Relevant bibliographies by topics / Harmonic ratios

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Harmonic ratios'

Author: Grafiati
Published: 10 September 2021
Last updated: 6 February 2022

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Journal articles on the topic "Harmonic ratios"

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Logunov, Alexander, and Eugenia Malinnikova. "On ratios of harmonic functions." Advances in Mathematics 274 (April 2015): 241–62. http://dx.doi.org/10.1016/j.aim.2015.01.009.

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Iyigün, Esen. "Constant curvature ratios in L6." Filomat 30, no. 3 (2016): 785–89. http://dx.doi.org/10.2298/fil1603785i.

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In this paper, we find a relation between Frenet formulas and harmonic curvatures, and also a relation between Frenet formulas and e-curvature functions of a curve of osculating order 6 in 6 dimensional Lorentzian space L6. Moreover, we give a relation between harmonic curvatures and ccr-curves of a curve in L6.
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Bartley, Samantha S., Thomas A. Burke, Rachael C. Quandt, and Brandon Forshey. "59 The effects of audio exposure to goat kids’ relative intensity ratios of harmonics from birth to weaning." Journal of Animal Science 98, Supplement_3 (2020): 149–50. http://dx.doi.org/10.1093/jas/skaa054.263.

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Abstract This study evaluated the effects of exposure to sound stimuli on goat kids’ relative intensity ratios (RIR) of harmonics one through five from d 0 to d 49 of growth. RIR are the ratio between a harmonic and the first harmonic. Day zero boer kids were randomly assigned to three treatment groups: treatment 1 (n=5) was only exposed to a single human voice recording, treatment 2 (n=4) was exposed to their boer dams, and treatment 3 (n=4) was exposed to no vocalizations. Each group was housed in pens (2.44 x 3.05 m) and received the same diets, which met or exceeded NRC requirements. The k
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Lowry, Kristin A., Ann L. Smiley-Oyen, Andrew J. Carrel, and John P. Kerr. "Walking stability using harmonic ratios in Parkinson's disease." Movement Disorders 24, no. 2 (2008): 261–67. http://dx.doi.org/10.1002/mds.22352.

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van Doesburgh, Marieke, and Michiel van der Klis. "Centroid frequency ratios of simultaneous low-frequency QPOs in black hole low-mass X-ray binaries." Monthly Notices of the Royal Astronomical Society 496, no. 4 (2020): 5262–81. http://dx.doi.org/10.1093/mnras/staa1867.

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ABSTRACT We measure the centroid frequency ratios of simultaneous quasi-periodic oscillations (QPOs) that occur at low frequency (0.1–30 Hz) in a selection of accreting black hole (BH) low-mass X-ray binaries. We use all data in the RXTE archive on GX 339–4, GRO J1655–40, 4U 1630–47, XTE J1550–564, and H 1743–322. We select the power spectra that show at least two simultaneous QPOs, and empirically divide them into four main categories, whose occurrence correlates systematically to X-ray spectral state. In the hard/hard-intermediate state, all sources show sets of QPO peaks with near-harmonic
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Provencher, Pierre, Christian-Yves Côté, and Marguerite-Marie Denariez-Roberge. "Surface second-harmonic susceptibility determined by noncollinear reflected second-harmonic generation." Canadian Journal of Physics 71, no. 1-2 (1993): 66–69. http://dx.doi.org/10.1139/p93-010.

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We investigate the noncollinear reflected second-harmonic generation (SHG) for monolayers of Rhodamine 6G adsorbed on fused silica. We show that the ratios between the surface molecular χ(2) components can be related to the values of the polarization angles of the two incident beams when minima of the resulting SHG intensity are obtained.
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Bellanca, J. L., K. A. Lowry, J. M. VanSwearingen, J. S. Brach, and M. S. Redfern. "Harmonic ratios: A quantification of step to step symmetry." Journal of Biomechanics 46, no. 4 (2013): 828–31. http://dx.doi.org/10.1016/j.jbiomech.2012.12.008.

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Logunov, Alexander, and Eugenia Malinnikova. "Ratios of harmonic functions with the same zero set." Geometric and Functional Analysis 26, no. 3 (2016): 909–25. http://dx.doi.org/10.1007/s00039-016-0369-4.

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Korakianitis, T. "On the Prediction of Unsteady Forces on Gas Turbine Blades: Part 2—Analysis of the Results." Journal of Turbomachinery 114, no. 1 (1992): 123–31. http://dx.doi.org/10.1115/1.2927975.

