Search results

The particle distribution in a fluid is mostly not homogeneous. The inhomogeneous dispersion of solid particles affects the velocity profile as well as the heat transfer of fluid. This study aims to highlight the effects of varying density of particles in a fluid. The fluid flows through a wavy curved passage under an applied magnetic field. Heat transfer is discussed with variable thermal conductivity.

The mathematical model of the problem consists of coupled differential equations, simplified using stream functions. The results of the time flow rate for fluid and solid granules have been derived numerically.

The fluid and dust particle velocity profiles are being presented graphically to analyze the effects of density of solid particles, magnetohydrodynamics, curvature and slip parameters. Heat transfer analysis is also performed for magnetic parameter, density of dust particles, variable thermal conductivity, slip parameter and curvature. As the number of particles in the fluid increases, heat conduction becomes slow through the fluid. Increase in temperature distribution is noticed as variable thermal conductivity parameter grows. The discussion of variable thermal conductivity is of great concern as many biological treatments and optimization of thermal energy storage system’s performance require precise measurement of a heat transfer fluid’s thermal conductivity.

This study of heat transfer with inhomogeneous distribution of the particles in a fluid has not yet been reported.

Bullying is an uncontrolled incident in today's global workplace and widely recognized as a major issue that has to be explained, addressed and resolved, both from a research and management aspect. However, it has a devastating impact on teacher performance thus a need to study its impact is crucial and integral. The study's purpose is to look into the impact of workplace bullying (WB) on work engagement (WE), as well as the influence of emotional exhaustion (EE) and psychological distress (PD) as mediators. Further, the study analyzed the role of emotional intelligence (EI) as a moderator for teacher's psychological distress and work engagement.

A quantitative approach was employed using 63 items and a 7-point Likert scale questionnaire administered to 366 teachers working in schools located in Islamabad. Data has been collected with the time lag method. Confirmatory Factor Analysis is employed to estimate factors whereas Structural Equation Modeling is executed to test hypotheses by using AMOS-23.

Results suggest that workplace bullying is significantly related to work engagement and this relationship is partially mediated by emotional exhaustion and psychological distress. Further, it confirmed the role of emotional intelligence as a moderator between psychological distress and work engagement.

First of all, single-source data has been used (responses collected from teachers) which may raise issues regarding CMB thus, future studies might collect data at different levels for better generalizability. Secondly, the study is based on a convenience sampling technique thus the hypothesized model may not be generalized to the entire population. Thirdly, the study found four variables in total to measure the effect on work engagement, therefore, individual characteristics or personality traits can better capture the notion.

The finding of the study would be helpful for the educational sector as they are playing an integral part in our society and such dilemmas need to be addressed with possible solutions.

This is one of the few studies which measure the mediator and moderator both consecutively in measuring workplace bullying and work engagement in the educational sector of Pakistan.

Child malnutrition is a grave concern for Pakistan, as the country has one of the highest incidences of child stunting in the developing world. The present study examines the relative significance of parents' education on a child's nutritional status in Pakistan.

For analysis, the study has used data from Phase 7 of the Pakistan Demographic and Health Survey (PDHS) (2017–2018). Since the dependent variable ranges from 0 to 1 (1 indicates not a stunted child, while 0 represents a stunted child), binary logistic regressions are used for the analysis.

The results show that mothers' and fathers' education positively contributes to a child's nutrition. However, mothers' education is considered more significant, especially in the long run. The mother's education categories are positive and significant in the long run, while only their higher education is positive and significant for the father's. Moreover, the magnitude of the effect also shows that the probability of stunting is less if the mothers are educated. The long-run coefficient for mothers' higher education is 0.752, while that of fathers' higher education is only 0.232.

The present study compares the importance of mothers' and fathers' education in child nutrition and concludes that the role of the mother is more crucial for child upbringing. There are rarely any studies that focus on the role of fathers' education in child nutrition and compare whose role, mothers' or fathers,' is more important for child well-being.

The peer review history for this article is available at: https://publons.com/publon/10.1108/IJSE-06-2023-0483

Despite noted instances of organizational cronyism in public sector Higher Educational Institutions (HEIs), there is a lack of empirical evidence on its detrimental outcomes. The present investigation tested the impact of organizational cronyism on knowledge hiding via the mediating role of moral disengagement and moderating role of egoistic climate.

A multi-stage random sample was drawn from the 312 teaching faculty working in HEIs of Lahore, Pakistan in three waves. M-plus was used to validate a longitudinal moderated mediation model based on Structural Equation Modeling.

The results showed that organizational cronyism leads to knowledge hiding. In addition, it was substantiated that moral disengagement acts as a mediator in the relationship between organizational cronyism and knowledge hiding. The strengthening impact of an egoistic climate was found in the direct and indirect association between organizational cronyism, moral disengagement, and knowledge hiding.

There is a dearth of research on the consequences of organizational cronyism and the understanding of the factors that underlie this association is limited. This research has bridged this gap by investigating the role of moral disengagement and egoistic climate in linking organizational cronyism and knowledge-hiding by building on social exchange and social cognitive theory.

This study proposes a new comprehensive model of entrepreneurial intentions (EIs) that enhances the understanding of the crucial entrepreneurial personality traits. This study also examines how entrepreneurial family history, gender and discipline moderate the relationship between the key entrepreneurial personality traits and EIs of university students.

The study introduces a new combination of important entrepreneurial personality traits, theoretically following the theory of planned behaviour (TPB). The data are collected using an entrepreneurial intention questionnaire and analysed with structural equation modelling (SEM) over a sample of 297 university students from Pakistan.

The findings highlight that one of the notable contributions to assessing EI is the negative impact of foreseeable challenges (FCs), resulting in negative EIs among university students of our sample. The authors also found significant moderating roles of gender, discipline and entrepreneurial family history in strengthening the relationship between entrepreneurial traits and EIs.

