Results 41 to 50 of about 686,774 (286)

Estimators Proposed by Geometric Mean, Harmonic Mean and Quadratic Mean [PDF]

open access: yesScience Journal of Applied Mathematics and Statistics, 2016
In the studies in literature up to date arithmetic population mean of auxiliary variable is used to obtain the proportional estimators. In this paper geometric mean, harmonic mean and quadratic mean is used as well as arithmetic population mean. Using geometric mean, harmonic mean and quadratic mean do not affect the variance of ratio estimator ...
openaire   +1 more source

Biopsychosocial Determinants of Hand Function and Its Trajectories Over Five Years in Patients With Hand Osteoarthritis

open access: yesArthritis Care &Research, EarlyView.
Objective This study aimed to investigate hand function trajectories over five years in primary hand osteoarthritis (OA). Additionally, determinants of baseline and longitudinal hand function were assessed. Methods A total of 538 patients with both baseline and five‐year study visits were analyzed.
Annemiek V. E. M. Olde Meule   +4 more
wiley   +1 more source

Discordance Between Patient and Physician Global Assessments in Early Systemic Sclerosis

open access: yesArthritis Care &Research, EarlyView.
Objective This study aims to identify factors associated with patient global assessment (PtGA) and physician global assessment (PhGA) and discordance between them in systemic sclerosis (SSc). Methods Data from adults with early SSc (<5 years) from the Collaborative National Quality and Efficacy Registry were included.
Ellen Romich   +35 more
wiley   +1 more source

Comparison of various models on cancer rate and forecasting

open access: yesJournal of Applied Sciences and Environmental Management, 2017
In this research work, three models were identified; linear regression model, exponential growth model and the quadratic trend model and the results of the work compared.
Bawa Musa
doaj   +1 more source

Unification Theories: Means and Generalized Euler Formulas

open access: yesAxioms, 2020
The main concepts in this paper are the means and Euler type formulas; the generalized mean which incorporates the harmonic mean, the geometric mean, the arithmetic mean, and the quadratic mean can be further generalized.
Radu Iordanescu   +2 more
doaj   +1 more source

Swimming of a sphere in a viscous incompressible fluid with inertia

open access: yes, 2016
The swimming of a sphere immersed in a viscous incompressible fluid with inertia is studied for surface modulations of small amplitude on the basis of the Navier-Stokes equations.
Felderhof, B. U., Jones, R. B.
core   +1 more source

Discordance Between Systemic Lupus Erythematosus Disease Activity Index Domain Weights and Their Association With Organ Damage Accrual

open access: yesArthritis Care &Research, EarlyView.
Objective Studies of damage accrual in patients with systemic lupus erythematosus (SLE) show associations with disease activity measured by the SLE Disease Activity Index 2000 (SLEDAI‐2K), but these associations are imperfect. SLEDAI scores are powerfully influenced by weightings (1–8) assigned to each domain.
Kevin Zhang   +8 more
wiley   +1 more source

Optimal tracking control in photovoltaic using linear quadratic tracking

open access: yesJournal of Aceh Physics Society, 2022
Abstrak. Penelitian ini membahas tentang masalah penjejak pasif photovoltaic terhadap posisi matahari secara optimal. Penjejak pasif digunakan ketika penjejak aktif tidak berfungsi.
Mohd Iqbal Muttaqin   +3 more
doaj   +1 more source

Mean-Field Stochastic Linear Quadratic Optimal Control Problems: Closed-Loop Solvability

open access: yes, 2016
An optimal control problem is studied for a linear mean-field stochastic differential equation with a quadratic cost functional. The coefficients and the weighting matrices in the cost functional are all assumed to be deterministic.
Li, Xun, Sun, Jingrui, Yong, Jiongmin
core   +1 more source

Linear Quadratic Mean-Field Games with Communication Constraints

open access: yes2022 American Control Conference (ACC), 2022
Accepted in American Control Conference ...
Shubham Aggarwal   +2 more
openaire   +2 more sources

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