Close-range remote sensing of Saturn’s rings during Cassini’s ring-grazing orbits and Grand Finale

Close-range remote sensing of aquatic macrophyte vegetation cover

This study used ground-based hyperspectral radiometry to examine variations in visible and near-infrared spectral re ectance of spatterdock (Nuphar polysepalum Engelm.) as a function of vegetation cover. Sites were sampled in Swan Lake in Grand Teton National Park, Wyoming, using a 512-band spectroradiometer to measure re ectance over the range 326.5–1055.3nm (visible-nearinfrared) and simult...

Grand Orbits of Integer Polynomials

Let K be a number field and set R = OK , the ring of integers in K. We determine all polynomials f ∈ R[X] and all α ∈ R for which the grand orbit {β ∈ K : f(β) = f(α) for some n,m ≥ 0} contains infinitely many elements of R which are not in the forward orbit {f(α) : n ≥ 0}.

Remote Sensing Estimation of Forest Lai in Close Canopy Situation

This study attempts to find a new and better approach to estimate forest LAI in fully closed canopy condition. Although there have been many previous studies to estimate LAI using optical remote sensor data, there are not enough evidences whether the red and near-IR reflectance are still effective to estimate forest LAI in closed canopy situation. In this study, we have conducted a simple corre...

Remote-sensing and tree-ring based characterization of forest

Ring structures of mod p equivariant cohomology rings and ring homomorphisms between them

In this paper, we consider a class of connected oriented (with respect to Z/p) closed G-manifolds with a non-empty finite fixed point set, each of which is G-equivariantly formal, where G = Z/p and p is an odd prime. Using localization theorem and equivariant index, we give an explicit description of the mod p equivariant cohomology ring of such a G-manifold in terms of algebra. This makes ...