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#### Existence and Nonexistence Results for a Class of Quasilinear Elliptic Systems

(2007-12-17)

Using variational methods, we prove the existence and nonexistence of positive solutions for a class of -Laplacian systems with a parameter.

#### Constant-sign solutions of a system of integral equations with integrable singularities

(2007-06-22)

We consider the following systems of Fredholm integral equations and the system of Volterra integral equations where the nonlinearities fi, 1 ≤ i ≤ n may be singular in the independent variable and may also be singular at ...

#### Existence to singular boundary value problems with sign changing nonlinearities using an approximation method approach

(2007-04)

This paper studies the existence of solutions to the singular boundary value problem
{−u′′=g(t,u)+(h,u),t∈(0,1),u(0)=0=u(1),
{−u″=g(t,u)+(h,u),t∈(0,1),u(0)=0=u(1),
, where g: (0, 1) × (0, ∞) → ℝ and h: (0, 1) × [0, ∞) ...

#### Philos-type oscillation criteria for second order half-linear dynamic equations on time scales

(2007)

In this paper we establish some oscillation theorems for the second order half-linear dynamic equation (r(t)(x Δ(t) γ) Δ + p(t)x γ(t) = 0, ∈ [a,b], on time scales. Special cases of our results include some well-known ...

#### Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at sNN=200GeV

(2007-04-16)

Differential measurements of elliptic flow (v2) for Au+Au and Cu+Cu collisions at sNN=200GeV are used to test and validate predictions from perfect fluid hydrodynamics for scaling of v2 with eccentricity, system size, and ...

#### System size and energy dependence of jet-induced hadron pair correlation shapes in Cu+Cu and Au+Au collisions at sNN=200 and 62.4 GeV

(2007-06-04)

We present azimuthal angle correlations of intermediate transverse momentum (1-4GeV/c) hadrons from dijets in Cu+Cu and Au+Au collisions at sNN=62.4 and 200 GeV. The away-side dijet induced azimuthal correlation is broadened, ...