Relevant bibliographies by topics / Amplitude and phase characteristics of signal

Contents

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

Academic literature on the topic 'Amplitude and phase characteristics of signal'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Amplitude and phase characteristics of signal"

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Gusenitsa, Yaroslav N., Aleksandr L. Snegirev, and Sergey A. Pokotilo. "Study of the characteristics of a radio photon device for determining the phase difference of a radar signals." Izmeritel`naya Tekhnika, no. 2 (2021): 38–42. http://dx.doi.org/10.32446/0368-1025it.2021-2-38-42.

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The paper considers the problem of accurate calculation of the phase of the radar signal in relation to the receiving phased antenna arrays. Methods for determining the phase difference based on a comparison of the received signal with the local oscillator signal are listed, as well as a method based on the use of a radio-photon analog-to-digital converter for the output signal of the receiving phased antenna array. Their disadvantages are indicated. A method and a radio photon device are proposed that are devoid of these disadvantages. The method allows you to calculate the phase difference o
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Artyushenko, V. M., and V. I. Volovach. "Determination of the Probability Density Function of the Mixture Signal and Additive Noise under Influence of Multiplicative Noise." Journal of Physics: Conference Series 2096, no. 1 (2021): 012154. http://dx.doi.org/10.1088/1742-6596/2096/1/012154.

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Abstract Issues related to effect of multiplicative (modulating) (otherwise amplitude distortions) and additive noises on processed signal are considered. Analysis of statistical characteristics of probability density function (PDF) of instantaneous signal values against background of modulating interference is carried out. Expressions of the joint PDF envelope, phase and instantaneous signal values are obtained, for the case of only phase distortions, as well as the case when fluctuations in amplitude and phase are independent of each other. It is noted that in the second case, with the indep
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Chai, Meng Yu, Li Chan Li, Yong Quan Li, Wen Jie Bai, and Quan Duan. "Investigation on Acoustic Emission Characteristics from Q345R during Fatigue Crack Propagation." Applied Mechanics and Materials 331 (July 2013): 61–64. http://dx.doi.org/10.4028/www.scientific.net/amm.331.61.

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The fatigue crack propagation process of specimen made from Q345R was monitored by acoustic emission (AE) equipment. The AE characteristic of the specimen generated during the fatigue crack propagation was obtained by parameter analysis method and wavelet transform method .The results show that the fatigue crack growth curve comprises four phases of the crack generation phase, the low-speed crack propagation phase, the high-speed crack propagation phase and the fracture phase, and the variation of signal parameters presents the similar tendency to the fatigue crack growth rate. The values of s
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Xie, Jingsong, Wei Cheng, Yanyang Zi, and Mingquan Zhang. "Phase-based spectrum analysis method for identifying weak harmonics." Journal of Vibration and Control 24, no. 23 (2018): 5585–96. http://dx.doi.org/10.1177/1077546318760904.

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Fault characteristic frequency extraction is an important means for the fault diagnosis of rotating machineries. Traditional signal processing methods commonly use the amplitude information of signals to detect damages. However, when the amplitudes of characteristic frequencies are weak, the recognition effects of traditional methods may be unsatisfactory. Therefore, this paper proposes the phase-based enhanced phase waterfall plot (EPWP) method and frequency equal ratio line (FERL) method for identifying weak harmonics. Taking a cracked rotor as an example, the characteristic frequency detect
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Akinin, K. P., V. G. Kireyev, I. S. Petukhov, A. A. Filomenko, and E. M. Mihailik. "FREQUENCY CHARACTERISTICS OF BRUSHLESS MAGNETOELECTRIC MOTORS OF RETURN-ROTARY MOTION." Praci elektrodinamiki Nacionalanoi akademii nauk Ukraini Institutu 2020, no. 57 (2020): 73–80. http://dx.doi.org/10.15407/publishing2020.57.073.

