Relevant bibliographies by topics / Oscillation period

Contents

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

Academic literature on the topic 'Oscillation period'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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Journal articles on the topic "Oscillation period"

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Potkonjak, N., Lj Kolar-Anić, T. Potkonjak, S. Nikola Blagojević, and S. Anić. "Oscillatory Phenomena during Anodic Copper Electrodissolution in Trifluoroacetic Acid Solution." Materials Science Forum 518 (July 2006): 301–6. http://dx.doi.org/10.4028/www.scientific.net/msf.518.301.

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This work presents the current oscillation phenomena observed in an electrochemical Cu/0.5 M CF3COOH system. The dynamical response of this new oscillator was followed by both current density-potential (j-E) and current density-time (j-t) curves. The current oscillation phenomena of the investigated system were monitored over various potential scan rates and constant applied potentials as control parameters. The increase of potential scan rate significantly decreases both the potential range of current oscillations and the frequency of oscillations. At the j-t curves both the simple and the co
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Xu, Jun, Zongjun Ning, Dong Li, Fanpeng Shi, Yuxiang Song, and Yuzhi Yang. "An Investigation of the Loop Oscillations after a Solar Flare." Universe 10, no. 5 (2024): 201. http://dx.doi.org/10.3390/universe10050201.

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We study the loop oscillations after a solar flare on 19 January 2023, in the active region N11E40 3196, which is well observed by the SDO/AIA. After tracing the loop position and fitting, we find that the loop oscillations have a period between 3 and 9 min at various locations, such as from the leg to the top or from the inner to the outer loop. Their oscillating amplitudes decrease with time. Two loops display the position oscillation simultaneously with their brightness oscillation. After the analysis of the differential emission measure (DEM), we find that two of their loop position oscill
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Hinrichsen, Peter F. "Nonlinear oscillator acceleration and period variation with amplitude." American Journal of Physics 91, no. 12 (2023): 979–87. http://dx.doi.org/10.1119/5.0139124.

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A classic nonlinear spring mass oscillator, the nonlinearity of which could be varied by changing the initial stretching of the spring, was used to investigate how the amplitude dependence of the period and the harmonic content depended on the nonlinearity. The oscillations were measured with a photogate and a MEMS accelerometer, allowing both the oscillation period and the Fourier components of the motion to be precisely determined. The results were in good agreement with theory.
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Bezruchko, Boris, Mihail Prokhorov, and Evgeny Seleznev. "Oscillation types, multistability, and basins of attractors in symmetrically coupled period-doubling systems." Izvestiya VUZ. Applied Nonlinear Dynamics 10, no. 4 (2002): 47–68. http://dx.doi.org/10.18500/0869-6632-2002-10-4-47-68.

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Symmetrically coupled nonlinear oscillator systems demonstrating transition to chaos via a sequence of period-doubling bifurcations under the control parameter variation exhibit various types of mutual synchronization. For these coupled systems, with dissipatively coupled logistic maps, we consider a hierarchy of possible oscillation types using the magnitude оf the time shift between subsystem oscillations аs а basis for multistable states classification. For oscillation states and their basins of attraction the ways of evolution are studied under nonlinearity and coupling variation. Obtained
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Sadeghi, Rayhane, and Ehsan Tavabi. "Characteristics of chromospheric oscillation periods in magnetic bright points." Monthly Notices of the Royal Astronomical Society 512, no. 3 (2022): 4164–70. http://dx.doi.org/10.1093/mnras/stac574.

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ABSTRACT In this investigation, oscillation periods in Mg ii k-line intensity, brightness temperature, and Doppler velocity obtained above magnetic bright points (MBPs) are investigated. For this purpose, data from the Interface Region Imaging Spectrometer (IRIS) observing the higher chromosphere and transition region (TR) were analysed, together with imaging and magnetogram data obtained by the Solar Dynamics Observatory(SDO). The MBPs were identified by combining Si iv 1403-Å slit-jaw images with magnetogram information from the Heliospheric and Magnetic Imager (HMI). A time-slice analysis f
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Dinh, Nguyen Van. "A note on the method of harmonic balance." Vietnam Journal of Mechanics 23, no. 1 (2001): 34–38. http://dx.doi.org/10.15625/0866-7136/9938.

