Browsing by Subject "models"

Now showing 1 - 4 of 4

Access status: Open Access ,
Model identification for active noise control in the presence of primary noise
(Wydawnictwa AGH, 2005) Kasprzyk, Jerzy
A problem of electro-acoustic plant identification for active noise control is discussed. It is assumed that data from identification experiment are contaminated by a primary noise that should be attenuated later. Three examples of such a noise are considered: sine (discrete spectrum), noise generated by a motor (narrowband time-varying spectrum) and broadband noise (pseudorandom). It is shown that thanks to preprocessing the data by disturbance adjusting filtration (DAF) it is possible to improve the results significantly when the data are contaminated by a narrowband primary noise. DAF is the procedure of selective filtration in frequency domain consisting in removing from the spectra all lines for frequencies corresponding to the noise. The results of real-world experiments carried on in a laboratory enclosure show the accuracy of estimated frequency responses obtained in the proposed approach. The procedure is efficient when multisine signals are used to excite the plant.
Access status: Open Access ,
Modeling of gas consumption in the city
(2017) Cieślik, Tomasz; Metelska, Klaudia
Based on the data collected over a two year time period, which included temperature, wind speed and gas consumption during the day, the effects of weather factors on gas consumption in the city have been established with the use of multiple regression. The impact of a particular month, day (dummy variable) or holiday of a year on the gas consumption has also been determined. The models of linear regression and artificial neural networks have been constructed for determining the gas consumption. An attempt has been made to find the best regression models and compare them to the neural network models with the use of mean absolute percentage error (MAPE).
Access status: Open Access ,
Wstęp. Aktywność, podmiotowość, tożsamość – osoby z niepełnosprawnościami w społecznych przestrzeniach życia codziennego
(Wydawnictwa AGH, 2020) Niedbalski, Jakub; Racław, Mariola
This introduction is intended to outline the topics of a special issue on the notions of activity, subjectivity and identity of people with disabilities. The matters concerning disability, both in the scientific discourse and social perception, are constantly under discussion and broad analysis, thus the different perspectives and ways of addressing them. While crucial but also somewhat opposite to each other are the medical and social models of disability. There is a biopsychological model in between them, which assigns an individual with an active subject role having some characteristics of biological and psychological nature, as well as those related to the social functioning of that individual. A key to this approach is an action called empowerment, meaning the process of regaining an individual’s self-confidence and self-awareness. Identity grows here on awareness of one’s own physicality and mental potential, and it is related to the notion of subjectivity, which is expressed by freedom and functioning autonomy of persons with disabilities in various life spheres. This includes the possibilities to play different social roles related to cultural patterns and their implementation, e.g. a student, a worker, a parent, a spouse, etc. Therefore, the issue incorporates theoretical and empirical texts on the matters of subjectivity and identity of persons with disability, referring to, among other things, such activities as education, work, or participation in the broadly understood culture.
Access status: Restricted ,
Wykorzystanie geoprzetwarzania w analizach lokalizacji zbiorników małej retencji wodnej
(Data obrony: 2015-03-30) Dudek, Magdalena
Wydział Geodezji Górniczej i Inżynierii Środowiska