Results 61 to 70 of about 1,155,625 (282)

Iteration of Operators with Contractive Mutual Relations of Kannan Type

open access: yesMathematics, 2022
Inspired by the ideas of R. Kannan, we define the new concepts of mutual Kannan contractivity and mutual contractivity between two self-maps on a metric space that generalize the concepts of the Kannan map and contraction.
Ram N. Mohapatra   +3 more
doaj   +1 more source

Modelling iteration in engineering design [PDF]

open access: yes, 2007
This paper examines design iteration and its modelling in the simulation of New Product Development (NPD) processes. A framework comprising six perspectives of iteration is proposed and it is argued that the importance of each perspective depends upon ...
Clarkson, PJ, Eckert, CM, Wynn, DC
core   +1 more source

On the Convergence of the Self-Consistent Field Iteration in Kohn-Sham Density Functional Theory

open access: yes, 2013
It is well known that the self-consistent field (SCF) iteration for solving the Kohn-Sham (KS) equation often fails to converge, yet there is no clear explanation.
Liu, Xin   +3 more
core   +1 more source

Iterated Exaptation [PDF]

open access: yes, 2018
This volume focuses on detailed studies of various aspects of Construction Morphology, and combines theoretical analysis and descriptive detail.
openaire   +2 more sources

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source

Optimization procedures for Topological Tasks / Apie optimizavimo procedūras topologiniuose uždaviniuose / Процедуры оптимизации в топологических задачах

open access: yesGeodesy and Cartography, 2012
The paper analyzes the case of mathematical procedures. An appropriate minimizing function is used for solving optimization tasks. In some cases, for example dealing with tasks of topological transformation, the applied minimizing function has no point ...
Jonas Skeivalas
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Attainment of K-Means Algorithm using Hellinger distance [PDF]

open access: yesOvidius University Annals: Economic Sciences Series, 2017
In this article in the first part I will begin with an introduction to unsupervised learning methods, focusing on the K-Means clustering algorithm, which is achieved with the help of the Euclidian distance.
Stancu Ana-Maria Ramona   +2 more
doaj  

Chebyshev semi-iteration in Preconditioning [PDF]

open access: yes, 2008
It is widely believed that Krylov subspace iterative methods are better than Chebyshev semi-iterative methods. When the solution of a linear system with a symmetric and positive definite coefficient matrix is required then the Conjugate Gradient method ...
Rees, Tyrone, Wathen, A. J.
core  

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy