Results 11 to 20 of about 2,305,664 (325)

An Exact Formula for Calculating Inverse Radial Lens Distortions

open access: yesSensors, 2016
This article presents a new approach to calculating the inverse of radial distortions. The method presented here provides a model of reverse radial distortion, currently modeled by a polynomial expression, that proposes another polynomial expression ...
Pierre Drap, Julien Lefèvre
doaj   +2 more sources

A new formula for calculating normal tissue complication probability

open access: yesPrecision Radiation Oncology
Purpose To facilitate the use of quantitative modeling of biological effects in treatment planning by introducing a simpler function equivalent to the Lyman formula for calculating normal tissue complication probability (NTCP).
Tingting Cao, Qingqing Yuan, Zhitao Dai
doaj   +2 more sources

A modified formula for calculating low-density lipoprotein cholesterol values

open access: yesLipids in Health and Disease, 2010
Background The Friedewald formula (FF) is useful for calculating serum low-density lipoprotein cholesterol (LDL-C) values, but has a remarkable deviation and limitation especially in hypertriglyceridemia.
Chen Bin   +8 more
doaj   +2 more sources

Island formula in Planck brane [PDF]

open access: yesJournal of High Energy Physics, 2023
Double holography offers a profound understanding of the island formula by describing a gravitational system on AdSd coupled to a conformal field theory on ℝ1,d−1, dual to an AdSd+1 spacetime with an end-of-the-world (EOW) brane.
Jing-Cheng Chang   +3 more
semanticscholar   +1 more source

A method for calculating left ventricular ejection fraction noninvasively from left ventricular arterial coupling (Ees/Ea)

open access: yesBMC Anesthesiology, 2023
Background Ejection fraction (EF), which is assessed using ultrasonography, is a standard parameter for evaluating cardiac function in clinical cardiology and for cardiovascular management during general anesthesia.
Yukiko Yamazaki, Y. Matsuki, K. Shigemi
semanticscholar   +1 more source

Simple formula for designing the PID controller of a DC-DC buck converter

open access: yesInternational Journal of Power Electronics and Drive Systems (IJPEDS), 2023
This paper proposes a simple way to design a proportional integral derivative proportional integral derivative (PID) controller for a DC-DC buck converter.
A. S. Samosir   +2 more
semanticscholar   +1 more source

Testing a simple formula for calculating approximate intensity-duration-frequency curves

open access: yesEnvironmental Research Letters, 2021
A simple formula for estimating approximate values of return levels for sub-daily rainfall is presented and tested. It was derived from a combination of simple mathematical principles, approximations and fitted to 10 year return levels taken from ...
Rasmus E Benestad   +5 more
doaj   +1 more source

On the K-th power mean of one kind generalized cubic Gauss sums

open access: yesAIMS Mathematics, 2023
The main purpose of this paper is using the elementary methods and properties of the recurrence sequence to study the calculating problem of the $ k $-th power mean of one kind generalized cubic Gauss sums, and give an exact calculating formula for it.
Xiaoge Liu, Yuanyuan Meng
doaj   +1 more source

On the Smarandache LCM dual function [PDF]

open access: yes, 2007
The main purpose of this paper is using the elementary method to study the calculating problem of a Dirichlet series involving the Smarandache LCM dual function SL*(n) and the mean value distribution property of SL*(n), obtain an exact calculating ...
Chengliang, Tian, Yuan, Na
core   +1 more source

Calculating the Sample Size in Quantitative Studies

open access: yesSchool journal, 2021
The determination of the required sample size is always an important step during the planning of the quality of research for a quantitative study.
G. P. Adhikari
semanticscholar   +1 more source

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