The purpose of this paper is to solve the local problem involving strong contrast heterogeneous conductive material, with application to gas-filled porous media with both perfect…
Abstract
Purpose
The purpose of this paper is to solve the local problem involving strong contrast heterogeneous conductive material, with application to gas-filled porous media with both perfect and imperfect Kapitza boundary conditions at the bi-material interface. The effective parameters like the dynamic conductivity and the thermal permeability in the acoustics of porous media are also derived from the cell solution.
Design/methodology/approach
The Fourier transform method is used to solve frequency-dependent heat transfer problems. The periodic Lippmann–Schwinger integral equation in Fourier space with source term is first formulated using discrete Green operators and modified wavevectors, which can then be solved by iteration schemes.
Findings
Numerical examples show that the schemes converge fast and yield accurate results when compared with analytical solution for benchmark problems.
Originality/value
The formulation of the method is constructed using static and dynamic Green operators and can be applied to pixelized microstructure issued from tomography images.
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Van Huyen Vu, Benoît Trouette, Quy Dong TO and Eric Chénier
This paper aims to extend the hybrid atomistic-continuum multiscale method developed by Vu et al. (2016) to study the gas flow problems in long microchannels involving density…
Abstract
Purpose
This paper aims to extend the hybrid atomistic-continuum multiscale method developed by Vu et al. (2016) to study the gas flow problems in long microchannels involving density variations.
Design/methodology/approach
The simulation domain is decomposed into three regions: the bulk where the continuous Navier–Stokes and energy equations are solved, the neighbourhood of the wall simulated by molecular dynamics and the overlap region which connects the macroscopic variables (density, velocity and temperature) between the two former regions. For the simulation of long micro/nanochannels, a strategy with multiple molecular blocks all along the fluid/solid interface is adopted to capture accurately the macroscopic velocity and temperature variations.
Findings
The validity of the hybrid method is shown by comparisons with a simplified analytical model in the molecular region. Applications to compressible and condensation problems are also presented, and the results are discussed.
Originality/value
The hybrid method proposed in this paper allows cost-effective computer simulations of large-scale problems with an accurate modelling of the transfers at small scales (velocity slip, temperature jump, thin condensation films, etc.).
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Thi Kim Quy Hoang, Mai Dong Tran and Tien Minh Dinh
This study draws on insights from the theory of conservation of resources to explore the impact of servant leadership (SL), creative adaptability (CA), and psychological…
Abstract
Purpose
This study draws on insights from the theory of conservation of resources to explore the impact of servant leadership (SL), creative adaptability (CA), and psychological well-being (PWB) on the service recovery performance (SRP) of employees. More specifically, the objective of this study is twofold: one to ascertain whether employees' service recovery performance would increase significantly after their exposure to SL, and two, to determine whether CA and PWB serially mediate the link between SL and SRP.
Design/methodology/approach
To analyze the data collected from a sample of 371 air service providers’ front-line employees (FLEs), partial least squares structural equation modeling (PLS-SEM) was performed.
Findings
The result indicated that SL was positively related to SRP. Likewise, the results of the serial mediation analysis showed that CA and PWB independently and serially mediated the SL-SRP relationship. This study makes significant contributions to the literature on SL and SRP.
Originality/value
This study adds to the growing body of research on how FLEs effectively deal with customers who are dissatisfied with their service failure experiences. Specifically, this research expands on previous results by proving the favorable effect of leadership style on FLE’s service recovery performance. In addition, the current study examines how effective service recovery is by assessing the employee’s resources based on COR theory. Finally, this research provides new insight into the influence of SL on SRP through the serial mediation of CA and FLE’s well-being.
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Hoang Thi Kim Quy, Mai Dong Tran and Tien Minh Dinh
The present study aims to explore the linkages among transformational leadership, workplace spirituality and frontline employee (FLE) service recovery performance in the aviation…
Abstract
Purpose
The present study aims to explore the linkages among transformational leadership, workplace spirituality and frontline employee (FLE) service recovery performance in the aviation service industry. The resilience of individuals was taken as a mediator for the associations between transformational leadership as well as workplace spirituality and frontline employee's service recovery performance. The hypothesized research model was examined by integrating the principles of COR theory and the SDT perspective on psychological needs.
Design/methodology/approach
The research model was evaluated via partial least squares (PLS). In particular, SmartPLS 3.0 software was utilized to examine anticipated correlations through a poll of 371 air service provider frontline employees.
Findings
Results demonstrated that transformational leadership had a positive impact on both service recovery performance and spirituality in the workplace. The positive connection between workplace spirituality and service recovery performance was also supported. Further, the mediating role of an employee's resilience in these relationships was established. The paper provides a significant contribution with both theoretical and practical implications.
