Autor: Buszman, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Examination of acoustic wave propagation in real conditions
Autorzy:: Buszman, K.
Powiązania:: https://bibliotekanauki.pl/articles/332455.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: Elastic waves are the primary transmission medium in water environment. Acoustic waves are not as strongly attenuated as electromagnetic waves. Sound is used in all kinds of underwater communication systems and sonar devices. Starting from a simple single beam sonar to multi-beam hydrographic echosounders. Thus the issue of the phenomenon of sound propagation in water is the base for understanding the work of underwater hydroacoustic systems[1].
Źródło:: Hydroacoustics; 2013, 16; 11-18
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Investigation of the underwater noise associated with remotely-operated vehicles
Autorzy:: Buszman, K.
Mironiuk, W.
Powiązania:: https://bibliotekanauki.pl/articles/134926.pdf
Data publikacji:: 2018
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: hydroacoustic
remotely-operated vehicles
spectrum
one-third-octave
object identification
passive method
shallow water
Opis:: There is increasing demand for various types of submersible and floating remotely-operated vehicles which have herein been studied with respect to the threats posed by these kinds of objects. Local physical field disorder analyses have demonstrated the possibility of detecting and classifying objects based on hydroacoustics. Hydroaocoustic analysis results are presented as narrowband and One-Third-Octave spectra of different types of remotely-operated vehicles. Investigations were performed using an underwater measuring system located in very shallow water in a coastal zone characterized by conditions considered as poor for sound propagation.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 54 (126); 129-132
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The multi-influence passive module for underwater environment monitoring
Autorzy:: Gloza, I.
Buszman, K.
Powiązania:: https://bibliotekanauki.pl/articles/331714.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: The threats to the operation of a ship close to the coast and harbor can be significantly different to those of deep-water operation. It is obvious that any operation in this environment requires a good understanding of how the ship’s signatures behave. Quite a few different systems exist which can detect and track underwater moving targets. The most practical systems use underwater passive detectors. Therefore we often install in such environment multi-sensor measuring device to verify the whole situation. Designed by the Polish Naval Academy mobile multi-sensor module serves such purpose. This module consists of acoustic, magnetic, electric, seismic and pressure sensors fitted to the nonmagnetic tripod. This makes possible to measure signatures to high degree of accuracy in a variety of environments in real time.
Źródło:: Hydroacoustics; 2011, 14; 47-54
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Passive hydroacoustic method of detection and tracking object moving on the sea surface and floating in the depth
Autorzy:: Szymczak, W.
Buszman, K.
Powiązania:: https://bibliotekanauki.pl/articles/332439.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: passive hydroacoustic
hydrophone array
direction of arrival calculation
Opis:: The main goal of the paper is to present passive, autonomous system to observe objects moving on the sea surface and floating in the depth prepared to work in very shallow water. Complete system will be described starting from hardware realization finalizing on configuration of sensors and presentation of algorithms implemented in prepared to this project software ( alarm types, setting parameters responsible for alarm generation etc.). Finally example of object detection will be presented concentrating on remotely operate vehicles ROV – seabotix and combustion motorboat. At a given point of discussion, stability of algorithms eliminating the occurrence of false alarms will be presented.
Źródło:: Hydroacoustics; 2017, 20; 173-178
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Signals parametrization method of sailing vessels
Autorzy:: Buszman, K.
Gloza, I.
Powiązania:: https://bibliotekanauki.pl/articles/332764.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: hydroacoustic
pressure
magnetic
multi-influence module
database
Opis:: The expansion of maritime transport is directly connected with increased risk of the appearance of unidentified vessels in the approaches to ports, wind farms, and other sensitive places in the water-body. Creating a parameters database of sailing objects, based on recorded dynamic variations of different physical fields with the specified aims of increasing security within the strategic offshore areas.
Źródło:: Hydroacoustics; 2016, 19; 27-36
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Examination of the co-operation between echosounder and motion sensor during sea trials
Autorzy:: Szymczak, W.
Buszman, K.
Powiązania:: https://bibliotekanauki.pl/articles/332836.pdf
Data publikacji:: 2009
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: hydroacoustics
echosounders
sea trials
Opis:: Sea trials with parametric echosounder SES-2000 Compact needs precise information about sounded area of the seafloor. Because of narrow beam both in horizontal and vertical surface each change of antenna position have high influence for results and analyze of measured data. Vessel has to be equipped with a special device, such as multibeam echosounder, to obtain more information about seafloor sounding which is an addition for basic measurements units. Information about bottom topography, from where sounding pulse comes, may give many useful data necessary to correct analyze by echosounder user. There are also parameters such as roll, pitch and heave, which have to be complied. These variables have an influence for shape and echo level. The last parameter analyzed in this article is a difference between vessels heading and bearing. This information comes from heading sensor and GPS receiver.
