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Open Access
Article
Publication date: 3 July 2020

Seung Kyu LEE and Truong An Dang

This study aims to investigate aspects related to the changing trends of the rainfall extremes in the entire Mekong Delta in the period of 32 years (1984-2015) applying rainfall…

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Abstract

Purpose

This study aims to investigate aspects related to the changing trends of the rainfall extremes in the entire Mekong Delta in the period of 32 years (1984-2015) applying rainfall extreme indices. First, the homogeneity tests were applied to assess the quality of observed rainfall data series. The authors, then, investigated three rainfall indices including the number of very heavy rainfall days 20 mm (R20), number of days above 50 mm (R50) and number of days above 100 mm (R100) applying the Mann-Kendall test and Sen’s slope estimate.

Design/methodology/approach

First, the homogeneity tests were applied to assess the quality of observed rainfall data series. The authors, then, investigated three rainfall indices including the number of very heavy rainfall days 20 mm (R20), number of days above 50 mm (R50) and number of days above 100 mm (R100) applying the Mann-Kendall test and Sen’s slope estimate.

Findings

The results of R20 pointed out that an insignificant upward tendency was found in the coastal provinces, whereas an insignificant downward tendency was also recorded in the inland provinces. Regarding the number of R50, a similar trend to R20 was recorded with five stations slightly increased and five stations slightly decreased. For the number of R100, the results recorded an absence of significant trends over the entire study area. Approximately 58.5% of stations show a slightly decreasing trend, while 41.5% of the remaining stations recorded a slightly increasing trend.

Originality/value

For the number of R100, the results recorded an absence of the significant trends over the entire study area. Approximately 58.5% of stations show a slightly decreasing trend, while 41.5% of the remaining stations recorded a slightly increasing trend. Of note is the fact that the number of R100 occurred more frequently in the northern provinces, which means the northern region is facing a high risk of flooding.

Details

International Journal of Climate Change Strategies and Management, vol. 12 no. 5
Type: Research Article
ISSN: 1756-8692

Keywords

Open Access
Article
Publication date: 5 October 2020

Truong An Dang

The purpose of this study is to evaluate the rainfall intensities and their limits for durations from 0.25 to 8 h with return periods from 2 to 100 years for Ca Mau City in…

1587

Abstract

Purpose

The purpose of this study is to evaluate the rainfall intensities and their limits for durations from 0.25 to 8 h with return periods from 2 to 100 years for Ca Mau City in Vietnam.

Design/methodology/approach

First, the quality of the historical rainfall data series in 44 years (1975–2018) at Ca Mau station was assessed using the standard normal homogeneity test and the Pettitt test. Second, the appraised rainfall data series are used to establish the rainfall intensity-duration-frequency curve for the study area.

Findings

Based on the findings, a two-year return period, the extreme rainfall intensities (ERIs) ranged from 9.1 mm/h for 8 h rainstorms to 91.2 mm/h for 0.25 h. At a 100-year return period, the ERIs ranged from 18.4 mm/h for 8 h rainstorms to 185.8 mm/h for 0.25 h. The results also show that the narrowest uncertainty level between the lower and upper limits recorded 1.6 mm at 8 h for the two-year return period while the widest range is at 42.5 mm at 0.25 h for the 100-year return period. In general, the possibility of high-intensity rainfall values compared to the extreme rainfall intensities is approximately 2.0% at the 100-year return period.

Originality/value

The results of the rainfall IDF curves can provide useful information for policymakers to make the right decisions in controlling and minimizing flooding in the study area.

Details

International Journal of Climate Change Strategies and Management, vol. 12 no. 5
Type: Research Article
ISSN: 1756-8692

Keywords

Article
Publication date: 25 November 2013

Khanh Tran Dang, Nhan Trong Phan and Nam Chan Ngo

The paper aims to resolve three major issues in location-based applications (LBA) known as heterogeneity, user privacy, and context-awareness by proposing an elastic and open…

Abstract

Purpose

The paper aims to resolve three major issues in location-based applications (LBA) known as heterogeneity, user privacy, and context-awareness by proposing an elastic and open design platform named OpenLS privacy-aware middleware (OPM) for LBA.

Design/methodology/approach

The paper analyzes relevant approaches ranging from both academia and mobile industry community and insists the importance of heterogeneity, user privacy, and context-awareness towards the development of LBA.

Findings

The paper proposes the OPM by design. As a result, the OPM consists of two main component named application middleware and location middleware, which are cooperatively functioned to achieve the above goals. In addition, the paper has given the implementation of the OPM as well as its experiments. It is noted that two privacy-preserving techniques at two different levels are integrated into the OPM, including Memorizing algorithm at the application level and Bob-tree at the database level. Last but not least, the paper shows further discussion about other problems and improvements that might be needed for the OPM.

