Nguyen Thi Dinh, Nguyen Thi Uyen Nhi, Thanh Manh Le and Thanh The Van
The problem of image retrieval and image description exists in various fields. In this paper, a model of content-based image retrieval and image content extraction based on the…
Abstract
Purpose
The problem of image retrieval and image description exists in various fields. In this paper, a model of content-based image retrieval and image content extraction based on the KD-Tree structure was proposed.
Design/methodology/approach
A Random Forest structure was built to classify the objects on each image on the basis of the balanced multibranch KD-Tree structure. From that purpose, a KD-Tree structure was generated by the Random Forest to retrieve a set of similar images for an input image. A KD-Tree structure is applied to determine a relationship word at leaves to extract the relationship between objects on an input image. An input image content is described based on class names and relationships between objects.
Findings
A model of image retrieval and image content extraction was proposed based on the proposed theoretical basis; simultaneously, the experiment was built on multi-object image datasets including Microsoft COCO and Flickr with an average image retrieval precision of 0.9028 and 0.9163, respectively. The experimental results were compared with those of other works on the same image dataset to demonstrate the effectiveness of the proposed method.
Originality/value
A balanced multibranch KD-Tree structure was built to apply to relationship classification on the basis of the original KD-Tree structure. Then, KD-Tree Random Forest was built to improve the classifier performance and retrieve a set of similar images for an input image. Concurrently, the image content was described in the process of combining class names and relationships between objects.
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Le Quang Hieu, Vu Hong Van and Nguyen Khanh Doanh
This study analyzes the factors that affect the decisions of micro-businesses to switch to enterprises in Thanh Hoa, Vietnam.
Abstract
Purpose
This study analyzes the factors that affect the decisions of micro-businesses to switch to enterprises in Thanh Hoa, Vietnam.
Design/methodology/approach
In order to explain the behavior of micro-businesses in switching to enterprises, the authors designed a questionnaire and collected survey data from 404 micro-businesses. The generalized structural equation modeling was applied to analyze the structured model with the dichotomous dependent variable.
Findings
First, the behavior of micro-businesses to switch was indirectly affected by needs and directly affected by attitudes, perceived behavioral control, subjective norm and institutional quality. Second, the subjective norms exerted the most influence on the behavior of the micro-businesses in switching. This finding implies that (1) the behavior of the micro-businesses depended on the assessments, perceptions and views of their friends, relatives and colleagues, and (2) the behavior to switch stems mainly from the desire to improve the businesses' position in society. Finally, both formal and informal institutions play an essential role in the behavior of the micro-businesses to switch to enterprises.
Originality/value
There have been no previous studies that have applied structured models to test the behavior of micro-businesses to switch to enterprises. Furthermore, previous studies had mainly addressed the psychological factors or needs of micro-businesses. In this study, apart from the above factors, the authors discuss the impact of institutions on the behavior of micro-businesses to switch.
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Agricultural systems in Mekong Delta have transformed to cope with climate change. Various researches pointed out that integrated agriculture-aquaculture (IAA) farming systems…
Abstract
Purpose
Agricultural systems in Mekong Delta have transformed to cope with climate change. Various researches pointed out that integrated agriculture-aquaculture (IAA) farming systems (i.e., rice-shrimp, rice-fish…) emerged as potential climate adaptive practices. However, limited studies are attempting to assess the sustainability of these agricultural practices. Therefore, it is essential to assess whether or not these systems will be sustainable in the context of climate change and what can be done to make it sustainable. The present study conducted the sustainability assessment of the rice-shrimp system to identify potential areas for improvement as well as policy implication to increase resilience and adaptation of coastal IAA system which could contribute to the understanding of other coastal agricultural deltas around the globe.
Design/methodology/approach
This study used a quantitative approach including the assessment protocol of van Asselt et al. (2014), the assessment framework of Vanloon et al. (2005), and the MCA methodology to flexibly and holistically assess the sustainability level of agricultural systems.
Findings
Results concluded that rice-shrimp systems have the potential to improve livelihood, food security, and adaptation of coastal farmers. Major improvements should be considered for productivity, efficiency, and equity themes, while minor improvements can be made for stability, durability, and compatibility themes.
Originality/value
This research could be used as a guideline for sustainability assessment in a context-specific case study of IAA, which showed a potential for the application of other climate-smart IAAs in similar contexts around the globe.
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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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Dao Van Le and Tuyen Quang Tran
This study explores the effect of local budget retention rate changes (RER) on total factor productivity (TFP) and its components in Vietnam.
Abstract
Purpose
This study explores the effect of local budget retention rate changes (RER) on total factor productivity (TFP) and its components in Vietnam.
