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The purpose of this study is to investigate the impact of swirling jet flow on the cooling performance of a heated rectangular prism placed within a channel. The primary aim is to explore the influence of varying aspect ratios (AR) of the prism and different fluid Reynolds numbers (Re) on the cooling efficiency.

The numerical analysis is performed using a finite volume-based solver, which incorporates the large eddy simulations (LES) turbulence model. The setup consists of twin 45° swirling jets directed at isothermally heated bodies, with water used as the cooling medium. The rectangular prism is oriented perpendicularly to the channel flow direction, positioned one unit distance from the inlet. This study examines three distinct aspect ratios (AR = 0.5, 1 and 1.5) and a range of Reynolds numbers (6000 = Re = 20000).

The results indicate that cooling efficiency improves as the aspect ratio decreases and the Reynolds number increases. Higher Reynolds numbers enhance jet impingement and turbulent mixing, which are crucial for efficient heat transfer. Conversely, lower Reynolds numbers lead to diminished impingement and reduced cooling efficiency. Increasing the Reynolds number from 6000 to 20000 elevates the average Nusselt number by 35% (for AR = 0.5) and up to 45% (for AR = 1.5). It was observed that lower aspect ratios produce superior cooling effects due to intensified localized jet interactions.

This research significantly contributes to the fields of fluid dynamics and thermal engineering by elucidating the influence of swirling jet flows on the cooling of heated surfaces. The findings offer valuable insights for optimizing the design and performance of cooling systems across various industrial applications.

Continuous fiber thermoplastics are recyclable and have excellent specific strength and stiffness, making them desirable materials for use in structural components. Recent advancements in continuous fiber additive manufacturing processes allow designers to make notches or perforations during printing, eliminating the need for labor-intensive and long drilling processes, which cause delaminations and premature failure. The purpose of this study is to evaluate the potential of continuous fiber 3D printing in creating notches for structural composites.

This study evaluates the notching process in nylon-based continuous-glass fiber thermoplastic composites through mechanical drilling and three-dimensional (3D) printing. Three different sample configurations were tested for tensile and fracture characteristics: Un-notched; with notches drilled mechanically; and with notches printed using a 3D printer, with the fibers routed around the notch. Further, finite element models were used to understand the stress concentration around the notches.

The tensile strength of notched samples was lower than that of unnotched samples in both 3D-printed and mechanically drilled cases. The presence of substantial delamination in mechanically drilled samples led to a 15% decrease in strength compared to 3D-printed samples. The increase in notch size resulted in a decrease in strength, as anticipated.

The techniques developed in this study may be easily applied to comparable situations involving several types of continuous fiber thermoplastic composites.

Both experimental and computational modeling results indicate that delamination because of the drilling process is the prime factor responsible for the significant decrease in residual strength. Furthermore, it also showed that the steering of the fiber around the notch had a minimal impact, and augmenting the stiffness in proximity to the notch can alleviate stress concentration.

This study investigates workplace bullying through a novel conceptualization by focusing on the simultaneous effects of abusive supervision and coworkers’ bullying. It aims to thoroughly understand how these harmful behaviors affect employee creative behavior.

Based on the tenets of social cognitive theory, this study used multilevel structural equation modeling with Mplus to analyze multi-source and multi-wave data collected from the information, communication and technology sector. The sample included 510 participants from 170 teams, comprising 340 subordinates and their 170 supervisors. Responses were collected at three time points, with a gap of approximately two weeks.

The findings indicate significant direct effects of abusive supervision and coworkers’ bullying on employee creative behavior, highlighting the detrimental effects of workplace bullying. Additionally, this study introduced and tested the mediating role of psychological capital, providing valuable insights into the mechanisms through which workplace bullying affects employee creative behavior.

