This paper improves the price-performance ratio of ECM, the elliptic-curve method of integer factorization. In particular, this paper constructs “a = −1” twisted Edwards curves having Q-torsion group Z/2× Z/4, Z/8, or Z/6 and having a known non-torsion point; demonstrates that, compared to the curves used in previous ECM implementations, some of the new curves are more effective at finding smal...

Runners are often categorized as forefoot, midfoot or rearfoot strikers, but how much and why do individuals vary in foot strike patterns when running on level terrain? This study used general linear mixed-effects models to explore both intra- and inter-individual variations in foot strike pattern among 48 Kalenjin-speaking participants from Kenya who varied in age, sex, body mass, height, runn...

The Department of the Navyimplemented its present mandatory bird-aircraft strike reporting system in 1981. Reported bird-aircraft strikes have increased each year, presumably due to increased awareness and compliance with regulations. Four Naval air stations implementing birdaircraft strike hazard reduction programs in 1984 reported 57-78% fewer strikes in 1984 than in 1983.

In order for airports to manage the bird strike risk effectively, a risk assessment process needs to be carried out to identify the major hazards at the airport, the levels of risk that they produce, and the most cost effective means of reducing that risk. Despite the fact that bird controllers, managers and consultants make informal bird strike risk assessments throughout their working lives, ...

Postencounter and circa-strike defensive contexts represent two adaptive responses to potential and imminent danger. In the context of a predator, the postencounter reflects the initial detection of the potential threat, whereas the circa-strike is associated with direct predatory attack. We used functional magnetic resonance imaging to investigate the neural organization of anticipation and av...