Changing food consumption patterns in rural and urban Vietnam: Implications for a future food supply system

Rapid income growth and urbanisation could significantly change the composition of the food basket in many emerging economies. This study estimates a demand system, including 15 major food items in Vietnam, with multiyear household survey data. We find a large variation in the estimated price elasticities (–0.05 to –0.88) and expenditure elasticities (–0.16 to 2.56). Food types, urban status and income groups can explain this variation. We also find that the staple food, rice, is already an inferior good for rich urban households in Vietnam. Moreover, food preferences are evolving away from rice but towards animal proteins (fish, pork, chicken, eggs and milk), fruits and vegetables, irrespective of urban status and income groups. As the Vietnam economy continues to grow with a doubling of gross domestic product (GDP) in the next decade, per capita rice consumption in both urban and rural areas and across different income groups will continue to decline, whereas demand for other high‐value products will rise. Thus, government policy should focus on encouraging demand‐oriented food production. In addition, crop diversification at the farm level needs to improve substantially to meet the rising demand for these food products due to income growth and urbanisation.     

Drivers of transaction costs affecting participation in the rental market for cropland in Vietnam

Farm incomes in rural Vietnam are tightly constrained by very small farm sizes. Stringent limits on the area of cropland that individuals may own means that farmers need a well‐functioning rental market to consolidate land parcels, grow their farm enterprises, adopt new technology and increase incomes. This research investigates the efficiency and equity impacts of the rental market in rural Vietnam and attempts to identify transaction costs impeding the market. A generalised ordered logit model with shifting thresholds allowing transaction costs to impact lessors and lessees differently was specified and estimated using data extracted from the Vietnam Household Living Standards Surveys. The findings show that rental transactions reduced imbalances in factor endowments, transferring cropland to households that were relatively land‐poor but more willing and able to farm. However, the market is constrained by transaction costs that affect lessors and lessees differently. It is recommended that government should complete its land registration program and relax restrictions on the use of wetlands to grow crops other than rice. It should also improve access to all‐weather roads as this encourages participation on both sides of the rental market, whereas better access to communications infrastructure was found to promote only the supply side.     

A Participatory Simulation to Facilitate Farmers' Adoption of Livestock Feeding Systems Based on Conservation Agriculture in the Uplands of Northern Vietnam

In the mountain areas of northern Vietnam, extensive husbandry of large-ruminants is limited by the lack of natural forage. Since 2000, the Mountain Agrarian System Program has been concerned with this issue and has evaluated technical alternatives aimed at sustainable integration of crop-livestock systems. One alternative consists of feeding systems for largeruminants based on cropping systems with plant cover. Diffusion of information about the new system is supported by a set of interactive communication tools for use between farmers and researchers. A participatory simulation method was developed that combines a compartmental model of the village territory with five technical innovations. Farmers simulate the adoption of the innovations they choose among food-forage cropping systems in rotation or in association, and urea-treated straw. They evaluate the quantity of forage that can be grown for their herd using the chosen set of techniques.

Simulations revealed farmers' constraints and objectives in adopting sustainable cropping systems on the hillsides while maintaining a small animal husbandry system. The results obtained by each farmer provide a useful basis for discussion about the implementation of innovation. This participatory simulation method could be more widely used to facilitate the diffusion of innovations such as integrating livestock feeding systems with conservation cropping practices.     

Mean-variance hedging for continuous processes: New proofs and examples

Let be a special semimartingale of the form and denote by the mean-variance tradeoff process of . Let be the space of predictable processes for which the stochastic integral is a square-integrable semimartingale. For a given constant and a given square-integrable random variable , the mean-variance optimal hedging strategy by definition minimizes the distance in between and the space . In financial terms, provides an approximation of the contingent claim by means of a self-financing trading strategy with minimal global risk. Assuming that is bounded and continuous, we first give a simple new proof of the closedness of in and of the existence of the F?llmer-Schweizer decomposition. If moreover is continuous and satisfies an additional condition, we can describe the mean-variance optimal strategy in feedback form, and we provide several examples where it can be computed explicitly. The additional condition states that the minimal and the variance-optimal martingale measures for should coincide. We provide examples where this assumption is satisfied, but we also show that it will typically fail if is not deterministic and includes exogenous randomness which is not induced by .     

Sending Vietnamese Rice Farmers Back to School: Further Evidence on the Impacts of Farmer Field Schools

This study evaluates the impact of farmer field schools (FFS) on knowledge, insecticide use, and yield using a nonconsecutive, two‐year panel data that allows one to control for nonrandom selection. Regression analysis using a difference‐in‐difference approach indicates FFS training did not result in statistically significant impacts on insecticide use and yield over the period of time examined. However, there is some evidence that FFS had an “initial” knowledge impact, but it was not sustained over time. Retraining FFS graduates may be an attractive option to help maintain knowledge and improve performance over time, but we do not find empirical evidence on the effectiveness of this strategy based on a small sample of retrained farmers. La présente étude examine l’impact du programme Champ‐École‐Paysan (CEP) (Farmer Field Schools – FFS) sur l’acquisition des connaissances, l’utilisation d’insecticides et le rendement, à l’aide de données de panel non consécutives recueillies sur une période de deux ans et permettant de maîtriser la sélection non aléatoire. Une analyse de régression utilisant la méthode de différence de différences a révélé que la formation offerte dans le cadre du programme CEP n’a pas eu d’impact statistiquement significatif sur l’utilisation d’insecticides ni sur le rendement au cours de la période visée par l’étude. Toutefois, il semble que le programme CEP a eu un impact sur l’acquisition des connaissances au début, mais que cet impact n’a pas été soutenu au fil du temps. Le recyclage des participants au programme CEP peut constituer une option intéressante pour le maintien des connaissances et l’amélioration du rendement au fil du temps. Par contre, l’étude d’un petit échantillon de producteurs recyclés n’a pas fourni de preuve empirique permettant de croire à l’efficacité de cette stratégie.     

