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Wyświetlanie 1-15 z 19
Tytuł:
Economic analysis of implementing VMI model using game theory
Autorzy:
Stehel, Vojtěch
Vochozka, Marek
Kliestik, Tomas
Bakes, Vladimir
Powiązania:
https://bibliotekanauki.pl/articles/19090921.pdf
Data publikacji:
2019
Wydawca:
Instytut Badań Gospodarczych
Tematy:
VMI
game theory
sensitivity analysis
Opis:
Research background: The article deals with implementing VMI between the supplier and customer. To assess whether the system will be implemented, the evolution game theory is used. The contribution is based on the limitations of the study of the evolutionary game theory approach to modelling VMI policies (Torres et al., 2014) and its later extension, The evolutionary game theory approach to modelling VMI policies (Torres & García-Díaz, 2018). It aims is to complement the studies and provide a comprehensive picture of the issue. Purpose of the article: The main objective of the contribution is to respond to the question whether the VMI system will be introduced between the supplier and customer. Methods: In the first phase, the matrix is analysed from the point of view of the game meaning and its limit parameters. The limit parameters are set taking into account the economic reality. The only examined states of the matrix are those where the result is not obvious. For the purposes of the contribution, we work with a 5-year period. A new software capable of calculating evolutionary focus and their stability is created. Sensitivity analysis is carried out for the individual parameters that affect the system behaviour. Findings & Value added: Value added is a complex description of the system and complementation of previous studies in this field. VMI is confirmed. The results obtained can be used for practical management, so that the managers are able to identify what the actual costs are and what the probability of introducing the system is. At the same time, they can identify the parameters that can be influenced by them and observe their impact on the shift of the system introduction probability.
Źródło:
Oeconomia Copernicana; 2019, 10, 2; 253-272
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tricopter vibration analysis
Autorzy:
Popardovský, Vladimír
Ferenčák, Marek
Kriš, Tomáš
Tomaštík, Miroslav
Novotný, Lukáš
Powiązania:
https://bibliotekanauki.pl/articles/1840875.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
multicopter
vibrations
Fourier transform
vibration analysis
MATLAB
multikopter
drgania
transformata Fouriera
analiza drgań
Opis:
Unmanned Aerial Vehicle (UAV) is exposed to various types of stress during flight. One of the most significant negative influences is the vibrations produced by the rotating parts. If we assume a UAV of the multicopter type, it is a stress of the whole structure by vibrations produced by propulsion units, which are placed on symmetrically distributed arms. The propulsion unit consists of an electric-propeller assembly, with the propeller being the largest source of vibration. This is due to the uneven distribution of the mass with respect to its axis of rotation. In addition to the propeller, the rotating part is also the electric motor itself, although the electric motor contributes much less to the total vibrations than the propeller. For this reason, it is necessary to balance the propeller first statically and then dynamically balance the entire drive unit (engine + propeller). Our work is focused on vibration diagnostics of an experimental tricopter in order to optimize the power units - to produce the smallest possible vibrations.
Źródło:
Diagnostyka; 2021, 22, 3; 67-72
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tricopter vibration analysis
Autorzy:
Popardovský, Vladimír
Ferenčák, Marek
Kriš, Tomáš
Tomaštík, Miroslav
Novotný, Lukáš
Powiązania:
https://bibliotekanauki.pl/articles/1840857.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
multicopter
vibrations
Fourier transform
vibration analysis
MATLAB
multikopter
drgania
transformata Fouriera
analiza drgań
Opis:
Unmanned Aerial Vehicle (UAV) is exposed to various types of stress during flight. One of the most significant negative influences is the vibrations produced by the rotating parts. If we assume a UAV of the multicopter type, it is a stress of the whole structure by vibrations produced by propulsion units, which are placed on symmetrically distributed arms. The propulsion unit consists of an electric-propeller assembly, with the propeller being the largest source of vibration. This is due to the uneven distribution of the mass with respect to its axis of rotation. In addition to the propeller, the rotating part is also the electric motor itself, although the electric motor contributes much less to the total vibrations than the propeller. For this reason, it is necessary to balance the propeller first statically and then dynamically balance the entire drive unit (engine + propeller). Our work is focused on vibration diagnostics of an experimental tricopter in order to optimize the power units - to produce the smallest possible vibrations.
Źródło:
Diagnostyka; 2021, 22, 3; 67-72
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The political party system in Slovakia in the era of Mečiarism. The experiences of the young democracies of central European countries
Autorzy:
Barański, Marek
Powiązania:
https://bibliotekanauki.pl/articles/1628419.pdf
Data publikacji:
2020-12-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Slovakia
Vladimir Mečiar
party system
democracy
political party
Opis:
This article aims to reconstruct the functioning of political parties that was present during the establishment of the foundations of the democratic system and political practice, from the “Velvet Revolution” to the creation of a competitive party system with a dominant political party – Movement for Democratic Slovakia (HZDS) set up by Vladimir Mečiar; who served as prime minister in the years 1993–1998 (including a hiatus in 1994) greatly affecting the state internal and international policy, and held the post of the sole chairman of the party until its dissolution. V. Mečiar’s rule was marked by the interweaving of the elements of the wave of democratization with the reverse wave of de-democratization. The pro-democratic and undemocratic tendencies displayed by Mečiar were determined – apart from objective factors – by the personality traits of the prime minister: his commanding and charismatic leadership style, authoritarianism, making public decisions in a ruthless manner devoid of impartiality, or violations of democratic norms and values. Apart from its scientific purpose, this article may also fulfil a practical function allowing the possibility of using the research findings in social practice/politics.
