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Gotowa bibliografia na temat „Pulse operation”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Pulse operation"

Seol, Youbin, Minsu Choi, Hongyoung Chang i Shinjae You. "Study on OH Radical Production Depending on the Pulse Characteristics in an Atmospheric-Pressure Nanosecond-Pulsed Plasma Jet". Materials 16, nr 10 (19.05.2023): 3846. http://dx.doi.org/10.3390/ma16103846.

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Hydroxyl radicals (OH) play a crucial role in plasma-bio applications. As pulsed plasma operation is preferred, and even expanded to the nanosecond range, it is essential to study the relationship between OH radical production and pulse characteristics. In this study, we use optical emission spectroscopy to investigate OH radical production with nanosecond pulse characteristics. The experimental results reveal that longer pulses generate more OH radicals. To confirm the effect of pulse properties on OH radical generation, we conduct computational chemical simulations, focusing on two types of pulse properties: pulse instant power and pulse width. The simulation results show that, similar to the experimental results, longer pulses generate more OH radicals. In the nanosecond range, reaction time is critical for OH radical generation. In terms of chemical aspects, N2 metastable species mainly contribute to OH radical generation. It is a unique behavior observed in nanosecond range pulsed operation. Furthermore, humidity can turn over the tendency of OH radical production in nanosecond pulses. In a humid condition, shorter pulses are advantageous for generating OH radicals. Electrons play key roles in this condition and high instant power contributes to them.

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Шашкин, И. С., А. Ю. Лешко, Д. Н. Николаев, В. В. Шамахов, Н. А. Рудова, К. В. Бахвалов, А. В. Лютецкий i in. "Излучательные характеристики мощных полупроводниковых лазеров (1060 нм) с узким мезаполосковым контактом на основе асимметричных гетероструктур AlGaAs/GaAs с широким волноводом". Физика и техника полупроводников 54, nr 4 (2020): 408. http://dx.doi.org/10.21883/ftp.2020.04.49149.9333.

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Light characteristics of narrow-stripe lasers (5.5 m) based on asymmetric AlGaAs/GaAs heterostructures are studied. It was shown that the maximum optical power achieved under continuous-wave (CW) operation is limited by thermal heating and reaches 1695 mW at a current of 2350 mA at +25°C, and the maximum efficiency reaches 54.8 %. By reducing the operating temperature to -8°C, we were able to increase the maximum power to 2 W. A peak power of 2930 mW was obtained under pulsed operation (pulse width 240 ns, amplitude 4230 mA). It is shown there is a region of an “optical dip” in the power profile with a low-efficiency lasing of a train of pulses of sub-ns duration under pulsed operation.

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Godun, D. V., S. V. Bordusau i G. P. Budzko. "Output Current Control System of a High Voltage Electric Pulse Generator for Plasma Excitation". PLASMA PHYSICS AND TECHNOLOGY 6, nr 1 (2019): 7–9. http://dx.doi.org/10.14311/ppt.2019.1.7.

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A control and pulse discharge current limiting system integrated into an AC/DC converter and pulse modulator of a high voltage pulse generator have been developed. The peculiarity of such system\textquotesingle s operation is the stabilization of the power supplied to the discharge and the correction of the width of output electric pulses towards decrease upon reaching the specified pulsed current amplitude value. The system enables the pulse generator to work in the modes close to the ``short circuited load'' mode. In this case the driving module of a composite IGBT key performs the correction of the working pulse width and blocks the pulse generator operation if needed. The suggested circuit design solutions allow using the generator in a wide range of electric plasma-forming parameters' modes and working with various types of vacuum gas discharge systems.

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Irshad, Kashif. "Performance Improvement of Thermoelectric Air Cooler System by Using Variable-Pulse Current for Building Applications". Sustainability 13, nr 17 (28.08.2021): 9682. http://dx.doi.org/10.3390/su13179682.

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The thermoelectric air conditioning system (TE-AC) is a small, noiseless alternative to standard vapor compression refrigeration (VCR) systems. The cooling characteristics of a TE-AC system operating under two conditions, i.e., steady current and current pulses, are investigated in this study. This system consists of three thermoelectric modules, a heat sink, and an air circulation fan. The result shows that maximum temperature reduction in cooling side of TE-AC system was achieved at 6 A input current under steady state operation. The optimum performance of the TE-AC system under steady state operation depends upon the combined effect of the cooling load, Joule, Fourier, and Peltier heat. In TE-AC pulse operation, both current width and cooling load applied on the cold side of the thermoelectric module (TEMs) play an important role in achieving optimum cooling performance of the system. When normal input current operation (i.e., no current pulse) was compared to pulse-operated TE-AC system operation, it was found that pulse operation provides an additional average temperature reduction of 3–4 °C on the cold side of TEMs. Although on the hot side, it maintains a temperature in the range of 18 °C to 24 °C to reduce overshoot heat flux. The duration of operation is also important in determining pulse width and pulse amplitude. Minimum and overshoot peak temperature rises during each cycle for longer run operation. In the TE-AC system, the accumulated Joule heat during a current pulse frequently causes a temperature overshoot, which lasts much longer. As a result, the next current pulse was not released until the temperature of TE was restored to its initial value.