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This article investigates the generation of unsteady forces on turbine blades due to potential-flow interaction and viscous-wake interaction from upstream blade rows. A computer program is used to calculate the unsteady forces on the rotor blades. Results for typical stator-to-rotor-pitch ratios and stator outlet-flow angles show that the first spatial harmonic of the unsteady force may decrease for higher stator-to-rotor-pitch ratios, while the higher spatial harmonics increase. This (apparently counterintuitive) trend for the first harmonic, and other blade row interaction issues, are explai
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Brown, Judith C. "Measurement of harmonic ratios of sounds produced by musical instruments." Journal of the Acoustical Society of America 95, no. 5 (1994): 2889. http://dx.doi.org/10.1121/1.409369.

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Dissertations / Theses on the topic "Harmonic ratios"

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Raimundo, Nuno de Mendonça Freire Nogueira. "A harmonia musical da arquitectura de seiscentos. Análise e intervenção no Convento de Santa Marta." Master's thesis, Universidade de Lisboa. Faculdade de Arquitetura, 2014. http://hdl.handle.net/10400.5/7182.

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Abdulahi, Mohamed Abdirahman, and Wännström Aksel. "Quality Control of Light Emitting Diodes : Using power factor, harmonic distortion and light to power ratios." Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-301196.

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This study addresses quality control for Light Emitting Diodes (LED) according to fouraspects, the power factor of LED lamps, their harmonics and total harmonic distortion (THD), the luminosity for total power to radiated power ratio. It focuses on four brands and six different LED lamps, and concludes that IKEA's LED lamps pertain as the quality lamp, with a power factor over 0.9, THD less than 4% and a power to radiated light of over 4%.
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Allen, Jamie. "Instrumentation for HARMONI and the mass ratios of ring galaxy systems." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:3df69b43-eb71-4931-b3cf-722c2612f422.

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HARMONI is the visible and near-infrared integral field spectrograph due to be one of the first light instruments on the European Extremely Large Telescope. The prototype HARMONI lens mounts were cryogenically tested, to measure the radial decentre of the lens as it was cooled to 130 K. Initial problems of the epoxy cracking the lens were solved by switching to a silicone RTV adhesive. The lens in the baseline mount design was found to move radially by 18 μm: just below the tightest radial positioning tolerance. The Oxford SWIFT Spectrograph spare camera was rebuilt using lens mounts based on
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Lukáš, Jan. "Analýza vlivu tlumení na velikost odezvy při dynamickém buzení světlometu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-418211.

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The aim of the submitted diploma thesis is the magnitude determination of the headlamp response to the dynamic excitation. Currently it is necessary to measure this response, because it is one of the assessed criteria of quality of the headlamp. When comparing results of the experimental measurement and the computational modelling, a good consensus of resonant frequencies is observed, but there are significant differences in acceleration amplitudes. The cause of this is the variable damping value. The theoretical part of the thesis deals with polymeric materials, basics of oscillation and damp
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Hunt, Meredith M. "Perturbation and Harmonics to Noise Ratio as a Function of Gender in the Aged Voice." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338302926.

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Brimhall, Nicole. "Extreme Ultraviolet Polarimetry with Laser-Generated High-Order Harmonics: Characterization of Uranium." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/1824.

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We developed an extreme ultraviolet (EUV) polarimeter, which employs laser-generated high-order harmonics as the light source. This relatively high-flux, directional EUV source has available wavelengths between 10 nm and 47 nm with easily rotatable linear polarization. The polarimeter has allowed us to characterize the optical constants of materials that may be useful for EUV optics. The instrument has a versatile positioning system and a spectral resolution of about 180, and we have demonstrated that reflectance as low as 0.1% can be measured repeatably at EUV wavelengths. We investigate the
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Dušek, Samuel. "Techniky slučování kanálů za účelem zvýšení dynamického rozsahu kanálu s rozsahem ±10 V." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413045.

