Results 21 to 30 of about 50,101 (256)

AC motor diagnostics system based on complex parametric analysis

open access: yesIOP Conference Series: Materials Science and Engineering, 2017
Sergei Solovev
exaly   +2 more sources

THE FLOW CALCULATION OF END PRODUCTS OF FUEL COMBUSTION THROUGH THE AIR-GAS CHANNEL OF GAS TURBINE ENGINE

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2017
The article includes relations, allowing to calculate the flow rate of combustion products through the airgas channel of the gas turbine engine (GTE) gas pumping units (GPU). Usina of this dependence allows parametric diagnostics of GTE gas pumping units
S. I. Perevoshcikov
doaj   +1 more source

CORRECTION OF INJECTORS REDUCED CHARACTERISTICS BASED ON THE MACHINES PARAMETRIC DIAGNOSTICS RESULTS

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2015
A procedure is offered for recalculation of values of the centrifugal natural gas injectors’ basic parameters characterizing the technological capabilities of these machines and their performance efficiency.
S. I. Perevoschikov
doaj   +1 more source

ORGANIZATION OF GAS PUMPING AGGREGATES OPERATION BASED ON THE RESULTS OF THEIR STATE DIAGNOSTICS

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2015
A method is presented which permitted to rationally arrange the operation of gas pumping aggregates realizing their loading for transported gas in such a way that the aggregates be not overloaded in capacity and no conditions are created for the ...
S. I. Perevoscbikov
doaj   +1 more source

A Comparison of Parametric and Nonparametric Approaches to ROC Analysis of Quantitative Diagnostic Tests [PDF]

open access: yesMedical Decision Making, 1997
Receiver operating characteristic (ROC) analysis, which yields indices of accuracy such as the area under the curve (AUC), is increasingly being used to evaluate the performances of diagnostic tests that produce results on continuous scales. Both par ametric and nonparametric ROC approaches are available to assess the discriminant capacity of such ...
K O, Hajian-Tilaki   +3 more
openaire   +2 more sources

icenReg: Regression Models for Interval Censored Data in R

open access: yesJournal of Statistical Software, 2017
The non-parametric maximum likelihood estimator and semi-parametric regression models are fundamental estimators for interval censored data, along with standard fullyparametric regression models.
Clifford Anderson-Bergman
doaj   +1 more source

Semi-parametric estimation of the binormal ROC curve for a continuous diagnostic test [PDF]

open access: yesBiostatistics, 2004
Not until recently has much attention been given to deriving maximum likelihood methods for estimating the intercept and slope parameters from a binormal ROC curve that assesses the accuracy of a continuous diagnostic test. We propose two new methods for estimating these parameters. The first method uses the profile likelihood and a simple algorithm to
Cai, Tianxi, Moskowitz, Chaya S.
openaire   +3 more sources

STRUCTURAL AND DIAGNOSTIC CHARACTERISTIC AND PARAMETRIC EVALUATION OF LEASING

open access: yesProceedings of Scientific Works of Cherkasy State Technological University. Series: Economic Sciences, 2015
In the article structural and diagnostic characteristic and parametric evaluation of leasing are considered. A detailed analysis of the situation in leasing activity is made. This analysis has allowed to determine the following factors for leasing development in Ukraine: more realistic economic policy of new government, stabilization of monetary policy,
openaire   +4 more sources

Observational Diagnostics of a Parametrized Deceleration Parameter in FRW Cosmology

open access: yesParticles
The evolution of the deceleration parameter q(z) plays a crucial role in understanding the dynamics of dark energy within the framework of modern cosmology. In this study, we perform a parametric reconstruction of q(z) in a spatially flat Friedmann–Robertson–Walker (FRW) Universe composed of radiation, pressureless dark matter, and dark energy.
Bhupendra Kumar Shukla   +4 more
openaire   +1 more source

Parametric Diagnostic State of Gas Turbine Power Plant

open access: yesProcedia Engineering, 2017
Abstract The method of the parametric diagnostic state of the gas turbine power plant (GTPP) used to power aircraft and ground targets with compressed air, constant, and variable electrical power. The method is based on the identification (determining) of the status of the GTPP components (compressor, combustor, turbine) using a mathematical model ...
A.S. Gishvarov, J.C. Raherinjatovo
openaire   +1 more source

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