IA Growing Roots-Concerning the Journal of IA

The Type Ia Supernova

We present the rst measurement of the rate of Type Ia super-novae at high redshift. The result is derived using a large subset of data from the Supernova Cosmology Project as described in more detail at this meeting by Perlmutter et al. (1996). We present our methods for estimating the numbers of galaxies and the number of solar luminosities to which the survey is sensitive, the supernova detec...

Prevalence of aac(3)-IIa, aph(3)-Ia and ant(2)- Ia Genes among Uropathogenic Escherichia Coli Isolates

Abstract Background and Objective: Escherichia coli, one of the most common causative agents of urinary tract infections (UTIs) acquired from community and hospital, has developed multiple resistances to various antibiotics such as aminoglycosides. The main resistance mechanism to aminoglycosides is inactivation of these drugs by a variety of acetyltransferase, nucleotidyltransferase, and phosp...

The Type Ia Supernova Rate

We explore the idea that the Type Ia supernovae (SNe Ia) rate is made up of two components: a prompt piece that is proportional to the star formation rate (SFR) and an extended piece that is proportional to the total stellar mass. We fit the parameters of this model to the local observations of Mannucci and collaborators and then study its impact on three important problems. On cosmic scales, t...

Introducing the IA-64 Architecture

Microprocessors continue on the relentless path to provide more performance. Every new innovation in computing—distributed computing on the Internet, data mining, Java programming, and multimedia data streams—requires more cycles and computing power. Even traditional applications such as databases and numerically intensive codes present increasing problem sizes that drive demand for higher perf...

The IA-32 processor architecture