Skocz do pozycji: 1.

Tytuł:

Computer Simulation of Cast Iron Flow in Castability Trials

Autorzy:

Popielarski, P.
Hajkowski, J.
Sika, R.
Ignaszak, Z.

Powiązania:

https://bibliotekanauki.pl/articles/355454.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology to the foundry industry
castings defects
cast iron
castability trial

Opis:

The paper includes validation studies of the flow module of the NovaFlow&Solid simulation code. Experiments of ductile iron and gray iron casting in a spiral test of castability were carried out. Casting experiments were then carried out in industrial conditions in the Ferrex Foundry in Poznań and the results are the castability spiral length and local cast iron rate during mould cavity pouring. Simulation tests using NovaFlow&Solid Control Volume code were made. The technological castability test was used to determine thermal-physical data through simplified inversion problem. Influence of physical parameters in the database of simulation code on the spiral length obtained as the result of simulation was analyzed. It was found that critical fraction of capillary flow CLF down has the biggest impact on cast iron castability in the simulation code. The simulations resulted in defining parameters of gray iron GJL 250 and ductile iron GJS-400-15. For the parameters set, the length of castability spiral in simulations was in accordance with casting experiments.

Źródło:

Archives of Metallurgy and Materials; 2019, 64, 4; 1433-1439
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

The Prediction of Moulding Sand Moisture Content Based on the Knowledge Acquired by Data Mining Techniques

Autorzy:

Regulski, K.
Jakubski, J.
Opaliński, A.
Brzeziński, M.
Głowacki, M.

Powiązania:

https://bibliotekanauki.pl/articles/355982.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology to the foundry industry
moulding sands
decision trees
ANOVA
data mining

Opis:

The subject of the study is the improvement of the quality of moulding sand preparation. An exploration research performed on the data concerning moulding sand quality parameters was described. The aim of the research was to find relationships between various factors determining the properties of moulding sands and, based on the results obtained, build models predicting the sand moisture content with the induction of classification and regression trees. A two-match prediction approach was demonstrated and its effectiveness in evaluating the moulding sand moisture content was discussed. The knowledge in the form of rules acquired in this way can be used in the creation of knowledge bases for systems supporting decisions in the diagnostics of the moulding sand rebonding process. Formalized knowledge also facilitates further processing of the measurement data.

Źródło:

Archives of Metallurgy and Materials; 2016, 61, 3; 1709-1714
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Formalization of Technological Knowledge in the Field of Metallurgy Using Document Classification Tools Supported with Semantic Techniques

Autorzy:

Regulski, K.

Powiązania:

https://bibliotekanauki.pl/articles/353849.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology to the foundry industry
document classification
semantic techniques
knowledge formalization
text mining

Opis:

The process of knowledge formalization is an essential part of decision support systems development. Creating a technological knowledge base in the field of metallurgy encountered problems in acquisition and codifying reusable computer artifacts based on text documents. The aim of the work was to adapt the algorithms for classification of documents and to develop a method of semantic integration of a created repository. Author used artificial intelligence tools: latent semantic indexing, rough sets, association rules learning and ontologies as a tool for integration. The developed methodology allowed for the creation of semantic knowledge base on the basis of documents in natural language in the field of metallurgy.

Źródło:

Archives of Metallurgy and Materials; 2017, 62, 2A; 715-720
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

An Evaluation of the Determinants of Total Factor Productivity Growth in Indian Information Technology Industry: An Application of DEA-based Malmquist Index
Ocena determinant wzrostu całkowitej produktywności czynników produkcji w indyjskim przemyśle technologii informacyjnych: zastosowanie indeksu Malmquista opartego na metodzie DEA

Autorzy:

Das, Prosenjit

Powiązania:

https://bibliotekanauki.pl/articles/14481347.pdf

Data publikacji:

2017-12-29

Wydawca:

Wyższa Szkoła Bankowa we Wrocławiu

Tematy:

przemysł technologii informacyjnych
metoda obwiedni danych
indeks produktywności Malmquista
model efektów losowych
całkowita produktywność czynników produkcji
catch-up
frontier-shift
Indie
information technology industry
data envelopment analysis
Malmquist productivity index
random-effects model
total factor productivity
India

Opis:

Aim: India has emerged as one of the most favoured destinations in the global Information Technology (IT) outsourcing market. On the other hand, the IT industry has been playing an instrumental role in transforming India’s image from a low income-backward nation to a knowledge-based economy.  Furthermore, the role of IT industry has been pivotal in putting India on a higher growth path. In addition, India’s IT industry has been showing robust performance in revenue earning, particularly in export revenue. However, the performance of this industry is likely affected by some recent global phenomena, such as 2008’s subprime crisis originated in the US, uncertainties in changes in H1-B visa rules, Britain’s exit from the EU, automation etc. There are other factors, like exchange rate volatility, emerging competition from other low-cost outsourcing destination countries, are also posing threat to India’s IT-outsourcing business. Against this backdrop, it is crucial to analyse the sustainability of performance of Indian IT industry. Thus, the present study aims at assessing the performance of Indian IT industry and evaluating the determinants of performance thereafter. Design / Research methods: To realize the objectives of the study, firm level data has been collected from the Centre for Monitoring Indian Economy (CMIE) Prowess database. For empirical analysis, we have applied a two-stage method. In the first-stage, we have used Data Envelopment Analysis (DEA) based Malmquist Productivity Index (MPI) to evaluate the Total Factor Productivity Growth (TFPG) of Indian IT industry during the period from 2004-05 to 2014-15. For this purpose, a balanced panel consists of 70 IT firms has been considered. Further, the TFPG has been decomposed into three components, viz. Catch-up, frontier-shift, and scale efficiency change (SEC). Consequently, in the second-stage, three random-effects panel regression models are considered to investigate the determinants of TFPG, catch-up, and frontier-shift separately.  Conclusions / findings: During the study period, the average TFP and frontier-shift has been improved. On the other hand, catch up effect is found to have declined. The variables, such as export intensity, salaries and wages intensity have positive and statistically significant impact on the catch-up and frontier-shift. Export intensity has positive impact on TFPG. Age of the firms has positive impact on catch-up and TFPG. Salaries and wages intensity has positive impact on TFPG. On an average, the firms which spent on research and Development (R&D) have experienced improvement in TFPG and frontier-shift. The public limited firms performed better than their private counterparts in terms of catch-up, frontier-shift, and TFPG. The non-group firms have performed better than the group firms in case of catch-up. On the other hand, on an average, the firms exhibiting decreasing Returns to Scale (DRS) are found to have registered deterioration in catch-up and TFPG with respect to the benchmark firms which are exhibiting Constant Returns to Scale (CRS). The firms exhibiting Increasing Returns to Scale (IRS) have shown improvement in catch-up and TFPG over the benchmark CRS firms. The impact of the US subprime crisis has been negative on catch-up, frontier-shift, and TFPG. The firms, which have spent on royalty, have experienced improvement in catch-up and TFPG.  Originality / value of the article: So far in our knowledge, not so many studies of this kind have been done in the arena of empirical research pertains to the IT industry, especially in a developing country like India. Moreover, we have not found any study that covers the span of the dataset considered in the present study. In addition to this, the present study has employed a random-effects panel model to accommodate a number of time-invariant dummy variables which would not be possible in case of a fixed-effects panel model incorporated by some previous studies of this genre. Implications of the research: The identification of the determinants of TFPG and its components would help the stakeholders and policy makers of the IT industry to formulate appropriate policies which could mitigate the risks faced by the industry on one hand, and stimulate the forces that would enhance the growth of this industry on the other. For instance, to mitigate future risks, Indian IT industry should reduce its dependence on the US and UK markets. Besides, it should explore new markets in the EU, and other emerging economies where opportunities are plenty. To maintain India’s robust global position in the long run, Government of India should play the key role in providing world class infrastructure and telecommunication facilities to its IT industry. In addition to this, Government needs to rationalise and simplify the existing Indian labour law to facilitate the business of IT industry. Various stakeholders along with the Government should put necessary efforts to develop the domestic IT market as there exists ample of opportunities in future.   JEL: C23, C61, L86, O47
Cel: Niniejsze badanie ma na celu ocenę wzrostu całkowitej produktywności czynników produkcji (ang. Total Factor Productivity Growth (TFPG)) i jego determinant w indyjskim przemysle technologii informacyjnych (ang. Information Technology (IT)).   Metodyka badań: Aby zrealizować cel badań, zgromadzono dane na poziomie firm z bazy danych PROWESS z Centrum Monitoringu Indyjskiej Gospodarki (ang. Centre for Monitoring Indian Economy (CMIE)). W analizie empirycznej wykorzystano metodę dwuetapową. W pierwszym etapie zastosowano Indeks Produktywności Malmquista (ang. Malmquist Productivity Index (MPI)) oparty na Metodzie Obwiedni Danych (ang.: Data Envelopment Analysis (DEA)), aby ocenić TFPG w indyjskim przemyśle IT w okresie od 2004-05 do 2014-15. W tym celu uwzględniono zrównoważony panel 70 firm z branży IT. Następnie dokonano rozkładu TFPG na trzy komponenty, mianowicie catch-up , frontier-shift  oraz zmiana efektywności skali (ang. scale efficiency change (SEC)). W drugim etapie rozważono trzy modele regresji dotyczące efektów losowych paneli, aby zbadać oddzielnie determinanty TFPG, catch-up i frontier-shift.   Wnioski: W okresie badawczym, poprawił się średnio TFPG i frontier-shift. Z drugiej strony zmalał efekt catch-up. Zmienne, takie jak intensywność eksportu czy intensywność wynagrodzeń miały pozytywny i statystycznie znaczący wpływ na catch-up i frontier-shift. Intensywność eksportu oraz wynagrodzenia pozytywnie oddziaływały na TFPG. Wiek przedsiębiorstw pozytywnie wpływał na catch-up i TFPG. Średnio, firmy, które dokonały wydatków na badania i rozwój (ang. Research and Development (R&D)), doświadczyły poprawy TFPG i frontier-shift. Publiczne przedsiębiorstwa z ograniczoną odpowiedzialnością radziły sobie lepiej niż ich prywatni odpowiednicy pod względem catch-up, frontier-shift i TFPG. Niezgrupowane firmy miały lepsze osiągnięcia z punktu widzenia catch-up aniżeli firmy zgrupowane. Z drugiej strony, przeciętnie, firmy osiągające malejące efekty skali (ang. decreasing Returns to Scale (DRS)) odnotowały pogorszenie w catch-up i TFPG w porównaniu do wyznacznika, jakim są firmy o stałych efektach skali (ang. Constant Returns to Scale (CRS)). Przedsiębiorstwa osiągające rosnące efekty skali (ang.: Increasing Returns to Scale (IRS)) uzyskały poprawę w zakresie catch-up i TFPG w większym stopniu niż będące wyznacznikiem firmy CRS. Kryzys na amerykańskim rynku kredytów hipotecznych negatywnie odbił się na catch-up, frontier-shift i TFPG. Przedsiębiorstwa, które poniosły wydatki na należności, doświadczyły poprawy catch-up i TFPG.   Wartość artykułu: Autorzy dotychczas nie spotkali tak licznych badań empirycznych tego typu odnoszących się do przemysłu IT, zwłaszcza w krajach rozwijających się, jak Indie. Co więcej, autorzy nie doszukali się żadnych badań obejmujących tak dużą rozpiętość danych, jaką uwzględniono w niniejszym artykule. W dodatku w niniejszym badaniu zastosowano model efektów losowych, aby dostosować pewne niezmienne w czasie zmienne, co nie byłoby możliwe w przypadku modelu stałych efektów, który wykorzystywano w niektórych wcześniejszych badaniach tego rodzaju.  Implikacje: Identyfikacja determinant TFPG i jego komponentów mogłaby pomóc interesariuszom i decydentom w sformułowaniu odpowiedniej polityki, co pozwoliłoby z jednej strony zmniejszyć ryzyko, którego doświadcza indyjski przemysł IT, a z drugiej pobudzić siły, które mogłyby przyczynić się do rozwoju tego przemysłu. Na przykład, aby ograniczyć przyszłe ryzyko, indyjski przemysł IT powinien zmniejszyć swoją zależność od rynku Stanów Zjednoczonych i Wielkiej Brytanii. Innymi słowy, powinien poszukiwać nowych rynków zarówno krajowych, jak też zagranicznych, np. w Unii Europejskiej, Australii i w gospodarkach wschodzących, gdzie rynki IT wydają się być obiecujące. Aby utrzymać indyjską solidną pozycję globalną w długim okresie, rząd indyjski powinien odgrywać kluczową rolę w zapewnianiu światowej klasy infrastruktury i urządzeń telekomunikacyjnych w przemyśle IT. Co więcej, rząd indyjski musi zracjonalizować i uprościć istniejące indyjskie prawo pracy, aby ułatwić aktywność ekonomiczną w przemyśle IT. Przeróżni interesariusze wraz z rządem powinni włożyć niezbędny wysiłek w rozwój krajowego rynku IT, które jest pełen możliwości.

