Search results

1 – 10 of 26
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 4 January 2024

Trung Hai Le

This paper investigates how various strategies for combining forecasts, both simple and optimised approaches, are compared with popular individual risk models in estimating…

187

Abstract

Purpose

This paper investigates how various strategies for combining forecasts, both simple and optimised approaches, are compared with popular individual risk models in estimating value-at-risk (VaR) and expected shortfall (ES) in emerging market at alternative risk levels.

Design/methodology/approach

Using the case study of the Vietnamese stock market, the author produced one-day-ahead VaR and ES forecast from seven individual risk models and ten alternative forecast combinations. Next, the author employed a battery of backtesting procedures and alternative loss functions to evaluate the global predictive accuracy of the different methods. Finally, the author investigated the relative performance over time of VaR and ES forecasts using fluctuation test.

Findings

The empirical results indicate that, although combined forecasts have reasonable predictive abilities, they are often outperformed by one individual risk model. Furthermore, the author showed that the complex combining methods with optimised weighting functions do not perform better than simple combining methods. The fluctuation test suggests that the poor performance of combined forecasts is mainly due to their inability to cope with periods of instability.

Research limitations/implications

This study reveals the limitation of combining strategies in the one-day-ahead VaR and ES forecasts in emerging markets. A possible direction for further research is to investigate whether this finding holds for multi-day ahead forecasts. Moreover, the inferior performance of combined forecasts during periods of instability motivates further research on the combining strategies that take into account for potential structure breaks in the performance of individual risk models. A potential approach is to improve the individual risk models with macroeconomic variables using a mixed-data sampling approach.

Originality/value

First, the authors contribute to the literature on the forecasting combinations for VaR and ES measures. Second, the author explored a wide range of alternative risk models to forecast both VaR and ES with recent data including periods of the COVID-19 pandemic. Although forecast combination strategies have been providing several good results in several fields, the literature of forecast combination in the VaR and ES context is surprisingly limited, especially for emerging market returns. To the best of the author’s knowledge, this is the first study investigating predictive power of combining methods for VaR and ES in an emerging market.

Details

The Journal of Risk Finance, vol. 25 no. 1
Type: Research Article
ISSN: 1526-5943

Keywords

Access Restricted. View access options
Article
Publication date: 22 February 2021

Trung Hai Le

The authors provide a comprehensive study on systemic risk of the banking sectors in the ASEAN-6 countries. In particular, they investigate the systemic risk dynamics and…

369

Abstract

Purpose

The authors provide a comprehensive study on systemic risk of the banking sectors in the ASEAN-6 countries. In particular, they investigate the systemic risk dynamics and determinants of 49 listed banks in the region over the 2000–2018 period.

Design/methodology/approach

The authors employ the market-based SRISK measure of Brownlees and Engle (2017) to investigate the systemic risk of the ASEAN-6's banking sectors.

Findings

The authors find that the regional systemic risk fluctuates significantly and currently at par or higher level than that of the recent global financial crisis. Systemic risk is generally associated with banks that have bigger size, more traditional business models, lower quality in their loan portfolios, less profitable and with lower market-to-book values. However, these relationships vary significantly between ASEAN countries.

Research limitations/implications

The research focuses on the systemic risk of ASEAN-6 countries. Therefore, the research results may lack generalizability to other countries.

Practical implications

The authors’ empirical evidence advocates the use of capital surcharges on the systemically important financial institutions. Although the region has been pushing to higher financial integration in recent years, the authors encourage the regional regulators to account for the idiosyncratic characteristics of their banking sectors in designing effective macroprudential policy to contain systemic risk.

Originality/value

This paper provides the first study on the systemic risk of the ASEAN-6 region. The empirical evidence on the drivers of systemic risk would be of interest to the regional regulators.

Details

International Journal of Emerging Markets, vol. 17 no. 8
Type: Research Article
ISSN: 1746-8809

Keywords

Access Restricted. View access options
Article
Publication date: 31 December 2024

Phuong Kim Thi Tran, Nhi Thao Ho-Mai, Nhi Uyen Thi Nguyen, Uyen Phuong Thi Mai, Nhi Uyen Ngoc Nguyen, Duong Hai Thi Bui, Huy Van Le and Vinh Trung Tran

From the customer-relationship theory and attachment theory approaches, this study proposes a serial mediation model to examine how celebrity attachment influences event…

83

Abstract

Purpose

From the customer-relationship theory and attachment theory approaches, this study proposes a serial mediation model to examine how celebrity attachment influences event attendees' intentions in the celebrity endorsement process in the context of events.

