Projects In Vietnam Research Articles

Effect of rice husk ash on hydrotechnical concrete behavior

Vietnam is one of the leading rice exporters in the world. Popularly, as other rice producing countries, rice husks from rice processing in this nation are used widely not only in electricity generation and silicon making but also one kind of raw material for various building materials production. This article presents a reusing waste method of Rice Husk Ash (RHA) in Vietnam to improve the behavior of hydrotechnical concrete (HTC), one of the most significant building materials.In this study, RHA plays a role as a highly active fine mineral additives, containing 88.42% amorphous SiO2 oxide in component. The combination of RHA and superplasticizer ACE 388 as mineral additives is able to modify the concrete structure. Not only the compressive strength of hydrotechnical concrete at the age of 28 days increase 7.39% (from 11.71 to 19.1%), but also its water resistance rises up to 50% (from the point of 25%) due to compaction of the structure.The experimental results of permeability of chloride-ion according to standard ASTM C1202-97 (American) show that the HTC patterns containing 10% and 20% RHA by mass of the binder have the average value of electrical energy, respectively 351.18 C and 297 C. While other control samples without RHA have the average value of electrical energy of 1013.22 C. In comparison to the American Concrete Association classification table, these chlorine-ion permeability values of samples HTC-10 and HTC-20 are, precisely, at low level. Therefore, hydraulic concrete, using modified structure from mineral additives of superplasticizer ACE 388 and RHA, is appropriate building material for construction of irrigation works and hydroelectric projects in Vietnam.

Inclusion of Health in Environmental Impact Assessment of Major Transport Infrastructure Projects in Vietnam.

Background: Infrastructure spending, especially in the transport sector, is expected to increase rapidly in Vietnam. This boost in transportation investment impacts health. Environmental impact assessments (EIAs) are essential tools for decision-making to reduce and mitigate anticipated impacts of development projects, and integration of health assessment as an essential part of the EIA process has been regulated in many high-income countries. There is, however, limited knowledge about how health is evaluated in these environmental assessments in low- and middle-income countries (LMICs) such as Vietnam. Methods: We did an analysis of EIAs of four major transport projects in Vietnam, applying a six-step coding framework previously used to investigate EIAs in the Australian context. Results: We found that health was inadequately considered in all four EIAs. There was no direct health assessment within the four EIAs due to the lack of formal requirements from either Government or the financing agency, the Asian Development Bank (ADB). Health issues were often identified as risks posed by the projects within the assessment of impacts on environmental conditions. A broader consideration of health was limited. When social outcomes of the projects were present in EIAs, they were often mentioned once without any detailed assessment or linking to health. There was no evidence linking health benefits and shifts towards active travel with the construction of two metro rail projects. Mitigation measures offered in all four EIAs were found to be generic and insubstantial. Conclusion: The health assessments in the EIAs of four transport projects in Vietnam were significantly less detailed than those in Australia, mainly due to the lack of legislative requirements. The lack of health content indicates the need for involvement of health experts in the environmental assessment process, as well as requirements for the health assessment to be integrated in EIA. Our findings suggest there is the need to build capacity both within and outside of government to fully consider the health impacts of infrastructure in EIA practice.

Knowledge Transfer from International Consultants to Local Partners

Inspired by the fact that local partners acquire substantial knowledge from foreign consultants, an empirical study has been conducted on four metro construction projects in Vietnam to assess the knowledge transfer in practice. The process and results have been recorded in this article. A two-stage model has been developed and tested by using data obtained from 130 respondents. The first stage demonstrates that there are at least six factors affecting the knowledge transfer from foreign consultants to local partners. The second stage shows that acquired knowledge helps to improve the performance of the local partners. In addition to well-known determinants such as the transferor's willingness, capacity to transfer, the learner's intent and capability to learn, the results of the study provide the evidence to confirm the important roles of knowledge-related factors and environment-related factors. Furthermore, this study enriches the literature on knowledge transfer by adding a look into a specific context of consulting services.

