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1 – 10 of 30Trong Nghia-Nguyen, Sanjay Kumar Shukla, Dang Dinh Chung Nguyen, Le Gia Lam, Phuoc H-Dang and Phu-Cuong Nguyen
This paper aims to present a new discrete method to predict average excess pore pressure and degree of consolidation for soft ground using prefabricated vertical drains under…
Abstract
Purpose
This paper aims to present a new discrete method to predict average excess pore pressure and degree of consolidation for soft ground using prefabricated vertical drains under time-dependent surcharge and/or vacuum loading and multi-soil layers.
Design/methodology/approach
The drain is discretized into a number of mesh points at which the average excess pore pressure is estimated. The conventional Laplace technique is used to solve the analytical equations. The proposed method is validated with previous findings reported in the literature. Moreover, field measurements are used to verify the accuracy of the proposed method with a case history of ground improvement by prefabricated vertical drains using the vacuum consolidation technique.
Findings
In comparison to past studies, this new discrete method is simpler to be implemented in a spreadsheet calculation to achieve a rational solution with less computational time for similar consolidation problems. Moreover, the current approach also incorporates a solution for multi-soil layers, which can hardly be derived by analytical solutions.
Originality/value
According to authors’ knowledge, this is the first-time discrete method by Laplace transform technique is applied for the vertical drain.
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Yaw A. Debrah and Ian G. Smith
Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on…
Abstract
Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on work and employment in contemporary organizations. Covers the human resource management implications of organizational responses to globalization. Examines the theoretical, methodological, empirical and comparative issues pertaining to competitiveness and the management of human resources, the impact of organisational strategies and international production on the workplace, the organization of labour markets, human resource development, cultural change in organisations, trade union responses, and trans‐national corporations. Cites many case studies showing how globalization has brought a lot of opportunities together with much change both to the employee and the employer. Considers the threats to existing cultures, structures and systems.
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Lam Do and Thai-Ha Le
This research investigates how subsidy programs in Vietnam's residential electricity market affect consumers' well-being.
Abstract
Purpose
This research investigates how subsidy programs in Vietnam's residential electricity market affect consumers' well-being.
Design/methodology/approach
Two perspectives are employed: cash transfer and quantity-based subsidy. The effectiveness of cash transfer is measured in three ways: benefit incidence, beneficiary incidence and materiality. The quantity-based subsidy is established under the increasing block rate pricing, with the first two block rates being lower than the marginal cost. To improve the quantity-based subsidy, the research examines the consumer surplus under four proposals.
Findings
The results show that both types of subsidies are ineffective in supporting the poor.
Research limitations/implications
In order to achieve a more equal distribution among households, the subsidy program should remove all subsidized blocks and reflect the full marginal cost. Changes should be made to the price structure regarding both marginal price and intervals.
Practical implications
To mitigate the impact of the quantity-based subsidy, the government should improve the cash transfer by reducing extortion and improving targeting efficiency, especially for poor households living in rented houses.
Originality/value
This paper is the first to discuss the welfare effect of the electricity subsidy in Vietnam. First, it comprehensively evaluates the cash transfer subsidy in Vietnam. Second, it suggests a modification in the residential electricity tariff.
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Dat Nguyen, Anh Le Hoang, Minh Anh Nguyen Vu, Viet Thanh Nguyen and Tram Anh Pham
Shipping is a major source of air pollution, causing severe impacts on the environment and human health, greatly contributing to the creation of greenhouse gases and influencing…
Abstract
Purpose
Shipping is a major source of air pollution, causing severe impacts on the environment and human health, greatly contributing to the creation of greenhouse gases and influencing climate change. The research was investigated to provide a better insight into the emission inventories in the Red River in Hanoi (Vietnam) that is often heavily occupied as the primary route for inner-city waterway traffic.
Design/methodology/approach
The total emissions of seven different pollutants (PM10, PM2.5, SOx, CO, CO2, NOx and HC) were estimated using the SPD-GIZ emission calculation model.
Findings
The results show that CO2 has the most significant contribution to the gas volume emitted: 103.21 tons/day. Remarkably, bulk carriers are the largest emission vehicle, accounting for more than 97% of total emissions, due to their superior number and large capacity.
Social implications
The result to have a roadmap for making efforts to fulfil its commitment so that it could achieve its net-zero climate target by 2050 in Vietnam as committed at COP26.
