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Artykuły w czasopismach na temat „Low-modes asymmetries”

Autor: Grafiati
Data publikacji: 14 września 2024
Data aktualizacji: 31 lipca 2025

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1

Chaplin, W. J., Y. Elsworth, G. R. Isaak, C. P. McLeod, B. A. Miller та R. New. "A Search for ℓ = 2 Asymmetries in Bison Data". Symposium - International Astronomical Union 185 (1998): 169–70. http://dx.doi.org/10.1017/s0074180900238527.

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An in-depth discussion of the analysis presented here can be found in an up-coming paper (Chaplin et al., 1997).The presence of a magnetic field will raise the degeneracy in ℓ of the resonant p-mode oscillations, via perturbations resulting from the Lorentz force. These degeneracyraising effects will give rise to asymmetric mode-multiplet structures. Both Gough & Thompson (1990). and Dziembowski & Goode (1997) have addressed the implications and potential complications that might result from such phenomena. Here, in an attempt to reveal the presence of an asymmetric frequency structure
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2

Philidet, J., K. Belkacem, H. G. Ludwig, R. Samadi, and C. Barban. "Velocity-intensity asymmetry reversal of solar radial p-modes." Astronomy & Astrophysics 644 (December 2020): A171. http://dx.doi.org/10.1051/0004-6361/202038222.

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The development of space-borne missions has significantly improved the quality of the measured spectra of solar-like oscillators. Their p-mode line profiles can now be resolved, and the asymmetries inferred for a variety of stars other than the Sun. However, it has been known for a long time that the asymmetries of solar p-modes are reversed between the velocity and the intensity spectra. Understanding the origin of this reversal is necessary in order to use asymmetries as a tool for seismic diagnosis. For stars other than the Sun, only the intensity power spectrum is sufficiently resolved to
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3

Regan, Marc A., and Krishnan Mahesh. "Adjoint sensitivity and optimal perturbations of the low-speed jet in cross-flow." Journal of Fluid Mechanics 877 (August 22, 2019): 330–72. http://dx.doi.org/10.1017/jfm.2019.582.

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The tri-global stability and sensitivity of the low-speed jet in cross-flow are studied using the adjoint equations and finite-time horizon optimal disturbance analysis at Reynolds number $Re=2000$, based on the average velocity at the jet exit, the jet nozzle exit diameter and the kinematic viscosity of the jet, for two jet-to-cross-flow velocity ratios $R=2$ and $4$. A novel capability is developed on unstructured grids and parallel platforms for this purpose. Asymmetric modes are more important to the overall dynamics at $R=4$, suggesting increased sensitivity to experimental asymmetries at
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4

Deheuvels, S., R. M. Ouazzani, and S. Basu. "Near-degeneracy effects on the frequencies of rotationally-split mixed modes in red giants." Astronomy & Astrophysics 605 (September 2017): A75. http://dx.doi.org/10.1051/0004-6361/201730786.

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Context. The Kepler space mission has made it possible to measure the rotational splittings of mixed modes in red giants, thereby providing an unprecedented opportunity to probe the internal rotation of these stars. Aims. Asymmetries have been detected in the rotational multiplets of several red giants. This is unexpected since all the red giants whose rotation profiles have been measured thus far are found to rotate slowly, and low rotation, in principle, produces symmetrical multiplets. Our aim here is to explain these asymmetries and find a way of exploiting them to probe the internal rotat
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5

Wilcox, R. S., L. R. Baylor, A. Bortolon, et al. "Pellet triggering of edge localized modes in low collisionality pedestals at DIII-D." Nuclear Fusion 62, no. 2 (2021): 026017. http://dx.doi.org/10.1088/1741-4326/ac3b8b.

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Abstract Edge localized modes (ELMs) are triggered using deuterium pellets injected into plasmas with ITER-relevant low collisionality pedestals, and the resulting peak ELM energy fluence is reduced by approximately 25%–50% relative to natural ELMs destabilized at similar pedestal pressures. Cryogenically frozen deuterium pellets are injected from the low-field side of the DIII-D tokamak at frequencies lower than the natural ELM frequency, and heat flux is measured by infrared cameras. Ideal MHD pedestal stability calculations show that without pellet injection, these low collisionality pedest
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6

Woo, K. M., R. Betti, C. A. Thomas, et al. "Analysis of core asymmetries in inertial confinement fusion implosions using three-dimensional hot-spot reconstruction." Physics of Plasmas 29, no. 8 (2022): 082705. http://dx.doi.org/10.1063/5.0102167.

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Three-dimensional effects play a crucial role during the hot-spot formation in inertial confinement fusion (ICF) implosions. A data analysis technique for 3D hot-spot reconstruction from experimental observables has been developed to characterize the effects of low modes on 3D hot-spot formations. In nuclear measurements, the effective flow direction, governed by the maximum eigenvalue in the velocity variance of apparent ion temperatures, has been found to agree with the measured hot-spot flows for implosions dominated by mode [Formula: see text]. Asymmetries in areal-density ( ρR) measuremen
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7

Dikpati, Mausumi, Bernadett Belucz, Robertus Erdélyi, Peter A. Gilman, Scott W. McIntosh, and Breno Raphaldini. "Magnetohydrodynamic Instabilities of Double Magnetic Bands in a Shallow-water Tachocline Model. II. Teleconnection Between High- and Low-latitude Bands and Across Equator." Astrophysical Journal 977, no. 1 (2024): 99. https://doi.org/10.3847/1538-4357/ad8b50.