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Free oscillation period of the Duffing oscillator with cubic non-linearity was examined. A comparison between the exact period and those obtained by the asymptotic and the harmonic balance methods was done. It was shown that the remits given by the harmonic balance are acceptable even for large oscillations whereas the asymptotic method can only be applied for small oscillations.
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Kontomaris, Stylianos Vasileios, Georgios Chliveros, and Anna Malamou. "Approximate Solutions for Undamped Nonlinear Oscillations Using He’s Formulation." J 6, no. 1 (2023): 140–51. http://dx.doi.org/10.3390/j6010010.

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Solving nonlinear oscillations is a challenging task due to the mathematical complexity of the related differential equations. In many cases, determining the oscillation’s period requires the solution of complicated integrals using numerical methods. To avoid the complexity, there are many empirical equations in the literature that can be used instead of rigorous mathematical analysis to provide an acceptable approximation. In this paper, a recently developed method, He’s formulation, is applied to find the period in many different cases of nonlinear oscillators. The cases are those of the Duf
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Kaur, Manpreet, Amy Ng, Pyonghwa Kim, Casey Diekman, and Yong-Ick Kim. "CikA Modulates the Effect of KaiA on the Period of the Circadian Oscillation in KaiC Phosphorylation." Journal of Biological Rhythms 34, no. 2 (2019): 218–23. http://dx.doi.org/10.1177/0748730419828068.

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Cyanobacteria contain a circadian oscillator that can be reconstituted in vitro. In the reconstituted circadian oscillator, the phosphorylation state of KaiC oscillates with a circadian period, spending about 12 h in the phosphorylation phase and another 12 h in the dephosphorylation phase. Although some entrainment studies have been performed using the reconstituted oscillator, they were insufficient to fully explain entrainment mechanisms of the cyanobacterial circadian clock due to the lack of input pathway components in the in vitro oscillator reaction mixture. Here, we investigate how an
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Usanov, Dmitrij, Sergej Venig, and Sergey Skvortsov. "Magnetogcontrolled generation with period-adding sequence and chaos in the circuit with magnetotransistor." Izvestiya VUZ. Applied Nonlinear Dynamics 8, no. 5 (2001): 43–47. http://dx.doi.org/10.18500/0869-6632-2000-8-5-43-47.

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Experimental investigation results of relaxation oscillator operation are presented, in which bipolar magnetotransistor is used аs one of transistors. Possibility of magnetocontrolled period—adding sequence initiation in such oscillator is shown, and the discrete variation of an oscillation period takes place with constant step for discrete values of magnetic field induction with an equal interval of its change. Mode of the oscillator operation is found, at which the transition from periodic oscillation through period—adding sequence to chaotic oscillation is characterized by high sluggishness
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Olshanskii, Vasiliy, and Stanislav Olshanskii. "Modeling the motion of an oscillator with a soft elastic characteristic." Physico-mathematical modelling and informational technologies, no. 25 (May 25, 2017): 113–24. http://dx.doi.org/10.15407/fmmit2017.25.113.

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The free oscillations of a system with one degree of freedom are considered under the assumption that the elasticity of a spring is proportional to the cubic root of its deformation. Two forms of the analytical solution of the nonlinear differential equation of motion of the oscillator are obtained. In the first displacement of the oscillator in time is expressed in terms of incomplete elliptic integrals of the first and second kind. In the second form, the solution is expressed in terms of periodic Ateb-functions. The tables of the involved functions are made, which simplify the calculation.
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Dissertations / Theses on the topic "Oscillation period"

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Grác, David. "Měření momentů setrvačnosti vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231201.

