Results 111 to 120 of about 632,681 (338)
On Weighted Polynomial Approximation With Gaps [PDF]
Nagoya Mathematical Journal, 2005 Let α be a nonnegative continuous function on ℝ. In this paper, the author obtains a necessary and sufficient condition for polynomials with gaps to be dense in Cα, where Cα is the weighted Banach space of complex continuous functions ƒ on ℝ with ƒ(t) exp(−α(t)) vanishing at infinity.
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FEBS 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
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The Approximation Characteristics of Weighted Band-Limited Function Space
MathematicsThis article primarily investigates the width problem within weighted band-limited function space in a uniform setting. Through an analysis of the properties of s-numbers, we establish a connection between the widths of weighted band-limited function ...
Yue Li +3 more
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FEBS Open Bio, EarlyView.This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill +4 more
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Harmonic vibration of cusped plates in the N-th approximation of Vekua’s hierarchical models
Archives of Mechanics, 2013 In this paper elastic cusped symmetric prismatic shells (i.e., plates of variable thickness with cusped edges) in the N-th approximation of Vekua’s hierarchical models are considered.
N. Chinchaladze
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Screening and epitope characterization of Nidogen‐2‐specific nanobodies
FEBS Open Bio, EarlyView.Camel immunization and phage display were employed to generate high‐affinity VHH nanobodies against Nidogen‐2. After library construction, biopanning, ELISA screening, sequencing, and recombinant expression, selected nanobodies were purified and characterized, leading to the preliminary exploration of a nanobody‐based sandwich ELISA for specific ...
Jianchuan Wen +9 more
wiley +1 more source
Low-rank matrix approximation with weights or missing data is NP-hard [PDF]
Weighted low-rank approximation (WLRA), a dimensionality reduction technique for data analysis, has been successfully used in several applications, such as in collaborative filtering to design recommender systems or in computer vision to recover ...
GILLIS, Nicolas, GLINEUR, François
core
A generalized problem in weighted approximation [PDF]
Transactions of the American Mathematical Society, 1924 shall be a minlimum, where f(x) is a given continuous ftinction, and e (x) is a given bounded function with a positive lower bound. The purpose of the present paper is to discuss the somewhat less simple problem of convergence that arises if the greatest lower bound of e (x) is zero.
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Rapid screening of staphylokinase protein variants using an unpurified cell‐free expression system
FEBS Open Bio, EarlyView.An unpurified cell‐free protein synthesis (CFPS) platform enables rapid functional screening of staphylokinase variants. Direct plasminogen‐activation assays performed in microplate format provide real‐time activity readouts, allowing rapid identification and ranking of variants with improved or reduced fibrinolytic activity without protein ...
Maria Tomková +3 more
wiley +1 more source
Weighted simultaneous Chebyshev approximation
Journal of Approximation Theory, 1981 AbstractIn this paper we discuss the problem of weighted simultaneous Chebyshev approximation to functions f1,…fm ϵ C(X) (1 ⩽ m ⩽ ∞), i.e., we wish to minimize the expression ∥{∑mj = 1 λj¦fj − q¦p}1p∥∞, where λj > 0, ∑mj = 1 λj = 1, p ⩾ 1. For this problem we establish the main theorems of the Chebyshev theory, which include the theorems of existence ...
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