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Abstract The “extended solar cycle” indicates that there are two deeply seated toroidal magnetic field bands in each hemisphere. Both bands migrate equatorward as a sunspot cycle progresses. Here, we examine the consequences of global MHD instability of this migrating double-band system in tachocline on the latitudinal structure of unstable modes, which are essentially MHD Rossby waves. We find that latitude-location, latitude-separation, and the amplitude of the bands strongly influence the latitudinal structure and growth rates of the unstable modes of both symmetries about the equator. Thes
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8

Bugnet, L., V. Prat, S. Mathis, et al. "Magnetic signatures on mixed-mode frequencies." Astronomy & Astrophysics 650 (June 2021): A53. http://dx.doi.org/10.1051/0004-6361/202039159.

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Context. The discovery of moderate differential rotation between the core and the envelope of evolved solar-like stars could be the signature of a strong magnetic field trapped inside the radiative interior. The population of intermediate-mass red giants presenting surprisingly low-amplitude mixed modes (i.e. oscillation modes that behave as acoustic modes in their external envelope and as gravity modes in their core) could also arise from the effect of an internal magnetic field. Indeed, stars more massive than about 1.1 solar masses are known to develop a convective core during their main se
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9

Alexander, D. E. "Wind tunnel studies of turns by flying dragonflies." Journal of Experimental Biology 122, no. 1 (1986): 81–98. http://dx.doi.org/10.1242/jeb.122.1.81.

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High-speed movies of dragonflies turning in flight on flexible tethers show that there are two distinct modes of turning. In the ‘conventional’ mode, dragonflies use left-right asymmetries in the wing stroke amplitude, and occasionally in the angle of attack, to produce more lift and thrust on one side than the other. This causes the animal to roll into a bank, so that the lift vector has a sideward component; this sideward component produces the turn, much as in an airplane. This type of turn is probably most useful during fast forward flight. The second mode of turning in the ‘yaw turn’. Yaw
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10

CAZACU, Emil, and Lucian PETRESCU. "ASPECTE CALITATIVE ȘI CANTITATIVE ALE FENOMENUL DE FEROREZONANȚĂ ÎN INSTALAȚIILE ELECTRICE DE JOASĂ TENSIUNE." "ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)" 2020, no. 1 (2021): 1–14. http://dx.doi.org/10.36801/apme.2020.1.8.

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The phenomenon of ferroresonance is generated by the interaction between nonlinear magnetic devices and capacitive elements in an electrical installation in which losses are reduced and which are constantly supplied by at least one energy source. Feroresonance is manifested by the appearance of overvoltages and overcurrents in the installation with strongly distorted waveforms. Also, the phenomenon is accompanied by other disturbances of the quality of electricity (voltage fluctuations, asymmetries, noise, etc.), which propagate in the network affecting the proper functioning of the entire ins
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11

Hall, H. G. "Parental analysis of introgressive hybridization between African and European honeybees using nuclear DNA RFLPs." Genetics 125, no. 3 (1990): 611–21. http://dx.doi.org/10.1093/genetics/125.3.611.

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Abstract African honeybees, introduced into Brazil 33 years ago, have spread through most of South and Central America and have largely replaced the extant European bees. Due to a paucity of genetic markers, genetic interactions between European and African bees are not well understood. Three restriction fragment length polymorphisms (RFLPs), detected with random, nuclear DNA probes, are described. The polymorphisms are specific to bees of European descent, possibly specific to certain European races. Each European marker was found present at a high frequency in U.S. colonies but absent in Sou
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12

Churnetski, K., K. M. Woo, W. Theobald, et al. "Three-dimensional hot-spot x-ray emission tomography from cryogenic deuterium–tritium direct-drive implosions on OMEGA." Review of Scientific Instruments 93, no. 9 (2022): 093530. http://dx.doi.org/10.1063/5.0098977.

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A three-dimensional model of the hot-spot x-ray emission has been developed and applied to the study of low-mode drive asymmetries in direct-drive inertial confinement fusion implosions on OMEGA with cryogenic deuterium–tritium targets. The steady-state model assumes an optically thin plasma and the data from four x-ray diagnostics along quasi-orthogonal lines of sight are used to obtain a tomographic reconstruction of the hot spot. A quantitative analysis of the hot-spot shape is achieved by projecting the x-ray emission into the diagnostic planes and comparing this projection to the measurem
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13

Lettry, J., A. Vnuchenko, S. Bertolo, et al. "Correlation of H- beam properties to Cs-coverage." Journal of Instrumentation 18, no. 06 (2023): C06023. http://dx.doi.org/10.1088/1748-0221/18/06/c06023.

