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Key aspects of the expression of long-term potentiation (LTP) and long-term depression (LTD) remain unresolved despite decades of investigation. Alterations in postsynaptic glutamate receptors are believed to contribute to the expression of various forms of LTP and LTD, but the relative importance of presynaptic mechanisms is controversial. In addition,(More)
This report, Moody's 13th annual corporate bond default study, extends our default research to cover the period from 1920 through 1999. Highlights from this year's study include: • Worldwide, a record 106 Moody's-rated issuers defaulted on $35.6 billion of long-term, publicly held corporate and sovereign debt in 1999. Including unrated defaulters brings the(More)
This technical report is a product of the National Aeronautics and Space Administration (NASA) Software Program, an agency wide program to promote continual improvement of software engineering within NASA. The goals and strategies of this program are documented in the NASA software strategic plan, July 13, 1995. Additional information is available from the(More)
This report documents global corporate credit rating transition and default rates during the 1995-2003 period conditional on the full information in Moody's published credit opinions, which, in addition to the current credit rating, include prior rating actions and current rating outlooks and reviews. The primary findings of this study are: • Moody's rating(More)
This study introduces a new model for predicting future default rates. The model leverages off of the statistical relationships underlying Moody's trailing 12-month issuer-based default rate — a widely monitored indicator of corporate credit quality — to offer a superior alternative to previous forecasting techniques. The model incorporates the effect on(More)
In more than 50% of all cases, Moody's rates companies' bank loans higher than the bonds it rates for the same issuer. This " rating spread " indicates, in part, our opinion that the loans will be worth more in the event of a default, than the bonds. In our earlier study of bank loan recoveries (Defaulted Bank Loan Recoveries, Moody's Special Report, Nov.(More)