Imposing regularity conditions on a system of cost and factor share equations

Systems of equations comprising cost functions and first-order derivative equations are often used to estimate characteristics of production technologies. Unfortunately, many estimated systems violate the regularity conditions implied by economic theory. Sampling theory methods can be used to impose these conditions globally, but these methods destroy the flexibility properties of most functional forms. We demonstrate how Bayesian methods can be used to maintain flexibility by imposing regularity conditions locally. The Bayesian approach is used to estimate a system of cost and share equations for the merino wool-growing sector. The effect of local imposition of monotonicity and concavity on the signs and magnitudes of elasticities is examined.     

UNDERSTANDING MEMBER CHARACTERISTICS AND COOPERATIVE PRICE EFFECTS: THE CASE OF THE ARGENTINEAN DAIRY SECTOR

Since the 1990s, Argentinean dairy‐processing cooperatives have lost considerable amounts of members and market share. We analyse their current role by investigating the characteristics of farmers who continue delivering to them and price differentials between cooperatives and investor‐oriented firms (IOFs). A probit regression model applied to 917 farmers suggests that cooperative farmers are more disadvantaged than farmers delivering to IOFs in terms of education, farm size and productive technology. Moreover, t‐tests applied to data representing 70 per cent of national volume indicate that farmers delivering to cooperatives are between 11 per cent and 29 per cent smaller than those delivering to IOFs, depending on province. A hierarchical multilevel regression model applied to 9,720 transactions among farmers and processors shows that, after controlling for quantity and quality, cooperatives pay lower (3.5%) but more stable prices than IOFs. In a context of rapid structural change, we observe a market in which larger farmers deliver to IOFs and smaller farmers deliver to cooperatives and conclude that, at the expense of paying lower prices, cooperatives may act as buyers of last resort for otherwise disadvantaged farmers.     

Ontology-based e-assessment for accounting: Outcomes of a pilot study and future prospects

This article reports on a pilot of a novel ontology-based e-assessment system in accounting that draws on the potential of emerging semantic technologies to produce an online assessment environment capable of marking students’ free-text answers to questions of a conceptual nature. It does this by matching their response with a “concept map” or “ontology” of domain knowledge expressed by subject specialists. The system used, OeLe, allows not only for marking, but also for feedback to individual students and teachers about student strengths and weaknesses, as well as to whole cohorts, thus providing both a formative and a summative assessment function. This article reports on the results of a “proof of concept” trial of OeLe, in which the system was implemented and evaluated outside its original development environment (an online course in education being used instead in an undergraduate course in financial accounting. It describes the potential affordances and demands of implementing ontology-based assessment in accounting, together with suggestions of what needs to be done if such approaches are to be more widely implemented.     

Ontology-based e-Assessment for Accounting Education

Abstract

This summary reports on a pilot of a novel, ontology-based e-assessment system in accounting. The system, OeLe, uses emerging semantic technologies to offer an online assessment environment capable of marking students' free text answers to questions of a conceptual nature. It does this by matching their response with a ‘concept map’ or ‘ontology’ of domain knowledge expressed by subject specialists. This article describes the potential affordances and demands of ontology-based assessment and offers suggestions for future development of such an approach.     

The regional effects of Indonesia's oil and gas policy: options for reform

This paper analyses the effects on the regions of Indonesia's fuel policy. It discusses how the sharing of oil and gas revenue and taxes between the centre and the regions affects the sub-national fiscal position, and examines the distribution of fuel subsidies across regions. The paper also examines the recent proposals to discontinue subsidising gasoline for private vehicles or to eliminate fuel subsidies altogether, and shows how the regions would be affected if these suggestions were adopted. We argue that the proposals would increase efficiency and equity and should therefore be implemented.     

Does School Lunch Fill the “SNAP Gap” at the End of the Month?

This article investigates the relationship between the timing of Supplemental Nutrition Assistance Program (SNAP) benefit payments and participation in school lunch and breakfast using the National Household Food Acquisition and Purchase Survey. An event study approach examines participation over the five‐day window before and after the SNAP payment. We find that school lunch participation decreases by 17–23 percentage points immediately after the SNAP payment among 11–18 year olds while breakfast drops by 19–36 percentage points. The decline begins the day prior to payment. We find no effects for 5–10 year olds. Models examining participation over the full SNAP month using individual fixed effects yield similar findings. Among teenagers, participation in school lunch and breakfast decline in the first two weeks of the SNAP month, increasing afterward. Non‐school meals show the opposite pattern. Overall, results indicate SNAP households rely more on school lunch and breakfast toward the end of the SNAP month.     

The structural effect of cooperatives on price volatility in the European dairy sector

Theoretical models and empirical evidence suggest that high market shares of cooperatives can force investor-oriented firms to pay higher producer prices within a region. In the same vein, cooperatives may force investor-oriented firms to reduce price volatility. We use panel data from 27 European Union member states over the period 2001–2015 to investigate how the market share of cooperatives in a country affects milk price volatility. Our key finding is that a higher market share of cooperatives reduces price volatility at the national level. Volatility is influenced by a number of other variables, such as fluctuation in raw milk production, oil price volatility spillover and the number of dairy processors. Policymakers should consider that the promotion of cooperatives might positively affect price stability in the dairy sector.     

HOUSING INFORMALITY IN THE GLOBAL SOUTH: Insights from a Policy Comparison between Accra and Buenos Aires

Informal settlement growth in various countries has led to distinctive actions that enhance low-income populations’ accessibility to adequate, safe and affordable housing and basic services. This trend indicates the need for comparative studies between countries and cities to understand the factors that lead to policy learning opportunities. We conducted an experimental comparison between Accra, Ghana, and Buenos Aires, Argentina, to understand, first, how policies on informal settlements have been formed, and secondly, what inquiries should be made to address housing informality in the global South. A comparison shows that these cities/countries have shared moments of neoliberalization and that their poor residents have experienced similar struggles regarding housing availability and the pursuit of extensive governmental interventions. Therefore, their experiences are worth examining. Our comparison indicates that first, Buenos Aires/Argentina has adopted more inclusive policies regarding informal dwellers than Accra/Ghana, and secondly, that diversifying housing solutions are an inevitable dynamic in cities/countries experiencing a surge in housing pressure across classes, races and geographies. In this article we articulate how the governments of these countries have dealt with these challenges and conceptualize the coproduction needs of housing informality in developing countries. We encourage policymakers facing informality in the South to respond to the questions we raise about facilitating policy learning.