A Study on the Simulation Method of Communication Environment for Decentralized Control of Multiple Unmanned Systems

2021 ◽  
Vol 26 (4) ◽  
pp. 481-493
Author(s):  
Ki-Yong Kwon ◽  
Kyung-Ho Lee ◽  
Sung Choi
Keyword(s):  
Decentralized Control ◽  
Simulation Method ◽  
Unmanned Systems ◽  
Communication Environment

Power of Modified Brown-Forsythe and Mixed-Model Approaches in Split-Plot Designs

Methodology ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 9-22 ◽  
Author(s):  
Pablo Livacic-Rojas ◽  
Guillermo Vallejo ◽  
Paula Fernández ◽  
Ellián Tuero-Herrero
Keyword(s):  
Repeated Measures ◽  
Statistical Power ◽  
Mixed Model ◽  
Covariance Structure ◽  
Simulation Method ◽  
Future Research ◽  
Repeated Measures Design ◽  
Fixed And Random Effects ◽  
Split Plot ◽  
High Level

Abstract. Low precision of the inferences of data analyzed with univariate or multivariate models of the Analysis of Variance (ANOVA) in repeated-measures design is associated to the absence of normality distribution of data, nonspherical covariance structures and free variation of the variance and covariance, the lack of knowledge of the error structure underlying the data, and the wrong choice of covariance structure from different selectors. In this study, levels of statistical power presented the Modified Brown Forsythe (MBF) and two procedures with the Mixed-Model Approaches (the Akaike’s Criterion, the Correctly Identified Model [CIM]) are compared. The data were analyzed using Monte Carlo simulation method with the statistical package SAS 9.2, a split-plot design, and considering six manipulated variables. The results show that the procedures exhibit high statistical power levels for within and interactional effects, and moderate and low levels for the between-groups effects under the different conditions analyzed. For the latter, only the Modified Brown Forsythe shows high level of power mainly for groups with 30 cases and Unstructured (UN) and Autoregressive Heterogeneity (ARH) matrices. For this reason, we recommend using this procedure since it exhibits higher levels of power for all effects and does not require a matrix type that underlies the structure of the data. Future research needs to be done in order to compare the power with corrected selectors using single-level and multilevel designs for fixed and random effects.

The glorious jubilee of Rujero Sergeevich Gilyarevsky

2019 ◽  
pp. 104-111
Author(s):  
M. Dvorkina
Keyword(s):  
Information Management ◽  
Digital Communication ◽  
Foreign Languages ◽  
Professional Values ◽  
Information Culture ◽  
Biographical Information ◽  
Communication Environment ◽  
The Subject ◽  
Cloud Technologies ◽  
Information Sciences

The author offers the brief biographical information on Rujero Sergeevich Gilyarevsky whose 90-th anniversary is celebrated. She reviews the main stages of his academic and pedagogical career, in particular, his scholarly works, his two theses studies (candidate’s and doctoral), numerous publications that have been contributing to the librarianship, library and information sciences. The author emphasizes the scope of Gilyarevsky’s professional interests and retraces expanding of the subject scope of his publications – from catalog structuring (1954) to cloud technologies, information management and scientometrics. Rujero Gilyarevsky analyzes the problems of the libraries (and e-libraries, in particular), their future, professional values of the librarians within the digital communication environment, bibliography as an element of information culture. R. Gilyarevsky has complete mastery of several foreign languages. The selected bibliography of R. Gilarevsky’s publications, including those co-authored by his colleagues, is appended.

New Simplified Low Cost Simulation Method for SME Manufacturing System

2015 ◽  
Vol 9 (2) ◽  
pp. 206
Author(s):  
Tawfik Benabdallah ◽  
Nor Nait Sadi ◽  
Mustapha Kamel Abdi
Keyword(s):  
Manufacturing System ◽  
Low Cost ◽  
Simulation Method ◽  
Cost Simulation
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