By adopting a social cognitive framework, this multilevel research advances the field and enriches the literature on workplace bullying and employee creative behavior. This study adds depth to existing research by examining how abusive supervision and coworkers’ bullying simultaneously affect employees. It also highlights the vital role of psychological capital in mediating these effects. The findings emphasize the need to tackle workplace bullying to boost employee creative behavior and overall well-being.

The performance of business enterprises is an impetus to every nation’s growth and development, as they constitute a multitude of businesses in most countries in the world. While ethical crises in the workplace are causing serious depletion in organizational performance and, in some cases, leading to total bankruptcy and the collapse of business in a developing country. This study aims to empirically examine the interaction effect of Islamic work ethics (IWEs) on the linkage between organization culture (OC) and enterprise performance (EP).

The survey method collected data from 531 managers of firms in the SME category of enterprises, using validated measurement instruments adapted from previous studies, and the data were quantitatively analyzed with Smart PLS SEM.

The results indicate that OC has a positive and significant effect on EP. The study also found that IWEs had a strong positive and significant impact on EP. The investigation revealed a significant effect of IWEs on the OC impact on EP. Therefore, we concluded that increased IWE practice will enhance the OC impact on EP.

This study contributes to the nexus of OC and EP as the first to investigate the interaction effect of IWE in an African context. Furthermore, the study suggests that if enterprise managers can exhibit Islamic work values, it will communicate and stimulate workers’ positive attitudes toward the organization. The creation of a harmonious and unethical behavior-free workplace environment would lead to improved enterprise performance. We presented theoretical and practical implications, along with recommendations for future research.

The study aims to assess the impact of disruptive frugal digital technology and small and medium-sized enterprises' (SMEs') innovation performance on the food sector in Masvingo urban, Zimbabwe. A descriptive research design was used, and quantitative data were obtained using a questionnaire survey on 50 restaurant employees and 100 customers. The empirical findings demonstrated that the performance of SMEs was significantly improved by social media, cloud computing, virtual reality (VR), augmented reality (AR), and robotics. The study concludes that disruptive digital technologies (social media, cloud computing, AR, VR and robots affect the performance of SMEs by improving food production, streamlining information transfer, and utilizing cutting-edge technical applications. This chapter recommends that the government, through those in charge of formulating policy, educate and encourage the adoption of disruptive digital technology. The application of social media, cloud computing, VR, AR, and robotics will increase local food producers' access to the market. Digitalization will have a significant effect on Zimbabwe's local food system in the future.

This study aims to evaluate and compare the quality of work life (QWL) of nurses, in pre- and post-COVID-19 pandemic situations.

The study adopts a descriptive research design. Data were collected during the pre- and post-pandemic periods. The target sampling unit of the study comprises nurses working in Bangalore city, Karnataka, India. The minimum sample size was determined (Bartlett et al., 2001) as 385. The scale validation is carried out. The factors for the present study were explored using exploratory factor analysis and confirmed by confirmatory factor analysis. Model fitness (proposed measurement model) is ensured by using fit indices. The linear regression method was used to measure the level of QWL of nurses.

The present study noted that key factors that affects the QWL of nursing staff are work condition; work environment; work-life balance; compensation and reward; career development; job satisfaction and security; organization culture; relationship among co-workers and stress. Further, it is noticed that QWL of nurses pre-COVID-19 pandemic is 87.2%, while post-COVID-19 pandemic, it is 67%.

Present study can be extended to address the same research question by considering sampling unit such as therapist, technicians and sanitarians who have equally undergone tremendous pressure during pandemic.

The study outcome provides references for organizations engaged in health services to understand the extreme job conditions posed by pandemic. The constructive inspiration (physio-social and organizational support) reinforces the nurses to continue in their professions by decreasing negative impact.

The research paper extends the contributions of Hwang (2002), Nikeghbal et al. (2021), Howie–Esquivel et al. (2022) and Rania et al. (2023) and add to the existing body of the QWL literature. The outcome of the research records the prevailing conditions of pandemic and its effect on changes in work environment with specific reference to health-care sector.