Krishna Challa

Learn More
  • 1998
carefully and patiently prepared several drafts and the cover for this paper. The findings, interpretations, and conclusions expressed in this paper are entirely those of the author(s) and should not be attributed in any manner to the World Bank, to its affiliated organizations, or to members of its Board of Executive Directors or the countries they(More)
In January 2000 Ecuador announced that it would dollarize fully, in response to an unprecedented crisis encompassing recession, widespread bank failures, and incipient hyperinflation. The crisis had intensified since early 1998, when a combination of external and climatic shocks set it off. The economy's semi-dollarization made the crisis far worse than it(More)
Acknowledgement This paper is a product of the Private and Financial Sector Development Department, Europe and Central Asia Region (ECSPF). The paper was sponsored by the Debt Market Thematic Group in the Finance Sector Vice Presidency (FSEVP) of the World Bank, as part of the preparation of a Manual on Domestic Debt Markets Development – The Policy Issues.(More)
A system Is presented that combines the automated planning and. optimization functions in machining processes. The planning function is performed by a systematic analysis of the stated requirements of the finished part in the light of information on available machining facilities and raw materials. The optimization phase utilizes a mathematical programming(More)
ACKNOWLEDGEMENT We would like to express our most sincere gratitude to the inspiration and guidance we got during the entire course of this work from Professors Paul MacAvoy and Robert Pindyck. We also owe a special thanks to Kevin Lloyd and Phil Sussman for their help. ABSTRACT This paper attempts to provide a unified framework that takes into account(More)
Taking into consideration of the biological activity of betulinic acid derivatives containing a oxadiazole ring, the semisynthetic betulinic acid-1,2,4-oxadiazole esters (14-25) were synthesized starting from betulinic acid (1) and 5-(bromomethyl)-3-aryl-1,2,4-oxadiazoles (2-13) and final compounds were tested for cytotoxic activity on three human cancer(More)
An econometric model is developed to explain 'the investment in exploratory activity and the resulting accumulation of proved reserves of oil and natural gas in the continental United States. The model explicitly takes into account therole of geological uncertainty as well as the effect of depletion in the context of a finite resource base. The model for(More)
  • 1