John Sampson Toll

Jack Sampson Research Statement

Research Overview For several decades, improvements to CMOS process technologies fueled rapid growth in processor performance and throughput. Recently, however, power limitations have radically altered performance scaling for single-threaded applications, and the number of cores per processor has lagged behind the historical rate of transistor increase. This transition leaves architects with fa...

Sampson: Economic and Social Implications

For several years there has been tension between contrasting visions of the future of enterprise computing: the so-called integrated suite versus best-of-breed strategies, championed respectively by Oracle and IBM. Commonly, this conflict has been seen as a matter purely of technical efficiency and relative cost; but it is much more. Whether one approach or the other is destined to prevail is a...

Joshua N Sampson

Guaranteed Ellipse Fitting with the Sampson Distance

When faced with an ellipse fitting problem, practitioners frequently resort to algebraic ellipse fitting methods due to their simplicity and efficiency. Currently, practitioners must choose between algebraic methods that guarantee an ellipse fit but exhibit high bias, and geometric methods that are less biased but may no longer guarantee an ellipse solution. We address this limitation by propos...

Implantation versus infiltration: the Sampson versus the endometriotic disease theory.

It has been assumed that endometriosis is a progressive disease, with growth and development of lesions being inevitable once the disease has started. The implantation and the metaplasia theories describe the mechanism of initiation of endometriotic lesions, but do not explain the different clinical manifestations of endometriosis. To explain the variable expression, growth and development of l...