Renormalization conditions imposed on quark bilinear vertex functions in the conventional RI/MOM scheme use exceptional momentum configurations. With practical values for the lattice cutoff, these vertex functions are contaminated with unwanted low energy physics (pion pole, zero modes, etc), which is a large source of systematic error. These effects can be reduced by using non-exceptional mome...

This paper attempts to solidify the technical issues involved in the long-standing debate about the representativeness of fault injection as a tool for measuring the dependability of general-purpose software systems. While direct fault injection seems appropriate for evaluating fault tolerant computers, most current software systems are not designed in a way that makes injection of faults direc...

This paper attempts to solidify the technical issues involved in the long-standing debate about the representativeness of fault injection as a tool for measuring the dependability of general-purpose software systems. While direct fault injection seems appropriate for evaluating fault tolerant computers, most current software systems are not designed in a way that makes injection of faults direc...

SUMMARY In this issue of Cancer Discovery, AI-Ahmadie and colleagues identify a somatic mutation in the RAD50 gene as a likely contributing factor to an unusual curative response to systemic combination therapy employing the DNA-damaging agent irinotecan and a checkpoint kinase 1 inhibitor in a patient with recurrent, metastatic small-cell cancer. This study highlights the importance of in-dept...

The genetic architecture of adaptation is fundamental to understanding the mechanisms and constraints governing diversification. However, most case studies focus on loss of complex traits or parallel speciation in similar environments. It is still unclear how the genetic architecture of these local adaptive processes compares to the architecture of evolutionary transitions contributing to morph...

In a host-parasite system, the constitutive interaction among the species, regulated by the growth rates and functional response, may induce populations to approach equilibrium or sometimes to exhibit simple cycles or peculiar oscillations, such as chaos. A large carrying capacity coupled with appropriate parasitism effectiveness frequently drives long-term apparent oscillatory dynamics in popu...

In a host-parasite system, the constitutive interaction among the species, regulated by the growth rates and functional response, may induce populations to approach equilibrium or sometimes to exhibit simple cycles or peculiar oscillations, such as chaos. A large carrying capacity coupled with appropriate parasitism effectiveness frequently drives long-term apparent oscillatory dynamics in popu...