Design/methodology/approach

Paper-based and online surveys were used to collect data from 759 Vietnamese respondents, aged 15 and above, who followed domestic or international celebrities and were interested in various events taking place in Vietnam. A serial multiple mediation model was evaluated through covariance-based structural equation modeling.

Findings

The results confirmed the cognitive, affective and hybrid cognitive-affective pathways among antecedents, celebrity attachment and event participation intentions.

Research limitations/implications

Future studies need to validate these findings across diverse cultural settings and larger participant pools to enhance their applicability. Exploring celebrity endorsement for events from an international follower perspective could offer valuable insights. Future research should consider these factors when interpreting results. It may benefit from conducting longitudinal or mixed-method studies to improve generalizability. Additional moderating variables are necessary, as research on the celebrity endorsement process for events evolves.

Originality/value

This study contributes to the literature on celebrity endorsement within event marketing, emphasizing the customer-brand relationship and attachment theory. It extends existing research that primarily examines how celebrity attachment influences event attendees' intentions in the celebrity endorsement process by validating a serial mediation model.

Details

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

Keywords

Available. Open Access. Open Access
Article
Publication date: 28 March 2024

Hiep-Hung Pham, Ngoc-Thi Nhu Nguyen, Luong Dinh Hai, Tien-Trung Nguyen and Van An Le Nguyen

With the advancement of technology, microlearning has emerged as a promising method to improve the efficacy of teaching and learning. This study aims to investigate the document…

1302

Abstract

Purpose

With the advancement of technology, microlearning has emerged as a promising method to improve the efficacy of teaching and learning. This study aims to investigate the document types, volume, growth trajectory, geographic contribution, coauthor relationships, prominent authors, research groups, influential documents and publication outlets in the microlearning literature.

Design/methodology/approach

We adapt the PRISMA guidelines to assess the eligibility of 297 Scopus-indexed documents from 2002 to 2021. Each was manually labeled by educational level. Descriptive statistics and science mapping were conducted to highlight relevant objects and their patterns in the knowledge base.

Findings

This study confirms the increasing trend of microlearning publications over the last two decades, with conference papers dominating the microlearning literature (178 documents, 59.86%). Despite global contributions, a concentrated effort from scholars in 15 countries (22.39%) yielded 68.8% of all documents, while the remaining papers were dispersed across 52 other nations (77.61%). Another significant finding is that most documents pertain to three educational level categories: lifelong learning, higher education and all educational levels. In addition, this research highlights six key themes in the microlearning domain, encompassing (1) Design and evaluation of mobile learning, (2) Microlearning adaptation in MOOCs, (3) Language teaching and learning, (4) Workflow of a microlearning system, (5) Microlearning content design, (6) Health competence and health behaviors. Other aspects analyzed in this study include the most prominent authors, research groups, documents and references.

Originality/value

The finding represents all topics at various educational levels to offer a comprehensive view of the knowledge base.

Details

Journal of Research in Innovative Teaching & Learning, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2397-7604

Keywords

Access Restricted. View access options
Article
Publication date: 17 February 2025

Hiep-Hung Pham, Thanh-Thao Thi Phan, Oanh Pham, Trung Tien Nguyen, Van-An Le Nguyen, Minh-Trang Do and Anh Tuan Nguyen

This study aims to investigate the trend of research on universities and accountability (UAA) in Southeast Asian (SEA) countries.

2

Abstract

Purpose

This study aims to investigate the trend of research on universities and accountability (UAA) in Southeast Asian (SEA) countries.

Design/methodology/approach

A total of 115 journal articles, conference papers, books and book chapters were obtained from the Scopus database spanning the years 1996–2023. These documents were subsequently analyzed using bibliometric methods.

Findings

The majority of UAA in SEA documents were published between 2007 and 2023 (106 documents, 92.19%). Scholars from both SEA countries and outside the region, particularly Australia, co-authored UAA in SEA documents. While scholars from Vietnam contributed the highest number of UAA in SEA publications (30 documents), scholars from Australia received the highest number of citations (878 citations). Collaboration between Vietnam and Australia emerged as the most productive partnership in conducting studies on UAA in SEA. Additionally, UAA in SEA documents were published not only in education-related outlets but also in other sectors, particularly in public policy. Furthermore, studies on UAA in different countries exhibited both similar and dissimilar interest keywords.

Originality/value

This study represents the first bibliometric analysis focusing on UAA in SEA literature. The insights and implications derived from this study are valuable for future researchers, university leaders and policymakers.

