Academic literature on the topic 'Length spectrum'

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Journal articles on the topic "Length spectrum"

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PONG, WAI YAN. "LENGTH SPECTRA OF NATURAL NUMBERS." International Journal of Number Theory 05, no. 06 (2009): 1089–102. http://dx.doi.org/10.1142/s1793042109002584.

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A natural number n can generally be written as a sum of m consecutive natural numbers for various values of m ≥ 1. The length spectrum of n is the set of these admissible m. Two numbers are spectral equivalent if they have the same length spectrum. We show how to compute the equivalence classes of this relation. Moreover, we show that these classes can only have either 1,2 or infinitely many elements.
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Stoyanov, Luchezar. "On the scattering length spectrum." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 325, no. 11 (1997): 1169–74. http://dx.doi.org/10.1016/s0764-4442(97)83548-3.

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Biswas, Debabrata. "Length spectrum of chaotic billiards." Physical Review Letters 71, no. 17 (1993): 2714–17. http://dx.doi.org/10.1103/physrevlett.71.2714.

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Sormani, Christina. "Convergence and the length spectrum." Advances in Mathematics 213, no. 1 (2007): 405–39. http://dx.doi.org/10.1016/j.aim.2007.01.001.

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Khanevsky, Michael. "Hofer's length spectrum of symplectic surfaces." Journal of Modern Dynamics 9, no. 01 (2015): 219–35. http://dx.doi.org/10.3934/jmd.2015.9.219.

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Schenck, Emmanuel. "Exponential gaps in the length spectrum." Journal of Modern Dynamics 16 (2020): 207–23. http://dx.doi.org/10.3934/jmd.2020007.

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Canary, Richard D., and Christopher J. Leininger. "Kleinian groups with discrete length spectrum." Bulletin of the London Mathematical Society 39, no. 2 (2007): 189–93. http://dx.doi.org/10.1112/blms/bdl005.

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Nozari, K., and P. Pedram. "Minimal length and bouncing-particle spectrum." EPL (Europhysics Letters) 92, no. 5 (2010): 50013. http://dx.doi.org/10.1209/0295-5075/92/50013.

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Popov, Georgi S. "Length spectrum invariants of Riemannian manifolds." Mathematische Zeitschrift 213, no. 1 (1993): 311–51. http://dx.doi.org/10.1007/bf03025724.

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Stoyanov, L. "Rigidity of the scattering length spectrum." Mathematische Annalen 324, no. 4 (2002): 743–71. http://dx.doi.org/10.1007/s00208-002-0358-9.

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Dissertations / Theses on the topic "Length spectrum"

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Tamarit, Sariol Anna. "Singular phenomena in the length spectrum of analytic convex curves." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/318372.

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Consider the billiard map defined inside an analytic closed strictly convex curve Q. Given q>2 and 0<p<q relatively prime integers, there exist at least two (p,q)-periodic trajectories inside Q. The main goal of this thesis is to study the maximal difference of lengths among (p,q)-periodic trajectories on the billiard, D(p,q). The quantity D(p,q) gives some dynamical and geometrical information. First, it characterizes part of the length spectrum of Q and so it relates to Kac's question, "Can one hear the shape of a drum?''. Second, D(p,q) is an upper bound of Mather's DW(p/q) and so it quant
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Faulkner, Sean (Sean Anthony) Carleton University Dissertation Engineering Electrical. "Determination of maximal-length sequences by weight distribution analysis." Ottawa, 1989.

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Moore, Megan O. 'Neal. "One Size Does Not Fit All: Optimizing Sequence Length with Recurrent Neural Networks for Spectrum Sensing." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/104050.

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With the increase in spectrum congestion, intelligent spectrum sensing systems have become more important than ever before. In the field of Radio Frequency Machine Learning (RFML), techniques like deep neural networks and reinforcement learning have been used to develop more complex spectrum sensing systems that are not reliant on expert features. Architectures like Convolutional Neural Networks (CNN) and Recurrent Neural Networks (RNN) have shown great promise for applications like automated modulation classification, signal detection, and specific emitter ID. Research in these areas has prim
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Hamilton, Katie. "An exploration of the relationship between autism spectrum disorders, theory of mind and the serotonin transporter promoter length polymorphism." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/24321.