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This diploma thesis is concerned with selecting the appropriate method for determining the moment of inertia to the vertical, lateral and longitudinal axis through the centre of gravity of the vehicle. Using the special mechanical device, constructed on IAE was carried out repeated measurements of known mass properties in each axis. With the aid of obtained data was calculated measurement error. To compare the resulting values was created MBS model.
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Toman, Josef. "Zařízení pro měření výškové polohy těžiště vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231246.

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This diploma thesis deals with measurement of vehicle centre of gravity height position. In the first part is created summary of methods used for measuring centre of gravity position and moment of inertia of the vehicle. In the other parts are designed and analyzed two dynamics method of measuring centre of gravity height position. This thesis presents analysis of the errors of the proposed methods, results of measurements and design of the construct adjustments device for measuring of the moments of inertia enabling its used for measuring centre of gravity height position. Some components are
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Hanych, Jaroslav. "Konstrukční návrh zařízení pro měření výškové polohy těžiště vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378015.

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This master's thesis deals with problems connected with measuring vehicle centre of gravity height. The research part summarizes generally known methods of measuring vehicle centre of gravity and moments of inertia. Essential part of this thesis is the design of a device for measuring the centre of gravity height of a road vehicle on a principle of measuring a period of oscillation. The height position of the platform of the device is adjustable through hydraulic cylinders. A stress-strain analysis of the design was executed through a combination of analytical methods and a finite element meth
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Kotaška, Stanislav. "Měření větrových oscilačních vln na nádrži." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-391947.

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This diploma thesis deals with the measurement of wind oscillation waves on reservoirs, especially with regard to the determination of wave properties with a focus on the spectral density. The thesis presents the basics of the theory of creation and propagation of wind oscillation waves, the recherche of measuring devices and a description of the pilot measurement with the processing of measured data in the MATLAB environment using the software tool WAFO. Attached to the CD are sample scripts for data processing from the resistance sensor.
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Andrews, David Jeremy. "Planetary-period oscillations in Saturn's magnetosphere." Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/9995.

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This thesis is concerned with the study of near-planetary rotation period oscillations in Saturn’s magnetic field. Similar oscillations are present in a variety of other magnetospheric phenomena, most notably kilometre-wavelength radio emissions, and together they have a substantial influence throughout the Saturnian plasma environment. However, their origin remains poorly understood, despite more than a decade of study. Surprising new discoveries have been made regarding the seasonality of these oscillatory phenomena, and their intrinsic connection to the high-latitude upper atmosphere and io
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Kubica, Petr. "Zařízení pro měření výškové polohy těžiště vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232123.

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This diploma thesis deals the with measurment of the centre of gravity height position of a road vehicle and its issues. The introduction of this thesis focuses on the determining of the position of the center of gravity and the moment of inertia of a road vehicle. The next part is about creationing of a construction plan and its verification. The thesis contains a sensitivity analysis of this device including its results. The end of the thesis informs about the executed measurment in a laboratory and about recommendations for next measurments.
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Lacot, Eric. "Dynamique d'un laser à fibre dopée Er3+." Grenoble 1, 1992. http://www.theses.fr/1992GRE10202.

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La dynamique d'un laser a fibre dopee er#3#+ a ete analysee aussi bien en regime de pompage continu qu'en regime de pompage module. En pompage continu, lorsque l'on augmente la puissance de pompe, le laser atteint un second seuil et une bifurcation de hopf apparait menant le laser d'un regime de fonctionnement continu a un regime de fonctionnement pulse. Une etude de l'influence des parametres aussi bien intrinseques (dopage, longueur,. . . ) que extrinseques (pompage, cavite,. . . ) nous a permis de determiner dans un espace de parametres propres au laser la frontiere entre les differents reg
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Clarke, Kay Elizabeth. "Magnetospheric period oscillations of Saturn’s magnetopause and bow shock." Thesis, University of Leicester, 2010. http://hdl.handle.net/2381/8313.

