Search results for "Angular"
showing 10 items of 1774 documents
Surface plasmon interference excited by tightly focused laser beams
2007
International audience; We show that interfering surface plasmon polaritons can be excited with a focused laser beam at normal incidence to a plane metal film. No protrusions or holes are needed in this excitation scheme. Depending on the axial position of the focus, the intensity distribution on the metal surface is either dominated by interferences between counterpropagating plasmons or by a two-lobe pattern characteristic of localized surface plasmon excitation. Our experiments can be accurately explained by use of the angular spectrum representation and provide a simple means for locally exciting standing surface plasmon polaritons.
Las relaciones de amor en parejas de media y larga duración: componentes de la teoría triangular, variables individuales y cambios generacionales
2019
Tener pareja ha sido, y es, una de las experiencias normativas por la que pasamos la mayoría de los seres humanos, además de suponer la forma más común de formar una familia. La importancia del grupo familiar es indiscutible, sin importar contextos y culturas, puesto que cumple funciones fundamentales para la supervivencia y bienestar de sus miembros, facilitando la continuidad de futuras generaciones y, permitiendo así, la transmisión de normas culturales, creencias, valores y costumbres. Sabido es que la vida es cambio y evolución, lo que aplicado a estos dos dominios ha supuesto que en pocas décadas estas estructuras sociales hayan conocido rápidas y profundas transformaciones, las cuale…
Searching for signatures around 1920 MeV of a N-* state of three hadron nature
2009
We provide a series of arguments which support the idea that the peak seen in the gamma p -> K+ Lambda reaction around 1920 MeV should correspond to the recently predicted state of J(P) = 1/2(+) as a bound state of K(K) over bar N with a mixture of alpha(0)(980)N and f(0)(980)N components. At the same time we propose polarization experiments in that reaction as a further test of the prediction, as well as a study of the total cross-section for gamma p -> K(+)K(-)p at energies close to threshold and of d sigma/dM(inv) for invariant masses close to the two-kaon threshold.
Measurement of light-by-light scattering and search for axion-like particles with 2.2 nb−1 of Pb+Pb data with the ATLAS detector
2021
We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; ANID, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany; GSRT, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Mor…
Search for intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network
2019
Gravitational wave astronomy has been firmly established with the detection of gravitational waves from the merger of ten stellar mass binary black holes and a neutron star binary. This paper reports on the all-sky search for gravitational waves from intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network. The search uses three independent algorithms: two based on matched filtering of the data with waveform templates of gravitational wave signals from compact binaries, and a third, model-independent algorithm that employs no signal model for the incoming signal. No intermediate mass black hole binary event was detected in this sear…
Digitāla bioloģiskās kustības uztveres testēšanas rīka izstrāde
2022
Bioloģiskā kustība ir reālās pasaules bioloģisko būtņu kustības atveids uz ekrāna ar gaismas punktiem. Cilvēka uztveres procesi spēj atšķirt vizuāli uztverto informāciju un to iedalīt dzīvos un nedzīvos objektos. Darbā tiek apskatīts, kā šis iedalījums veidojas, kāds ir minimālais stimulu (gaismas punktu) skaits, kas ir nepieciešams bioloģiskās kustības uztverei, kā arī – kādas ir bioloģiskās kustības uztveršanas stadijas. Cilvēka vizuālās uztveres sistēmas spēju uztvert bioloģisko kustību izmanto klīniskos pētījumos medicīnā. Cilvēkiem ar neiroloģiskām un neirodeģeneratīvām saslimšanām šī uztveres spēja ir samazināta. Darba mērķis ir izstrādāt eksperimentālos rezultātos pamatotu tīmekļa li…
Budžeta prognozēšanas un izpildes kontroles sistēma
2015
Budžeta prognozēšanas un izpildes kontroles sistēma ļauj lietotājiem prognozēt un plānot uzņēmuma budžetu, kā arī sekot tā izpildei. Tās galvenais mērķis ir palīdzēt uzņēmuma vadībai būt informētiem par finanšu stāvokli un efektīvi izmantot uzņēmuma naudas līdzekļus. Sistēmas izstrādāšana vēl nav pabeigta, bet ir realizētā tās galvenā funkcionalitāte, kura ir aprakstīta šī darba ietvaros. Turklāt šī sistēma tiek aktīvi izmantota uzņēmuma (“Client Line”, SIA) vajadzībām. Sistēma tiek izstrādātā pēc spējās programmatūras izstrādes pieejas un programmprodukts ir sadalīts divās daļās – fasāde (frontend – Angular.js) un aizmugure (backend – Java, MSSQL, Glassfish).
Detection and orientation evaluation for three-dimensional objects
2003
This paper presents a novel method for detection and orientation evaluation for three-dimensional (3-D) objects based on range images. It is based on the calculation of the phase Fourier transform of the 3-D object range image. The method permits the estimation of the angular position of the object. It works with rotations around an axis perpendicular to the line of sight, although it exhibits a certain nodding tolerance. Simulated results demonstrate the ability of the new introduced method.
Sensorless control of permanent magnet synchronous motors for wide speed range applications
2006
This paper deals with sensorless control of Interior Permanent Magnet Synchronous Motors (IPMS) based on the estimation of speed and rotor angular position. The above estimate is based on the injection of high frequency stator currents able to generate a signal similar to that generated by a resolver connected to the axis of the motor. A new digital algorithm has been designed to demodulate the above signal whose implementation can be carried out on the same DSP that processes the control algorithm. In this paper a new scheme of speed and angular position estimator is proposed and justified on the theoretic point of view. The experimental results here shown validate the effectiveness of the…
Characterization of the surface emissivity and temperature at heterogeneous sites for different zenith viewing angles using remote sensing
2020
Para estimar con precisión la temperatura de la superficie terrestre (TST) es necesario conocer con exactitud la emisividad de dicha superficie. Sobre zonas vegetadas, la estimación de la emisividad es más compleja debido a las reflexiones múltiples de la radiación (emitida y reflejada) entre los distintos elementos que forman la vegetación (suelo y elementos de la planta). En la literatura pueden encontrarse diversos métodos que modelan la emisividad de la vegetación. En este trabajo, se ha profundizado en el análisis y evaluación de los modelos de transferencia radiativa (MTR) para la obtención de la emisividad direccional de la vegetación. Los modelos utilizados para este estudio han sid…