Search results
1 – 10 of 25Tuan Anh Nguyen, Thi Thu Huong Tran and Thang Binh Hoang
This paper aims to design a PD controller for an active suspension system to improve the car’s moving smoothness.
Abstract
Purpose
This paper aims to design a PD controller for an active suspension system to improve the car’s moving smoothness.
Design/methodology/approach
The controller parameters are optimized by an in-loop genetic algorithm (iL-GA). Unlike previous studies that only used conventional GAs to tune coefficients for the controller, the iL-GA designed in this paper provides outstanding efficiency when determining the optimal value range for the system. The optimal value range of parameters is determined by the in-loop algorithm based on criteria related to systematic errors. The optimal values are then calculated by the GA based on this range instead of an uncertain one.
Findings
Simulation results show that vehicle body acceleration and displacement values are significantly reduced when using the active suspension system compared to the conventional passive suspension system. The phase difference phenomenon does not occur in the iL-GA situation. In addition, the frequency domain investigation also shows the system’s stability when using iL-GA instead of conventional GA.
Originality/value
To the best of the authors’ knowledge, this is a new application that provides positive effects to the suspension controller. This algorithm can be applied to tune coefficients for direct controllers in the future.
Details
Keywords
Van Hoa Tran, Trong Nghia Vu, Huong Thao Pham, Thi Phuong Thu Nguyen and Cong Doanh Duong
The purpose of this paper is to adopt the theory of planned behavior to close the entrepreneurial attitude–intention–behavior gap in the entrepreneurship field as well as test the…
Abstract
Purpose
The purpose of this paper is to adopt the theory of planned behavior to close the entrepreneurial attitude–intention–behavior gap in the entrepreneurship field as well as test the key moderators of the entrepreneurial process, starting from entrepreneurial attitude and intention to behavior to engage in entrepreneurial activities – namely, entrepreneurship education.
Design/methodology/approach
The research used a sample of 2,566 students from 16 universities in Vietnam. First, Cronbach’s alpha and confirmatory factor analysis have been used to test the reliability and validity of scales. Then the coefficient paths in the conceptual framework were tested through structural equation modeling, and indirect associations were estimated via the PROCESS bootstrapping approach.
Findings
The research illustrated that both attitudes toward entrepreneurship and entrepreneurial intention serve as the central antecedents in the formation of entrepreneurial behavior. Also, when students are more entrepreneurially educated, the linkage between attitude toward entrepreneurship and entrepreneurial behavior was hypothesized to become stronger, yet the relation between entrepreneurial intention and behavior was weakened.
Practical implications
This research suggests useful recommendations for educators and policymakers to encourage university students’ favorable attitudes toward entrepreneurial activities, their intention to engage in them and their subsequent entrepreneurial behavior.
Originality/value
This research is expected to make a significant contribution to the entrepreneurship literature by closing the entrepreneurial attitude–intention–behavior gap as well as enriching our understanding of the influence of entrepreneurship education on the entrepreneurial process. Importantly, this research reveals that entrepreneurial education significantly moderates the effects of attitude toward entrepreneurship and entrepreneurial intention on entrepreneurial behavior.
Details
Keywords
Phong Ba Le, Dat Tho Tran, Huong Tran Lan and Huong Thi Lan Tran
Given the importance of identifying the antecedents of innovation for firms to follow and achieve it, the purpose of this paper is to investigate the effect of inclusive…
Abstract
Purpose
Given the importance of identifying the antecedents of innovation for firms to follow and achieve it, the purpose of this paper is to investigate the effect of inclusive leadership (IL) and knowledge sharing (KS) on ambidextrous innovation capabilities, namely exploratory and exploitative innovation. It also explores the possible moderating role of environmental uncertainty in the relationship between KS and ambidextrous innovation.
Design/methodology/approach
This study used structural equation modeling (SEM) to examine the relationship among latent factors in the proposed research model based on the data gathered from 118 manufacturing and service firms.
Findings
The empirical findings support the significant and positive impact of IL on exploratory and exploitative innovation through the mediating role of KS. It highlights the moderating mechanism of environmental uncertainty in fostering the relationship between KS and ambidextrous innovation.
Research limitations/implications
To gain a deeper understanding of the benefits and important role of knowledge resources, future research should investigate the potential role of IL practices in creating a KS culture for promoting specific forms of innovation such as open innovation or frugal innovation.
Practical implications
The paper provides a valuable understanding and novel approach for managers and directors of firms in developing and emerging countries to improve ambidextrous innovation by practicing IL for fostering KS in organizations.
Originality/value
The paper is unique in its attempts to bridge the research gaps in the literature and provide deeper insights on the mediating role of KS and the moderating effect of environmental uncertainty in pursuing both exploratory and exploitative innovation.