Details

International Journal of Comparative Education and Development, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2396-7404

Keywords

Access Restricted. View access options
Article
Publication date: 5 October 2015

Tony de Souza-Daw, Robert Ross, Truong Duy Nhan, Le Anh Hung, Nguyen Duc Quoc Trung, Le Hai Chau, Hoang Minh Phuong, Le Hoang Ngoc and Mathews Nkhoma

The purpose of this paper is to present a low-cost, highly mobile system for performing street-level imaging. Street-level imaging and geo-location-based services are rapidly…

208

Abstract

Purpose

The purpose of this paper is to present a low-cost, highly mobile system for performing street-level imaging. Street-level imaging and geo-location-based services are rapidly growing in both popularity and coverage. Google Street View and Bing StreetSide are two of the free, online services which allow users to search location-based information on interactive maps. In addition, these services also provide software developers and researchers a rich source of street-level images for different purposes – from identifying traffic routes to augmented reality applications. Currently, coverage for Street View and StreetSide is limited to more affluent Western countries with sparse coverage throughout south-east Asia and Africa. In this paper, we present a low-cost system to perform street-level imaging targeted towards the congested, motorcycle-dominant south-east Asian countries. The proposed system uses a catadioptric imaging system to capture 360-degree panoramic images which are geo-located using an on-board GPS. The system is mounted on the back of a motorcycle to provide maximum mobility and access to narrow roads. An innovative backwards remapping technique for flattening the images is discussed along with some results from the first 150 km which have been captured from Southern Vietnam.

Design/methodology/approach

The design was a low-cost prototype design using low-cost off-the-shelf hardware with custom software and assembly to facilitate functionality.

Findings

The system was shown to work well as a low-cost omnidirectional mapping solution targeted toward sea-of-motorbike road conditions.

Research limitations/implications

Some of the pictures returned by the system were unclear. These could be improved by having artificial lighting (currently only ambient light is used), a gyroscope-stabilised imaging platform and a higher resolution camera.

Originality/value

This paper discusses a design which facilitates low-cost, street-level imaging for a sea-of-motorcycle environment. The system uses a catadioptric imaging approach to give a wide field of view without excessive image storage requirements using dozens of cameras.

Details

Journal of Engineering, Design and Technology, vol. 13 no. 4
Type: Research Article
ISSN: 1726-0531

Keywords

Access Restricted. View access options
Article
Publication date: 8 February 2024

Dung Phuong Hoang, Dang Nguyen Hai, Vy Thanh Ngoc Nguyen, Hieu Trung Nong, Phong Tran Pham and Tam Minh Tran

Modernization and the rise of living standards have introduced new variants of traditional foods, from their tastes to the way they are enjoyed. This study aims to explore and…

765

Abstract

Purpose

Modernization and the rise of living standards have introduced new variants of traditional foods, from their tastes to the way they are enjoyed. This study aims to explore and examine the impacts of both traditional and modern marketing stimuli on restaurant choice intention for experiencing culinary traditions, hence answering the question of how traditional and modern aspects live together to bring about the most desirable experience for customers of traditional cuisine.

Design/methodology/approach

Based on the stimuli-organism-response (S-O-R) theory and mixed research methods, a model linking service quality dimensions, perceived value and restaurant choice intention is formulated and tested on quantitative data from 431 customers of Gen Y and Gen Z, given the case of Vietnamese Pho.

Findings

The findings show that food quality demonstrates the strongest impact on restaurant choice intention, followed by authenticity and nostalgia marketing. These relationships are partially mediated by perceived value. Hygiene risks and perceived value are also found to directly affect restaurant choice intention. Nevertheless, our findings are quite different between Gen Y and Gen Z customers.

Practical implications

This research provides crucial strategic implications for restaurant managers when it comes to serving traditional foods for different generations.

Originality/value

This study responds to the existing gap by examining and comparing the impacts of traditional and modern marketing stimuli on restaurant choice intention through the mediating role of perceived value. Our study also actively contributes to the ongoing multigenerational research stream by affirming the moderation role of generations (Gen Y and Gen Z) in those relationships.

Details

Journal of Hospitality and Tourism Insights, vol. 7 no. 2
Type: Research Article
ISSN: 2514-9792

Keywords

Access Restricted. View access options
Article
Publication date: 17 September 2019

Hai Hong Dinh

The purpose of this paper is to trace the way in which a popular ritual became one of Vietnam’s most important festivals, elevated as a celebration of national heroism and charts…

98

Abstract

Purpose

The purpose of this paper is to trace the way in which a popular ritual became one of Vietnam’s most important festivals, elevated as a celebration of national heroism and charts its gradual transformation in modern society.

Design/methodology/approach

This research focuses on the combination of a fertility rite and narratives of St Gióng based on nationalism or heroism created a special festival reflecting many traditional cultural characteristics of Vietnam and the Việt people and the transformation of St Gióng from a mythological to a national symbol of heroism in anti-invader history was recorded in texts.

