Autor: Swain, A. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: On Efficient Difference Type Estimators
Autorzy:: Swain, A. K. P. C.
Tematy:: Difference type
Ratio type and Regression type estimators
Efficiencies of estimators
Auxiliary information
Simple random sampling without replacement; Pokaż więcej
Data publikacji:: 2010
Powiązania:: https://bibliotekanauki.pl/articles/465693.pdf Link otwiera się w nowym oknie
Źródło:: Statistics in Transition new series; 2010, 11, 3; 128-135
1234-7655
Pojawia się w:: Statistics in Transition new series
Opis:: This paper considers a more efficient difference type estimator in a finite population set-up. Ratio type and regression type estimators are derived as special cases. Further efficiencies of these estimators are compared with classical ratio and regression estimators. Numerical illustrations are provided to compare efficiencies of different competitive estimators.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: On Classes of Modified Ratio Type And Regression-Cum-Ratio Type Estimators in Sample Surveys Using Two Auxiliary Variables
Autorzy:: Swain, A. K. P. C.
Tematy:: ratio type estimators regression-cum-ratio type estimators simple random sampling
auxiliary variables
bias
efficiency; Pokaż więcej
Data publikacji:: 2012
Powiązania:: https://bibliotekanauki.pl/articles/465714.pdf Link otwiera się w nowym oknie
Źródło:: Statistics in Transition new series; 2012, 13, 3; 473-494
1234-7655
Pojawia się w:: Statistics in Transition new series
Opis:: In this paper generalized classes of modified ratio type and regression-cum-ratio type estimators of the finite population mean of the study variable are suggested in the presence of two auxiliary variables in simple random sampling without replacement when the population means of the auxiliary variables are known in advance. Some special cases of the generalized estimators are compared with respect to their biases and efficiencies both theoretically and with the help of some natural populations.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evolutionary computation approaches to tip position controller design for a two-link flexible manipulator
Autorzy:: Subudhi, B.
Ranasingh, S.
Swain, A. K.
Tematy:: flexible manipulator
genetic algorithm
bacteria foraging
fitness function; Pokaż więcej
Data publikacji:: 2011
Powiązania:: https://bibliotekanauki.pl/articles/229971.pdf Link otwiera się w nowym oknie
Źródło:: Archives of Control Sciences; 2011, 21, 3; 269-285
1230-2384
Pojawia się w:: Archives of Control Sciences
Opis:: Controlling multi-link flexible robots is very difficult compared rigid ones due to inter-link coupling, nonlinear dynamics, distributed link flexure and under-actuation. Hence, while designing controllers for such systems the controllers should be equipped with optimal gain parameters. Evolutionary Computing (EC) approaches such as Genetic Algorithm (GA), Bacteria Foraging Optimization (BFO) are popular in achieving global parameter optimizations. In this paper we exploit these EC techniques in achieving optimal PD controller for controlling the tip position of a two-link flexible robot. Performance analysis of the EC tuned PD controllers applied to a two-link flexible robot system has been discussed with number of simulation results.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Some classes of modified ratio type estimators in sample surveys
Autorzy:: Swain, A. K. P. C.
Das, Manjula
Tematy:: ratio type estimator
simple random sampling
bias
mean square error
efficiency; Pokaż więcej
Data publikacji:: 2015
Powiązania:: https://bibliotekanauki.pl/articles/466061.pdf Link otwiera się w nowym oknie
Źródło:: Statistics in Transition new series; 2015, 16, 1; 37-52
1234-7655
Pojawia się w:: Statistics in Transition new series
Opis:: In this paper some classes of modified ratio type estimators with additive and multiplicative adjustments made to the simple mean per unit estimator and classical ratio estimator are suggested to obtain more efficient ratio type estimators compared to the classical one. Their biases and mean square errors are obtained and compared with first order approximations.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Robust H∞ output feedback control of bidirectional inductive power transfer systems
Autorzy:: Swain, A.
Almakhles, D.
Neath, M. J.
Nasiri, A.
Tematy:: inductive power transfer
wireless power transfer
robust control
linear matrix inequalities
sensitivity analysis; Pokaż więcej
Data publikacji:: 2017
Powiązania:: https://bibliotekanauki.pl/articles/230097.pdf Link otwiera się w nowym oknie
Źródło:: Archives of Control Sciences; 2017, 27, 1; 41-62
1230-2384
Pojawia się w:: Archives of Control Sciences
Opis:: Bidirectional Inductive power transfer (IPT) systems behave as high order resonant networks and hence are highly sensitive to changes in system parameters. Traditional PID controllers often fail to maintain satisfactory power regulation in the presence of parametric uncertainties. To overcome these problems, this paper proposes a robust controller which is designed using linear matrix inequality (LMI) techniques. The output sensitivity to parametric uncertainty is explored and a linear fractional transformation of the nominal model and its uncertainty is discussed to generate a standard configuration for μ-synthesis and LMI analysis. An H∞ controller is designed based on the structured singular value and LMI feasibility analysis with regard to uncertainties in the primary tuning capacitance, the primary and pickup inductors and the mutual inductance. Robust stability and robust performance of the system is studied through μ-synthesis and LMI feasibility analysis. Simulations and experiments are conducted to verify the power regulation performance of the proposed controller.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Free Volume, Molecular Mobility and Polymer Structure: Towards the Rational Design of Multi-Functional Materials
Autorzy:: Roussenova, M.
Hughes, D.
Enrione, J.
Diaz-Calderon, P.
Sivaniah, E.
Song, Q.
Ubbink, J.
Beavis, P.
Swain, A.
Alam, M.
Tematy:: 78.70.Bj
82.35.Pq
66.30.je
82.35.Np
81.05.Qk; Pokaż więcej
Data publikacji:: 2014-03
Powiązania:: https://bibliotekanauki.pl/articles/1196297.pdf Link otwiera się w nowym oknie
Źródło:: Acta Physica Polonica A; 2014, 125, 3; 801-805
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Opis:: In this short paper we illustrate the versatility of positron annihilation lifetime spectrometry when used for material characterisation by presenting a selection of recent lifetime studies carried out on novel polymeric materials with a wide range of potential industrial applications. We highlight the importance of local free volume in governing the macroscopic properties (e.g. permeation properties, mechanical strength) of these materials and how lifetime measurements can be used in conjunction with a number of complementary techniques in order to establish composition-structure-property relationships for these systems.
Dostawca treści:: Biblioteka Nauki

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