Results 81 to 90 of about 235,552 (326)

Multivariate Differences, Polynomials, and Splines

Journal of Approximation Theory, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Alternatives to polynomial trend-corrected differences-in-differences models [PDF]

Applied Economics Letters, 2018
A common problem with differences-in-differences (DD) estimates is the failure of the parallel-trend assumption.
openaire   +4 more sources

Recycling of Thermoplastics with Machine Learning: A Review

Advanced Functional Materials, EarlyView.
This review shows how machine learning is revolutionizing mechanical, chemical, and biological pathways, overcoming traditional challenges and optimizing sorting, efficiency, and quality. It provides a detailed analysis of effective feature engineering strategies and establishes a forward‐looking research agenda for a truly circular thermoplastic ...
Rodrigo Q. Albuquerque, Florian Stephan, Annalena Pongratz, Christian Brütting, Katharina Krause, Holger Ruckdäschel   +5 more
wiley   +1 more source

Defect correction from a galerkin viewpoint [PDF]

, 1985
We consider the numerical solution of systems of nonlinear two point boundary value problems by Galerkin's method. An initial solution is computed with piecewise linear approximating functions and this is then improved by using higher—order piecewise ...
Moore, G
core   +1 more source

An exact formula for general spectral correlation function of random Hermitian matrices

, 2003
We have found an exact formula expressing a general correlation function containing both products and ratios of characteristic polynomials of random Hermitian matrices. The answer is given in the form of a determinant.
Akemann G, Andreev A V, Bleher P, Brezin E, Damgaard P H, Deift P, Deift P, Deift P, Deift P, Deift P, Efetov K B, Eugene Strahov, Fokas A S, Fokas A S, Forrester P J, Fyodorov Y V, Fyodorov Y V, Hackenbroich G, Keating J P, Kharchev S, Mehta M L, Mehta M L, Morozov A, Pastur L, Sagan B, Strahov E, Strahov E, Szegö G, Wilke T, Yan V Fyodorov   +29 more
core   +1 more source

The Synergy of Artificial Intelligence and 3D Bioprinting: Unlocking New Frontiers in Precision and Tissue Fabrication

Advanced Functional Materials, EarlyView.
Advances in integrating artificial intelligence into 3D bioprinting are systematically reviewed here. Machine learning, computer vision, robotics, natural language processing, and expert systems are examined for their roles in optimizing bioprinting parameters, real‐time monitoring, quality control, and predictive maintenance.
Joao Vitor Silva Robazzi, Irem Deniz Derman, Deepak Gupta, Logan Haugh, Yogendra Pratap Singh, Vaibhav Pal, Yasar Ozer Yilmaz, Suihong Liu, Andre Luis Dias, Rogerio Andrade Flauzino, Ibrahim Tarik Ozbolat   +10 more
wiley   +1 more source

Sums and Differences of Two Cubic Polynomials [PDF]

Monatshefte f�r Mathematik, 2000
Let \(f(x)\) be a cubic polynomial with integer coefficients. The purpose of the present paper is to investigate the frequency of nontrivial solutions to the equation \[ f(x_1)+ f(x_2)= f(x_3)+ f(x_4), \tag \(*\) \] with integers \(x_i\) in the interval \(|x_i|\leq P\).
openaire   +2 more sources

The Hierarchical Structure of Sheep Wool and Its Impact on Physical Properties

Advanced Functional Materials, EarlyView.
Sheep wool, a prevalent α‐keratinous fiber, is an essential model for studying protein‐based fibers. Its genetic diversity across breeds enables the establishment of multiscale structure‐property relationships, uncovering previously elusive insights into wool's hierarchical structure.
Serafina R. France Tribe, Paloma X. Lee, Caterina Czibula, Mónica G. Simões, Reiner Bleher, Keith E. Duncan, Michael Thoman, Christopher N. Topp, Vinayak P. Dravid, Cécile A. C. Chazot   +9 more
wiley   +1 more source

Using $\D$-operators to construct orthogonal polynomials satisfying higher order difference or differential equations [PDF]

, 2013
We introduce the concept of $\D$-operators associated to a sequence of polynomials $(p_n)_n$ and an algebra $\A$ of operators acting in the linear space of polynomials.
Durán, Antonio J.
core  

Alginate‐Sludge Derived Biochar‐Calcium Hydrogel for Phosphate Removal and Slow‐Release Fertilizer: A Sustainable and Multifunctional Solution

Advanced Functional Materials, EarlyView.
An alginate‐based biochar hydrogel (ABC‐hydrogel), derived from sewage sludge, is developed for simultaneous phosphate removal and agricultural reuse. It captures phosphorus from water and gradually releases it as fertilizer, enhancing lettuce growth.
Yu Zhang, Baile Wu, Haoran Dong, Xiaohong Guan, Irene M. C. Lo   +4 more
wiley   +1 more source