Details
Keywords
Le Trinh Hai, Nguyen An Thinh, Tran Anh Tuan, Dao Dinh Cham, Luu The Anh, Hoang Luu Thu Thuy, Nguyen Manh Ha, Tran Quoc Bao, Le Van Huong, Uong Dinh Khanh, Bui Thi Mai, Tong Phuc Tuan, Hoang Hai and Quang Hai Truong
This paper aims to facilitate the joint assessment of issues related to the agricultural systems, i.e. agriculture, aquaculture and climate change (CC) response strategies, in the…
Abstract
Purpose
This paper aims to facilitate the joint assessment of issues related to the agricultural systems, i.e. agriculture, aquaculture and climate change (CC) response strategies, in the coastal districts with a panel of stakeholders; and to evaluate the level of agreement on the topics under consideration and potentially identify the most promising approaches to assessing CC affecting agricultural systems in the area and identify relevant and adequate response strategies.
Design/methodology/approach
Stakeholder Delphi technique – its assessment is an interactive method of qualitative research used to facilitate the interactive participation of varied and conceivably hierarchical and antagonistic stakeholder groups.
Findings
The most important result for the province is that the impact of climate change on agro-ecological landscapes (poverty and near river areas) is the duration of cold weather, more frequent and extreme. Moreover, Kendall’s W test gave a score of 0.547, which indicates a “strong” stakeholder agreement and the “confidence in ranks” being “high” in Thai Binh (Vietnam).
Originality/value
The scientific results in this study are intended to serve as relevant knowledge-inputs and direct contributions to capacity-building for the local partners (stakeholders and local authorities). These local partners are engaged in policy-making and effective planning and implementation of climate response measures in the districts in the province of Thai Binh.
Details
Keywords
Tien Thi Hanh Ho and Ly Thi Tran
Vietnam’s 11th National Party Congress prioritised integration, modernisation and industrialisation as the new key orientations for Vietnam. It outlined Vietnam’s integration with…
Abstract
Purpose
Vietnam’s 11th National Party Congress prioritised integration, modernisation and industrialisation as the new key orientations for Vietnam. It outlined Vietnam’s integration with the world, not only economically, but also in terms of the social, cultural, educational, scientific and technological areas that can support social and economic development and sustainability. Vocational education has been recognised as pivotal to the nation’s sustainable workforce development and transformational changes. The purpose of this paper is to analyse how foreign approaches and practices have been filtered and appropriated to bring about sustainable development and transformational changes for Vietnamese vocational education.
Design/methodology/approach
The paper is derived from a study that involves documentary analysis, observation and semi-structured interviews with vocational learners and staff across three different vocational education and training (VET) sites in Vietnam. The overall study includes three vocational education providers and 22 participants altogether, but this paper involves observation and semi-structured interviews with eight participants, including one leader, two teachers and five students. It focusses on a Germany-funded vocational college in the northern central area of Vietnam that came under the management of the Ministry of Labour, Invalids and Social Affairs, and the local province where the college located.
Findings
The findings of the study show a critical need to develop a new “Vietnamese VET pedagogy” that filters international influences and flexibly and creatively combines them with the existing local pedagogy. To meet the local and global demands and bring transnational changes for Vietnamese vocational education, new VET pedagogies need to align with both Vietnamese historical and political situations, especially the emergent demands of the open market socialist economy and to capitalise on international influences – Confucian, French, Soviet and Western. Such a balance will ensure Vietnam makes use of both international forces and local strengths for sustainable development and transformational changes rather than passive dependence on foreign practices.
Research limitations/implications
The research provides valuable insights into the appropriation of foreign practices and principles in Vietnamese vocational education. However, it focusses only on three vocational education sites in central Vietnam. Further studies with larger scale of participants and across a variety of vocational education settings including public and private institutions, community centres and family workshops will offer broader findings related to this important topic.
Practical implications
The study suggests practical implications for institutions to deal with the challenges associated with the adaptation of international forces into the vocational education context in Vietnam. It outlines the transformational changes in pedagogical practices related to the increased requirement to move from the traditional didactic teaching to more self-directed learning, to meet the requirements of a modern vocational education system.
Originality/value
This study provides unique insights into the practices and challenges of filtering foreign VET practices and principles to bring about transformational changes in Vietnamese vocational education. It, therefore, responds to the paucity of literature in this area. In addition, it examines internationalisation in Vietnamese VET, an under-researched area in the field of internationalisation of education as most of the literature in this field concentrates on the higher education sector.
Details
Keywords
Hoang-Long Cao, Huynh Anh Duy Nguyen, Trong Hieu Luu, Huong Thi Thu Vu, Diep Pham, Van Thi Ngoc Vu, Hoang Hai Le, Duy Xuan Bach Nguyen, Trong Toai Truong, Hoang-Dung Nguyen and Chi-Ngon Nguyen
COVID-19 hits every country’s health-care system and economy. There is a trend toward using automation technology in response to the COVID-19 crisis not only in developed…
Abstract
Purpose
COVID-19 hits every country’s health-care system and economy. There is a trend toward using automation technology in response to the COVID-19 crisis not only in developed countries but also in those with lower levels of technology development. However, current studies mainly focus on the world level, and only a few ones report deployments at the country level. The purpose of this paper is to investigate the use of automation solutions in Vietnam with locally available materials mainly in the first wave from January to July 2020.
Design/methodology/approach
The authors collected COVID-related automation solutions during the first wave of COVID-19 in Vietnam from January to July 2020 through a search process. The analysis and insights of a panel consisting of various disciplines (i.e. academia, health care, government, entrepreneur and media) aim at providing a clear picture of how and to what extent these solutions have been deployed.