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Abstract A caesiated RF driven source delivers H- ions that, after stripping at the end of the 160 MeV H- linear injector, provides protons to CERN's accelerator complex including LHC, where the protons reached a record energy of 6.8 TeV. In Caesiated RF sources, H- ions are produced via dissociative attachment of electrons onto roto-vibrationally excited H2-molecules (volume) and re-emission as negative ions of protons or hydrogen atoms colliding on a low work function caesiated molybdenum plasma electrode (surface). During initial caesiation, the production mechanism evolves from the initial
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14

Singh, A. K., A. K. Sinha, R. Rajaram, and B. M. Pathan. "Storm-time longitudinally propagating asymmetric modes at low latitudes." Annales Geophysicae 30, no. 1 (2012): 131–41. http://dx.doi.org/10.5194/angeo-30-131-2012.

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Abstract. The westward flowing toroidal ring current at about 2–7 RE in the Earth's equatorial plane consists of symmetric and asymmetric parts. Zonal mean of H disturbances from longitudinally distributed low latitude stations represents the symmetric contribution, whereas departure from the zonal mean gives local time dependent asymmetric component at each of the stations. Through a standard analysis of closely spaced low latitude geomagnetic data we demonstrate 24 h periodicity in the asymmetric component of the storm-time ring current, which is related to the changing local time due to rot
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15

Giovannettone, Jason P., and Ana P. Barros. "A Remote Sensing Survey of the Role of Landform on the Organization of Orographic Precipitation in Central and Southern Mexico." Journal of Hydrometeorology 9, no. 6 (2008): 1267–83. http://dx.doi.org/10.1175/2008jhm947.1.

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Abstract Data from NASA’s TRMM satellite and NOAA’s GOES satellites were used to survey the orographic organization of cloud precipitation in central and southern Mexico during the monsoon with two main objectives: 1) to investigate large-scale forcing versus local landform controls, and 2) to compare the results with previous work in the Himalayas. At large scales, the modes of spatial variability of cloudiness were estimated using the empirical orthogonal function (EOF) analysis of GOES brightness temperatures. Terrain modulation of synoptic-scale high-frequency variability (3–5- and 6–9-day
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16

Yang, Fuxiang, Fangchao Dang, Xingjun Ge, Juntao He, Jinchuan Ju, and Xiaoping Zhang. "Excitation and suppression of asymmetric modes in a coaxial relativistic klystron amplifier with cascaded single-gap bunching cavities." AIP Advances 12, no. 11 (2022): 115219. http://dx.doi.org/10.1063/5.0112068.

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The excitation and suppression of asymmetric modes in a coaxial relativistic klystron amplifier (RKA) with cascaded single-gap bunching cavities are analyzed in this paper. Through theoretical analysis and simulated verification, we find that the asymmetric modes of cascaded single-gap bunching cavities have low external quality factors, the same resonant frequencies, and negative beam-loading conductance ratios so that they are easily excited by the electron beam. To solve this issue, a feasible method is proposed in this paper to suppress the asymmetric modes of cascaded single-gap bunching
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17

Moënne-Loccoz, Victor, Isabelle Trébinjac, Nicolas Poujol, and Pierre Duquesne. "Low frequency stall modes of a radial vaned diffuser flow." Mechanics & Industry 20, no. 8 (2019): 805. http://dx.doi.org/10.1051/meca/2020026.

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The present paper aims at providing an experimental analysis of the path to surge of a centrifugal compressor stage designed and built by Safran Helicopter Engines. Depending on the rotation speed of the compressor, two distinct flow patterns are observed in the radial diffuser at stabilized operating points near the surge, an asymmetric and a symmetric pattern. At medium rotation speed, the alternate pattern consisting of a two-channel pattern in the radial diffuser develops. One passage over two is stalled, the adjacent passage is free and this pattern replicates over the whole circumference
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18

CHANG, NGEE-PONG, DA-XI LI, and J. PÉREZ MERCADER. "ON THE ZERO COSMOLOGICAL CONSTANT SUGRA AND THE ASYMMETRIC ORBIFOLD." International Journal of Modern Physics A 04, no. 02 (1989): 287–326. http://dx.doi.org/10.1142/s0217751x89000121.

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In this paper, we give a brief review of the orbifold compactification of Superstrings and describe how the spectrum of zero-modes determines the structure of the 'low'-energy compactified theory. We show how the asymmetric orbifold can lead to a 'low'-energy N = 1 SUGRA theory that continues to have a zero cosmological constant even after supersymmetry is broken. We discuss the implications the asymmetric orbifold can have for a new scenario of the hierarchy of compactification scales.
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19

Wang, Zhi Hong, Dong Yan Xie, Bao He Yuan, et al. "Synthesis, Thermal Expansion Properties and Raman Spectroscopic Study of Ca1-xSrxZr4P6O24 Ceramics." Advanced Materials Research 415-417 (December 2011): 1023–27. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.1023.