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Includes bibliographical references<br>Autism Spectrum Disorder (ASD) is a highly heritable prevalent pervasive developmental disorder. All cases have deficits in social communication and interaction and in restricted and repetitive behaviours and interests. The mechanisms underlying different clinical presentations remain elusive. Deficits in Theory of Mind (ToM), the ability to understand that others have mental states independent of one's own, have been suggested as a possibly underlying the socia l deficits in ASD. The serotonin transporter promoter length polymorphism (5 - HTTLPR) has b
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Abuzaid, Dina Asaad. "A classification of the point spectrum of constant length substitution tiling spaces and general fixed point theorems for tilings." Thesis, University of Leicester, 2016. http://hdl.handle.net/2381/37027.

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We examine the point spectrum of the various tiling spaces that result from different choices of tile lengths for substitution of constant length on a two or a three letter alphabet. In some cases we establish insensitivity to changes in length. In a wide range of cases, we establish that the typical choice of length leads to trivial point spectrum. We also consider a problem related to tilings of the integers and their connection to fixed point theorems. Using this connection, we prove a generalization of the Banach Contraction Principle.
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Hor, Yuenkeung. "The Daya Bay Reactor Neutrino Experiment." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/50523.

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The Daya Bay experiment has determined the last unknown mixing angle $theta_{13}$. This thesis describes the layout of the experiment and the detector design. The analysis presented in the thesis covered the water attenuation, spent fuel neutrino and electron anti-neutrino spectrum. Other physics analysis and impact to future experiments are also discussed.<br>Ph. D.
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Efstration, Katherine M. Keiley Margaret K. Smith Thomas A. (Thomas Alton) Mize Jacquelyn. "The effect of depressotypic attributions on marital satisfaction as mediated by spousal support and moderated by length of marriage in mothers of children with autism spectrum disorders." Auburn, Ala, 2009. http://hdl.handle.net/10415/1903.

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Zare, Aurea Tucay. "Length dependence of the Raman spectra of carbon nanotubes." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/47749.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2009.<br>Includes bibliographical references.<br>DNA-wrapping technology, combined with size-exclusion chromatography, have made possible the sorting of carbon nanotubes according to length. In particular, length sorted nanotube samples, with finite lengths approaching the exciton size, are now available. Hence, experiments that explore the finite size effects, in addition to length dependence, are now possible. Although there are many experimental and theoretical studies of the diamet
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Venn, Madan R. "CONVOLUTIONAL CODED GENERALIZED DIRECT SEQUENCE SPREAD SPECTRUM." Cleveland State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1212066245.

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Schreibman, Ken L. "Spectral analysis of cardiac cycle length variations in sinus and ventricular rhythms." Case Western Reserve University School of Graduate Studies / OhioLINK, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=case1054827875.

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Books on the topic "Length spectrum"

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A, Jansson Peter, ed. Deconvolution of images and spectra. 2nd ed. Academic Press, 1997.

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Analysis of spectrum utilization and message length statistics for the railroad land mobile radio service. U.S. Dept. of Commerce, National Telecommunications and Information Administration, 1997.

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Siddiqui, Salman, and Dhananjay Desai. Drug-induced lung disease. Edited by Patrick Davey and David Sprigings. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199568741.003.0144.

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Pulmonary drug toxicity is being increasingly recognized as a cause of various forms of lung disease. The spectrum of disease can range from transient, minor reactions to rapidly progressive disease with fatal consequences. A large number of drugs are linked to pulmonary disease; however, causality is often difficult to establish, because the length of the latency period between exposure and the onset of disease can vary and because there can be discordance between symptom development and the appearance of radiological changes, which may not be present at all (e.g. angiotensin-converting enzym
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Kawahara, Shigeto, and Melanie Pangilinan. Spectral continuity, amplitude changes, and perception of length contrasts. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198754930.003.0002.

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Japanese displays a singleton/geminate contrast in obstruents and nasals, but not in glides. Patterns of emphatic gemination show that Japanese avoids creating new nasal geminates. This chapter tests hypotheses about why Japanese shows these preferences. Concerning the distinction between obstruent geminates and sonorant geminates, dispreference of sonorant geminates may exist because these geminates are easily confused with corresponding singletons. This confusability problem arises because sonorants are spectrally continuous with flanking vowels, and consequently perception of their constric
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Robolin, Stéphane. Cultivating Correspondences; or, Other Gestures of Belonging. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252039478.003.0004.

