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Wyświetlanie 1-15 z 41
Tytuł:
Optimization potential transport of transport company
Autorzy:
Konopacki, G.
Powiązania:
https://bibliotekanauki.pl/articles/94791.pdf
Data publikacji:
2017
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
transport potential
stochastic process
multicriteria optimization
Opis:
The article presents a method for determining the optimum number of vehicles transport company, depending on the size of the specific demand for transport services and depending on the performance properties of means of transport. Formulated the task of multi-criteria optimization and presents the results of its solution.
Źródło:
Information Systems in Management; 2017, 6, 1; 14-25
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multicriteria optimization of sandwich cylindrical panels under axial compressive loads
Wielokryterialna optymalizacja trójwarstwowej paneli walcowej przy osiowym ściskaniu
Autorzy:
Kasperska, R.
Ostwald, M.
Powiązania:
https://bibliotekanauki.pl/articles/281479.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
multicriteria optimization
sandwich shell
Pareto optimum
Opis:
The aim of this paper is to present the bicriteria optimization model of a sandwich cylindrical panel under axial compression. The objective functions are the weight and panel deformability. The deformability is defined as the panel bending rigidity reciprocal, and it represents some qualitative measure of the panel deflections. the design variables are the thicknesses of the layers. The constrains include a stability condition, stress conditions, the validation of theoretical models, and finally, technological and constructional requirements. The problem was solved with the help of Pareto's concept of optimality, with continuous and discrete sets of the design variables. Results of numerical calculations are presented in the form of tables and diagrams. A comparison of the optimal parameters for the unilayer and the sandwich panels is presented.
W pracy sformułowano model dwukryterialnej optymalizacji cienkościennej trójwarstwowej paneli walcowej obciążonej osiowymi siłami ściskającymi. Kryteriami optymalizacyjnymi są masa paneli i jej podatność na odkształcenia. Podatność paneli, zdefiniowana jako odwrotność sztywności na zginanie, jest jakościową miarą odkszałcalności konstrukcji. Zmiennymi decyzyjnymi są grubości warstw paneli. Warunkami ograniczającymi są warunek stateczności, warunki wytrzymałościowe, warunek ważności stosowanych modeli teoretycznych oraz warunki technologiczno-konstrukcyjne. Zadanie rozwiązano w oparciu o koncepcję optimum Pareto, uwzględniając dyskretne i ciągłe zbiory zmiennych decyzyjnych. Wyniki obliczeń numerycznych przedstawione są w postaci tabel i wykresów. Porównano optymalne parametry paneli jedno- i trójwarstwowych.
Źródło:
Journal of Theoretical and Applied Mechanics; 2002, 40, 2; 371-388
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fitting baseload and peakload futures contracts to future planned energy demand
Autorzy:
Kudyba, Dominik
Powiązania:
https://bibliotekanauki.pl/articles/584998.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
electricity
hedging
multicriteria optimization
electricity futures contracts
Opis:
In connection with the ongoing process of liberalization in the Polish electricity market, customer orientation and its needs are becoming an important competitive advantage of electricity trading companies. The aim of this article is an attempt to present and solve the problem of fitting baseload and peakload futures contracts to future planned energy demand as a multicriteria programming problem. Due to the large number of variables and nonsmooth criteria the Monte Carlo simulation was used to solve the problem. The model has been built to minimize price and imbalance volume between future planned demand and standard products able to purchase on the Polish commodity market. Due to future SPOT, the settlement simulation model requires future SPOT prices.
Źródło:
Mathematical Economics; 2013, 9 (16); 29-38
1733-9707
Pojawia się w:
Mathematical Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of multi-criteria optimisation in marina planning on the Montenegrin coast
Autorzy:
Tomovic, S.
Sekulic, G.