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Benaouda, Omar Fethi, Badreddine Babes, Mohamed Bouchakour, Sami Kahla i Azzedine Bendiabdellah. "Arc Welding Current Control Using Thyristor Based Three-Phase Rectifiers Applied to Gas Metal Arc Welding Connected to Grid Network". Journal Européen des Systèmes Automatisés 54, nr 2 (27.04.2021): 335–44. http://dx.doi.org/10.18280/jesa.540216.

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The purpose of the welding operation is to ensure the continuity of the materials to be assembled in large industrial sectors. This study aims to suggest a topology of the Thyristor based three-phase rectifiers applied to the Gas Metal Arc Welding (GMAW) process connected to the grid network, the output currents are controlled and using various pulsed forms such as square, annealing, and spike pulse operations and investigate and compare between the effects of the three references welding currents structures on the welding current, welding voltage, droplet diameter, and welding quality. To have the best pulse operation, the amplitude and frequency are kept the same for all operations, the application of meshing graphs in the references of welding currents structures, welding current, welding voltage, and droplet diameter can illustrate a clear comparison between them. The simulation results show that the square pulse operation is the best among them. The Single-Sided Amplitude Spectrum (SSAS) method is also applied to the welding current and droplet diameter of the three operations under slow and rapid droplet detachment rates to estimate the droplet detachment frequency. The results show the great success of the SSAS in estimating the precise frequency.

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Tikhomirov, S. A. "Femtosecond System with Pulse Pumping of Seed Laser and Amplifier by Using a Single Power Unit". Devices and Methods of Measurements 12, nr 1 (19.03.2021): 23–29. http://dx.doi.org/10.21122/2220-9506-2021-12-1-23-29.

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For several decades development of methods for generating ultrashort pulses has been an independent urgent scientific and technical problem. There is a constant improvement both in the methods of such pulses receiving and in methods of their use. The aim of this work was to investigate the possibility of realizing the coordinated operation of two fundamentally different types of pump lasers for the femtosecond oscillator and amplifier based on one single-lamp laser head and to create on this basis a compact high-power femtosecond system with pulsed pumping and one power unit.The practical implementation of two types of pulsed lasers (nano- and picosecond ones operating, respectively, in Q-switch and modelock regime) on a single laser head with two active elements and one pump lamp is carried out. The required synchronization in time the pump pulse femtosecond amplifier formation and quasi-stationary region of generated pulses in the output radiation of a femtosecond Ti:sapphire is obtained.On this basis a compact, pulse pumped monoblock laser system has been developed that can generate femtosecond pulses with a duration of 50–150 fs with an energy up to 1 mJ and a high enough pulse repetition rate (up to 1 kHz which is determined by the type of laser head and pump unit used). In the developed laser system a compact scheme of a stretcher-compressor with a single common diffraction grating is used.Laser systems of this type characterized by a relatively low cost due to the use of a single power supply unit for simultaneous pumping of the amplifier and oscillator, as well as lower requirements for the quality of optical elements and usage conditions due to the pulse mode of operation, are quite practical and can be used both in scientific research in the field of ultra-high-speed kinetic spectroscopy and nonlinear optics, as well as in numerous technical applications, particular in the precision processing of materials, as optical simulators of the action of heavy charged particles in testing the radiation resistance of integrated circuits and electronic modules.

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Zhang, Liqiang, Zhiyong Pan, Zhuang Zhuo i Yunzheng Wang. "Three Multiple-Pulse Operation States of an All-Normal-Dispersion Dissipative Soliton Fiber Laser". International Journal of Optics 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/169379.

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Multiple-pulse operation states of an all-normal-dispersion Yb-doped double-clad dissipative soliton fiber laser are investigated in this paper. The proposed laser can deliver harmonic mode-locked pulses, bound states of dissipative solitons, and dual-wavelength dual-pulses. Stable second-harmonic and third-harmonic mode-locked pulse trains are obtained with the output power of 1.39 W and 1.46 W, respectively, and the corresponding single pulse energies are 12.1 nJ and 8.5 nJ. With the adjustment of pump power and the wave plates, the fiber laser generates bound states of two or three dissipative solitons. Moreover, a dual-wavelength dual-pulse state is presented, where the output pulses from the nonlinear polarization rotation rejection port consists of the leading and trailing edges of the pulses circulating in the cavity.

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Xu, Nannan, Pengfei Ma, Shenggui Fu, Xinxin Shang, Shouzhen Jiang, Shuyun Wang, Dengwang Li i Huanian Zhang. "Tellurene-based saturable absorber to demonstrate large-energy dissipative soliton and noise-like pulse generations". Nanophotonics 9, nr 9 (12.02.2020): 2783–95. http://dx.doi.org/10.1515/nanoph-2019-0545.