Hollowing out of middle-pay jobs in Ohio: An exploratory analysis

Hollowing out is a term that refers to the decline in the share of middle-pay and middle-skilled jobs relative to low-pay and high-pay jobs. This study employs county-level occupational data at the place of employment to document hollowing out of middle-pay jobs across regions in Ohio. The county-level data with occupational information allow us to study how regions' economic heterogeneity contributes to the decline of middle-paying jobs in Ohio over the 2001–2019 period. Of 88 counties in Ohio, 77 counties experienced declines in the shares of middle-paying jobs. On average, Appalachian Ohio counties experienced higher hollowing out rates than other counties. We found that the hollowing out of middle-paying jobs in Ohio is associated with the declines in the shares of manufacturing and mining jobs.     

The classification of heritage tourists: a case of Hue City,Vietnam

Heritage, especially with World Heritage status, is increasingly becoming the main attraction of many tourist destinations. Heritage tourism is also the major tourism product in Hue city, Vietnam. Hitherto, there are almost no official statistics and research pertaining to heritage tourism as well as heritage tourists in Hue. This study aims at providing a preliminary profile of heritage tourists to Hue city and identifying different categories of heritage tourists, with a special focus on package tourists. The international heritage tourists' profile seems to be similar to official statistics of international arrivals, indicating almost no difference in socio-demographic profile between heritage tourists and general tourists in the context of Hue. Various significant differences were found between international and domestic tourists in terms of tourist characteristics, trip profile and the perception of Hue. Adopting McKercher's [(2002) Towards a classification of cultural tourists. International Journal of Tourism Research, 4, 29–38] cultural tourist classification, five categories of heritage tourists were identified, including purposeful heritage tourists, sightseeing heritage tourists, casual heritage tourists, incidental heritage tourists and serendipitous heritage tourists. Among these, sightseeing heritage tourists and purposeful heritage tourists were dominant.     

The effects of interaction behaviors of service frontliners on customer participation in the value co-creation: a study of health care service

This research explores the roles of various interaction behaviors of service frontliners in activating customer participation and creating customer value in the context of health care service. Based on the data of 285 paired patient–physician cases of serious chronic diseases, the analysis revealed that individuated, relational, and empowered interactions expressed by a service frontliner play a critical role in activating customer participation, leading to a higher level of perceived value; while ethical interaction has a direct-only impact on perceived value. These results imply that frontliner interaction can be further broken into participation-activating interaction and value-enhancing interaction. Both of which eventually lead to the improvement of customer value.     

The nexus between firm-supply-chain relationships and the potential for tourism development: A case study approach

This exploratory study examines the importance of firm-supply chain relationships for tourism development. Based upon prior observations, two firms seeking to boost their tourism offerings and operating in a popular Vietnamese tourist destination were selected. Semi-structured face-to-face and online interviews were conducted and complemented by on-site visits, and firm information. Various salient dimensions emerged from the data analysis. The ‘performance catalyst’ and ‘detectable value adding’ dimensions underscore the supply chain's benefits, while the ‘discerning relations’ dimension highlights deeper relationships through mutual support, building trust, or demonstrating care. Conceptually, the study proposes a framework with associated theoretical and practical implications.     

The dynamics of textile firm responses to the restriction of endocrine disrupting surfactants: a Vietnam case study

Abstract

Since textile industry has been claimed to endanger the environment and human health, the insight of textile firm behavior regarding chemical use and discharge is vital for designing environmental risk management strategies. This study aimed to explore the dynamics of responses to the restriction of nonylphenol (NP) and its ethoxylates (NPEOs) among the Vietnamese textile manufacturers from the perspectives of attitude and the perceptions of adaptabilities, risks, benefits, and barriers. The chemicals are used as surfactants and are known to be responsible for endocrine disrupting effects. In-depth interviews were conducted with technical specialists from four textile firms and one chemical supplier. Regulatory and market situations with regards to the chemicals were also assessed. The findings revealed varied responses to chemical elimination where perceived technical risk, financial risk, benefits, and barriers played different roles in driving a certain action. The attitude towards chemical restriction was shaped by the trade-off between perceptions of financial risk and benefits and was moderated by market strategy. Efforts, such as enhanced washing or reductions in the dose of NP/NPEOs, imply the potency of continuous discharge of these chemicals into the environment, suggesting critical investigations on NP/NPEOs removal to prioritize actions for balancing between economic growth and environmental protection. Poor access to new policies and technological and chemical innovations was the most important barrier among private firms, highlighting the roles of non-governmental textile and garment industrial/trade associations in enhancing their members’ informative capacity. The study reflects the significance of incorporation of firm behavior research into environmental risk management practice.