Powiązania:
https://bibliotekanauki.pl/articles/258634.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marina location
multicriteria optimization
criterion functions
ecology
Opis:
Development of nautical tourism in Montenegro, seen as a potentially profitable industry segment has started twenty years ago. The first steps taken in this direction were defining the legal framework, in particular: Law on Coastal Zone, Tourism Master Plan of Montenegro, Law on Yachts, followed by establishment of supporting organizations - Maritime Safety Department of Montenegro, Port Authorities and Border Police Department. Having invested efforts in adoption of planning documents and enactment of legislation relating to nautical tourism in recent period, Montenegro is seeking to impose itself as an important nautical destination. The first serious step towards achieving this goal was construction of a world-class marina Porto Montenegro in Tivat in 2010. The Special Purpose Spatial Plan for Coastal Zone provides for development of network of marinas to be constructed on the Montenegrin Coast. In the light of this, contribution of this paper is reflected in application of multi-criteria optimization in defining an optimum order of marina construction. The paper defines selection of criterion functions from the aspects of ecology, economy, security, specific aspect and aspect of suitability assessment for the location. The paper also presents the process of defining different criterion weights. The multi-criteria analysis determines a compromise solution for marina planning at Montenegrin Coast, which reconciles conflicting interests. The compromise solution is only a proposal, while a final decision remains with a decision maker.
Źródło:
Polish Maritime Research; 2014, 2; 86-90
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of incentive compatible decisions in a multicriteria auction
Autorzy:
Kruś, L.
Skorupiński, J.
Toczyłowski, E.
Powiązania:
https://bibliotekanauki.pl/articles/406461.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
multicriteria auction
incentive compatible decisions
multi-agent systems
multicriteria optimization
Opis:
An iterative multicriteria closed-auction conducted with the use of a multi-agent computer-based system is analyzed. This system supports the submission of offers, multicriteria analysis carried out by the organizer of the auction, simulation, and analysis of the behavior of competing bidders. Analysis of incentive compatible decisions is the main subject of this research. A mathematical formulation of the decision making problem and selected results of a bidding session conducted using this system are presented and analyzed.
Źródło:
Operations Research and Decisions; 2013, 23, 3; 23-33
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the knapsack problem to reliability multi-criteria optimization
Autorzy:
Guze, S.
Powiązania:
https://bibliotekanauki.pl/articles/2069486.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
multicriteria optimization
reliability
knapsack problem
genetic algorithms
SPEA
Opis:
The main aim of the paper is to translate reliability problems to the knapsack optimization problem. The review of the known methods of multi-criteria optimization is done. Particularly, the SPEA algorithm is presented. Furthermore, the 0-1 knapsack problem solution by SPEA algorithm is introduced and used to the reliability optimization of exemplary parallel-series system.
Źródło:
Journal of Polish Safety and Reliability Association; 2014, 5, 1; 85--90
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the method of data reconciliation for minimizing uncertainty of the weight function in the multicriteria optimization model
Autorzy:
Mendecka, B.
Kozioł, J.
Powiązania:
https://bibliotekanauki.pl/articles/240361.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multicriteria optimization
weight uncertainty
photovoltaics
optymalizacja wielokryterialna
fotowoltaika
Opis:
The multicriteria decision process consists of five main steps: definition of the optimisation problem, determination of the weight structure of the decision criteria, design of the evaluation matrix, selection of the optimal evaluation method and ranking of solutions. It is often difficult to obtain the optimal solution to a multicriterion problem. The main reason is the subjective element of the model – the weight functions of the decision criteria. Expert opinions are usually taken into account in their determination. The aim of this article is to present a novel method of minimizing the uncertainty of the weights of the decision criteria using Monte Carlo simulation and method of data reconciliation. The proposed method is illustrated by the example of multicriterion social effectiveness evaluation for electric power supply to a building using renewable energy sources.