Practical implications
The present research also provides some practical implications for the aviation industry. Since the aviation industry is a high-contact service industry, aviation frontline employees play a crucial role in service recovery strategies. Thus, air service providers need to provide these employees with ample resources to effectively handle service failures. Moreover, the service recovery performance of air service providers may benefit from the hiring of managers with strong transformational leadership styles. Therefore, these providers should take leadership style into account when recruiting, promoting and training supervisors. Managers should, among other activities, implement transformational leadership approaches, such as inspiring and motivating, establishing a supportive organizational climate, paying attention to employees' needs and engaging in active listening.
Originality/value
The current study contributes to the stream of research on SRP and the role of transformational leadership, workplace spirituality and resilience in service recovery in particular. Furthermore, by integrating the COR and SDT theories, the current study gives more real-world proof of the importance of leadership for organizations.
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Ky Nam Nguyen, Quang Anh Phan and Ngoc Minh Nguyen
This paper aims to examine the management status quo of archaeological heritage in Vietnam seen in the case of Vuon Chuoi, a complex of Bronze Age sites located in Central Hanoi…
Abstract
Purpose
This paper aims to examine the management status quo of archaeological heritage in Vietnam seen in the case of Vuon Chuoi, a complex of Bronze Age sites located in Central Hanoi, which has been believed to be Hanoi’s first human settlement. Like other archaeological sites located in urban areas, this site has been under threat of destruction caused by land encroachment pressure. Although researchers have long waged a campaign for preservation, the dissensus among key stakeholders and the dispute over responsibility have left this site at the heart of an interminable polemic over legislation.
Design/methodology/approach
This research utilises a qualitative approach, and the primary data were collected throughout multiple field trips in 2019 and 2020. Several open-ended interviews were conducted with various state and nonstate actors involved in the Vuon Chuoi Complex’s management process. The discussion was also supported by analysing related legal documents retrieved from national archives and official online directories.
Findings
This paper dissects the current legislative and administrative framework applied in governing heritage in general and archaeological sites in Vietnam, in particular. The results indicate that existing flaws in Vietnam’s legal system are detectable, and the unsystematic organisation has led to deferment of the decision-making processes. Also, there is an apparent difference found in the attitude of the bodies in charge toward the treatment of listed and unlisted sites.
Originality/value
This research outlines that in the wake of urbanisation and industrialisation in Vietnam, a consensus among key stakeholders and an inclusive legal system are required to help preserve archaeological sites in urgent need of attention. Although several Vietnamese laws and regulations have been put into practice, they have shown critical barriers and gaps in conserving Vietnamese cultural heritage.
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This paper focuses on dry port as a key notion in port-hinterland development. We first discuss the concept of dry port by reviewing existing literature. Then, we explore the…
Abstract
This paper focuses on dry port as a key notion in port-hinterland development. We first discuss the concept of dry port by reviewing existing literature. Then, we explore the reasons behind the emergence and development of inland node systems in different geographical, economic and institutional contexts. Next, the paper presents a classification of dry ports based on a multitude of factors and dimensions and the respective benefits to different parties. The study then focuses on the specific characteristics of dry ports and associated transport networks in developing countries.
In the last part, we present a case study on the dry port system in Vietnam by reviewing the seaport and inland transport system and analyzing the current status of inland terminals in Vietnam. To conclude, a SWOT analysis is presented with regard to the development of the dry port network in Vietnam, followed by recommendations for policy makers.
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This chapter provides information on the development of Vietnamese education under the influence of global forces based on the analysis of relevant education research and policies…
Abstract
This chapter provides information on the development of Vietnamese education under the influence of global forces based on the analysis of relevant education research and policies using Wolhuter’s frameworks. In the process of coming up with ways to develop education in the face of different influences of globalization, besides having reactions with patterns commonly found in countries around the world, Vietnam also has responses that reflect its own political, sociocultural and economic characteristics. The state still plays a controlling role in education at all levels and many culture-related features that have existed throughout the country’s history have hardly changed, namely aspects related to teachers, learners and teaching and learning methods. To sustain its education in the globalized era, Vietnam must make more efforts in various aspects such as the link between education and employment, the logic of education objectives, the feasibility and appropriateness of curricula, quality of education, especially of higher education and equality in education for underprivileged groups.
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Phong Dong Nguyen, Nguyen Huu Khoi, Angelina Nhat Hanh Le and Huong Xuan Ho
Drawing upon the conservation of resources (COR) theory, this paper investigates the moderated mediation model linking benevolent leadership to organizational citizenship…
Abstract
Purpose
Drawing upon the conservation of resources (COR) theory, this paper investigates the moderated mediation model linking benevolent leadership to organizational citizenship behaviors towards the organization (OCBO) and towards individuals (OCBI) in the context of higher education. The mediating roles of leader-member exchange and affective commitment as well as the moderating roles of the two attachment styles—attachment anxiety and attachment avoidance—are also examined.
Design/methodology/approach
Data were collected from a sample of 333 university lecturers and analyzed using partial least square structural equation modeling (PLS-SEM).
