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Tytuł:
Cyber-physical systems technologies as a key factor in the process of Industry 4.0 and smart manufacturing development
Autorzy:
Zubrzycki, Jarosław
Świć, Antoni
Sobaszek, Łukasz
Kovac, Juraj
Kralikova, Ruzena
Jencik, Robert
Smidova, Natalia
Arapi, Polyxeni
Dulencin, Peter
Homza, Jozef
Powiązania:
https://bibliotekanauki.pl/articles/1956036.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
Industry 4.0
CPS
IoT
machine monitoring
monitoring maszyn
Opis:
The continuous development of production processes is currently observed in the fourth industrial revolution, where the key place is the digital transformation of production is known as Industry 4.0. The main technologies in the context of Industry 4.0 consist Cyber-Physical Systems (CPS) and Internet of Things (IoT), which create the capabili-ties needed for smart factories. Implementation of CPS solutions result in new possibilities creation – mainly in areas such as remote diagnosis, remote services, remote control, condition monitoring, etc. In this paper, authors indicated the im-portance of Cyber-Physical Systems in the process of the Industry 4.0 and the Smart Manufacturing development. Firstly, the basic information about Cyber-Physical Production Systems were outlined. Then, the alternative definitions and different authors view of the problem were discussed. Secondly, the conceptual model of Cybernetic Physical Production System was presented. Moreover, the case study of proposed solution implementation in the real manufacturing process was presented. The key stage of the verification concerned the obtained data analysis and results discussion.
Źródło:
Applied Computer Science; 2021, 17, 4; 84-99
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EEG mapping process of decision making
Analiza procesu podejmowania decyzji z wykorzystaniem EEG
Autorzy:
Majtán, Štefan
Šlosár, Robert
Štetka, Peter
Powiązania:
https://bibliotekanauki.pl/articles/591058.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Consumer
Decision
Decision making
EEG
Decyzja
Konsument
Podejmowanie decyzji
Opis:
Decision making is one of the biggest mysteries of human brain and behavior. Every decision is a choice that, in principle, could have gone differently. It is a fork on the road of decision making. Standing before that choice, you can choose to go one way or the other, but after you have chosen, you cannot go back. Every human being knows very well what it feels like to make a decision. But what we generally do not realize is why we make choices we make. We cannot identify the sources of our decisions. Especially when they are the everyday choices we make like as consumers. We offer in this paper the way of better understanding of decision making process using the EEG. In this paper we try to identify what happened in consumer brain during each step of decision making process.
Podejmowanie decyzji jest jedną z największych tajemnic ludzkiego mózgu i zachowania. Każda decyzja to wybór, który w zasadzie może różnie przebiegać. Stojąc przed takim wyborem, można wybrać kierunek w jedną lub drugą stronę, ale po podjęciu tej decyzji nie można już zawrócić. Każdy człowiek dobrze wie, jakie to uczucie, gdy podejmuje się decyzje. Ale nie zdajemy sobie sprawy, dlaczego dokonujemy takich, a nie innych wyborów. Nie możemy również zidentyfikować źródła naszych decyzji. Zwłaszcza gdy są to codzienne wybory, których dokonujemy jako konsumenci. W niniejszym opracowaniu ukazujemy sposób lepszego zrozumienia procesu podejmowania decyzji z wykorzystaniem EEG. W artykule staraliśmy się ustalić, co dzieje się w mózgu konsumenta podczas każdego etapu procesu decyzyjnego.
Źródło:
Studia Ekonomiczne; 2016, 281; 91-103
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient (j,k)-domination
Autorzy:
Rubalcaba, Robert
Slater, Peter
Powiązania:
https://bibliotekanauki.pl/articles/743411.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
efficient domination
multiple domination
Opis:
A dominating set S of a graph G is called efficient if |N[v]∩ S| = 1 for every vertex v ∈ V(G). That is, a dominating set S is efficient if and only if every vertex is dominated exactly once. In this paper, we investigate efficient multiple domination. There are several types of multiple domination defined in the literature: k-tuple domination, {k}-domination, and k-domination. We investigate efficient versions of the first two as well as a new type of multiple domination.