Design/methodology/approach
The study employs a two-system generalized method of moments (GMM) estimator and data from 2012 to 2019 across all 63 provinces/cities of Vietnam.
Findings
The study finds that local budget retention rates significantly influence public investment, affecting scale and allocation efficiency. The reallocation of budgets between regions and from the central government to local levels incurs certain costs, often resulting in economically robust provinces experiencing reductions in their retention rates.
Practical implications
Recognizing the challenges of immediate structural budget changes due to cultural and historical factors, the study suggests a more gradual policy approach. It emphasizes the importance of policy predictability, as abrupt reductions in the retention rate lead to higher costs than gradual reductions, thus implementing budget policies with a clearer timeline. This study provides insight into local budget allocation regimes and their impact on productivity in transitioning countries.
Originality/value
First, the study provides fresh evidence of the impact of retention rate changes on TFP and its components in Vietnam. Second, the study provides insights into the mechanisms of the nexus of increased budget spending, capital efficiency and, most importantly, attaining improvement in education. We also offer further insights into inefficient budget allocation agents in Vietnam, especially in large cities, which should alert scholars to explore this topic further in the future.
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Tan Vo-Thanh, Mustafeed Zaman, Rajibul Hasan, Shahriar Akter and Thac Dang-Van
This study aims to examine the perceived value of service digitalization in fine-dining restaurants in France. No study exists on this topic, and its aim is to address this…
Abstract
Purpose
This study aims to examine the perceived value of service digitalization in fine-dining restaurants in France. No study exists on this topic, and its aim is to address this research gap. To do so, a conceptual framework of the perceived benefits and costs of the service digitalization was developed. This study also provides actionable recommendations for fine-dining restaurant managers to create and manage an optimized fine-dining experience for their customers.
Design/methodology/approach
To obtain in-depth information, the authors opted for a qualitative research approach. The authors interviewed 24 fine-dining restaurant managers (listed in the Michelin Guide) and 29 customers of fine-dining restaurants using a video titled “The Restaurant of the Future.”
Findings
The findings underline the perceived benefits and costs of service digitalization for both restaurant managers and their customers. This study highlights that fine-dining restaurants are highly experience-centric compared to other types of restaurants and recommends which services should be digitalized and which should not be to create and manage experiences throughout the customer journey.
Practical implications
This research provides restaurants with actionable recommendations in terms of service digitalization to enhance customers’ fine-dining experiences.
Originality/value
This research fills a gap by proposing a conceptual framework to examine the digitalization of services in fine-dining restaurants.
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Cong Doanh Duong, Thanh Hieu Nguyen, Thi Viet Nga Ngo, Van Thanh Dao, Ngoc Diep Do and Thanh Van Pham
The advent of artificial intelligence technologies, exemplified by platforms such as ChatGPT, has created a profound global impact, with a particular resonance in education. This…
Abstract
Purpose
The advent of artificial intelligence technologies, exemplified by platforms such as ChatGPT, has created a profound global impact, with a particular resonance in education. This research aims to integrate the information systems success (ISS) model with the stimulus-organism-response (SOR) paradigm to explore how information quality and service quality individually, jointly, congruently, and incongruently affect higher education students’ trust in ChatGPT, satisfaction, and continuance usage intention.
Design/methodology/approach
We employed a sophisticated methodology - polynomial regression with response surface analysis - and conducted our study with a sample of 468 higher education students selected in Vietnam using a three-phase stratified random sampling approach to evaluate the hypotheses developed.
Findings
The findings indicate that both information and service quality influence higher education students’ trust directly and positively in ChatGPT, satisfaction, and continuance usage intention. Moreover, a balance between information quality and service quality can increase students’ level of trust in ChatGPT, satisfaction, and intention to continue using it. Nevertheless, a significant incongruity between information quality and service quality will likely reduce trust in ChatGPT, satisfaction, and the intention to continue using the service.
Originality/value
This research is one of the first to offer a shred of empirical evidence about how information quality and service quality interact congruently and incongruently with each other to trigger higher education students’ trust in ChatGPT, satisfaction, and continuance usage intention of ChatGPT. It thus offers valuable insights for leveraging the benefits and mitigating potential challenges associated with adopting this innovative technology in educational settings.
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Tan Vo-Thanh, Huan Minh Nguyen, Triet Minh Nguyen, Danh Cong Pham and Hung Phuc Nguyen
This study aims to examine the relationships among fear of COVID-19, job stress, job commitment and intention to quit. It also investigates the boundary conditions of the impact…
Abstract
Purpose
This study aims to examine the relationships among fear of COVID-19, job stress, job commitment and intention to quit. It also investigates the boundary conditions of the impact of fear of COVID-19 on job stress and intention to quit, a research gap that has not been addressed yet.
