Results 21 to 30 of about 11,041,440 (317)
Clustering dichotomously scored items through functional k-means algorithm
, 2016 In the educational field, it is common to analyze the probability of a correct response to a test item as a continuous function of the item parameters and the subject ability. This relation is given by the item response function.
Di Battista, Tonio; Dipartimento di Metodi Quantitativi e Teoria Economica, Università "G. d'Annunzio" Chieti-Pescara +1 more
core +1 more source
Functional effects of KCNQ K+ channels in airway smooth muscle
Frontiers in Physiology, 2013 KCNQ (Kv7) channels underlie a voltage-gated K+ current best known for control of neuronal excitability, and its inhibition by Gq/11-coupled, muscarinic signaling. Studies have indicated expression of KCNQ channels in airway smooth muscle (ASM), a tissue
Alexey I Evseev +7 more
doaj +1 more source
K-functional and weighted moduli of smoothness
Journal of Approximation Theory, 1990 Les auteurs mettent en évidence des équivalents de la fonctionnelle K, et du module de régularité \(\omega^ r_{\phi}(f,t)_{w,p}\), qui interviennent dans la théorie de l'interpolation, pour des espaces de Sobolev avec poids sur un intervalle de \({\mathbb{R}}\), \(1\leq ...
Ditzian, Z, Totik, V
openaire +1 more source
A Critical Review on Soil Gas Analysis: Modern Technologies and Problems
AgronomyIn this review article, the main techniques for spectroscopic studies of gases in field conditions are considered. The issues related to the study of gas emissions from soils and the determination of their concentrations are analysed.
Alexander G. Bannov +4 more
doaj +1 more source
On a Functional Equation Associated with (a,k)-Regularized Resolvent Families
Abstract and Applied Analysis, 2012 Let a∈Lloc1(ℝ+) and k∈C(ℝ+) be given. In this paper, we study the functional equation R(s)(a*R)(t)-(a*R)(s)R(t)=k(s)(a*R)(t)-k(t)(a*R)(s), for bounded operator valued functions R(t) defined on the positive real line ℝ+.
Carlos Lizama, Felipe Poblete
doaj +1 more source
The $$K$$ -functional for $$p$$ -convexifications
Positivity, 2012 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +4 more sources
Presenilins Upregulate Functional K+Channel Currents in Mammalian Cells
Neurobiology of Disease, 1998 Mutations in presenilin 1 (PS-1) and presenilin 2 (PS-2) have been linked to early onset, autosomal dominant Alzheimer's disease. Neither the normal function(s) of the presenilins nor their role(s) in mediating the devastating neurological and ...
Sacha A. Malin +4 more
doaj +1 more source
Functional Mechanism of Ginsenoside Compound K on Tumor Growth and Metastasis
Integrative Cancer Therapies, 2022 Ginsenosides, as the most important constituents of ginseng, have been extensively investigated in cancer chemoprevention and therapeutics. Among the ginsenosides, Compound K (CK), a rare protopanaxadiol type of ginsenoside, has been most broadly used ...
Jinlong Liu PhD +8 more
doaj +1 more source
Consistency of the $k$-nearest neighbors rule for functional data
Comptes Rendus. Mathématique, 2023 The problem of nonparametric classification by $k$-nearest neighbors rule in a general metric space will be considered. Consistency and strong consistency of the classifier will be established under mild conditions.
Younso, Ahmad
doaj +1 more source
On Kantorovich variant of Brass-Stancu operators
Demonstratio MathematicaIn this study, we deal with Kantorovich-type generalization of the Brass-Stancu operators. For the sequence of these operators, we study Lp{L}^{p}-convergence and give some upper estimates for the Lp{L}^{p}-norm of the approximation error via first-order
Bodur Murat +2 more
doaj +1 more source