Evaluating Impacts of Financial Risks on Schedule Delays of International Highway Projects in Vietnam using Structural Equation Model

Evaluating Impacts of Financial Risks on Schedule Delays of International Highway Projects in Vietnam using Structural Equation Model

A Comparative Study on the Risk Perceptions of the Public and Private Sectors in Public-Private Partnership (PPP) Transportation Projects in Vietnam

A Comparative Study on the Risk Perceptions of the Public and Private Sectors in Public-Private Partnership (PPP) Transportation Projects in Vietnam

Construction auditing risk detection using neural network

Audit report plays a key role in determining the validity of final accounting in the completion of any construction project. However, the quality of reports depends heavily on the quality of the auditors themselves, whose variety of skill set and bias level could lead to different assessment outcome of the accounting risk level. This paper presents a method that detects auditing risk using neural network. The criteria to assess auditing risks will serve as inputs in the neural network, and the output will be the ranking of low, medium, high level of auditing risk. The proposed neural network was tested on 80 construction projects in Vietnam and the result shows the high accuracy level of this method in auditing risk detection.

IMPACTS OF RISK FACTORS ON THE PERFORMANCE OF PUBLIC-PRIVATE PARTNERSHIP TRANSPORTATION PROJECTS IN VIETNAM

The rapidly increasing demand and the inefficacy of financing transportation infrastructure project investments have contributed to various challenges for Vietnam in recent decades. Since the country’s budget is inadequate for investing in all necessary infrastructure projects, the Vietnam government has been inviting other economic sectors, especially the private sector, to participate in infrastructure development. The cooperation between the government agencies and the private entities, called PublicPrivate Partnership (PPP), must encounter various challenges leading to difficulties in attracting private investors. A main reason is that private investors must deal with critical risks concerning PPP investment environment. It is a challenging task for the government to optimally manage such risks to enhance the attractiveness of PPP projects for private investors. This paper examines the critical risk factors that influence the private sector’s investment decisions on PPP transportation projects in Vietnam. Risk factors inherent in typical PPP projects were compiled by comprehensive literature review. To reflect unique characteristics of PPP projects in Vietnam, the compiled risk factors were reviewed by a group of PPP experts from both the public and private sectors in Vietnam through indepth interviews and questionnaire surveys. In addition, ten PPP project case studies in Vietnam were analyzed to derive the risk profile of PPP transportation projects of the nation. These risk factors were quantitatively assessed based on their probabilities and impact levels. We found that the critical risk factors of PPP infrastructure projects in Vietnam are acquisition/compensation problems, approvals and permits, inadequate feasibility studies, finance market issues, subjective evaluation methods, and change in laws and regulations. By performing factor analysis, these critical risk factors were grouped into four categories: (1) bidding process, (2) finance issues, (3) laws and regulations, and (4) project evaluation issues. These critical risk factors represent the obstacles that repel private investors from PPP transportation projects in Vietnam. Thus, the Vietnam government agencies should meticulously address these issues to attract both domestic and foreign private investors in PPP projects.

DIFFERENT PERCEPTIONS OF CONCERN FACTORS FOR STRATEGIC INVESTMENT OF THE PRIVATE SECTOR IN PUBLIC-PRIVATE PARTNERSHIP TRANSPORTATION PROJECTS

This paper identifies the concern factors of private investors associated with Public-Private Partnership (PPP) transportation projects in Vietnam. The concern factors are incorporated into four main groups: (1) company profile; (2) finance; (3) opportunities; and (4) risk perceptions. The paper examines the different perceptions by the public and private sectors about these concern factors adopted by experienced professionals related to PPP transportation projects. Based on a questionnaire survey in Vietnam, the most concern factors of private investors are their own capacity, demand issues, legal and political risks, long-term income, and financial sources issues of the PPP project. Moreover, five factors that represent the significant differences between the private and public sectors including political risks, enhancement of company’s strength in its industry, construction risks, demand issues, and financial viability of the company are also discovered. Addressing the different perceptions is indispensable to ensure the public sector can establish necessary policies that appeal to both domestic and foreign private investors. The paper at the same time hopes to provide some of lessons for the private sector.