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A simplified method with much lower time and energy costs is presented for the rapid synthesis of low thermal expansion materials of CaZr4P6O24, SrZr4P6O24 and their solid solution Ca0.5Sr0.5Zr4P6O24. The coefficients of thermal expansion of CaZr4P6O24, SrZr4P6O24 and Ca0.5Sr0.5Zr4P6O24 are measured to be -1.45×10-6, 2.1×10-6 and 0.26×10-6, respectively. Raman spectroscopic study confirms the formation of the solid solution of Ca0.5Sr0.5Zr4P6O24 though its symmetric and asymmetric stretching modes are obviously broadened with respect to those of CaZr4P6O24 and SrZr4P6O24 due to the lattice def
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20

Kholiddinov, I. Kh, G. F. Musinova, M. E. Yulchiev, Z. Z. Tuychiev, and M. M. Kholiddinova. "Modeling Of Calculation Of Voltage Unbalance Factor Using Simulink (Matlab)." American Journal of Engineering And Techonology 02, no. 10 (2020): 33–37. http://dx.doi.org/10.37547/tajet/volume02issue10-07.

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This paper presents the problem of power quality in asymmetric modes in low-voltage electrical networks. The modeling of determination of power value, voltages and currents and, accordingly, their symmetric components, using the Simulink package in the MatLab program is shown.
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21

Dey, Aniruddha, D. C. Biswas, A. Chakraborty, and S. Mukhopadhyay. "Excitation energy dependency of the low-energy fission dynamics: Probing through prompt gamma-ray spectroscopy." EPJ Web of Conferences 306 (2024): 01022. http://dx.doi.org/10.1051/epjconf/202430601022.

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Fission Fragment Spectroscopy (FFS) technique has been utilized to make simultaneous measurements of both the relative charge and mass yield distributions of even-even fission fragments produced from the fission of 236U at two different excitation energies, Eex. The necessary analysis has been carried out on the measured yield distributions by employing the Multimodal Random Neck Rupture Model (MM-RNRM). The relative contribution of two different types of asymmetric mode of fission – Standard I and Standard II has been extracted at Eex = 6.5 and 21.5 MeV. An attempt has been made to study the
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22

Mousa, Hana Mohammed. "Simulation of An Asymmetric TM Metamaterial Waveguide Absorber." JOURNAL OF ADVANCES IN PHYSICS 4, no. 3 (2014): 585–94. http://dx.doi.org/10.24297/jap.v4i3.2013.

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This paper tackles the simulation of an asymmetric  TM mode absorption  in a lossy metamaterial (left-handed) slab (LHM) sandwiched between a lossy substrate and coverd by a losseless dielectric cladding. The asymmetry solutions of the eigen value equation describe lossy –guided modes with complex –valued propagation constants . The dispersion relations , normalized field and the longitudinal attenuation were numerically solved for a given set of parameters: frequency range; film’s thicknesses; and TM mode order. I found out that high order modes which are guided in thinner films ar
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23

Bichurin, Mirza, Oleg Sokolov, Sergey Ivanov, et al. "Physics of Composites for Low-Frequency Magnetoelectric Devices." Sensors 22, no. 13 (2022): 4818. http://dx.doi.org/10.3390/s22134818.

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The article discusses the physical foundations of the application of the linear magnetoelectric (ME) effect in composites for devices in the low-frequency range, including the electromechanical resonance (EMR) region. The main theoretical expressions for the ME voltage coefficients in the case of a symmetric and asymmetric composite structure in the quasi-static and resonant modes are given. The area of EMR considered here includes longitudinal, bending, longitudinal shear, and torsional modes. Explanations are given for finding the main resonant frequencies of the modes under study. Compariso
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24

Nolasco, Mariela M., Paulo J. A. Ribeiro-Claro, and Pedro D. Vaz. "Vibrational Dynamics in crystalline 4-(dimethylamino) benzaldehyde: Inelastic Neutron Scattering and Periodic DFT Study." Materials 15, no. 2 (2022): 475. http://dx.doi.org/10.3390/ma15020475.

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The structure and dynamics of crystalline 4-(dimethylamino) benzaldehyde, 4DMAB, are assessed through INS spectroscopy combined with periodic DFT calculations. The excellent agreement between experimental and calculated spectra is the basis for a reliable assignment of INS bands. The external phonon modes of crystalline 4DMAB are quite well described by the simulated spectrum, as well as the modes involving low-frequency molecular vibrations. Crystal field splitting is predicted and observed for the modes assigned to the dimethylamino group. Concerning the torsional motion of methyl groups, fo
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25

Dai, Peng, Shuyu Liu, Shiqi Fang, and Zheng Gong. "Optimal Asymmetric Duty Modulation for Dual Active Bridge Converters with DC Blocking Capacitors." Energies 16, no. 18 (2023): 6674. http://dx.doi.org/10.3390/en16186674.

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Aiming at the optimization of current stress with low voltage ratio and full ZVS, a control method combining variable duty cycle and phase shift was proposed based on dual active bridge (DAB) converters with DC blocking capacitors. By adding DC bias to the DC blocking capacitors, asymmetric duty modulation (ADM) can adjust the bias as needed. Based on the theoretical analysis of steady-state operation, the operating modes can be divided into eight modes. According to the features of each mode, equivalent circuits are established. The transmission power and the boundary of zero-voltage-switchin
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26

Bichurin, Mirza, Oleg Sokolov, Sergey Ivanov, et al. "Modeling the Converse Magnetoelectric Effect in the Low-Frequency Range." Sensors 24, no. 1 (2023): 151. http://dx.doi.org/10.3390/s24010151.

