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The purpose of this paper is to develop a new approach for rapid computation of subsonic and low-transonic rotary derivatives with the available steady solutions obtained by Euler computational fluid dynamics (CFD) codes.

The approach is achieved by the perturbation on the steady-state pressure of Euler CFD codes. The resulting perturbation relation is established at a reference Mach number between rotary derivatives and normal velocity on surface due to angular velocity. The solution of the reference Mach number is generated technically by Prandtl–Glauert compressibility correction based on any Mach number of interest under the assumption of simple strip theory. Rotary derivatives of any Mach number of interest are then inversely predicted by the Prandtl–Glauert rule based on the reference Mach number aforementioned.

The resulting method has been verified for three typical different cases of the Basic Finner Reference Projectile, the Standard Dynamics Model Aircraft and the Orion Crew Module. In comparison with the original perturbation method, the performance at subsonic and low-transonic Mach numbers has significantly improved with satisfactory accuracy for most design efforts.

The approach presented is verified to be an efficient way for computation of subsonic and low-transonic rotary derivatives, which are performed almost at the same time as an accounting solution of steady Euler equations.

The purpose of this paper is to investigate an active flow control technique called Shock Control Bump (SCB) for drag reduction using evolutionary algorithms.

A hierarchical genetic algorithm (HGA) consisting of multi‐fidelity models in three hierarchical topological layers is explored to speed up the design optimization process. The top layer consists of a single sub‐population operating on a precise model. On the middle layer, two sub‐populations operate on a model of intermediate accuracy. The bottom layer, consisting of four sub‐populations (two for each middle layer populations), operates on a coarse model. It is well‐known that genetic algorithms (GAs) are different from deterministic optimization tools in mimicking biological evolution based on Darwinian principle. In HGAs process, each population is handled by GA and the best genetic information obtained in the second or third layer migrates to the first or second layer for refinement.

The method was validated on a real life optimization problem consisting of two‐dimensional SCB design optimization installed on a natural laminar flow airfoil (RAE5243). Numerical results show that HGA is more efficient and achieves more drag reduction compared to a single population based GA.

Although the idea of HGA approach is not new, the novelty of this paper is to combine it with mesh/meshless methods and multi‐fidelity flow analyzers. To take the full benefit of using hierarchical topology, the following conditions are implemented: the first layer uses a precise meshless Euler solver with fine cloud of points, the second layer uses a hybrid mesh/meshless Euler solver with intermediate mesh/clouds of points, the third layer uses a less fine mesh with Euler solver to explore efficiently the search space with large mutation span.

This article aims to provide a theoretical unifying framework for workplace Confucian culture and employees’ organizational commitment (OC) through the modelling role of moral identities. The context is education in Vietnam.

Based on employees’ OC theory, a theoretical model was built. Administrative staff and teachers were asked to participate in the study with the assistance of preschool educational institutions in Vietnam. A survey was performed, and data from 421 participants were collected. The moderated structural equation technique was used to test hypotheses.

The study has demonstrated the positive impact of workplace Confucian culture applications on employees’ perceptions and participation in corporate social responsibility (CSR). The study also confirms the positive impact of employees’ perceptions and participation in CSR. In addition, another conclusion is the moderating effect of moral values on the relationship between workplace Confucian culture and aspects of CSR.

The study focuses on Confucian-culture employees in workplaces, suggesting that their perception of CSR may differ from those from other backgrounds. The authors then plan to state the comparison in further research. The main finding of the study is that WCC and CSR affect employee OC, but there are other factors that could be influenced by WCC and CSR. Future research should explore these factors to improve the current model.

Confucian ideology has been constructed and developed for a long time, but this study has examined its practical implications for favourably effecting human behaviour, thereby demonstrating its potential in organizational culture and practical application.

This theoretical framework can be profitably used in educational organizations.

The study adds to the body of research on OC in two ways. The first way is to explain how a beneficial organizational factor – the Confucian workplace culture – contributes to employees’ OC. The second way involves examining the effects of moral identity on participation and perception of CSR.

This empirical study aims to investigate how employee responses to corporate social responsibility (CSR) (i.e. perception of and participation in CSR initiatives) can affect career adaptability in the Vietnamese service industry. Furthermore, the mediating mechanism of psychological capital (PsyCap) and the moderating role of moral identity are explored in this relationship.

The target population for this study includes employees working for service enterprises in which CSR practices are conducted, such as tourism, hospitality, retail, education and others in Vietnam. The data from 685 responses were analyzed for measurement model analysis and structural model analysis using SPSS, AMOS and SmartPLS.

The findings of this study reveal that CSR perception and CSR participation have significant positive effects on career adaptability through PsyCap. This study also confirms that the positive association between CSR perception and PsyCap is more pronounced among employees with a higher level of internalized moral identity and symbolic moral identity.

