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Wyszukujesz frazę "focusing" wg kryterium: Temat


Tytuł:
Don’t pay attention to what you see! Negative commands and attention bias
Autorzy:
Maciuszek, Józef
Powiązania:
https://bibliotekanauki.pl/articles/951975.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
negation
directives
attention focusing
Opis:
The paper presents research into the effects of the use of negations in directives (orders, suggestions, requests). Three experiments are described that tested the effects of instructions formulated in various ways: direct (pay attention to) and negated (don’t pay attention to) commands to focus the attention. Indicators of attention focusing that were used include: the correctness of answers to questions about a selection of comic book pages (Experiment 1); the time needed to name the colours of stimulus words and the level of recall of these words after completion of the colour naming task (Experiment 2 and 3). The results showed that a direct command infl uenced all indicators of attention focusing. However, a negated command increased the level of recall of details about the comic book pages, as well as the level of key word recall. Both the automatic process that generates the paradoxical effects of negated commands, as well as the controlled process of reasoning, may be responsible for the results of the memory task.
Źródło:
Polish Psychological Bulletin; 2013, 44, 1; 70-84
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Les pronoms démonstratifs neutres du français devant les subordonnées de type relatif
French neutral demonstrative pronouns before relative-type subordinate clauses
Autorzy:
Muller, Claude
Powiązania:
https://bibliotekanauki.pl/articles/31341265.pdf
Data publikacji:
2023
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Demonstrative
relative
cleft
focusing
Opis:
Ce travail examine le fonctionnement des pronoms démonstratifs neutres du français devant les subordinnées de type relatif. Il montre les différences de comportement de ce par rapport aux formes cela, ceci, ça , en détaillant les modes d'acquisition du sens et de la référence de ces termes, et établit que ce  est un pronom défini non démonstratif, avec des évolutions dans les usages.
This work deals with the construction of relatives and cleft clauses that follow a demonstrative pronoun in French. It examines their mode of acquisition of meaning and reference, either by referential increase obtained by predicative interactions and lexical meaning, or by the process of focusing on a referent in the situation or context. We show that the original pronoun ce is no longer demonstrative in all these structures, and how the various demonstratives are used in actual French in those contexts.
Źródło:
Neophilologica; 2023, 35; 1-28
0208-5550
2353-088X
Pojawia się w:
Neophilologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie numeryczne ogniskowania strugi cieczy w węźle mikrokanałów
Numerical modeling of hydrofocusing of liquid streams in microchannels
Autorzy:
Domagalski, P.
Dziubiński, M.
Powiązania:
https://bibliotekanauki.pl/articles/2070818.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
mikrokanały
hydroogniskowanie
CFD
microchannel
hydrodynamic focusing
Opis:
W pracy przedstawiono wyniki symulacji numerycznych procesu ogniskowania strugi cieczy w węźle mikrokanałów. Modelowanymi wielkościami były profile prędkości oraz geometria ogniskowanej strugi. Dostępne dane doświadczalne potwierdzają uzyskane wyniki symulacji.
Results of numerical simulations of hydrodynamic focusing of liquid streams in microchannels are presented in the paper. Velocity profiles and geometry of focusing streams were taken as modelling parameters. Available experimental data confirmed the results of CFD simulations.
Źródło:
Inżynieria i Aparatura Chemiczna; 2009, 6; 43-44
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Focusing of linearly polarized helico-conical Lorentz beam with sine-azimuthal variation wavefront
Autorzy:
Bao, Y.
Lan, J.
Miao, Y.
Zhang, D.
Gao, X.
