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Cryptosystem based on the elliptic curve with a high degree of resistance to damage on the encrypted images

V. M. Silva-Garcia, R. Flores-Carapia, M. D. Gonzalez-Ramirez, E. Vega-Alvarado, M.G. Villarreal-Cervantes
2020 IEEE Access  
image and the decrypted image with damage.  ...  INDEX TERMS Elliptic curve, noise in encrypted images, chaos, S-box, median filter.  ...  ACKNOWLEDGMENT The authors would like to thank the Instituto Politécnico Nacional of México (Secretaría Académica, Comisión de Operación y Fomento de Actividades Académicas COFAA, SIP, and CIDETEC), and  ... 
doi:10.1109/access.2020.3042475 fatcat:a5cr7uft3ngpzgit75vodcc65a

Strong Gravitational Lenses in a Cold Dark Matter Universe [article]

Masamune Oguri
2004 arXiv   pre-print
evidence for the cold and collisionless dark matter.  ...  We use two complementary statistics, lensed arcs and quasars, to probe the mass distributions.  ...  We make color-color cuts based on the colors expected of elliptical galaxies (Fukugita et al. 1995) : g − r > 1.5, r − i > 0.7, and i − z > 0.2 for elliptical galaxies at z 0.5.  ... 
arXiv:astro-ph/0408573v1 fatcat:xy3d74hgyvdjhaomwahopkpjoi

First Steps Toward a Method for Estimating Cosmological Parameters using Strong Lensing, X-ray and Dynamics Total Mass Estimates [article]

Michael Flemming Hansen
2017 arXiv   pre-print
In addition to the replication of the Grillo et al. (2015) models, with two cluster scale halos and 175 circular cluster member mass-density profiles, we created models using elliptical mass-density profiles  ...  for the cluster members and models where we optimize the cluster member scaling relation slopes.  ...  The Fermat Potential The Fermat potential is one of the fundamental equations of gravitational lensing, and in some ways, a more proper approach to the lensing formalism [SKW06] .  ... 
arXiv:1703.02533v3 fatcat:cuxzmuigivah5a2g3f7vtyalka

Some exactly solvable models of urn process theory

Philippe Flajolet, Philippe Dumas, Vincent Puyhaubert
2006 Discrete Mathematics & Theoretical Computer Science  
The corresponding generating functions are expressed in terms of certain Abelian integrals over curves of the Fermat type (which are also hypergeometric functions), together with their inverses.  ...  International audience We establish a fundamental isomorphism between discrete-time balanced urn processes and certain ordinary differential systems, which are nonlinear, autonomous, and of a simple monomial  ...  The authors are grateful to Philippe Chassaing, Yoshiaki Itoh, Nicolas Pouyanne, Philippe Robert, Aleksandar Sedoglavić, Brigitte Vallée, and Jacques-Arthur Weil for many stimulating discussions and valuable  ... 
doi:10.46298/dmtcs.3506 fatcat:lfx7327ncbb2lnuywwjro35kl4

On the inversion methods of strong gravitational lensing

Jaroslaw P. Rzepecki
The resulting model is able to reproduce, in detail, all the observed strong lensing features of this cluster, favors the NIS radial profile over NFW, and predicts an intriguing 5 arc sec shift between  ...  center of the mass and the X-ray emission.  ...  THEOREM.  ... 
doi:10.11588/heidok.00008121 fatcat:7dc6cehgbnghxeag4vcynk3qui

Deep Learning Gauss-Manin Connections [article]

Kathryn Heal, Avinash Kulkarni, Emre Can Sertöz
2020 arXiv   pre-print
We train neural networks that can quickly and reliably guess the complexity of the Gauss-Manin connection of a pencil of hypersurfaces.  ...  compute the periods of 96% of smooth quartic surfaces in projective 3-space whose defining equation is a sum of five monomials; from the periods of these quartic surfaces, we extract their Picard numbers and  ...  Deep learning can be used to find elliptic fibrations [HL19] , to recognize isomorphism classes of groups and rings [HK19] , and for approximating the solutions of high-dimensional partial differential  ... 
arXiv:2007.13786v1 fatcat:cv2c35dalnazvldhao4mgslacy

Inversion of Love waves from ambient noise arrays: Application in the Mygdonia basin areaΑ

Κωνσταντίνος Θεοφάνη Γκόγκας
The Love wave group velocity maps depict the main 2-D basin features and the geometry of the outcropping bedrock is well resolved.  ...  Also, the 3-D Vs model is in good correlation with independent geological, geophysical and geotechnical information.  ...  The normal distribution fit is shown with red color and a kernel smoothed fit with blue color. The mean and standard deviation of the fitted Gaussian distribution are also given with red color.  ... 
doi:10.26262/ fatcat:dud273bakjdqjbahx2jzzbktmu

Sparse Linear Inversion for Strong Gravitational Lenses Reconstruction, Component Separation from Morphological Component Analysis with Multiple Discrimination Criteria

