Bibliografie tematiche / Signature inversion

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Letteratura scientifica selezionata sul tema "Signature inversion"

Autore: Grafiati

Pubblicato: 21 dicembre 2024

Ultima modifica: 31 luglio 2025

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Articoli di riviste sul tema "Signature inversion"

Van Den Broeke, Matthew S. "Bioscatter Characteristics Related to Inversion Variability in Atlantic Basin Tropical Cyclones." Earth Interactions 26, no. 1 (2022): 28–38. http://dx.doi.org/10.1175/ei-d-21-0010.1.

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Abstract Tropical cyclones (TCs) routinely transport organisms at their centers of circulation. The TC center of circulation is also often marked by an inversion, and the height of the inversion base may change as the TC intensifies or weakens. In this study, a dataset of 49 dropsonde-measured inversions in 20 separate Atlantic Ocean TCs is compared with spatiotemporally collocated polarimetric radar measurements of bioscatter. Bioscatter signature maximum altitude is found to be a function of temperature lapse rate across the inversion base (r = 0.473), and higher inversion bases were general

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Zhang, Jian Hong, Hua Chen, and Yi Xian Yang. "Efficient Blind Signature Scheme Based on Modified Generalized Bilinear Inversion." Key Engineering Materials 439-440 (June 2010): 1265–70. http://dx.doi.org/10.4028/www.scientific.net/kem.439-440.1265.

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As a special anonymous signature, the blindness of blind signatures makes it play an important role in electronic commerce. In this paper we first propose a novel blind signature scheme from bilinear pairings. Furthermore, we also give a formal proof of security for the proposed schemes in the random oracle model. And we show that the scheme satisfies the two properties of blind signature: blindness and unforgeability. As for efficiency of the scheme, the size of our blind signature is 320 bits, and no pairings operator are required in the blind signing phas and two pairing operators are neede

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Vallée, Marc A., William A. Morris, Stéphane Perrouty, et al. "Geophysical inversion contributions to mineral exploration: lessons from the Footprints project." Canadian Journal of Earth Sciences 56, no. 5 (2019): 525–43. http://dx.doi.org/10.1139/cjes-2019-0009.

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Magnetic and gravity inversions are used to create 2D or 3D models of the magnetic susceptibility and density, respectively, using potential field data. Unconstrained inversions generate an output based on mathematical constraints imposed by the inversion algorithm. Constrained inversions integrate lithological, structural, and petrophysical information in the inversion process to produce more geologically meaningful results. This study analyses the validity of this assertion in the context of the NSERC-CMIC Mineral Exploration Footprints project. Unconstrained and constrained geophysical inve

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Zhang, Jian Hong, Min Xu, and Xiu Na Su. "An Efficient and Provably Secure Proxy Signature Scheme." Advanced Materials Research 211-212 (February 2011): 876–80. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.876.

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As a concept of delegating signing rights for digital signatures, proxy signature is a well studied subject in cryptography. Proxy signature is an important delegation technique. It plays an important role in auto-office system. In this paper, we give a secure and efficient proxy signature scheme. The security of the scheme is base on the fixed inversion problem of bilinear map. It has the following advantages: simple construction, short size and low computation.

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Landrø, M., and R. Sollie. "Source signature determination by inversion." GEOPHYSICS 57, no. 12 (1992): 1633–40. http://dx.doi.org/10.1190/1.1443230.

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A new method for estimating the pressure wavefield generated by a marine air‐gun array is presented. It is assumed that data is acquired at a ministreamer located below the source array. Effective source signatures for each air gun are estimated by an inversion algorithm. The forward modeling scheme used in the inversion algorithm is based upon a physical modeling of the air bubble generated by each air gun. This means that typical inversion parameters are: gun depths, empirical damping coefficients, and reflection coefficient of the sea surface. Variations in streamer depth are also taken int

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Onishi, N., and N. Tajima. "An Interpretation of Signature Inversion." Progress of Theoretical Physics 80, no. 1 (1988): 130–37. http://dx.doi.org/10.1143/ptp.80.130.

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Zhou, S.-G., Y.-Z. Liu, Y.-J. Ma, and C.-X. Yang. "Low-spin signature inversion in." Journal of Physics G: Nuclear and Particle Physics 22, no. 3 (1996): 415–20. http://dx.doi.org/10.1088/0954-3899/22/3/014.

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Xu, F. R., W. Satuła, and R. Wyss. "Quadrupole pairing interaction and signature inversion." Nuclear Physics A 669, no. 1-2 (2000): 119–34. http://dx.doi.org/10.1016/s0375-9474(99)00817-9.

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Lyons, Terry J., and Weijun Xu. "Hyperbolic development and inversion of signature." Journal of Functional Analysis 272, no. 7 (2017): 2933–55. http://dx.doi.org/10.1016/j.jfa.2016.12.024.

