Results 61 to 70 of about 525,025 (272)
$p$-adic Dual Shearlet Frames [PDF]
Sahand Communications in Mathematical Analysis, 2019 We introduced the continuous and discrete $p$-adic shearlet systems. We restrict ourselves to a brief description of the $p$-adic theory and shearlets in real case.
Mahdieh Fatemidokht +1 more
doaj +1 more source
Data-Driven Tight Frame for Cryo-EM Image Denoising and Conformational Classification
, 2018 The cryo-electron microscope (cryo-EM) is increasingly popular these years. It helps to uncover the biological structures and functions of macromolecules. In this paper, we address image denoising problem in cryo-EM. Denoising the cryo-EM images can help
Cai, Jian-Feng +6 more
core +1 more source
Constructing tight fusion frames
Applied and Computational Harmonic Analysis, 2011 A tight fusion frame is a sequence of orthogonal projection operators that sum to a scalar multiple of the identity operator. The authors resolve the question of existence of such frames in the special case where the underlying space is finite-dimensional and the fusion frame's subspaces have equal dimension.
Casazza, Peter G. +4 more
openaire +3 more sources
Tight frames, Hadamard matrices and Zauner’s conjecture [PDF]
Journal of Physics A: Mathematical and Theoretical, 2019 20 pages, no figures.
Marcus Appleby +3 more
openaire +3 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Improved RIP Conditions for Compressed Sensing with Coherent Tight Frames
Discrete Dynamics in Nature and Society, 2017 This paper establishes new sufficient conditions on the restricted isometry property (RIP) for compressed sensing with coherent tight frames.
Yao Wang, Jianjun Wang
doaj +1 more source
Construction of Periodic Wavelet Frames Generated by the Walsh Polynomials
Mathematics, 2015 An explicit method for the construction of a tight wavelet frame generated by the Walsh polynomials with the help of extension principles was presented by Shah (Shah, 2013).
Sunita Goyal, Firdous A. Shah
doaj +1 more source
Steiner equiangular tight frames
Linear Algebra and its Applications, 2012 We provide a new method for constructing equiangular tight frames (ETFs). The construction is valid in both the real and complex settings, and shows that many of the few previously-known examples of ETFs are but the first representatives of infinite families of such frames. It provides great freedom in terms of the frame's size and redundancy.
Fickus, Matthew +2 more
openaire +3 more sources
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
Кубанский научный медицинский вестник, 2017 Aim. To explore the possibility for a temporary compression of the perforation hole by endobiliary stenting in close proximity of papillotomy anastomosis. Materials and methods.
V. V. YURCHENKO, R. B. OSUMBEKOV
doaj +1 more source