Źródło:

Central European Review of Economics and Management; 2017, 1, 4; 175-224
2543-9472

Pojawia się w:

Central European Review of Economics and Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Optimization methods for lot-sizing problem in an automated foundry
Algorytmy planowania partii produkcyjnych w zautomatyzowanej odlewni

Autorzy:

Duda, J.
Stawowy, A.

Powiązania:

https://bibliotekanauki.pl/articles/354705.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology to the foundry industry
production planning
lot-sizing problem
planowanie produkcji
zastosowanie technologii informatycznych

Opis:

In the paper we studied a production planning problem in a mid-size foundry that provides tailor-made cast products in small lots for a large number of clients. Assuming that a production bottleneck is the furnace, a mixed-integer programming (MIP) model is proposed to determine the lot size of the items and the required alloys to be produced during each period of the finite planning horizon that is subdivided into smaller periods. As using an advanced commercial MIP solvers may be impractical for more complex and large problem instances, we proposed and compared a few computational intelligence heuristics i.e. tabu search, genetic algorithm and differential evolution. The examination showed that heuristic approaches can provide a good compromise between speed and quality of solutions and can be used in real-world production planning.
W pracy przedstawiono problem planowania produkcji w odlewni średniej wielkości, która dostarcza odlewy na zamówienie dla dużej liczby klientów. W takim problemie konieczne jest określenie wielkości partii produkcyjnej oraz ilości i gatunku metalu w każdym okresie skończonego horyzontu planowania, który jest podzielony na mniejsze podokresy. Przy założeniu, że wąskim gardłem jest piec do topienia metalu, zaproponowano programowanie całkowitoliczbowe mieszane (Mixed-Integer Programming - MIP) jako model planowania i harmonogramowania produkcji w odlewni. Jako że użycie zaawansowanych komercyjnych solverów może być niepraktyczne dla złożonych problemów, zaproponowano i porównano trzy heurystyki inteligencji obliczeniowej tj. tabu search, algorytm genetyczny i ewolucja różnicowa. Eksperymenty obliczeniowe wykazały, że algorytmy heurystyczne zapewniają zadowalającą szybkość i jakość rozwiązań.

Źródło:

Archives of Metallurgy and Materials; 2013, 58, 3; 863-866
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Comparison of Selected ERP Systems Supporting the Production Planning and Control on the Example of Automotive Industry

Autorzy:

Sika, Robert
Wojtala, Oliwia
Hajkowski, Jakub

Powiązania:

https://bibliotekanauki.pl/articles/2172187.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
enterprise management system
automotive industry

Opis:

In many companies, along with the economic development, the use of integrated management systems is becoming more and more common, which are subject to evolution in terms of, inter alia, offered functions and new user requirements. The main purpose of this paper is to compare selected ERP (Enterprise Resource Planning) systems in the field of production planning and control on the example of the automotive industry. The paper presents the contemporary functioning of the automotive industry against the background of issues related to the integrated management systems used in them. The research part presents the proprietary methodology for the assessment of IT systems used in the automotive industry, which included a user survey. The obtained score allowed to indicate the optimal ERP class system supporting production planning and control.

Źródło:

Management and Production Engineering Review; 2022, 13, 3; 39--51
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Mechanical engineering in Industry 4.0

Autorzy:

Hamrol, Adam
Gawlik, Józef
Sładek, Jerzy

Powiązania:

https://bibliotekanauki.pl/articles/407197.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

mechanical engineering
information technology
mass customisation
Industry 4.0

Opis:

The article presents tools, methods and systems used in mechanical engineering that in combination with information technologies create the grounds of Industry 4.0. The authors emphasize that mechanical engineering has always been the foundation of industrial activity, while information technology, the essential part of Industry 4.0, is its main source of innovation. The article discusses issues concerning product design, machining tools, machine tools and measurement systems.

Źródło:

Management and Production Engineering Review; 2019, 10, 3; 14--28
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Nowa era komunikacji przemysłowej

Autorzy:

Cieślak, Andrzej
Jaskólski, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/985945.pdf

Data publikacji:

2018

Wydawca:

Nowa Energia

Tematy:

komunikacja przemysłowa
przemysł
bezpieczeństwo
technologia informatyczna
industrial communication
industry
security
information technology

Opis:

Zakłady wytwarzające jakiekolwiek dobra konsumpcyjne, opierające swoją produkcję na standardach przemysłu procesowego, zderzają się z zagadnieniami wymiany informacji na masową skalę, wymiany danych pomiędzy światem biznesu oraz połączeniami pomiędzy OT (Operation Technology/Technologia Operacyjna), ICT (Information and Communication Technolog /Technologia Informacyjna i Komunikacyjna) i IT (Information Technology/Technologia Informacyjna). Jak optymalnie podejść do budowy skutecznej strategii komunikacji w przemyśle? Jak wybrać właściwą technologię i ją wdrożyć? W końcu jak eksploatować i utrzymywać wypracowany poziom jakości i skuteczności wymiany danych w środowisku OT?