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This article is devoted to the theory of the converse magnetoelectric (CME) effect for the longitudinal, bending, longitudinal-shear, and torsional resonance modes and its quasi-static regime. In contrast to the direct ME effect (DME), these issues have not been studied in sufficient detail in the literature. However, in a number of cases, in particular in the study of low-frequency ME antennas, the results obtained are of interest. Detailed calculations with examples were carried out for the longitudinal mode on the symmetric and asymmetric structures based on Metglas/PZT (LN); the bending mo
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27

Solway, J., T. H. Rossing, A. F. Saari, and J. M. Drazen. "Expiratory flow limitation and dynamic pulmonary hyperinflation during high-frequency ventilation." Journal of Applied Physiology 60, no. 6 (1986): 2071–78. http://dx.doi.org/10.1152/jappl.1986.60.6.2071.

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Dynamic hyperinflation of the lungs occurs during high-frequency oscillatory ventilation (HFOV) and has been attributed to asymmetry of inspiratory and expiratory impedances. To identify the nature of this asymmetry, we compared changes in lung volume (VL) observed during HFOV in ventilator-dependent patients with predictions of VL changes from electrical analogs of three potential modes of impedance asymmetry. In the patients, when a fixed oscillatory tidal volume was applied at a low mean airway opening pressure (Pao), which resulted in little increase in functional residual capacity, progre
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28

Denisov, V. N., A. A. Zakhidov, R. Danieli, et al. "EVIDENCE FOR JAHN-TELLER COUPLING AND FANO RESONANCE OF LOWER Hg MODES IN K3C60 AND Rb3C60 FILMS FROM RAMAN SCATTERING." International Journal of Modern Physics B 06, no. 23n24 (1992): 4019–24. http://dx.doi.org/10.1142/s0217979292002127.

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The Raman scattering study of superconducting thin films of A 3 C 60 (A=K,Rb) carried out upon laser excitations at 1.16 and 2.41 eV have revealed the significant broadening and Fano-lineshapes of several low energy H g intramolecular modes with relative intensities and widths depending on excitation energies. The most interesting feature of the 1.16 eV excited spectrum is the wide asymmetric band at 400 cm −1 which can be assigned by Fano-shape fitting to enormously broadened H g (2) mode red shifted compared to its bare frequency of 408 cm −1. The narrowing of all lower H g modes in insulati
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29

GRANADO-CRIADO, JOSE M., MIGUEL A. VEGA-RODRÍGUEZ, JOSE M. CHAVES-GONZALEZ, JUAN M. SANCHEZ-PEREZ, and JUAN A. GOMEZ-PULIDO. "LOW POWER CONSUMPTION SECURITY PLATFORM FOR INDUSTRIAL COMMUNICATIONS USING AN MPSOC." Journal of Circuits, Systems and Computers 22, no. 05 (2013): 1350029. http://dx.doi.org/10.1142/s0218126613500291.

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This work presents a novel security platform for industrial communications using a nine-MicroBlaze MPSoC. This platform has low power consumption and cost, therefore, it is very appropriate for embedded systems, where restrictions on cost and power consumption have to be fulfilled. This system uses the RSA asymmetric algorithm combined with the AES symmetric algorithm, which was developed using two encryption modes, ECB and CBC. In this way, the platform makes possible to combine different algorithms and modes in function of the necessities of speed and security required. Furthermore, due to t
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30

Naumov, Igor V., Sergey V. Podyachikh, and Andrey V. Bastron. "The Power Quality Improving and its Losses Reducing with Balancing Devices." IOP Conference Series: Earth and Environmental Science 979, no. 1 (2022): 012160. http://dx.doi.org/10.1088/1755-1315/979/1/012160.

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Abstract The method, algorithms, modeling, calculations and analysis the 0.38 kV electric network operation with unbalancing power consumption are considered. It is noted that the 0.38 kV electric networks, being electric low observability networks, are largely characterized by low power quality, which is accompanied by additional losses. An electric network model with a distributed load is presented. The current and voltage asymmetry indicators calculating method is developed, and the specialized balancing device parameters are determined. Bas ed on the obtained expressions, using Matlab tech
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31

Ly, Anh Hung, and Quang Doan Le. "Geometrical effect on behavior of thin-walled cylindrical tubes subjected to low velocity impact load." Science and Technology Development Journal 19, no. 3 (2016): 34–42. http://dx.doi.org/10.32508/stdj.v19i3.550.

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Geometrical effect on deformation of thinwalled cylindrical tubes subjected to low velocity impact load is conducted using numerical simulation. The cylindrical tube models are made by 6060-T5 Aluminum with difference of diameter (D), thickness (h) and length (L). If ratios of D/h and L/D are changed, deformation modes are also varied as symmetric, asymmetric, mix or buckling. Two sets of trigger applied to model to activate deformation modes. Results obtained from numerical simulation agree very well with experimental results published in the international journal articles. The formula indica
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Albertsson, Martin, B. Gillis Carlsson, Thomas Døssing, Peter Möller, Jørgen Randrup, and Åberg Sven. "Fission modes in fermium isotopes with Brownian shape-motion model." EPJ Web of Conferences 223 (2019): 01002. http://dx.doi.org/10.1051/epjconf/201922301002.

