PURPOSE To determine the relationship between retinal image movement (RIM) and oscillopsia in subjects with idiopathic congenital nystagmus (CN). METHODS Eye movements were recorded using an IRIS infrared system. The eye movement signal was fed back to move an otherwise stationary target on a screen and thereby modify the RIM experienced by each of the five CN subjects. The target was present...

Camera self-calibration is an important task in computer vision. In the literature, if the aspect ratio is known, people need additionally zero-skew-assumption to generate a constraint on the image of the absolute conic for camera calibration. However usually camera skew is nonzero and unknown. In this paper, a new quadric constraint on the image of the absolute conic is introduced, which is so...

The transition rate for a single hop of a charge carrier in a semiconducting polymer is assumed to be thermally activated. As the temperature approaches absolute zero, the predicted conductivity becomes infinitesimal in contrast to the measured finite conductivity. Here we present a uniform description of charge transport in semiconducting polymers, including the existence of absolute-zero grou...

Received ; accepted – 2 – ABSTRACT Element-by-element we have combined the optical components in the three 2MASS cameras, and incorporated detector quantum efficiency curves and site-specific atmospheric transmissions, to create three relative spectral response curves (RSRs). We provide the absolute 2MASS attributes associated with " zero magnitude " in the JHK s bands so that these RSRs may be...

Towner et al. [1] question the methods and the theoretical framework of our study of behavioural variation among Native American tribes of Western North America [2]. Here we show that their concerns are unfounded and that our results are robust. We also clarify the theoretical issues that motivated our paper, and explain why it is critical to disentangle the role of ecology and cultural inherit...

I review statistical parallax absolute magnitude determinations which employ data from the Hipparcos satellite for RR Lyrae and Cepheid variables, and for several other stellar classes. Five groups have studied the RR Lyrae stars, and the results are reassuringly consistent: MV (RR) = 0.77 ± 0.13 mag at [Fe/H] = –1.6 dex. Extensive Monte Carlo simulations showed that systematic errors are small...

Data Type – Each value is some data object – Operations are implemented separately in a generic module – Same module shared by all the values belonging to each type Object-Oriented Approach DoubleRing := proc(val::float) local Me; Me := module() export v, a, s, m, d, gt, zero, one, coerce, absolute, sine, sqroot; v := val; # Data value of object # Implementations for +, -, *, /, >, etc a := (b)...

In this paper we establish three results on small-height zeros of quadratic polynomials over Q. For a single quadratic form in N ≥ 2 variables on a subspace of Q , we prove an upper bound on the height of a smallest nontrivial zero outside of an algebraic set under the assumption that such a zero exists. For a system of k quadratic forms on an L-dimensional subspace of Q , N ≥ L ≥ k(k+1) 2 + 1,...

We study two quantitative models of information leakage in the pi-calculus. The first model presupposes an attacker with an essentially unlimited computational power. The resulting notion of absolute leakage, measured in bits, is in agreement with secrecy as defined by Abadi and Gordon: a process has an absolute leakage of zero precisely when it satisfies secrecy. The second model assumes a res...

Electrons in conductors at finite nonzero temperatures produce measurable voltages due to thermal noise, even if the conductor is not driven by any other external voltage. The thermal noise voltage, called Johnson noise, is posited to depend only on the frequency width of the signal, as well as the temperature and resistance of the material. From the measurement of Johnson noise voltages for re...