Let X be a projective normal toric variety and T0 a rank one subtorus of the defining torus of X. We show that the normalization of the Chow quotient X//T0, in the sense of Kapranov-Sturmfels-Zelevinsky, coarsely represents the moduli space of stable log maps to X with discrete data given by T0 ⊂ X.

This paper is concerned with the oscillatory behavior of first-order delay differential equations of the form x′(t) + p(t)x(τ(t)) = 0, t ≥ t0, (1) where p, τ ∈ C([t0,∞),R),R = [0,∞), τ(t) is non-decreasing, τ(t) < t for t ≥ t0 and limt→∞ τ(t) =∞. Let the numbers k and L be defined by

Let F = F(t, x) be a bounded, Hausdorff continuous multifunction with compact, totally disconnected values. Given any y0 ∈ F(t0, x0), we show that the differential inclusion ẋ ∈ F(t, x)⊂ Rm has a globally defined classical solution, with x(t0)= x0, ẋ(t0)= y0. © 2008 Elsevier Inc. All rights reserved.

Carbon-13 and deuteron spin lattice relaxation times T1 of concentrated solutions of trehalose and sucrose in heavy water are given as function of temperature. From the temperature dependence of the T1 ideal glass transitions temperatures T0 are derived. For both compounds the T0 derived for the disaccharides are at high concentrations larger than the T0 of the water molecules.

Objective To determine whether heart rate recovery (HRR) following an exercise tolerance test (ETT) is correlated with a changing ratio of peak oxygen consumption (VO2) and maximal metabolic equivalents (METmax). Methods A total of 60 acute myocardial infarction (AMI) patients who underwent ETT at both assessment points - 3 weeks (T0) after the AMI attack and 3 months after T0 (T1) were inclu...

The threshold current and the characteristic temperature of 1.3m InGaAsP–InP buried heterostructure (BH) lasers with the p-n-p-n blocking layers have been numerically analyzed using a two-dimensional (2-D) device simulator. The simulation model includes optical gain, intervalence absorption, radiative spontaneous-emission current, Auger recombination current, Shockley–Read–Hall recombination cu...

BACKGROUND Having electronic media in the bedroom is cross-sectionally associated with greater screen-time in children, but few longitudinal studies exist. The aim of this study was to describe longitudinal patterns of ownership and examine cross-sectional and longitudinal associations of bedroom media with children's sedentary behaviour. METHODS Data are from the Sport, Physical activity and...

AIM The effect of two jumping competitions, performed in two consecutive weekends, on serum creatine phosphokinase (CPK), aspartate aminotransferase (AST), and lactate dehydrogenase (LDH), urea, creatinine (CREA) concentrations were evaluated in 12 healthy jumper horses. MATERIALS AND METHODS Blood sampling was performed before the 1(st) day of competition (T0), at the end of each show (J1, J...