BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Europe/Riga BEGIN:DAYLIGHT DTSTART:20220327T040000 TZOFFSETFROM:+0200 TZOFFSETTO:+0300 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 TZNAME:EEST END:DAYLIGHT BEGIN:STANDARD DTSTART:20221030T030000 TZOFFSETFROM:+0300 TZOFFSETTO:+0200 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:EET END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20221111T174423Z UID:11F80581-411F-4711-8386-FF6443640D03 DTSTART;TZID=Europe/Riga:20221005T094500 DTEND;TZID=Europe/Riga:20221005T103000 DESCRIPTION:We consider eigenvalue problems for dielectric cylindrical scat terers of specifically circular and arbitrary cross sections with generali zed conditions at infinity. The problem statement enables one to take into account complex eigenvalues. The existence of resonance (scattering) freq uencies associated with these eigenvalues is proved using the developed ap proach.\nThe technique involves determination of characteristic numbers (C Ns) of the Fredholm operator-valued functions of the problems constructed using Green’s potentials.\nSeparating principal parts in the form of mer omorphic operator pencils we apply the operator generalization of Rouche ’s theorem to verify the occurrence of CNs in close proximities of the s ingularities of the pole pencils. The results are illustrated using the ca se of a dielectric cylinder of circular cross section.\nNext\, we develop a technique that allows one to obtain explicitly the parameter sets for ca nonical structures of circular or planar symmetry at which resonance scatt ering or partial invisibility are observed. The approach employs analysis of the solution expansion coefficients considered as functions of the prob lem parameters.\n\nSpeaker(s): Prof. Yury Shestopalov\, \n\nAgenda: \nRTU\ , Zunda krastmala 10\, room 104\, Riga\n09:00 - 09:30 Registration\n9:30 - 09.45 IEEE Day & ICTfest Celebration Opening\n09:45 - 10.30 Keynote Speec h Prof. Yury Shestopalov (Högskolan i Gävle) - Resonance scattering and cloaking: unified mathematical approach and model\n10:30 – 11:15 Keynote Speech Prof. Oscar Quevedo-Teruel (Royal Institute of Technology - KTH) - Glide symmetries: a new degree of freedom for the design of periodic stru ctures\n11:15 - 12.00 Keynote Speech Prof. Dr.-Ing. Ingo Gaspard (Hochschu le Darmstadt – University of Applied Sciences) - Measurement\, modelling and simulation of polarization properties of the indoor radio channel at microwave frequencies and below\n14:30 - 18.30 IEEE Lithuania and Latvia S ections Workshop on Microwave Device and Systems\n19.00 - 21.00 Organizati on Committee meeting of IEEE Lithuania and Latvia Sections Workshop on Mic rowave Device and Systems\n\nRoom: room 104\, Bldg: 10\, Zunda krastmala\, Riga\, Latvia\, Latvia LOCATION:Room: room 104\, Bldg: 10\, Zunda krastmala\, Riga\, Latvia\, Latv ia ORGANIZER:anna.litvinenko@rtu.lv SEQUENCE:5 SUMMARY:Keynote Speech Prof. Yury Shestopalov (Högskolan i Gävle) - Reson ance scattering and cloaking: unified mathematical approach and model URL;VALUE=URI:https://events.vtools.ieee.org/m/324760 X-ALT-DESC:Description: <br /><p>We consider eigenvalue problems for dielec tric cylindrical scatterers of specifically circular and arbitrary cross s ections with generalized conditions at infinity. The problem statement ena bles one to take into account complex eigenvalues. The existence of resona nce (scattering) frequencies associated with these eigenvalues is proved u sing the developed approach.<br />The technique involves determination of characteristic numbers (CNs) of the Fredholm operator-valued functions of the problems constructed using Green&rsquo\;s potentials.<br />Separating principal parts in the form of meromorphic operator pencils we apply the o perator generalization of Rouche&rsquo\;s theorem to verify the occurrence of CNs in close proximities of the singularities of the pole pencils. The results are illustrated using the case of a dielectric cylinder of circul ar cross section.<br />Next\, we develop a technique that allows one to ob tain explicitly the parameter sets for canonical structures of circular or planar symmetry at which resonance scattering or partial invisibility are observed. The approach employs analysis of the solution expansion coeffic ients considered as functions of the problem parameters.</p><br /><br />Ag enda: <br /><p>RTU\, Zunda krastmala 10\, room 104\, Riga&nbsp\;<br />09:0 0 - 09:30 Registration&nbsp\;<br />9:30 - 09.45 IEEE Day &amp\; ICTfest Ce lebration Opening<br />09:45 - 10.30 Keynote Speech Prof. Yury Shestopalov (H&ouml\;gskolan i G&auml\;vle) - Resonance scattering and cloaking: unif ied mathematical approach and model<br />10:30 &ndash\; 11:15 Keynote Spee ch Prof. Oscar Quevedo-Teruel (Royal Institute of Technology - KTH) - Glid e symmetries: a new degree of freedom for the design of periodic structure s<br />11:15 - 12.00 Keynote Speech Prof. Dr.-Ing. Ingo Gaspard (Hochschul e Darmstadt &ndash\; University of Applied Sciences) - Measurement\, model ling and simulation of polarization properties of the indoor radio channel at microwave frequencies and below<br />14:30 - 18.30 IEEE Lithuania and Latvia Sections Workshop on Microwave Device and Systems<br />19.00 - 21.0 0 Organization Committee meeting of IEEE Lithuania and Latvia Sections Wor kshop on Microwave Device and Systems</p> END:VEVENT END:VCALENDAR