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Keyword: Maximum Likelihood
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Open AccessArticle
9 Pages, 1,457 KB Download PDF

Estimation of the Population Mean for Incomplete Data by using Information of Simple Linear Relationship Model in Data Set

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 4, Page # 161–169, 2021; DOI: 10.25046/aj060419
Abstract:

The objective of this research is to propose the estimator of the population mean for incomplete data by using information of simple linear relationship model in the data set. In addition, the factorization of the likelihood function is created to derive the maximum likelihood estimator for the population mean. The simulation study was conducted for…

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(This article belongs to Section Statistics & Probability (STP))
Open AccessArticle
18 Pages, 3,126 KB Download PDF

Comparative Analysis of Land Use/Land Cover Change and Watershed Urbanization in the Lakeside Counties of the Kenyan Lake Victoria Basin Using Remote Sensing and GIS Techniques

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 671–688, 2021; DOI: 10.25046/aj060278
Abstract:

The ecosystems and landscape patterns in Lake Victoria basin are increasingly being modified by changes in land use/land cover. Understanding dynamics of these changes is essential for appropriate planning. This study evaluated changes in landscape environment, of the lakeside counties of the Kenyan Lake Victoria basin, which have occurred over a forty-year period (1978-2018) and…

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(This article belongs to Section Environmental Sciences (ENS))
Open AccessArticle
13 Pages, 977 KB Download PDF

Optimal Designs of Constrained Accelerated Life Testing Experiments for Proportional Hazards Models

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 1, Page # 101–113, 2019; DOI: 10.25046/aj040111
Abstract:

This paper investigates the methods of optimal design construction for step-stress accelerated life testing (ALT) when a Cox’s hazards model is adopted with either a linear or a quadratic baseline hazard function. We discuss multiple step-stress plans for time-censored ALT experiments. The maximum likelihood method is utilized for estimating the model parameters. The information matrices…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Statistics & Probability (STP))
Open AccessArticle
7 Pages, 915 KB Download PDF

Lookup Tables-based mean level detection of spatially distributed targets in non Gaussian clutter

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 3, Page # 1508–1514, 2017; DOI: 10.25046/aj0203189
Abstract:

In this paper, Constant False Alarm Rate (CFAR) detection of spatially distributed targets embedded in compound Gaussian clutter with Inverse Gamma texture is addressed. By taking into account the fact that clutter parameters are unknown in practical situations, we propose mean level based on Lookup Tables detectors, that operate as a two-step approach, which consists…

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(This article belongs to the SP3 (Special issue on Recent Advances in Engineering Systems 2017) & Section Mathematics (MAT))

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