The Impact of Saltwater Intrusion on Rice Cultivation and Aquaculture in Ham Tan commune, Tra Cu District, Tra Vinh Province, Mekong Delta, Vietnam

This article discusses the impact of saltwater intrusion on rice cultivation and aquaculture in Ham Tan commune, Tra Cu District, Tra Vinh Province, Mekong Delta, Vietnam. Based on in-depth interviews and sociological surveys conducted in Ham Tan commune, Tra Cu District, Tra Vinh Province, the article highlights the main findings. Firstly, rice cultivation and aquaculture in Ham Tan are multidimensionally affected by the negative impacts of saltwater intrusion. Secondly, saltwater intrusion reduces crop yields and decreases the area available for rice cultivation. It also increases labor days and investment costs in rice production. Thirdly, saltwater intrusion decreases the productivity of aquaculture. In fact, a significant number of households engaged in aquaculture experienced complete losses due to saltwater intrusion

The Impact of Saltwater Intrusion on Rice Cultivation and Aquaculture in Ham Tan Commune, Tra Cu District, Tra Vinh Province, Mekong Delta, Vietnam

This article discusses the impact of saltwater intrusion on rice cultivation and aquaculture in Ham Tan commune, Tra Cu District, Tra Vinh Province, Mekong Delta, Vietnam. Based on 15 in-depth interviews and sociological surveys conducted in Ham Tan commune, Tra Cu District, Tra Vinh Province, the article highlights the main findings. Firstly, rice cultivation and aquaculture in Ham Tan are multidimensionally affected by the negative impacts of saltwater intrusion. Secondly, saltwater intrusion reduces crop yields and decreases the area available for rice cultivation. It also increases labor days and investment costs in rice production. Thirdly, saltwater intrusion decreases the productivity of aquaculture. In fact, a significant number of households engaged in aquaculture experienced complete losses due to saltwater intrusion

The Impact of Saltwater Intrusion on Rice Cultivation and Aquaculture in Ham Tan commune, Tra Cu District, Tra Vinh Province, Mekong Delta, Vietnam

This article discusses the impact of saltwater intrusion on rice cultivation and aquaculture in Ham Tan commune, Tra Cu District, Tra Vinh Province, Mekong Delta, Vietnam. Based on in-depth interviews and sociological surveys conducted in Ham Tan commune, Tra Cu District, Tra Vinh Province, the article highlights the main findings. Firstly, rice cultivation and aquaculture in Ham Tan are multidimensionally affected by the negative impacts of saltwater intrusion. Secondly, saltwater intrusion reduces crop yields and decreases the area available for rice cultivation. It also increases labor days and investment costs in rice production. Thirdly, saltwater intrusion decreases the productivity of aquaculture. In fact, a significant number of households engaged in aquaculture experienced complete losses due to saltwater intrusion

Willingness to Pay for the Preservation of Lo Go - Xa Mat National Park in Vietnam

Lo Go - Xa Mat National Park has great value in terms of biodiversity but preserving the park is a great challenge for the Vietnamese government. This study estimated the willingness to pay of households to preserve Lo Go - Xa Mat National Park, using the contingent valuation method. We employed the single-bounded dichotomous choice question format to estimate how much households in Ho Chi Minh City were willing to contribute towards a preservation plan for the park. This plan comprised twelve preservation activities and compensating the local communities for their foregone income. The study found that households in Ho Chi Minh City were willing to pay at least VND 6,209 per month for three years for the preservation of Lo Go - Xa Mat National Park. With protest votes included, factors strongly affecting households' willingness to pay were bid amount and the amount of their monthly electricity bill. The education level of the respondents and the number of working people in the household had significant but lesser impact on their willingness to pay. Without protest votes, the bid amount, monthly electricity bill amount and education level of respondents significantly affected willingness to pay. We found that the annualized benefit value of the project was larger than its annualized cost. This indicated that the preservation plan was economically viable. This study does not provide the total value of Lo Go - Xa Mat National Park, but it shows the great value of the park in terms of local households' willingness to pay for its preservation and this is important information for policy-makers in deciding how to protect the park efficiently.willingness to pay, Vietnam