Źródło:
Archives of Thermodynamics; 2015, 36, 1; 83-92
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy trading system on the forex market for deriving the portfolio of instruments
Autorzy:
Juszczuk, Przemysław
Kruś, Lech
Powiązania:
https://bibliotekanauki.pl/articles/31342748.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
trading system
forex market
fuzzy sets
multicriteria optimization
Opis:
Decision support and trading systems for the forex market mostly derive a single signal for the decision-maker. This is so, because instruments are evaluated based on a single criterion, which creates a ranking of instruments, from which the best one is selected. At the same time, one can observe a lack of tools al- lowing one to derive the set of non-dominated trading opportunities considered in the multicriteria space. This article focuses on multicriteria analysis, in which several different market indicators describe a single instrument on the forex market (currency pair), leading to definite criteria. Thus, for a given time horizon, we consider a set of currency pairs described by a group of technical market indicators in every trading session. However, instead of deriving crisp information, based on the buy-no buy binary logic, we use concepts from the fuzzy sets theory, in which each criterion for a single variant takes a value from the h0, 1i interval. We select only the non-dominated variants from such a set, which will be used as elements of the portfolio of currency pairs on the forex market. We test our idea on the real-world data covering more than ten years, several technical market indicators, and over twenty different currency pairs. The preliminary results show that the proposed idea can be treated as a promising concept for deriving a portfolio of currency pairs instead of focusing on only a single currency pair.
Źródło:
Control and Cybernetics; 2022, 51, 4; 467-486
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cyclic scheduling and diophantine problems
Autorzy:
Bocewicz, G.
Bzdyra, K.
Banaszak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/118273.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
diophantine problem
cyclic scheduling
time-table
multicriteria optimization
Opis:
Cyclic scheduling concerns both kinds of questions following the deductive and inductive ways of reasoning. First class of problems concentrates on rules aimed at resources assignment as to minimize a given objective function, e.g. the cycle time, the flow time of a job. In turn, the second class focuses on a system structure designing as to guarantee the assumed qualitative and/or quantitative measures of objective functions can be achieved. The third class of problems can be seen, however as integration of earlier mentioned, i.e. treating design and scheduling or design and planning simultaneously. The complexity of these problems stems from the fact that system configuration must be determined for the purpose of processes scheduling, yet scheduling must be done to devise the system configuration. In that context, the contribution provides discussion of some Diophantine problems solubility issues, taking into.
Źródło:
Applied Computer Science; 2009, 5, 1; 11-25
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multicriteria optimization of manufacturing processes taking into account the validity criteria
Autorzy:
Plonka, S.
Lorek, L. R.
Powiązania:
https://bibliotekanauki.pl/articles/99875.pdf
Data publikacji:
2016
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
multicriteria optimization
manufacturing processes
manufacturing cost
product quality
Opis:
In the paper a method is presented of the best variant selection of a manufacturing process of a rotor to open end spinning machine with use of original optimization proceeding based on adopted criteria, taking into consideration their importance. Unit manufacturing cost and five criteria of manufacturing quality were taken as criteria to the assessment. The assessment criteria resulted from calculations and measurements were normalized. Knowledge of experts was used to determine importance of the criteria taken to the assessment. Each from the experts had built his own importance matrix of the assessment criteria, comparable in pairs, using the Saaty’s method. The weights of individual criteria were determined on the basis of cumulative matrix. In the next stage of the proceeding, normalized decisions were created by raising each assessment to a power equal to corresponding weight. In the last stage of the proceeding, a single optimal ordering comprising the smallest s-th components of the individual decisions d1, d2, …, dm was created. A variant which corresponds to the largest component of the optimal ordering is assumed as the best variant.
Źródło:
Journal of Machine Engineering; 2016, 16, 4; 31-48
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of pareto efficiency and weighted objectives method to solve the multi-criteria vehicle routing problem using the artificial immune system
Autorzy:
Mrówczyńska, B.
Powiązania:
https://bibliotekanauki.pl/articles/117687.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
multicriteria optimization
Pareto efficiency
vehicle routing problem
artificial immune system
Opis:
The solutions to the multi-criteria vehicle routing problem, dependent on route length and travelling time of delivery van, are presented in the paper. This type of problem is known as a traveling salesman problem. The artificial immune system is used to solve it in this article. Since there are two variables – route length and travelling time – two methods are employed. They are: Weighted Objectives Method and Pareto Efficiency Method. The results of calculation are compared.