Źródło:

Nowa Energia; 2018, 4; 85-87
1899-0886

Pojawia się w:

Nowa Energia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Management information systems in polish railway transport in the context of the technological and the organizational changes

Autorzy:

Rudowski, M.

Powiązania:

https://bibliotekanauki.pl/articles/95133.pdf

Data publikacji:

2014

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

information management systems
railway industry
PKP group
information technology
informatyczne systemy zarządzania
przemysł kolejowy
PKP
technologie informatyczne

Opis:

Paper presents the implementation problems of information management systems in the railway industry with an analysis of the current situation, the needs of companies and benefits of the implementation. It takes into account the area of financial management, a range similar to the other companies, as well as the area of operational management specific for their activities. These issues are presented in the context of technological changes taking place since the beginning of the XXI century in the information management systems and organizational changes in the PKP Group with the transport operations and railway infrastructure management separation, consolidation of the PKP Group and the changes connected with the preparation for the privatization of some of the group entities.

Źródło:

Information Systems in Management; 2014, 3, 1; 53-63
2084-5537
2544-1728

Pojawia się w:

Information Systems in Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Production scheduling for the furnace - casting line system

Autorzy:

Stawowy, A.
Duda, J.

Powiązania:

https://bibliotekanauki.pl/articles/382138.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
production planning
scheduling
technologia informacyjna
przemysł odlewniczy
planowanie produkcji
harmonogramowanie

Opis:

The problem considered in the paper is motivated by production planning in a foundry equipped with the furnace and casting line, which provides a variety of castings in various grades of cast iron/steel for a large number of customers. The quantity of molten metal does not exceed the capacity of the furnace, the load is a particular type of metal from which the products are made in the automatic casting lines. The goal is to create the order of the melted metal loads to prevent delays in delivery of goods to customers. This problem is generally considered as a lot-sizing and scheduling problem. The paper describes two computational intelligence algorithms for simultaneous grouping and scheduling tasks and presents the results achieved by these algorithms for example test problems.

Źródło:

Archives of Foundry Engineering; 2013, 13, 3; 84-87
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Pilot study of readiness of Czech companies to implement the principles of industry 4.0

Autorzy:

Basl, J.

Powiązania:

https://bibliotekanauki.pl/articles/406980.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

internet of things
industry 4.0
innovation
information and communication technology
cyber physical system

Opis:

This article describes results of the survey, which was conducted in the context of investigating the readiness of selected companies in the Czech Republic to implement the principles of Industry 4.0. The main objective of the survey was to analyze the level of a basic knowledge of this topic in enterprises, the existence of appropriate strategies, responsible persons, and the general awareness among employees.

Źródło:

Management and Production Engineering Review; 2017, 8, 2; 3-8
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

IT systems adoption and its impact on the food and agricultural sector
Zastosowanie technologii informatycznych i ich wpływ na sektor rolno-żywnościowy

Autorzy:

Wozniakowski, T.
Jalowiecki, P.

Powiązania:

https://bibliotekanauki.pl/articles/37878.pdf

Data publikacji:

2013

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

information technology
IT system zob.information technology
adoption
food industry
agricultural sector
e-business
innovation
communication technology
SOA zob.Service Oriented Architecture
Service Oriented Architecture
food production

Opis:

The paper contains an overview of Information and Communications Technology (ICT) implemented in food and agricultural enterprises. The description of the sector summarizes some unique features compared to numbers describing food production aspects in Europe. For better understanding of the whole phenomenon the paper describes an innovative processes and technology progress in general and in the sector as well. Important aspects and potential problematic areas such as factors that infl uence ICT deployment are shown and analyzed. Main focus is directed on the technologies of e-business and its impact on organizational aspect of the sector. Also the role of ICT in the innovation process and product has been reviewed and certain areas of improved activities compared and summarized. Very forward-looking technology in the agri-food sector is SOA. With a common data exchange standards, it is possible to transfer information between different units.
Artykuł zawiera przegląd technologii informacyjnych i komunikacyjnych (ICT) realizowanych w sektorze przetwórstwa żywności i przedsiębiorstw rolnych. Opis sektora zawiera podsumowanie kilku unikalnych cech oraz liczb opisujących aspekty produkcji żywności w Europie. Dla lepszego zrozumienia całego zjawiska ICT w tym sektorze artykuł opisuje procesy innowacyjne i postęp w technologii ogólnie, jak również w sektorze. Ważne aspekty i potencjalne obszary problemowe, takie jak czynniki, które wpływają na wdrożenia ICT są przeanalizowane i przedstawione w syntetyczny sposób. Główny nacisk skierowany jest na technologie e-biznesu i jej wpływ na organizacyjny aspekt sektora. Również rola ICT w innowacji procesowej oraz produktowej zostały przeanalizowane a pewne obszary poprawy działalności porównane i podsumowane. Bardzo przyszłościową technologią w sektorze rolno-spożywczym jest SOA. Wspólne standardy wymiany danych umożliwiają przesyłanie informacji pomiędzy różnymi jednostkami.

Źródło:

Acta Scientiarum Polonorum. Oeconomia; 2013, 12, 1
1644-0757

Pojawia się w:

Acta Scientiarum Polonorum. Oeconomia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Methodology for the Construction of a Rule-Based Knowledge Base Enabling the Selection of Appropriate Bronze Heat Treatment Parameters Using Rough Sets
Metodyka budowy regułowej bazy wiedzy umożliwiającej dobór odpowiednich parametrów obróbki cieplnej brązów z zastosowaniem zbiorów przybliżonych

Autorzy:

Górny, Z.
Kluska-Nawarecka, S.
Wilk-Kołodziejczyk, D.
Regulski, K.

Powiązania:

https://bibliotekanauki.pl/articles/353780.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology to the foundry industry
heat treatment
classification algorithms
rough sets
data mining
zastosowanie technologii informatycznych dla przemysłu odlewniczego
obróbka cieplna
algorytm klasyfikacji
zbiory przybliżone

Opis:

Decisions regarding appropriate methods for the heat treatment of bronzes affect the final properties obtained in these materials. This study gives an example of the construction of a knowledge base with application of the rough set theory. Using relevant inference mechanisms, knowledge stored in the rule-based database allows the selection of appropriate heat treatment parameters to achieve the required properties of bronze. The paper presents the methodology and the results of exploratory research. It also discloses the methodology used in the creation of a knowledge base.
Decyzje dotyczące odpowiedniej metody obróbki cieplnej brązów mają wpływ na uzyskanie końcowych własności tych materiałów. W pracy przedstawiono przykład budowy bazy wiedzy z zastosowaniem teorii zbiorów przybliżonych. Wiedza zgromadzona w bazie reguł umożliwia za pomocą mechanizmów wnioskowania dobór odpowiednich parametrów obróbki w celu uzyskania pożądanych własności brązu.

Źródło:

Archives of Metallurgy and Materials; 2015, 60, 1; 309-312
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Descriptive representation about transformation of company by using current technologies and tools for analytical processing and evaluation of diverse data

Autorzy:

Koman, G.
Holubčík, M.
Kubina, M.

Powiązania:

https://bibliotekanauki.pl/articles/108334.pdf

Data publikacji:

2018

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

big data technology,
data and information
decision-making
Industry 4.0
IoT
management
synergy

Opis:

Companies are currently producing and processing larger and larger amounts of data that they were not able to effectively process and subsequently use in the management of company processes in the past. There are several technologies and tools for the analytical processing and evaluation of diverse data, such as the Big Data technology. The Industry 4.0 concept (which is closely linked with the IoT) will bring an enormous growth of produced data into the company sphere. The information value of such data can signifi cantly affect managing and decision-making processes in a company. Here, we can see a synergy between man and technology where each influences the other. The purpose of this paper is to support the following statement: in the present business environment, we are facing the transformation of a company that, for efficient management and decision-making, needs: a) to capture and process all available data; b) to implement new tools into strategic decisions; and c) to integrate data through a single system. This article describes the possibilities of deploying the efficient use of new technologies (Big Data, Industry 4.0, and IoT) in management.

