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Can Marine Micro-organisms Influence Melting of the Arctic Pack Ice?

The Arctic Ocean Expedition of 2001 (AOE-2001) to the central Arctic mostly north of latitude 85°N was conducted to study marine life forms and their products in water and ice, how their products may get into the air, the evolution of the particles produced, and their growth up to sizes large enough for activation into clouds. The expedition also investigated whether these naturally generated part

Anytime reliable transmission of real-valued information through digital noisy channels

The problem of reliably transmitting a real-va lued random vector through a digital noisy channel is relevant for the design of distributed estimation and control techniques over networked systems. One important example consists in the remote state estimation under communication constraints. In this case, an anytime transmission scheme consists of an encoder-which maps the real vector into a seque

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This article deals with the establishment of masonic lodges in Germany and their function as a zone of encounters between intellectuals.

On the generation of surface waves in frequency selective structures

In this paper, we discuss and analyze the criteria for the existence and the generation of surface modes in dielectric slabs with and without metallic layers (frequency selective structures, FSS). The material parameter of the slab is in general bianisotropic, but the examples and the numerical computations show only isotropic materials. It is shown that there are three different categories of reso