Źródło:
Discussiones Mathematicae Graph Theory; 2007, 27, 3; 409-423
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy Controller for Simplified Model of Mobile Vehicle Steering Booster
Autorzy:
Koleda, Peter
Naščák, Ľubomir
Hrčková, Mária
Magdolinič, Róbert
Powiązania:
https://bibliotekanauki.pl/articles/2064614.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
automobile booster
fuzzy sets
fuzzy controller
speed control
Opis:
The article is aimed on the possibility of fuzzy control of an experimental device that represents the simplified model of automobile steering booster. The main part of model consists of a graphical unit illustrating the control of speed and supporting torque. Based on the structure of fuzzy controller, various counts and configurations of fuzzy sets were defined, whereby the relevant results were achieved by their application on controlled system.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 40--50
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Joint and Several Liability of Competition Law Infringers in the Legislation of Central and Eastern European Member States
Autorzy:
Miskolczi Bodnár, Péter
Szuchy, Robert
Powiązania:
https://bibliotekanauki.pl/articles/530385.pdf
Data publikacji:
2017-06-30
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
joint and several liability
maximum degree of liability
micro, small and medium-sized enterprises
full compensation
proportional reimbursement
direct or indirect purchasers and suppliers
ceilings of the liability of immunity recipients
Opis:
The study reviews the provisions of the Directive by, first, presenting its general rule – joint and several liability – and then its two exceptions, pointing out that albeit they contain similar solutions, these have different reasons in the case of leniency applicants obtained immunity from fines and small and medium-sized enterprises. The study examines whether the 11 CEE Member States prescribe joint and several liability, in principle, to cases where multiple persons cause harm jointly by an infringement of competition law. The study also analyses the position of an immunity recipient in national laws. During the examination, the study separates the position of the immunity recipient and the injured parties, as well as the position of the immunity recipient and other co-infringers, as is the case in the Directive. The study summarizes also national experiences with the implementation of the Damages Directive. It is a fact that the norms of the Directive have been implemented, and there is no deviation to jeopardize either the enforcement of claims for damages or the integrity of the internal market. Nevertheless, having established two separate exceptions, it would have been duly justified for the Commission to explain them in detail, considering their rules differ from each other. Noticeably, some CEE countries considered the difference unjustified and uniformly provided an opportunity for the co-infringer who compensated the harm of an injured party to submit a reimbursement claim against the immunity recipient and SMEs. Other CEE countries considered that they did not have the authority to do so. It would be worth reviewing the implementation of the exceptions to joint and several liabilities after a year, in conjunction with the issue of alternative dispute resolution. The study makes a proposal for an amendment of the Directive. Doctrinal views related to the SMEs exemption from joint and several liability draw attention to the fact that it is unfortunate if solutions designed in a relatively late stage of the legislative procedure do, in fact, later become a part of that directive. It would seem practical, for example, to declare that this exception shall be applied also to micro enterprises in relation to the compensation of harms caused by infringements of competition law. The Damages Directive requires, however, the implementation of this exception only with regard to small and medium-sized enterprises.