Źródło:: Hydroacoustics; 2009, 12; 217-226
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Laboratory model of high frequency sonar
Autorzy:: Buszman, K.
Szymczak, W.
Powiązania:: https://bibliotekanauki.pl/articles/331519.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: laboratory model
sonars
hydroacoustic
Opis:: This article contains the construction and laboratory application of high frequency sonar model. In view of working in laboratory conditions, they must be fulfilled succeeding parametric cases: very narrow beam, low level of side lobes and low acoustic power of transmitted impulse sounding. When all of these conditions are fulfilled, it makes possible the explanation to students some terms like depth, angular resolution and making clear, that water is the best environment to acoustic waves transmission. Furthermore, there is used automatic component, namely rotary antenna, which make possibility to precision area scanning.
Źródło:: Hydroacoustics; 2008, 11; 39-46
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Sound intensity distribution as an underwater acoustic investigation process
Autorzy:: Gloza, I.
Buszman, K.
Powiązania:: https://bibliotekanauki.pl/articles/331824.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: The subject matter of this research is underwater noise generated by sailing vessels in shallow seas. The classical method for measurement of underwater noise involves measuring effective acoustic pressure and fits for purposes in the free far field of the source. Despite its popularity, the method does have some significant limitations. Investigations of underwater noise generated by moving vessels in shallow seas are almost solely confined to the near field. In addition, this has a high level of interference and numerous wave reflections. This is why, as well as using the acoustic pressure measurement method, a complementary method for measuring acoustic wave intensity is used increasingly often. The measurements were taken using an underwater measurement module equipped with a set of detectors. Submerged at 20m, the object moved along a designated trajectory at a preset speed (as determined by the parameters of the ship’s machinery). Because all of the on-board equipment generates ship-specific noise, additional measurements were taken of the vibrations generated by selected ship’s machines to identify those sources. If known, the distribution of the acoustic field from vessels helps to identify the characteristic frequencies generated by the ship’s equipment and machinery. The paper includes a comparison of acoustic wave intensity and acoustic pressure measurements taken under the same ambient conditions and over the same period.
Źródło:: Hydroacoustics; 2014, 17; 57-62
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Laboratory to measure directivity characteristics of arrays
Autorzy:: Grelowska, G.
Szymczak, W.
Buszman, K.
Powiązania:: https://bibliotekanauki.pl/articles/331630.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: laboratory station
beam sonar’s
hydrophone
Opis:: The paper presents the laboratory station to measure directivity characteristics of narrow beam sonar's and echo sounder's antennas. It will be describe method of collecting samples from surface, unit used to precise positioning receiving hydrophone, construction and use of rack to direct main beam in exact direction. Additionally we show station to measure drift of the sea bottom impedance.
Źródło:: Hydroacoustics; 2008, 11; 381-388
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The one – third – octave spectrum as a method of vessel identification
Autorzy:: Gloza, I.
Józwiak, R.
Buszman, K.
Powiązania:: https://bibliotekanauki.pl/articles/331961.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: The subject of the examinations carried out is hydroacoustic noise in coastal zones. Under these conditions natural noise and the noise from moving vessels affect each other, as well as interference from industrial infrastructure located close to the coast. Both natural noise and noise caused by human activity affect the detection and identification of noise sources in these conditions. Experiments have been performed by the mobile measuring module in the Gulf of Gdansk. This showed that it can extract spectrum components, based on the results of underwater noise. These components allow the detection of moving objects. The collected database of measurements enabled the comparison of one-third-octave spectra of three different ships. The components specific to the type of vessel could extracted as a result of comparison. Consequently one of the three tested vessels could be identified.
Źródło:: Hydroacoustics; 2014, 17; 63-68
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Acoustic analysis of remote-controlled surface and underwater vehicles
Autorzy:: Buszman, K.
Szymczak, W.
Mironiuk, W.
Powiązania:: https://bibliotekanauki.pl/articles/332205.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Akustyczne
Tematy:: hydroacoustic
remotely operated vehicles
signatures
Opis:: Technological progress has made the use of remotely controlled objects moving on the surface and underwater, for a variety of purposes, become extraordinarily popular. The widespread use of such vehicles enables unauthorized use. Therefore, knowledge of the hydroacoustic field characteristics makes it possible to identify by passive underwater observation systems. The paper presents the results of narrowband and one-third-octave frequency analyzes of remote-controlled surface and underwater vehicles. The change in sound pressure was recorded for vehicles moving a short distance away from the hydrophone. The research was carried out in difficult conditions, propagation, at a small depth in the coastal zone.
