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Extreme Risks During the U. S. Financial Crisis: An Empirical Study of the Credit Default Swap Market

In this paper we focus on the many extreme credit default swap spread movements observed during the recent credit crisis. We find that the tails of the spread (and price) change distribution differ significantly from those of the normal distribution even for diversified credit derivatives portfolios. Particular focus is put on the sudden shift in the behavior of the credit default swap market in t

A chip for linearization of RF power amplifiers using predistortion based on a bit-parallel complex multiplier

This paper presents a custom chip for linearization of RF power amplifiers using digital predistortion. The chip has been implemented in a standard digital 0.8 mu m CMOS process with standard static cells and single-phase clocking. A systolic complex multiplier based on distributed arithmetic constitutes the core of the chip. The nonlinear function is realized with a look-up table containing compl

In diabetic eyes, multifocal ERG reflects differences in function between the nasal part and the temporal part of the macula.

PURPOSE: The purpose of the present study was to compare retinal function between the perifoveal nasal and perifoveal temporal areas of diabetic eyes using multifocalERG (mfERG). METHODS: We included 36 eyes from 27 patients with diabetes (age 58 ± 14 years; duration of diabetes 13 ± 9 years; HbA(1c) 7.1 ± 1.8%) and a control group with 18 eyes from 18 healthy subjects (age 57 ± 11 years). Retin

Heparin-binding protein: a diagnostic biomarker of urinary tract infection in adults.

Urinary tract infections (UTIs) are associated with significant morbidity and high frequency of antibiotic prescription. Diagnosing UTI is often difficult, particularly in the critically ill patient and in patients with unspecific and mild symptoms. The standard rapid tests have limited value, and there is a need for more reliable diagnostic tools. Heparin-binding protein (HBP) is released from ne