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1.
Experimental verification of theory of photodeflection detection based on complex geometrical optics
Dorota Korte Kobylinska, Roman J. Bukowski, Bogusław Burak, Jerzy Bodzenta, 2006, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...fototermični eksperimenti, mirage efekt, foto odklonilni signal, ...
Keywords: fototermični eksperimenti, mirage efekt, foto odklonilni signal
Published: 15.10.2013; Views: 1889; Downloads: 54
URL Fulltext (0,00 KB)

2.
Gaussian optical beam propagation in thermal wave field
Dorota Korte Kobylinska, Roman J. Bukowski, Bogusław Burak, Stanislaw Kochowski, 2005, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...fototermični eksperimenti, detektor efekt, foto odklonilni signal, ...
Keywords: fototermični eksperimenti, detektor efekt, foto odklonilni signal
Published: 15.10.2013; Views: 2116; Downloads: 57
URL Fulltext (0,00 KB)

3.
Azimuthal asymmetry in the risetime of the Surface Detector signals of the Pierre Auger Observatory
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Ignacio Minaya, 2015, published scientific conference contribution

Abstract: The azimuthal asymmetry in the risetime of signals in Auger surface detector stations is a source of information on shower development. The azimuthal asymmetry is due to a combination of the longitudinal evolution of the shower and geometrical effects related to the angles of incidence of the particles into the detectors. The magnitude of the effect depends upon the zenith angle and state of development of the shower and thus provides a novel observable sensitive to the mass composition of cosmic rays above 3 × 10[sup]18 eV. By comparing measurements with predictions from shower simulations, we find for both of our adopted models of hadronic physics (QGSJetII- 04 and Epos-LHC) an indication that the mean cosmic-ray mass increases with energy, as has been inferred from other studies. However the absolute values derived for the mass are dependent on the shower model and on the range of distance from the shower core selected. Thus the method has uncovered further deficiencies in our understanding of shower modelling that must be resolved before the mass composition can be inferred from (sec θ)max.
Found in: ključnih besedah
Summary of found: ...Pierre Auger Observatory, Surface Detector, risetime of detector signal, azimuthal asymmetry, extensive air showers...
Keywords: Pierre Auger Observatory, Surface Detector, risetime of detector signal, azimuthal asymmetry, extensive air showers
Published: 03.03.2016; Views: 1544; Downloads: 89
.pdf Fulltext (243,04 KB)

4.
Properties of Null Hypersurfaces
Hovhannes Demirtshyan, 2016, master's thesis

Abstract: The aim of this thesis is to investigate the effects that a lightlike singular hypersurface can have on a congruence of timelike (spacelike) geodesics and to extend the existing theory to the case of null geodesics. The introduction discusses the applications of singular hypersurfaces for the description of physical phenomena, their major classfications and includes a short discussion of the two theoretical approaches that exist to study singular hypersurfaces. The second chapter contains detailed description of these approaches. The theoretical frameworks for both cases of lightlike and timelike (spacelike) hypersurfaces are developed. This chapter also discusses the application of these theories to the case when the hypersurface contains a plane fronted lightlike signal. The final chapter starts with a discussion of the effects that a lightlike singular hypersurface can have on a congruence of timelike (spacelike) geodesics. A new approach to these calculations is presented together with an extension of the theory to the case of a congruence of null geodesics. At the end of the chapter a concrete example and its similarities with the case of timelike geodesics is discussed. In conclusion, the thesis suggests a new mathematical framework for describing a congruence of null geodesics crossing a singular null hypersurface. The results may be applied in experimental physics to detect impulsive signals which are located in singular null hypersurfaces and to this end there is a discussion of the properties and possibilities for a detector of impulsive lightlike signals, which include gravitational waves.
Found in: ključnih besedah
Summary of found: ...the hypersurface contains a plane fronted lightlike signal. The final chapter starts with a discussion of...
Keywords: singular hypersurface, impulsive signal, gravitational wave, null geodesic, timelike (spacelike) geodesic
Published: 16.05.2016; Views: 2750; Downloads: 148
.pdf Fulltext (475,54 KB)

5.
6.
A cellular network database for fingerprint positioning systems
Angelo Montanari, Andrea Dalla Torre, Andrea Viel, Paolo Gallo, Donatella Gubiani, 2019, published scientific conference contribution

Abstract: Besides being a fundamental infrastructure for communication, cellular networks are increasingly exploited for positioning via signal fingerprinting. Here, we focus on cellular signal fingerprinting, where an accurate and comprehensive knowledge of the network is fundamental. We propose an original multilevel database for cellular networks, which can be automatically updated with new fingerprint measurements and makes it possible to execute a number of meaningful analyses. In particular, it allows one to monitor the distribution of cellular networks over countries, to determine the density of cells in different areas, and to detect inconsistencies in fingerprint observations.
Found in: ključnih besedah
Summary of found: ...networks are increasingly exploited for positioning via signal fingerprinting. Here, we focus on cellular signal fingerprinting,...
Keywords: Cellular network, Signal fingerprinting, Multilevel database, Data analysis
Published: 17.09.2019; Views: 202; Downloads: 0
.pdf Fulltext (2,40 MB)

7.
Photothermal spectrophotometer for meaurements of low absorption in liquid samples
J. Akbar, Humberto Cabrera, Dorota Korte Kobylinska, 2019, published scientific conference contribution abstract

Found in: ključnih besedah
Keywords: photothermal spectroscopy techniques, halogen lamps, TL signal
Published: 16.07.2019; Views: 197; Downloads: 0
.pdf Fulltext (324,00 KB)

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