Powiązania:
https://bibliotekanauki.pl/articles/174305.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Lorentz beam
focusing properties
optical vortex
Opis:
In this article a theoretical research is described into focusing of a linearly polarized helico-conical Lorentz beam with a sine-azimuthal variation wavefront. The simulation results show the vortex charge on the axis, which has an obvious modulation effect on the focal modes of the Lorenz beam under certain beam parameters and phase parameters. Both the phase parameter and the vortex charge are zero, the focal spot appears round. The focal spot is symmetric about y axis when the charge is 0 and the phase parameter is adjusted. And the focal evolution patterns vary remarkably under different beam parameters and the phase parameters. In the process of focus evolution, there appears some novel focal patterns, such as a circle, a “T”, a butterfly, a small running humanoid, a whale tail, a flower of four leaves, a serpentine, a goldfish, a Chinese knot and an octopus, which indicates that the focus mode of the optical vortex Lorentz beam can be altered by changing the phase parameters and vortex charge.
Źródło:
Optica Applicata; 2018, 48, 3; 373-387
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wizualizacja – próba eksplikacji pojęcia
Visualization- an attempt to explicate the concept
Autorzy:
Młodkowski, Jan
Powiązania:
https://bibliotekanauki.pl/articles/18805104.pdf
Data publikacji:
1999
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
imagination
visualization
pictoring
ideomotoric
focusing
explication of idea
Źródło:
Acta Universitatis Lodziensis. Folia Psychologica; 1999, 03; 47-60
2353-4842
Pojawia się w:
Acta Universitatis Lodziensis. Folia Psychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the Ultrasonic Ring Array Used in UTT for the Reflection Method Examinations of Structures
Autorzy:
Staszewski, Wiktor
Gudra, Tadeusz
Opieliński, Krzysztof J.
Powiązania:
https://bibliotekanauki.pl/articles/1945647.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
ultrasonic reflection tomography
dynamic focusing
ultrasonic ring array
Opis:
The ultrasonic ring array, designed for examining the female breast with the use of ultrasonic transmission tomography (UTT), has been adapted for reflection method trials. By altering the activation time of ultrasonic elementary transducers, the parameters of the focus were changed with the aim at improving the quality of the obtained ultrasound image. For this purpose, a phantom consisting of rods having varying thicknesses was analyzed when moving the position of the focus with the use of dynamic focusing along the symmetry axis of the ring array ranging from 30 to 130 mm from central transducers. In previous trials, which applied an algorithm using the sum of all the acoustic fields, a series of simulations was performed in conditions identical to the phantom trial. This paper documents attempts at improving the parameters of the acoustic field distribution during unconventional focusing. The research here presented is a continuation of examinations focusing on the acoustic field distribution inside the ultrasonic ring array with the aim at finding the best possible cross-section of the female breast using the reflection method.
Źródło:
Archives of Acoustics; 2021, 46, 3; 427-434
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finite-difference solution of parabolic equation and numerical simulation for X-ray focusing
Autorzy:
Elsawy, M. H. R. A.
Leble, S.
Powiązania:
https://bibliotekanauki.pl/articles/1954440.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska
Tematy:
finite difference model
focusing X-rays
Runge-Kutta
Opis:
In this paper we apply the finite-difference method to solve a parabolic equation of a general problem of short wave diffraction in a conducting medium. It is based on the implicit Runge-Kutta method of the second order combined with the iterative procedure. We also present new numerical simulations for X-rays focusing using the mentioned approach. We consider CRLs with a parabolic profile with a radius of curvature up to 0.2 mm. The main goal of this work is to elaborate an X-ray calculator for a PC which would present new possibilities compared to conventional ones. The correspondent code is written in FORTRAN to obtain the focal distance and diffraction spot profiles. Simulations for two cases were performed, the first one with 33 Al lenses for X-ray energy 15 keV, the results showed that we needed to consider more than 50000 points in each direction which forced us to consider a one-dimensional simulation only. For the second case we performed a simulation for several lenses, up to 15 Al lenses to perform the 2-d simulation. We have good agreement with the experimental data for the focal distance, and for the intensity at the focal plane while, for the spot size, we have smaller FWHM for the Gaussian beam at the detector than in the experimental data. We believe that the FWHM we have is smaller as our lenses are ideal without any defects.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2014, 18, 1; 101-111
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of acoustic field for a parametric focusing source using the spheroidal beam equation
Autorzy:
Yu, L.
