Learn More
Implementing new operating systems is tedious, costly, and often impractical except for large projects. The Flux OSKit addresses this problem in a novel way by providing clean, well-documented OS components designed to be reused in a wide variety of other environments , rather than defining a new OS structure. The OSKit uses unconventional techniques to(More)
Now completing its first year, the High-Performance Knowledge Bases Project promotes technology for developing very large, flexible, and reusable knowledge bases. The project is supported by the Defense Advanced Research Projects Agency and includes more than 15 contractors in universities , research laboratories, and companies. The evaluation of the(More)
Spatiotemporal patterns of gene expression are fundamental to every developmental program. The resulting macroscopic domains have been mainly characterized by their levels of gene products. However, the establishment of such patterns results from differences in the dynamics of microscopic events in individual cells such as transcription. It is unclear how(More)
BACKGROUND Catheter ablation is an established treatment for atrial fibrillation (AF). Cryoballoon ablation (CBA) has emerged as an alternative to radiofrequency ablation (RFA). However, there are few data comparing these modalities for treatment of paroxysmal AF (pAF) in the U.S. POPULATION The purpose of this study was to compare procedural times,(More)
BACKGROUND Knee arthroscopies are among the most common procedures performed by orthopaedic surgeons, yet little is known about the associated complications and complication rates. PURPOSE To examine the nature and frequency of complications after the most common arthroscopic knee procedures, with particular attention to fellowship training, geographic(More)
INTRODUCTION Recently, a medical advisory was issued regarding the Riata and Riata ST silicone endocardial defibrillator leads (St. Jude Medical, Sylmar, CA, USA) addressing the issue of conductor cables extruding in an "inside-out" fashion from the main body of the lead. However, little data exist to guide our management of patients with these leads. (More)
BACKGROUND The purpose of this study was to compare the spatial resolution of activation mapping and pacemapping in patients undergoing ablation of idiopathic ventricular tachycardia (VT) arising from the right ventricular outflow tract (RVOT). A direct comparison of the two techniques has not been undertaken. METHODS AND RESULTS Electroanatomical(More)
Carbon Nanotube Field-Effect Transistors (CNFETs) can potentially provide significant energy-delay-product benefits compared to silicon CMOS. However, CNFET circuits are subject to several sources of imperfections. These imperfections lead to incorrect logic functionality and substantial circuit performance variations. Processing techniques alone are(More)
BACKGROUND Prophylactic implantable defibrillators (ICDs) improve survival in patients with impaired ventricular function after myocardial infarction (MI), but it is uncertain whether mortality risk and survival benefit depend on the elapsed time from MI. METHODS AND RESULTS The Multicenter Automatic Defibrillator Implantation Trial II examined the impact(More)