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n this paper, the frequency characteristics of a special brushless magnetoelectric motor of return-rotary motion with sinusoidal and rectangular forms of the carrier signal are investigated. The method of generating a feedback signal on the amplitude of the rotor shaft oscillations angle has been improved by fixing the value of the signal at the moment of reaching its amplitude. The method of calculating the control system of the oscillations angle amplitude is investigated based on the frequency characteristics of the open-loop system by setting the phase stability margin. Examples of the cal
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Nguyen, Anh Hong, Michael Rath, Erik Leitinger, Khang Van Nguyen, and Klaus Witrisal. "Gaussian Process Modeling of Specular Multipath Components." Applied Sciences 10, no. 15 (2020): 5216. http://dx.doi.org/10.3390/app10155216.

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The consideration of ultra-wideband (UWB) and mm-wave signals allows for a channel description decomposed into specular multipath components (SMCs) and dense/diffuse multipath. In this paper, the amplitude and phase of SMCs are studied. Gaussian Process regression (GPR) is used as a tool to analyze and predict the SMC amplitudes and phases based on a measured training data set. In this regard, the dependency of the amplitude (and phase) on the angle-of-arrival/angle-of-departure of a multipath component is analyzed, which accounts for the incident angle and incident position of the signal at a
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Shi, Lei, Shurong Yuan, and Bo Yao. "Unconventionally Designed Tracking Loop Adaptable to Plasma Sheath Channel for Hypersonic Vehicles." Sensors 21, no. 1 (2020): 21. http://dx.doi.org/10.3390/s21010021.

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An aircraft that moves through the atmosphere at hypersonic speed is covered by plasma sheath, which causes random and fast time-varying amplitude attenuation and phase fluctuation in received signals. This paper comprehensively analyzes the mechanism of the amplitude attenuation effects on a traditional phase-locked loop (PLL), which is always ignored in traditional scenarios (such as satellite telemetry and vehicle communication). Simulation results and theoretical analysis showed that traditional PLL does not work reliably for signal carrier tracking with the severe time-varying amplitude a
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Yu, Liang Jun, Li Hua Sun, and Cui Cui Huang. "Design of Comprehensive Test Instrument Based on FPGA and Cortex-M0." Applied Mechanics and Materials 312 (February 2013): 583–87. http://dx.doi.org/10.4028/www.scientific.net/amm.312.583.

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The design consists of three modules: the voltage amplitude measurement module, the level oscillator module and the amplitude-frequency characteristic test module. The voltage amplitude measurement module uses AD817 to consist three-stage amplifier. The magnification of each level can be adjusted for 1 times/10 times. At the same time, the author uses the Cortex-M0 for controlling the relay switch to achieve automatic range conversion. The principle of DDS is adopted in the level oscillator module. FPGA is used for realizing the phase accumulator, the phase modulator, the sine ROM look-up tabl
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Kan, Valery, Michael E. Gorbunov, and Viktoria F. Sofieva. "Fluctuations of radio occultation signals in sounding the Earth's atmosphere." Atmospheric Measurement Techniques 11, no. 2 (2018): 663–80. http://dx.doi.org/10.5194/amt-11-663-2018.

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Abstract. We discuss the relationships that link the observed fluctuation spectra of the amplitude and phase of signals used for the radio occultation sounding of the Earth's atmosphere, with the spectra of atmospheric inhomogeneities. Our analysis employs the approximation of the phase screen and of weak fluctuations. We make our estimates for the following characteristic inhomogeneity types: (1) the isotropic Kolmogorov turbulence and (2) the anisotropic saturated internal gravity waves. We obtain the expressions for the variances of the amplitude and phase fluctuations of radio occultation
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Lysenko, Iu Iu, Yu V. Kuts, V. M. Uchanin, and V. F. Petryk. "Research of oscillation mode in automated pulsed eddy current testing systems." Information extraction and processing 2021, no. 49 (2021): 9–18. http://dx.doi.org/10.15407/vidbir2021.49.009.