Findings
The authors found seven groups of solutions from low to high research and development (R&D) levels deployed across the country with various funding sources. Low R&D solutions were widely spread owing to simplicity and affordability. High R&D solutions were mainly deployed in big cities. Most of the solutions were deployed during the first phases when international supply chains were limited with a significant contribution of the media. Higher R&D solutions have opportunities to be deployed in the reopening phase. However, challenges can be listed as limited interdisciplinary research teams, market demand, the local supporting industry, end-user validation and social-ethical issues.
Originality/value
To the authors’ best knowledge, this is the first study analyzing the use of automation technology in response to COVID-19 in Vietnam and also in a country in Southeast Asia. Lessons learned from these current deployments are useful for future emerging infectious diseases. The reality of Vietnam’s automation solutions in response to COVID-19 might be a reference for other developing countries with similar social-economic circumstances and contributes to the global picture of how different countries adopt technology to combat COVID-19.
Details
Keywords
Phuong-Thao Pham and Thi Thu Huong Le
This paper investigates the key determinants affecting household spending for university degree in Vietnam. This paper serves as empirical evidence for policymakers to select…
Abstract
Purpose
This paper investigates the key determinants affecting household spending for university degree in Vietnam. This paper serves as empirical evidence for policymakers to select appropriate factors to estimate financial needs for university students in Vietnam.
Design/methodology/approach
We employ an innovative variable selection approach with adaptive LASSO for Tobit Regression Model.
Findings
The results suggest income, region and ethnicity play significant roles in determining higher education expenditure at Vietnamese households. Gender-related indicators (such as gender of household head, student’s gender), distance to school, occupations, etc. are empirically insignificant.
Originality/value
This study proposes a data-driven method by interfering regulation and Tobit regression to understand the divergence in higher education spending. Especially, adaptive LASSO was first introduced to identify key determinants of higher education expenditure at household level in Vietnam. It hopes to tackle over-fitting problems of traditional OLS regression in previous literature.
Details
Keywords
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.
Details
Keywords
Huynh Thi Lan Huong and Luong Huu Dzung
Determining alarm levels of river floods is considered an effective non-structural measure to prevent and mitigate the damages of flood and inundation. This study aims to propose…
Abstract
Purpose
Determining alarm levels of river floods is considered an effective non-structural measure to prevent and mitigate the damages of flood and inundation. This study aims to propose a holistic approach, a comprehensive review of the factors affecting flooding and flood risk, based on which the water level (WL) is proposed for the flood alarm levels. The corresponding proposed WL to the necessary flood alarm levels is based on observed data, as well as simulated data from statistical methods and hydrological and hydraulic models.
Design/methodology/approach
In this paper, the proposed criteria to delineate WLs corresponding to flood alarm levels include flood magnitude; flood derivation and flood duration; flood risks and damage; correlation with neighboring stations; flood characteristics and local characteristics; and other criteria (flood prevention strategy and flood experience).
Findings
The paper proposed a synthesis approach to determine flood warning levels in Vietnam. The retrieved levels are the basics to revise the Decision 632/2010 of the Vietnam Government on determining water alarm levels for flood prevention. The study proposes a new flood alarm system including revised flood levels at 115 existing stations and new flood levels at 30 additional stations. The proposed flood warning level can help manage the flooding problem in major river systems that supports flood protection and prevention services in Vietnam.
Originality/value
The paper proposed a novel synthesis approach to flood prevention in Vietnam.
Details
Keywords
Hanh Minh Thai, Giang Nguyen Thuc Huong, Trinh Trong Nguyen, Hien Thu Pham, Huyen Thi Khanh Nguyen and Trang Huyen Vu
Climate change increases systematic risk for firms, especially those in the agricultural industry. Therefore, the need to examine the consequences of climate-related risks on…
Abstract
Purpose
Climate change increases systematic risk for firms, especially those in the agricultural industry. Therefore, the need to examine the consequences of climate-related risks on agribusiness companies' financial performance across the globe and emerging markets has risen. In this context, the paper aims to investigate the effects of climate change risks on the financial performance of agriculture listed firms in Vietnam.
Design/methodology/approach
The study sample includes 77 Vietnamese listed firms in the agricultural industry in the period of 2015–2019. The authors chose temperature, wind, rainfall and humidity proxies to measure climate change. The OLS regression, random regression and sub-sample analysis have been used to examine the impacts of climate risks on firms' financial performance.
Findings
Empirical results show that rain and temperature have positive impacts on financial performance of Vietnamese agriculture listed firms, while wind and humidity have insignificant impacts on financial performance.
Research limitations/implications
The research helps researchers, businesses, practitioners and policymakers interested in the agricultural industry, especially those in developing and emerging countries, to develop a deep understanding of the impact of climate change risks on firm performance and therefrom prepare necessary measures to reduce the negative impacts.
Originality/value
This study adds to the literature stream on the impacts of climate change on financial performance. It is the first study to investigate this impact in Vietnam, a country which depends mainly on agriculture.
Details