Źródło:

Managerial Economics; 2018, 19, 1; 89-101
1898-1143

Pojawia się w:

Managerial Economics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

The Effect of Pallet Component Geometry on Temperature Gradient During Cooling

Autorzy:

Bajwoluk, A.
Gutowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/379657.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
foundry pallet
temperature gradient
technologia informatyczna
przemysł odlewniczy
paleta
gradient temperatury

Opis:

The paper discusses the impact of the geometry of foundry pallet components on the value of temperature gradient on the wall crosssection during heat treatment. The gradient is one of the most important factors determining the distribution of thermal stresses in these items. Analysis of quantitative simulation was carried out to detect possible effect of the type of connection between pallet walls and thickness of these walls (ribs) on the interior temperature distribution during rapid cooling. The analysis was performed for five basic designs of wall connections used in pallets. Basing on the results obtained, the conclusions were drawn on the best connection between the ribs in foundry pallets.

Źródło:

Archives of Foundry Engineering; 2015, 15, 1; 5-8
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Decision support methods in cybersecurity education

Autorzy:

Komorowski, Tomasz M.
Klasa, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/1955257.pdf

Data publikacji:

2019

Wydawca:

Politechnika Gdańska

Tematy:

smart manufacturing systems
Industry 4.0
information technology
operational technology
industrial automation and control systems
functional safety
cybersecurity
risk evaluation

Opis:

Even the best technology will be ineffective if not used appropriately, therefore education and training about cybersecurity principles and programs are essential components of any cybersecurity strategy. This article presents selected models of the decision support theory from the point of view of cybersecurity education. The analysis of scientific literature and the available research results serve as a base to characterize approaches to raise the awareness of decision-makers about potential cyber threats and the development of appropriate attitudes and the conscious use of information systems and digital resources. The main part of the article is devoted to the issue of the use of teaching methods to increase the involvement of learners. It also describes examples of selected models of the game theory used in IT security education, including examples of simulation games dedicated to decision-making in the domain of IT security.

Źródło:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2019, 23, 2; 245-256
1428-6394

Pojawia się w:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Models and algorithms for production planning and scheduling in foundries - current state and development perspectives

Autorzy:

Stawowy, A.
Duda, J.

Powiązania:

https://bibliotekanauki.pl/articles/382778.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

technologia informatyczna
przemysł odlewniczy
planowanie produkcji
szeregowanie zadań
information technology
foundry industry
production planning
scheduling

Opis:

Mathematical programming, constraint programming and computational intelligence techniques, presented in the literature in the field of operations research and production management, are generally inadequate for planning real-life production process. These methods are in fact dedicated to solving the standard problems such as shop floor scheduling or lot-sizing, or their simple combinations such as scheduling with batching. Whereas many real-world production planning problems require the simultaneous solution of several problems (in addition to task scheduling and lot-sizing, the problems such as cutting, workforce scheduling, packing and transport issues), including the problems that are difficult to structure. The article presents examples and classification of production planning and scheduling systems in the foundry industry described in the literature, and also outlines the possible development directions of models and algorithms used in such systems.

Źródło:

Archives of Foundry Engineering; 2012, 12, 2; 69-74
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Investigation of the Process of Data Acquisition Regarding the Process of Casting from the Internet

Autorzy:

Wilk-Kolodziejczyk, D.
Kluska-Nawarecka, S.
Stefański, Z.
Smolarek, A.

Powiązania:

https://bibliotekanauki.pl/articles/380058.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

foundry industry
casting process
information technology
crawler
przemysł odlewniczy
proces odlewania
technologie informatyczne
roboty indeksujące

Opis:

Access to up-to-date information on technology, innovation, source publications, and the materials and services offered in a particular industry is very important for both industrial plants and departmental research centres. It should be noted that obtaining such information using publicly available search engines such as Google, Yahoo!, Bing, Bindu (mainly used in China) is only apparently easy because, due to their versatility, they deliver results with great redundancy. This leads to the need to analyze large data sets by linguistic methods or "manually", which is very tedious and time consuming. In this situation, it was considered reasonable to undertake studies aimed at acquiring relatively simple IT tools, i.e. crawlers, which allow their users to selectively search for information in a particular problem area, which in this particular case is casting. The intention of this work was to collect and analyze the experimental material that would allow describing the characteristics of the above solutions from the point of view of the range of their application, the quality of the results achieved, and possible limitations and preferences taking into account user needs.

Źródło:

Archives of Foundry Engineering; 2018, 18, 1; 212-216
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Integrated functional safety and cybersecurity. Analysis method for smart manufacturing systems

Autorzy:

Kosmowski, Kazimierz T.
Śliwiński, Marcin
Piesik, Jan

Powiązania:

https://bibliotekanauki.pl/articles/1955260.pdf

Data publikacji:

2019

Wydawca:

Politechnika Gdańska

Tematy:

smart manufacturing systems
Industry 4.0
information technology
operational technology
industrial automation and control systems
functional safety
cybersecurity
risk evaluation

Opis:

This article addresses integrated functional safety and cybersecurity analysis with regard to: the generic functional safety standard IEC 61508 and the cyber security standard IEC 62443 concerning an industrial automation and control system (IACS). The objective is to mitigate the vulnerability of information technology (IT) and operational technology (OT) systems, and reduce relevant risks taking into account a set of fundamental requirements (FRs). A method is proposed for determining and verifying the performance level (PL) or the safety integrity level (SIL) of defined safety functions, and then validating these levels depending on the security level (SL) of a particular domain,e.g.a safety related control system (SRCS). The method is general in the sense that it is based on risk graphs prepared for individual risk and/or societal/group risk with regard to the criteria defined.

Źródło:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2019, 23, 2; 177-207
1428-6394

Pojawia się w:

TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

The Decision Support System in the Domain of Casting Defects Diagnosis

Autorzy:

Wilk-Kołodziejczyk, D.
Rojek, G.
Regulski, K.

Powiązania:

https://bibliotekanauki.pl/articles/947573.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology
foundry industry
castings defects
diagnosis
zastosowanie technologii informatycznych
przemysł odlewniczy
wady odlewów

Opis:

This article presents a computer system for the identification of casting defects using the methodology of Case-Based Reasoning. The system is a decision support tool in the diagnosis of defects in castings and is designed for small and medium-sized plants, where it is not possible to take advantage of multi-criteria data. Without access to complete process data, the diagnosis of casting defects requires the use of methods which process the information based on the experience and observations of a technologist responsible for the inspection of ready castings. The problem, known and studied for a long time, was decided to be solved with a computer system using a CBR (Case-Based Reasoning) methodology. The CBR methodology not only allows using expert knowledge accumulated in the implementation phase, but also provides the system with an opportunity to "learn" by collecting new cases solved earlier by this system. The authors present a solution to the system of inference based on the accumulated cases, in which the main principle of operation is searching for similarities between the cases observed and cases stored in the knowledge base.

Źródło:

Archives of Foundry Engineering; 2014, 14, 3; 107-110
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

The use of optical scanning for analysis of casting shape
Wykorzystanie skanowania optycznego do analizy kształtu odlewów

Autorzy:

Wieczorowski, M.
Grzelka, M.
Budzik, G.
Augustyn-Pieniazek, J.

Powiązania:

https://bibliotekanauki.pl/articles/379621.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
quality management
nondestructive testing
technologia informatyczna
przemysł odlewniczy
zarządzanie jakością
badania nieniszczące

Opis:

In the paper the use of optical scanning for inspection of casting shape and its accuracy was described. Optical system applied to digitization of objects determines all dimensions and shape of inspected object. This technology is used in quality control and reverse engineering. System is based on triangulation: sensor head performs projection of different patterns of fringes onto measured object and scanner tracks their distribution with two cameras. Basing on optical transform equations, a processing unit automatically and with remarkable accuracy calculates 3D coordinates for every pixel of camera. Depending on camera resolution the result of such a scan is a cloud of points with up to 5 million points for every image. In the paper examples of applications for castings with different designation was presented.
W artykule opisano wykorzystanie skanowania optycznego do kontroli dokładności wykonania odlewów. System optyczny stosowany do digitalizacji obiektów określa wszystkie wymiary i kształt badanego przedmiotu. Technologia ta wykorzystywana jest w kontroli jakości i w inżynierii odwrotnej. System bazuje na zasadzie triangulacji: głowica sensora dokonuje projekcji różnych układów prążków na obiekt mierzony a skaner obserwuje ich przebieg dwoma kamerami. Opierając się na równaniach transformacji optycznej, jednostka przetwarzająca automatycznie i z dużą dokładnością oblicza współrzędne 3D dla każdego piksela kamery. Zależnie od rozdzielczości kamery, wynikiem takiego skanu jest chmura do 4 milionów punktów dla każdego pojedynczego pomiaru. W artykule pokazano przykładowe zastosowanie skanera optycznego do pomiarów odlewów o różnym przeznaczeniu.

Źródło:

Archives of Foundry Engineering; 2011, 11, 2 spec.; 217-221
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Production Scheduling for the One Furnace – Two Casting Lines System

Autorzy:

Basiura, R.
Duda, J.
Stawowy, A.