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AbstractTwo-dimensional layered monoelemental materials (Xenes) with excellent optoelectronic properties have various property-related applications, such as energy, biomedicine, and optoelectronic devices. Xenes also show excellent performance in acting as saturable absorbers (SAs) for obtaining ultrafast laser operations. Few-layer tellurene as a typical Xenens exhibits distinct optoelectronic properties and promising practical application potential, and its nonlinear optical absorption characteristics and related ultrafast modulation applications have been investigated preliminarily. However, tellurene-based SAs to demonstrate large-energy mode-locked operations, which have special applications in industrial and scientific research areas, are seldom studied. In this work, we focus on the preparation of tellurene-based SAs and explore its applications in demonstrating large-energy mode-locked operations [dissipative soliton (DS) and noise-like pulses (NLP)]. For DS operation, the maximum average output power, pulse width, and largest pulse energy are 23.61 mW, 5.87 ps, and 1.94 nJ, respectively. NLP operation with a recorded average output power of 106.6 mW and a pulse energy of 8.76 nJ is also generated, which shows significant enhancement in comparison to previously reported Xenes-based works. Our contribution reveals the great potential and capacity of tellurene-based SAs in obtaining large-energy pulse operations and further promotes the explorative investigation of Xenes-based optoelectronic devices.

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Zhou, Yan, Keyun Zhang, Meisong Liao, Guoying Zhao i Yongzheng Fang. "Operating Vector Solitons with Chirped Sech Pulse Shapes". Photonics 9, nr 3 (28.02.2022): 143. http://dx.doi.org/10.3390/photonics9030143.

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In this paper, we report the theoretical results about operating vector solitons with chirped sech pulse shapes. In the operation, the shapes of temporal pulses and corresponding optical spectra in orthogonal directions will change, which are based on soliton parameters. When input orthogonal pulses have the same central wavelength of 1064 nm, the shift from the central wavelength always occurs for orthogonal pulses. When input orthogonal pulses have different central wavelengths of 1063 nm and 1065 nm, output pulse shapes and optical spectra with obvious multiple peak/dip structures can be achieved in orthogonal directions. Our theoretical results are meaningful for the study of vector soliton dynamics and have potential applications in optical communication and optical sensing.

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Łaszczych, Zbigniew, Mikołaj Krakowski i Grzegorz Soboń. "Mode-Locking Dynamics in an All-PM Figure-Nine Tm-Doped Fiber Laser". Applied Sciences 12, nr 20 (20.10.2022): 10613. http://dx.doi.org/10.3390/app122010613.

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We report a study on pulse dynamics in figure-nine Tm-doped all-polarization maintaining fiber laser. We analyzed laser operation from self-starting with multi-pulse dynamic to single-pulse operation by decreasing the pump power from the mode-locking threshold. By choosing a reliable setting of waveplates, our laser was generating pulses at the central wavelength of 1985 nm with a half-width of the spectrum, pulse duration, and pulse energy equal 6.4 nm, 650 fs, 177 pJ for the output port and 19.2 nm, 1279 fs, 57 pJ for the reject port in the single-pulse state. In the multi-pulse state, we recorded optical spectra, temporal waveforms, and average power at both exit ports. By analyzing temporal traces and output to reject port ratio power, we can distinguish between eight states of operation which follow an exact pattern. In the case of the single-pulse regime, we performed a further laser characterization, including relative intensity noise.

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Rozprawy doktorskie na temat "Pulse operation"

Werner, Steven P. "Initiator diffraction limits for pulse detonation engine operation". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Dec%5FWerner.pdf.

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Thesis (M.S. in Astronautical Engineering)--Naval Postgraduate School, December 2002.
Thesis advisor(s): Christopher M. Brophy, Jose O. Sinibaldi. Includes bibliographical references (p. 45-47). Also available online.

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Casper, Lars Christian. "On the operation of a long-pulse KrCl excimer laser". Enschede : University of Twente [Host], 2007. http://doc.utwente.nl/57863.

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Vanapalli, Srinivas. "High-frequency operation and miniaturization aspects of pulse-tube cryocoolers". Enschede : University of Twente [Host], 2008. http://doc.utwente.nl/58862.

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Tang, Jing-Min. "An experimental investigation of the operation of a Helmholz pulse combustor". Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/12008.

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Rasmeni, Sibusiso Wiseman. "Simulation of the switched reluctance machine under single pulse mode operation". Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53590.