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Transnationalism is not the exclusive province of globe-trotting authors, but also includes the practices of those who could not access the means of transatlantic mobility. This chapter begins by considering Bessie Head's exilic life and her quest for belonging that motivated the grounded transnationalism she expressed. It then investigates one of its most exemplary practices: her letter writing, with particular attention to the set of letters between Head and her four African American correspondents: Nikki Giovanni, Toni Morrison, Alice Walker, and Michelle Cliff. Some of their epistolary exc
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Uden, James. Spectres of Antiquity. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190910273.001.0001.

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Gothic literature imagines the return of ghosts from the past. What about the classical past? Spectres of Antiquity is the first full-length study describing the relationship between Greek and Roman culture and the Gothic novels, poetry, and drama of the eighteenth and early-nineteenth century. Rather than simply representing the opposite of classical aesthetics and ideas, the Gothic emerged from an awareness of the lingering power of antiquity, and it irreverently fractures and deconstructs classical images and ideas. The Gothic also reflects a new vision of the ancient world: no longer inspi
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Solymar, L., D. Walsh, and R. R. A. Syms. The electron as a wave. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198829942.003.0002.

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Discusses the Davisson–Germer experiment in which electrons pass through a screen having one or two slits, and shows the necessity for a wave theory. The operation of an electron microscope is explained and some properties of the waves including the uncertainty between the simultaneous determination of position and momentum of the particle. Analogies with classical phenomena are discussed, namely the Fourier transform relationship between pulse length and spectral width, and the size of an aperture aerial and its relationship to the beamwidth.
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Farb, Benson, and Dan Margalit. Pseudo-Anosov Theory. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691147949.003.0015.

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This chapter focuses on the construction as well as the algebraic and dynamical properties of pseudo-Anosov homeomorphisms. It first presents five different constructions of pseudo-Anosov mapping classes: branched covers, constructions via Dehn twists, homological criterion, Kra's construction, and a construction for braid groups. It then proves a few fundamental facts concerning stretch factors of pseudo-Anosov homeomorphisms, focusing on the theorem that pseudo-Anosov stretch factors are algebraic integers. It also considers the spectrum of pseudo-Anosov stretch factors, along with the speci
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Deruelle, Nathalie, and Jean-Philippe Uzan. The wave vector of light. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0022.

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This chapter shows how simple world lines of zero length can describe an undulatory aspect of light—namely, its frequency. It first encodes the information about the frequency of a monochromatic light wave in the zeroth component of its wave vector. An alternative method of taking into account the wave nature of light is based on the fact that the emission of successive light corpuscles by the source also defines the period of a light signal. To illustrate, the chapter provides the example of a light source and a receiver moving along the X axis of a frame S. Finally, this chapter illustrates
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Book chapters on the topic "Length spectrum"

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Polterovich, Leonid. "Length Spectrum." In The Geometry of the Group of Symplectic Diffeomorphism. Birkhäuser Basel, 2001. http://dx.doi.org/10.1007/978-3-0348-8299-6_9.

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Diehl, Joshua. "Phrase Length." In Encyclopedia of Autism Spectrum Disorders. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1698-3_359.

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Campbell, Daniel, Corey Ray-Subramanian, Winifred Schultz-Krohn, et al. "Typical Length." In Encyclopedia of Autism Spectrum Disorders. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1698-3_101497.

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Diehl, Joshua J. "Phrase Length." In Encyclopedia of Autism Spectrum Disorders. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4614-6435-8_359-3.

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Diehl, Joshua J. "Phrase Length." In Encyclopedia of Autism Spectrum Disorders. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-91280-6_359.

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Prest, Mike. "Topological and Geometric Aspects of the Ziegler Spectrum." In Infinite Length Modules. Birkhäuser Basel, 2000. http://dx.doi.org/10.1007/978-3-0348-8426-6_19.

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Hutchins, Tiffany, Giacomo Vivanti, Natasa Mateljevic, et al. "Mean Length of Utterance (MLU)." In Encyclopedia of Autism Spectrum Disorders. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1698-3_1110.

