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1 – 10 of 20Tran Khanh Dang, Tuyen Thi Kim Le, Anh Tuan Dang and Ha Duc Son Van
The paper aims to propose a flexible framework to support X-STROWL model. Extensible access control markup language (XACML) is an international standard used for access control in…
Abstract
Purpose
The paper aims to propose a flexible framework to support X-STROWL model. Extensible access control markup language (XACML) is an international standard used for access control in distributed systems. However, XACML and its existing extensions are not sufficient to fulfill sophisticated security requirements (e.g. access control based on user’s roles, context-aware authorizations and the ability of reasoning). Remarkably, X-STROWL, a generalized extension of XACML for spatiotemporal role-based access control (RBAC) model with reasoning ability, is a comprehensive model that overcomes these shortcomings. It mainly focuses on the architecture design as well as the implementation and evaluation of proposed framework and the comparison with others.
Design/methodology/approach
Based on the concept of X-STROWL model, the paper reviewed a large amount of open sources implementing XACML with defined criteria and chose the most suitable framework to be extended for the implementation. The paper also presented a case study used to evaluate the research result.
Findings
Holistic enterprise-ready application security framework – architecture framework (HERAS-AF) is chosen as the most suitable framework to be extended to implement X-STROWL model. Extending HERAS-AF to support spatiotemporal aspect and other contextual conditions as well as the way to integrate security in the access request, together with ability of reasoning for hierarchical roles, are striking features that make the proposed framework able to meet more sophisticated security requirements in comparison with others.
Research limitations/implications
Due to the research content, the performance of proposed framework is not the focused issue of this work.
Originality/value
The proposed framework is a crucial contribution of our research to provide a holistic, extensible and intelligent authorization decision engine.
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Nguyen Tuan Anh, Christopher Gan and Dao Le Trang Anh
This study simultaneously explores the nexus among formal, semiformal and informal credit markets and farm households' credit demand determinants in Vietnam.
Abstract
Purpose
This study simultaneously explores the nexus among formal, semiformal and informal credit markets and farm households' credit demand determinants in Vietnam.
Design/methodology/approach
This study uses a multistage stratified random sampling process for a survey of 648 smallholder farmers in the Red River Delta (RRD), Vietnam. The trivariate probit model (TVPM) is used to address the interdependence of farm households' credit demands in different credit markets.
Findings
The results reveal complementary relationships among two pairs of credit markets (formal versus informal and semiformal versus informal). There are dissimilarities among the determinants (household characteristics, household head's characteristics, credit history and geographic factors) of farm households' credit demands in different markets, reflecting segmentation of Vietnam credit markets.
Practical implications
The study's empirical findings are important for policymakers and credit providers to enhance farm households' access to credit for agriculture and to improve the operations of the three credit markets.
Originality/value
This is the first empirical study in Vietnam and one of few in other developing countries simultaneously exploring the determinants of credit demand in and interrelationships among all three credit markets to provide more comprehensive and accurate results.
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Tam To Nguyen, Huong Quoc Dang and Tuan Le-Anh
This paper proposed an adaptation of the theory of planned behavior (TPB) model to study the factors influencing organic food purchase behavior in an emerging market. This…
Abstract
Purpose
This paper proposed an adaptation of the theory of planned behavior (TPB) model to study the factors influencing organic food purchase behavior in an emerging market. This research introduced household norms as an important factor that reflected the influence of household activities and family pressure on individuals to perform organic food purchase behaviors. The role of trust in organic food as a direct and a moderating factor was examined in the proposed framework as well.
Design/methodology/approach
The study proposed a model with 10 hypotheses from the literature review. The hypotheses were tested using data collected from 407 organic food customers in Hanoi, Vietnam. The partial least squares structural equation modeling (PLS-SEM) approach was used for analysis.
Findings
The results indicated that household norms played an important role influencing purchase intention and behavior. This research also showed that trust in organic food directly affected purchase intention and played a moderating role on the attitude towards organic food and purchase intention relationship. However, trust in organic food did not show moderating effects on other relationships in the model.
Research limitations/implications
More context-specific reasons may be incorporated into the research model to better explain consumer purchase behaviors.
Originality/value
The role of household norms and its impact under TPB has not been investigated for organic food purchase behaviors, particularly in emerging markets.
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Hung Duy Nguyen, Tuan Anh Nguyen, Vi Vu Doan and Chau Ngoc Dang
Public–private partnership (PPP) projects play a pivotal role in fostering infrastructure development in developing countries. This study aims to identify major barriers and…
Abstract
Purpose
Public–private partnership (PPP) projects play a pivotal role in fostering infrastructure development in developing countries. This study aims to identify major barriers and critical success factors (CSFs) for PPP projects in Vietnam.
Design/methodology/approach
The study initially conducted an extensive literature review and interviewed industry experts to compile a comprehensive list of barriers and success factors. Subsequently, a survey involving 250 construction professionals was conducted to assess these identified factors. The research used both ANOVA test and hierarchical regression analysis to explore the relationship between participants’ characteristics and assessments.
