Autor: Jasiński, Jan - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Gry i ćwiczenia terenowe dla organizacyj młdzieży hufców przyspos. wojskow. oraz szkół powszechnych i Srednich : podręcznik do nauki języka polskiego dla II klasy gimnazjalnej
Autorzy:: Jasiński, Jan.
Data publikacji:: 1942
Wydawca:: Palestyna : Komisja Wyszkoleniowo-Wydawnicza Dowództwa APW
Tematy:: 2 Korpus Polski wydawnictwa wojskowe 1943-1945 r.
Opis:: Przedruk wyd. Poznań 1938.
Bibliogr.
Dostawca treści:: Bibliografia CBW

Książka

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Skocz do pozycji: 2.

Tytuł:: On the Audibility of Electric Guitar Tonewood
Autorzy:: Jasiński, Jan
Oleś, Stanisław
Tokarczyk, Daniel
Pluta, Marek
Powiązania:: https://bibliotekanauki.pl/articles/2097700.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: electric guitar
tonewoods
spectral analysis
instrument timbre
exotic woods
guitar tone
Opis:: Electric guitar manufacturers have used tropical woods in guitar production for decades claiming it as beneficiary to the quality of the instruments. These claims have often been questioned by guitarists but now, with many voices raising concerns regarding the ecological sustainability of such practices, the topic becomes even more important. Efforts to find alternatives must begin with a greater understanding of how tonewood affects the timbre of an electric guitar. The presented study examined how the sound of a simplified electric guitar changes with the use of various wood species. Multiple sounds were recorded using a specially designed test setup and their analysis showed differences in both spectral envelope and the generated signal level. The differences between the acoustic characteristics of tones produced by the tonewood samples explored in the study were larger than the just noticeable differences reported for the respective characteristics in the literature. To verify these findings an informal listening test was conducted which showed that sounds produced with different tonewoods were distinguishable to the average listener.
Źródło:: Archives of Acoustics; 2021, 46, 4; 571-578
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Waste as substrates for agricultural biogas plants : A case study from Poland
Autorzy:: Czekała, Wojciech
Pulka, Jakub
Jasiński, Tomasz
Szewczyk, Piotr
Bojarski, Wiktor
Jasiński, Jan
Powiązania:: https://bibliotekanauki.pl/articles/2203541.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: biofuels
biogas plant
circular economy
renewable energy
waste management
waste to energy
Opis:: Energy production from renewable sources is one of the main ways to fight against global warming. Anaerobic digestion process can be used to produce biogas containing methane. In the light of the growing demand for substrates, a variety of raw materials are required. These substrates should be suitable for anaerobic digestion, and processing them need to provide the desired amount of energy. This paper aims to discuss the agricultural biogas market in Poland, its current state, and the possibility of development during energy transformation, in particular in terms of using waste as a substrate for energy production. In February 2022, there were 130 agricultural biogas plants registered in Poland. On the other hand, in 2020, 4,409,054.898 Mg of raw materials were used to produce agricultural biogas in Poland. Among all the substrates used, waste played a special role. With the right amount of raw materials and proper management of a biogas plant, it is possible to produce electricity and provide stable and predictable heat supply. Bearing in mind the development of the Polish and European biogas markets, attention should be paid to ensure access to raw materials from which chemical energy in the form of biogas can be generated. Due to limited access to farmland and the increasing demand for food production, one should expect that waste will be increasingly often used for biogas production, especially that with high energy potential, such as waste related to animal production and the meat industry.
Źródło:: Journal of Water and Land Development; 2023, 56; 45--50
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Application of an ambisonic microphone for the measurements of room acoustic parameters
Autorzy:: Jasiński, Maciej
Żera, Jan
Powiązania:: https://bibliotekanauki.pl/articles/24201951.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: room acoustics
ambisonics
spatial impulse response
acoustical measurements
akustyka wnętrz
ambisonia
przestrzenna odpowiedź impulsowa
pomiary akustyczne
Opis:: The most commonly used measurement technique in room acoustics employs a single omnidirectional microphone for recording the room impulse response and further derivation of such acoustical parameters as T30, EDT, C50 or C80. Instead, ambisonic technology makes it possible to measure a spatial room impulse response. Ambisonics decomposes the signal from the spherical microphone array into spherical harmonics to shape the directivity. Ambisonics lets to go beyond basic acoustical parameters and allows to determine spatial features of a sound field at the measurement point. This study presents the comparison of fundamental acoustic parameters measured in the recording studio by an actual omnidirectional microphone and virtual omnidirectional microphones derieved from ambisonic microphones of the first and third order. The results show the usefulness of ambisonic technology in terms of assessing basic room parameters.
Źródło:: Vibrations in Physical Systems; 2022, 33, 3; art. no. 2022312
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Estimation of Asymmetry in Head Related Transfer Functions
Autorzy:: Jasiński, Maciej
Żera, Jan
Powiązania:: https://bibliotekanauki.pl/articles/2055229.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: acoustics
sound processing
virtual reality
spatial sound
Head Related Transfer Functions
Opis:: The individual Head-Related Transfer Functions (HRTFs) typically show large left-right ear differences. This work evaluates HRTF left-right differences by means of the rms measure called the Root Mean Square Difference (RMSD). The RMSD was calculated for HRTFs measured with the participation of a group of 15 subjects in our laboratory, for the HRTFs taken from the LISTEN database and for the acoustic manikin. The results showed that the RMSD varies in relation to the frequency and as expected is small for more symmetrical HRTFs at low frequencies (0.3÷1 kHz). For higher frequency bands (1÷5 kHz and above 5 kHz), the left-right differences are higher as an effect of the complex filtering caused by anatomical shape of the head and the pinnae. Results obtained for the subjects and for data taken from the LISTEN database were similar, whereas different for the acoustic manikin. This means that measurements with the use of the manikin cannot be considered as perfect average representation of the results obtained or people. The method and results of this study may be useful in assessing the symmetry of the HRTFs, and further analysis and improvement of how to considered the HRTFs individualization and personalization algorithms.
Źródło:: International Journal of Electronics and Telecommunications; 2022, 68, 2; 193--200
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki