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Wyszukujesz frazę "optimization process" wg kryterium: Temat


Tytuł:
A dedicated sensitivity analysis and optimization application for industrial processes
Autorzy:
Myczkowska, Kamila
Szeliga, Danuta
Powiązania:
https://bibliotekanauki.pl/articles/29520087.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
sensitivity analysis
modelling of industrial process
optimization
model validation
cooling of rails
Opis:
The paper describes the architecture and the use case of the developed Modelbox system for sensitivity analysis (SA), uncertainty analysis (UA) and the subsequent optimization of industrial processes. The proposed solution addresses the most common practical and technical problems encountered by researchers and engineers when performing sensitivity analysis. It combines the functions from the numerical toolbox with a simulation management system. Maintaining usability and a good user experience while managing complex investigations of time-consuming industrial process simulations is a very important feature of the system. Several improvements were introduced to optimize the computation time of analysis/modelling tasks, including the automatization of distributed calculations, persistent, transparent caching of simulation data and duration estimations from collected statistics. The system has the ability to perform remote, parallel, asynchronous computations of both analytic algorithms and numerical simulations. The system is dynamically scalable horizontally by using serverless computing endpoints and thus it can be easily adapted to the user’s current needs in a flexible way. Modelbox provides web-based access to analysis/modelling tasks from sampling, SA/UA, optimization to metamodelling. It is extended with numerous interactive visualization components for effective results control. In addition, to access data from the completed analysis, the system supports convergence tracking for SA estimates and intermediate optimization results. The process of controlled cooling of rails was considered as a case study. The formulated optimization task was to find a combination of process parameters that ensures a minimum volume fraction of bainite along with required interlamellar spacing and optimal homogeneity of hardness. Different sensitivity analysis methods were used to evaluate the significance of all variables with respect to their influence on the model output.
Źródło:
Computer Methods in Materials Science; 2021, 21, 4; 219-232
2720-4081
2720-3948
Pojawia się w:
Computer Methods in Materials Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Goal Programming-Monte Carlo Simulation Methodology for Modeling Process Quality Control
Autorzy:
Morán-Zabala, Jean P.
Cogollo-Flórez, Juan M.
Powiązania:
https://bibliotekanauki.pl/articles/24200525.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
goal programming
Monte Carlo simulation
process optimization
process simulation
process quality profiling
quality control modeling
Opis:
Quality profiling seeks to know the quality characteristics of products and processes to improve customer satisfaction and business competitiveness. It is required to develop new techniques and tools that upgrade and complement the traditional analysis of process variables. This article proposes a new methodology to model quality control of the process and product quality characteristics by applying optimization and simulation tools. The application in the production process of carbonated beverages allowed us to identify the most influential variables on the gas content and the degrees Brix of beverage.
Źródło:
Management and Production Engineering Review; 2023, 14, 2; 70--78
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A hierarchical decomposition of decision process Petri nets for modeling complex systems
Autorzy:
Clempner, J.
Powiązania:
https://bibliotekanauki.pl/articles/907753.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
hierarchia
rozkład
składnik wielokrotnego użycia
proces decyzyjny
stabilność
optymalizacja
metoda Lyapunova
DPPN
hierarchy
decomposition
structuring mechanisms
re-usable components
decision process
stability
Lyapunov methods
optimization
Opis:
We provide a framework for hierarchical specification called Hierarchical Decision Process Petri Nets (HDPPNs). It is an extension of Decision Process Petri Nets (DPPNs) including a hierarchical decomposition process that generates less complex nets with equivalent behavior. As a result, the complexity of the analysis for a sophisticated system is drastically reduced. In the HDPPN, we represent the mark-dynamic and trajectory-dynamic properties of a DPPN. Within the framework of the mark-dynamic properties, we show that the HDPPN theoretic notions of (local and global) equilibrium and stability are those of the DPPN. As a result in the trajectory-dynamic properties framework, we obtain equivalent characterizations of that of the DPPN for final decision points and stability. We show that the HDPPN mark-dynamic and trajectory-dynamic properties of equilibrium, stability and final decision points coincide under some restrictions. We propose an algorithm for optimum hierarchical trajectory planning. The hierarchical decomposition process is presented under a formal treatment and is illustrated with application examples.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2010, 20, 2; 349-366
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A mathematical model to optimize the pilot training process
Autorzy:
Woch, M.
Zieja, M.
Głyda, K.
Tomaszewska, J.
Kamiński, G.
Powiązania:
https://bibliotekanauki.pl/articles/2068739.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
optimization of process
pilot training
risk assessment
Opis:
In most NATO countries, pilots are prepared in accordance with a modern system of three-stage training: selection, basic and advanced. For each phase, the purpose and scope of the training shall be defined and the aviation equipment together with training support systems should be appropriate selected. The practical training in the air is performed according to the parallelism of the training, which describes the technological relationships between the individual exercises. The purpose of this contribution is to propose a mathematical model which would enable the selection of exercises for each pilot, the appropriate selection of the aircraft and the moment of beginning of each exercise, so that all required exercises are carried out in the shortest possible time. Additionally, in this paper the concept of pilot’s habits and skills improvements is presented.
Źródło:
Journal of Polish Safety and Reliability Association; 2018, 9, 3; 109--114
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new method for analytic determination of extremum of the transients in linear systems
Autorzy:
Górecki, H.
Powiązania:
https://bibliotekanauki.pl/articles/970346.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
równanie przestępne
układ stacjonarny liniowy
optymalizacja parametryczna
formułka obliczeniowa
wyróżnik funkcji wykładniczej
wyznacznik Vandermondesa
wzór Vietesa
transcendental equations
extremal dynamic error
linear stationary system
parametric optimization
analytic formulae
discriminants of exponential functions
Vandermonde's determinant
Viete's formulae
process control
Opis:
The relation between extremal values of the error and the coefficients of its differential equations is one of the central problems of control systems in chemical industry, because extremal values of the error sometimes cause serious damages to the environment or to the system itself. Analytical formulae for the determination of these values are known only for the second-order systems. In this paper a method which permits to determine extremal values of the error in higher-order systems is proposed.
Źródło:
Control and Cybernetics; 2004, 33, 2; 275-295
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Performance Study on Synchronous and Asynchronous Update Rules for A Plug-In Direct Particle Swarm Repetitive Controller
Autorzy:
Ufnalski, B.
Grzesiak, L. M.
Powiązania:
https://bibliotekanauki.pl/articles/141272.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
repetitive process control
particle swarm optimization (PSO)
synchronous and asynchronous update rules
dynamic optimization problem
repetitive disturbance rejection
optimal control
Opis:
In this paper two different update schemes for the recently developed plug-in direct particle swarm repetitive controller (PDPSRC) are investigated and compared. The proposed approach employs the particle swarm optimizer (PSO) to solve in on-line mode a dynamic optimization problem (DOP) related to the control task in the constant-amplitude constant-frequency voltage-source inverter (CACF VSI) with an LC output filter. The effectiveness of synchronous and asynchronous update rules, both commonly used in static optimization problems (SOPs), is assessed and compared in the case of PDPSRC. The performance of the controller, when synthesized using each of the update schemes, is studied numerically.
Źródło:
Archives of Electrical Engineering; 2014, 63, 4; 635-646
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aktualne zagadnienia niezawodności i bezpieczeństwa systemów technicznych
Current problems of technical systems reliability and safety
Autorzy:
Kołowrocki, K.
Soszyńska-Budny, J.
Powiązania:
https://bibliotekanauki.pl/articles/2069729.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
complex system
reliability
safety
operation process
evaluation
prediction
optimization
system złożony
niezawodność
bezpieczeństwo
proces eksploatacji
ocena
predykacja
optymalizacja
Opis:
Integrated Safety and Reliability Decision Support System - IS&RDSS is presented in the form of detailed and clear scheme-algorithm. There is also presented the methodology of IS&RDSS that is composed of the methods of complex technical systems operation processes modelling, their unknown parameters concerning operation, reliability, availability, safety models identification, their reliability, availability and safety evaluation and prediction, their reliability, availability and safety improvement and their operation, reliability, availability, safety and cost optimization. The newest trends in the reliability and safety of complex technical systems analysis directed to the critical infrastructures and the nanosystems are describe as well.
Źródło:
Journal of Polish Safety and Reliability Association; 2011, 2, 3; 1--8
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza opłacalności zamkniętych poolingów paletowych w przedsiębiorstwie xyz
The analysis of the profitability of use closed pallet pools in selected company
Autorzy:
Frątczak, Klaudia
Mistrzak, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/1194497.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
pooling paletowy
oszczędności
optymalizacja procesów
pallets pool
savings
process optimization
Opis:
Authors of the lecture noticed huge potential of using closed pallets pools. The solution offers a lot of advantages for suppliers and recipients. In order to determine profitability, thesuggested solutions the authors made measurements in one of the warehouse company from the FMCG industry. The authors compared the times of operations using existing pallets and pallets from closed pallets pools.