The collection of data involving multiple dimensions at once did not allow the study to accurately assess the effect of variables over time. Further studies that want to look closely at the impact of perception of and participation in CSR should collect data longitudinally and follow up the target sample over a period of time. Besides, moral identity is a context-dependent construct associated with various social and cultural institutions. Meanwhile, Western moral identity emphasizes individual-oriented morality; Eastern cultures consider a socially oriented person to be highly moral; therefore, this study’s findings might not be appropriate for Western culture. To enrich the existing CSR framework, future studies may attempt to unveil the intervening mechanism of other psychological factors, such as psychological safety, or explore the predictions for other career-related outcomes, such as career satisfaction in the CSR context. Finally, both CB-SEM and PLS-SEM methods can be combined to analyze complex models, especially high-order models.

By leveraging influence processes within the model, service managers can foster human resource development in the workplace by raising the active involvement of employees in CSR activities.

This research enriches the literature on CSR and employee-related outcomes by formulating a conceptual model focusing on employee responses to CSR as key antecedents. This study also contributes to the existing understanding of the CSR context by empirically investigating micro-level CSR in an emerging economy like Vietnam.

This study aims to investigate the moderating role of e-trustmarks in the relationship between electronic word of mouth (eWoM), security, quality of information, and purchase behaviour of consumers on B2C e-commerce websites. The research was conducted in the context of emerging countries.

The research utilised partial least squares path modelling (PLS-SEM) to assess the model and its hypothesised relationships, drawing on data from a survey of 1993 consumers engaged in e-commerce websites with e-trustmarks. The study incorporated SOR theory, asymmetric information theory, and signalling theory.

E-trustmarks moderate the positive impact of eWoM, security, and quality of information on online trust. A moderating effect of e-trustmarks was also found, such that the positive association between purchase intention and purchase behaviour was stronger when e-trustmarks were higher.

This study was conducted solely in Vietnam and focused only on a set of input variables without addressing specific industries or market segments. The research did not use demographic data, such as the age and income of the surveyors, to identify variations in the impact of variables on different target groups, indicating potential areas for future research.

Emerging countries should implement targeted policies regarding e-trustmarks and encourage businesses to adopt them to reduce information asymmetry in the online environment.

This study contributes to asymmetric theory and signalling theory by offering critical insights into how online businesses can make use of influence mechanisms in the model to ease asymmetric information. Integrating signalling theory and moderating e-trustmarks into the SOR model advances research on consumer behaviour in emerging countries’ e-commerce markets with asymmetric information.

The aim of this empirical study is to investigate an integrated model that captures the way service quality of banking kiosks (BK-SQ) exerts its impacts on customer perceived value and customer satisfaction and the moderating mechanism of technology readiness (TR) in the quality–satisfaction relationship in the banking sector in Vietnam.

An offline survey was conducted to obtain responses from 604 users of banking kiosks in Vietnam. Exploratory factor analysis, confirmatory factor analysis and structural equation modeling were used for data analysis. The moderating effect of TR was examined following the product indicator method.

The results validate significant positive correlations between BK-SQ, customer perceived value and customer satisfaction. Among six service quality dimensions, convenience is the most significant factor in predicting perceived service quality. The study also delineates how TR can moderate the link between service quality and customer satisfaction.

Future studies may make further attempts to incorporate other human and demographic factors as a moderator into the research model.

Bank managers should strive to improve the operations of banking kiosks based on six aspects and increase TR levels of customers to boost customer satisfaction with banking kiosks.

The study contributes to the literature on service quality and self-service technologies (SSTs) by offering critical insights into how banks can make use of influence mechanisms in the model to enhance service quality and customer satisfaction.

Drought and salinity intrusion aggravated by climate change threaten agricultural livelihoods in Viet Nan's Mekong Delta. In response, authorities have built water management infrastructure for irrigation and salinity protection. This study assessed the impact of one such project, the Ba Lai dam in Ben Tre province, on the livelihoods of aquaculture farmers.

This study uses the Sustainable Livelihoods Framework to assess the impact of the Ba Lai dam on the livelihood capitals of 18 farming households in four communes, located both upstream and downstream of the dam.

The authors find that, apart from some positive effects, the dam has also brought negative environmental consequences, such as increased water pollution. The authors also find that farmers have responded to the changes by adapting their livelihood practices.

The samples were relatively small, encompassing four communes in Ben Tre province. On the other hand, this case study is instructive to the many ongoing infrastructure projects in the Vietnamese Mekong Delta.

The project have caused an increase in water-related social conflict.

The case of the Ba Lai dam provides a cautionary example for infrastructure-based water management plans, both in Viet Nam and more broadly. The study suggests the need to strengthen community participation and prioritize impacts of farmers' capital assets when constructing water management infrastructure for climate change adaptation.