Polychoral Compositions of Marcin Mielczewski

Marcin Kilarski

Raymond B. Marcin: an appreciation.

Iwona Żak * Marcin Ciura Automatic Text Categorisation

The paper presents a module for classifying Polish text, intended for use in an automatic processing of job advertisements. Two classifying algorithms are implemented: a naive Bayes classifier and TFIDF algorithm. Stop lists and stemming are used to improve the processing efficiency.

Marcin Stefan Cwiklinski Impedance Control of a Hydraulic Servomechanism

A position-based impedance controller is proposed and demonstrated on an existing hydraulic press with a two-way vertically mounted hydraulic cylinder driven by a servo-solenoid valve. A proportional-integral-derivative (PID) controller and a Fuzzy Logic Controller (FLC) are primarily developed to meet the accurate positioning requirements of the impedance control formulation. The impedance fil...

Compositions versus Cyclic Compositions

We prove that the sum of greatest common divisors of parts in all compositions of n equals the sum of lengths of all cyclic compositions of n. The proof highlights structural similarities between the set of compositions of n and the set of cyclic compositions of n. 1. Definitions and Statement A composition of the positive integer n is an ordered partition of n; that is, a vector ( ) r p p ...,...