Research limitations/implications

Each issue has its sub problems that cause more influences to the OPM. Besides, each of the issues requires more investigations in depth in order to have better solutions in detail. Therefore, more overall experiments should be conducted to assure the OPM's scalability and effectiveness.

Practical implications

The paper hopefully promotes and speeds up the development of LBA when providing the OPM with suitable application programming interfaces and conforming the OpenLS standard.

Originality/value

This paper shows its originality towards location-based service (LBS) providers to develop their applications and proposes the OPM as a unified solution dealing with heterogeneity, user privacy, and context-awareness in the world of LBS.

Details

International Journal of Pervasive Computing and Communications, vol. 9 no. 4
Type: Research Article
ISSN: 1742-7371

Keywords

Article
Publication date: 3 September 2020

Ngan Tuyet Truong, Duy Dang-Pham, Robert James McClelland and Mathews Nkhoma

This paper aims to propose a conceptual framework to investigate the influences of innovative services on customer satisfaction and behavioural intentions. As service innovation…

2283

Abstract

Purpose

This paper aims to propose a conceptual framework to investigate the influences of innovative services on customer satisfaction and behavioural intentions. As service innovation has been focusing on the influences of product and technology innovation, this paper provides another insight into service innovation.

Design/methodology/approach

The proposed conceptual framework is based on findings from reviewing key theories and concepts, together with relevant literature in the service operation management, service innovation and hospitality management.

Findings

The proposed conceptual framework can be used to test empirically and explicate customer satisfaction and behavioural intentions towards service innovation of the hospitability operations. There are seven determinants can influence customer satisfaction: innovative mechanic clues, innovative humanic clues and innovative functional clues to influence customer transaction-specific satisfaction; complexity, meaningfulness, novelty and affordability to influence customer overall satisfaction. Customer expectation is formed by social factors, information, knowledge and their need to influence their actual perception, and the comparison between customers’ expectation and actual perception cause their satisfaction. The relationships amongst transaction-specific satisfaction, overall satisfaction and behavioural intentions can explain customer satisfaction comprehensively as a process of before, during and after their perception.

Practical implications

This paper highlights the importance of innovative service delivery and customers’ evaluation to contribute to creating service innovation. A synthetic definition of service innovation emphasised can help practitioners to define key determinants to effectively influence customer satisfaction and their behavioural intentions. Thus, marketing strategy aligned with operation management, can be practised appropriately.

Originality/value

This study provides key determinants to influencing customer satisfaction of service innovation through innovative service delivery in the hospitality operation, based on key theories and relevant literature.

服务创新、顾客满意度、和行为意向:一个理论模型研究目的

本论文建立一个理论模型, 以研究创新型服务对顾客满意度和行为意向的影响。随着服务创新逐渐成为产品科技创新的焦点, 本论文针对服务创新提出一个新的角度。

研究设计/方法/途径

本论文采用审阅服务运营管理、服务创新、和酒店管理的关键理论和概念, 提出理论模型。

研究结果

本论文提出的理论模型可以进行实际测试, 以检测酒店运营中服务创新相关的顾客满意度和行为意向。研究表明, 影响顾客满意度的因素有七个:创新性硬件因子、创新性人文因子、创新性功能性因子以影响顾客交易方面的满意度、复杂性、有意义性、新意、以及可负担度以决定整体顾客满意度。顾客期待是由社会因子、信息、知识、和其影响实际感官的需求、以及顾客期待和实际感知之间的差别。交易性满意度、整体满意度、和行为意向之间的关系能够全面解释顾客满意度, 其在感知前、中、和后的过程中。

研究实际意义

本论文强调了创新性服务流程和顾客评价对服务创新的重要性。本论文综合文献给出服务创新的概念能够帮助从业人员找到有效影响顾客满意度和行为意向的关键因素。因此, 制定出配合运营管理中的营销策略。

研究原创性/价值

本论文根据审视关键理论和相关文献, 提出了酒店运营中营销服务创新的顾客满意度关键因素。

Article
Publication date: 6 July 2015

Philip Hallinger, Allan Walker and Gian Tu Trung

The purpose of this paper is to review both international and domestic (i.e. Vietnamese language) journal articles and graduate theses and dissertations on educational leadership…

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Abstract

Purpose

The purpose of this paper is to review both international and domestic (i.e. Vietnamese language) journal articles and graduate theses and dissertations on educational leadership in Vietnam. The review addresses two specific goals: first, to describe and critically assess the nature of the formal knowledge base on principal leadership in Vietnam, second, to synthesize findings from the existing literature on principal leadership in Vietnam.