Źródło:: Hydroacoustics; 2017, 20; 29-34
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Composition of data visualisations by sub-bottom profiler and multibeam echosounder in MATLAB
Autorzy:: Grelowska, G.
Kozaczka, E.
Buszman, K.
Powiązania:: https://bibliotekanauki.pl/articles/331951.pdf
Data publikacji:: 2010
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: This paper contains description of procedure, which was elaborated in a numerical computing environment Matlab. The result of these procedures is a graphical composition of images obtained from two different hydroacoustic devices. It enables to compare different types of visualisations for the same geographical position and simultaneous work with graphical representation of all data types.
Źródło:: Hydroacoustics; 2010, 13; 101-108
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Tracking Underwater Noise Sources with the Use of a Passive Method
Autorzy:: Gloza, I.
Buszman, K.
Józwiak, R.
Powiązania:: https://bibliotekanauki.pl/articles/1400098.pdf
Data publikacji:: 2013-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 43.30.Nb
Opis:: It is possible to track a source of noise by determining the intensity of sound that informs about the sound energy flow direction. One of the methods of determining the sound intensity of acoustic signals is the so-called gradient method in which the pressure is measured with the use of two hydrophones placed close to each other. Tetrahedral antenna consists of four hydrophones spaced at regular tetrahedron vertices so that distances between hydrophones are the same. The tetrahedral antenna determines six virtual points in the middle of each edge and allows using sound intensity calculation algorithm to determine the noise source bearing. In our experiment, the antenna was located 23 meters below the sea surface and a source of noise was moving over it. The object that was moving along a straight line with a specific course was equipped with a GPS receiver. This allowed comparison of the obtained targeting results with the real track of moving object. The paper presents the object tracking algorithm which was implemented in the MATLAB environment as well as some of the results of research carried out on passive source noise tracking.
Źródło:: Acta Physica Polonica A; 2013, 123, 6; 1090-1093
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Biodegradowalny polimerowy system uwalniania radiouczulacza - badania in vitro
Bodegradable polymeric system releasing radiosensitizer - the in vitro studies
Autorzy:: Buszman, A.
Kasperczyk, J.
Jarząbek, B.
Stokłosa, K.
Smola, A.
Powiązania:: https://bibliotekanauki.pl/articles/970921.pdf
Data publikacji:: 2010
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:: poliestry alifatyczne
systemy kontrolowanego uwalniania leków
glejak mózgu
metronidazol
aliphatic polyesters
drug delivery system
brain glioma
metronidazole
Opis:: W pracy przedstawiono wyniki badań uwalniania radiouczulacza metronidazolu z jednowarstwowych oraz trójwarstwowych matryc kopolimeru glkolidu z laktydem do sztucznego płynu mózgowo rdzeniowego ACFs. Przeprowadzono analizę mikrostruktury łańcuchów polimerowych w oparciu o spektroskopię magnetycznego rezonansu jądrowego. Badanie uwalniania leku prowadzono w systemie dynamicznym z regularną wymianą buforu we fiolkach poddanych wytrząsaniu. Ekstrakty analizowano metodą spektrometrii UV-VIS. Równolegle prowadzono badania degradacji matryc z lekiem pod kątem oceny zmian w mikrostrukturze łańcucha polimerowego. Badania wykazały znacznie szybszą degradację matryc wykonanych z kopolimeru glikolidu z D,L-laktydem w porównaniu z matrycami z kopolimeru glikolidu z L-laktydem. Ponadto wykazano że opłaszczenie matrycy zawierającej lek polimerem bez leku (matryce trójwarstwowe) zapobiega nagłemu wyrzutowi leku z powierzchni w pierwszych dniach uwalniania.
In this paper the results of radiosensitizer metronidazole release investigation from mono- and triple-layered copolymeric matrices in artificial cerebro- spinal fluid solution (ACFs) are presented. The analysis of polymeric chain microstructure by the NMR has been conducted. Drug release study was performed in the dynamic system with regular buffer exchange in constantly stirred glass ampoules. The extracts were analyzed by the UV-VIS spectrometry. Drug carrying matrices degradation research were conducted to evaluate possible changes in polymeric chain microstructure. The results showed that matrices containing poly(glycolide-co-D,L-lactide) demonstrate higher degradation rate than matrices containing poly(glycolide-co-L-lactide). It has been proved that drug carriers coated with drug-free polymer (triplelayered matrices) prevents from burst effect.
Źródło:: Engineering of Biomaterials; 2010, 13, no. 99-101; 67-71
1429-7248
Pojawia się w:: Engineering of Biomaterials
Dostawca treści:: Biblioteka Nauki

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