Źródło:
Journal of TransLogistics; 2019, 5, 1; 131-142
2450-5870
Pojawia się w:
Journal of TransLogistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the impact of effective time management on workstation efficiency using a multi-criteria optimization approach
Autorzy:
Krynke, Marek
Powiązania:
https://bibliotekanauki.pl/articles/27315561.pdf
Data publikacji:
2023
Wydawca:
STE GROUP
Tematy:
process management
simulation
FlexSim
optimization
Opis:
The aim of the article is to analyze the impact of effective time management on the performance of workstations in the context of the conflict between maximizing workstation utilization and minimizing the number of items waiting in the queue. The article utilized the FlexSim program to build a simulation model of the workstation and conducted optimization using the built-in optimizer. The research demonstrated that effective time management has a positive impact on workstation performance by reducing the number of items waiting in the queue, leading to increased throughput and reduced delays in production processes. An important aspect of the analysis was the application of a multi-criteria optimization approach, which allowed for achieving a balance between maximizing workstation utilization and minimizing the number of items waiting. Multi-criteria optimization considers diverse goals and decision criteria, leading to a more comprehensive approach to optimizing production processes. As a result, effective time management on workstations, based on analysis and multi-criteria optimization, can significantly improve the efficiency and performance of production processes. This analysis can be a valuable tool for organizations seeking to optimize their processes and achieve a competitive advantage in the market. The analysis conducted in the article confirms that effective time management has a beneficial impact on workstation performance. The use of a multi-criteria approach in optimization enables achieving a balance between various decision factors. The presented simulation model and research results can be useful for decision-makers in the manufacturing field who aim to make more informed decisions regarding planning and optimizing production processes to enhance efficiency, effectiveness, and customer satisfaction.
Źródło:
Management Systems in Production Engineering; 2023, 3 (31); 306--311
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical Model of the Optimal Capacity of an Irrigation System
Analityczny model optymalnej wydajności systemu nawadniania
Autorzy:
Palkova, Z.
Rodny, T.
Powiązania:
https://bibliotekanauki.pl/articles/298215.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
system nawadniania
teoria kolejkowania
model analityczny
optymalizacja procesu
irrigation system
queuing theory application
analytical model
process optimization
Opis:
The size and stability of yield per hectare of agricultural crops are greatly affected by climatic conditions, temperature, solar radiation, but especially the quantity and quality of rainfall, which for most agricultural crops is insufficient. Building large-scale irrigation systems is difficult in terms of investment, as well as operating costs. Claimed agricultural yields often do not emanate from a set of certain claims for each of the crops, but are only an estimate based upon empirical experience. Precise determination of these data is very difficult and without the use of exact mathematical methods and information technology would be virtually impossible. Goal of this project is dedicated to enhance of an irrigation system analytical model usability, which would allow the determination of the optimal capacity of the irrigation system in response to microclimate and soil conditions with respect to the crops and irrigation facilities. Developing new methods of precise irrigation is the way of higher and ecological productivity in agricultural production subsystem.
Wielkość oraz stabilność plonu z hektara uprawianego pola w dużej mierze zależy od warunków klimatycznych, temperatury, promieniowania słonecznego, ale w szczególny sposób od jakości oraz ilości opadów deszczowych. Opady te dla większości upraw rolniczych są niewystarczające. Oszacowanie wydajności systemu nawadniania nie wynika zatem jedynie z zapotrzebowania na wodę uprawianych roślin, lecz także zależy od czynników losowych - mikroklimatycznych. Aktualnie wydajność systemu nawadniania, wielkości jedynie przybliżonej, szacuje się często na podstawie doświadczeń empirycznych. Dokładne określenie wydajności systemu nawadniania jest bardzo trudne i praktycznie niemożliwe bez zastosowania dokładnych metod matematycznych oraz technologii informatycznych. Celem pracy było zwiększenie użyteczności matematycznego modelu systemu nawadniania, co powinno pozwolić na określenie optymalnej wydajności systemu nawadniania w zależności od mikroklimatu i warunków gruntowych, z uwzględnieniem upraw oraz urządzeń nawadniających.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2011, 14(1); 23-31
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of a computer tool monitoring system in CNC machining centres
Autorzy:
Kolny, D.
Więcek, D.