Design/methodology/approach

The paper employed a method for conducting systematic reviews of research. The authors conducted a detailed, exhaustive search for international and “local” papers from Vietnam, yielding 120 research sources. Information from these papers was extracted and evaluated prior to analysis. Data analysis included both quantitative description of the “review database” as well as critical synthesis of substantive findings.

Findings

The review supports and extends an earlier review which found that the practice of educational leadership in Vietnam remains largely “invisible” to the international community of scholars. The review also yielded a highly critical assessment of research perspectives and methods used in the “local” Vietnamese studies which comprised the bulk of the authors’ database. Synthesis of substantive findings highlighted the manner by which organizational, political, and socio-cultural forces in the Vietnamese context shapes the practice of school leadership.

Research limitations/implications

First, qualitative studies are recommended that seek to describe, in-depth, the enactment of leadership in the Vietnamese context. Second, broad-scale surveys of characteristics, attitudes, and beliefs of school leaders across Vietnam are warranted. Third, the authors encourage graduate students and scholars studying school leadership in Vietnam to undertake a new generation of theory-informed studies that connect with the global literature.

Practical implications

Due to the relatively weak nature of the existing knowledge base, the authors were unable to identify specific implications for leadership practice. However, practical implications are identified for developing the research capacity needed to improve research quality in Vietnam’s universities.

Originality/value

This review is the first systematic review of educational leadership and management conducted of the Vietnamese literature. Moreover, the authors suggest that the review is original in its comprehensive coverage of both the local and international literature on educational leadership in Vietnam.

Details

Journal of Educational Administration, vol. 53 no. 4
Type: Research Article
ISSN: 0957-8234

Keywords

Article
Publication date: 7 December 2018

Susan Elizabeth Mate, Matthew McDonald and Truc Do

The purpose of this study is to contrast how the relationship between career and leadership development and workplace culture is experienced by women in two different countries…

2427

Abstract

Purpose

The purpose of this study is to contrast how the relationship between career and leadership development and workplace culture is experienced by women in two different countries and the implications this has for human resource development initiatives.

Design/methodology/approach

The study used a qualitative narrative research design to understand how the lived experiences of Australian and Vietnamese early- to mid-career female academics is engendered.

Findings

The study identified a number of key barriers and enablers that affected women’s career and leadership development. For the Australian participants, the main barrier included the competing demands of work and life and male dominated organisational cultures that discriminate against women in covert ways. The main enabler was mentoring and the building of professional networks that provided their careers with direction and support. For the Vietnamese participants, the main barriers were overt and included male-dominated organisational and societal cultures that limit their career and leadership development opportunities. The main enabler was having a sponsor or person with power in their respective organisation who would be willing to support their career advancement and gaining recognition from colleagues and peers.

Research limitations/implications

Gaining a deeper understanding of the barriers and enablers that effect women’s career and leadership development can be used to investigate how culturally appropriate developmental relationships can create ways to overcome the barriers they experience.

Originality/value

The study analysed the contrasting experiences of barriers and enablers from two cultures. The participants narrated stories that reflected on the gender politics they experienced in their career and leadership development. The narrative comparisons provide a unique lens to analyse the complex cultural experience of gender and work with potential implications for human resource development.

Details

International Journal of Organizational Analysis, vol. 27 no. 4
Type: Research Article
ISSN: 1934-8835

Keywords

Article
Publication date: 25 August 2022

Dinh Toan Nguyen, Dang Ha Anh Le, Linh Giang Truong, Ngan Giang Truong and Viet Vinh Vu

The study was conducted to investigate the impact of Generation Z's perceptions of brand activism on brand loyalty through the mediating role of brand attitude and brand trust.

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Abstract

Purpose

The study was conducted to investigate the impact of Generation Z's perceptions of brand activism on brand loyalty through the mediating role of brand attitude and brand trust.

Design/methodology/approach

The study first reviewed previous research and developed hypotheses related to the research objectives. Structural equation modelling (SEM) was conducted to test the hypotheses with the survey data of 1,133 individuals from Generation Z in Vietnam.

Findings

First, the findings indicated that: perceived argument quality, perceived authenticity, and perceived altruistic motives have a significant positive effect on brand attitude and brand trust. In addition, perceived self-interest motives have a significant positive effect on brand attitude. Brand trust has a significant positive effect on brand attitude. Finally, brand attitude and brand trust have a significant positive effect on brand loyalty. The study's empirical analysis carries implications for brand managers when implementing brand activism campaigns.