Rémy Elie Joseph
Four years of doctoral studies rarely go smoothly and made me go through a lot of ups and downs, both personally and professionally.  ...  These are extremely stimulating times and meeting fellow students, postdocs and professors has always made me want to be part of this community to keep exchanging and learning from you.  ...  Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts.  ... 
doi:10.5075/epfl-thesis-8965 fatcat:krsxi5zdarfppcejxn4s4mtcni

Weak Gravitational Lensing by Large-Scale Structures:A Tool for Constraining Cosmology

Marc Gentile
We thank Tom Kitching for his help and especially for providing us with the true input ellipticity and FWHM catalog of the Star Challenge PSF images.  ...  Many thanks to Tom Kitching for his help and for sharing the shear analysis code. We also thank the GREAT10 Coordination Team for organizing this stimulating challenge.  ...  Quality factors per set for "gfit" (left) and "gfit den" (right). The various colors and patterns in the legend indicate the types of features simulated in the sets.  ... 
doi:10.5075/epfl-thesis-5732 fatcat:sqy3ossf55bp7kuntsyuuvk3le

Gravitational lensing constraints on cosmic structures

Marco Miranda
the virial theorem.  ...  The dashed histogram shows the observational data.  ...  I also thank him for carefully reading my manuscripts, my thesis and for kindly teaching me hystorical and scientific features of the physics world and of all its inhabitants.  ... 
doi:10.5167/uzh-163692 fatcat:ssn2vwcw2fagfll4wguqlhbsk4

Online) International Journal of Network Security is published both in traditional paper form (ISSN 1816-353X) and in Internet

Min-Shiang Hwang, Shu-Fen Chiou, Chia-Chun Wu, Cheng-Yi Yang, Ajith Abraham, Korea, Wael Adi, Iqbal Sheikh, Ahamed, Vijay Atluri, Mauro Barni, Andrew Blyth (+36 others)
2016 unpublished
Acknowledgments This research was supported in part by the National Nature Science Foundation of China (grant number: 61202228) and the College Natural Science Key Project of Anhui Province of China (grant  ...  and face dimensions in addition to the dress color and face color.  ...  From the Fermat theorem, since gcd(α, p) = 1, we have α p−1 mod p = 1. Hence, for any nonnegative integer c, we have g cN mod p = (α (p−1)/N ) cN mod p == (α p−1 ) c mod p = 1.  ... 

Online) International Journal of Network Security is published both in traditional paper form (ISSN 1816-353X) and in Internet

Min-Shiang Hwang, Shu-Fen Chiou, Chia-Chun Wu, Cheng-Yi Yang, Ajith Abraham, Korea, Wael Adi, Iqbal Sheikh, Ahamed, Vijay Atluri, Mauro Barni, Andrew Blyth (+91 others)
2017 International Journal of Network Security   unpublished
Accordingly, we propose an enhanced scheme to remedy these security weaknesses, and prove that our scheme is more secure and efficient for network application with several positive properties.  ...  s scheme, such as forward secrecy and the wrong password login problem, and proposed an enhanced user password authentication scheme based on smart card. However, we found weaknesses in their scheme.  ...  ), the 211 Project of Anhui University (Nos 33190187 and 17110099), and the Educational Commission of Anhui Province, China (KJ2015A326).  ... 

German Scientists and the Atom Bomb

William G. Schlecht
1959 Science  
Newton “‘to discuss the validity of Kepler’s theory of elliptical orbits”; that “Galileo’s system” became Newton’s first and second laws!  ...  Here the color may be compared with color standards or 20 FEBRUARY 1959 PORTABLE LABORATORY In recent years, semi-micro techniques have gained increased popularity, par- ticularly in the analytical and  ... 
doi:10.1126/science.129.3347.438-c fatcat:lujmi3nn4rdxvfndmaei72o7oe

Singularimetry: phase measurement using vortices and caustics

Samuel Anthony Eastwood
This thesis investigates singularimetry in both optical and matter wave fields.  ...  Using theoretical ideas from singular wave optics, a proportionality between the transverse displacement of the vortices and the phase shift in the object wave was derived and experimentally tested.  ...  The Bloch sphere image is a 2D histogram of φ and θ, each of which are calculated for every (x, y) point of the spin field.  ... 
doi:10.4225/03/58b6546f227d0 fatcat:vusnxb5b7fbwho7slekk2o5khm

Design of large polyphase filters in the Quadratic Residue Number System

Gian Carlo Cardarilli, Alberto Nannarelli, Yann Oster, Massimo Petricca, Marco Re
2010 2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers  
an intensity histogram to sense objects of interest as a new additional fusion rule.  ...  Many algorithms have been presented to correct bleed-through using grayscale and/or color images.  ... 
doi:10.1109/acssc.2010.5757589 fatcat:ccxnu5owr5fyrcjcqukumerueq
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