Results 81 to 90 of about 36,511 (307)

Solar Fuels Via Methane Valorization: Thermochemical Pathways, Unified Metrics, and Techno‐Economic Perspectives

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A first‐of‐its‐kind review benchmarks three solar methane valorization pathways with unified performance metrics for clean fuel production. Meeting global climate targets and sustainable energy demands requires carbon‐neutral fuels and innovative conversion pathways.
Muhammad Abdulmoez   +3 more
wiley   +1 more source

Evaluation of Cubic-Spline Based Gas Kinetic Method for Simulating Compressible Turbulence

open access: yesJournal of Applied Fluid Mechanics, 2019
In this work, we implement and examine a new flow reconstruction methodology using cubic-splines for inter-polations in the gas kinetic method (GKM). We compare this version of GKM with the existing WENO based interpolation method.
N. Parashar, B. Srinivasan, S. S. Sinha
doaj  

The Estimating Parameter and Number of Knots for Nonparametric Regression Methods in Modelling Time Series Data

open access: yesModelling
This research aims to explore and compare several nonparametric regression techniques, including smoothing splines, natural cubic splines, B-splines, and penalized spline methods.
Autcha Araveeporn
doaj   +1 more source

Rational Cubics and Conics Representation: A Practical Approach

open access: yesInternational Islamic University Malaysia Engineering Journal, 2012
A rational cubic spline, with one family of shape parameters, has been discussed with the view to its application in Computer Graphics. It incorporates both conic sections and parametric cubic curves as special cases.
M. Sarfraz, Z. Habib
doaj   +1 more source

Discrete Cubic Interpolatory Splines

open access: yesPublications of the Research Institute for Mathematical Sciences, 1992
In the present paper, existence, uniqueness and convergence properties of a discrete cubic spline which satisfies certain averaging interpolatory condition are established. This type of interpolatory condition has been studies earlier for usual cubic splines in [3].
openaire   +2 more sources

Local Linear Forecasts Using Cubic Smoothing Splines [PDF]

open access: yes
We show how cubic smoothing splines fitted to univariate time series data can be used to obtain local linear forecasts. Our approach is based on a stochastic state space model which allows the use of a likelihood approach for estimating the smoothing ...
Baki Billah   +3 more
core  

N‐terminal pro‐brain natriuretic peptide and cardiorenal outcome in patients with anaemia in chronic kidney disease

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 848-858, April 2025.
Abstract Aims Blood levels of N‐terminal pro‐brain natriuretic peptide (NT‐proBNP) may be modified by low renal clearance and anaemia. The aim of this study was to investigate the impact of the blood NT‐proBNP level on cardiovascular and renal outcomes in patients with these two manifestations.
Hiroshi Nishi   +4 more
wiley   +1 more source

A class of cubic and quintic spline modified collocation methods for the solution of two-point boundary value problems

open access: yes, 1987
This paper is concerned with the study of a class of methods for solving second and fourth-order two-point boundary-value problems. The methods under consideration are modifications of the standard cubic and quintic spline collocation techniques, and ...
Soares, M J, Papamichael, N
core  

Machine learning‐based prediction of elevated N terminal pro brain natriuretic peptide among US general population

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 859-868, April 2025.
Abstract Aims Natriuretic peptide‐based pre‐heart failure screening has been proposed in recent guidelines. However, an effective strategy to identify screening targets from the general population, more than half of which are at risk for heart failure or pre‐heart failure, has not been well established.
Yuichiro Mori   +5 more
wiley   +1 more source

A method for solving moving boundary problems in heat flow part ii: Using cubic polynomials

open access: yes, 1972
A moving grid system has been used to get the solution of the moving boundary problem discussed earlier in Part I, but basing the necessary interpolations on ordinary cubic polynomials rather than splines.
Gupta, R, Crank, J
core  

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