Regression Model of Ecological Backpack Ukrainian Coal

Prospects of Ukrainian Coal Industry Development for the Branch Restructuring

Bias in Ecological Regression

Bias formulae are derived for ecological regression estimators. These formulae are useful for determining the direction and magnitude of bias in estimation. It is shown that when group cohesion is higher in areas with higher concentrations of group members and when polarization is higher in more homogeneous areas, ecological regression estimates of polarization will tend to be biased upward. Bo...

Environmental effects of increased coal utilization: ecological effects of gaseous emissions from coal combustion.

This report is limited to an evaluation of the ecological and environmental effects of gaseous emissions and aerosols of various types which result from coal combustion. It deals with NOx, SOx, fine particulate, photochemical oxidant and acid precipitation as these pollutants affect natural and managed resources and ecosystems. Also, synergistic effects involving two or more pollutants are eval...

Observer-based and Regression Model-based Detection of Emerging Faults in Coal Mills

In this paper three different approaches for fault detections are compared on example with coal mill used at a power plant. The compared methods are based on: an optimal unknown input observer, static and dynamic regression model-based detections. These approaches are compared on data from a coal mill, where a fault emerges during the test set. The conclusion on the comparison is that observerb...

Kinetic Model of Coal Combustion