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Cílem této diplomové práce je změřit a vyhodnotit parametry techniky slučování kanálů, která je momentálně implementována v součástce AD7606C firmy Analog Devices. Poté, na základě výsledků z měření, navrhnout a odsimulovat několik možností, pomocí kterých by tato technika mohla dosahovat vyšších hodnot dynamického rozsahu a celkového harmonického zkreslení. V průběhů práce bylo zjištěno, že pomocí zvýšení zesílení kanálu s nižším rozsahem společně se snížením mezní frekvence celého signálového řetězce může tato technika dosahovat až 118.6 dB dynamického rozsahu, což je o 3.6 dB více, než bylo
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Soderquist, Daniel Robert. "Analysis of Distortion Transfer and Generation through a Fan and a Compressor Using Full-annulus Unsteady RANS and Harmonic Balance Approaches." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7401.

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Understanding distortion transfer and generation through fan and compressor blade rows is able to assist in blade design and performance prediction. Using full annulus unsteady RANS simulations, the effects of distortion as it passes through the rotor of a transonic fan at five radial locations (10%, 30%, 50%, 70%, and 90% span) are analyzed. The inlet distortion profile is a 90-degree sector with a 15% total pressure deficit. Fourier distortion descriptors are used in this study to quantitatively describe distortion transfer and generation. Results are presented and compared for three operati
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Gaspari, Andrea. "Valutazione della stabilità dinamica e del rischio di caduta tramite analisi della cinematica del COM: una revisione della letteratura." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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La principale causa di morte accidentale è la caduta, che colpisce per lo più soggetti fragili, anziani o affetti da particolari patologie più o meno invalidanti. Il verificarsi dell'evento avverso è conseguenza dello spostamento del centro di massa corporeo (COM) all'esterno della base di appoggio, che compromette l'equilibrio di tali soggetti con conseguente sviluppo di disturbi anche di natura psicologica legati al timore di cadere. Questo elaborato di tesi si pone come obiettivo quello di revisionare sistematicamente la letteratura che analizza la cinematica del COM e l'indice Harmonic Rat
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Pechloff, Alexander Nikolaus [Verfasser], Boris [Akademischer Betreuer] Laschka, Boris [Gutachter] Laschka, Lorenz [Gutachter] Tichy, and Christian [Gutachter] Breitsamter. "Small Disturbance Navier-Stokes Predictions of Low-Aspect-Ratio Wing Harmonic Loading / Alexander Nikolaus Pechloff ; Gutachter: Boris Laschka, Lorenz Tichy, Christian Breitsamter ; Betreuer: Boris Laschka." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1191369439/34.

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Books on the topic "Harmonic ratios"

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Reis, Helmut. Natur und Harmonik. Verlag für Systematische Musikwissenschaft, 1993.

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Reis, Helmut. Der goldene Schnitt und seine Bedeutung für die Harmonik. Verlag für Systematische Musikwissenschaft, 1990.

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Tenney, James. The Structure of Harmonic Series Aggregates. Edited by Larry Polansky, Lauren Pratt, Robert Wannamaker, and Michael Winter. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252038723.003.0011.

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James Tenney discusses the structure of harmonic series aggregates and provides a detailed explanation of the genesis of his HD function. He describes, through first principles (perception, simple mathematics), what happens when “two or more compound tones are sounded simultaneously.” Using simple properties of relatively prime (reduced) ratios, the harmonic series, and least common multiples and greatest common divisors, Tenney approaches harmony in the way he had suggested some thirty years earlier: “to start if possible at the very beginning, to clear the mind of loose ends whose origins ar
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Tenney, James. On “Crystal Growth” in Harmonic Space. Edited by Larry Polansky, Lauren Pratt, Robert Wannamaker, and Michael Winter. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252038723.003.0018.

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James Tenney talks about his “crystal growth” algorithm, an idea that suggests a new “harmonic syntax” for harmonic space. As a quantitative model, it is both suggestively rich for future composition and plausible as a description of the history of tonal expansion. In this algorithm, sets of points are chosen, one by one, in some n-dimensional harmonic space, under the condition that each new point must have the smallest possible sum of harmonic distances to all points already in the set. That is, at each successive stage in the growth of the harmonic lattice, the next ratio added to the set i
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Book chapters on the topic "Harmonic ratios"

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Harper, William, Bryce Hemsley Bennett, and Sreeram Valluri. "Unification and Support: Harmonic Law Ratios Measure the Mass of the Sun." In Logic and Philosophy of Science in Uppsala. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-015-8311-4_9.

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Todorčević, Vesna. "Distance Ratio Metric." In Harmonic Quasiconformal Mappings and Hyperbolic Type Metrics. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22591-9_4.

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Bäckström, Tom. "Signal Gain and Harmonics to Noise Ratio." In Signals and Communication Technology. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50204-5_8.

