Hofer growth of C1C^1-generic Hamiltonian flows

We prove that on certain closed symplectic manifolds a $C^1$-generic cyclic subgroup of the universal cover of the group of Hamiltonian diffeomorphisms is undistorted with respect to the Hofer metric.Comment: 20 page

On the symplectic size of convex polytopes

In this paper we introduce a combinatorial formula for the Ekeland-Hofer-Zehnder capacity of a convex polytope in $\mathbb{R}^{2n}$. One application of this formula is a certain subadditivity property of this capacity

THE WATER ECONOMY OF ISRAEL

Resource /Energy Economics and Policy,

URBAN WATER IN ISRAEL

Resource /Energy Economics and Policy,

Relativistic Causality and Conservation of Energy in Classical Electromagnetic Theory

The change of the electromagnetic field in a particular place due to the event of a change in the motion of a charged particle can occur only after the light signal from the event can reach this place. Naive calculations of the electromagnetic energy and the work performed by the electromagnetic fields might lead to paradoxes of apparent non-conservation of energy. A few paradoxes of this type for a simple motion of two charges are presented and resolved in a quantitative way providing deeper insight into various relativistic effects in the classical electromagnetic theory.Comment: 10 pages, RevTeX

A MODEL OF YIELD VARIABILITY AND PRICE EFFECT

Crop Production/Industries,

WATER MANAGEMENT IN ISRAEL: RULES VS. DISCRETION

Resource /Energy Economics and Policy,