Originality/value
In this research, the number of vehicles and types of vessels travelling on the Red River flowing within Hanoi territory and other activity data are reported. The tally data will be used to estimate emissions of seven different pollutants (PM10, PM2.5, SOx, CO, CO2, NOx and HC) using a method combining both top-down and bottom-up approaches.
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It Nguyen Van, Thanh Tiep Le and Anna Kotaskova
This study aims to show how market orientation (MO), brand (BR) and business strategy (cost leadership strategy and differentiation strategy), which play mediating and moderating…
Abstract
Purpose
This study aims to show how market orientation (MO), brand (BR) and business strategy (cost leadership strategy and differentiation strategy), which play mediating and moderating roles, respectively, can increase competitive advantage (CA). With a focus on brand, market orientation, cost leadership strategy (CS) and differentiation strategy (DS), as well as an analysis of variance control on varying business sizes per business seniority, the current study made a theoretical contribution.
Design/methodology/approach
An empirical study was created using a quantitative methodological technique. The surveyed data were collected from 379 managers or owners who participated in a face-to-face survey at different food processing companies in Vietnam. To test the hypotheses, the gathered information was examined utilizing multigroup analysis and partial least squares structural equation modeling.
Findings
The brand was found to have the greatest positive impact on competitive advantage, followed by a business strategy that positively influenced competitive advantage, and, finally, business strategies that significantly moderated the third strong positive impact between market orientation and competitive advantage. Market orientation has the fourth strong positive impact on competitive advantage, whereas brand has the lowest positive impact on market orientation.
Originality/value
This is the first investigation, according to the authors’ knowledge, into the role of market orientation as a mediator in the relationship between brand and competitive advantage in addition to the regulatory role of business strategy at two strategic levels: cost leadership and strategic focus as well as the difference between competitive advantage and market orientation in the Vietnamese food sector.
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Thi Phuong Linh Nguyen, Xuan Hau Doan, Thu Thuy Nguyen and Thi Mai Nguyen
The purpose of this paper is to investigate factors affecting Vietnamese farmer's intention toward organic agricultural production based on research model integrating theories…
Abstract
Purpose
The purpose of this paper is to investigate factors affecting Vietnamese farmer's intention toward organic agricultural production based on research model integrating theories: theory of planned behavior (TPB) and norm activation model (NAM).
Design/methodology/approach
After in-depth interviews with 5 agricultural researchers and 5 farmers, the authors determined the official research model and built a complete survey. Data were collected from 318 farmers in the Hanoi, Vietnam by directly survey. Statistical methods, such as Cronbach's alpha analysis, exploratory factor analysis (EFA), confirmatory factor analysis (CFA) and structural equation modeling (SEM), were used to analyze the data.
Findings
This paper shows that attitude, subjective norms, perceived behavioral control and personal norm were significantly related to intention of the farmers; awareness of consequences was positively related to ascription of responsibility, personal norm, attitude and subjective norms; ascription of responsibility has a positive relationship with personal norm. The TPB-NAM integration model is proven to be superior to the original TPB model when studying factors affecting Vietnamese farmer's intention toward organic agricultural production.
Research limitations/implications
The main limitation of this paper is that the sampling method is not representative for the whole country and just stops at researching the intentions of farmers without understanding the practices of organic agricultural production.
Practical implications
The findings indicate that state management agencies in Vietnam need to pay attention to raise awareness among farmers about the role of organic farming, communicate to farmers through different channels about the benefits of organic farming compared to conventional agriculture and form information spillover groups between farmers who have produced organic agriculture and have not yet produced organic agriculture.
Originality/value
This paper contributes to the existing literature by focusing on integrating TPB and NAM when understanding farmers' intention toward organic agricultural production in Vietnam. This integrated model has proven the suitability of combining two approaches, a rational approach and an ethical approach, when studying farmer intentions.
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Nga Thi Tuyet Phan and Terry Locke
The purpose of this paper is to explore the influence of culture on the sense of self-efficacy in teaching English as a Foreign Language of a group of university teachers in…
Abstract
Purpose
The purpose of this paper is to explore the influence of culture on the sense of self-efficacy in teaching English as a Foreign Language of a group of university teachers in Vietnam. Research exploring the relationship between culture and self-efficacy is extremely rare despite the acknowledged importance of culture in the formation of self-efficacy beliefs.