Źródło:
Yearbook of Antitrust and Regulatory Studies; 2017, 10(15); 85-110
1689-9024
2545-0115
Pojawia się w:
Yearbook of Antitrust and Regulatory Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Natural gas saving and emissions decrease in public health care sector – a case study
Ograniczenie zużycia gazu ziemnego i redukcja emisji w sektorze zdrowia publicznego – studium przypadku
Autorzy:
Mierka, Otto
Variny, Miroslav
Skalíková, Ingrida
Sámel, Peter
Kizek, Ján
Súth, Róbert
Nagy, Karol
Powiązania:
https://bibliotekanauki.pl/articles/396176.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
public building
health care sector
natural gas
emission
heat loss
budynek użyteczności publicznej
gaz ziemny
emisja
straty ciepła
Opis:
A study on natural gas saving and emissions decrease in the public health care sector is presented. The analyzed hospital complex belongs to the largest ones in Slovakia and uses both hot water and water steam for heating purposes. Visual steam system inspection revealed serious inefficiencies, including steam venting, missing pipelines insulation and obsolete steam sources with dysfunctional blow-down system. Defined experiment with stepwise steam appliances shutdown enabled quantification of excess natural gas consumption due to these inefficiencies. Measures proposed for the solution of this state are inexpensive, with a short payback period. The expected natural gas savings amount up to 3200 MWh/year, which represents roughly 50% of the total natural gas consumption in the hospital complex.
Niniejszy artykuł prezentuje studium przypadku na temat ograniczenia zużycia gazu ziemnego i emisji w sektorze zdrowia publicznego. Analizowany kompleks szpitalny należy do największych na Słowacji i używa do ogrzewania zarówno ciepłej wody użytkowej, jak i pary wodnej. Kompleks ten będzie w najbliższych latach poddany renowacji, włącznie z instalacją dystrybucji mediów. Analiza obecnego systemu i wynikające z niej zaproponowane sposoby na zaoszczędzenie energii oferują redukcję kosztów powiązanych z przyszłą inwestycją. Wizualna ocena systemu dystrybucji pary wodnej ujawniła poważne wady tego systemu, w tym w odpowietrzaniu systemu, uszkodzonej bądź brakującej izolacji rur, przestarzałych bojlerach parowych z niedziałającym systemem usuwania zanieczyszczeń. Eksperyment ze stopniowym wyłączaniem urządzeń parowych umożliwił ilościowe określenie nadmiaru zużycia gazu ziemnego spowodowanego wspomnianymi niedostatkami. Metodologia takiego eksperymentu jest uniwersalna i łatwa w zastosowaniu w jakimkolwiek innym budynku użyteczności publicznej gdzie podobny system pary wodnej jest w użyciu. Zaproponowane rozwiązania dla poprawy takiego stanu są niedrogie i z krótkim czasem zwrotu inwestycji. Zastosowanie nowej izolacji rur, naprawa odwadniaczy oraz naprawa zaworów redukcyjno-regulacyjnych do odpowietrzania pary w odpowietrznikach są przedmiotem rozważań. Oczekiwana redukcja zużycia gazu ziemnego wynosi do 3200 MWh/rok, co stanowi około 50% rocznego zapotrzebowania tego gazu w kompleksie szpitalnym. Ocena środowiskowa zaproponowanych zmian pozwala oczekiwać redukcji emisji dwutlenku węgla na poziomie 644 ton rocznie oraz tlenków azotu na poziomie 0.75 ton rocznie.
Źródło:
Civil and Environmental Engineering Reports; 2019, 29, 1; 119-127
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of the tire building drum for passenger tires using the TRIZ methodology
Autorzy:
Števko, Peter
Kohár, Róbert
Čechmánek, Damián
Medvecká, Denisa
Powiązania:
https://bibliotekanauki.pl/articles/27315563.pdf
Data publikacji:
2023
Wydawca:
STE GROUP
Tematy:
building tire drum
passenger tires
TRIZ methodology
optimization of design
engineering simulation
Opis:
This study deals with the research on the impact of the construction of a tire-building drum on the selected parameters of a passenger tire. The introductory part of the study deals with a comprehensive analysis of the production process and factors that affect the quality of the final tire product during production. The content of this analysis is also the naming of problematic parts and their subsequent influence on the resulting parameters of a passenger tire. The core of the study is an optimization design for improving the construction of the tire-building drum. The world-renowned TRIZ methodology was applied to achieve the desired improvement results. Using the TRIZ methodology, the technical system was analysed, identified problematic parts, and defined the technical and physical contradictions and proposed possibilities for their removal. The systematic approach to the solution of the task has generated options for the right solution and possible optimization by reducing the weight of individual parts of the tire-building drum. During analysis, simulations of the deformation and total stress will be available before and after optimization. The work's conclusion describes the results of the simulation and the development process for the experimental testing possibilities of the optimized equipment. The study output is also a systematic procedure for testing the technical system, which can help designers design and optimize some parts of similar technical systems.