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In this thesis we show that Saturn’s magnetopause and bow shock oscillate with a period near that of planetary rotation that we term the ‘magnetospheric period’. In our first study, using two Cassini orbits as exemplars, we demonstrate that Saturn’s magnetopause oscillates at the magnetospheric period in response to changes in the magnetospheric pressure. The change in internal pressure required to produce such oscillations, which typically correspond to a ~10% change in the boundary radius, is estimated to be ~30-40% of the unperturbed background pressure. In our second study we develop a sim
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Jacobi, Christoph, Nadja Samtleben, and Gunter Stober. "Meteor radar observations of mesopause region long-period temperature oscillations." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212263.

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Meteor radar observations of mesosphere/lower thermosphere (MLT) daily temperatures have been performed at Collm, Germany since August 2004. The data have been analyzed with respect to long-period oscillations at time scales of 2–30 days. The results reveal that oscillations with periods of up to 6 days are more frequently observed during summer, while those with longer periods have larger amplitudes during winter. The oscillations may be considered as the signature of planetary waves. The results are compared with analyses from radar wind measurements. Moreover, the temperature oscillations s
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Jacobi, Christoph, Rudolf Schminder, and Dierk Kürschner. "Long-period (2-18 Days) oscillations of mesopause winds at Collm." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-213040.

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Daily analyses of the zonal and meridional prevailing wind at the mesopause ( - 95 km height) are investigated with respect to planetary wave scale oscillations with periods ranging between 2 and 18 days. A mean climatology of the years 1983 - 1994 is presented. Time series of planetary wave activity show a significant increase during this period, which is in accordance with results from literature<br>Tägliche Analysen des zonalen und meridionalen Grundwindes in der Mesopausenregion (- 95 km Höhe) werden hinsichtlich planetarer Wellenaktivität im Periodenbereich von 2 bis 18 Tagen untersucht.
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Books on the topic "Oscillation period"

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John, Stanford. Oscillations in D-region absorption at periods of one to two months. National Aeronautics and Space Administration, 1989.

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John, Stanford. Oscillations in D-region absorption at periods of one to two months. National Aeronautics and Space Administration, 1989.

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Parkinson, W. H. Determination of band oscillator strengths of atmospheric molecules from high resolution vacuum ultraviolet cross section measurements: Semiannual status report no. 1 for the period 1 November 1984 through 30 April 1985. Smithsonian Institution, Astrophysical Laboratory, 1985.

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George C. Marshall Space Flight Center, ed. North Atlantic basin tropical cyclone activity in relation to temperature and decadal-length oscillation patterns. National Aeronautics and Space Administration, Marshall Space Flight Center, 2009.

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T, Papageorgiou Demetrios, Smyrlis Yiorgos S, and Institute for Computer Applications in Science and Engineering., eds. Nonlinear stability of oscillatory core-annular flow: A generalized Kuramoto-Sivashinsky equation with time periodic coefficients. Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1994.

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Bensoussan, Alain. Asymptotic analysis for periodic structures. American Mathematical Society, 2011.

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Corduneanu, Constantin. Almost Periodic Oscillations and Waves. Springer, 2010.

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Almost Periodic Oscillations and Waves. Springer New York, 2008.

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Montgomery, Erwin B. Oscillator Basics. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190259600.003.0016.

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This chapter uses metaphors to help programmers picture the basic concepts of oscillators. At the least, DBS can be considered as oscillatory stimulation of the nervous system and increasingly, it is likely that the nervous system operates on the bases of neuronal and neural oscillators. Thus, a fundamental understanding of oscillators, particularly their features, is important. The defining feature of oscillatory activity is the recurrence or repetition of a phenomenon, such as the repetitive flashing of a light at a railroad crossing. This chapter uses the metaphor of a racecar circling on a
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Almost Periodic Oscillations and waves. Springer, 2009.