The study contributes both to the existing empirical and theoretical literature by examining a key set of entrepreneurial personality traits leading to enhance EIs. The results may also assist academicians to discover new ways for developing entrepreneurial traits among university students.

This study aims to unravel the effects of time pressure on work engagement within Chinese organizational settings, considering the moderating effect of inclusive leadership and the mediating role of coping strategies. It seeks to apply and extend theories such as the job demands-resources (JD-R) model, Lazarus’s stress and coping (LSC) framework and leader–member exchange (LMX) theory on stress and coping to understand these dynamics comprehensively.

The study collected responses from 211 Chinese professionals in the manufacturing sector through a structured questionnaire. Multiple regression analysis was used to test the hypotheses.

Results reveal that problem-focused coping strategies positively correlate with work engagement, whereas emotion-focused coping strategies do not show a significant association. Both emotion-focused and problem-focused coping strategies mediate the relationship between time pressure and work engagement. Additionally, inclusive leadership positively moderates the relationship between time pressure and both problem-focused and emotion-focused coping strategies.

Organizational leaders and HR practitioners of companies can devise interventions to enhance employee engagement by leveraging the findings of this study, which advances our understanding of the critical role of coping strategies and the influence of inclusive leadership, particularly under time pressure, which is prevalent in fast-paced work environments.

The research integrates the JD-R model, LMX theory and LSC framework to explore workplace dynamics in China, presenting new insights into coping mechanisms and leadership roles in high-pressure environments.

Based on the cognitive perspective of self-regulation theory and role balance theory, this study examines the moderating effects of self-efficacy and emotional exhaustion on the indirect path between impaired work–life balance and job performance through psychological depletion.

This conceptualized model was tested through a four-wave dyad data obtained from the employees and their supervisors of services sector organizations selected through stratified random sampling.

The results specify that psychological depletion partially mediates between impaired work–life balance and job performance. Further, self-efficacy acts as a buffering function to reduce the harmful effects of adverse impaired work–life balance on psychological depletion and emotional exhaustion provokes the injurious effects of psychological depletion on job performance.

This research provides important theoretical implications for work–life balance and psychological domains with boundary-spanning roles of self-regulatory measures.

This research is a unique attempt to link the self-regulatory perspective with role balance theory to understand and buffer the issues of impaired work–life balance.

Nonlinear mixed-convective entropy optimized the flow of hyperbolic-tangent nanofluid (HTN) with magnetohydrodynamics (MHD) process is considered over a vertical slendering surface. The impression of activation energy is incorporated in the modeling with the significance of nonlinear radiation, dissipative-function, heat generation/consumption connection and Joule heating. Research in this area has practical applications in the design of efficient heat exchangers, thermal management systems or nanomaterial-based devices.

Suitable set of variables is introduced to transform the PDEs (Partial differential equations) system into required ODEs (Ordinary differential equations) system. The transformed ODEs system is then solved numerically via finite difference method. Graphical artworks are made to predict the control of applicable transport parameters on surface entropy, Bejan number, Sherwood number, skin-friction, Nusselt number, temperature, velocity and concentration fields.

It is noticed from present numerical examination that Bejan number aggravates for improved estimations of concentration-difference parameter a_2, Eckert number E_c, thermal ratio parameter ?_w and radiation parameter R_d, whereas surface entropy condenses for flow performance index n, temperature-difference parameter a_1, thermodiffusion parameter N_t and mixed convection parameter ?. Sherwood number is enriched with the amplification of pedesis-motion parameter N_b, while opposite development is perceived for thermodiffusion parameter. Lastly, outcomes are matched with formerly published data to authenticate the present numerical investigation.

To the best of the authors' knowledge, no investigation has been reported yet that explains the entropic behavior with activation energy in the flowing of hyperbolic-tangent mixed-convective nanomaterial due to a vertical slendering surface.

Based on action regulation theory (ART), this study aims to test the impact of individual entrepreneurial orientation (IEO) training on small business owner career success (financial attainment, satisfaction and achievement). Moreover, this relationship was unpacked through a dual mediation model of IEO behaviour and career resilience.

A four-wave, longitudinal randomized controlled field experiment was conducted in which 527 small business owners participated from Lahore, Pakistan (training group = 256, control group = 271). The data analysis was done via ANCOVAs (group comparison) and PROCESS Model 6 (for serial mediation).

The results demonstrated that after getting IEO training, the small business owners had increased IEO behaviour, career resilience and career success as compared to their counterparts in the control group. In addition, the effect of IEO training on career success was attributed to the underlying role of IEO behaviour and career resilience development.

This is one of the few studies that have demonstrated the impact of IEO training on the career-related outcomes based on the action regulation perspective.

The study aims to investigate the impact of workplace ostracism (WO) and fear of the COVID-19 pandemic on the family life of restaurant employees. This research is based on the conservation of resources (COR) theory and work–family interface model to understand the theoretical underpinnings of mistreatment in the food sector during the COVID-19 pandemic.

The study utilized a survey with a structured questionnaire to collect time-lagged data from 238 restaurant employees in the central region of Punjab province in Pakistan. The collected data were analyzed using the SPSS tool with modern-day techniques like bootstrapping, process macro and SmartPLS.

The study reveals that perceived stress levels of the employees increase due to ostracism, leading to work–family conflict. Furthermore, the study found that employees who fear COVID-19 are less stressed by ostracism.

The study's significant contribution lies in demonstrating that the impact of ostracism in the workplace is quite different from what was expected. The results have shown that ostracism can reduce the perceived stress levels of employees, leading to a decrease in work–family conflict, especially in the presence of fear of COVID-19.