نتایج جستجو برای: differential uniformity du

تعداد نتایج: 407024  

Journal: :IEEE Transactions on Information Theory 2021

In a prior paper (Ellingsen et al. , 2020), two of us, along with P. Ellingsen, Felke, and A. Tkachenko, defined new (output) multiplicative differential the corresponding $c$ -di...

2013
Ibrahim E. Saad

Intrinsic flood field uniformity is a fundamental quality control test that is considered as prerequisite for performing clinical routine exams using the gamma camera. Every gamma camera vendor provides recommended geometrical and physical parameters that should be followed while performing this test. Conventional methods using NEMA recommended parameters also can be used as well. The aim of th...

Journal: :Acta horticulturae et regiotecturae 2021

Abstract Nowadays, the development of irrigation is increasingly recognized as a necessary factor in agriculture, primarily because global warming. Depending on field conditions, most commonly used method sprinkler irrigation. The spray uniformity sprinklers installed equipment can be characterized by Christiansen-uniformity coefficient (CUc%) and distribution (DU%). Our investigations were car...

Journal: :iranian journal of nuclear medicine 0
afshin akbarzadeh research center for molecular and cellular imaging, tehran university of medical sciences, tehran, iran valiallah saba radiation research center, faculty of paramedicine, aja university of medical sciences, tehran, iran mohammad reza ay department of medical physics and biomedical engineering, tehran university of medical sciences, tehran, iran

introduction:surgeosight is a dedicated intra-operative hand-held gamma camera designed and manufactured by our team to be used for lymphoscintigraphy. although conventional gamma cameras are widely used, they lack the capability of the sentinel lymph node (sln) imaging in the operation room. like conventional gamma cameras it is necessary to calibrate surgeosight for linearity distortion, ener...

2013
Claude Carlet Deng Tang Xiaohu Tang Qunying Liao

Block ciphers use Substitution boxes (S-boxes) to create confusion into the cryptosystems. For resisting the known attacks on these cryptosystems, the following criteria for functions are mandatory: low differential uniformity, high nonlinearity and not low algebraic degree. Bijectivity is also necessary if the cipher is a Substitution-Permutation Network, and balancedness makes a Feistel ciphe...

Journal: :Computers & Mathematics with Applications 2009
Bashir Ahmad Juan J. Nieto

This paper studies a coupled system of nonlinear fractional differential equation with three-point boundary conditions. Applying the Schauder fixed point theorem, an existence result is proved for the following system Du (t) = f (t, v (t) , Dv (t)) , t ∈ (0, 1) , Dv (t) = g (t, u (t) , Du (t)) , t ∈ (0, 1) , u (0) = 0, Du (1) = δDu (η) , v (0) = 0, Dv (1) = δDv (η) , where α, β, m, n, η, δ, θ s...

2008
F. A. Salah

Some scintillation camera manufactures adhere to standard code of performance specification established by National Electric Manufactures Association (NEMA). Items such as differential and integral uniformity, spatial resolution energy resolution, etc. are all calculated with reproducible methodology that allows the user reliable technique for creation of these standards to avoid any lack of cl...

2014
Sylvie Nguyen-Minh Christoph Bührer Christoph Hübner Angela M. Kaindl

•47,XYY syndrome is a frequent sex chromosome aneuploidy.•Overview of characteristic symptoms of 47,XXY•First report of 47,XYY and microcephaly in a preterm child•Brief differential diagnosis of microcephaly.

2009
YVES AUBRY

We give a geometric characterization of vectorial Boolean functions with differential uniformity ≤ 4. This enables us to give a necessary condition on the degree of the base field for a function of degree 2r − 1 to be differentially 4-uniform.

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