Powiązania:

https://bibliotekanauki.pl/articles/379848.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
production planning
production scheduling
technologia informatyczna
przemysł odlewniczy
planowanie produkcji
harmonogramowanie produkcji

Opis:

The paper presents a scheduling production problem in foundry equipped with one furnace and two casting lines, which provides a number of different types of castings for a large number of clients. The amount of molten metal may not be greater than the capacity of the furnace and its load is a type of metal, from which the products are manufactured on automated casting lines. The purpose of planning is to create the processing order of metal, to prevent delays in the delivery of the ordered products to the customers. This problem is mixt of lot-sizing problem and scheduling problem on two machines (the lines) running in parallel. The article gives a mathematical model, which formally defines the optimization problem, and his relaxed version which is based on the concept of rolling-horizon planning. The proposed approaches were tested on the sample data.

Źródło:

Archives of Foundry Engineering; 2015, 15, 2 spec.; 3-6
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Thermal Stresses in the Wall Connections of Cast Grate Structures

Autorzy:

Bajwoluk, A.
Gutowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/380772.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
cast grates
thermal stresses
technologia informatyczna
przemysł odlewniczy
odlew
paleta
naprężenia cieplne

Opis:

The purpose of this study was to establish a relationship between the type of wall connection used in the cast grates, which are part of the equipment operating in furnaces for heat treatment and thermal-chemical treatment, and stresses generated in these grates during the process of rapid cooling. The places where the grate walls are connected to each other are usually characterized by the thickness larger than the remaining parts of walls. Temperature variations in those places are responsible for the formation of hot spots, and in the hot spots temperature changes much more slowly. The type of wall connection shapes the temperature gradient in the joint cross-section, and hence also the value of thermal stresses generated during cooling. In this study, five different designs of the grates were compared; the difference in them was the type of the designed wall connection. The following design variants were adopted in the studies: X connections with and without holes, T connections with and without technological recesses, and R (ring) connection. Numerical analysis was performed to examine how the distribution of temperature changes in the initial phases of the cooling process. The obtained results served next as a tool in studies of the stress distribution in individual structures. The analysis were carried out by FEM in Midas NFX 2014 software. Based on the results obtained, the conclusions were drawn about the impact of different types of wall connections on the formation of thermal stresses in cast grates.

Źródło:

Archives of Foundry Engineering; 2016, 16, 4; 11-16
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Mathematical Programming for Lot Sizing and Production Scheduling in Foundries

Autorzy:

Duda, J.
Stawowy, A.
Basiura, R.

Powiązania:

https://bibliotekanauki.pl/articles/380801.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology
foundry industry
production planning
scheduling
zastosowanie technologii informatycznych
przemysł odlewniczy
planowanie produkcji

Opis:

The problem considered in the paper is motivated by production planning in a foundry equipped with the furnace and casting line, which provides a variety of castings in various grades of cast iron/steel for a large number of customers. The quantity of molten metal does not exceed the capacity of the furnace, the load is a particular type of metal from which the products are made. The goal is to create the order of the melted metal loads to prevent delays in delivery of goods to customers. This problem is generally considered as a lot-sizing and scheduling problem. The paper describes a mathematical programming model that formally defines the optimization problem and its relaxed version that is based on the conception of rolling-horizon planning.

Źródło:

Archives of Foundry Engineering; 2014, 14, 3; 17-20
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Thermal Stresses in the Accessories of Heat Treatment Furnaces vs Cooling Kinetics

Autorzy:

Bajwoluk, A.
Gutowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/382585.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

foundry industry
application of information technology
information technology
grates
thermal stresses
heat treatment equipment
przemysł odlewniczy
zastosowanie technologii informatycznej
technologia informatyczna
ruszty
naprężenia termiczne
sprzęt do obróbki cieplnej

Opis:

Depending on the course of the processes of heat treatment and thermo-chemical treatment, the technological equipment of heat treatment furnaces is exposed to different operating conditions, as the said processes differ among themselves in the temperature of annealing and atmosphere prevailing in the furnace chamber, in the duration of a single work cycle and in the type and temperature of the coolant. These differences affect the magnitude of stresses occurring in each cycle of the operation of furnace accessories, and thus play an important role in fatigue processes leading to the destruction of these accessories. The kinetics of temperature changes during each cooling process plays an important role in the formation of thermal stresses on the cross-section of the cooled parts. It depends on many factors, including the initial cooling temperature, the type and temperature of the cooling medium, or the dimensions and shape of the object. This article presents a numerical analysis of the effect of the initial temperature on the distribution of stresses on the cross-section of the grate ribs, generated in the first few seconds of the cooling process carried out in two cooling media, i.e. hardening oil and water. The analysis was carried out by the finite element method, based on the results of experimental testes of temperature changes in the rib during its cooling.

Źródło:

Archives of Foundry Engineering; 2019, 3; 88-93
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Numerical Modelling of Fluid Flow and Thermal Phenomena in the Tundish of CSC Machine

Autorzy:

Sowa, L.

Powiązania:

https://bibliotekanauki.pl/articles/380813.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

solidification process
foundry industry
information technology
continuous casting
molten metal
krzepnięcie
przemysł odlewniczy
odlewanie ciągłe
metal płynny

Opis:

The mathematical and numerical simulation model of the liquid steel flow in a tundish is presented in this paper. The problem was treated as a complex and solved by the finite element method. The single-strand slab tundish is used to continuous casting slabs. The internal work space of the tundish was modified by the following flow control devices. The first device was a striker pad situated in the pouring tundish zone. The second device was a baffle with three holes and the third device was a baffle without hole. The main purpose of using these devices was to cause a quiet liquid mixing as well as give directional metal flow upwards which facilitated inclusion floatation. The interaction of flow control devices on hydrodynamic conditions was received from numerical simulation. As a result of the computations carried out, the liquid steel flow and steel temperature fields were obtained. The influence of the tundish modification on velocity fields in the liquid phase of steel was estimated, because these have an essential influence on high quality of a continuous steel cast slab.

Źródło:

Archives of Foundry Engineering; 2014, 14, 1; 103-106
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

A Study of the Efficiency of Polish Foundries Using Data Envelopment Analysis

Autorzy:

Stawowy, A.
Duda, J.

Powiązania:

https://bibliotekanauki.pl/articles/379915.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

foundry industry
benchmarking
data analysis
application of information technology
efficiency
przemysł odlewniczy
analiza danych
zastosowanie technologii informacyjnch
efektywność

Opis:

The article presents a study on the effectiveness of the foundries using Data Envelopment Analysis (DEA) method. The aim of the article is to analyze the usefulness of DEA method in the study of the relative efficiency of the foundries. DEA is a benchmarking technique based on linear programming to evaluate the effectiveness of the analyzed objects. The research was conducted in four Polish and two foreign plants. Evaluated foundries work in similar markets and have similar production technology. We created a DEA model with two inputs (fixed assets and employment) and one output (operating profit). The model was produced and solved using Microsoft Excel together with its Solver add-in. Moreover, we wrote a short VBA script to perform automating calculations. The results of our study include a benchmark and foundries’ ranking, and directions to improve the efficiency of inefficient units. Our research has shown that DEA can be a very valuable method for evaluating the efficiency of foundries.

Źródło:

Archives of Foundry Engineering; 2017, 17, 1; 223-227
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Integrated Analytical and Measurement System for the Evaluation of the Properties of Cast Metals and Alloys

Autorzy:

Biernat, S.
Bydałek, A. W.

Powiązania:

https://bibliotekanauki.pl/articles/380877.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

foundry industry
application of information technology
solidification process
brass
hardness
przemysł odlewniczy
zastosowanie technologii informatycznych
krzepnięcie
mosiądz
twardość

Opis:

The article presents an integrated analytical and measurement system for evaluation of the properties of cast metals and alloys. The presented platform is an extension of the SLAG - PROP application with new modules, which allow to use information on metallurgical processes in an even more effective way, as well as to evaluate the finished product. In addition, the construction of a measuring station for the analysis of thermal processes taking place in a metal bath allows for precise observation of phenomena together with their appropriate interpretation. The article presents not only the cooling curves of certain copper alloys. The analysis also covered mechanical properties related to hardness, finished products depending on the mold in which the products were cast. In the literature one can find information about the mechanical properties of products in the improved state, usually after plastic or thermal treatment, omitting their properties obtained as a result of a naturally made casting. The article also presents the method of placing information in the database using a convenient graphical tool.

Źródło:

Archives of Foundry Engineering; 2019, 1; 13-18
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 29.

Tytuł:

Applicability of Business Rules to Production Management in Foundries

Autorzy:

Stawowy, A.
Duda, J.
Wrona, R.

Powiązania:

https://bibliotekanauki.pl/articles/383187.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology
foundry industry
operation management
business rules
zastosowanie technologii informatycznych
przemysł odlewniczy
zarządzanie operacyjne
reguły biznesowe

Opis:

The size and complexity of decision problems in production systems and their impact on the economic results of companies make it necessary to develop new methods of solving these problems. One of the latest methods of decision support is business rules management. This approach can be used for the quantitative and qualitative decision, among them to production management. Our study has shown that the concept of business rules BR can play at most a supporting role in manufacturing management, but alone cannot form a complete solution for production management in foundries.