Design/methodology/approach
This study took the form of qualitative research with diverse, data collection instruments: individual interviews, focus group discussions, observations and journaling.
Findings
Findings indicate that certain features of the Vietnamese cultural context impacted on the way the study teachers constructed their sense of self-efficacy. Specifically, under the influence of a Vietnamese sense of belonging, the study teachers tended to rely more on efficacy-building information from other people rather than from themselves. The perception of inequality in power may have heightened negative emotional arousal, thus contributing to a negative sense of self-efficacy among the teachers. The Vietnamese concept of face and the high status of teachers in the social hierarchy in part mediated teachers’ sense of self-efficacy.
Social implications
The perceived burden of performing both parenting and teaching roles and responsibilities may have diminished the self-efficacy in teaching of female teachers.
Originality/value
The contribution and implications of the study are discussed.
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Robert A. Kunkel, Michael C. Ehrhardt and Gregory A. Kuhlemeyer
Outlines previous research on the relationship between dividend policy and stock returns; and uses a linear programme and multi‐index model to form an investment strategy to see…
Abstract
Outlines previous research on the relationship between dividend policy and stock returns; and uses a linear programme and multi‐index model to form an investment strategy to see whether dividend yields increase stock returns. Explains the methodology, tests it on 1965‐1989 US data and presents the results, which suggests that the multi‐index model is superior to the single index market model in terms of explanatory power and volatility; but provides conflicting conclusions on the relevance of dividends to stock returns. Suggests that the negative relationship between dividends and stock returns can be explained by Jensen’s (1986) free cash flow theory and the influence of transaction costs.
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Tan Phat Nguyen and Nicholas Chileshe
The Vietnam construction industry has considerably developed since 1986 as a result of “Doi Moi” or all-round renovation process. However, despite the pace of economic reforms, a…
Abstract
Purpose
The Vietnam construction industry has considerably developed since 1986 as a result of “Doi Moi” or all-round renovation process. However, despite the pace of economic reforms, a number of challenges continue to plague the construction industry. The purpose of this paper is to revisit the factors causing construction project failure in Vietnam. Some of the selected best practices from Brazil, Russia, India, China and South Africa (BRICS) and China, Indonesia, Vietnam, Egypt, Turkey, South Africa (CIVETS) are discussed.
Design/methodology/approach
Using a mixed method approach, data were collected from construction stakeholders in Vietnam using a postal survey questionnaire and semi-structured interviews. The quantitative data were subjected to descriptive statistics using ranking and frequencies analysis, and qualitative data employed content analysis.
Findings
Despite the lack of systematic approach to managing projects risks, there is a high level of acknowledgement regarding the importance of risk management practices. The highly ranked critical factors still causing construction project failure in Vietnam are: disregard of the significance of project planning process and project planning; lack of experience in executing complicated project; poor design capacity and frequent design changes; lack of knowledge and ability in managing construction projects; lack of financial capacity of owner; poor performance of contractors; lack of a systematic approach to managing the project and entire organisation; corruption and bribery in construction projects; the delays in payment; and economic volatility and high inflation.
Practical implications
The identified and revisited project failure factors could be used as a “road map” for the revaluation, and development of appropriate project management practices.
Originality/value
The construction sector has undergone through significant structural changes following “Doi Moi”. This study provides the opportunity to realign the strategies for addressing project failure factors and learning from comparative studies in BRICS and CIVETS countries.
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Jean‐Joseph Cadilhon, Andrew P. Fearne, Paule Moustier and Nigel D. Poole
This article presents a conceptual framework for the analysis of vegetable supply chains in a South East Asian context and the role wholesale markets play in these chains…
Abstract
This article presents a conceptual framework for the analysis of vegetable supply chains in a South East Asian context and the role wholesale markets play in these chains. Following a review of the literature on food marketing systems in developing countries and preliminary fieldwork in South East Asia, a holistic framework is proposed, including what are perceived to be the critical factors in the development of improved fresh food marketing systems: domestic legal and policy factors, international trade policies and food markets, history, geography, and cultural and social norms. The particular role of trust and collaboration among stakeholders in the Ho Chi Minh City vegetable marketing system is highlighted.
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