Results 51 to 60 of about 588,405 (243)

Multi-State System Reliability Evaluation and Component Allocation Optimization Under Multi-Level Performance Sharing

open access: yesIEEE Access, 2021
With the development of science and technology, the structure of engineering system has become increasingly large and complex. In order to ensure the safety and stability of the system in operation, the reliability evaluation of complex system has become
Shuxuan Huang   +4 more
doaj   +1 more source

Updown categories: Generating functions and universal covers

open access: yesDiscrete Mathematics, 2016
arXiv admin note: substantial text overlap with arXiv:math ...
openaire   +3 more sources

Generation of near-optimal universal Boolean functions

open access: yesJournal of Computer and System Sciences, 1970
AbstractA Boolean function U(z1, z2,…,zm) is universal for given n≥1 if it realizes all Boolean functions f(x1,…,xn) by substituting for each zj a variable of the set {0, 1, x1,…,xn, 1,…,n}). An easily applied method based on linear algebra is developed for finding universal Boolean functions having a small number m of arguments.
Preparata, Franco P., Muller, David E.
openaire   +2 more sources

Availability‐aware virtual network function placement based on multidimensional universal generating functions

open access: yesInternational Journal of Network Management, 2023
AbstractNetwork function virtualization (NFV) implements network functions as software, which enables flexible, resource‐efficient, and rapid provision of network services. In NFV, network services are realized by the service function chain (SFC), which is a chain of virtual network functions (VNFs) linked in the proper order.
Kengo Arakawa, Eiji Oki
openaire   +1 more source

Algebraic genericity of frequently universal harmonic functions on trees [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2020
We show that the set of frequently universal harmonic functions on a tree T contains a vector space except 0 which is dense in the space of harmonic functions on T seen as subset of C^T . In order to prove this we replace the complex plane C by any separable Frechet space E and we repeat all the theory.
N. Biehler   +2 more
openaire   +3 more sources

Symplectic Schemes for Birkhoffian System

open access: yes, 2003
A universal symplectic structure for a Newtonian system including nonconservative cases can be constructed in the framework of Birkhoffian generalization of Hamiltonian mechanics.
Qin, Mengzhao, Su, Hongling
core   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS 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

Reconstruction of universal Drinfeld twists from representations

open access: yes, 2004
Universal Drinfeld twists are inner automorphisms which relate the coproduct of a quantum enveloping algebra to the coproduct of the undeformed enveloping algebra.
Christian Blohmann   +5 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Availability Analysis and Optimal Design of Multistate Weighted ${k}$ -Out-of- ${n}$ Systems With Component Performance Requirements

open access: yesIEEE Access, 2018
As one of the most typical multistate systems, weighted k-out-of-n system has been extensively studied in recent years. This paper presents a new kind of multistate weighted k-out-of-n system, which simultaneously considers performance requirements of ...
Zhiwei Chen   +3 more
doaj   +1 more source

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