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Article
Publication date: 26 June 2024

Tuan 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

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

Keywords

Open Access
Article
Publication date: 27 November 2020

Huong Thi Lan Huynh, Lieu Nguyen Thi and Nguyen Dinh Hoang

This study aims to evaluate the impact of climate change on some specific areas of agricultural production in Quang Nam Province, including assessing the possibility of losing…

4589

Abstract

Purpose

This study aims to evaluate the impact of climate change on some specific areas of agricultural production in Quang Nam Province, including assessing the possibility of losing agricultural land owing to sea level rise; assessing the impact on rice productivity; and, assessing the impact on crop water demand.

Design/methodology/approach

This study used the method of collecting and processing statistics data; method of analysis, comparison and evaluation; method of geographic information system; method of using mathematical model; and method of professional solution, to assess the impacts of climate change.

Findings

Evaluation results in Quang Nam Province show that, by the end of the 21st century, winter–spring rice productivity may decrease by 33%, while summer–autumn rice productivity may decrease by 49%. Under representative concentration pathway (RCP) 4.5 scenario, water demand increases by 31.1% compared to the baseline period, of which the winter–spring crop increases by 28.4%, and the summer–autumn crop increased by 34.3%. Under RCP 8.5 scenario, water demand increases by 54.1% compared to the baseline period, of which the winter–spring crop increases by 46.7%, and the summer–autumn crop increased by 63.1%. The area of agricultural land likely to be inundated by sea level rise at 50 cm is 418.32 ha, and at 80 cm, it is 637.07 ha.

Originality/value

To propose adaptation solution to avoid the impacts of climate change on agriculture, it is necessary to consider about the impact on losing land for agriculture, the impact on rice productivity, assess the impact on crop water demand and other. The result of this assessment is useful for policymakers for forming the agriculture development plan.

Details

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

Keywords

Article
Publication date: 26 January 2024

Thi Ngan Pham, Minh Tu Tran Hoang, Yen Ngan Nguyen Tran and Binh An Nguyen Phan

This study aims to comprehensively assess how digital maturity degree (DMD) impacts sustainable supply chain management (SSCM) performance through the mediating role of SSCM…

Abstract

Purpose

This study aims to comprehensively assess how digital maturity degree (DMD) impacts sustainable supply chain management (SSCM) performance through the mediating role of SSCM practices in businesses in Vietnam.

Design/methodology/approach

The hypotheses were performed using partial least square-structural equation modeling (PLS-SEM) with data collected from a survey of over 234 managers having responsibility in the supply chain field in Vietnam. Qualitative data were collected through semistructured interviews with 6 experts to deepen understanding of the relationship between DMD and SSCM.

Findings

The results show the mix-results in the relationship between SSCM practices and SSCM performance dimensions while DMD strongly impacts SSCM practices. Also, this study finds the mediating role of SSCM practices on the relationship between DMD and SSCM performance.

Originality/value

This is the first study to investigate the role of DMD on SSCM practices and SSCM performance, using empirical evidence. Moreover, the authors integrate both qualitative and quantitative for understanding complex SSCM phenomena. The present study also helps businesses improve their SSCM performance by leveraging SSCM practices and developing their digital technologies in the long-term view.

Details

International Journal of Productivity and Performance Management, vol. 73 no. 8
Type: Research Article
ISSN: 1741-0401

Keywords

Case study
Publication date: 20 September 2018

Sang Kim Tran and Le Ngoc Hoang Yen

Decision-making seems simple, but, in reality, it is not an easy task to decide the cause for its profound result or consequence, leading to inevitable failures. Therefore, a…

Abstract

Subject area

Decision-making seems simple, but, in reality, it is not an easy task to decide the cause for its profound result or consequence, leading to inevitable failures. Therefore, a leader must recognize whether there is something incorrect so as to avoid bad results. A good leader is a person who carefully reviews and analyzes aspects of a problem, knows the strengths and weaknesses of his organization and evaluates what the advantages or risks are. It cannot be denied that the appropriate options will reap many benefits to the business. For such important things, this paper will discuss the dilemma of Viettire, a tire distributor company in Vietnam. Accordingly, its CEO was worried about what strategic option he should adopt to approach the Myanmar market while ensuring a strategic fit to its company’s resources and capabilities and also to the overall market demands of the tire industry environment in both countries. However, with different ideas, the expansion strategies in this new market become controversial. The General Director and Founder of Viettire were wondering how Viettire could expand its existing business into Myanmar. To expand the company to new emerging market in Myanmar, Hoang Nguyen – CEO of Viettire – had conducted a strategic analysis of external environment factors to define the opportunities and threats when doing business in Myanmar by using Porter’s five forces model, S.W.O.T and competitive advantages analysis. The results indicated that Myanmar’s business environment is highly risky for foreign investors because of uncertain political, economic, social reforms in the process. Among three options, namely, exporting, licensing and wholly owned, however, Option 2 is illustrated as the best strategy for its dilemma.

Study level/applicability

Postgraduate/Graduate Business level.