Findings
The results could provide a valuable reference for practitioners by assessing barriers and CSFs in PPP projects. Specifically, the ANOVA analysis indicated a positive correlation between barrier assessment and participants’ experience, while the influence of participants’ sector on the evaluation was minor. Furthermore, the hierarchical regression analysis demonstrated that participants’ sector did not moderate the relationship between barrier assessment and industry experience.
Originality/value
This research contributes to the existing literature by offering empirical insights into barriers and CSFs specific to PPP projects in a developing country context. The findings highlight the crucial role of experienced professionals in ensuring PPP project success. Moreover, the study provides construction practitioners with a better understanding of the essential factors and supports the development of effective management strategies for future PPP projects.
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Thien Vuong Nguyen, Dai Lam Tran, Tuan Anh Nguyen, Thi Thanh Huong Nguyen, Phi Hung Dao, Van Phuc Mac, Minh Thanh Do, Thi Mai Nguyen and Thi My Linh Dang
This study aims to explore how the inhibitor-loaded nanocontainers can be used in the epoxy coating for protection of steel against corrosion. A self-healing anticorrosive coating…
Abstract
Purpose
This study aims to explore how the inhibitor-loaded nanocontainers can be used in the epoxy coating for protection of steel against corrosion. A self-healing anticorrosive coating can be easily fabricated by embedding the inhibitor-loaded nanocontainers into the epoxy coating matrices. For this purpose, first, cerium (a catholic corrosion inhibitor) is encapsulated into silica nanoparticles (SiO2@Ce). Thereafter, an epoxy nanocomposite coating has been prepared on steel substrate using these SiO2@Ce nanoparticles as nanofillers.
Design/methodology/approach
To examine the effect of SiO2@Ce nanocontainers on mechanical properties of epoxy coating, the abrasion resistance, impact resistance and adhesion strength of coating have been evaluated. To reveal the effect of SiO2@Ce nanocontainer on corrosion behavior of epoxy-coated steel, the electrochemical impedance spectroscopy (EIS) has been conducted in NaCl solution.
Findings
Transmission electron microscopy and scanning electron microscopy/Energy-dispersive X-ray spectroscopy analyses indicate that Ce3+ cations have been successfully loaded into the surface of silica nanoparticles (at the content of approximately 2 Wt.%). Mechanical tests of epoxy nanocomposite coatings indicate that the nanocomposite coatings with nanoparticles content of 2.5 Wt.% provide the highest values of abrasion resistance, impact resistance and adhesion strength. EIS results show that the presence of SiO2@Ce3+ nanocontainers increases both coating resistance and polarization resistance. Along with the improvement the coating barrier performance, Ce inhibitor plays an important role in improving the anticorrosive performance at the steel–electrolyte interface.
Originality/value
The application of self-healing epoxy/SiO2@Ce nanocomposite coatings for the protection of carbon steel is very promising.
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Vu Tuan Anh Nguyen, Jin-Ho Park and Yangsook Jeon
This paper focuses on the evolution of and changes in French colonial architectural designs over time in terms of the use of vernacular architectural features of Vietnam.
Abstract
Purpose
This paper focuses on the evolution of and changes in French colonial architectural designs over time in terms of the use of vernacular architectural features of Vietnam.
Design/methodology/approach
It first examines the underlying principles of spatial compositions behind traditional vernacular architecture, thus revealing vernacular architectural values that have survived from the past. Styles of vernacular houses differ by region; thus, their unique spatial characteristics are analyzed by selecting the typical houses in each region. The study also illuminates ecological features and technical norms tailored to the local climate and Vietnamese traditional architecture. It examines how local and regional characters of vernacular houses affect the developments and changes in the French colonial public buildings in Vietnam, forming an identity that represents an eclectic Indochina style with the adaptation of local discourses on climate.
Findings
The Vietnamese have developed unique architectural styles that are inextricably linked to their identities, cultures, climates and livelihoods – for example, vernacular houses. Although at the beginning of the colonial period, the French imported their styles, decorations and details, which were foreign to the Vietnamese, later, they perhaps realized that such direct import was no longer suitable for the natural and socio-cultural situation of the colony. Toward the end of the colonial period, it is noticeable that French colonial architects gradually started using local design principles.
Research limitations/implications
Although many existing buildings can be further added for the discussion, we limit a few cases, due to the length of the paper.
Social implications
This paper proves that toward the end of the colonial period, colonial architecture in Vietnam became increasingly localized, adapting to the local environment and climate. The buildings during the period were gradually associated with Vietnamese culture and sentiment.
Originality/value
Although few papers deal with the vernacular architecture in Vietnam with regard to local climate and regional characteristics, there are no paper that related the vernacular Vietnamese houses to influence the French colonial designs in Vietnam. Therefore the paper has value and significance.