Evaluation of qualitative value for money of public-private partnership projects in Vietnam

Evaluation of qualitative value for money of public-private partnership projects in Vietnam

Risk analysis of schedule delays in international highway projects in Vietnam using a structural equation model

PurposeAs in other developing countries, increased highway development in Vietnam provides enormous opportunities for international construction companies (ICCs). However, a prolonged schedule delay (SD) can have an extremely detrimental impact on a project’s efficiency, cost and investment reputation. The purpose of this paper is to identify potential SD risk factors in international highway projects (IHPs) in Vietnam, and to explore the effects of and influences on such factors. A specific risk management framework is proposed as a useful tool for ICCs.Design/methodology/approachA system of SD risk indicators is presented for IHPs in Vietnam through a questionnaire survey. The system comprises 50 indicators that are grouped into 12 main factors. A structural equation model (SEM) is then used to assess the influences and mechanisms of these factors. Based on the obtained results, corresponding suggestions for preventing SD risks are presented and discussed.FindingsFirst, among the 12 aforementioned major factors, the authors identify eight facors that have significant effects on IHP SDs. Second, the SEM analysis reveals that policy flaws and the fiscal ability of the owner play the most important roles, on account of their direct and indirect influences on SDs.Originality/valueConsidering stakeholders and external environmental effects, a system of indicators is introduced to explore SD risks to IHPs. In particular, an SEM is used to assess the effects of potential SD factors and characterize their interacting influences. This study could help ICCs to avoid or mitigate project delays and cost overruns in Vietnam, and also provide valuable lessons for other developing countries.

Culture EPC oil and gas project in Vietnam: grounded theory

PurposeEngineering-procurement-construction (EPC) projects in the oil and gas industry are special projects involving diverse cultures, behaviours and complexity in global business. Among these elements, culture is a crucial factor contributing to project performance. Several studies have been conducted on culture and its impact on project performance, especially in construction. However, studies on the cultural factors affecting EPC projects have not yet been carried out, especially for projects in the oil and gas industry. Thus, this study aims to explore and identify the cultural factors that affect the performance of oil and gas EPC projects in Vietnam.Design/methodology/approachIn all, 60 people with experience in EPC projects were interviewed for the study. Axial and selective coding were used to build the final grounded theory.FindingsThe research findings show that the main cultural factors affecting the performance of EPC projects are leadership, organisation, planning, communication, human resources, goal and orientation.Originality/valueThis study provides empirical evidence for the importance of cultural factors that affect the success of EPC projects. It can serve as a guide on how to manage EPC projects and how to overcome the cultural difficulties in oil and gas EPC projects in Vietnam.

The Impact of Project Organizational Culture on the Performance of Construction Projects

Cultural influence has recently received significant attention from academics due to its vital role in the success or failure of a project. In the construction industry, several empirical investigations have examined the influence of culture on project management. The aim of this study is to determine the impact of project organizational culture on the performance of construction projects. A total of 199 completed construction projects in Vietnam with specific data gathering through questionnaires were analyzed. The findings reveal that contractor commitment to contract agreements is the most significant cultural factor affecting project performance. Goal alignment and reliance, contractor commitment, and worker orientation (i.e., commitment to workers) contribute to improved overall performance and participant satisfaction. Contractor commitment and cooperative orientation enhance labor productivity, whereas goal alignment and trust and contractor commitment ensure learning performance (i.e., learning from experience). The findings of this study may assist construction professionals in implementing practices that can contribute to the sustainability and success of construction projects.

Cost overrun factor analysis for hospital projects in Vietnam

Many governments in the world are now under heavy pressure for improving services of health care whilst always attempt to use their scarce resources efficiently. Hospital buildings are basically one of the important elements of health care systems. This paper aims to determine factors causing cost overrun in Vietnamese hospital projects. Survey questionnaire and Exploratory Factor Analysis (EFA) are two main methods. The finding indicates that main groups causing cost overrun in hospital projects are: additional work, material cost, and delays. Based on groups of cost overrun, twenty factors were also discovered as well as ranked. In addition, solutions were suggested to solve the cost overrun issue, and then comparisons with previous studies were presented. Results of the study could be applied to monitor policies for the management of hospital projects, and support practitioners in attaining the success of hospital projects.

Research on Quality Risk of EPC Hydropower Projects in Vietnam

Engineering, procurement and construction (EPC) contracts are on the way to become the most usual form of contracting applied by the private sector to undertake construction works on large scale Hydropower projects. If EPC contract management is not implemented and controlled properly. Quality is the first important factor for any contractors who involve in the hydropower project execution. The purpose of this study is to investigate and evaluate risks causing not good quality of EPC hydropower projects in Vietnam. In addition, the study also provided the recommendations for project practitioners to mitigate the impacts of those identified risks. The findings of this study can be a good managerial reference for project management teams who are working in other countries that have similar economic and investment environments to Vietnam to get their EPC construction project completed on quality, thus will ensuring the benefits to the government, the investors, the contractors, and the parties involved.