Źródło:

Archives of Foundry Engineering; 2016, 16, 1; 85-88
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 30.

Tytuł:

Coordinated Production Planning and Scheduling Problem in a Foundry

Autorzy:

Stawowy, A.
Duda, J.

Powiązania:

https://bibliotekanauki.pl/articles/381726.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

foundry industry
application of information technology
production planning
scheduling
heuristics
przemysł odlewniczy
zastosowanie technologii informatycznych
planowanie produkcji
planowanie skoordynowane

Opis:

In the paper, we present a coordinated production planning and scheduling problem for three major shops in a typical alloy casting foundry, i.e. a melting shop, molding shop with automatic line and a core shop. The castings, prepared from different metal, have different weight and different number of cores. Although core preparation does not required as strict coordination with molding plan as metal preparation in furnaces, some cores may have limited shelf life, depending on the material used, or at least it is usually not the best organizational practice to prepare them long in advance. Core shop have limited capacity, so the cores for castings that require multiple cores should be prepared earlier. We present a mixed integer programming model for the coordinated production planning and scheduling problem of the shops. Then we propose a simple Lagrangian relaxation heuristic and evolutionary based heuristic to solve the coordinated problem. The applicability of the proposed solution in industrial practice is verified on large instances of the problem with the data simulating actual production parameters in one of the medium size foundry.

Źródło:

Archives of Foundry Engineering; 2017, 17, 3; 133-138
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 31.

Tytuł:

Heuristic Model of the Mechanical Properties of a Hypoeutectic EN AC-42100 (EN AC-AlSi7Mg0.3) Silumin Alloy Subjected to Heat Treatment

Autorzy:

Górny, Z.
Kluska-Nawarecka, S.
Czekaj, E.
Wilk-Kołodziejczyk, D.
Saja, K.

Powiązania:

https://bibliotekanauki.pl/articles/383182.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
application of information technology
foundry industry
silumin alloy
mechanical properties
heat treatment
fuzzy logic
artificial intelligence
technologie informatyczne
zastosowanie technologii informatycznych
przemysł odlewniczy
silumin
właściwości mechaniczne
obróbka cieplna
sztuczna inteligencja

Opis:

The object of the experimental studies was to determine the mechanical properties of a hypoeutectic EN AC - 42100 (EN ACAlSi7Mg0,3) silumin alloy, where the said properties are changing as a result of subjecting the samples of different types to solution treatment. An important aspect of the studies was the use type of device for the heat treatment. As a basic parameter representing the mechanical properties, the tensile strength of the metal (Rm) was adopted.

Źródło:

Archives of Foundry Engineering; 2014, 14, 4; 35-38
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 32.

Tytuł:

The Interconnections Between ICT, Industry 4.0 and Agile Manufacturing

Autorzy:

Mohammed, Ibrahim Khan
Trzcielinski, Stefan

Powiązania:

https://bibliotekanauki.pl/articles/2023998.pdf

Data publikacji:

2021-12

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information communication technology
ICT
agile manufacturing
AM
lean production
industry 4.0
small size enterprise
medium size enterprise
SME

Opis:

Technological progress is the driving force behind industrial development. It is a multidimensional and multi-level phenomenon. In this article we focus on its three manifestations: information and communication technologies (ICT), Industry 4.0 and agile manufacturing. The aim of this article is to analyse the relationship between these constructs as they are undoubtedly interrelated. ICT plays a key role, but it is not a goal itself. They are a prerequisite for the implementation of Industry 4.0, but together with it they serve to achieve agility by the manufacturing system and, as a result, achieve a competitive advantage by companies operating in turbulent and unpredictable environment. The literature findings in this paper are part of a broader study conducted on the impact of ICT on agility of SMEs operating in India. Therefore, we include also subsections showing the level of this relationship in Indian SMEs.

Źródło:

Management and Production Engineering Review; 2021, 14, 4; 99-110
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 33.

Tytuł:

Production Scheduling for the Two Furnaces – One Casting Line System

Autorzy:

Stawowy, A.
Duda, J.

Powiązania:

https://bibliotekanauki.pl/articles/383276.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

heuristics
application of information technology
foundry industry
scheduling
production planning
heurystyka
zastosowanie technologii informatycznej
przemysł odlewniczy
planowanie
planowanie produkcji

Opis:

The paper presents a production scheduling problem in a foundry equipped with two furnaces and one casting line, where the line is a bottleneck and furnaces, of the same capacity, work in parallel. The amount of produced castings may not exceed the capacity of the line and the furnaces, and their loads determine metal type from which the products are manufactured on the casting line. The purpose of planning is to create the processing order of metal production to prevent delays in the delivery of the ordered products to the customers. The problem is a mix of a lot-sizing and scheduling problems on two machines (the furnaces) run in parallel. The article gives a mathematical model that defines the optimization problem, and its relaxed version based on the concept of a rolling-horizon planning. The proposed approaches, i.e. commercial solver and Iterated Local Search (ILS) heuristic, were tested on a sample data and different problem sizes. The tests have shown that rolling horizon approach gives the best results for most problems, however, developed ILS algorithm gives better results for the largest problem instances with tight furnace capacity.

Źródło:

Archives of Foundry Engineering; 2020, 20, 1; 43-48
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 34.

Tytuł:

Analysis of Thermal Stresses in Components of Pallets Operating in Furnaces for the Carburising Treatment

Autorzy:

Bajwoluk, A.
Gutowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/380818.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

foundry industry
application of information technology
pallet
heat flow
thermal stresses
przemysł odlewniczy
zastosowanie technologii informatycznych
przepływ ciepła
naprężenia

Opis:

The study is devoted to an analysis of thermal stresses arising in the basic elements of pallets used in furnaces for the carburising treatment. The construction of a pallet was presented and an example of its operating cycle was described. Using finite element method, a simulation analysis of the kinetics of cooling and heating of selected pallet components was performed. The results obtained were verified experimentally and used as a basis for the analysis of thermal stresses generated in these components during their cooling.

Źródło:

Archives of Foundry Engineering; 2014, 14, 1 spec.; 175-180
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 35.

Tytuł:

Reconstruction of the Casting Technology in the Bronze Age on the Basis of Investigations and Visualisation of Casting Moulds

Autorzy:

Garbacz-Klempka, A.
Kwak, Z.
Żak, P. L.
Szucki, M.
Ścibior, D.
Stolarczyk, T.
Nowak, K.

Powiązania:

https://bibliotekanauki.pl/articles/381850.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology
foundry industry
archaeometallurgy
casting moulds
bronze
XRF
zastosowanie technologii informatycznych
przemysł odlewniczy
archaeometalurgia
formy odlewnicze
brąz

Opis:

During excavation of the cremation cemetery of urnfield culture in Legnica at Spokojna Street (Lower Silesia, Poland), dated to 1100-700 BC, the largest - so far in Poland – a collection of casting moulds from the Bronze Age was discovered: three moulds for axes casting made out of stone and five moulds for casting sickles, razors, spearhead and chisels, made out of clay. This archaeological find constituted fittings of foundrymen’s graves. In order to perform the complete analysis of moulds in respect of their application in the Bronze Age casting technology analytical methods, as well as, computer aided methods of technological processes were used. Macroscopic investigations were performed and the X-ray fluorescence spectrometry method was used to analyse the chemical composition and metal elements content in mould cavities. Moulds were subjected to three-dimensional scanning and due to the reverse engineering the geometry of castings produced in these moulds were obtained. The gathered data was used to perform design and research works by means of the MAGMA5 software. Various variants of the pouring process and alloys solidification in these archaeological moulds were simulated. The obtained results were utilised in the interpretation of the Bronze Age casting production in stone and clay moulds, with regard to their quality and possibility of casting defects occurrence being the result of these moulds construction. The reverse engineering, modelling and computer simulation allowed the analysis of moulds and castings. Investigations of casting moulds together with their digitalisation and reconstruction of casting technology, confirm the high advancement degree of production processes in the Bronze Age.

Źródło:

Archives of Foundry Engineering; 2017, 17, 3; 184-190
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 36.

Tytuł:

Gating systems for sizeable castings from Al alloys cast into ceramic moulds

Autorzy:

Stachovec, I.
Horáček, M.
Zemčík, L.
Kolda, V.
Horenský, J.