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The formation and analysis of eddy current probe signals obtained in pulsed excitation mode is considered. The proposed method of implementing pulsed eddy current testing with the formation of attenuating harmonic oscillations is more resistant to the effects of noise and interference that accompany the process of inspected object parameters evaluation. The equivalent scheme of the system “test object–eddy current probe” is developed and analyzed. The obtained mathematical model of the eddy current probe signals allowed proposing the natural frequency and the attenuation as informative signals
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Dissertations / Theses on the topic "Amplitude and phase characteristics of signal"

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Дубицька, Марія Сергіївна, Мария Сергеевна Дубицкая та M. S. Dubyts’ka. "Вдосконалення способу прогнозу диз’юнктивних порушень методом акустичної геолокації при відпрацюванні пологозалягаючих вугільних пластів". Thesis, Видавництво НГУ, 2014. http://ir.nmu.org.ua/handle/123456789/3692.

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У дисертації вирішене актуальне науково-технічне завдання підвищення ефективності прогнозу мілкоамплітудних геологічних порушень вугільних пластів методом неруйнівного контролю до 95%. Запропонована і обґрунтована математична модель розповсюдження акустичного хвильового пакету в дисперсійному породному середовищі, заснована на інформаційній амплітудно-фазовій модуляції несучих частот зондуючого сигналу. Розроблено ефективний спосіб прогнозу прихованих диз'юнктивів у вугільних пластах методом неруйнівного контролю. У його основу покладено аналіз особливостей прояву розривних геологічни
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Barros, M. de P. "Crystal filters having prescribed amplitude and phase characteristics." Thesis, University of Essex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374712.

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Senin, Sergei. "Dynamics of amplitude and phase scintillations in a millimetre-wave satellite downlink." Thesis, University of Portsmouth, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310392.

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Thomas, Edwin Christopher. "Phase and amplitude variations in the wave fields of ionospherically reflected radio waves." Thesis, University of Leicester, 1986. http://hdl.handle.net/2381/35807.

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The wavefronts of high frequency (HF) radio waves received after reflection from the ionosphere exhibit both spatial non-linearities and temporal variations which limit the performance of large aperture receiving arrays. The objective of this investigation was to measure the phase and amplitude of ionospherically propagated signals in order to relate these parameters to the reflection process. This thesis describes the design and construction of a large aperture multi-element array and its implementation for wavefrot investigations. The hardware and software developed to control the equipment
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Лисенко, Юлія Юріївна. "Інформаційно–діагностична система імпульсного вихрострумового неруйнівного контролю виробів машинобудування". Doctoral thesis, Київ, 2017. https://ela.kpi.ua/handle/123456789/21603.

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Дисертація присвячена розробці інформаційно – діагностичної системи імпульсного вихрострумового неруйнівного контролю виробів машинобудування. В роботі проаналізовано процеси в ланцюгах вихрострумового перетворювача в умовах імпульсному режиму збудження та визначено умови виникнення загасаючих гармонічних коливань, що дозволило в якості інформативних параметрів сигналів вихрострумового перетворювача запропонувати використання їх власної частоти та коефіцієнта загасання. В роботі розроблено методику обробки та аналізу інформативних параметрів сигналів вихрострумового перетворювача в імпульсно
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Uner, Muhittin. "Frequency, amplitude, and phase tracking of nonsinusoidal signal in noise with extended Kalman filter." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28235.

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Approved for public release; distribution is unlimited<br>This thesis applies extended Kalman filtering to the problem of estimating frequency, amplitude, and phase of a nonsinusoidal periodic signal contaminated by additive white, Gaussian noise. Parameters will be estimated up to mth significant harmonic component. It also gives an approach for the case of less than mth significant harmonic components. The estimator will track the signal's fundamental frequency, amplitudes, and phases while these parameters are changing slowly over time. The amplitudes are estimated as if the fundamental fre
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Patriksson, Alfred. "Radio signal DOA estimation : Implementing radar signal direction estimation on an FPGA." Thesis, Linköpings universitet, Datorteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157144.

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This master’s thesis covers the design and implementation of a monopulse directionof arrival (DOA) estimation algorithm on an FPGA. The goal is to implement a complete system that is capable of estimating the bearing of an incident signal. In order to determine the estimate quality both a theoretical and practical noise analysis of the signal chain is performed. Special focus is placed on the statistical properties of the transformation from I/Q-demodulated signals with correlated noise to a polar representation. The pros and cons for three different methods of calculating received signal phas
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Neužil, Jan. "Uživatelské rozhraní pro HP89410A." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217775.