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Book chapters on the topic "Oscillation period"

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Ma, Yugao, Yicheng Zhao, Hongxing Yu, Shanfang Huang, Jian Deng, and Xiaoming Chai. "Heat Pipe Temperature Oscillation Effects on Solid-State Reactor Operation." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_29.

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AbstractThe alkali metal heat pipes are the critical heat transfer elements in heat pipe cooled reactors. However, there are instabilities in heat pipes such as geyser boiling, resulting in temperature oscillation and even threatening the reactor safety. This work developed a coupled neutronic and thermal-mechanical analysis method to analyze the effects of geyser boiling and heat pipe temperature oscillations on the critical parameters, e.g., temperature and stress, during reactor operation. The megawatt heat pipe reactor MegaPower was chosen as an application case. The simulations show that
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Jiménez, A., P. L. Pallé, C. Régulo, et al. "The 13 Day Period Oscillation and the Solar Cycle." In Advances in Helio- and Asteroseismology. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-4009-3_47.

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Hanazaki, H. "Double-period oscillation of passive scalar flux in stratified turbulence." In Springer Proceedings in Physics. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03085-7_107.

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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 tim
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Shi, Wuzhi, Ke Zhang, Yuebo Xie, Lijun Chao, Tolossa Lemma Tola, and Xianwu Xue. "Monitoring the Variation of Drought-Flood Abrupt Alternation and Its Response to Atmospheric Circulation at Multi-time Scales." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_100.

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AbstractAs an emerging disaster, the drought-flood abrupt alternation (DFAA) may cause unprecedented socio-economic impacts under changing environment, which has attracted extensive attention in recent decades. DFAA involves drought to flood (DTF) and flood to drought (FTD). However, thus far, little effort has been made to identify DFAA with high spatial resolution. Moreover, few studies have fully revealed the driving mechanisms of DFAA by large-scale climate factors. Here, the Yellow River Basin (YRB) was selected as the research area, which is an important agricultural base in China. The s
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Di Lorenzo, Renato. "Oscillation Periods." In Perspectives in Business Culture. Springer Milan, 2013. http://dx.doi.org/10.1007/978-88-470-5421-9_5.

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Holton, James R. "The Quasi-Biennial Oscillation in the Earth’s Atmosphere and its Links to Longer Period Variability." In The Solar Engine and Its Influence on Terrestrial Atmosphere and Climate. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-79257-1_16.

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Glaser, Rainer, Marco Downing, Ethan Zars, Joseph Schell, and Carmen Chicone. "Video-Based Kinetic Analysis of Period Variations and Oscillation Patterns in the Ce/Fe-Catalyzed Four-Color Belousov–Zhabotinsky Oscillating Reaction." In ACS Symposium Series. American Chemical Society, 2019. http://dx.doi.org/10.1021/bk-2019-1316.ch015.

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Brown, B. Malcolm, Michael S. P. Eastham, and Karl Michael Schmidt. "Oscillations." In Periodic Differential Operators. Springer Basel, 2012. http://dx.doi.org/10.1007/978-3-0348-0528-5_2.

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Xiong, D. R., L. Deng, and Q. L. Cheng. "Oscillations of Long-Period Variables." In New Eyes to See Inside the Sun and Stars. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-4982-2_90.

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Conference papers on the topic "Oscillation period"

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Kang, Qianqian, Zhaoyuan Wang, Xiaoqin Huang, et al. "Period-halving effect in Floquet photonic lattices." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.jw2a.188.

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We report a light-intensity oscillation with a half-period of Floquet drives applied on photonic lattices. Such an effect, achieved by chiral symmetry of any two half-period separated instantaneous Hamiltonians, is manifested only for zero-energy modes.
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Bons, Jeffrey, Matthew Frankhouser, and James Gregory. "Synchronized Flow Control of Dynamic Stall under Coupled Pitch and Freestream Oscillations." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12005.