Ziobro, P.
Krajčovič, M.
Powiązania:
https://bibliotekanauki.pl/articles/117808.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
current process control
tool wear
monitoring system
process optimization
kontrola procesu
zużycie narzędzia
system monitorujący
optymalizacja procesu
Opis:
The article presents practical knowledge about production process optimisation as a result of implementing a specialized system monitoring the work of machining tools. It features complex results of the conducted research with use of dedicated equipment and software, whose unconventional application may appear to be an effective IT tool for taking operational and strategic decisions in the machining area. This results from the possibility of analysing the obtained data in both current and long-term perspective, and taking decisions on this basis, which significantly conditions the rationality of using this type of solutions.
Źródło:
Applied Computer Science; 2017, 13, 4; 7-19
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of a modified method of humic acids extraction as an efficient process in the production of formulations for agricultural purposes
Autorzy:
Nieweś, Dominik
Marecka, Kinga
Braun-Giwerska, Magdalena
Huculak-Mączka, Marta
Powiązania:
https://bibliotekanauki.pl/articles/27315662.pdf
Data publikacji:
2023
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Humic acids (HA)
Peat
Ultrasound-assisted extraction
Fertilizers
Process optimization
Opis:
Due to their properties, humic acids (HA) can interact with macro- and micronutrients and retain plant nutrients in the soil profile. The aim of the presented work was to develop a new integrated 4-step process for the isolation of humic acids from peat with their simultaneous enrichment in macronutrients. The study demonstrated the possibility of replacing traditional solutions used in the extraction of humic acids with solutions that are a source of macronutrients. For the alkaline extraction step, a process assisted with ultrasound was implemented, which allowed to increase the efficiency of humic acids isolation. Optimization of this step has shown that, with the application of ultrasound in the new procedure, it is possible to obtain the humic acids isolation efficiency of more than 60%. The qualitative analysis of the products obtained confirmed the presence of structures characteristic of humic acids, including key functional groups.
Źródło:
Polish Journal of Chemical Technology; 2023, 25, 3; 31--39
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of IS/IT, process and constraint management in optimization of business processes
Autorzy:
Basl, J.
Powiązania:
https://bibliotekanauki.pl/articles/117962.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
information system
enterprise information system
enterprise resource planning (ERP)
business process optimization
constraint management
Opis:
The paper deals with business process based on the IS/ICT (information systems, information and communication technology) applications, mainly ERP (Enterprise Resource Planning) and APS (Advanced Planning and Scheduling) software packages, process and constraint management. The analysis of the current ERP and APS offer in the Czech market is presented. The second part of the paper deals with the principles of the innovation of IS/ICT in enterprise and with the approaches to the its effectiveness
Źródło:
Applied Computer Science; 2005, 1, 1; 93-106
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of lean methods – a business game study in German companies
Autorzy:
Poetters, Patrick
Schmitt, Robert
Leyendecker, Bert
Powiązania:
https://bibliotekanauki.pl/articles/406774.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lean method
business game
process optimization
two proportions test
paired t-test
Opis:
Production companies face the challenge of choosing a suitable process optimization method from a variety of methods, even though their effect on operational processes is uncertain. This study shows, using a statistical hypothesis test, the impact of the methods Kanban and Standard Worksheet on an autonomous team in comparison to a team that applies these methods. For this purpose, 44 companies – of different size and operating in various industries – across Germany completed a business game and generated data regarding the KPIs adherence to delivery date, number of reworks and inventory costs. Based on these data, the team’s performance could be ascertained and compared with each other.
Źródło:
Management and Production Engineering Review; 2020, 11, 2; 3-10
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of multi-valued weighting logical functions in the analysis of a degree of importance of construction parameters on the example of hydraulic valves
Autorzy:
Deptuła, A.
Powiązania:
https://bibliotekanauki.pl/articles/955221.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
pompa
zawór hydrauliczny
optymalizacja
optimization process
weighting logical coefficients
hydraulic valves
pomps
Opis:
In the optimization process, changes in the construction parameters value influence the behaviour of functions depending on time. Weighting logical coefficients for the stabilisation time are taken into consideration here, i.e., a shorter (better) stabilisation time has a more important (bigger) value of the weighting coefficient. An example of applying weighting logical functions in the analysis of a degree of importance of construction parameters of a hydraulic valve is presented in the paper.
Źródło:
International Journal of Applied Mechanics and Engineering; 2014, 19, 3; 539-548
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł

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