Why Do Dancers Smoke? Smoking, Time Preference, and Wage Dynamics

Time preference is a key determinant of investments in human capital and occupational choice. Individuals with higher discount rates are less likely to invest in human capital and hence more likely to select into careers with lower and flatter earnings profiles. Since discount rates are unobservable, we use smoking behavior as a proxy to study the effect of discounting on wage dynamics. We find that smokers, compared to non-smokers, earn lower wages at the time they enter the labor market and experience substantially lower rates of wage growth. These differences are consistent with the discounting hypothesis, and highly robust to an extensive array of control variables.

Energy issues in the developing world

In 1986 and 1987 the lower oil prices called into question many of the fundamental assumptions that were the stock in trade of energy experts during the previous ten years. This document is a collection of papers representing responses to concerns prepared by current and former World Bank staff. Although these papers raise a variety of different concerns, a common theme that runs throughout the paper is the need to continue the pursuit of efficiency goals in the energy sector. The developing world still needs large amounts of capital to meet its ever-expanding energy requirements. These capital requirements will be a significant part of most countries'total investment plan. Given the problems of debt and public revenues, the report concludes that the pursuit of efficiency is just as important under lower fuel prices as it is under rising fuel prices.Power&Energy Conversion,Urban Environment,Environmental Economics&Policies,Energy Demand,Energy and Environment

A review of World Bank lending for electric power

This paper presents the result of an evaluation of about 300 power projects financed by the World Bank and IDA between 1965 and 1983. The study shows a declining trend in power sector performance in spite of Bank involvement in the sector. It recommends greater emphasis on : improving productive and allocative efficiency; increasing incentives for enhanced utility efficiency; strengthening of power-energy-macroeconomic linkages; improving investment planning to achieve a better balance between generation and distribution, and giving greater emphasis to rehabilitation and maintenance. Sector restructuring and institutional reform is also recommended to improve the social compact between government, consumers and the electric utility.Banks&Banking Reform,Environmental Economics&Policies,Economic Theory&Research,Health Monitoring&Evaluation,Business Environment

Influence of light on diurnal behaviour of Carangids in the Wadge Bank trawl fishery

Adequate data on the Wadge Bank fishery relating to several groups of fish, including Carangids, taken in bottom trawls are available for study. Analysis of this data indicated that the variation in Carangid catches was related to the time of day. In this paper, the available Wadge Bank fishery data is analysed and discussed to show the diurnal changes in Carangid catches and the probable influence of light in affecting these changes

The Pearl Banks inspection: April, 1970

The last major pearl fishery in the Gulf of Mannar was held in February-March, 1958, when about 4.5 million oysters were collected from the south-west Cheval Paar by dredging. (Sivalingam 1961). Subsequently, two smaller fisheries, one in 1960 and another in 1961 took place. In these two fisheries one million oysters and four hundred thousand oysters respectively were collected from the Cheval paar by dredging. (De Fonselm 1953). Inspections of the Banks were carried out in 1962, 1963, 1964 and 1965. (Balasuriya 1964 and Silva 1965 and 66). Since then inspections were not possible due to one of two reasons or both the non-availability of operational dredges and a suitable vessel for this type of work.The "Pesalai" a 235-ton stern trawler was made available by the Ceylon Fisheries Corporation management for the 1970 inspection. Two new 6-foot dredges turned out by the Government Factory were also available for this work. However, the survey was limited to 3 days-the period for which the vessel had been released. It was further limited to those areas of the banks over 6 fathoms in depth because of the risk in operating a large vessel in shallower depths

Evaluation of stern trawler operation in the Wadge Bank for economic exploitation of its demersal fish resources

The records of the exploitation of demersal fish resources by trawlers during the past two decades indicated a decline in productivity and uneconomical fishing operations. The possible reasons for the decline can be deduced by analysis of the fishing records of trawlers that have fished in the banks. Such an analysis can also provide a basis for planned management in the exploitation of demersal stocks of fish. This paper attempts to provide such a basis for the Wadge Bank