Źródło:
Management Systems in Production Engineering; 2023, 3 (31); 261--272
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Origins of Multidimensional Class Locations in Hungary
Autorzy:
Róbert, Péter
Powiązania:
https://bibliotekanauki.pl/articles/1790258.pdf
Data publikacji:
2021-09-20
Wydawca:
Polskie Towarzystwo Socjologiczne
Tematy:
class analysis
forms of capital
intergenerational mobility
parental resources
Hungary
Opis:
The paper focuses on intergenerational mobility and explores the role of social origin in ending up in various class locations. Latent class analysis was applied to mapping the class structure based on economic, cultural and social assets. Parental education and occupation are used to examine how social origin operates in accumulating the various forms of capital and in getting into different class positions. Out of the forms of capital, economic resources, high cultural capital and prestige of social contacts depend particularly on social origin; these are the main channels affecting mobility into the best class locations. If coming from low educated worker class background, one may get only into one of the bottom class locations, while members of the top class positions come from families where parents hold tertiary degree and have high occupational status.
Źródło:
Polish Sociological Review; 2021, 215, 3; 371-386
1231-1413
2657-4276
Pojawia się w:
Polish Sociological Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Schwechat airport development forecast as a risk management tool to address the impact of the Covid-19 pandemic
Autorzy:
Rozenberg, Robert
Tomas, Marek
Tobisova, Alica
Hanak, Peter
Powiązania:
https://bibliotekanauki.pl/articles/2203087.pdf
Data publikacji:
2022
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
air transport
Vienna
Schwechat Airport
pandemic
COVID-19
crisis management
transport lotniczy
Wiedeń
port lotniczy Schwechat
pandemia
zarządzanie kryzysowe
Opis:
The COVID-19 pandemic has affected all areas of our society. The effects of the pandemic on the economy have not only affected mainly the development of transport and tourism but most especially air transport. Many airports in Europe and around the world have experienced a drop in passengers and cargo due to the COVID-19 pandemic. For many airports, this period, which began in 2019, meant huge losses due to a drop in passengers, leading to the collapse of several airlines. Despite the gradually improving situation, the impact of the pandemic is still being felt, and the number of passengers at airports is growing rather slowly. Thus, airports had to deal with the current situation and adapt their future operation to the current conditions. Even the leading airport in Central Europe - the Schwechat Airport in Vienna - was not spared from the effects of the current pandemic. This article aims to evaluate the effects of the COVID-19 pandemic on Schwechat airport. It focuses on the analysis of the development of the airport before and during the pandemic up to the present. Further, this article describes the problems that Schwechat airport dealt with throughout the period, with the loss of passengers, delays and the collapse of carriers. Subsequently, this article is part of a study aimed at identifying the negative effects of the pandemic on air transport and related industries worldwide. Predicting the development of the airport is a very important aspect, especially for the company's management and should be part of the risk management of every company.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 117; 221--231
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation and Optimization of Saw Blade Production in Plant Simulation
Autorzy:
Malega, Peter
Daneshjo, Naqib
Rudy, Vladimír
Rehák, Róbert
Powiązania:
https://bibliotekanauki.pl/articles/2201772.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
saw blade
Plant Simulation
optimization
production process
simulation model
Opis:
This paper is oriented on very important topics, which nowadays simulation and optimization surely are. First part of this paper is oriented on simulation software Plant Simulation, because this software is one of the best software on the market. Second section deals in detail with the procedure of saw blades production. Third section presents creation of simulation model for selected production process, which is production of saw blades. Final fourth section is about proposals for improvement of saw blade production.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 3; 67--77
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of air quality on sleep and cognitive performance in school children aged 10–12 years: a double-blinded, placebo-controlled, crossover trial
Autorzy:
Klausen, Frida B.