Powiązania:

https://bibliotekanauki.pl/articles/382771.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

technologia informatyczna
przemysł odlewniczy
krzepnięcie
układ wlewowy
forma ceramiczna
symulacja
information technology
foundry industry
solidification
gating systems
ceramic mould
simulation

Opis:

In contrast to casting to conventional non-reusable 'sand' moulds, for which calculating technique for an optimum design of the gating system is comparatively well-developed, a trial-and-error method is applied mostly for casting to ceramic shell moulds made by the investment casting technology. A technologist selects from gating systems of several types (that are standardized by the foundry mostly) on the basis of experience. However, this approach is not sustainable with ever growing demands on quality of castings and also the economy of their fabrication as well as with new types of complex sizeable castings introduced to the production gradually (by new customers from the aircraft industry above all) any more. The simulation software may be used as a possible tool for making the process of optimising gating systems more effective.

Źródło:

Archives of Foundry Engineering; 2012, 12, 2; 65-68
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 37.

Tytuł:

Production Scheduling under Fuzziness for the Furnace - Casting Line System

Autorzy:

Duda, J.
Stawowy, A.

Powiązania:

https://bibliotekanauki.pl/articles/380049.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
production planning
production scheduling
fuzzy number
technologia informatyczna
przemysł odlewniczy
planowanie produkcji
harmonogramowanie produkcji
liczba rozmyta

Opis:

The problem considered in the paper is motivated by production planning in a foundry equipped with a furnace and a casting line, which provides a variety of castings in various grades of cast iron/steel for a large number of customers. The goal is to create the order of the melted metal loads to prevent delays in delivery of goods to customers. This problem is generally considered as a lot-sizing and scheduling problem. However, contrary to the classic approach, we assumed the fuzzy nature of the demand set for a given day. The paper describes a genetic algorithm adapted to take into account the fuzzy parameters of simultaneous grouping and scheduling tasks and presents the results achieved by the algorithm for example test problem.

Źródło:

Archives of Foundry Engineering; 2015, 15, 4; 29-32
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 38.

Tytuł:

Multi-agent Approach to Production Scheduling in Foundries

Autorzy:

Duda, J.
Stawowy, A.

Powiązania:

https://bibliotekanauki.pl/articles/380130.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
production planning
production scheduling
multiagent approach
technologia informatyczna
przemysł odlewniczy
planowanie produkcji
harmonogramowanie produkcji
system wieloagentowy

Opis:

The paper describes a complete framework that uses a multi-agent approach for production scheduling in a foundry. Different types of autonomous agents have been designed, each playing a different role in the supply chain management of the fodundry, along with their responsibility and behavior in the system. In order to generate a proper and reliable schedule the agents negotiate with each other by sending messages compliant to FIPA ACL standard. A prototype of the system has been implemented in JADE and allowed to conduct preliminary simulation of the system. Although some agents some agents have been omitted in the prototype, it was possible to verify the main assumptions of the system, as well as, to indicate and discuss potential problems with its implementation into production practice.

Źródło:

Archives of Foundry Engineering; 2015, 15, 2 spec.; 17-22
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 39.

Tytuł:

Experimental Investigations on the Ejector Forces in the Die Casting Process

Autorzy:

Krischke, S.
Müller, S.
Schuchardt, T.
Kouki, Y.
Dilger, K.

Powiązania:

https://bibliotekanauki.pl/articles/382411.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

innovative foundry technology
innovative foundry material
information technology
foundry industry
high pressure die casting
ejector force
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
technologia informatyczna
przemysł odlewniczy
odlewanie wysokociśnieniowe

Opis:

A measuring system was developed for the measurement of ejector forces in the die casting process. When selecting the sensor technology, particular care was taken to ensure that measurements can be taken with a high sampling rate so that the fast-running ejection process can be recorded. For this reason, the system uses piezoelectric force sensors which measure the forces directly at the individual ejector pins. In this way, depending on the number of sensors, it is possible to determine both the individual ejector forces and the total ejector force. The system is expandable and adaptable with regard to the number and position of the sensors and can also be applied to real HPDC components. Automatic triggering of the measurements is also possible. In addition to the measuring system, a device and a method for in-situ calibration of the sensors have also been developed. To test the measuring system, casting experiments were carried out with a real aluminium HPDC aluminium component. The experiments showed that it is possible to measure the ejector forces with sufficient sampling rate and also to observe the process steps of filling, intensification and die opening by means of ejector forces. Experimental setup serves as a basis for future investigations regarding the influencing parameters on the ejection process.

Źródło:

Archives of Foundry Engineering; 2018, 18, 4; 116-119
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 40.

Tytuł:

The Effect of Cooling Agent on Stress and Deformation of Charge-loaded Cast Pallets

Autorzy:

Bajwoluk, A.
Gutowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/382504.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
cast grate
thermal stresses
heat treatment equipment
technologia informacyjna
przemysł odlewniczy
paleta odlewnicza
naprężenia cieplne
obróbka cieplna

Opis:

The results of research on the effect of the type of cooling agent used during heat treatment and thermal-chemical treatment on the formation of temperature gradient and stress-deformation distribution in cast pallets, which are part of furnace accessories used in this treatment, are disclosed. During operation, pallets are exposed to the effect of the same conditions as the charge they are carrying. Cyclic thermal loads are the main cause of excessive deformations or cracks, which after some time of the cast pallet operation result in its withdrawal due to damage. One of the major causes of this damage are stresses formed under the effect of temperature gradient in the unevenly cooled pallet construction. Studies focused on the analysis of heat flow in a charge-loaded pallet, cooled by various cooling agents characterized by different heat transfer coefficients and temperature. Based on the obtained temperature distribution, the stress distribution and the resulting deformation were examined. The results enabled drawing relevant conclusions about the effect of cooling conditions on stresses formed in the direction of the largest temperature gradient.

Źródło:

Archives of Foundry Engineering; 2017, 17, 4; 13-18
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Problem of the moving boundary in continuous casting solved by the analytic-numerical method

Autorzy:

Grzymkowski, R.
Pleszczyński, M.
Hetmaniok, E.

Powiązania:

https://bibliotekanauki.pl/articles/383233.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
solidification process
numerical techniques
moving boundary problem
technologia informacyjna
przemysł odlewniczy
krzepnięcie stopu
technika numeryczna
problem brzegowy

Opis:

Mathematical modeling of thermal processes combined with the reversible phase transitions of type: solid phase – liquid phase leads to formulation of the parabolic or elliptic moving boundary problem. Solution of such defined problem requires, most often, to use some sophisticated numerical techniques and far advanced mathematical tools. The paper presents an analytic-numerical method, especially attractive from the engineer’s point of view, applied for finding the approximate solutions of the selected class of problems which can be reduced to the one-phase solidification problem of a plate with the unknown a priori, varying in time boundary of the region in which the solution is sought. Proposed method is based on the known formalism of initial expansion of a sought function, describing the field of temperature, into the power series, some coefficients of which are determined with the aid of boundary conditions, and on the approximation of a function defining the freezing front location with the broken line, parameters of which are determined numerically. The method represents a combination of the analytical and numerical techniques and seems to be an effective and relatively easy in using tool for solving problems of considered kind.

Źródło:

Archives of Foundry Engineering; 2013, 13, 1; 33-38
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 42.

Tytuł:

Iterated Local Search for Foundry Lot-sizing and Scheduling Problem with Setup Costs

Autorzy:

Stawowy, A.
Duda, J.

Powiązania:

https://bibliotekanauki.pl/articles/379789.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
scheduling problem
production planning
local search heuristics
technologia informatyczna
przemysł odlewniczy
szeregowanie zadań
planowanie produkcji
wyszukiwanie lokalne

Opis:

The paper presents a novel Iterated Local Search (ILS) algorithm to solve multi-item multi-family capacitated lot-sizing problem with setup costs independent of the family sequence. The model has a direct application to real production planning in foundry industry, where the goal is to create the batches of manufactured castings and the sequence of the melted metal loads to prevent delays in delivery of goods to clients. We extended existing models by introducing minimal utilization of furnace capacity during preparing melted alloy. We developed simple and fast ILS algorithm with problem-specific operators that are responsible for the local search procedure. The computational experiments on ten instances of the problem showed that the presence of minimum furnace utilization constraint has great impact on economic and technological conditions of castings production. For all test instances the proposed heuristic is able to provide the results that are comparable to state-of-the art commercial solver.

Źródło:

Archives of Foundry Engineering; 2017, 17, 4; 161-164
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Design Options to Decrease the Thermal Stresses in Cast Accessories for Heat and Chemical Treatment Furnaces

Autorzy:

Bajwoluk, A.
Gutowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/380577.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
cast grate
thermal stress
heat treatment equipment
technologia informatyczna
przemysł odlewniczy
paleta odlewnicza
naprężenie termiczne
obróbka cieplna

Opis:

By the very nature of their work, castings used in furnaces for heat treatment and thermo-chemical treatment are exposed to the effect of many unfavorable factors causing their deformation and cracking, significantly shortening the lifetime. The main source of damage are the micro-and macro-thermal stresses appearing in each cycle. As the cost of furnace instrumentation forms a significant part of the total furnace cost, in designing this type of tooling it is important to develop solutions that delay the damage formation process and thus extend the casting operation time. In this article, two structural modifications introduced to pallets castings to reduce thermal stresses arising at various stages of the cooling process are proposed. The essence of the first modification consists in making technological recesses in the wall connections, while the aim of the second one is to reduce the stiffness of the pallet by placing expanders in the external walls. Using the results of simulation analyses carried out by the finite element method, the impact of both proposed solutions on the level of thermal stresses was evaluated.

