PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 5

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available remote Comparison of Methods for Measuring Reverberation Time
Melnyk M., Kernytskyy A., Lobur M.
Machine Dynamics Research
|
2018
|
Vol. 42, No. 2
27--34
EN
The article presents the results of an experimental evaluation of the reverberation time of the lecture auditorium in the Lviv Polytechnic National University. For their further analysis, a sub-system of batch processing of audio files with a registered response of the room for excited impulse noise has been developed. To determine the bypass signal, Schroeder method was used, and the least squares method was improved by pre-processing of the signal using the MM method. The influence of the number of neighboring points of the MM method on the accuracy of the reverberation time by the least squares method is investigated. A comparison of the Schroeder method and the least squares method is made, which makes it possible to establish that Schroeder method is more precise. The average error of this method for 6 experiments against the Dirac system was 0.02 sec, whereas for the least squares method it was 0.06 seconds. The developed subsystem of the batch analysis of the registered response of the premises for pulsed noise makes it possible to increase the speed and efficiency of processing the results of experiments.
2
Content available remote Development of СAD Structure for Design of Aerostatic Complex
Melnyk M., Kernytskyy A., Stefanskyy A.
Machine Dynamics Research
|
2013
|
Vol. 37, No. 3
61-65
EN
To solve the problem of AC aerodynamically shaped envelope design the integrated system of design was developed that allows minimizing human involvement in routine operations of modeling and calculation of design parameters.
3
Content available remote Development of the Linguistic Ontology Construction Method on the Base of Structured Electronic Encyclopedic Resource
Teslyuk V., Mykhailiuk A., Melnyk M., Denysyuk P.
Machine Dynamics Research
|
2013
|
Vol. 37, No. 3
89-97
EN
The method for automated formation of the ontological knowledge base software tools construction by converting of the structured encyclopedic resource to the appropriate ontology objects has been presented in the article. The developed method is based on the algorithm and model from the Petri networks theory.
4
Content available remote Computer-Aided Design of MEMS at System Level
Teslyuk V., Al Omari T., Alshavabkekh H., Denysyuk P., Melnyk M.
Machine Dynamics Problems
|
2007
|
Vol. 31, No. 3
92-104
EN
MEMS is an extraordinarily scientific devices (Luchinin, 1999; Severov et al., 1998; Klimov et al., 1999). Their effective design is not possible without implementation of software, new mathematical models and methods, methodology and algorithms for the automated design. The given paper is devoted to development of methodology for the computer-aided design of MEMS at system level. In the offered paper the methodology is developed for the automated MEMS design at a system level which is based on the use of basic elements MEMS, building alternative decision tree and on its basis generation of alternative decisions set, usage of method of reduction of power of alternative decisions set which takes into account specific MEMS and parameters of requirement specification and decision of the formulated multicriterion optimization task for determination of optimal structure of integrated device. The offered method will allow designing MEMS automatically more efficienty.
5
Przyrząd do zdalnej kontroli natężenia pola elektrycznego w instalacjach przemysłowych
Sopruniuk P., Pohrebennyk W., Melnyk M.
Śląskie Wiadomości Elektryczne
|
2000
|
R. 7, Nr Specjalny (29)
55--56
PL
W artykule przedstawiono metodę i przyrząd do zdalnej kontroli natężenia pola elektrycznego w instalacjach przemysłowych i elektroenergetycznych sieciach zasilania. Przyrząd jest wielofunkcyjny i pozwala na zdalną kontrolę instalacji prądu stałego i przemiennego pod napięciem oraz na rozpoznawanie kategorii zewnętrznego pola elektrycznego. Omawiany przyrząd jest technicznie nieskomplikowany, posiada mały ciężar i niewielkie rozmiary, posiada regulowaną czułość, pobiera niewielką moc, jest zasilany z akumulatora, ma dwa rodzaje indykacji.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.