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Thesis (MScEng)--University of Stellenbosch, 2003.
ENGLISH ABSTRACT: Two distinct simulation methods have been developed to simulate the single and the multi-phase excited current waveforms of the switched reluctance machine (SRM) under single pulse mode operation. These simulation methods are explained and evaluated in this thesis. A non-commercial finite element package that takes the SRM's nonlinear magnetic property into account is used in this regard. The simulation program uses the finite element solution directly during the simulation. Both simulation methods have been investigated in terms of result and total simulation time. In this investigation it is shown how feasible the simulation methods will be with the next generation of fast computers. The factors affecting the simulated current waveforms of the SRM under single pulse mode operation are investigated in detail in this thesis. With these factors taken into account, the measured and simulated multi-phase current waveforms are compared with each other and discussed.
AFRIKAANSE OPSOMMING: Twee verskillende simulasie metodes is ontwikkel om die enkel- en multi-fase stroomgolfvorms van die geskakelde reluktansiemasjien (GRM) onder enkelpulsmodus-werking te simuleer. In hierdie tesis word hierdie simulasie metodes verduidelik en geëvalueer. 'n Nie-kommersiële eindige element pakket wat die nielinieêre magnetiese eienskap van die GRM in ag neem is in hierdie verband gebruik. Die simulasie program gebruik die eindige-element oplossing direk gedurende die simulasie. Beide simulasie metodes is ondersoek in terme van resultaat en simulasietyd. In hierdie ondersoek word getoon hoe uitvoerbaar hierdie tipe simulasie metodes gaan wees met die volgende hoë spoed generasie rekenaars. Die faktore wat die gesimuleerde stroomgolfvorms van die GRM onder enkelpulsmodus-werking beïnvloed word deeglik in hierdie tesis ondersoek. Met hierdie faktore in ag geneem word die gemete en gesimuleerde multi-fase stroomgolfvorms met mekaar vergelyk en bespreek.

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Matos, Antonio P. "Characterization and application of four-layer semiconductor structures in pulse mode operation". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Sep%5FMatos.pdf.

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Thesis (M.S. in Physics)--Naval Postgraduate School, September 2006.
Thesis Advisor(s): Gamani Karunasiri, James H. Luscombe. "September 2006." Includes bibliographical references (p. 69-70). Also available in print.

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Cirineo, Tony. "Doppler Video Signal Conditioning, Theory of Operation". International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/611417.

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International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California
This paper describes some of the signal conditioning and processing circuits that were developed to reconstruct the doppler video signal from a radar receiver under test. The reconstructed doppler video signal is then digitized and put into a telemetry frame for transmission to a ground receiving station.

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Lin, Jiunn-Yuan. "Optimisation of multi-pulse pumping for collisional excitation X-ray lasers". Thesis, University of Essex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265028.

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Atkinson, Terry. "Modeling of magnetic optic for the short pulse mode operation of Energy Recovery Linac based light sources". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17300.

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Das Forschungsfeld der Synchrotronstrahlungsquellen hat sich in den letzen Jahren entscheidend weiterentwickelt. Alle Zukunftsideen, unabhängig von ihrer Komplexität, haben dennoch eines gemeinsam: die Erzeugung kurzer Pulse. Die Naturwissenschaften haben die Spitzenbrillanz, die mit Hilfe kürzester Pulse produziert werden kann, als neues Schlüsselwerkzeug entdeckt. Die Nutzergemeinschaft verlangt nicht mehr nur ein statisches Bild, sondern vielmehr eine Reihe von bewegten Aufnahmen atomarer Substrukturen und den dazugehöringen Prozessen. Existierende dritte Generation Synchrotronstrahlungsquellen werden an die neuen Herausforderungen angepasst: Verbesserungen an der Magnet-Optik sowie der Einbau modernster Beschleunigertechnologie ermöglichen die Erzeugung kürzester Pulse mit höchster Brillanz für zeitaufgelöste Experimente. Ein möglicher Kandidat für die Lichtquelle der nächsten Generation ist ein Linear-Beschleuniger mit Energierückgewinnung. Durch die Verwendung langer Beschleunigungsstrukturen kann es, selbst bei hohen Energien, nicht zur Ausbildung des Emittanzgleichgewichts wie in Speicherringen kommen. Durch die Verwendung Impulsabhängiger-Umlaufbahnen und der Rückgewinnung der Strahlenergie ist es mit `Energy Recovery Linac'' (ERL)-basierten Quellen energieeffizient möglich, hochenergetische Elektronen-Pulse im Femtosekundenbereich zu erzeugen. Die longitudinale Elekronstrahldynamik solcher ERLs ist eines der Hauptthemen dieser Arbeit. Umfangreiche Simulationen über die gesamte Maschine wurden im Rahmen der `Femto-Science Factory'' Lichtquellen Studie durchgeführt. Die Begrenzungen des Kurzpulsmodus Betriebes wurden untersucht und mit den Erwartungen verglichen. Besondere Aufmerksamkeit lag dabei auf den 6D Elektronenstrahleigenschaften, insbesondere auf der Vermeidung von Strahlaufweitungen, die mit der Erzeugung von Ultra-Kurzpulsen einhergehen können.
Synchrotron light sources are entering a new era. No matter how elaborate, all the next generation proposals share a common necessity; the production of ultra-short electron bunches. There is an evolution in the field of science under investigation using the high peak brilliance generated from such bunches. The user community is demanding not just pictures but videos of atomic substructures and the processes that define them. Existing 3rd generation facilities are modifying their magnetic lattices and upgrading the acceleration schemes in order to keep up with this trend of generating short pulses with ultimate brilliance for time resolved experiments. A possible candidate for the next generation light source is one based on ERL technology. Using long linacs to accelerate to high energies overcomes the present limitation of emittance equilibrium in storage rings. By implementing independent arcs for acceleration and deceleration while recuperating the beams energy, ERL based sources are theoretically capable of efficiently producing high energy femtosecond long bunch lengths. The study of the longitudinal motion of the beam through single pass magnetic optic in combination with linacs is the main topic of this thesis. Dedicated start-to-end simulations in the framework of the Femto-Science Factory large scale light source are undertaken. The expectations and restrictions on the short pulse mode (SPM) operation are comprehensively examined in this work. Particular attention is given to the 6D electron beam properties and with it the beam degradation caused by the production of ultra-short bunches.