Findings

The paper casts light on the mythologization and historicization of St Gióng in Vietnam’s particular historical context by decoding the Gióng symbol as a core element of the folktales and myths about St Gióng to understand the formation and development of St Gióng in the cultural history of Vietnam.

Research limitations/implications

The paper is not exploring the Gióng symbol within a larger cultural context of nationalism and ethnosymbolic approach in a comparison of national symbolism and heroism.

Practical implications

The paper includes implications for advised scholars to conduct further exploration of the symbol and myth of not only St Gióng in Vietnam but also Kubera in India and Vaisravana in China to connect Kubera, Vaisravana and St Gióng under the connection of literal myth and heroic symbol.

Social implications

The paper shows how processes of historicizing myth and mythologizing history are important features of Vietnamese socio-historical research.

Originality/value

The paper shows how a fertility rite became a historical festival and the figure of St Gióng became a symbol of patriotic heroism.

Details

Asian Education and Development Studies, vol. 9 no. 1
Type: Research Article
ISSN: 2046-3162

Keywords

Access Restricted. View access options
Article
Publication date: 27 June 2019

Felicitas Evangelista, Brian Koon Low and Minh Thanh Nguyen

Despite huge investments within the modern trade arena, Vietnam remains a traditional trade retailing country. The purpose of this paper is to establish the combined effects of…

1366

Abstract

Purpose

Despite huge investments within the modern trade arena, Vietnam remains a traditional trade retailing country. The purpose of this paper is to establish the combined effects of motivation, store attributes and demographic factors on the predictive outcome of store format choice in Vietnam.

Design/methodology/approach

A logistic regression model is used to determine the effect of these factors on the predictive outcome of traditional markets or supermarkets in purchasing non-food products or processed food products.

Findings

The dichotomy between what supermarkets and traditional markets have to offer is simple but effective. Utilitarian-motivated shoppers are more likely to shop at traditional markets. They emphasize the need to buy products quickly, find a good price, with less travel time and hence lower travel costs. Hedonistic shoppers are motivated by feelings of happiness; they shop to relieve stress and to keep up with trends. Significant difference in store choice also exists between older and higher income shoppers.

Research limitations/implications

Future research should examine the sociocultural dimensions of shopping at traditional stores by exploring how such shopping relates to, and is embedded in, the formation and changes of individual identity, especially in communities outside of Ho Chi Minh City where shoppers are almost entirely dependent on traditional stores.

Practical implications

Traditional stores have the benefit of convenient location and savings in both time and travel costs. These benefits are being eroded as supermarkets and transnational retail corporations establish new stores close to the traditional stores.

Social implications

Shopping at traditional markets is part of the social culture and is embedded in individuals’ identity formation, despite increasing urbanization and shoppers’ higher incomes.

Originality/value

This study comprehensively explores the interactions between store choice and motivation, store attributes and demographic factors, taking into account contemporary and contextually relevant factors.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 32 no. 1
Type: Research Article
ISSN: 1355-5855

Keywords

Access Restricted. View access options
Article
Publication date: 2 November 2021

Hai Minh Ngo, Ran Liu, Masahiro Moritaka and Susumu Fukuda

Research on the determinants of consumer behavior toward food with safety certifications in Vietnam remains little. The primary objective of this study is to identify the factors…

650

Abstract

Purpose

Research on the determinants of consumer behavior toward food with safety certifications in Vietnam remains little. The primary objective of this study is to identify the factors affecting Vietnamese consumer intention to purchase safely certified vegetables (safe vegetables) based on an extended theory of planned behavior (TPB).

Design/methodology/approach

Using a sample of 361 urban consumers in Hanoi city based on a stratified sampling technique, we applied structural equation modeling (SEM) to test the model.

Findings

The results revealed that the extended TPB succeeded to predict 62% of the variance of intention to purchase safe vegetables. Attitude played the most important role in consumer intention. Notably, the attitude of consumers was the most largely influenced by subjective norms (social effects). Also, subjective norms had a direct effect on intention. Furthermore, consumer trust motivated a favorable attitude to increase purchase intention. The effects of past behavior on intention were verified as direct and indirect through subjective norm and trust combined with attitude. Few socio-demographic variables (e.g. age and education) were found to affect intention indirectly through attitude and subjective norm.

Research limitations/implications

Further research on the relationship between intention and the actual purchase of safe food is needed.

Originality/value

This extends the application of the TPB to predict consumer intention to purchase safely certified food in a developing country like Vietnam by examining both direct and indirect effects of socio-demographic variables, trust and past behavior on intention.

Details

Journal of Agribusiness in Developing and Emerging Economies, vol. 13 no. 2
Type: Research Article
ISSN: 2044-0839

Keywords

1 – 10 of 26
Per page
102050