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This work presents results of an experimental investigation into synchronized active flow control of a Sikorsky SSC-A09 airfoil undergoing periodic pitching motion in an unsteady free stream using leading edge blowing. The airfoil was evaluated at reduced pitching frequencies up to k=0.05 at steady Mach numbers of 0.2 and 0.4, and at k=0.025 with phase-locked pitch and Mach oscillations at Mach 0.4±0.07 at Reynolds numbers from 1.5 to 3 million. A spanwise row of vortex generator jets (VGJs) located at 10% chord is fed by an oscillating valve that is phase-locked to the pitch oscillation of th
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Zhang, P. "Numerical simulation study on geometric resonance phenomena of sawtooth oscillation period and configuration in tokamak." In 2024 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2024. http://dx.doi.org/10.1109/icops58192.2024.10626712.

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Zuo, Jianing, Maorong Zhao, Guang-Qiong Xia, and Zheng-Mao Wu. "Influences of current modulation on nonlinear dynamics of an optical feedback interband cascade laser operating at period-one oscillation." In Semiconductor Lasers and Applications XIV, edited by Sha Zhu, Werner H. Hofmann, Wei Li, and Ting Wang. SPIE, 2024. http://dx.doi.org/10.1117/12.3035872.

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Th. YOUNIS, Younis, Ahmed K. AHMED, and Kais A. AL-NAIMEE. "CURRENT CONTROLED CHAOTIC SPIKING OF SEMICONDUCTOR LASER DIODE WITH OPTICAL FEEDBACK." In V. International Scientific Congress of Pure, Applied and Technological Sciences. Rimar Academy, 2022. http://dx.doi.org/10.47832/minarcongress5-30.

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The effects of bias currents on the carrier and photon dynamics of semiconductor laser diode SLD with optical feedback from fiber loop mirror have been verified by numerical solutions of Lang-Kobayashi differential equations. The numerical results showed existence a wide range of oscillation regimes (period one, period doubling, quasi-periodic and chaotic oscillations, then transition again to quasiperiodic oscillations) that is by increasing bias currents of the semiconductor laser diode. This were proved by the bifurcation diagram of maxima amplitudes of SLD output as a function of bias curr
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Xu, Fayao, Huiying Wu, and Zhenyu Liu. "Flow Patterns During Flow Boiling Instability in Silicon-Based Pin-Fin Microchannels." In ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ht2016-7387.

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Flow patterns during boiling instability of deionized water across silicon-based microchannels with inner pin-fin arrays have been studied experimentally. Three types of microchannels with different pin-fin structures and a hydraulic diameter of 210 μm were used. During the unstable flow boiling, two types of instability modes of temperature and pressure oscillations occurred: long-period/large-amplitude oscillation mode and short-period/small-amplitude oscillation mode. There were increasing and decreasing stages of the temperature measurement during a period of long-period/large-amplitude os
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Hunsche, S., K. Wienecke, T. Dekorsy, and H. Kurz. "Laser-Induced Softening of Coherent Phonons: Pathway to Nonthermal Melting." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/up.1996.fb.2.

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We investigate the dynamics of coherent optical phonons in single-crystal Tellurium after high-density excitation of free electrons by intense femtosecond laser pulses. The experiments are performed in a standard time-resolved pump-probe setup using pulses of a Ti-Sapphire oscillator that are amplified in a 6.8 kHz dye amplifier. The pulse duration is &lt;100 fs, much shorter than the oscillation period of the A1 optical phonon mode of Tellurium, leading to an impulsive and selective excitation of this phonon via the “displacive excitation” mechanism.1 The coherent lattice vibrations are detec
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Wang, Yongqiang, Yutaka Hori, Shinji Hara, and Francis J. Doyle. "The collective oscillation period of inter-coupled Goodwin oscillators." In 2012 IEEE 51st Annual Conference on Decision and Control (CDC). IEEE, 2012. http://dx.doi.org/10.1109/cdc.2012.6426590.

