Mathematical Models of 2D Plotter Components

On Mathematical Characteristics of some Improved Estimators of the Mean and Variance Components in Elliptically Contoured Models

In this paper we treat a general form of location model. It is typically assumed that the error term is distributed according to the law belonging to the class of elliptically contoured distribution. Some sorts of shrinkage estimators of location and scale parameters are proposed and their exact bias and MSE expressions are derived. The performance of the estimators under study are compl...

Augmented Reality Equation Plotter

Motivation: A student in a math, science, or engineering class will undoubtedly come across an equation in the course of his or her studies that the student will want to quickly visualize. Plotting the equation allows the student to better understand some property of the real variables the equation relates. However, this may still be difficult for younger students that are working on building t...

Simulation of Pedestrian Dynamics with Macroscopic and Microscopic Mathematical Models

Here, we collect two parts of a research project on the pedestrian flow modeling. Rapid growth in the volume of public transport and the need for its reasonable, efficient planning have made the description and modeling of transport and pedestrian behaviors as important research topics in the past twenty years. First, we present a macroscopic model for the pedestrian flow based on continuum mec...

Interferometric method of measuring plotter distortion.

The authors are with the Itek Corporation, Lexington, Massachusetts 02173. Received 25 September 1973. In this letter an interferometric method of measuring plotter distortion is described. A common method of measuring plotter distortion is to draw a known pattern, such as straight lines, and scan this pattern with a microdensitometer. This is a precise method of measuring distortion; however, ...

Mathematical Models of Branching