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The aim of this thesis was to develop user interface in LabVIEW to make typical measurements with spectral analyzer HP89410A There is introduced the theory of operation of an analogue heterodyne and a digital FFT spectral analyzer. It is explained the background of the Fast Fourier Transform. There are discussed the key settings in measuring with FTT analyzer, like window function, bandwidth, number of frequency points, or the averaging. Further is described the program, which was developed for measuring frequency characteristic by white noise and by stepped measurement. It was also made a mod
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Ekanthalingam, Ravikanth. "Amplitude Estimation of Minimum Shift Keying in the presence of Co-channel interference." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1107802525.

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Jabloun, Meryem. "Modélisation de signaux fortement non stationnaires à phase et à amplitude locales polynomiales." Phd thesis, Grenoble INPG, 2007. http://tel.archives-ouvertes.fr/tel-00176079.

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Ce travail de recherche est consacré à l'élaboration et le développement d'une nouvelle méthode d'estimation<br />et de reconstruction de signaux fortement non-stationnaires, modulés non-linéairement à la fois<br />en amplitude et en fréquence. L'estimation de tels signaux dans un contexte trés bruité est un problème<br />délicat et les méthodes existantes de la littérature présentent plusieurs inconvénients dans ce cas.<br />Nous avons montré comment une approche locale permet une meilleure adaptabilité du modèle à la<br />nature des variations locales des amplitudes et des fréquences instant
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Books on the topic "Amplitude and phase characteristics of signal"

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Shirokov, Igor', and Yuriy Gimpilevich. Research of communication channel characteristics. INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1093426.

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The questions of studying the amplitude and phase characteristics of communication channels of radio engineering systems are considered. As part of the research, a homodyne method for converting microwave signals is proposed, which makes it possible to measure amplitude and phase fluctuations with high accuracy and with the utmost simplicity of measuring equipment. The development of the homodyne method of signal transformation for the purposes and tasks of determining the amplitude and phase fluctuations of signals during the propagation of radio waves on open lines of sight is presented. The
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Üner, Muhittin. Frequency, amplitude, and phase tracking of nonsinusoidal signal in noise with extended Kalman filter. Naval Postgraduate School, 1991.

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Phase characteristics and time responses of unknown linear systems determined from measured CW amplitude data. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1991.

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Linkimer, Lepolt. Earthquake or Explosion - Seismic Signal Identification in Eastern Russian using Amplitude Phase Ratios Obtained From Analog Records. VDM Verlag Dr. Mueller e.K., 2007.

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Ascheid, Gerd, and Heinrich Meyr. Synchronization in Digital Communication Volume I, Phase-, Frequency-Locked Loops, and Amplitude Control (Wiley Series in Telecommunications and Signal Processing). John Wiley & Sons, 1990.

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Sakamoto, Keiko. Signal Intensity Characteristics of Liver Masses at Hepatobiliary Phase Images of Gadoxetate-Enhanced MR (EOB-MR): Qualitative Assessment. INTECH Open Access Publisher, 2012.

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Wendling, Fabrice, Marco Congendo, and Fernando H. Lopes da Silva. EEG Analysis. Edited by Donald L. Schomer and Fernando H. Lopes da Silva. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190228484.003.0044.

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This chapter addresses the analysis and quantification of electroencephalographic (EEG) and magnetoencephalographic (MEG) signals. Topics include characteristics of these signals and practical issues such as sampling, filtering, and artifact rejection. Basic concepts of analysis in time and frequency domains are presented, with attention to non-stationary signals focusing on time-frequency signal decomposition, analytic signal and Hilbert transform, wavelet transform, matching pursuit, blind source separation and independent component analysis, canonical correlation analysis, and empirical mod
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Book chapters on the topic "Amplitude and phase characteristics of signal"

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Yu, Jianjun, and Nan Chi. "Carrierless Amplitude and Phase Modulation." In Digital Signal Processing In High-Speed Optical Fiber Communication Principle and Application. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3098-2_10.