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Fission-fragment mass and total-kinetic-energy distributions following fission of the fermium isotopes 256,258,260Fm at low excitation energy have been calculated using the Brownian shape-motion model. A transition from asymmetric fission in 256Fm to symmetric fission in 258Fm is obtained. The total-kinetic-energy distributions for the three isotopes show radically different behaviour due to varying contributions from different fission modes, with a double-humped distribution for 258Fm.
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33

Wang, Yang, and Sonya Legg. "Enhanced Dissipation of Internal Tides in a Mesoscale Baroclinic Eddy." Journal of Physical Oceanography 53, no. 10 (2023): 2293–316. http://dx.doi.org/10.1175/jpo-d-23-0045.1.

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Abstract The dissipation of low-mode internal tides as they propagate through mesoscale baroclinic eddies is examined using a series of numerical simulations, complemented by three-dimensional ray tracing calculations. The incident mode-1 internal tide is refracted into convergent energy beams, resulting in a zone of reduced energy flux in the lee of the eddy. The dissipation of internal tides is significantly enhanced in the upper water column within strongly baroclinic (anticyclonic) eddies, exhibiting a spatially asymmetric pattern, due to trapped high-mode internal tides. Where the eddy ve
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34

Orobengoa, Danel, Cesar Capillas, Mois I. Aroyo, and J. Manuel Perez-Mato. "AMPLIMODES: symmetry-mode analysis on the Bilbao Crystallographic Server." Journal of Applied Crystallography 42, no. 5 (2009): 820–33. http://dx.doi.org/10.1107/s0021889809028064.

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AMPLIMODESis a computer program available on the Bilbao Crystallographic Server that can perform a symmetry-mode analysis of any distorted structure of displacive type. The analysis consists in decomposing the symmetry-breaking distortion present in the distorted structure into contributions from different symmetry-adapted modes. Given the high- and the low-symmetry structures,AMPLIMODESdetermines the atomic displacements that relate them, defines a basis of symmetry-adapted modes, and calculates the amplitudes and polarization vectors of the distortion modes of different symmetry frozen in th
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35

Кочаровская, Е. Р., та Вл В. Кочаровский. "Структура и особенности автомодуляции сверхизлучательных состояний в асимметричном резонаторе Фабри-Перо". Физика и техника полупроводников 57, № 5 (2023): 348. http://dx.doi.org/10.21883/ftp.2023.05.56202.29k.

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The dependence of the structure and stability of strongly asymmetric stationary states of a superradiant laser with a slightly asymmetric low-Q Fabry-Perot cavity on its length, reflection factors of mirrors, and pumping level is studied. The states are related to a self-consistent inhomogeneous half-wavelength population inversion grating. The possibility of the existence of two dynamic phase transitions from a stationary (monochromatic) state of this type to a nonstationary one is established: 1) a dissipative superradiant transition to a regime with a quasi-continuous lasing spectrum (in a
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36

Ibraheem AlQadi, Ibraheem AlQadi. "Investigation of Flow Around a Slender Body at High Angles of Attack." journal of King Abdulaziz University Engineering Sciences 30, no. 1 (2019): 51–61. http://dx.doi.org/10.4197/eng.30-1.4.

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A numerical investigation of flow around a slender body at high angles of attack is presented. Large eddy simulation of the flow around an ogive-cylinder body at high angles of attack is carried out. Asymmetric vortex flow was observed at angles of attack of α = 55◦ and 65◦ . The results showed that the phenomenon is present in the absence of artificial geometrical or flow perturbation. Contrary to the accepted notion that flow asymmetry is due to a convective instability, the development of vortex asymmetry in the absence of perturbations indicates the existence of absolute instability. An in
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37

GUBANKOVA, ELENA. "EXOTIC SUPERFLUIDITY IN COLD ATOMS." International Journal of Modern Physics A 25, no. 02n03 (2010): 637–46. http://dx.doi.org/10.1142/s0217751x10048925.

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We derived the low energy effective action for the collective modes in asymmetric fermionic systems with attractive interaction. We obtained the phase diagram in terms of the chemical potentials. It features a stable gapless superfluidity with one Fermi surface on the BEC side of the resonance. Also we predict a sharp increase in outer core of a vortex, i.e. vortex size, upon entering into the gapless phase. This may serve as a signature of a gapless phase.
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38

Gnezdilov, V. P., V. V. Eremenko, V. S. Kurnosov, and V. I. Fomin. "Raman spectroscopy in the crystal CsMnCl3·2H2O." Soviet Journal of Low Temperature Physics 17, no. 5 (1991): 331–35. https://doi.org/10.1063/10.0032832.