Case overview

As for a market mechanism, what produces, how and for whom, is not the business’s demand but the consumer’s demand. The business sells only what the market needs, not what it has. In the period of increasingly competitive conditions, stabilizing and expanding markets are a prerequisite for survival. If stability is seen as a “defensive” way, expansion is a “defensive attack” like trying to hold on the “pie” that the market gives to itself. This strategic action is to strengthen regular, close relationships with existing customers and establish new customers. As a result, the potential market is transformed into a target market. Hence, decision-making of which market, which method is the issue that a leader has to think the choice to avoid risks. Mr Hung, Viettire’s co-owner, suggests that Myanmar should be taken into account as a company’s new entry, thus exploring this potential market to increase the company’s growth and profitability. In the progress, Viettire’s marketing team had been doing a thorough tire market investigation in Myanmar. It was concluded that this emerging country, especially Yangon City, was the most suitable for those who were willing to embark on an overseas investment expansion. They believe this was a good opportunity to gain market share compared with other entrants and competitive rivals; if Viettire hesitated to invest, others definitely had jumped in with a first-mover advantage. However, the CEO, Mr Hoang, was worried about what strategic option he should adopt to approach this new market while ensuring a strategic fit to its company’s resources and capabilities and also to the overall market demands of the tire industry environment in both countries.

Expected learning outcomes

Understand the basic decisions that firms contemplating foreign expansion must make: which markets to enter, when to enter those markets and at what scale. Recognize the current strategic decisions an organization is facing: positioning, portfolio and market expansion approach. Learn how to develop an effective strategic plan. Be familiar with different strategies for competing globally and their pros and cons. Evaluate various strategic options and decisions in accordance with a company’s resources and capabilities.

Supplementary materials

Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.

Subject Code

CSS 11: Strategy.

Details

Emerald Emerging Markets Case Studies, vol. 8 no. 3
Type: Case Study
ISSN: 2045-0621

Keywords

Article
Publication date: 16 January 2024

Long Nguyen Phi, Dung Hoang Phuong and Thong Vu Huy

This paper seeks to revisit the interrelationship among tourists’ perceived value of the destination, tourist satisfaction and destination loyalty in the heritage tourism site of…

Abstract

Purpose

This paper seeks to revisit the interrelationship among tourists’ perceived value of the destination, tourist satisfaction and destination loyalty in the heritage tourism site of Hoi An. In addition, the moderating role of tourists’ perceived crowding, which has become remarkably common at the site, in such a triangle relationship will also be explored. In other words, this study aims to validate an extended model of perceived value – tourist satisfaction – destination loyalty – perceived crowding.

Design/methodology/approach

The study collects data from 403 tourists who visited Hoi An during peak season through an online questionnaire. The data were later analysed using AMOS and Warp partial least squares.

Findings

The results validate the significant and positive correlation among perceived value, customer satisfaction and destination loyalty. Also, perceived crowding was confirmed to affect the relationship among these three variables negatively. In terms of academic contributions, this paper empirically proved that low levels of tourist satisfaction and destination loyalty among tourists who highly value their visiting experience at World Heritage Sites (WHS) can be caused by perceived crowding.

Originality/value

So far, current literature has investigated the direct (either positive or negative) relationship between perceived crowding and post-visit behaviours of tourists (Nie et al., 2022; Papadopoulou, Ribeiro, & Prayag, 2023; Stemmer, Gjerald, & Øgaard, 2022). Broadening this area of research, the authors of this paper used the social interference theory and the stimulus-overload theory to explain the low level of tourist satisfaction and destination loyalty among tourists who highly value their visiting experience at WHS.

Details

International Journal of Tourism Cities, vol. 10 no. 1
Type: Research Article
ISSN: 2056-5607

Keywords

Article
Publication date: 1 May 2007

Hoang Vinh Hung, Rajib Shaw and Masami Kobayashi

This paper aims to investigate reasons for unusual overdevelopment of floodplain areas outside river dyke, provide an insight into the importance of community perception of…

2057

Abstract

Purpose

This paper aims to investigate reasons for unusual overdevelopment of floodplain areas outside river dyke, provide an insight into the importance of community perception of catastrophic flood risk in the riverside urban areas (RUA) of Hanoi and establishes the need for participatory disaster management planning and disaster management education in the study location.

Design/methodology/approach

Structured survey was conducted in five wards in the RUA to understand how residents perceived flood risk.

Findings

The low perception of catastrophic flood risk among communities was found to be an important factor in the continued development of the RUA and led to the trust in their houses as a prominent protective solution. Moreover, the flood vulnerability of the areas has been increasing due to the missing link between local authorities and community.

Research limitations/implications

This paper examines community perception of flood risk as one of main factors. Other factors such as availability of options for housing, public participation and relevant policy interventions are beyond the scope of the paper and need to be studied in the same location.

Practical implications

To regulate the development of the RUA, community perception of catastrophic flood risk should be changed and community leaders should be motivated, with involvement of local authority at ward offices, to conduct comprehensive hands‐on community education programs.