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Wetsel, G. C., and Z. M. Liu. "Frequency Dependence of Amplitude and Phase of Photothermal-Optical-Beam-Deflection Signal." In Photoacoustic and Photothermal Phenomena II. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-540-46972-8_42.

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Lemkhenter, Abdelhak, and Paolo Favaro. "Boosting Generalization in Bio-signal Classification by Learning the Phase-Amplitude Coupling." In Lecture Notes in Computer Science. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71278-5_6.

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Wu, Rongrong, He Huang, and Tingwen Huang. "Learning of Phase-Amplitude-Type Complex-Valued Neural Networks with Application to Signal Coherence." In Neural Information Processing. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70087-8_10.

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Smyrnaios, M., and S. Schön. "GNSS Antenna Impact on the Resulting Multipath Effects in Carrier-Phase and Signal Amplitude." In International Association of Geodesy Symposia. Springer International Publishing, 2015. http://dx.doi.org/10.1007/1345_2015_169.

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Stark, Hans-Georg. "Identification of Amplitude and Phase Discontinuities in the Intensity Signal of a Nd-YAG solid state laser." In Proceedings of the Third European Conference on Mathematics in Industry. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0629-7_55.

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Hong, Wenpeng, Yunlong Zhou, and Dong Deng. "PSD Characteristics of Air-water Two-Phase Cross Flow Based on Pressure-difference Fluctuation Signal." In Challenges of Power Engineering and Environment. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-76694-0_176.

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Wang, Xu, Huiyong Li, and Julan Xie. "The Impact Analysis of the Array Elements Number on the Beam Direction in the Presence of Amplitude and Phase Errors." In The Proceedings of the Second International Conference on Communications, Signal Processing, and Systems. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00536-2_60.

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Slowik, Adam. "Hybridization of Evolutionary Algorithm with Yule Walker Method to Design Minimal Phase Digital Filters with Arbitrary Amplitude Characteristics." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21219-2_10.

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Schmal, Christoph, Gregor Mönke, and Adrián E. Granada. "Analysis of Complex Circadian Time Series Data Using Wavelets." In Methods in Molecular Biology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2249-0_3.

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AbstractExperiments that compare rhythmic properties across different genetic alterations and entrainment conditions underlie some of the most important breakthroughs in circadian biology. A robust estimation of the rhythmic properties of the circadian signals goes hand in hand with these discoveries. Widely applied traditional signal analysis methods such as fitting cosine functions or Fourier transformations rely on the assumption that oscillation periods do not change over time. However, novel high-resolution recording techniques have shown that, most commonly, circadian signals exhibit time-dependent changes of periods and amplitudes which cannot be captured with the traditional approaches. In this chapter we introduce a method to determine time-dependent properties of oscillatory signals, using the novel open-source Python-based Biological Oscillations Analysis Toolkit (pyBOAT). We show with examples how to detect rhythms, compute and interpret high-resolution time-dependent spectral results, analyze the main oscillatory component, and to subsequently determine these main components’ time-dependent instantaneous period, amplitude, and phase. We introduce step-by-step how such an analysis can be done by means of the easy-to-use point-and-click graphical user interface (GUI) provided by pyBOAT or executed within a Python programming environment. Concepts are explained using simulated signals as well as experimentally obtained time series.
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Conference papers on the topic "Amplitude and phase characteristics of signal"

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Zubov, V. A. "Modulation spectral method to measure amplitude-phase characteristics of optical signals and transfer functions varying in time." In Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, edited by Yuri V. Chugui, Sergei N. Bagayev, Albert Weckenmann, and P. Herbert Osanna. SPIE, 2002. http://dx.doi.org/10.1117/12.484569.

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Stanley, K. N., and D. E. Nikitopoulos. "Phase Discrimination Techniques for Phase Doppler Measurements in Dispersed, Bubbly Flows." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0792.

