We report an investigation to determine the topology of an arbitrary network of video cameras observing an environment. The topology is learnt in an unsupervised manner by temporal correlation of objects transiting between adjacent camera viewfields. We extract this information in two steps, firstly identifying the principal entry and exit zones associated with each camera view, and then establ...

The following study presents a shorted form of the selected chapters of a disserta-tion part dealing with the Czech electro-acoustic music (hereinafter referred to as EAM). 1 The study is in particular engaged in the information available or interpreta-ble to foreign researchers only with difficulties. Basic typology For our purposes, EAM may be specified as a music the sound material of which ...

In the semi-arid rangelands of north central Kenya, the abundance of grasses has declined over recent decades. Concomitantly, the native succulent herb Sansevieria volkensii has greatly proliferated in many areas. Landscape structure has thus shifted from contiguous herbaceous cover to large, dense stands of S. volkensii with interpatches of bare or sparsely vegetated ground. Local pastoralists...

Dynamic actin network at the leading edge of the cell is linked to the extracellular matrix through focal adhesions (FAs), and at the same time it undergoes retrograde flow with different dynamics in two distinct zones: the lamellipodium (peripheral zone of fast flow), and the lamellum (zone of slow flow located between the lamellipodium and the cell body). Cell migration involves expansion of ...

Classified remotely sensed data serves as the basis for various types of city models. Since the requirements concerning the correctness of these models are rapidly growing, the demands for a significant assurance of their quality increase as well. Standard methods for the a posteriori evaluation of classified data have successfully been applied but they do not fully meet the requirements result...

A risk assessment of vegetation zone responses to climate change was conducted using the classical Holdridge life zone model on the Loess Plateau of Northwest China. The results show that there are currently ten vegetation zones occurring on the Loess Plateau (1950–2000), including alvar desert, alpine wet tundra, alpine rain tundra, boreal moist forest, boreal wet forest, cool temperate desert...

Desulfovibrio vulgaris Hildenborough, a sulfate-reducing bacterium classified as an obligate anaerobe, swam to a preferred oxygen concentration of 0.02 to 0.04% (0.24 to 0.48 microM), a level which also supported growth. Oxygen concentrations of 0.08% and higher arrested growth. We propose that in zones of transition from an oxic to an anoxic environment, D. vulgaris protects anoxic microenviro...

Introduction: As has been shown in several previous papers, biconically tapered single-mode fibres allow power transmission with a quasisinusoidal dependence on wavelength, elongation and surrounding medium refractive index. Tapered fibres have particular advantages for sensor and wavelength niters applications with a prescribed response. The biconic tapered structure is composed of a multimode...

Kreft and Jetz's critique of our recent update of Wallace's zoogeographical regions disregards the extensive sensitivity analyses we undertook, which demonstrate the robustness of our results to the choice of phylogenetic data and clustering algorithm. Their suggested distinction between "transition zones" and biogeographic regions is worthy of further investigation but is thus far unsubstantia...