Concrete Production and Casting in the Overseas Civil Projects─The Issues Experienced by Japan ODA Infrastructure Projects in Vietnam─

Concrete Production and Casting in the Overseas Civil Projects─The Issues Experienced by Japan ODA Infrastructure Projects in Vietnam─

Unsolicited Proposals for PPP Projects in Vietnam: Lessons from Australia and the Philippines

Unsolicited Proposals for PPP Projects in Vietnam: Lessons from Australia and the Philippines

Critical Success Factors of International Projects in Vietnam

This empirical paper focuses on the critical success factors of international projects in Vietnam. Our regression results indicate that two factors including project conditions and partners’ capacities do not have significant impact on the project success in Vietnam. In contrast, we found only two factors including partners’ commitments and communication that have significant and positive impact on the project success. So, in an environment with many policy changes like Vietnam, if the stakeholders make strong commitments, the success likelihood of international project is higher. Also, smooth internal and external communication contributes plays an important role in the project management, stakeholder connection and decision-making process that are favorable for the project success.

Matlab application on ecotechnic analysis of Vietnam wind power project


 
 
 Vietnam has fundamental advantages to implement the wind power project. Because of being surrounded by sea areas, wind power projects in Vietnam have a promise future. However, implementing an ecotechnic analysis of a wind power project has a fairly challenge because of seasonal change as well as input data’s fluctuation. The paper presented a method based on Matlab programming utilized for ecotechnic analysis the wind power projects. The math diagram built with the consideration of all input data’s changing will be shown to make the ecotechnic analysis easier and faster. The results deducted from Matlab programming will be compared with ones made by expertise method. The conclusion about advantages of method is pointed out to help project managers have another choice in making ecotechnic analysis of wind power project.
 Việt Nam có những thuận lợi cơ bản để thực thu các dự án điện gió. Do đặc điểm địa lý, bao quanh bởi khá nhiều các vùng biển, các dự án điện gió của Việt Nam có tính khả thi và một tương lai đầy hứa hẹn. Tuy vậy, thực thi các phân tích kinh tế kỹ thuật của một dự án điện gió có thách thức không nhỏ bởi những thay đổi của yếu tố mùa cũng như những thay đổi của các yếu tố đầu vào. Bài báo giới thiệu một phương pháp dựa vào quá trình lập trình trên Matlab, ứng dụng để phân tích kinh tế kỹ thuật các dự án điện gió. Lưu đồ thuật toán được xây dựng có xem xét đến sự thay đổi của các yếu tố đầu vào sẽ giúp quá trình phân tích nhanh hơn và dễ dàng hơn. Các kết quả thu được sẽ được so sánh với các kết quả được tiến hành theo phương pháp chuyên gia. Kết luận về những ưu điểm của phương pháp cũng được đưa ra để giúp các nhà quản lý các dự án điện gió có được lựa chọn nữa trong tiến hành phân tích kinh tế kỹ thuật các dự án điện gió.
 
 

Quantifying organic carbon storage and sources in sediments of Dong Rui mangrove forests, Tien Yen district, Quang Ninh province using carbon stable isotope

Quantifying organic carbon storage and sources in sediments of Dong Rui mangrove forests, Tien Yen district, Quang Ninh province using carbon stable isotope

Impact of projects initiating group marketing of smallholder farmers—A case study of pig producer marketing groups in Vietnam

In recent years, several projects in Vietnam have focused on establishing farmer groups to link small-scale pig producers to markets in order to improve their livelihoods. To compare the success between different approaches and by contrasting them to individual farmers without joint marketing, data were collected from 286 members of 18 pig marketing groups initiated by seven projects and from 479 non-members in three provinces and the capital of Vietnam. Groups were categorized in Common Interest Groups, Cooperative Groups and Cooperatives. All groups were comparatively described according to member set-up, management, financing and marketing. Propensity score matching was used to evaluate the economic success, as one of the key factors for a long-term operation of farmer groups. Results showed that the intervention projects supporting farmer groups with training and in-kind subsidies seem to have the highest impact on the increase of income of members in comparison with non-members.