Li, J.
Shi, C.
Powiązania:
https://bibliotekanauki.pl/articles/258564.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
parametric focusing source
difference frequency wave
SBE
acoustic field
Opis:
A theoretical model of acoustic field for a parametric focusing source on concave spherical surface is proposed. In this model, the source boundary conditions of the Spheroidal Beam Equation (SBE) for difference frequency wave excitation were studied. Propagation curves and beam patterns for difference frequency component of the acoustic field are compared with those obtained for Khokhlov-Zabolotskaya-Kuznetsov (KZK) model. The results demonstrate that the focused parametric model of SBE is good valid for a large aperture angle in the strongly focused acoustic field. It is also investigated that high directivity and good focal ability with the decreasing of downshift ratio and the increasing of half-aperture angle for the focused parametric model of SBE.
Źródło:
Polish Maritime Research; 2015, S 1; 43-47
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Global well-posedness and scattering for the focusing nonlinear Schrödinger equation in the nonradial case
Autorzy:
Han, P.
Powiązania:
https://bibliotekanauki.pl/articles/254861.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
critical energy
focusing Schrodinger equation
global well-posedness
scattering
Opis:
The energy-critical, focusing nonlinear Schrödinger equation in the nonradial case reads as follows: [formula]. Under a suitable assumption on the maximal strong solution, using a compactness argument and a virial identity, we establish the global well-posedness and scattering in the nonradial case, which gives a positive answer to one open problem proposed by Kenig and Merle [Invent. Math. 166 (2006), 645-675].
Źródło:
Opuscula Mathematica; 2012, 32, 3; 487-504
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Barack Obama’s Rhetorical Management of Public Opinion in the Context of Focusing Events
Autorzy:
Rzepecka, Marta
Powiązania:
https://bibliotekanauki.pl/articles/514745.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Śląski. Wydział Nauk Społecznych
Tematy:
Barack Obama
ISIL
presidential rhetoric
public opinion
focusing event
Opis:
This article explores President Barack Obama’s management of public opinion regarding his policy towards the Islamic State of Iraq and the Levant (ISIL) by analyzing the content of the address delivered on 10 September 2014 concerning the US strategy to defeat ISIL. Set in the context of the Obama administration’s approach to American foreign policy and with particular reference to videos released by ISIL showing the execution of US journalists, James W. Foley and Steven Sotloff, the analysis offers insights into how external events affect presidential attention, agendas, and public opinion management.
Źródło:
Political Preferences; 2018, 19; 53-76
2449-9064
Pojawia się w:
Political Preferences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extraordinary optical transmission and vortex excitation by periodic arrays of Fresnel zone plates
Autorzy:
Roszkiewicz, A.
Nasalski, W.
Powiązania:
https://bibliotekanauki.pl/articles/202304.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Fresnel zone plates
focusing
cross-polarisation coupling
optical vortices
Opis:
Extraordinary optical transmission and good focusing properties of a two-dimensional scattering structure is presented. The structure is made of Fresnel zone plates periodically arranged along two orthogonal directions. Each plate consists of two ring-shaped waveguides supporting modes that match the symmetry of a circularly polarized incident plane wave. High field concentration at the focal plane is obtained with the short transverse and long longitudinal foci diameters. Optical vortex excitation in a paraxial region of the transmitted field is also observed and analysed in terms of cross-polarisation coupling. The structure presented may appear useful in visualization, trapping and precise manipulations of nanoparticles.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 855-861
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on a low energy plasma focus discharge
Autorzy:
Allam, T. M.
Abd El-Latif, S. T.
Soliman, H. M.
