Characterisation and Diagnosis of Rural—Urban Interface Farming in the Tu Liem and Thanh Tri Districts of Hanoi City,Vietnam

A research project was carried out in two areas in the outskirts of Hanoi city using a combination of qualitative and quantitative methods. The objective was to study interactions among the vegetable farming systems and the peri-urban context within which they are situated. The farms studied were characterised as small-scale farms that use high inputs of soil amendments and pesticides for diversified crop rotation systems. The main source of irrigation water and nutrients for vegetable farming in southern Hanoi is wastewater from the To Lich River. In northern Hanoi, irrigation water is obtained directly from the Red River and nutrients are supplied through high fertiliser inputs. The concentrations of COD (144–287 mg l^?1), N-NH₄ ⁺ (1–25 mg l^?1), PO₄ ^3? (0.5–4 mg l^?1) and coliform (525 × 10³?28 × 10⁶ MPN 100 ml^?1) along the To Lich River was much higher than the limits specified in the Vietnamese standard for water used in agriculture. A higher Cu content in soil in Phuc Ly seems to be linked to the high input of chicken manure at the site. However, the contents of heavy metals in irrigation water, in vegetables and in the soil surface layer at the two sites were lower than the Vietnamese maximum permissible levels.     

Poverty identification: practice and policy implications in Vietnam

To identify poor households, the government of Vietnam applies a combination of proxy means tests and quick collection of income data. This paper examines how well the government's poverty identification reaches the really poor in Vietnam. It is found that there is a large difference between the poverty rate for provinces and districts reported by the government and the rates estimated using expenditure and income data from independent household surveys. There is also a large difference between the poverty status of households identified by local authorities and the poverty status identified by income or expenditure data. More than 50 per cent of the poor households identified by local authorities are not poor in terms of income or expenditure measures. A better identification approach would be to use only proxy means tests and not income data collected using the simple questionnaire.     

Measuring Uncertainty for New Zealand Using Data‐Rich Approach

This paper develops two state‐of‐the‐art uncertainty indices for New Zealand by exploiting two separate data‐rich environments. The first index follows the methodology outlined in Jurado, Ludvigson and Ng (2015) to construct an estimate of uncertainty based on a large New Zealand macro dataset. The second index is constructed based on freely accessible and real time Google Trends data to provide a real‐time and freely‐accessible measure of uncertainty as in Castelnuovo and Tran (2017) and Shields and Tran (2018). Both indices do a reasonable job measuring uncertainty in New Zealand. VAR evidence documents significant impacts of uncertainty shocks on GDP in New Zealand.     

Seatbelt and child restraint use among vehicle occupants in Ho Chi Minh City: an observational study in Vietnam

Abstract

This paper presents the trend of seatbelt use, disaggregated by vehicle occupants, in Ho Chi Minh City between 2016 and 2018. We conducted statistical analyses to identify the determinants of seatbelt use, including the effect of a new fine imposed against seatbelt law violation in the rear seats that became effective in January 2018. Seatbelt use was observed in at least half of all vehicle occupants, and drivers were more likely to use seatbelts than passengers. Only 4.4% of children younger than 5-years and 2.5% of 5 to12-year-olds used a child restraint system. Seatbelt use increased among all occupants after the imposed fine, especially among rear-seat passengers. Imposing new or increasing fixed penalties, with enforcement and public education, may increase seatbelt use to prevent road traffic injuries.     

Hoglex Demand Systems and Welfare Policy in Major Asean Developing Countries: A Bayesian Analysis Using Expenditure Unit Records

The HOGLEX demand system (Tran Van Hoa (1983, 1985)) is integrable and flexible in the sense that it is based on utility maximization and encompasses most other well-known demand systems (e.g., LINEX, AIDS) in the literature on consumer behaviour (Laitinen et al. (1983)). HOGLEX studies to date have been based on conventional OLS or MLE methods and panel aggregate income and price data, and restricted to investigating consumption patterns. The paper elaborates on three important subsets of the HOGLEX demand system and, using household expenditure unit records from two major ASEAN developing countries (i.e., Thailand and the Philippines), estimates by the Bayesian method these subsets for 20 socio-demographic cohorts, and discusses their substantial implications in social security and welfare policy analysis. We also estimate the models in the more practical case of measurement errors in total expenditure and compare the results with those without measurement errors.

     

A divisia system approach to modelling monetary aggregates

A complete system of Divisia partial adjustment asset equations based on the augmented-price expectations Baumol-Tobin inventory and transactions postulates is used to study the dynamic behaviour of monetary aggregates and their components in Australia during 1969.III to 1983.IV. The system provides a new and useful approach to modelling demand-for-money functions for effective monetary policy controls and targetting.     

Firm agglomeration and local poverty reduction: evidence from an economy in transition

We examine the linkages between firm agglomeration and the welfare of households in Vietnam. We measured firm agglomeration by per capita firm output at the district level and household welfare by per capita income, expenditure, and poverty. We find that firm agglomeration helps households move from the informal sector to the formal sector. As a result, there is a positive effect of firm agglomeration on per capita income, per capita expenditure, and poverty reduction, albeit of a small and time‐decreasing magnitude. The effect of firm agglomeration on per capita expenditure tends to be higher for households with men, younger, and more educated heads than households with women, older, and less educated heads. Households in rural areas and those that do not have crop land are more likely to benefit from firm agglomeration than those living in urban areas and having crop land.     

Does Peacetime Military Service Affect Crime?

Draft lottery data combined with Danish longitudinal administrative records show that military service can reduce criminal activity for youth offenders. For this group, property crime is reduced, and our results indicate that the effect is unlikely to be the result of incapacitation only. We find no effect of military service on violent crime, on educational attainment, or on employment and earnings, either in the short run or in the long run. These results suggest that military service does not upgrade productive human capital directly, but rather affects criminal activity through other channels (e.g., by changing attitudes to criminal activity).     

Corporate tax cuts,merger activity,and shareholder wealth

We study the impact of the Domestic Production Activities Deduction (DPAD) on mergers and acquisitions. DPAD reduces corporate tax rates on income from work or goods made in the U.S. Results indicate that the quantity and quality of acquisition bids by DPAD-advantaged firms conform to the predictions of the neoclassical theory of the firm and the theory of financial constraints. Specifically, bids, particularly those cash-financed, increase substantially in industries with large DPAD-related tax cuts and for firms with financial constraints. Moreover, DPAD improves acquisition quality where acquirers and targets are likely to generate incremental DPAD tax benefits through their merger.