empirical research into religiosity and its impact on PIs. This study makes notable theoretical, managerial and methodological contributions to the field.
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