Showing papers by "Indian Institute of Management Bangalore published in 1976"

An optimization model for determining headways for transit routes

Abstract: The paper presents a technique for determining headways for transit routes, which is the first task in the overall scheduling procedure. Based on an optimization approach, a chance constrained programming model is developed. The scope of using vehicles of different sizes and operating costs is built into the model, which attempts to minimize the total operating cost. The uncertainty associated with demand forecasts is expressed as a chance constraint that specifies the desired level of reliability with respect to the satisfaction of demand. The model also includes a constraint related to the management policy regarding the minimum service to be provided on a transit route. The deterministic equivalent of the model is solved by linear programming and its application is demonstrated with an example problem. This report was prepared as part of a program of Research and Training in Urban Transportation at Marquette University sponsored by the Urban Mass Transportation Administration of the U.S. Department of ...

Data sources on income distribution in Bangladesh, India, Pakistan and Sri Lanka: an evaluation

Abstract: This paper examines the data base available in four South Asian countries, India, Pakistan, Bangladesh, and Sri Lanka, for the examination of trends in real inequality and poverty. Taking the position that sample surveys of household income and consumption are the only really adequate bases on which size distributions of income for a less developed country can be constructed, the paper examines in Section I the reliability of the surveys available in the four countries. Section II evaluates available price data. Section III looks at directions for future development of data collection. The conclusion is reached that sample surveys regularly conducted in these countries do not provide a particularly good basis for this type of analysis. Needed alterations include permitting access to the primary data (or redesign of published tabulations to meet the needs of this type of analysis), use of per capita rather than total household income and consumption, better coverage of regions and occupations, and exploitation of the price data implicit in the survey data collected. Further, the surveys themselves need to be overhauled, especially with regard to timing of interviews. The paper concludes with a short discussion of alternatives to estimates of inequality that can be used to measure absolute deprivation, such as the QUAC stick for identifying nutritional insufficiency.