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Gabig, Cheryl Smith. "Mean Length of Utterance (MLU)." In Encyclopedia of Autism Spectrum Disorders. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-91280-6_1110.

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Wilkinson, Amie. "Lectures on marked length spectrum rigidity." In Geometric Group Theory. American Mathematical Society, 2014. http://dx.doi.org/10.1090/pcms/021/09.

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Gauzzi, Andrea. "The Spectrum of Thermodynamic Fluctuations in Short Coherence Length Superconductors." In Pair Correlations in Many-Fermion Systems. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4899-1555-9_6.

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Conference papers on the topic "Length spectrum"

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Kirezci, Cagil, and Alexander V. Babanin. "Effect of Spectrum Tail Length on Modulational Instability and Freak Wave Occurrence in JONSWAP Sea States." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95740.

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Abstract In this study, probability of freak wave occurrence due to modulational instability in JONSWAP sea states are investigated. This investigation has been conducted based on the quantitative indicators of instability in wave spectrum, which are two Benjamin-Feir index (BFI) [1,2] with different spectral bandwidth definitions and Π number [3]. Evolution of wave field are simulated using fully nonlinear phase-resolving Chalikov-Sheinin (CS) numerical model [4,5]. Initial sea surface is controlled with JONSWAP shape parameters (α and γ) and random initial phases. Effect of high frequency en
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Kurmaev, Oleg, Yanxing Zeng, Sergei Fedorenko, Vladimir Ivanov, and Jianqiang Shen. "Pseudo-ternary run-length limited spectrum shaped codes." In 2013 IEEE International Symposium on Information Theory (ISIT). IEEE, 2013. http://dx.doi.org/10.1109/isit.2013.6620205.

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Makki, Behrooz, Tommy Svensson, and Michele Zorzi. "Finite block-length analysis of spectrum sharing networks." In 2015 IEEE International Conference on Signal Processing for Communications (ICC). IEEE, 2015. http://dx.doi.org/10.1109/icc.2015.7249552.

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Hong-Guang Ma, Qin-Bo Jiang, Rong Lei, Zhi-Qiang Liu, and Xiang-Yu Kong. "Determine a proper window length for singular spectrum analysis." In IET International Conference on Radar Systems (Radar 2012). Institution of Engineering and Technology, 2012. http://dx.doi.org/10.1049/cp.2012.1722.

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Xuan Huan Nguyen and Jinho Choi. "Layered Groupwise STBC: List-Based Decoding Using Flexible Length." In 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications (ISSSTA). IEEE, 2008. http://dx.doi.org/10.1109/isssta.2008.137.

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ADACHI, TOSHIAKI. "LENGTH SPECTRUM OF GEODESIC SPHERES IN RANK ONE SYMMETRIC SPACES." In Proceedings of the 5th International Workshop on Complex Structures and Vector Fields. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812810144_0009.

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Cui, Qingfeng, and Yu-Guang Kuang. "Long-focal-length hybrid optical system with secondary spectrum corrected." In Optoelectronic Science and Engineering '94: International Conference, edited by Wang Da-Heng, Anna Consortini, and James B. Breckinridge. SPIE, 1994. http://dx.doi.org/10.1117/12.182115.

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Eliassi-Rad, Tina. "Length Spectrum Theory, Non-backtracking Cycles, and Two Graph Analysis Tasks." In the 2nd Joint International Workshop. ACM Press, 2019. http://dx.doi.org/10.1145/3327964.3328490.

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Kuzuoka, Shigeaki, and Shun Watanabe. "An information-spectrum approach to weak variable-length Slepian-Wolf coding." In 2014 IEEE International Symposium on Information Theory (ISIT). IEEE, 2014. http://dx.doi.org/10.1109/isit.2014.6875321.

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Lv, Mo, Hua Zhong, Xin-hao Ge, Ting He, Kaijun Mu, and Cun-lin Zhang. "Nine wave-length THz spectrum for identification using backward wave oscillator." In International Conference on Optical Instrumentation and Technology, edited by Cunlin Zhang and Tiegen Liu. SPIE, 2009. http://dx.doi.org/10.1117/12.837753.

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Reports on the topic "Length spectrum"

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Hong, B. Bunch Length Measurement and the Beam Spectra Observation Through High Power RF Waveguide System. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/826787.

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