Źródło:
Eastern Review; 2020, 9; 33-48
1427-9657
2451-2567
Pojawia się w:
Eastern Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Martin Šuvada, Vladimír Slavík – Koncentrované rómske zoskupenie v meste: Pripodavá štúdia Humenné a Rimavská Sobota, Univerzita Komenského, Prírodovedecká fakulta, Katedra humánnej geografie a demografie, Bratislava 2016, 104 ss.
Autorzy:
Sobczyński, Marek
Powiązania:
https://bibliotekanauki.pl/articles/684324.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Opis:
-
Źródło:
Studia z Geografii Politycznej i Historycznej; 2018, 7; 297-299
2300-0562
2450-0127
Pojawia się w:
Studia z Geografii Politycznej i Historycznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of the climate in complex treatment of respiratory disease
Autorzy:
Pohanka, Vladimir
Pohanka, Marek
Fleischer, Peter
Bičárová, Svetlana
Powiązania:
https://bibliotekanauki.pl/articles/635133.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
climatotherapy
heliotherapy
respiratory disease
choroby układu oddechowego
leczenie światłem słonecznym
talassoterapia
Opis:
The climatotherapy associated with favourable environmental conditions is an important factor for improvement human health. In this paper, we had presented results from selected studies carried out in Srobar´s institute for tuberculosis and respiratory dieseases Dolný Smokovec in the High Tatras. Srobar´s institute was for many years specialised health care institution providing complete in patients and outpatients terapeutical and preventive care for children of 0 - 18 years of age. Cooperation all together with Pediatric clinic St Andrea hospital of Universita La Sapienza in Roma performed in 2002 all together with Rabka Zdroj Institute and Motol hospital Prague,showed interesting results. We had found–out that children suffered respiratory allergy and asthma had lower level of values of MEF25 (middle forced respiratory flow on the level of 25% of peak respiratory flow) at the first day of hospitalization in opposite to the values after one-week treatment. On the other hand, the level of FeNO concentration (forced expired nitrogen monoxide) was significantly lower after one-week treatment. Children ´s without chronic allergy and asthma, values of MEF 25 and FeNO were unchanged.
Źródło:
Zdrowie Publiczne i Zarządzanie; 2012, 10, 1; 9-12
2084-2627
Pojawia się w:
Zdrowie Publiczne i Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Adjustment of the Tundish Water Model of Continuous Casting
Autorzy:
Blaško, Peter
Bulko, Branislav
Petrík, Jozef
Demeter, Peter
Socha, Vladimir
Hanáková, Lenka
Palfy, Pavol
Solc, Marek
Vasilňáková, Andrea
Powiązania:
https://bibliotekanauki.pl/articles/2048879.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
steel
tundish
water model
continuous casting
statistical methods
Opis:
Whereas approximately 96.3% of the steel produced worldwide is made by continuous casting, great emphasis is put on the superior efficiency of this process. The water model of the tundish and mathematical modeling is often used for the simulation of the steel flow during continuous casting. The experiments were performed on a model of the tundish with two outlets, at two casting speeds (0.8 m.s-1 and 1.2 m.s-1). Eight setups of the tundish were evaluated, which differed in the design of the dams (with or without drainage holes), in their distance from the center of the tundish, and their height. The contribution of the work is the analysis of phenomena in the tundish water model in conditions of repeatability (ten repetitions). The goal is to find the setup providing the most symmetrical flow, with the minimum difference in the residence times Δτ on the two outlets. Taking into account the results obtained at both casting speeds, the most preferred is setup 2 with the 87 mm high dams placed 587 mm from the center of tundish (Δτ = 0.5). The setup 3 (Δτ = 8.25) appears to be the least appropriate. The higher the casting speed, the higher the number of unsuitable arrangements.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 1; 97-104
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustic Emission and Infrared Thermography Study of Low Strain Tensile Behaviour of AISI 304L Stainless Steel
Autorzy:
Sapietová, Alžbeta
Raček, Marek
Dekýš, Vladimir
Sapieta, Milan
Sága, Milan
Šofer, Pavel
Powiązania:
https://bibliotekanauki.pl/articles/27313863.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
acoustic emission
infrared thermography
stainless steel
tensile deformation
Opis:
In-situ study of deformation behaviour and mechanisms occurring during early stages of deformation is of a great practical importance. Low stacking fault energy materials, as is the case of AISI 304L, show non-linear deformation characteristics way below the bulk yield point. Shockley partial dislocations, formation of stacking faults respectively, resulting in creation of shear bands and ε-martensite transformation are the mechanisms occurring in the low strains in the studied steel. Acoustic emission and infrared thermography have been used in this study to investigate the deformation kinetics at the low strain stages of slow strain rate tensile tests. Acoustic emission cumulative energy together with the tracking of specimen maximum temperature have been found to be very useful in-situ techniques both supplementing each other in the sense of the sensitivity to different mechanisms. Mechanical, acoustic emission and infrared thermography results are discussed in detail with respect to potential occurred mechanism.
Źródło:
Archives of Metallurgy and Materials; 2023, 68, 2; 463--468
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 19

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