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Sims, Robert. "Development of Thulium Fiber Lasers for High Average Power and High Peak Power Operation". Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5706.

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High power thulium fiber lasers are useful for a number of applications in both continuous-wave and pulsed operating regimes. The use of thulium as a dopant has recently gained interest due to its large bandwidth, possibility of high efficiency, possibility of high power and long wavelength ~1.8 – 2.1 [micro]m. The longer emission wavelength of Tm-doped fiber lasers compared to Yb- and/or Er-doped fiber lasers creates the possibility for higher peak power operation due to the larger nonlinear thresholds and reduced nonlinear phase accumulation. One primary interest in Tm-doped fiber lasers has been to scale to high average powers; however, the thermal and mechanical constraints of the fiber limit the average power out of a single-fiber aperture. One method to overcome the constraints of a single laser aperture is to spectrally combine the output from multiple lasers operating with different wavelengths into a single beam. In this thesis, results will be presented on the development of three polarized 100 W level laser systems that were wavelength stabilized for SBC. In addition to the development of the laser channels, the beams were combined using bandpass filters to achieve a single near diffraction-limited output. Concurrently, with the development of high average power systems there is an increasing interest in femotosecond pulse generation and amplification using Tm- doped fiber lasers. High peak power sources operating near 2 [micro]m have the potential to be efficient pump sources to generate mid-infrared light through supercontinuum generation or optical parametric oscillators. This thesis focuses on the development of a laser system utilizing chirped pulse amplification (CPA) to achieve record level energies and peak powers for ultrashort pulses in Tm-doped fiber. A mode-locked oscillator was built to generate femtosecond pulses operating with pJ energy. Pulses generated in the mode-locked oscillator were limited to low energies and contained spectral modulation due to the mode-locking mechanism, therefore, a Raman-soliton self-frequency shift (Raman-SSFS) amplifier was built to amplify pulses, decrease the pulse duration, and spectrally clean pulses. These pulses were amplified using chirped pulse amplification (CPA) in which, limiting factors for amplification were examined and a high peak power system was built. The primary limiting factors of CPA in fibers include the nonlinear phase accumulation, primarily through self-phase modulation (SPM), and gain narrowing. Gain narrowing was examined by temporally stretching pulses in a highly nonlinear fiber that both stretched the pulse duration and broadened the spectrum. A high peak power CPA system amplified pulses to 1 [micro]J energy with 300 fs compressed pulses, corresponding to a peak power >3 MW. High peak power pulses were coupled into highly nonlinear fibers to generate supercontinuum.
Ph.D.
Doctorate
Optics and Photonics
Optics and Photonics
Optics

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Książki na temat "Pulse operation"

United States. National Aeronautics and Space Administration., red. Operation of a radar altimeter over the Greenland ice sheet: A thesis. [Washington, DC: National Aeronautics and Space Administration, 1996.

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K, Sood Pradeep, i Lewis Research Center, red. Study of the generator/motor operation of induction machines in a high frequency link space power system. Madison, Wis: University of Wisconsin, [Dept. of Electrical and Computer Engineering, 1987.

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Marchenko, Aleksey, i Mihail Nemcov. Electronics. ru: INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1587595.

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The material of module 2 "Electronics" is systematically presented in accordance with the modern university program of the discipline " Electrical Engineering and Electronics" for non-electrotechnical areas of training of bachelors and certified specialists. The element base of semiconductor electronics devices is considered: classification, voltage and frequency characteristics, features of the use of electronic devices in various operating modes are given. The principles of construction and functioning of typical analog, pulse and digital devices are described in detail. A separate chapter is devoted to the principles of converting light energy into electrical energy and vice versa, the design and operation of optoelectronic devices and fiber- optic lines of information transmission. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of higher educational institutions studying in non-electro- technical areas of bachelor's and graduate training.