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Huu Minh Nguyen, Thi Hong Tran and Thi Thanh Loan Tran
“The world needs science, science needs women” is the message given by UNESCO in the program for the development of women in science” (UNESCO, 2017). In Vietnam, women’s…
Abstract
“The world needs science, science needs women” is the message given by UNESCO in the program for the development of women in science” (UNESCO, 2017). In Vietnam, women’s participation and achievements in scientific research is considered a great and important resource for industrialization and modernization. Even so, are there gender differences in scientific achievement in the social science research institutes in Vietnam? What factors influence the scientific achievement of female social researchers? The answers will be based on data from a 2017 survey with a sample of 756 researchers, of which 77.6% were female. The survey was conducted by the Vietnam Academy of Social Sciences, a leading, ministry-level national center for the social sciences in Vietnam. This chapter analyzed the scientific achievements of researchers through their position as principal investigators of research projects and their publications, and factors that may impact this. Bivariate and multivariate analyses of factors that may affect the scientific achievement of researchers found that gender differences in academic achievement in the social sciences in Vietnam was still prevalent. Female researchers’ scientific achievements were lower than those of their male counterparts. The contribution to science of Vietnamese female researchers was limited by many different factors; the most important were the academic rank of the researchers and gender stereotype that considered housework the responsibility of women.
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Wann-Yih Wu, Tuan Anh Bui and Tuan Cong Dao
This study investigates the influence of cross-cultural stable and dynamic competencies on expatriate adaptation and outcomes.
Abstract
Purpose
This study investigates the influence of cross-cultural stable and dynamic competencies on expatriate adaptation and outcomes.
Design/methodology/approach
This study surveys 10 expatriates in Taiwan and conducts qualitative analysis based on the newly collected original data.
Findings
The study's results confirm that cross-cultural stable and dynamic competencies improve expatriates' cross-cultural adaptation, enhancing expatriate outcomes in cross-cultural environments.
Originality/value
This study contributes to cross-cultural management research by clarifying the characteristics and action mechanisms of cross-cultural stable competencies (including cultural empathy, emotional stability, social initiative, open-mindedness and flexibility) and cross-cultural dynamic competencies (including relational skills, general self-efficacy and non-ethnocentrism) in the international business context. The study's findings suggest future research directions in the empirical investigation of the antecedents, characteristics and results of cross-cultural competencies, cross-cultural adaptation and expatriate outcomes.
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Ho Xuan Thuy, Nguyen Vinh Khuong, Le Huu Tuan Anh and Pham Nhat Quyen
This study aims to investigate the association between corporate governance (CG) and the corporate social responsibility (CSR) information disclosure as well as the moderating…
Abstract
Purpose
This study aims to investigate the association between corporate governance (CG) and the corporate social responsibility (CSR) information disclosure as well as the moderating role of state-ownership between CG and CSR disclosure.
Design/methodology/approach
To examine the relationship between CG and CSR disclosure, this study used the feasible general least squares and generalized method of moments method on a sample of 165 non-financial quoted companies over the 2015–2018 period, which account for about three-fourths of the Vietnamese stock exchange.
Findings
The findings suggest that enterprises with smaller board size consisting mainly of independent directors have a higher CSR disclosure level. Moreover, when the chief executive officer is concurrently the chairman of the board, the level of CSR disclosure falls. Additionally, the moderating role of state ownership enhances CSR disclosure.
Research limitations/implications
The empirical results of this study form a solid foundation for policymakers and other stakeholders’ decisions in investing or establishing policies.
Originality/value
This study provides empirical evidence on the relationship between CG and CSR disclosure in Vietnam – a developing country with no legal requirement on CSR disclosure. Moreover, this study emphasizes the moderating role of state ownership between CG and CSR disclosure, which clarifies the role of state ownership in establishing CG mechanisms.
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Giang Hoang, Thuy Thu Thi Le, Anh Kim Thi Tran and Tuan Du
This study aims to explore the mediating roles of self-efficacy and learning orientation in the relationship between entrepreneurship education and entrepreneurial intentions of…
Abstract
Purpose
This study aims to explore the mediating roles of self-efficacy and learning orientation in the relationship between entrepreneurship education and entrepreneurial intentions of university students in Vietnam.
Design/methodology/approach
The data were collected from an online survey of 1,021 university students in Vietnam. The authors conducted a hierarchical regression analysis to test the hypotheses.
Findings
The results of hierarchical regression analysis reveal that entrepreneurship education positively affects entrepreneurial intentions, and this relationship is mediated by both learning orientation and self-efficacy.
Research limitations/implications
This study confirms the importance of entrepreneurship education in encouraging university students' entrepreneurial intentions.
Practical implications
This study offers practical implications for universities and policy makers.
Social implications
This study is one of the first to empirically examine the concept of entrepreneurship education and entrepreneurial intentions in an Asia-Pacific context.
Originality/value
This study emphasises the significance of entrepreneurship education and its effects on university students' entrepreneurial intentions. Furthermore, the findings confirm that self-efficacy and learning orientation play an important part in explaining how entrepreneurship education relates to entrepreneurial intentions.
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