events and accidents in drinking water distribution networks are among cases that lose water and increase the rate of non revenue water. network events in addition to wasting water can cause destruction, traffic jam, pressure reduction, pollution and enormous reconstruction costs.the main focus of this study is to statistically evaluate these incidents and to develop an analytical method to pre...

In this paper, I provide a tutorial exposition on maximum likelihood estimation (MLE). The intended audience of this tutorial are researchers who practice mathematical modeling of cognition but are unfamiliar with the estimation method. Unlike least-squares estimation which is primarily a descriptive tool, MLE is a preferred method of parameter estimation in statistics and is an indispensable t...

This work demonstrates the efficiency of using linear statistical modelling for estimation of concentrations of various substances in lake water using remotely sensed multiand hyperspectral images together with extensive field measurements collected over Lake Erken in Sweden. A linear relationship was assumed between image data and the corresponding field measurements, and the transformation co...

The objective of this article is to discuss the rationale for common statistical tests used for the analysis and interpretation of prenatal diagnostic imaging studies. Examples from the literature are used to illustrate descriptive and inferential statistics. The uses and limitations of linear and logistic regression analyses are discussed in detail.

This paper brings statistical findings from a survey about the use of UML modeling and model-driven approaches for the design of embedded software in Brazil. The survey provides evidences regarding the maturity of use of UML and model-driven approaches, how they are employed, and which and where the professionals who use them are. Technical, organizational, and social aspects were investigated ...

Method: A descriptive study was performed. A questionnaire was designed to investigate which methods of diagnosis were employed by GPs with regard to childhood asthma. The questionnaire was distributed to GPs who fulfilled certain inclusion criteria and were selected by means of simple random sampling. Statistical analysis of data was done by the Department of Biostatistics, University of the F...

Method: Descriptive, transversal and observational study. Sample: people aged ≥ 65 years from Toledo. Exclusion criteria: enteral-parenteral nutrition, pathology with water restriction, current acute process, terminal illness and severe dementia. Sampling: recruitment of convenience. Variables (Ad hoc questionnaire): sociodemographic, clinical (drugs, water intake volume, nutritional habits, sy...