Mirosław Głowacki

AGH University of Science and Technology in Kraków | AGH · Department of Applied Computer Science and Modelling

Background and Objectives: Poor sleep quality in patients with obstructive sleep apnea (OSA) may be associated with different clinical and polysomnographic features. The aim of this study was to identify features associated with poor sleep quality in OSA patients. Materials and Methods: This was a cross-sectional study enrolling patients with OSA c...

Proposition of a cellular automata (CA) model of carbonitride precipitation to simulate image of microstructure in HSLA steels and to predict the mechanical properties is presented in the paper. CA model proved to be very efficient in modeling various phenomena in material science. Numerical modeling played an important role in development of new p...

The subject of the study is the improvement of the quality of moulding sand preparation. An exploration research performed on the data concerning moulding sand quality parameters was described. The aim of the research was to find relationships between various factors determining the properties of moulding sands and, based on the results obtained, b...

In this paper we present a method to solve a problem of brightness changes within a stack of images obtained by confocal microscope. A result of specimen scanning is a series of 2D images. Consecutive images show deeper sections of stained tissue. Within a stack of images a light attenuation increases with the depth of imaged focal planes. This wel...

Automatic identification and classification of objects being the results of image recognition algorithms became more and more popular in many aspects of human activity. On the other hand, manual stereological methods and conventional image analyzer are more often than not difficult and time-consuming tool to obtain the informative data especially f...

The paper presents the results of experimental and theoretical work leading to mathematical modelling of phenomena accompanying the deformation of steel which is still subjected to the last phase of the solidification process. Physical simulations of deformation of steel at such extra high temperature performed with the aid of advanced testing mach...

The paper deals with the modelling of density changes during the solidification of the ingots and cast strands after casting. The finite element solution of the Navier-Stokes equations are implemented into the modelling of the process. The models for both steady-state and non steady-state solutions as well as the influence of the physical parameter...

The objective of the paper is the assessment of the predictive ability of the thermomechanical-microstructural model for the closed-die forging process. The model combines the rigid-plastic flow formulation with the finite element solution of the Fourier equation with the closed-form equations describing processes of recrystallization and grain gro...

Computer-aided rolling-technology design is presented in the paper. Program is based on the solution of the set of non-linear equations which describe the process. They include continuity equations and power balance equations for continuous rolling. Reverse rolling is described by constant-rolling-force equations and power-balance equations for bot...

The prime objective of the presently reported work is to assess the accuracy of the finite-element modelling of three-dimensional metal-forming processes, where the block-compression process has been chosen for experimental substantiation of the results of the theoretical model. A three-dimensional rigid-plastic finite-element approach has been use...

A program for calculating and selecting the basic process parameters of U-Section rolling in reversing mills is presented. The program makes it possible to calculate the force and energy parameters, the temperature distribution over the strip width, the minimum initial and final temperature of rolling, the additional time necessary for cooling U-Se...

The authors analyze the working section of a pilger roll bellmouth section. The methods involve geometrical and deformation parameters which have a bearing on the curvature of the roll pass bottom. The influence exerted by the length of the stroke on distribution of deformation along the cam is also examined.

The possibility of applying the finite element method to the analysis of the plastic working of metals is considered. The basic equations of the finite element method are presented, and the procedure for solving these equations under the assumption of a rigid-plastic model of the deformed medium is outlined. As an example, the results of calculatio...

A program has been developed which makes it possible to calculate the dimensions of each pass for any range of manufactured square billets with allowance for the limiting factors of the rolling process. A detailed description is given of the algorithm, and the corresponding formulas are presented which make it possible to design the passes in accor...

The subject of the presented paper is the development of a computer aided engineering (CAE) system dedicated to the numerical simulation of plastic deformation of steel at very high temperatures. The paper reports the results of theoretical work leading to the construction of a FEM oriented code allowing the computer simulation of physical phenomen...