Search results for "PROB"
showing 10 items of 8859 documents
Surface enhanced Raman scattering of silver sensitized cobalt nanoparticles in metal–dielectric nanocomposites
2008
We report the preparation of a new type of nanocomposite containing cobalt and silver nanoparticles organized in parallel layers with a well controlled separation. This arrangement allows the observation of an enhanced low-frequency Raman signal at the vibration frequency of cobalt nanoparticles excited through the surface plasmons of silver nanoparticles. Numerical simulations of the electric field confirm the emergence of hot spots when the separation between silver and cobalt nanoparticles is small enough. © IOP Publishing Ltd.
Change and stability of sense of coherence in adulthood: Longitudinal evidence from the Healthy Child study
2007
Abstract The main aim of this three-wave 35-year follow-up study among Finnish employees ( n = 532) was to investigate whether Sense of Coherence (SOC) is more stable among those with high SOC compared to those with low SOC, as hypothesized by Antonovsky [Antonovsky, A. (1987). Unraveling the mystery of health: how people manage stress and stay well. San Francisco, CA, US: Jossey-Bass], using two measurement points over 13 years. The participants were first studied in adolescence in 1961–1963, after which they responded to two postal questionnaires measuring SOC, first in 1985, and again in 1998. The results of the Factor Mixture Modeling identified two groups of individuals with different…
Boundary value problem with integral condition for a Blasius type equation
2016
The steady motion in the boundary layer along a thin flat plate, which is immersed at zero incidence in a uniform stream with constant velocity, can be described in terms of the solution of the differential equation x'''= -xx'', which satisfies the boundary conditions x(0) = x'(0) = 0, x'(∞) = 1. The author investigates the generalized boundary value problem consisting of the nonlinear third-order differential equation x''' = -trx|x|q-1x'' subject to the integral boundary conditions x(0) = x'(0) = 0, x'(∞) = λ∫0ξx(s) ds, where 0 0 is a parameter. Results on the existence and uniqueness of solutions to boundary value problem are established. An illustrative example is provided.
Multi-parameter analysis of the obstacle scattering problem
2022
Abstract We consider the acoustic field scattered by a bounded impenetrable obstacle and we study its dependence upon a certain set of parameters. As usual, the problem is modeled by an exterior Dirichlet problem for the Helmholtz equation Δu + k 2 u = 0. We show that the solution u and its far field pattern u ∞ depend real analytically on the shape of the obstacle, the wave number k, and the Dirichlet datum. We also prove a similar result for the corresponding Dirichlet-to-Neumann map.
Measurement of Atmospheric Neutrino Oscillations at 6–56 GeV with IceCube DeepCore
2018
We present a measurement of the atmospheric neutrino oscillation parameters using three years of data from the IceCube Neutrino Observatory. The DeepCore infill array in the center of IceCube enables the detection and reconstruction of neutrinos produced by the interaction of cosmic rays in Earth's atmosphere at energies as low as ∼5 GeV. That energy threshold permits measurements of muon neutrino disappearance, over a range of baselines up to the diameter of the Earth, probing the same range of L/Eν as long-baseline experiments but with substantially higher-energy neutrinos. This analysis uses neutrinos from the full sky with reconstructed energies from 5.6 to 56 GeV. We measure Δm322=2.31…
Photoinduced Electron Transfer in a Porphyrin-Fullerene Dyad at a Liquid Interface
2022
The excited-state properties of an amphiphilic porphyrin–fullerene dyad and of its porphyrin analogue adsorbed at the dodecane/water interface are investigated by using surface second-harmonic generation. Although the porphyrin is formally centrosymmetric, the second-harmonic spectra of both compounds are dominated by the intense Soret band of the porphyrin. Polarization-selective measurements and molecular dynamics simulations suggest an angle of about 45° between the donor–acceptor axis and the interfacial plane, with the porphyrin interacting mostly with the nonpolar phase. Time-resolved measurements reveal a marked concentration dependence of the dynamics of both compounds upon Q-band e…
Pusaudžu izvairīgas/ierobežojošas pārtikas uzņemšanas traucējuma iezīmju, sensorā jutīguma un internalizētu uzvedības problēmu sakarības
2022
Darba mērķis ir izpētīt ARFID iezīmju, sensorā jutīguma un internalizēto uzvedības problēmu sakarības pusaudžiem. Pētījumā piedalījās 271 pusaudzis 14 – 18 gadu vecumā. Pētījumā tika izmantotas trīs aptaujas – Deviņu jautājumu ARFID aptauja, Īpaši jutīga bērna aptauja, Ahenbaha jaunieša uzvedības pašnovērtēšanas aptaujas internalizēto uzvedības problēmu skalas. Rezultāti parādīja, ka pastāv statistiski nozīmīgas pozitīvas saistības starp pusaudžu ARFID iezīmēm, sensoro jutīgumu un internalizētām uzvedības problēmām. Meitenēm tika novērotas izteiktākas ARFID iezīmes, sensorais jutīgums un internalizētas uzvedības problēmas nekā zēniem. Internalizētas uzvedības problēmu kopējie rādītāji progn…
Zu Problemen beim bilateralen Konsekutivdolmetschen im Sprachenpaar Polnisch-Deutsch am Beispiel von Germanistikstudierenden der Universität Opole
2017
Breeding near heterospecifics as a defence against brood parasites: can redstarts lower probability of cuckoo parasitism using neighbours?
2022
Breeding habitat choice based on the attraction to other species can provide valuable social information and protection benefits. In birds, species with overlapping resources can be a cue of good quality habitats; species with shared predators and/or brood parasites can increase joint vigilance or cooperative mobbing, while raptors may provide a protective umbrella against these threats. We tested whether the migratory common redstart (Phoenicurus phoenicurus) is attracted to breed near active nests of the great tit (Parus major), a keystone-information source for migrant passerine birds, or a top predator, the northern goshawk (Accipiter gentilis). This system is unique to test these quest…
Vecāku kompetences izjūtas un bērnu uzvedības problēmu novērtējuma izmaiņas pirms un pēc programmas STOP 4-7 intervences
2022
Maģistra darba mērķis ir noskaidrot, vai un kā mainās vecāku kompetences izjūtas līmenis un bērnu uzvedības problēmu novētējums pēc STOP 4-7 intervences programmas. Tiek definēti divi pētījuma jautājumi: 1.Vai pastāv statistiski nozīmīgas izmaiņas vecāku kompetences izjūtā pēc piedalīšanās intervences programmā STOP 4-7? 2. Vai pastāv statistiki nozīmīgas izmaiņas vecāku sniegtajā bērnu uzvedības problēmu novērtējumā pēc piedalīšanās programmā STOP 4-7? Lai gūtu atbildi uz šiem jautājumiem, tika veikts ekperimentāla dizaina pētījums. Eksperimentālajā grupā tika iekļauti dati par 29 bērnu uzvedības aptauju vecāku novērtējumiem un 30 dati par vecāku kompetences izjūtas novērtējumiem pirms un …