Regulation of relationships between heterogeneous farmers and an aquifer accounting for lag effects

Many environmental problems are due to damage caused by pollutants that accumulate with a time lag following their emission. In this study, we focus on nitrates used in agriculture, which can pollute groundwater many years after their initial application. A dynamic optimal control problem with heterogeneous farmers is proposed. The usual structural parameters such as the discount rate, the natural clearing rate and the lagged time interval between the occurrence of soil‐level pollution and the impact on groundwater are taken into account. We also examine pollution as caused by a continuous set of farms characterised by their individual performance index and by their individual marginal contribution to the pollution. The issue is further investigated by taking account of change in the information context, successively related to perfect information and to asymmetric information. As a result, when the delay between the spreading of N‐fertilizer and the impact on the aquifer increases, that is, the longer the lag, the steady‐state pollution stock and the steady‐state shadow price of the stock both increase. Moreover, we show that the optimal regulation may require a decreasing amount of fertilizer over time, even in the case of initial underpollution.     

Why do financial systems differ? History matters

We describe a dynamic model of financial intermediation in which fundamental characteristics of the economy imply a unique equilibrium path of bank and financial market lending. Yet we also show that economies whose fundamental characteristics have converged may continue to have very different financial structures. Because setting up financial markets is costly in our model, economies that emphasize bank lending are more likely to continue doing so in the future, all else equal.     

Lease finance in industrial markets

Financial leasing is being used increasingly to acquire items of industrial equipment where use is more crucial than ownership. Its advantages over traditional forms of finance are straightforward and to a large degree appear to be based on the utilization of a cost advantage deriving from the fiscal system. In view of this, it might be expected that price would be a dominant marketing variable since the ‘product’ is relatively homogeneous, even though the industry structure is oligopolistic. This has been the case to a certain extent but policies of product differentiation and market segmentation have enabled firms to avoid some of the rigours of price competition.     

“The everyday accountant and researching his reality”: Further thoughts

It is the contention of this paper that accounting researchers have been dominated in thier research methodology by methods supposedly adopted from the natural sciences. It is argued that it is time that attention was paid to the possible use of radically different “naturalistic” (or “interpretive humanistic”) research approaches in order both to focus research more closely on the concerns of practitioners and to give greater insight into everyday effects of accounting and the practices of accountants themselves.     

A work role perspective of accountants in local government service departments

In most of the largest U.K. local authorities the financial control function is highly centralised with no qualified accountant or controller located in each spending department. There now may be the beginnings of a trend towards employing accountants within service departments. The paper analyses how this new segment of public sector accounting appears to be becoming established, how the role of these accountants is being developed and the contrasting occupational values of accountants in service departments and those in the finance department. It is also shown how the existence of a strong accounting profession in local government can lead to different aspects of both the financial control structure and process in comparison with central government such that research results on the latter may not automatically hold at local level.