Results 1 to 10 of about 11,653,744 (332)

A quadratic function of activation in individuals at risk of Alzheimer's disease. [PDF]

open access: yesAlzheimers Dement (Amst), 2020
Introduction Brain activation is hypothesized to form an inverse U‐shape in prodromal Alzheimer's disease (AD), with hyperactivation in the early phase, followed by hypoactivation.
Corriveau-Lecavalier N   +7 more
europepmc   +2 more sources

Geometry-Based Conditions for a Quadratic Function: Application to Stability of Time-Varying Delay Systems

open access: yesIEEE Access, 2020
In this paper, novel geometry-based negative conditions are presented for a quadratic function with time-varying delays. The system performance could be optimal by adjusting a parameter value.
Tae H. Lee
doaj   +2 more sources

Quadratic function between arterial partial oxygen pressure and mortality risk in sepsis patients: an interaction with simplified acute physiology score. [PDF]

open access: yesSci Rep, 2016
Oxygen therapy is widely used in emergency and critical care settings, while there is little evidence on its real therapeutic effect. The study aimed to explore the impact of arterial oxygen partial pressure (PaO2) on clinical outcomes in patients with ...
Zhang Z, Ji X.
europepmc   +2 more sources

Quadratic transformation inequalities for Gaussian hypergeometric function

open access: yesJournal of Inequalities and Applications, 2018
In the article, we present several quadratic transformation inequalities for Gaussian hypergeometric function and find the analogs of duplication inequalities for the generalized Grötzsch ring function.
Tie-Hong Zhao   +3 more
doaj   +2 more sources

On the complexity of finding a local minimizer of a quadratic function over a polytope [PDF]

open access: yesMathematical programming, 2020
We show that unless P=NP, there cannot be a polynomial-time algorithm that finds a point within Euclidean distance $$c^n$$ c n (for any constant $$c \ge 0$$ c ≥ 0 ) of a local minimizer of an n -variate quadratic function over a polytope.
Amir Ali Ahmadi, Jeffrey O. Zhang
semanticscholar   +1 more source

PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TGT BERBANTUAN GEOGEBRA DAN QUIZIZZ UNTUK MENINGKATKAN HASIL BELAJAR MATERI FUNGSI KUADRAT

open access: yesJurnal Lebesgue, 2023
This Collaborative Classroom Action Research (CAR) aims to improve learning outcomes in Quadratic Function material using the cooperative learning type TGT (Teams, Games, and Tournament) which assisted by GeoGebra and Quizizz for class X students of SMA ...
Desti Anisa Zoraida   +2 more
doaj   +1 more source

A Combined Cubic and Novel Line Search CG-Algorithm [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2012
In this paper a new line search technique is investigated. It uses (cubic and novel) line searches in the standard CG-algorithm for unconstrained optimization.
Abbas Al-Bayati, Hamsa Chilmerane
doaj   +1 more source

Influence of the Surface Texture Parameters of Asphalt Pavement on Light Reflection Characteristics

open access: yesApplied Sciences, 2023
The optical reflection characteristics of asphalt pavement have an important influence on road-lighting design, and the macrotexture and microtexture of asphalt pavement significantly affect its reflection characteristics.
Peng Xu   +6 more
doaj   +1 more source

Asymptotic behavior of Fréchet functional equation and some characterizations of inner product spaces

open access: yesDemonstratio Mathematica, 2023
This article presents the general solution f:G→Vf:{\mathcal{G}}\to {\mathcal{V}} of the following functional equation: f(x)−4f(x+y)+6f(x+2y)−4f(x+3y)+f(x+4y)=0,x,y∈G,f\left(x)-4f\left(x+y)+6f\left(x+2y)-4f\left(x+3y)+f\left(x+4y)=0,\hspace{1.0em}x,y\in {\
Park Choonkil   +4 more
doaj   +1 more source

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