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Abstract A combined Phase-Doppler Anemometry (PDA) and video imaging measurement technique for non-intrusive measurements in dispersed bubbly flows is presented. A one-component Phase-Doppler Velocimetry system has been employed to measure liquid seeding particle size and velocity as well as bubble size and velocity non-intrusively. Measurable flow quantities include: (1) mean velocities and RMS velocity fluctuations for bubbles and liquid; (2) local bubble diameter, and (3) local bubble passage frequency. Non-intrusive local measurement of seeding particle and bubble size is an advantage over
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Jeng, Jang-Der, Yuan Kang, Yeon-Pun Chang, and Shyh-Shyong Shyr. "Characteristics in Response Integration and Bifurcation of a Forced Duffing Oscillator." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28118.

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The Duffing oscillator is well-known models of nonlinear system, with applications in many fields of applied sciences and engineering. In this paper, a response integration algorithm is proposed to analyze high-order harmonic and chaotic motions in this oscillator for modeling rotor excitations. This method numerically integrates the distance between state trajectory and the origin in the phase plane during a specific period and predicted intervals with excitation periods. It provides a quantitative characterization of system responses and can replace the role of the traditional stroboscopic t
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Lee, Yong Ho, Soon Heung Chang, and Won-Pil Baek. "Vibration Characteristics of a Vertical Round Tube According to Heat Transfer Regimes." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22161.

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This paper presents the results of an experimental work on the effects of boiling heat transfer regimes on the flow-induced vibration (FIV). The experiment has been performed using an electrically heated vertical round tube through which water flows at atmospheric pressure. Vibration characteristics of the heated tube are changed significantly by heat transfer regimes and flow patterns. For single-phase liquid convection, the rod vibrations are negligible. However, on the beginning of subcooled nucleate boiling at tube exit, vibration level becomes very large. As bubble departure occurs at the
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Provenza, Andrew J., and Carlos R. Morrison. "Control of Fan Blade Vibrations Using Piezoelectrics and Bi-Directional Telemetry." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46714.

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A novel wireless device which transfers supply power through induction to rotating operational amplifiers and transmits low voltage AC signals to and from a rotating body by way of radio telemetry has been successfully demonstrated in the NASA Glenn Research Center (GRC) Dynamic Spin Test Facility. In the demonstration described herein, a rotating operational amplifier provides controllable AC power to a piezoelectric patch epoxied to the surface of a rotating Ti plate. The amplitude and phase of the sinusoidal voltage command signal, transmitted wirelessly to the amplifier, was tuned to compl
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Azartash, Kaveh, and Enrico Gratton. "Measuring the Cell-Induced Deformation of Collagen Matrix Detected With Digital Holographic Microscopy." In ASME 2007 2nd Frontiers in Biomedical Devices Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/biomed2007-38064.

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A modified Mach-Zender set-up in reflection is applied to record and reconstruct holographic amplitude and phase images. A charged couple device (CCD) is used to record a hologram and numerical reconstruction algorithms are then applied to rebuild the hologram for obtaining both phase and amplitude information. One could also focus on multiple focal planes from a single hologram, similar to the focusing control of a conventional microscope. The morphology and behavior of mammalian cells is determined by an interaction between signals from the intracellular matrix and the cellular responses. It
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Zotov, A. M., P. V. Korolenko, R. T. Kubanov, and N. N. Pavlov. "Amplitude-phase characteristics of vortex diffractals." In Акустооптические и радиолокационные методы измерений и обработки информации. Научно-технологический центр уникального приборостроения РАН, 2021. http://dx.doi.org/10.25210/armimp-2021-10.

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Lee, C. Y., and R. S. Cant. "CFD Investigation of Turbulent Premixed Flame Response to Transverse Forcing." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94312.

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Screech is a high frequency oscillation that is usually characterized by instabilities caused by large-scale coherent flow structures in the wake of bluff-body flameholders and shear layers. Such oscillations can lead to changes in flame surface area which can cause the flame to burn unsteadily, but also couple with the acoustic modes and inherent fluid-mechanical instabilities that are present in the system. In this study, the flame response to hydrodynamic oscillations is analyzed in a controlled manner using high-fidelity Computational Fluid Dynamics (CFD) with an unsteady Reynolds-averaged
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Haecker, Annika-verena, Gabriel N. Carryon, James L. Tangorra, and Thomas Sattel. "Neural-Based Control of Compliant Foils With Spanwise Flexibility." In ASME 2019 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/dscc2019-9045.