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D, Keeffe, red. PULSE, an Ada-based distributed operating system. London: Academic Press, 1985.

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Solomon Islands. Office of the Auditor General., red. Acquisition and operation of two 57 metre purse seine fishing vessels. Solomon Islands: Auditor General, 1995.

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Aalfs, David D. Real-time processing of radar return on a parallel computer. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1992.

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Aalfs, David D. Real-time processing of radar return on a parallel computer. Hampton, Va: Langley Research Center, 1992.

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Aalfs, David D. Real-time processing of radar return on a parallel computer. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, 1992.

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United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., red. Real-time processing of radar return on a parallel computer. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1992.

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Pulse and repulse: Troop carrier and airborne teams in Europe during World War II. Austin, Tex: Eakin Press, 1995.

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Części książek na temat "Pulse operation"

Weik, Martin H. "pulse operation". W Computer Science and Communications Dictionary, 1375. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_15100.

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de Groot, J. J., i J. A. J. M. van Vliet. "High-Frequency and Pulse Operation". W The High-Pressure Sodium Lamp, 208–26. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-09196-6_7.

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Lenzing, Erik H., R. A. Pastore, C. D. Hechtman, H. E. Lenzing i E. E. Kunhardt. "Ultra-Wideband Antenna for High-Power Operation". W Ultra-Wideband, Short-Pulse Electromagnetics 2, 209–14. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4899-1394-4_23.

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Thummes, G., R. Landgraf, F. Giebeler, M. Mück i C. Heiden. "Pulse Tube Refrigerator for High-TC Squid Operation". W A Cryogenic Engineering Conference Publication, 1463–70. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0373-2_184.

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Anza, S., M. Mattes, J. Armendariz, J. Gil, C. Vicente, B. Gimeno, V. E. Boria i D. Raboso. "RF Breakdown Prediction for Microwave Passive Components in Multi-carrier Operation". W Ultra-Wideband, Short Pulse Electromagnetics 9, 375–81. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-0-387-77845-7_44.

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Ohtani, Yasumi, Masahiko Takahashi, Toru Kuriyama, Hideki Nakagome, Gao Jin Iin, Hiroshi Tanida, Yoichi Matsubara, Masanao Narita, Hiroshi Murakami i Haruyuki Okuda. "Two-Stage Pulse Tube Refrigerator for 20 K Operation". W Cryocoolers 8, 337–43. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4757-9888-3_34.

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Kuehl, T., V. Bagnoud, C. Bruske, S. Borneis, B. Ecker, U. Eisenbarth, J. Fils i in. "Versatile High-Energy and Short-Pulse Operation of PHELIX". W Springer Proceedings in Physics, 53–58. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9924-3_6.

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Wang, Qianjin, Wenbo Han, Wenjie Ding, Wenchuan Ding i Yongzhu Li. "Research on Operation Data Mining of Pulse Dust Collector". W Technological Advancement in Mechanical and Automotive Engineering, 935–46. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1457-7_72.

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Basov, N. G., P. G. Kryukov i N. N. Yuryshev. "The Pulse-Repetition Operation Regime of a Chemical Oxigen-Iodine Laser". W Trends in Quantum Electronics, 23–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-662-10624-2_3.

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van Heerbeek, P. A., M. B. van Gijzen, C. Vuik i M. R. de la Fonteijne. "Numerical Modelling of a Pulse Combustion Burner: Limiting Conditions of Stable Operation". W Progress in Industrial Mathematics at ECMI 2008, 875–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12110-4_140.

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Streszczenia konferencji na temat "Pulse operation"

Mahbobzadeh, M., A. Mukherjee i S. R. J. Brueck. "Multiple pulse gain switched operation of surface-emitting semiconductor lasers". W OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.mz3.

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Surface-emitting semiconductor lasers are attractive for applications in optical computing, coherent communications, high-power two dimensional arrays, and integrated optoelectronics. For applications involving information processing, high speed pulsed operation of these lasers is necessary. The very short cavity length (~2–5 μm) results in a very short transit time; however, the required high-Q resonator substantially lengthens the cavity lifetime, and hence the gain-switched pulsewidth. Recent optical pumping experiments have demonstrated ultrafast gain-switched operation with pulse widths as short as 3.9 ps. In this report, we present the first results on optically pumped double-pulse excitation with pulse delays as short as 10 ps. Independently switched high-bit-rate multiple pulse trains are required for transmitting information. For pumping with a pair of time delayed pulses, we observe output pulse separations shorter than the input pulse separation. This suggests the use of SELs for optical multiplexing and signal processing. Output pulse separation and pulse width as a function of the input pulse separation at a constant pump power show good agreement with the theoretical simulation. For large pulse separations, the input and output pulse separations are identical. The shortest output pulse separation having a 7:1 peak to background ratio, for a BER of <10−9, was about 35 ps for an input pulse separation of 50 ps. This is readily extendable to smaller pulse separations for higher speed pulses by using lower-Q resonator structures.