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Aghamiry, H. S., F. W. Mamfoumbi-Ozoumet, A. Gholami, and S. Operto. "Efficient extended-search space full-waveform inversion with unknown source signatures." Geophysical Journal International 227, no. 1 (2021): 257–74. http://dx.doi.org/10.1093/gji/ggab202.

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SUMMARY Full waveform inversion (FWI) requires an accurate estimation of source signatures. Due to the coupling between the source signatures and the subsurface model, small errors in the former can translate into large errors in the latter. When direct methods are used to solve the forward problem, classical frequency-domain FWI efficiently processes multiple sources for source signature and wavefield estimations once a single lower–upper (LU) decomposition of the wave-equation operator has been performed. However, this efficient FWI formulation is based on the exact solution of the wave equa

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Più fonti

Tesi sul tema "Signature inversion"

Xu, Weijun. "Inverting the signature of a path." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:954ff1e3-9162-456a-91a3-39734854cde2.

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This thesis consists of two parts. The first part (Chapters 2-4) focuses on the problem of inverting the signature of a path of bounded variation, and we present three results here. First, we give an explicit inversion formula for any axis path in terms of its signature. Second, we show that for relatively smooth paths, the derivative at the end point can be approximated arbitrarily closely by its signature sequence, and we provide explicit error estimates. As an application, we give an effective inversion procedure for piecewise linear paths. Finally, we prove a uniform estimate for the signa

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Jodidar, Praveen Muralidhar. "Study of collectivity in neutron-deficient A≈120 nuclei close to the proton drip line." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP124.

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Cette thèse présente des études spectroscopiques de noyaux très déficients en neutrons dans la région de masse A ≈ 120. Nous avons effectué la réaction de fusion-évaporation ⁶⁴Zn + ⁵⁸Ni et utilisé l'installation Jurogam 3 + MARA située au laboratoire JYFL en Finlande. Plus de 15 noyaux ont été produits dans cette réaction. Notre étude s'est principalement concentrée sur trois isotopes : ¹²⁰La, ¹¹⁷Cs, et ¹¹⁴I. Nous avons identifié pour la première fois des états excités dans ¹²⁰La, ce qui en fait l'isotope de lanthane le plus léger connu par spectroscopie. Les états observés sont organisés en u

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Chantler, Hannah Jane. "High-spin gamma-ray spectroscopy of doubly odd 124La; signature inversion in Ï€h11/2 x vh11/2 bands." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396474.

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Shirinda, Obed. "Signature splitting and inversion in the 186-194 Au Nuclei predicted by the total routhian surface (TRS) and cranked shell model (CSM) calculations." Thesis, University of the Western Cape, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6814_1255091175.

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<p>The nearly oblate deformed Au nuclei show rotational bands built on multi quasiparticle excitations [Bou89, Bou92, Gue03, Gue01, Ven92]. Several of these bands are built on rotationally aligned high-j proton and neutron excitations. In many cases bands consisting of two or three signature partner E2 sequences are observed. For some fo these bands signature inversion is found and this feature gives a great challenge to the theoretical models. In this study the researcher performed TRS and CSM calculations for all high-j rotational bands in the p186-194s Au nuclei aiming to predict the signat

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Vandevoorde, Loïc. "Contribution à la caractérisation des revêtements par inversion des courbes V (z)." Valenciennes, 2006. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/5ee970e0-5094-4d66-96f7-0a013a8e5e24.

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L'objectif de cette étude est de caractériser à l'aide de la méthode V(z) des revêtements en bronze d'aluminium Cu9. 5Al1Fe déposés à la torche plasma sur un substrat en acier bas carbone. La courbe V(z) est obtenue à partir du relevé de la tension électrique aux bornes d'un transducteur focalisé en fonction du déplacement (z), perpendiculairement à la surface de l'échantillon analysé. Le traitement d'inversion de la courbe V(z) permet d'obtenir le coefficient de réflexion R(Ө,f) de l'échantillon. La position des minima de R(Ө,f) peut être relié aux constantes élastiques ou à l'adhérence du re

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Calou, Paul. "Mesure et compensation de bâtiments navals à l’aide de capteurs magnétiques trois composantes." Thesis, Strasbourg, 2019. http://www.theses.fr/2019STRAH018.

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Cette thèse s’établit à la frontière du géomagnétisme et du magnétisme du navire, deux disciplines proches mais dont les habitudes diffèrent. Dans un premier temps, on présente les spécificités de chaque domaine en introduisant les principales notions clés ainsi que le type de mesure mis en oeuvre pour chaque domaine et les géométries d’acquisition. On vérifie également la validité des approximations utilisées dans les cas de figure rencontrés. Dans un deuxième temps (chapitre 2 et 3) on détaille le lien mathématique possible entre l’anomalie scalaire utilisée en géophysique et les trois compo

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Capitoli di libri sul tema "Signature inversion"

Bellare, Mihir, Chanathip Namprempre, David Pointcheval, and Michael Semanko. "The Power of RSA Inversion Oracles and the Security of Chaum’s RSA-Based Blind Signature Scheme." In Financial Cryptography. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-46088-8_25.

