Results 91 to 100 of about 191,051 (296)

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Circumventing d-to-1 for Approximation Resistance of Satisfiable Predicates Strictly Containing Parity of Width Four [PDF]

open access: yes, 2012
Håstad established that any predicate P ⊆ {0,1} m containing parity of width at least three is approximation resistant for almost satisfiable instances.
Wenner, Cenny,, Cenny Wenner
core   +1 more source

Degree of Approximation on a Jordan Curve [PDF]

open access: yesProceedings of the National Academy of Sciences, 1952
Walsh, J. L., Elliott, H. Margaret
openaire   +2 more sources

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar   +4 more
wiley   +1 more source

On the Complexity of Optimization over the Standard Simplex [PDF]

open access: yes
We review complexity results for minimizing polynomials over the standard simplex and unit hypercube.In addition, we show that there exists a polynomial time approximation scheme (PTAS) for minimizing Lipschitz continuous functions and functions with ...
Klerk, E. de   +2 more
core   +1 more source

The error-bounded descriptional complexity of approximation networks [PDF]

open access: yes, 2010
It is well known that artificial neural nets can be used as approximators of any continuous functions to any desired degree and therefore be used e.g. in high - speed, real-time process control.
Brause, Rüdiger W.
core  

Approximating Upper Degree-Constrained Partial Orientations [PDF]

open access: yes, 2014
In the Upper Degree-Constrained Partial Orientation (UDPO) problem we are given an undirected graph G=(V,E), together with two degree constraint functions d^-,d^+:V -> N. The goal is to orient as many edges as possible, in such a way that for each vertex
Cygan, Marek   +3 more
core   +1 more source

Numerical integration by the matrix method of boundary value problems for linear inhomogeneous ordinary differential equations of the third order with variable coefficients

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018
The use of the Taylor polynomial of the second degree when approximating the derivatives by finite differences leads to the second order of approximation of the traditional method of nets in the numerical integration of second-order ordinary differential
Vladimir N Maklakov, Yanina G Stelmakh
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Sur la suite des opérateurs Bernstein composés (On the sequence of composite Bernstein operators)

open access: yesJournal of Numerical Analysis and Approximation Theory, 2013
We consider a sequence of composite Bernstein operators and the quadrature formulae associated with them. Upper bounds for the approximation error of continuous functions and for the approximation of integrals of continuous functions are given.
H. Gonska, I. Raşa
doaj   +2 more sources

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