Impact of inventory inaccuracy on service-level quality: A simulation analysis

This article discusses the impact of inventory inaccuracy on service-level quality in (Q,R) continuous review, lost-sales inventory models. A simulation model is built to study the behaviour of this kind of model exposed to an inaccuracy in inventory records as well as demand variability. We have observed an unusual result which goes against certain empirical practices in the SMEs that consist in hiking the inventory level proportionally to the data inaccuracy rate. A nonmonotone function shows that at the outset, the service-level quality is lowered as the inaccuracy rate increases but when the inaccuracy rate becomes much higher this quality is conversely enhanced. This relation can equally be observed given that stocktaking commences as soon as the threshold of decline in the service-level rate has been reached and when demand consequently dwindles. Finally, another noteworthy result also shows the same phenomenon between the function involving a level of safety stock defined by the simulation and the function between the service-level quality and the inventory inaccuracy. These different observed results are discussed in terms of both contribution to the (Q,R) inventory management policies in SMEs and of the limitations to this study.Continuous review inventory system, inventory inaccuracy, continuous model, discrete-time simulation

Modeling a distributed Heterogeneous Communication System using Parametric Timed Automata

In this report, we study the application of the Parametric Timed Automata(PTA) tool to a concrete case of a distributed Heterogeneous Communication System (HCS). The description and requirements of HCS are presented and the system modeling is explained carefully. The system models are developed in UPPAAL and validated by different test cases. Part of the system models are then converted into parametric timed automata and the schedulability checking is run to produce the schedulability regions

Stimulation of Purchase Behavior Toward Biodegradable Bags: The Role of Green Skepticism

Today, the habit of using light, durable, and disposable plastics that are poorly managed is one of the main reasons for environmental pollution, biodiversity loss, and climate change in Vietnam. Besides, due to the lack of consumption, most plastic companies in Vietnam refuse to switch their production to biodegradable plastic bags. The study is conducted to promote the purchase behavior of biodegradable plastic bags, which can reduce the consumption of non-degradable plastic in Vietnam. A non-probability sampling method was applied, with a sample size of 828 consumers who lived in Southeast Vietnam. SmartPLS software was applied to examine the hypotheses. The results show that attitudes, coping appraisal, and threat positively influence the purchase behavior of biodegradable plastic bags. Green skepticism negatively moderates the relationship between attitudes, coping appraisal, threat appraisal, and purchase intention toward biodegradable plastic bags. This study also added psychological factors, such as green skepticism, to fill the perception-behavior gap from previous studies and extend the protection-motivation theory. Some managerial implications will be proposed for plastic companies in Vietnam to switch their production toward biodegradable plastic bags. Besides, consumers will also be given guidance and encouragement to use these products through integrated marketing communication strategies. Doi: 10.28991/ESJ-2024-08-03-04 Full Text: PD

Enseignement des expressions figées métaphoriques françaises à des apprenants vietnamiens

Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal

Optimization of Logistics Services in Vietnam Through LOGIVAN Application

Logistics is a type of service that plays an important role in promoting the country's economic growth. In addition, it is also of great significance to the transport sector in Vietnam in dealing with the challenges of traffic congestion in large cities. In Vietnam today, logistics services are growing. However, there is one major limitation that still exists, that is freight costs are still high. This does not meet the best requirements of customers. There are many reasons for this problem, one of the reasons is that trucks only carry one-way cargo, but there are no goods to ship backwards. The paper studies the application of LOGIVAN smart transport model in developing Logistics services in Vietnam today. Research results show that LOGIVAN transport model is the optimal model in solving the problem of empty cars in the transport of goods when they go back to the place of departure. This helps minimize Logistics costs for businesses, increases income for drivers and leads towards sustainable transport development. LOGIVAN develops two platform solutions for goods owners and vehicle owners. Accordingly, the author of the article confirms the quality of this model in developing Logistics services in Vietnam and guide the operation for users via applications on personal mobile devices at the same time. Keywords: Logistics; LOGIVAN; Vietnam. DOI: 10.7176/JESD/10-14-01 Publication date:July 31st 202