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Abstract The ability to change the spatial distribution of a compliant foil’s flexural rigidity can enhance the foil’s swimming performance capabilities but pose challenges to neural-based control of these types of foils. The same property that makes these foil’s effective propulsors also makes them challenging to control with a neural oscillator, namely the variation in the mechanical properties will cause the amplitude and phase of the sensory feedback signal to vary depending upon the placement of the sensor. In this study we investigate the effect of sensor placement on the entrainment cha
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Kuzmin, Ilya A., Zhanna V. Merkulova, Dmitry V. Prikhodko, and Pavel Y. Vatskov. "Methods of APAA phase-amplitude characteristics measurements automation." In 2017 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). IEEE, 2017. http://dx.doi.org/10.1109/eiconrus.2017.7910788.

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Reports on the topic "Amplitude and phase characteristics of signal"

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Ma, Mark T. Phase characteristics and time responses of unknown linear systems determined from measured CW amplitude data. National Bureau of Standards, 1991. http://dx.doi.org/10.6028/nist.tn.1349.

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Smith, Jijo K., Howell Li, and Darcy M. Bullock. Populating SAE J2735 Message Confidence Values for Traffic Signal Transitions Along a Signalized Corridor. Purdue University, 2019. http://dx.doi.org/10.5703/1288284317322.

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The communication between connected vehicles and traffic signal controllers is defined in SAE Surface Vehicle Standard J2735. SAE J2735 defines traffic signal status messages and a series of 16 confidence levels for traffic signal transitions. This paper discusses a statistical method for tabulating traffic signal data by phase and time of day and populating the SAE J2735 messages. Graphical representation of the red-green and green-yellow transitions are presented from six intersections along a 4-mile corridor for five different time of day timing plans. The case study provided illustrates th
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Singhvi, Punit, Javier García Mainieri, Hasan Ozer, and Brajendra Sharma. Rheology-Chemical Based Procedure to Evaluate Additives/Modifiers Used in Asphalt Binders for Performance Enhancements: Phase 2. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-020.

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The increased use of softer binders in Illinois over the past decade is primarily attributed to the increased use of recycled materials in asphalt pavement construction. The shift in demand of using PG 58-28 over PG 64-22 has resulted in potential alternative methods to produce softer binders more economically using proprietary products. However, there are challenges in using these proprietary products for asphalt modification because of uncertainty in their long-term performance and significant variability in binder chemistry. The current SuperPave performance grading specification for asphal
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Soloviev, Vladimir, Oleksandr Serdiuk, Serhiy Semerikov, and Arnold Kiv. Recurrence plot-based analysis of financial-economic crashes. [б. в.], 2020. http://dx.doi.org/10.31812/123456789/4121.

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The article considers the possibility of analyzing the dynamics of changes in the characteristics of time series obtained on the basis of recurrence plots. The possibility of using the studied indicators to determine the presence of critical phenomena in economic systems is considered. Based on the analysis of economic time series of different nature, the suitability of the studied characteristics for the identification of critical phenomena is assessed. The description of recurrence diagrams and characteristics of time series that can be obtained on their basis is given. An analysis of seven
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Meidan, Rina, and Robert Milvae. Regulation of Bovine Corpus Luteum Function. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604935.bard.

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The main goal of this research plan was to elucidate regulatory mechanisms controlling the development, function of the bovine corpus luteum (CL). The CL contains two different sterodigenic cell types and therefore it was necessary to obtain pure cell population. A system was developed in which granulosa and theca interna cells, isolated from a preovulatory follicle, acquired characteristics typical of large (LL) and small (SL) luteal cells, respectively, as judged by several biochemical and morphological criteria. Experiments were conducted to determine the effects of granulosa cells removal
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