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Finding of Exact Solutions and their Visualization by Means of Computer Mathematics Systems in Mathematical Models of Inflation Control with Power Dependence

100%

Aksen E. , Chichurin A.

tom Nr 1(1)

31--41

A series of exact solutions is found and their visualization is presented by means of the computer mathematics system Mathematica in mathematical models of inflation control with the power constraints relative to the nature of the real monetary emission rate and the relative rate of the change in factors influencing the money demand.

Za pomocą programu Mathematica znaleziono są kilka rozwiązań dokładnych oraz wprowadzono ich wizualizację dla modeli matematycznych sterowania się inflacją. Takie rozwiązania zrobiono są przy ograniczeniach potęgowych względem charakteru intensywności realnej pieniężnej emisji oraz szybkości względnej zmiany czynników, które wpływają ma popyt pieniężny.

Komputerowa wizualizacja i animacja przedsięwzięć górniczych

100%

Jurdziak L.

1999

tom Vol. 41, nr 4-5

3-21

Wprowadzenie technologii wirtualnej rzeczywistości w środowisko górniczych systemów poprzez pakiety geologiczno-górnicze ze szczególnym uwzględnieniem programów VROOM1 i GO!

The introduction of virtual reality technology into the environment of mining systems with the use of geological-mining packages with particular consideration of VROOM! and GO! software.

On the Representation of Human Motions and Distance-based Retargeting

80%

Hengeveld S. , Mucherino A.

2021

tom Vol. 25

181--189

Distance-based motion adaptation leads to the formulation of a dynamical Distance Geometry Problem (dynDGP) where the involved distances simultaneously represent the morphology of the animated character, as well as a possible motion. The explicit use of inter-joint distances allows us to easily verify the presence of joint contacts, which one generally wishes to preserve when adapting a given motion to characters having a different morphology. In this work, we focus our attention on suitable representations of human-like animated characters, and study the advantages (and disadvantages) in using some of them. In the initial works on distance-based motion adaptation, a 3ndimensional vector was employed for representing the positions of the n joints of the character at a given frame. Here, we investigate the use of another, very popular in computer graphics, representation that basically replaces every joint position in the three-dimensional space with a set of three sorted Euler angles. We show that the latter can in fact be useful for avoiding some of the artifacts that were observed in previous computational experiments, but we argue that this Euler-angle representation, from a motion adaptation point of view, does not seem to be the optimal one. By paying particular attention to the degrees of freedom of the studied representations, it turns out that a novel character representation, inspired by representations used in structural biology for molecules, may allow us to reduce the character degrees of freedom to their minimal value. As a result, statistical analysis on human motion databases, where the motions are given with this new representation, can potentially provide important insights on human motions. This study is an initial step towards the identification of a full set of constraints capable of ensuring that unnatural postures for humans cannot be created while tackling motion adaptation problems.

Technologie informacyjne w warsztacie homilisty

80%

Wiszowaty E.

nr 29

225-238

The development of information technology has a profound impact on all areas of life without exception. These technologies are tools that enable the user not only to obtain information, select, process and manage it but also pass it on to other people. In the context of the media society also a preacher of the word of God during Sunday and holiday masses cannot ignore the assistance they offer if he wants to avoid the danger that his efforts will be treated as a kind of an open-air museum. The main thread of the study is therefore an attempt to identify opportunities for the use of these technologies in the homilist’s skills and tools because they can provide an interesting and profitable alternative to traditional forms of homiletic expertise. Attention is drawn to the fact that in order to use these technologies efficiently and in accordance with the nature of the homily they should be treated only as a supporting source that provides preaching material.