Results 31 to 40 of about 109,360 (279)

Comparing 511 keV Attenuation Maps Obtained from Different Energy Mapping Methods for CT Based Attenuation Correction of PET Data [PDF]

Iranian Journal of Medical Physics, 2008
Introduction:  The  advent  of  dual-modality  PET/CT  scanners  has  revolutionized  clinical  oncology  by  improving lesion localization and facilitating treatment planning for radiotherapy.
Maryam Shirmohammad, Mohammad Reza Ay, Saeed Sarkar, Arman Rahmim   +3 more
doaj   +1 more source

A Novel Identity-Based Privacy-Preserving Anonymous Authentication Scheme for Vehicle-to-Vehicle Communication

Elektronika ir Elektrotechnika, 2023
This paper proposes a novel bilinear pairing-free identity-based privacy-preserving anonymous authentication scheme for vehicle-to-vehicle (V2V) communication, called “NIBPA”.
Yasin Genc, Cagatay Korkuc, Nilay Aytas, Erkan Afacan, Murat H. Sazli, Erdem Yazgan   +5 more
doaj   +1 more source

Self-Bilinear Map from One Way Encoding System and i𝒪

Information
A bilinear map whose domain and target sets are identical is called a self-bilinear map. Original self-bilinear maps are defined over cyclic groups. Since the map itself reveals information about the underlying cyclic group, the Decisional Diffie–Hellman
Huang Zhang, Ting Huang, Fangguo Zhang, Baodian Wei, Yusong Du   +4 more
doaj   +1 more source

Forward-Secure Linkable Ring Signatures from Bilinear Maps

Cryptography, 2018
We present the first linkable ring signature scheme with both unconditional anonymity and forward-secure key update: a powerful tool which has direct applications in elegantly addressing a number of simultaneous constraints in remote electronic voting ...
Xavier Boyen, Thomas Haines
doaj   +1 more source

Hamiltonian and Linear-Space Structure for Damped Oscillators: I. General Theory

, 2004
The phase space of $N$ damped linear oscillators is endowed with a bilinear map under which the evolution operator is symmetric. This analog of self-adjointness allows properties familiar from conservative systems to be recovered, e.g., eigenvectors are "
Alec Maassen van den Brink, Caldeira A O, Chee S C, Chee S C, Ching E S C, Fetter A L, Feynman R P, Ho K C, Ilyin V A, K Young, Kubo R, Lang R, Leung P T, Leung P T, Maassen van den Brink A, Maassen van den Brink A Young K Yung M H, Riseborough P S, S C Chee, Siegman A E, Weiss U, Yu L H, Zeldovich Ya B, Zeldovich Ya B   +22 more
core   +1 more source

When is multiplication in a Banach algebra open? [PDF]

, 2017
We develop the theory of Banach algebras whose multiplication (regarded as a bilinear map) is open. We demonstrate that such algebras must have topological stable rank 1, however the latter condition is strictly weaker and implies only that products of ...
Draga, Szymon, Kania, Tomasz
core   +1 more source

On the Properties of the Arens Regularity of Bounded Bilinear Mappings

پژوهش‌های ریاضی, 2020
Introduction       Let ,  and be Banach spaces and  be a bilinear mapping. In 1951 Arens found two extension for  as  and  from  into .  The mapping  is the unique extension of  such that  from  into  is  continuous for every , but the mapping  is not in
Abotalb Shikh Ali, Kazem Haghnejad azar, Ali Abadian   +2 more
doaj  

Bilinear characterizations of companion matrices

Special Matrices, 2014
Companion matrices of the second type are characterized by properties that involve bilinear maps.
Lin Minghua, Wimmer Harald K.
doaj   +1 more source

Charged Free Fermions, Vertex Operators and Classical Theory of Conjugate Nets

, 1998
We show that the quantum field theoretical formulation of the $\tau$-function theory has a geometrical interpretation within the classical transformation theory of conjugate nets.
Adam Doliwa, Bianchi L, Bobenko A, Darboux G, Date E, Date E, Doliwa A, Eisenhart L P, Elena Medina, Ferapontov E V, Fuchs R, Garnier R, Hirota R, Hirota R, Jimbo M, Kac V G, Kac V G, Konopelchenko B G, Konopelchenko B G, Levi D, Luis Martínez Alonso, Maffei A, Manuel Mañas, Matveev V B, Miwa T, Oevel W, Paolo Maria Santini, Sato M, Sato M, Sato M, Sauer R, Schlessinger L, Segal G, Tsarev S P, van de Leur J, Witten E, Witten E   +36 more
core   +1 more source

CNN-Based Copy-Move Forgery Detection Using Rotation-Invariant Wavelet Feature

IEEE Access, 2022
This paper introduces a machine learning based copy-move forgery (CMF) localization method. The basic convolutional neural network cannot be applied to CMF detection because CMF frequently involves rotation transformation.
Sang In Lee, Jun Young Park, Il Kyu Eom
doaj   +1 more source