Powiązania:
https://bibliotekanauki.pl/articles/146872.pdf
Data publikacji:
2007
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
plasma focus
plasma sheath dynamics
magnetic force
focusing action
Opis:
This paper is devoted to the experimental and theoretical study of plasma current sheath behavior for a low energy plasma focus device operating at a filling nitrogen gas pressure of 3.3 torr, and at a stored energy of 1.2 kJ. Axial distribution profiles of plasma current sheath (PCS) characteristics such as propagation velocity Vz, acceleration az, azimuthal magnetic field induction Btheta, and magnetic force per unit volume Fz/m3 along the coaxial electrodes system was performed from a magnetic probe and miniature Rogovsky coil signals. The experimental results showed that the axial distribution of Vz, az, Btheta and Fz has approximately the same profile and the maximum value of these parameters was detected nearly at a mid-distance of coaxial electrodes system. Theoretical description of PCS dynamics at the axial phase, based on a snowplough, was estimated as a function of discharge time. These data were compared with the received experimental results.
Źródło:
Nukleonika; 2007, 52, 3; 87-91
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhanced resonant second harmonic generation in plasma based on density transition
Autorzy:
Kant, N.
Thakur, V.
Powiązania:
https://bibliotekanauki.pl/articles/148562.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
second harmonic generation
laser
plasma density ramp
self-focusing
Opis:
Resonant second harmonic generation of a relativistic self-focusing laser in plasma with density ramp profile has been investigated. A high intense Gaussian laser beam generates resonant second harmonic beam in plasma with density ramp profile. The second harmonic undergoes periodic focusing in the plasma channel created by the fundamental wave. The normalized second harmonic amplitude varies periodically with distance and attains maximum value in the focal region. Enhancement in the second harmonic amplitude on account of relativistic self-focusing of laser based on plasma density transition is seen. Plasma density ramp plays an important role to make self-focusing stronger which leads to enhance the second harmonic generation in plasma.
Źródło:
Nukleonika; 2015, 60, 2; 355-360
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Focusing properties of partially coherent dark hollow Gaussian beams through a thin lens system
Autorzy:
Dong, Y
Zhao, C
Wang, K
Cai, Y
Powiązania:
https://bibliotekanauki.pl/articles/175075.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
focusing properties
partially coherent
dark hollow beam
focal shift
Opis:
This paper investigated the focal shift of partially coherent dark hollow Gaussian beams through a thin lens system. An analytic expression of the irradiance distribution of the focusing partially coherent dark hollow Gaussian beams in the back focal plane has been given by using the Collins formula. The focus shift of focused partially coherent dark hollow Gaussian beams in different parameters is studied in detail by numerical calculations. It is found that the absolute value of the focal shift of partially coherent dark hollow Gaussian beams decreases as the transverse coherence width or the order of the dark hollow Gaussian beams or a parameter of the dark hollow Gaussian beams increases.
Źródło:
Optica Applicata; 2015, 45, 2; 151-161
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Miniaturized device for a cell lysis process
Autorzy:
Kwapiszewski, R.
Chudy, M.
Dybko, A.
Brzózka, Z.
Powiązania:
https://bibliotekanauki.pl/articles/115684.pdf
Data publikacji:
2011
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
microdevice
microfludic chip
chemical cell lysis
sheath flow
hydrodynamic focusing
Opis:
Single-cell studies are crucial for gaining knowledge on complexity of intracellular processes. In many cases, carrying researches into cell ingredients must be proceeded by a lysis process. Cell lysis leads to disintegration of the plasma membrane which is the barrier separating cell contents from the environment. However, investigations at the cellular level would not be possible without proper miniaturized tools, which offer many advantages as low reagents consumption, short reaction time, integration, automation or versatility. The goal of this work was to design and develop a microfluidic chip for a chemical cell lysis process. The geometry of a microsystem presented is based on the hydrodynamic focusing of a cell suspension stream. Applying non-denaturing cell lysis buffer enables to analyze released cell ingredients during next steps of investigations.
Źródło:
Challenges of Modern Technology; 2011, 2, 2; 50-52
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł

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