Źródło:

Archives of Foundry Engineering; 2018, 18, 4; 125-130
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 44.

Tytuł:

Influence of the training set value on the quality of the neural network to identify selected moulding sand properties

Autorzy:

Jakubski, J.
Dobosz, S. M.
Major-Gabryś, K.

Powiązania:

https://bibliotekanauki.pl/articles/381338.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
quality management
green moulding sands
neural network
technologia informacyjna
przemysł odlewniczy
zarządzanie jakością
masa formierska
sieć neuronowa

Opis:

Artificial neural networks are one of the modern methods of the production optimisation. An attempt to apply neural networks for controlling the quality of bentonite moulding sands is presented in this paper. This is the assessment method of sands suitability by means of detecting correlations between their individual parameters. This paper presents the next part of the study on usefulness of artificial neural networks to support rebonding of green moulding sand, using chosen properties of moulding sands, which can be determined fast. The effect of changes in the training set quantity on the quality of the network is presented in this article. It has been shown that a small change in the data set would change the quality of the network, and may also make it necessary to change the type of network in order to obtain good results.

Źródło:

Archives of Foundry Engineering; 2013, 13, 2; 49-52
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 45.

Tytuł:

Identification of technologies in Industry 4.0 with the use of text mining

Autorzy:

Zdonek, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/1931589.pdf

Data publikacji:

2020

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

text mining
Industry 4.0
information and communication technology
scientific paper
eksploracja tekstu
Przemysł 4.0
technologie informacyjne i komunikacyjne
praca naukowa

Opis:

Purpose: The objective of this paper is to identify leading technologies in Industry 4.0. Design/methodology/approach: The identification was made with the use of text mining to explore the scientific texts in this field. Assumptions of own iterative method for analyzing scientific texts were proposed, with the use of R language, tokenization, lemmatization, n-grams and correspondence analysis. The assumptions of the proposed method were used to analyze the 40 most often quoted articles indexed in the Web of Science. Findings: On the basis of the obtained results, 4 leading technologies were identified. These are Cloud Computing, Internet of Things, Cyber-physical System and Big Data. Originality/value: The article proposes an original method of identifying the leading technologies used in Industry 4.0. The proposed method is based on text mining and correspondence analysis.

Źródło:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2020, 142; 45-57
1641-3466

Pojawia się w:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 46.

Tytuł:

The Implementation of Computer Platform for Foundries Cooperating in a Supply Chain

Autorzy:

Wilk-Kołodziejczyk, D.
Kluska-Nawarecka, S.
Rojek, G.
Regulski, K.

Powiązania:

https://bibliotekanauki.pl/articles/382875.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology
foundry industry
innovative foundry technologies
innovative materials
multi-agent technology
production support
zastosowanie technologii informatycznych
przemysł odlewniczy
innowacyjne technologie odlewnicze
materiały innowacyjne
wsparcie produkcji

Opis:

This article presents a practical solution in the form of implementation of agent-based platform for the management of contracts in a network of foundries. The described implementation is a continuation of earlier scientific work in the field of design and theoretical system specification for cooperating companies [1]. The implementation addresses key design assumptions - the system is implemented using multi-agent technology, which offers the possibility of decentralisation and distributed processing of specified contracts and tenders. The implemented system enables the joint management of orders for a network of small and medium-sized metallurgical plants, while providing them with greater competitiveness and the ability to carry out large procurements. The article presents the functional aspects of the system - the user interface and the principle of operation of individual agents that represent businesses seeking potential suppliers or recipients of services and products. Additionally, the system is equipped with a bi-directional agent translating standards based on ontologies, which aims to automate the decision-making process during tender specifications as a response to the request.

Źródło:

Archives of Foundry Engineering; 2014, 14, 3; 111-116
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 47.

Tytuł:

A Method to Make Classification of the Heat Treatment Processes Performed on Bronze Using Incomplete Knowledge

Autorzy:

Kluska-Nawarecka, S.
Górny, Z.
Regulski, K.
Wilk-Kołodziejczyk, D.
Jančíková, Z.
David, J.

Powiązania:

https://bibliotekanauki.pl/articles/947501.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
heat treatment
classification algorithms
rough sets
data mining
technologia informacyjna
przemysł odlewniczy
obróbka cieplna
algorytmy klasyfikacyjne
zbiory przybliżone

Opis:

The article describes the problem of selection of heat treatment parameters to obtain the required mechanical properties in heat- treated bronzes. A methodology for the construction of a classification model based on rough set theory is presented. A model of this type allows the construction of inference rules also in the case when our knowledge of the existing phenomena is incomplete, and this is situation commonly encountered when new materials enter the market. In the case of new test materials, such as the grade of bronze described in this article, we still lack full knowledge and the choice of heat treatment parameters is based on a fragmentary knowledge resulting from experimental studies. The measurement results can be useful in building of a model, this model, however, cannot be deterministic, but can only approximate the stochastic nature of phenomena. The use of rough set theory allows for efficient inference also in areas that are not yet fully explored.

Źródło:

Archives of Foundry Engineering; 2014, 14, 2; 69-72
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 48.

Tytuł:

Virtual factory as a method of foundry design and production management

Autorzy:

Stawowy, A.
Wrona, R.
Brzeziński, M.
Ziółkowski, E.

Powiązania:

https://bibliotekanauki.pl/articles/383269.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
automation in foundry
robotics in foundry
virtual factory design
technologia informacyjna
przemysł odlewniczy
automatyka w odlewnictwie
robotyka w odlewnictwie

Opis:

The paper outlines the methodology of virtual design of a foundry plant as a system. The most important stage in the procedure involves the development of a model defined as a set of data about the system. Model development involves two stages: defining the model’s architecture and specifying the model data in the form of parameters and input-output relationships. The structure is understood as configuration of machines and transport units, representing the sub-systems and system components. As the main purpose of the simulation procedure is to find the characteristics of the system’s behaviour, the merits of the iterative method involving analysis, synthesis and evaluation of results are fully explored.

Źródło:

Archives of Foundry Engineering; 2013, 13, 1; 113-118
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 49.

Tytuł:

Multi-Criterion Assessment of Different Variants of Casts Manufacturing Processes

Autorzy:

Kukla, S.

Powiązania:

https://bibliotekanauki.pl/articles/381235.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

application of information technology
foundry industry
automation in foundry
robotics in foundry
zastosowanie technologii informatycznych
przemysł odlewniczy
automatyka w odlewnictwie
robotyka w odlewnictwie

Opis:

The paper presents the issue of production processes improvement in foundries in the area of finishing treatment of iron casts manufactured on automated foundry lines with vertical or horizontal mould division. Due to numerous factors which influence the efficiency of the processes, multi-criterion assessment tools were proposed in order to select the optimal solution for the assumed criteria. After determining the criteria weight using the Saaty method, a simulation experiment was designed and carried out which presents possible scenarios of casts finishing treatment operations. Basing on experiment reports from a computer model, particular solutions were evaluated using the Yager’s method. The evaluation of the experiment results was performed by experts who assessed different options according to each of the criteria adopted. After the establishment of the total standardized ratings by averaging the scores given by individual experts, the final decision was generated. Using the presented method, the best solution was chosen from among the analyzed scenarios.

Źródło:

Archives of Foundry Engineering; 2014, 14, 3; 47-50
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 50.

Tytuł:

The framework of agent-based negotiation platform for foundries cooperating in supply chain

Autorzy:

Kluska-Nawarecka, S.
Regulski, K.
Rojek, G.

Powiązania:

https://bibliotekanauki.pl/articles/379687.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

information technology
foundry industry
innovative foundry technologies
innovative foundry materials
ontology
agent technology
production support
technologia informacyjna
przemysł odlewniczy
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
ontologia
technologia agentowa
wspomaganie produkcji

Opis:

This paper concerns the domain of contracts in the metallurgy and heavy industry, that are the form of deals making between cooperating companies being suppliers and consumers of some goods. From a general point of view cooperation enables for small companies to realize orders that are too large for an individual producer, but contract negotiations, further scheduling and support of production are usually too difficult and complicated. This paper presents a proposition of an information system, that should make cooperation between companies more available. Such system should be distributed among cooperating producers, what is the reason for choosing of the agent technology as the main software paradigm. This system should also support interchanging of information in many norms and technical standards, what results in the use of ontology concerning metallurgy and heavy industry.

Źródło:

Archives of Foundry Engineering; 2013, 13, 4; 73-78
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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