Block Empirical Likelihood for Longitudinal Single-Index Varying-Coefficient Model by Yunquan Song, Ling Jian, Lu Lin

“…In this paper, we consider a single-index varying-coefficient model with application to longitudinal data. In order to accommodate the within-group correlation, we apply the block empirical likelihood procedure to longitudinal single-index varying-coefficient model, and prove a nonparametric version of Wilks’ theorem which can be used to construct the block empirical likelihood confidence region with asymptotically correct coverage probability for the parametric component. …”
Get full text

Extended Odd Fréchet-G Family of Distributions by Suleman Nasiru

“…The results revealed that the special distributions developed from the new family can provide reasonable parametric fit to the given data set compared to other existing distributions.…”
Get full text

Construction of a Class of Sharp Löwner Majorants for a Set of Symmetric Matrices by Mauricio Fernández, Felix Fritzen

“…A special class of Löwner majorants is analyzed based on two specific matrix parametrizations: a two-parametric form and a four-parametric form, which arise in the context of so-called zeroth-order bounds of the effective linear behavior in the field of solid mechanics in engineering. …”
Get full text

Optimal two-stage group sequential designs based on Mann-Whitney-Wilcoxon test. by Yeonhee Park

“…We demonstrate the application of these designs through illustrative examples and evaluate their operating characteristics.…”
Get full text

Extreme value prediction of the roll motion under random seas by Jie ZHU, Zailiang LIU, Yan LIN, Wei CHAI

“…., the dead ship condition and parametric roll are selected in order to study and evaluate ship stability as well as safety at seas. …”
Get full text

Investigation of wave processes and rhythmic activity of the human brain using the Walsh orthogonal function system by Stepanyan, Ivan Viktorovich, Lednev, Mikhail Yuryevich

“…The purpose of this work is to study the wave processes and rhythmic activity of the brain based on multiscale parametric maps of electroencephalograms obtained as a result of algorithmic application of a system of discrete functions. …”
Get full text

University proceedings. Volga region. Medical sciences by A.Yu. Mikhailov, E.V. Khalimov, S.N. Styazhkina, O.V. Surnina, B.R. Sharipkulov

“…Statistical analysis was conducted using parametric and non-parametric analysis methods. Results. …”

Isolation of a periodic component by singular wavelet decomposition by V. M. Romanchak, M. A. Hundzina

“…Comparison of the calculation results confirms that nonparametric approximation based on singular wavelets and the application of parametric regression can lead to similar results.…”
Get full text

Comparison of tests for trend in location and scale parameters in hydrological and precipitation time series by Agnieszka Rutkowska, Silvia Kohnová

“…Aim of the study: The objective was the comparison of properties of tests for trend in location and scale parameters for hydrological and precipitation time series, in particular (i) to review the non-parametric tests known from literature for various trends; the tests were studied from the point of view of their ability of detecting the existing trend (their power), (ii) to study the non-parametric tests for change in scale the power of which has not been estimated yet in application to hydrological and precipitation series (the Ansari-Bradley (AB), Siegel-Tukey (ST), Mood (M) tests), and (iii) to assess the differences between the tests. …”
Get full text

Service quality assessment in IT projects based on aggregate indicators by A. E. Krasnov, A. A. Sapogov

“…The decomposition of complex systems to the level of elementary relationship subsystems more adequately reflects interrelated phenomena in a complex system.Conclusions. The practical application of the neural network parametric data aggregation model for assessing the quality of IT services is demonstrated. …”
Get full text

Synthesis Based on Linearization of Vector Speed Control of an Induction Motor without a Speed Sensor by O. F. Opeiko

“…The aim of the work was parametric synthesis of vector sensorless (i. e. without speed sensor) control of an electric drive with an induction motor. …”
Get full text

Robust Adaptive Control of Dual Active Bridge DC-DC Converter with Constant Power Loading by Effah Emmanuel K., Effah Francis B., Okyere Philip Y., Anto Emmanuel K.

“…The standard model reference adaptive control (MRAC) application to the Dual Active Bridge (DAB) converter has proven to achieve excellent dynamic and tracking responses under parametric uncertainty. …”
Get full text

SIMULATION OF THE ELECTRIC DRIVE DYNAMICS ON THE BASIS OF ROOT LOCUS MODEL by A. A. Nesenchuk

“…The paper represents the task of simulation of the control system dynamics in the rotor flux oriented vector control system of the induction motor with application of the mathematical model in the form of the extended root locus. …”
Get full text

Statistics for scientific research: an indispensable 21st century alliance by Augusto Mamani-Poma

“…Statistical tests, whether parametric or non-parametric, provide a rigorous framework for validating hypotheses and drawing meaningful conclusions3. …”
Get full text

齿轮减速器振动噪声研究进展 by 周建星, 孙文磊, 刘更

“…Gear transmission is widely used in power and mechanical driving device,moreover it is the main vibration and noise source.The research developments of reducer vibration and noise mechanism,prediction method and control measures are reviewed.The gear whine noise and gear rattle noise mechanism are introduced.The early application and development of experience formula method and FEM-BEM,SEA numerical methods in reducer noise prediction are commented.In the aspect of reducer vibration and noise reduction,the gear parametric option,gearbox structure improvement,damping material application,gear tooth modification and active control method are summarized.The useful theoretical guideline to the design of the gear reducer is provided.Finally,some problems existed are pointed out for further study.…”
Get full text

Modeling the compressive strength of concrete at different curing regimes using machine learning by Kennedy C. Onyelowe, Ahmed M. Ebid, Rosa Belén Ramos Jiménez, Angel Geovanny Lozano Guamán, Diego Ramiro Ñacato Estrella, Juan Carlos Cayán Martínez, Eduardo Francisco García Cabezas, Paul Awoyera

“…This outcome agrees with previous application of the ANN, with the increased neurons adding to the superiority of the present application of the ANN. …”
Get full text

Approximation of the Profile of Gas Turbine Engine Blades by M. E. Soloviev, Y. N. Shuleva, S. L. Baldaev, L. Kh. Baldaev

“…To transfer a given blade cross-section profile to the appropriate CAD/CAM system or engineering analysis package, parametric modeling methods are used to automate this operation. …”
Get full text

A Realistic Model Reference Computed Torque Control Strategy for Human Lower Limb Exoskeletons by Sk K. Hasan

“…To overcome these limitations, this study introduces a novel realistic model reference computed torque controller that accounts for parametric uncertainties while optimizing computational efficiency. …”
Get full text

A Bayesian model for age at death with cohort effects by Matteo Dimai, Marek Brabec

“…BACKGROUND: Ongoing mortality trends affect the distribution of age at death, typically described by parametric models. Cohort effects can markedly perturb the distribution and reduce the fit of such models, and this needs to be specifically taken into account. …”
Get full text

Marketing Innovations of Countries in the Context of the Implementation of the Sustainable Development Goals by Taraniuk Leonid, Taraniuk Karina, Korsakiene Renata, Miceikienė Astrida

“…The research design involves the use of synthesis methods, parametric, graph-analytical, and criterion methods, and procedures for analyzing innovation marketing in countries. …”
Get full text