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Chepusov, A. S., A. A. Komarskiy, S. R. Korzhenevskiy i O. D. Krasniy. "Study of field electron emission properties of commercial graphite cathodes in pulse-repetitive mode". W VIII Information school of a young scientist. Central Scientific Library of the Urals Branch of the Russian Academy of Sciences, 2020. http://dx.doi.org/10.32460/ishmu-2020-8-0007.

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The article considers field emission cathodes from industrial graphites MG, MPG-7, and GMZ operated in the pulse-periodic mode with the pulse repetitionrate of 1 to 30 Hz. The operation of field emitters in the pulsed mode differs from operation at a constant voltage. Under stabilization of the high potential level, the amplitude of the pulses of the emission current decreases that leads to increasing the operating voltage in the pulsed mode. During operation of the graphite cathode (when the pulse current is recorded), the operating voltage at the anode stabilizes and oscillates within 5%. Operation in the direct current mode under similar conditions is accompanied by a change in the voltage value by more than 10 %.

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Kuhn, William L., David R. Rector, Judith A. Bamberger i Michael J. Minette. "Physical Attributes of Pulse Jet Mixer Operation". W ASME 2013 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fedsm2013-16459.

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Vessels mixed using pulse jet mixers that produce a periodic, rather than steady, flow present challenges with respect to modeling slurry mixing. A PJM is a cylindrical tank within the mixed tank that has a conical bottom with an orifice through which process fluid cyclically enters and is expelled forcefully by pressurizing the air space above the liquid in the PJM. Between pulses, some of the solids settle from the slurry, which nominally is a failure in mixing, but during the pulses (if operated to attain bottom clearing conditions), all of the solids are resuspended and made available for processing or transfer. Overall, mixing is successful if the solids are processed and removed from the vessel as needed when averaged over repeated PJM cycles. This paper describes the physics of pulse jet mixing process based on physical observation during experiments and analysis of experimental concentration profile data obtained during the mixing cycle.

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Yao, J. Q., Y. Z. Yu, X. L. Wang, F. Wu, R. Zhang, G. H. Zhou, Y. Xiao, Y. M. Yang, J. K. Li i Y. P. Yu. "Study of Kilowatt Pulsed Laser with Tuning Pulse Width and Pulse Rise Time". W Solid State Lasers: Materials and Applications. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/sslma.1997.fb2.

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The high power pulsed Nd:YAG laser is very useful for material processing and other applications. Different applications need different laser pulses with different pulse widths and rise times. A high power pulsed Nd:YAG laser were successfully designed , it includes three big YAG rods (ϕ10 × 150mm), six Krypton lambs and six power supplies with different pulse width and rise times .Here we use Krypton lamb instead of Xenon lamb because it has better spectrum match feature , high conversion efficiency and suited to long pulse operation. The power supplies have resonant and switched types(VDMOS and IGBT). Cooling system has internal and external circular systems. Whole system has a laser light fiber delivery device which can be transmitted high energy. Table shows the light shapes of Krypton lamp and shapes of laser pulses. The pulsewidth can be tuning from 0.3 to 6 ms, the rise time can be tuning from 0.2 to 0.8ms.

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Hosokawa, Hiroshi, Nao Akashi, Yuji Oigawa i Hideyuki Horisawa. "Short Pulse Operation of a Laser-Assisted Pulsed Plasma Thruster". W 50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2014. http://dx.doi.org/10.2514/6.2014-3536.

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Mohanraj, Rajendran, Charles Merkle i Houshang Ebrahimi. "Modeling of pulse detonation engine operation". W 39th Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-475.

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Miller, Robert B. "Repetitive pulse operation of reltron tubes". W Optical Science, Engineering and Instrumentation '97, redaktor Howard E. Brandt. SPIE, 1997. http://dx.doi.org/10.1117/12.284004.

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Mills, K., J. Xiong, X. Liu i P. Venkatesh. "Informing the power system performance envelope for pulse load operation". W 14th International Naval Engineering Conference and Exhibition. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2515-818x.2018.020.

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Future warship power systems may be subject to pulsed loads manifesting through emergent combat systems such as directed energy weapons, associated sensors and electronic warfare equipment. The integration of combat system loads with the ship’s power system means that performance becomes intrinsically linked to combat effectiveness. Hence, understanding the capability of the power system to service such loads is vital in ensuring the operator’s ability to fight the ship. This paper describes the challenge of pulse load integration from the perspective of the power system design authority. Modelling and simulation has been employed to study the electrical response of a representative power system when subject to a range pulse load characteristics. Subsequently, the effects of pulse loading are reviewed in terms of impact upon the prime mover. It is concluded that whilst electrical supply performance can be maintained within allowable power quality limits as defined by STANAG 1008, the mechanical effects can be to the detriment of engine life, highlighting key recommendations to understand both electrical and mechanical performance envelope in design for integration.