Originality/value

There is a paucity of research that investigates customers' perceptions of brand activism through perceived argument quality, perceived authenticity, perceived altruistic motives, and perceived self-interest motives and the influences of these on brand loyalty. The main contribution of this study is to fill this gap.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 35 no. 6
Type: Research Article
ISSN: 1355-5855

Keywords

Article
Publication date: 12 October 2015

V. Dao Truong, Nam V.H. Dang, C. Michael Hall and X. Dam Dong

This paper aims to investigate the internationalisation of social marketing research. Since the social marketing concept was introduced, it has captured increased research…

Abstract

Purpose

This paper aims to investigate the internationalisation of social marketing research. Since the social marketing concept was introduced, it has captured increased research attention of scholars. This is evidenced by a growing number of peer-reviewed publications and participation in academic conferences. Although the reasons behind the development of social marketing research have been suggested, its nature, significance and diffusion as a concept has not been examined from an international perspective.

Design/methodology/approach

A review of the social marketing and related literature was conducted to identify the patterns, drivers and actors of the internationalisation of social marketing research.

Findings

Different levels and dimensions of internationalisation were identified but the overall level of diffusion was relatively low. Growth is concentrated in developed countries. There appears to be a substantial gap with respect to the adoption of the concept by researchers based in the less developed countries.

Originality/value

This is arguably the first paper to explore the nature and significance of the degree of internationalisation of social marketing research.

Details

Journal of Social Marketing, vol. 5 no. 4
Type: Research Article
ISSN: 2042-6763

Keywords

Article
Publication date: 27 May 2021

V. Dao Truong, X. Dam Dong, Stephen Graham Saunders, Quynh Pham, Hanh Nguyen and Ngoc Anh Tran

This paper aims to examine how social marketing intervention programmes to measure, evaluate and document social marketing impact.

Abstract

Purpose

This paper aims to examine how social marketing intervention programmes to measure, evaluate and document social marketing impact.

Design/methodology/approach

A systematic review of 49 nutritional behaviour intervention programmes (2006–2020) was conducted. To examine the social marketing impact of the programmes, a logic model of social impact was used. The model comprises inputs (the resources used for an intervention programme), outputs (the direct products resulting from the use of resources), outcomes (short- to medium-term programme effects) and impacts (long-term programme effects on the individual, community or societal levels).

Findings

Most intervention programmes set the goal of encouraging their target audience to increase fruit and vegetable intake, choose healthy food items, drink less sugary beverages or consume low-fat diaries, while few others sought policy or systems change. Multiple criteria were used for impact evaluation (e.g. exposure and reach, changes in knowledge, awareness, attitudes, behaviours and body mass index). (Quasi) experiments were the most popular method used for impact measurement, followed by the pre-post model of impact. Positive changes were found in 33 programmes, often reported in terms of short-term outputs or outcomes. Long-term impact particularly on the broader societal level was not indicated.

Originality/value

This research offers a systematic review of how social marketing impact is measured, evaluated and documented. It also provides some guidance for social marketers on how to shift from a reductionist, behavioural outcome-focussed approach towards an “expansionist” impact approach that explicitly considers social marketing impacts on the quality of life of individuals, communities and societies.

Details

Journal of Social Marketing, vol. 11 no. 3
Type: Research Article
ISSN: 2042-6763

Keywords

Article
Publication date: 29 May 2020

Truc Thi-Minh Huynh, Chau Ngoc Dang, Long Le-Hoai, Anh-Duc Pham and Truong Duy Nguyen

This study aims to develop a strategic framework for the success of coastal urban projects in Vietnam, which is one of the Asia Pacific countries significantly affected by climate…

Abstract

Purpose

This study aims to develop a strategic framework for the success of coastal urban projects in Vietnam, which is one of the Asia Pacific countries significantly affected by climate change.

Design/methodology/approach

A questionnaire was used to collect data from practitioners in Vietnam. Principal component analysis (PCA) technique was used to identify critical success factors (CSFs) of coastal urban projects. A strategy map for the success of coastal urban projects was also proposed using the balanced scorecard (BSC) method.

Findings

This study identified 41 project success factors that could contribute to project success, and thence, extracted 11 CSFs for coastal urban projects using the PCA technique. In addition, 11 key performance indicators (KPIs) for coastal urban projects were listed and their linking with project success factors and CSFs was explored. Furthermore, a strategy map for the success of coastal urban projects was proposed using the BSC method. The strategy map included five perspectives: learning and growth, internal processes, social and environmental performance, financial performance, and stakeholders' satisfaction.

Originality/value

This study identified 11 CSFs for coastal urban projects and proposed a strategy map for the success of coastal urban projects.

Details

Engineering, Construction and Architectural Management, vol. 27 no. 10
Type: Research Article
ISSN: 0969-9988

Keywords

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