Design/methodology/approach
This research focused on full-time frontline hotel employees who have been working in four- and five-star hotels in Ho Chi Minh City, Vietnam. A pilot test was performed before collecting formal data. The survey was conducted face-to-face on site so that any potential confusion could be clarified right away. 487 valid responses were analyzed using SPSS 28 and SmartPLS 4.
Findings
The majority of hypotheses were supported, with the results suggested that supervisor support contributes to reducing the tendency of hotel employees to quit their job and their job stress. Besides, government support is necessary to make staff feel secure during the pandemic.
Practical implications
This study contributes to pointing out central priorities in making decisions by hotel managers when facing crises. Managers need to focus more on measures to help their employees feel secure and should be available for guidance and feedback when nedeed. Additionally, supportive policies from the government, especially financial support, can provide hotel employees with resources they need to maintain a basic level of living in the face of a severe drop in their income. The study provides the hotel industry not only in Vietnam but also in countries with comparable settings with strategies to cope with unexpected events.
Originality/value
Research on intention to quit a job has mainly focused on a complex interplay of internal factors. However, the influence of fear of COVID-19 on intention to quit a job has not been studied in the context of Vietnamese hotel industry yet. During the COVID-19 pandemic, a number of hotels in Vietnam had to close due to a lack of visitors, which had a negative impact on human resources. Accordingly, fear, stress, commitment and intention to quit a job are the issues faced by staff.
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Pham Tien Thanh and Le Thanh Tung
During the COVID-19 pandemic, it has raised an important question of whether government efforts (GEFs), especially communication work, could prevent the outbreak of this pandemic…
Abstract
Purpose
During the COVID-19 pandemic, it has raised an important question of whether government efforts (GEFs), especially communication work, could prevent the outbreak of this pandemic by enhancing public trust and public compliance with the government. This research answers this question by focusing on the case of Vietnam, a low-resource country that gained some achievements during the first pandemic year 2020. In particular, this study aims to investigate the relationship between GEF, public trust and public compliance during the country’s first nationwide social distancing.
Design/methodology/approach
The structural equation modelling is used to analyse data collected from 467 respondents in Vietnam during the nationwide social distancing in 2020.
Findings
Perceived GEF is positively associated with public compliance with the government directly and indirectly through the mediating role of public trust in government (PTG). The empirical results also reveal the effectiveness of government communication work, one among the government’s great efforts, during the COVID-19 pandemic, in terms of intensity and diversity in communication and information channels.
Practical implications
During a pandemic, the governments must enhance public compliance with public health measures to implement the anti-epidemic missions effectively. Therefore, it is important to raise public perception of GEF and PTG. The study’s findings highlight that governments in developing countries should implement relevant responses and policies for the ongoing COVID-19 pandemic and future public health crises, especially in the context that effective vaccines are unavailable or insufficient.
Originality/value
To the best of the authors’ knowledge, this research is among the first attempts that examine the role of GEF, especially public health communication work, in raising public compliance directly and indirectly through the mediating role of public trust. The study carries some important messages for containing a public health crisis like the COVID-19 pandemic.
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Dinh Van Hoang and Le Thanh Tung
Consumer green behavior is a spotlight topic in both theoretical and practical business environments. This study aims to investigate the primary drivers of green intention…
Abstract
Purpose
Consumer green behavior is a spotlight topic in both theoretical and practical business environments. This study aims to investigate the primary drivers of green intention behaviors among Generation Z customers by integrating the Social Cognitive Theory and the Theory of Planned Behavior. Additionally, perceived environmental responsibility serves as a moderating factor.
Design/methodology/approach
The study polled 283 Generation Z people who have purchased green products in Vietnam. Using the PLS_SEM model, we employ mediation and moderation analysis to investigate and evaluate the hypotheses.
Findings
Our findings reveal that both environmental concern and perceived marketplace influence have direct effects on attitudes toward green products as well as indirect effect on green purchase intention. Unlike previous studies, perceived environmental responsibility behaves as a moderated factor, driving the relationship between consumers' attitudes and green purchase intentions.
Practical implications
The outcomes of this study provide helpful implications for managers in improving green products based on the green purchase behavior of young customers.
Originality/value
By merging the Social Cognitive Theory and the Theory of Planned Behavior to analyze the antecedent variables of attitude and intention, this study contributes to the pro-environmental literature. It explains the underlying mediation processes of organisms and behavioral reactions, emphasizing the role of perceived environmental responsibility in regulating these frameworks. The results are critical in promoting green production and consumption in communities.