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Wang, Kai, and Zi-Qiang Zhu. "Influence of Airgap Flux Density Waveform on Optimal Split Ratio and Torque Density of SPM Machines." In Third Harmonic Utilization in Permanent Magnet Machines. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0629-7_5.

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Solynin, Alexander. "Asymptotic Ratio of Harmonic Measures of Sides of a Boundary Slit." In Trends in Mathematics. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70154-7_14.

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Murphy, Peter, and Olatunji Akande. "Cepstrum-Based Harmonics-to-Noise Ratio Measurement in Voiced Speech." In Nonlinear Speech Modeling and Applications. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11520153_9.

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Azzouz, Marouen, Begoña García Zapirain, Ibon Ruiz, and Amaia Méndez. "Oesophageal Voice Harmonic to Noise Ratio Enhancement over UMTS Networks Using Kalman-EM." In Advances in Computational Intelligence. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21501-8_33.

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Cheng, Jian, Botao Jiao, Yinan Guo, and Shijie Wang. "Ensemble Recognition Based on the Harmonic Information Gain Ratio for Unsafe Behaviors in Coal Mines." In Lecture Notes in Computer Science. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78811-7_39.

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Murphy, Peter J., and Olatunji O. Akande. "Cepstrum-Based Estimation of the Harmonics-to-Noise Ratio for Synthesized and Human Voice Signals." In Nonlinear Analyses and Algorithms for Speech Processing. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11613107_13.

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Moll, Konrad. "Deus Sive Harmonia Universalis Est Ultima Ratio Rerum: The Conception of God in Leibniz’s Early Philosophy." In The Young Leibniz and his Philosophy (1646–76). Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-017-3507-0_4.

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Conference papers on the topic "Harmonic ratios"

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Perez-Diaz, J. L., E. Diez-Jimenez, C. Cristache, et al. "Magnetic Non-Contact Harmonic Drive." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63718.

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The MAGDRIVE project, granted by the Space program of the EU-FP7, is developing a gear able to produce reduction ratios from 1 to several hundreds by means of magnetic teeth. The teeth, unlike the conventional gears, do not touch one to other. This makes that this gear does not need any kind of lubrication. In case that the maximum torque is passed over the axle simply clutches, but nothing breaks down. Therefore, it has an intrinsic antijamming characteristic. It is also reversible: it can reduce but also multiply the velocity. It can also go clockwise or anticlockwise. Ratio, maximum torque,
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Shahab, Shima, David Tan, and Alper Erturk. "Hydrodynamic Thrust Generation and Power Consumption Investigations for Piezoelectric Fins With Different Aspect Ratios." In ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-9093.

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Bio-inspired hydrodynamic thrust generation using piezoelectric transduction has recently been explored using Macro-Fiber Composite (MFC) actuators. The MFC technology strikes a balance between the actuation force and structural deformation levels for effective swimming performance, and additionally offers geometric scalability, silent operation, and ease of fabrication. Recently we have shown that mean thrust levels comparable to biological fish of similar size can be achieved using MFC fins. The present work investigates the effect of length-to-width (L/b) aspect ratio on the hydrodynamic th
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Zhao, Xiaodong, and Assimina A. Pelegri. "Contrast-Transfer Efficiency of Localized Harmonic Motion Imaging for Viscoelastic Soft Tissues: A Simulation Study." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89726.

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Numerous biomechanical imaging techniques have been proposed for tissue examination and detection of pathologies.. In this study, a finite element model is developed to investigate contrast-transfer efficiency of harmonic motion imaging for viscoelastic soft tissues. Direct-solution steady-state dynamic analysis is used to compute the dynamic displacement amplitude in finite element simulations. Then, the contrast-transfer efficiency of harmonic motion imaging is investigated for different inclusion to background contrast ratios. The effect of excitation frequency and material viscosity on con
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Weber, Kurt, Girish Modgil, Steve Gegg, Shyam Neerarambam, and Moujin Zhang. "Unsteady Flow Analysis and Vibratory Stress Predictions for a High Work Single Stage Turbine Blade." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69085.