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Lenstra, Arjen K. "Generating standard DSA signatures without long inversion." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/bfb0034835.

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Chen, Yangjun, and Yong Shi. "Signature Files and Signature File Construction." In Encyclopedia of Database Technologies and Applications. IGI Global, 2005. http://dx.doi.org/10.4018/978-1-59140-560-3.ch105.

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An important question in information retrieval is how to create a database index which can be searched efficiently for the data one seeks. Today, one or more of the following four techniques have been frequently used: full text searching, B-trees, inversion, and the signature file. Full text searching imposes no space overhead but requires long response time. In contrast, B-trees, inversion, and the signature file work quickl, but need a large intermediary representation structure (index), which provides direct links to relevant data. In this paper, we concentrate on the techniques of signatur

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Chen, Yangjun. "An Overview on Signature File Techniques." In Handbook of Research on Innovations in Database Technologies and Applications. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-242-8.ch069.

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An important question in information retrieval is how to create a database index which can be searched efficiently for the data one seeks. Today, one or more of the following four techniques have been frequently used: full text searching, B-trees, inversion and the signature file. Full text searching imposes no space overhead, but requires long response time. In contrast, B-trees, inversion and the signature file work quickly, but need a large intermediary representation structure (index), which provides direct links to relevant data. In this paper, we concentrate on the techniques of signatur

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Pratt, George. "Second Level Dominants." In The Dynamics of Harmony Principles & Practice. Oxford University PressOxford, 1996. http://dx.doi.org/10.1093/oso/9780198790204.003.0004.

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Abstract In Chapter 2 we experienced the tension of V(7) which is released by its resolution to I. Similarly the supertonic generates tension which is resolved by V. The supertonic is the ‘dominant of the dominant’, is V of V, or a second-level dominant. The apparent constraints of a key signature make the supertonic appear, at first sight, to be a minor chord in major keys and diminished in minor keys. In practice However, the chord can be almost as readily major (indicated by II) as minor (ii) while the pinched sound of the diminished form is relieved by using it in first inversion, Ex. 4a.

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Atti di convegni sul tema "Signature inversion"

Calef, Brandoch, John Africano, Brian Birge, Doyle Hall, and Paul Kervin. "Photometric signature inversion." In SPIE Optics + Photonics, edited by Victor L. Gamiz, Paul S. Idell, and Marija S. Strojnik. SPIE, 2006. http://dx.doi.org/10.1117/12.683015.

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Landrø, M., and R. Sollie. "Source signature determination by inversion." In SEG Technical Program Expanded Abstracts 1992. Society of Exploration Geophysicists, 1992. http://dx.doi.org/10.1190/1.1822199.

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Cunha Filho, C. A. "A Pragmatic Approach to Seismic Signature Inversion." In Second EAGE/SBGf Workshop 2014. EAGE Publications BV, 2014. http://dx.doi.org/10.3997/2214-4609.20147400.

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Ryzhikov, Gennady A., and Marina S. Biryulina. "Removal of intrabed multiples via source‐signature invariant inversion." In SEG Technical Program Expanded Abstracts 1999. Society of Exploration Geophysicists, 1999. http://dx.doi.org/10.1190/1.1820685.

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Aaker, Ole Edvard, Espen Birger Raknes, and Ørjan Pedersen. "Newton-type inversion for source signature and medium parameters." In First International Meeting for Applied Geoscience & Energy. Society of Exploration Geophysicists, 2021. http://dx.doi.org/10.1190/segam2021-3581908.1.

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Akçelik, Volkan, Huseyin Denli, Alex Kanevsky, Kinesh K. Patel, Laurent White, and Martin‐Daniel Lacasse. "Multiparameter material model and source signature full waveform inversion." In SEG Technical Program Expanded Abstracts 2011. Society of Exploration Geophysicists, 2011. http://dx.doi.org/10.1190/1.3627692.

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Alexa, P. "The microscopic analysis of signature inversion in odd-odd nuclei." In The tenth international symposium on capture gamma-ray spectroscopyand related topics. AIP, 2000. http://dx.doi.org/10.1063/1.1361432.

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Li, Guofa, Xiaolong Yin*, Zi Liu, and Mingqiang Cao. "Directional deconvolution of air gun array signature via nonstationary inversion scheme." In SEG Technical Program Expanded Abstracts 2015. Society of Exploration Geophysicists, 2015. http://dx.doi.org/10.1190/segam2015-5836115.1.

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Ziolkowski, A. "Robust Inversion of Land Seismic Dynamite Data for Source Signature Determination." In 82nd EAGE Annual Conference & Exhibition. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202012218.

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Yuhu, Zhang, Zhou Xiaohong, Zhao Qingzhong, et al. "Search for Signature Inversion of Yrast Band in Odd-Odd 162Lu Nucleus." In Proceedings of the Second International Symposium. WORLD SCIENTIFIC, 1996. http://dx.doi.org/10.1142/9789814447195_0036.

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