Originality/value

Few researches have been done on the overdevelopment and community perception in the flood‐prone areas. This paper not only reaffirms the few studies made in the past but also suggests broad interventions for enhancing the flood risk perception among the community members.

Details

Disaster Prevention and Management: An International Journal, vol. 16 no. 2
Type: Research Article
ISSN: 0965-3562

Keywords

Book part
Publication date: 18 December 2009

Hoang Hung, Masami Kobayashi and Rajib Shaw

Located at the center of the Red River Delta, Hanoi is the consequence of the unstable balance between soil and water and has witnessed the amicable and adverse relationship…

Abstract

Located at the center of the Red River Delta, Hanoi is the consequence of the unstable balance between soil and water and has witnessed the amicable and adverse relationship between the two elements over a long history. Established as a small town in A.D. 210, Hanoi grew from a harbor on the bank of the Red River to a thriving city and was chosen to be the capital of Vietnam in 1010 as the site had advantageous physical, landscape, and geomancy characteristics. However, the capital had also been confronted with difficulties due to the alluvial process, which raises the level of the watercourse above its normal elevation forcing the inhabitants to take measures such as building a dyke to prevent floods. This chapter analyzes the natural and social conditions as well as several problems that have been affecting urban flood risk management in Hanoi. The chapter ends with practical options and policy measures to address the problems.

Details

Urban Risk Reduction: An Asian Perspective
Type: Book
ISBN: 978-1-84855-907-3

Article
Publication date: 8 February 2021

Yen Thi Tran, Nguyen Phong Nguyen and Trang Cam Hoang

By drawing on the institutional theory and contingency theory, this study aims to examine the effects of leadership and accounting capacity on the quality of financial reporting…

1533

Abstract

Purpose

By drawing on the institutional theory and contingency theory, this study aims to examine the effects of leadership and accounting capacity on the quality of financial reporting and accountability of public organisations in Vietnam. Furthermore, this paper is to determine the impact of financial reporting quality on accountability.

Design/methodology/approach

The research model and hypotheses have been tested by partial least squares structural equation modeling, with 177 survey samples obtained from accountants and managers working in the public sector in Vietnam.

Findings

The research results indicate that leadership and accounting capacity have a positive effect on financial reporting quality; leadership and accounting capacity positively influence accountability; and the quality of financial reporting has a positive impact on accountability.

Research limitations/implications

The research results provide empirical evidence of the direct impact of leadership and accounting capacity on financial reporting quality and accountability of public organisations in a developing country. Moreover, the current work also provides important evidence for the impact of financial reporting quality on accountability.

Practical implications

Public sector organisations must realise that leadership and accounting capacity play a vital role in the accounting reform process. Public institutions likewise need to pay attention to develop accounting capacity and promote leadership. Moreover, the results respond to the continuing call for increased citizen trust in public organisations.

Originality/value

To the best of the authors’ knowledge, this study is the first to examine the chain from leadership, accounting capacity, financial reporting quality and accountability in the context of public sector organisations in an Asian transition market.

Details

Journal of Asia Business Studies, vol. 15 no. 3
Type: Research Article
ISSN: 1558-7894

Keywords

Book part
Publication date: 18 November 2020

Anh Ngoc Cao and Tanya Wyatt

Unsustainable logging and illegal logging for domestic and international trade and trafficking continue to lead to deforestation. It is crucial that Sustainable Development Goal…

Abstract

Unsustainable logging and illegal logging for domestic and international trade and trafficking continue to lead to deforestation. It is crucial that Sustainable Development Goal 15 ‘Sustainably manage forests, combat desertification, halt and reverse land degradation, halt biodiversity loss’ is achieved to maintain the livelihoods of people and protect the planet. This is the case in Vietnam as well, where many people, including indigenous groups, rely on the forest for their survival. Drawing on semistructured interviews in Vietnam and a literature review, we investigate how the abuse of forest policies leads to human insecurity. From this, we propose solutions to (1) end unsustainable harvesting and illegal logging (SDG 15.7), (2) integrate the value of forests (culturally and economically) into national and local planning, the development process and poverty elimination strategies (SDG 15.9) and (3) improve the use of forest protection funding provided by international donors.

Details

The Emerald Handbook of Crime, Justice and Sustainable Development
Type: Book
ISBN: 978-1-78769-355-5

Keywords

Book part
Publication date: 26 November 2024

Le-Nguyen Duc Chinh and Martin Hayden

Vietnam is firmly committed to attaining the Sustainable Development Goals articulated in the United Nations 2030 Sustainable Development Agenda. Goal 4 concerns quality…

Abstract

Vietnam is firmly committed to attaining the Sustainable Development Goals articulated in the United Nations 2030 Sustainable Development Agenda. Goal 4 concerns quality education, and target 4.3 refers to ensuring access by all men and women to quality and affordable technical, vocational and tertiary education, including university education. In 2017, the Prime Minister issued a directive that included five actions to be taken by Vietnam’s Ministry of Education and Training to achieve target 4.3 in the context of the higher education sector. This chapter provides an opportunity to review some challenges the Ministry faces in implementing the five actions specified.

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