Ein neues Verfahren zur Zustandsdiagnose an rotierenden Maschinen bei veränderlichen Drehzahlen

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Mobility of Discrete Solitons in Quadratically Nonlinear Media

We study the mobility of solitons in second-harmonic-generating lattices. Contrary to what is known for their cubic counterparts, discrete quadratic solitons are mobile not only in the one-dimensional (1D) setting, but also in two dimensions (2D). We identify parametric regions where an initial kick applied to a soliton leads to three possible outcomes, namely, staying put, persistent motion, or destruction. For the 2D lattice, it is found that, for the solitary waves, the direction along which they can sustain the largest kick and can attain the largest speed is the diagonal. Basic dynamical properties of the discrete solitons are also discussed in the context of an analytical approximation, in terms of an effective Peierls-Nabarro potential in the lattice setting.Comment: 4 page

Nonlinear optics and light localization in periodic photonic lattices

We review the recent developments in the field of photonic lattices emphasizing their unique properties for controlling linear and nonlinear propagation of light. We draw some important links between optical lattices and photonic crystals pointing towards practical applications in optical communications and computing, beam shaping, and bio-sensing.Comment: to appear in Journal of Nonlinear Optical Physics & Materials (JNOPM

D 3. 3 Final performance results and consolidated view on the most promising multi -node/multi -antenna transmission technologies

This document provides the most recent updates on the technical contributions and research challenges focused in WP3. Each Technology Component (TeC) has been evaluated under possible uniform assessment framework of WP3 which is based on the simulation guidelines of WP6. The performance assessment is supported by the simulation results which are in their mature and stable state. An update on the Most Promising Technology Approaches (MPTAs) and their associated TeCs is the main focus of this document. Based on the input of all the TeCs in WP3, a consolidated view of WP3 on the role of multinode/multi-antenna transmission technologies in 5G systems has also been provided. This consolidated view is further supported in this document by the presentation of the impact of MPTAs on METIS scenarios and the addressed METIS goals.Aziz, D.; Baracca, P.; De Carvalho, E.; Fantini, R.; Rajatheva, N.; Popovski, P.; Sørensen, JH.... (2015). D 3. 3 Final performance results and consolidated view on the most promising multi -node/multi -antenna transmission technologies. http://hdl.handle.net/10251/7675

Fizyko-matematyczny model procesu iskrzenia ciernego

W artykule omówiony został fizyko–matematyczny model iskrzenia sprzęgła ciernego. Z procesem iskrzenia związana jest możliwość miejscowego podwyższenia temperatury i przekazywania energii, która może być przyczyną pożarów

Badanie metodą radiometryczną sprawności cieplnej budynków

W pracy przedstawiono zagadnienie określania metodą radiometryczną sprawności cieplnej budynków w otoczeniu. Przedstawiono formalny opis obrazowania termalnego obiektów w scenie termicznej z uwzględnieniem promieniowania otoczenia. Przy obrazowaniu termalnym budynków różnica temperatur między budynkiem a otoczeniem jest niewielka w porównaniu do innych zastosowań radiometrii. Stąd wielkość i rozkład promieniowania otoczenia jest bardzo ważnym czynnikiem w termografii budynków. W pracy postawiono istotne pytanie: czy dla potrzeb oceny sprawności cieplnej budynków potrzebna i niezbędna jest ocena wielkości emitowanego strumienia ciepła? Przedstawiono sposoby szacowania sprawności cieplnej budynków z ich termogramów w scenie termicznej. Wykonano program określania tej sprawności w analizowanym obszarze termogramu budynku wykonywanego skanerem AGEMA serii 880.The aim of t his work is to discuss methods of evaluation building thermal perfonnance by using radiometric method of measuring. The work presents formal description of thermal imaging of buildings in thermal scen e taking into account radiation of the environment. In application of thermal imaging of the buildings the difference between temperatures of the building and the environment is rather low in comparison with other applications of radiometry. Therefore, amount of radiation of the environment play s crucial role in conducting building thermography. The work poses an important question, namely, whether for evaluation of building thermal perfonnance it is needed to measure the amount of heat flux from building wall. The work presents methods of evaluation of building thermal perfonnance on the basis of their thermal images. AIs o a program is discussed for determination of such thermal perfonnance within the analyzed part of the building thermal image mad e by scanner AGEMA series 880