Results 51 to 60 of about 937,763 (287)

On Positive Recurrence of the Mn/GI/1/∞ Model

open access: yesMathematics, 2023
Positive recurrence for a single-server queueing system is established under generalized service intensity conditions, without the assumption of the existence of a service density distribution function, but with a certain integral type lower bound as a ...
Alexander Veretennikov
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Ultra Approach Groups: Characterizations, Examples, and Invariant Pseudo-Metrizability

open access: yesAxioms
The motivation of this paper is to discuss some aspects of approach groups, recall and reformulate a characterization theorem in a self-contained form, and provide various natural examples in a new setting; in so doing, we show that every bi-invariant ...
Jawaher Al-Mufarrij
doaj   +1 more source

On the Beckenbach–Gini–Lehmer Means and Means Mappings

open access: yesMathematics, 2020
Beckenbacg–Gini–Lehmer type means and mean-type mappings generated by functions of several variables, for which the arithmetic mean is invariant, are introduced.
Janusz Matkowski, Małgorzata Wróbel
doaj   +1 more source

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

open access: yesFEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain   +11 more
wiley   +1 more source

A quadratic spline maximum entropy method for the computation of invariant densities

open access: yes上海师范大学学报. 自然科学版, 2015
The numerical recovery of an invariant density of the Frobenius-Perron operator corresponding to a nonsingular transformation is depicted by using quadratic spline functions. We implement a maximum entropy method to approximate the invariant density. The
DING Jiu, UPADHYAY Tulsi
doaj   +1 more source

Global Dynamics of Some Exponential Type Systems

open access: yesDiscrete Dynamics in Nature and Society, 2020
We explore the boundedness and persistence, existence of an invariant rectangle, local dynamical properties about the unique positive fixed point, global dynamics by the discrete-time Lyapunov function, and the rate of convergence of some 2,3-type ...
A. Q. Khan   +6 more
doaj   +1 more source

On Extended Rate of Convergence Results for the Invariance Principle [PDF]

open access: yesThe Annals of Mathematical Statistics, 1969
Let {X i i = 1, 2, 3, …} be a sequence of independent and identically distributed random variables for which EX i = 0, var X i = σ2, E|X i |2 +a = b 0. C[0, 1] is the space of continuous real-valued functions on the interval [0, 1] with the sup norm topology. We define a “random broken line” as follows.
openaire   +2 more sources

Convergence to scale-invariant Poisson processes and applications in Dickman approximation [PDF]

open access: yes, 2020
We study weak convergence of a sequence of point processes to a scale-invariant simple point process. For a deterministic sequence (zn)n∈N of positive real numbers increasing to infinity as n→∞ and a sequence (Xk)k∈N of independent non-negative integer ...
Bhattacharjee, Chinmoy, Molchanov, Ilya
core   +1 more source

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