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Liu, Yun, and Junji Ohtsubo. "Period-One Oscillation in Chaotic System with Multimodal Mapping." In Nonlinear Dynamics in Optical Systems. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/nldos.1992.fa6.

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The behavior of chaotic system described by a differential difference equation (DDE) with a low dimensional mapping has been extensively studied.[1,2] However, the details of the dynamic behaviors especially for a multimodal mapping have not yet been fully understood. It is clear that the usual linear stability analysis can not work for this case, since more than two equilibria exist in the dynamics of the system.
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Ren, Chengjiao, Liang Cheng, and Feifei Tong. "Hydrodynamic Force of an Obliquely Oscillating Cylinder in Steady Flow." In ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/omae2024-126997.

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Abstract This study conducts a series of three-dimensional numerical simulations to explore the dynamics of an oscillating cylinder in steady current. Simulations are set at a fixed Reynolds number of 500 for the steady current and a small oscillation amplitude of 0.4 cylinder diameter. Seven oscillation angles θ from 0° to 90°, defining as the orientation of the cylinder oscillation relative to the current, have been investigated across various oscillation wavelengths λ*. The impact of θ on the wake characteristics can be broadly categorized into three regions. For small λ* (less than 1.5), t
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Reports on the topic "Oscillation period"

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Murray, B. T., G. B. McFadden, and S. R. Coriell. Stabilization of Taylor-Couette flow due to time-periodic outer cylinder oscillation. National Institute of Standards and Technology, 1990. http://dx.doi.org/10.6028/nist.ir.90-4283.

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Stewart, Jonathan, Grace Parker, Joseph Harmon, et al. Expert Panel Recommendations for Ergodic Site Amplification in Central and Eastern North America. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2017. http://dx.doi.org/10.55461/tzsy8988.

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The U.S. Geological Survey (USGS) national seismic hazard maps have historically been produced for a reference site condition of VS30 = 760 m/sec (where VS30 is time averaged shear wave velocity in the upper 30 m of the site). The resulting ground motions are modified for five site classes (A-E) using site amplification factors for peak acceleration and ranges of short- and long-oscillator periods. As a result of Project 17 recommendations, this practice is being revised: (1) maps will be produced for a range of site conditions (as represented by VS30 ) instead of a single reference condition;
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Trahan, Corey, and Peter Rivera. Scaling and sensitivity analysis of machine learning regression on periodic functions. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47523.

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In this report we document the scalability and sensitivity of machine learning (ML) regression on a periodic, highly oscillating, and 𝐶∞ function. This work is motivated by the need to use ML regression on periodic problems such as tidal propagation. In this work, TensorFlow is used to investigate the machine scalability of a periodic function from one to three dimensions. Wall clock times for each dimension were calculated for a range of layers, neurons, and learning rates to further investigate the sensitivity of the ML regression to these parameters. Lastly, the stochastic gradient descent
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Iurasova, Olga, and Jelena Dementjeva. Impact of Manufacturing Sector Development on Economic Growth. Vilnius Business College, 2024. https://doi.org/10.57005/ab.2024.3.3.

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This study presents a model of GDP development based on production sectors. Analysis of actual data reveals the presence of several oscillatory processes, which are associated with the heterogeneity of investments and the aggregation of various production processes with their unique characteristics in statistical data. Fluctuations in aggregated macroeconomic indicators result from the superposition of different oscillations and do not exhibit strictly defined periods, particularly for long-term fluctuations. The model indicates that these fluctuations are asymmetrical relative to extreme poin
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Ramos-Santiago, Efrain, Norberto Nadal-Caraballo, Fabian Garcia-Moreno, et al. Statistical analysis of storm surge and seiche hazards for Lake Erie. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48590.