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Low-temperature polarized Raman spectra of the quasi-one-dimensional chain antiferromagnet CsMnCl3·2H2O are studied. The fundamental vibration frequencies of the crystal in the interval 0–350 cm−1 are determined. Group theory analysis of the vibrational modes of the crystal lattice is carried out, and a partial assignment of the observed lines is made. A weak temperature-dependent asymmetric wide band is observed and attributed to the two-magnon scattering of light in CsMnCl3·2H2O.
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39

Miller, D. R., O. H. Han, and P. W. Bohn. "Quantitative Raman Spectroscopy of Homogeneous Molecular Profiles in Optical Waveguides via Direct Measurement." Applied Spectroscopy 41, no. 2 (1987): 245–48. http://dx.doi.org/10.1366/000370287774986886.

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Quantitative measurements of Raman scattering from three-layer asymmetric slab dielectric waveguides made of organic macromolecular materials have been obtained from homogeneous distributions of scatterers as a function of mode by direct measurement of all mode-dependent quantities. For low-order modes, precision of the Raman intensity is limited to ∼5% by uncertainty in the measurement of the coupling coefficient, γ; while for high-order modes, precision was limited at the same level by uncertainty in the integrated electric field due to film-thickness variations. Observation of Raman instead
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40

Кочаровская, Е. Р., А. В. Мишин, Вл В. Кочаровский та В. В. Кочаровский. "Поляритонный резонанс в автомодуляции асимметричного состояния сверхизлучающего лазера". Физика и техника полупроводников 56, № 7 (2022): 651. http://dx.doi.org/10.21883/ftp.2022.07.52755.10.

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Based on the numerical solution to the semiclassical Maxwell-Bloch equations in a one-dimensional model of a superradiant laser with a low-Q symmetric Fabry-Perot cavity, a comparative analysis of the spectrum of polariton modes of the linearized problem and the discrete spectrum of the of quasi-monochromatic generation with weak self-modulation under the condition of strong spontaneous mirror symmetry breaking of the counterpropagating electromagnetic waves, population inversion and polarization of an active medium is carried out. It is shown that the main frequencies of resonant self-modulat
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41

A, Manoranjan, and Christober Asir Rajan C. "Design and Analsyis of 31-Level Asymmetric Cascaded H-Bridge Multilevel Inverter with Reduced Number of Switches." Bulletin of Scientific Research 2, no. 2 (2020): 14–28. http://dx.doi.org/10.34256/bsr2023.

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A new multilevel inverter with less no of power switches is proposed. This is based on cascaded H-bridge topology. The design and analysis of 31-level reduced switch inverter with different modes of operation are presented in this paper. The proposed inverter is asymmetric in nature and it uses unequal DC voltage sources. PD-PWM modulation technique has been used here to get proper switching. The proposed idea has been validated through simulation and the received results provides better efficiency, less low order harmonics and less switching losses.
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42

Lanzerstorfer, Daniel, and Hendrik C. Kuhlmann. "Global stability of multiple solutions in plane sudden-expansion flow." Journal of Fluid Mechanics 702 (May 16, 2012): 378–402. http://dx.doi.org/10.1017/jfm.2012.184.

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AbstractThe two-dimensional, incompressible flow in a plane sudden expansion is investigated numerically for a systematic variation of the geometry, covering expansion ratios (steps-to-outlet heights) from $0. 25$ to $0. 95$. By means of a three-dimensional linear stability analysis global temporal modes are scrutinized. In a symmetric expansion the primary bifurcation is stationary and two-dimensional, breaking the mirror symmetry with respect to the mid-plane. The secondary asymmetric flow experiences a secondary instability to different three-dimensional modes, depending on the expansion ra
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43

LI, TIANJUN, and WEI LIAO. "LOW ENERGY GAUGE UNIFICATION THEORY." Modern Physics Letters A 17, no. 36 (2002): 2393–407. http://dx.doi.org/10.1142/s0217732302009131.

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Because of the problems arising from the fermion unification in the traditional grand unified theory and the mass hierarchy between the four-dimensional Planck scale and weak scale, we suggest the low energy gauge unification theory with low high-dimensional Planck scale. We discuss the nonsupersymmetric SU(5) model on M4 × S1/Z2 × S1/Z2 and the supersymmetric SU(5) model on M4 × S1/(Z2 × Z2′) × S1/(Z2 × Z2′). The SU(5) gauge symmetry is broken by the orbifold projection for the zero modes, and the gauge unification is accelerated due to the SU(5) asymmetric light KK states. In our models, we
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44

Katsumoto, Yukiteru, Daisuke Adachi, Harumi Sato, and Yukihiro Ozaki. "Usefulness of a Curve Fitting Method in the Analysis of Overlapping Overtones and Combinations of CH Stretching Modes." Journal of Near Infrared Spectroscopy 10, no. 1 (2002): 85–91. http://dx.doi.org/10.1255/jnirs.325.

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This paper reports the usefulness of a curve fitting method in the analysis of NIR spectra. NIR spectra in the 7500–5500 cm−1 (1333–1818 nm) region were measured for water–methanol, water–ethanol and water–1-propanol mixtures with alcohol concentrations of 0–100 wt% at 25°C. The 6000–5600 cm−1 (1667–1786 nm) region, where the overtones and combinations of CH3 and CH2 stretching modes are expected to appear, shows significant band shifts with the increase in the alcohol content. To analyse the concentration-dependent spectral changes, a curve fitting method was utilised, and the results were co
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45

Pysarenko, O. "DISPERSION OF LAMB WAVES IN MULTILAYER STRUCTURES." Mechanics And Mathematical Methods 6, no. 2 (2024): 124–35. http://dx.doi.org/10.31650/2618-0650-2024-6-2-124-135.