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James, G. F., G. B. McHale, P. A. Arnold, A. S. Runtal, P. S. Cardinale i L. S. Pades. "NIF solid-state switch pulse generator optimization for multi-pulse operation". W 2014 IEEE International Power Modulator and High Voltage Conference (IPMHVC). IEEE, 2014. http://dx.doi.org/10.1109/ipmhvc.2014.7287238.

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Vasiliev, M., A. Mahir i T. Vasilieva. "Pulse operation modes of hybrid plasma generators". W 2008 IEEE 35th International Conference on Plasma Science (ICOPS). IEEE, 2008. http://dx.doi.org/10.1109/plasma.2008.4591194.

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Raporty organizacyjne na temat "Pulse operation"

Stolarski, David J., Gary D. Noojin i Clarence P. Cain. Operating Manual for Ultrashort Pulse Laser System-II (1060 nm Operation). Fort Belvoir, VA: Defense Technical Information Center, grudzień 1997. http://dx.doi.org/10.21236/ada333217.

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Nguyen, Doan Ngoc. Development and operation of Pulse Magnet at LANL’s PFF. Office of Scientific and Technical Information (OSTI), wrzesień 2017. http://dx.doi.org/10.2172/1392785.

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Webber, R. C. Report on booster high pulse repetition rate operation tests conducted on March 29, 1998. Office of Scientific and Technical Information (OSTI), kwiecień 1999. http://dx.doi.org/10.2172/5495.

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Al-Qadi, Imad, Hasan Ozer, Aravind Ramakrishnan i Ashraf Alrajhi. Pavement Distresses Due to Truck Platoons: A Holistic Analysis. Illinois Center for Transportation, sierpień 2023. http://dx.doi.org/10.36501/0197-9191/23-015.

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Currently, AASHTOWare PMED does not contain a framework to compute distresses for loading scenarios like truck platoons. Truck platoons reduce fuel consumption and improve safety while increasing pavement damage because of a reduction in wander and rest period. The important parameters of truck platoons are wander, rest period, and penetration level. Unlike wander, the effect of reduced rest period on permanent deformation and platoon penetration level are not well documented. Rest period (i.e., truck spacing) is a critical parameter in platoons that can be controlled to reduce damage or to improve fuel savings. Unlike fatigue cracking, shorter rest periods resulted in lower permanent deformation through conventional repeated load triaxial testing. However, the test does not entail a representative load stress pulse because of moving loads. This study uses modified triaxial testing equipment to simulate different load pulses. Reduced triaxial compression was critical over the conventional load stress pulse. For all representative pulses, the effect of rest period was similar (i.e., increasing rest period increased permanent deformation). The researchers developed a framework to compute pavement distresses as a function of truck platoon parameters. Truck platoons distributed uniformly on sublanes resulted in the lowest damage, even lower than a conventional trucking operation. Truck spacing of 60 ft is optimal in terms of safety, as the difference in distresses were minimal compared to spacing at 18 ft.

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Belenky, Gregory. Design and Implementation of High Power Pulse Operation Broadened Waveguide 1.5 mum InGaAsP/InP MQW Lasers. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2001. http://dx.doi.org/10.21236/ada398335.

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Collins, Eric S., i Jennifer L. Gottfried. Safe Operation and Alignment of the Variable Pulse Width Laser at the US Army Research Laboratory. Fort Belvoir, VA: Defense Technical Information Center, luty 2016. http://dx.doi.org/10.21236/ad1004601.

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Zhang, Qiming. Ferroelectric Polymers with Ultrahigh Energy Density, Low Loss, and Broad Operation Temperature for Navy Pulse Power Capacitors. Fort Belvoir, VA: Defense Technical Information Center, luty 2014. http://dx.doi.org/10.21236/ada622919.

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Medley, S. S. ,. PPPL. Operation of the TFTR Pellet Charge Exchange Diagnostic in the Pulse Counting Mode during H+ RF-minority Heating. Office of Scientific and Technical Information (OSTI), maj 1998. http://dx.doi.org/10.2172/289901.

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Butler, K. L. OPERATION SUN BEAM, SHOTS LITTLE FELLER II and SMALL BOY. Project Officer's Report - Project 7.16. Airborne E-Field Radiation Measurements of Electromagnetic Pulse Phenomena. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1985. http://dx.doi.org/10.21236/ada995380.

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Yamamoto Junji, D. J. Massoletti, D. W. Heikkinen i Kenji Sumita. Operation in pulsed mode at RTNS-II. Office of Scientific and Technical Information (OSTI), wrzesień 1987. http://dx.doi.org/10.2172/6380914.

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