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Storm surge and seiche events are generally forced by severe storms, initially resulting in a wind-driven super elevation of water level on one or more sides of a lake (surge) followed by a rebound and periodic oscillation of water levels between opposing sides of the lake (seiche). These events have caused flooding along Lake Erie and significant damages to coastal communities and infrastructure. This study builds upon statistical analysis methods initially developed for the 2012 federal interagency Great Lakes Coastal Flood Study. Using the Coastal Hazards System's stochastic Storm Simulatio
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Shrestha, Sarthak, and Manish Shrestha. Hindu Kush Himalaya (HKH) monsoon outlook 2025. International Centre for Integrated Mountain Development (ICIMOD), 2025. https://doi.org/10.53055/icimod.1091.

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The Hindu Kush Himalaya (HKH) region is highly susceptible to the influence of monsoon, a periodic wind system, especially in the Indian Ocean and southern Asia. The summer monsoon, between June and September, is the major source of precipitation in the region with significant impacts on the hydrology of its rivers, which form the lifeline of nearly two billion people in the region. While a good monsoon is essential for replenishing these river systems, malevolence of water-related disasters such as floods, landslides, storms, heat waves, wildfires, droughts, glacial lake outburst floods (GLOF
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Kurtz, Deb, and Deb Kurtz. Northern Harding Icefield glacier mass balance summary: 2010?2017. National Park Service, 2025. https://doi.org/10.36967/2306622.

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Glaciers cover nearly half of Kenai Fjords National Park, serving an important role in ecosystem dynamics and attracting hundreds of thousands of visitors to the park each year. Glacial melt is important to park managers as it impacts visitor experience, infrastructure (e.g., trails and roads), and downstream habitats. Glacier mass balance is the annual gain and loss of ice calculated as a sum of seasonal measurements of accumulation and ablation (the loss of ice through melt, sublimation, and calving). Long-term glacier mass balance studies provide an established method for monitoring the sta
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Wagner, D. Ry, Eliezer Lifschitz, and Steve A. Kay. Molecular Genetic Analysis of Flowering in Arabidopsis and Tomato. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7585198.bard.

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The primary objectives for the US lab included: the characterization of ELF3 transcription and translation; the creation and characterization of various transgenic lines that misexpress ELF3; defining genetic pathways related to ELF3 function regulating floral initiation in Arabidopsis; and the identification of genes that either interact with or are regulated by ELF3. Light quality, photoperiod, and temperature often act as important and, for some species, essential environmental cues for the initiation of flowering. However, there is relatively little information on the molecular mechanisms
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Joly, Kyle, Matthew Cameron, Matthew Cameron, and Kyle Joly. Caribou vital sign annual report for the Arctic Network Inventory and Monitoring Program: September 2023?August 2024. National Park Service, 2024. http://dx.doi.org/10.36967/2306687.

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Caribou (Rangifer tarandus) are an integral part of the ecological and cultural fabric of northwest Alaska. Western Arctic Herd (WAH) caribou roam this entire region, including all 5 Arctic Network (ARCN) Inventory and Monitoring Program?s National Park units. Conservation of healthy caribou populations is specifically mentioned within the enabling legislation (Alaska National Interested Lands Conservation Act) for 3 of these units and is of importance to subsistence hunters. Caribou are, by far, the most abundant large mammal in northwest Alaska and are famous for their long-distance migratio
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Joly, Kyle, and Matthew Cameron. Caribou vital sign annual report for the Arctic Network Inventory and Monitoring Program: September 2022?August 2023. National Park Service, 2023. http://dx.doi.org/10.36967/2301773.

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Caribou (Rangifer tarandus) are an integral part of the ecological and cultural fabric of northwest Alaska. Western Arctic Herd (WAH) caribou roam over this entire region, including all 5 Arctic Network (ARCN) Inventory and Monitoring Program?s National Park units. Conservation of healthy caribou populations is specifically mentioned within the enabling legislation (Alaska National Interested Lands Conservation Act or ANILCA) for 3 of these park units and is of importance to subsistence hunters. Caribou are, by far, the most abundant large mammal in northwest Alaska and are famous for their lo
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