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Low cost, the possibility of online monitoring and high sensitivity distinguish the method of structural monitoring using Lamb waves from other available methods. Structural analysis based on Lamb waves in heterogeneous materials requires fundamental knowledge of the behavior of Lamb waves in such materials. This basic knowledge is critical for signal processing in determining possible damage that can be detected by the propagating wave. Recently, Lamb wave methods have been used to simultaneously survey large areas of composite structures. However, such methods are more complex than tradition
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46

Antonov, Alexander I., Dmitry Yu Rudy, Alexander A. Ruppel, and Elena Yu Ruppel. "CONSIDERATION OF THE CRITERION OF THE INFLUENCE OF ASYMMETRIC LOAD ON VOLTAGE DISTORTION IN A 10 kV NETWORK FOR RECOMMENDATIONS FOR REDUCING VOLTAGE ASYMMETRY." Vestnik Chuvashskogo universiteta, no. 3 (September 29, 2022): 12–20. http://dx.doi.org/10.47026/1810-1909-2022-3-12-20.

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To date, there is a fairly large number of electrical equipment that is a source of asymmetric modes of operation in medium and low voltage electrical networks. This electrical equipment can create conductive low-frequency electromagnetic interference in electrical networks by the coefficient of voltage asymmetry in the reverse sequence. Studying the methodological basis of research on the theory of conductive low-frequency interference, it was found that when switching from one adjacent electrical network to another (for example, from a 0.4 kV network to a 10 kV network and vice versa) potent
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47

Subramaniam, S., M. J. Lance, C. J. Rawn, B. C. Chakoumakos, and A. J. Rondinone. "Raman spectroscopic studies on structure I and structure IItrimethylene oxide hydrate." Canadian Journal of Physics 83, no. 9 (2005): 941–49. http://dx.doi.org/10.1139/p05-040.

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Raman spectra were collected from structure I (sI) and structure II (sII) trimethylene oxide (TMO) hydrates at various temperatures and used to assign the vibrational modes, investigate the ordering of TMO molecules inside the cage structure, and to determine possible interactions between the guest and the host lattice. Only Raman spectra from sI hydrate could be analyzed since the low concentration of TMO prevented sII peaks from being resolved. Comparison of the Raman spectra of liquid, solid, and enclathrated TMO (sI) showed Raman shifts to higher wave numbers for the enclathrated TMO; main
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48

Krishnan, Hrisheekesh, Amit Agrawal, and Atul Sharma. "On the wake response of a square cylinder subjected to an inline nonharmonic forcing." AIP Advances 12, no. 8 (2022): 085225. http://dx.doi.org/10.1063/5.0092386.

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In this work, we study the effect of two spectrally simple nonharmonic inline forcing waveforms on the wake response of a square cylinder. The characteristics of wake response under nonharmonic forcing were studied and compared to wake response under harmonic forcing for a constant Reynolds number 100. By varying the relative strength of the spectral components and the secondary frequency of the nonharmonic forcing of the inflow, an asymmetric modulated wake and an asymmetric 2P + 2S wake were observed for a two-tone nonharmonic forcing. These modes combine the features of the wake response of
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49

Karushkin, M., and V. Rukyn. "ASYMMETRIC SLOT LINES FOR CREATING MILLIMETER-WAVE SEMICONDUCTOR COMPONENTS." Radio physics and radio astronomy 30, no. 2 (2025): 120–28. https://doi.org/10.15407/rpra30.02.120.

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Subject and Purpose. Creating hybrid-integrated semiconductor components in the millimeter wave range implies simplified manufacturing technology and reduced labor intensity. At the same time, these components offer the potential for improved electrical parameters compared to the waveguide counterparts. The article aims to explore methods for creating millimeter-wave devices using a waveguide asymmetric slot line combined with an asymmetric stripline accommodating active semiconductor structures. Methods and Methodology. The development of millimeter-wave hybrid-integrated semiconductor active
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50

Guan, Xueyuan, Shunshun Tong, Jianfeng Wang, Xiangjun Zhang, and Yushun Liu. "High Gain Millimeter-Wave Transmitarray Antenna Based on Asymmetric U-Shaped Metasurface Using Characteristic Mode Analysis." International Journal of RF and Microwave Computer-Aided Engineering 2023 (February 9, 2023): 1–8. http://dx.doi.org/10.1155/2023/6513623.

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An asymmetric U-shaped millimeter-wave (MMW) metasurface (MS) transmitarray (TA) antenna is proposed based on characteristic mode analysis (CMA). The CMA of U-type unit shows two modes in the required frequency band and excites these two modes with a certain phase difference, so that the transmittance of the unit in the working band is greater than 0.8. The difference of lens unit is 360° by controlling the size change of the unit, and the transmission array is designed according to the phase distribution of the array. Through optimization simulation, the total size of the lens is 92.4 × 92.4
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