Realization of laterally nondispersing ultrabroadband Airy pulses

We present the measurements of the spatiotemporal impulse response of a system creating nondispersing Airy pulses, i.e., ultrabroadband Airy beams whose main lobe size remains constant over propagation. A custom refractive element with a continuous surface profile was used to impose the cubic phase on the input beam. The impulse response of the Airy pulse generator was spatiotemporally characterized by applying a white-light spatial-spectral interferometry setup based on the SEA TADPOLE technique. The results were compared with the theoretical model and previously spatiotemporally characterized Airy pulses generated by a spatial light modulator. (C) 2014 Optical Society of Americ

Measuring the suppression of ultrashort pulses into Airy-Bessel light bullets with almost single-cycle temporal resolution

We have achieved ∼3 fs and ∼3 μm resolutions for full spatio-temporal characterization of impulse responses of optical systems using a white-light spectral interferometry set-up and demonstrate how a circular diffraction grating temporally focuses an Airy-Bessel wave-packet

The fear of wolves: A review of wolf attacks on humans

Summary Because of the large scales at which large carnivores live, their conservation cannot occur only within protected areas. They must therefore be conserved within multi-use landscapes where conflicts with humans occur. Conflicts are diverse and include depredation on livestock and competition for wild ungulates. However, one of the most serious is the fear of being injured or killed by a large carnivore. Man-killing by tigers, lions, leopards, pumas and bears (brown bear, black bear, polar bear and sloth bear) occurs on a regular basis with hundreds of people being killed annually on a worldwide basis. Although the danger that wolves pose to human safety remains controversial, may people that live in wold range report that they are afraid of wolves. This report attempts to examine the existing data about wolf attacks on humans during the last few hundred years around the world

Tartu Ülikooli Õppe- ja Katsemetskonna Kastre Peravalla metsandike plaanid (kvartalid nr 200-293)

PlaanidTartu Ülikooli Õppe- ja Katsemetskonna Kastre Peravalla metsandike takseerkirjeldused aastatest 1922, 1923. Kvartalite nr 200-293 käsikirjalised originaalplaanid on mõõtkavas 1:2500. Koloreeritud plaanid sisaldavad kvartalite numbreid, leppemärkide seletusi, ilmakaari, graafilist mõõtkava, autorite nimesid. Autorite nimedes võib esineda eksimusi. Loetamatud nimed puuduvad autorite loendis