Findings
The results demonstrate that leader-member exchange and affective commitment are mediating resources that help benevolent leaders motivate university lecturers to engage in two types of OCBs. Moreover, attachment anxiety and attachment avoidance act as the respective enhancer and inhibitor for the indirect effects of benevolent leadership on both OCBs through leader-member exchange. In contrast, the relationships between benevolent leadership and two types of OCBs through the mediating role of affective commitment are not contingent on the attachment styles of lecturers.
Practical implications
The findings suggest that university leaders who aim at promoting OCBs among lecturers should deploy benevolent leadership style to facilitate a positive social exchange relationship as well as foster their affective commitment. Such leadership style is especially effective in influencing lecturers who possess attachment anxiety personality traits.
Originality/value
This pioneer research develops and empirically tests a COR theory-grounded moderated mediation model pertaining to benevolent leadership and lecturers' OCBs. The findings contribute to the educational management literature by demonstrating that benevolent leadership, a crucial organizational resource, significantly motivates lecturers' voluntary and extra-role behaviors in a dynamic and contingent manner. Leader-member exchange and affective commitment are important mediating resources in the process of transforming benevolent leadership into beneficial behaviors. Further, the effectiveness of benevolent leadership largely depends on lecturers' personality traits of attachment anxiety and avoidance. These novel mediating and moderating findings demonstrate the sequential and interaction effects of various organizational and individual resources on lecturers' OCBs; thus, adding value to the COR theory's core principles, including resource caravans and resource investment behaviors.
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Phong Hoang Nguyen and Duyen Thi Bich Pham
The paper aims to enrich previous findings for an emerging banking industry such as Vietnam, reporting the difference between the parametric and nonparametric methods when…
Abstract
Purpose
The paper aims to enrich previous findings for an emerging banking industry such as Vietnam, reporting the difference between the parametric and nonparametric methods when measuring cost efficiency. The purpose of the study is to assess the consistency in issuing policies to improve the cost efficiency of Vietnamese commercial banks.
Design/methodology/approach
The cost efficiency of banks is assessed through the data envelopment analysis (DEA) and the stochastic frontier analysis (SFA). Next, five tests are conducted in succession to analyze the differences in cost efficiency measured by these two methods, including the distribution, the rankings, the identification of the best and worst banks, the time consistency and the determinants of efficiency frontier. The data are collected from the annual financial statements of Vietnamese banks during 2005–2017.
Findings
The results show that the cost efficiency obtained under the SFA models is more consistent than under the DEA models. However, the DEA-based efficiency scores are more similar in ranking order and stability over time. The inconsistency in efficiency characteristics under two different methods reminds policy makers and bank administrators to compare and select the appropriate efficiency frontier measure for each stage and specific economic conditions.
Originality/value
This paper shows the need to control for heterogeneity over banking groups and time as well as for random noise and outliers when measuring the cost efficiency.
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Anh Thi Phuong Le, Puvaneswaran Kunasekaran, Neethiahnanthan Ari Ravagan, Hung Ngoc Le, Tuan Thanh Nguyen and Thang Vu Luong
One Commune One Product (OCOP) program, a rural economic development program in Vietnam, aims to empower local communities for sustainable social and economic welfare development…
Abstract
Purpose
One Commune One Product (OCOP) program, a rural economic development program in Vietnam, aims to empower local communities for sustainable social and economic welfare development, protect the environment and preserve tradition. This study aims to employ this program associated with tourism to support small family businesses in rural areas cost-effectively.
Design/methodology/approach
This study used the geographic location mapping method to design tourist routes that connect tourism resources with OCOP producers. A stakeholder approach was employed to identify suggested practical works that need to be implemented while developing this tourism initiative.
Findings
Four rural districts of Bac Giang Province, a northern province in Vietnam known as the place of various indigenous people live and traditional craft villages. Many cultural and historical tourist sites have been chosen as sample areas for this study. By using Google map, based on the Bac Giang Tourist Map and a list of recognized OCOP products in Bac Giang Province, main tourist sites (16 locations) and small family businesses (known as cooperatives and households) that have OCOP products (17 places) in the four districts have been identified. Four notable tourist routes have been formed to propose four thematic tours (two 1-day tours and two 2 days-1 night homestay tours). Suggestions for related stakeholders to ensure the sustainability of this initiative are provided.
Research limitations/implications
This study is supposed to be a model of promoting small family businesses through OCOP programs and tourism activities in a sustainable way in Vietnam. The outcome of this study is in line with the stakeholder theory emphasizing the systematic connection of various stakeholders such as employees, suppliers, local communities, government agencies and others towards complex business sustainability. The results of the study cannot conclude the small family businesses in Vietnam because it adopts geographic location mapping alone. Moreover, this study focused on OCOP programs only. Future research can use other methods of primary data collection, especially from tourists' perspectives. Data triangulation can be done to explore and verify the tourist routes that have been formed according to the four thematic tours proposed. Future research could also compare hotels managed by family businesses with non-family businesses.
Originality/value
This study is supposed to be a model of promoting small family businesses through OCOP programs and tourism activities in a sustainable way in Vietnam.