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The flow field in High-Work Single-Stage (HWSS) turbines differs from traditional turbine flow fields. Operating at increased pressure ratios, wakes and trailing edge shocks at the exit of the vane are more likely to cause a vibratory response in the rotating blade. This flow field can produce increased excitation at harmonics that correspond to the vane passing frequency and harmonics higher than the vane passing frequency. In this paper, blade vibratory stresses in a HWSS gas turbine stage are predicted using unsteady pressures from two Rolls-Royce in-house flow codes that employ different p
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Zhou, Gaoxin, and Zhi Gang. "Refined Algorithm for Solving High-Order Harmonics of Multi Group Neutron Diffusion Equation." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66098.

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In recent years, high order harmonic (or eigenvector) of neutron diffusion equation has been widely used in on-line monitoring system of reactor power. There are two kinds of calculation method to solve the equation: corrected power iteration method and Krylov subspace methods. Fu Li used the corrected power iteration method. When solving for the ith harmonic, it tries to eliminate the influence of the front harmonics using the orthogonality of the harmonic function. But its convergence speed depends on the occupation ratio. When the dominant ratios equal to 1 or close to 1, convergence speed
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Capecchi, Danilo, Renato Masiani, and Fabrizio Vestroni. "Response of Hysteretic Multidegree-of-Freedom Systems Using Harmonic Balance Method." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/vib-8087.

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Abstract This article illustrates the nonlinear response of a hysteretic two degree of freedom system. The constitutive laws which define the force-displacement relation are based on a hysteretic model with Masing rules linked to a suitable nonlinear elastic model. Attention is focused on the periodic response, though an insight is also given to the non-periodic response. The method of analysis used is the harmonic balance with many components. Frequency-response curves are evaluated for different system characteristics. Ratios of small amplitude vibration frequency 3 and 2 are considered, wit
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Vilmin, S., E. Lorrain, and Ch Hirsch. "Application of a Nonlinear Harmonic Method to the Simulation of Clocking Effects." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59475.

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Pursuing higher levels of efficiency in turbomachines requires the capability to reproduce a fuller extent of the blade row interactions. This is especially true for the clocking phenomena, whose influence on the efficiency can be important. For instance, the efficiency variation over a set of relative positions between two successive stators could reach 1 to 2% in high pressure turbines (Huber et al, 1996, Haldeman et al, 2004). The simulation of these complex effects still relies on time-dependent methods for the reproduction of the unsteadiness and its impact onto the time-mean flow. The no
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Mayorca, Mari´a A., Jesu´s A. De Andrade, Damian M. Vogt, Hans Ma˚rtensson, and Torsten H. Fransson. "Effect of Scaling of Blade Row Sectors on the Prediction of Aerodynamic Forcing in a Highly-Loaded Transonic Compressor Stage." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59601.

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An investigation of the sensitivity of a geometrical scaling technique on the blade forcing prediction and mode excitability has been performed. A stage of a transonic compressor is employed as test object. A scaling ratio is defined which indicates the amount of scaling from the original geometry. Different scaling ratios are selected and 3D Navier Stokes unsteady calculations completed for each scaled configuration. A full annulus calculation (non-scaled) is performed serving as reference. The quantity of interest is the generalized force, which gives a direct indication of the mode excitabi
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Askari, Hassan, Zia Saadatnia, Davood Younesian, and Ebrahim Esmailzadeh. "Large Amplitude Free Vibration Analysis of Nanotubes Using Variational and Homotopy Methods." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12185.

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Linear theories are basically unable to model the dynamic behavior of nanotubes due to the large deflection/dimension ratios. In this paper the closed form expressions are obtained for the large-amplitude free vibration of nanotubes. The nonlinear governing differential-integral equation of motion is derived and solved using the Galerkin approach. The derived nonlinear differential equation is then solved using the Variational Approach (VA) and the Homotopy Analysis Method (HAM). The fundamental harmonic as well as higher-order harmonics are analytically obtained. The approximate solutions are
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Grimaldi, Antonio Maria, Simone Colantoni, Antonio Melani, and Pierre Manenc. "Determination of the Wake Frequency Contents for a Twin Shaft Gas Turbine Variable Nozzle Guided Vane." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46335.

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This paper focuses on improving maintenance techniques for GE twin shaft gas turbines equipped with variable Nozzle Guided Vanes (NGVs) by enhancing the ability to predict potentially harmful stimuli due to NGV misalignment. NGV, by varying the geometry, controls the energy split between the high-pressure turbine and power turbine, allowing higher operational flexibility and higher efficiency at partial load/speed. This flexibility is a requirement for GT mechanical drive applications. The alignment of the NGV according to specification is part of the GE procedure to guarantee reliable operati
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