Amidi, Ali
Kjærgaard, Søren K.
Schlünssen, Vivi
Ravn, Peter
Østergaard, Kirsten
Gutzke, Vibeke H.
Glasius, Marianne
Grønborg, Therese K.
Hansen, Stefan N.
Zachariae, Robert
Wargocki, Pawel
Sigsgaard, Torben
Powiązania:
https://bibliotekanauki.pl/articles/2203016.pdf
Data publikacji:
2023-05-23
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
sleep quality
cognition
indoor air
CO2 exposure
school children
RCT study
Opis:
Objectives To investigate the effect of CO₂ during sleep on next-morning cognitive performance in young schoolchildren, the authors performed a double-blind fully balanced crossover placebo-controlled study. Material and Methods The authors included 36 children aged 10–12 years in the climate chamber. The children slept at 21°C in 6 groups each at 3 different conditions separated by 7 days in a random order. Conditions were as follows: high ventilation with CO₂ at 700 ppm, high ventilation with added pure CO₂ at 2000–3000 ppm, and reduced ventilation with CO₂ at 2–3000 ppm and bioeffluents. Children were subjected to a digital cognitive test battery (CANTAB) in the evening prior to sleep and on the next morning after breakfast. Sleep quality was monitored with wrist actigraphs. Results There were no significant exposure effects on cognitive performance. Sleep efficiency was significantly lower at high ventilation with CO₂ at 700 ppm which is considered to be a chance effect. No other effects were seen, and no relation between air quality during sleep and next-morning cognitive performance was observed in the children emitting an estimated 10 l CO₂ /h per child. Conclusions No effect of CO₂ during sleep was found on next day cognition. The children were awakened in the morning, and spent from 45–70 min in well-ventilated rooms before they were tested. Hence, it cannot be precluded that the children have benefitted from the good indoor air quality conditions before and during the testing period. The slightly better sleep efficiency during high CO₂ concentrations might be a chance finding. Hence, replication is needed in actual bedrooms controlling for other external factors before any generalizations can be made.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2023, 36, 2; 177-191
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Material Configuration of Fibre-Metal Laminates with Alumina Core on Flexural Strength
Autorzy:
Frankiewicz, Mariusz
Karoluk, Michał
Dziedzic, Robert
Timmel, Tristan
Scholz, Peter
Powiązania:
https://bibliotekanauki.pl/articles/24201172.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
fibre-metal laminates
flexural strength
fatigue
composite materials
Opis:
Fibre metal laminates (FMLs) consisting of layers made of PA6 polyamide prepregs reinforced with glass and carbon fibres and an aluminium alloy core are the new variant of the other types used by aerospace FML materials such as GLARE or CARALL. By using a thermoplastic matrix, they can be shaped by stamping processes, which allows for a more efficient production process than classical laminating methods such as vacuum bagging. In addition to the improved impact energy absorption efficiency, the metallic core can be utilised to effectively bond the composite part to adjacent metallic structures. This article presents the influence of the material configuration of fibre-metal laminates consisting of continuous fibre-reinforced thermoplastic outer layers integrated with a layer of metallic aluminium alloy inserts - a number of layers, type and direction of reinforcing fibres - on the static and fatigue flexural properties. In this study, eight laminate configurations were prepared using a one-step variothermal consolidation process. The results showed that in the three-point flexural fatigue test, the samples exceeded 106 cycles at stresses <30% of the static bending strength. Laminates with predominantly longitudinally reinforced layers showed the highest fatigue strength among the FML samples analysed. The type of reinforcing fibres and the number of layers were less affected on the analysed mechanical properties.
Źródło:
Fatigue of Aircraft Structures; 2022, 14; 18--28
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
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