Źródło:
Applied Computer Science; 2016, 12, 4; 78-87
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja parametrów aplikacji w procesie wytwarzania oprogramowania dla big data
Optimization of big data application attributes considering software development process
Autorzy:
Kaczmarek, P.
Powiązania:
https://bibliotekanauki.pl/articles/267665.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
optymalizacja wielokryterialna
big data
integracja oprogramowania
multicriteria optimization
software integration
Opis:
Wytwarzanie oprogramowania wiąże się z szeregiem decyzji projektowych obejmujących architekturę aplikacji, wykorzystywane technologie implementacji, jak i zewnętrzne biblioteki. W pracy przedstawiono metodę wyboru technologii i bibliotek związanych z big data, której celem jest optymalizacja atrybutów aplikacji takich jak wydajność działającej aplikacji jak również optymalizacja procesu wytwarzania oprogramowania. Metoda wyboru obejmuje identyfikację parametrów bibliotek, określenie ograniczeń i celu optymalizacji. Na podstawie tych danych następuje ocena alternatywnych rozwiązań i wybór optymalnego wykorzystując metody optymalizacji wielokryterialnej. W kontekście zaproponowanej metody opisano wybrane systemy wspomagające.
During software development, effective design decisions must be made considering application architecture, development technology and integration of external libraries. The paper presents a method of selection of big data technologies and libraries. The purpose of the method is optimization of application attributes such as performance as well as optimization of the software development process. The method covers identification of library parameters, specification of application constraints and definition of optimization purpose. Considering gathered information, alternative development options are rated and optimal solution is selected using multicriteria optimization methods. Selected big data supporting systems were described in the context of the proposed method.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2015, 46; 61-64
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-criteria optimization of steel burnishing parameters applied to marine pumps shaft pins
Autorzy:
Charchalis, A.
Starosta, R.
Labuda, W.
Powiązania:
https://bibliotekanauki.pl/articles/243937.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
multicriteria optimization
burnishing
stainless steel
surface layer
angular momentum pumps
Opis:
The paper presents the research results of the possibilities of applying burnishing as steel finishing treatment for marine pumps shafts. X5CrNil810 (AISI304 L) corrosion resistant steel in the form of a roller 40 mm m diameter was used for the research. The burnishing process was carried out by SRMD single roll burnish by Yamato. During the process of burnishing various parameters of the technological process were used, that is burnishing force, speed and feed. Within the research, the optimization of burnishing technological parameters was conducted on account of the minimalization of Ra coefficient as we 11 as the maximalization of Su. The Slt coefficients values determining the degree of relative hardness of surface layer varied depending on the burnishing parameters applied and fluctuated around l% to 18%. However, the values of KRa coefficients defining the surface roughness reduction index were in the range of l to 15 as a result of burnishing. The object of the paper was to determine the optima! burnishing parameters in order to achieve the highest level of surface layer relative hardness and to decrease the surface roughness of marine pumps shaft pins made of stainless steel. The multi-criteria optimization conducted with the use of min-max method demonstrated that with regard to maximum surface hardness level, burnishing should be carried out at the following parameters of the technological process: burnishing force 1.1 kN, burnishing speed 35 m/min and feed 0.13 mm/rev.
Źródło:
Journal of KONES; 2010, 17, 3; 55-62
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-criteria models of player’s preferences in investment process
Wielokryterialne modele preferencji graczy giełdowych w procesie inwestowania
Autorzy:
Michałowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/305990.pdf
Data publikacji:
2014
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
giełda
modele zachowań
optymalizacja wielokryterialna
stock market
behavior models
multicriteria optimization
Opis:
The paper presents model of stock market players’ preferences in investing process, based on different conditions like the method for valuation financial instruments, player’s character traits including tendency to risk and investing strategies. Author also defined multi-criteria optimization amongst all available decisions, one or many the most important for the player.
W artykule przedstawiono model preferencji graczy giełdowych w procesie inwestowania, opierając się na zróżnicowanych przesłankach, jak użyta metoda wyceny instrumentów finansowych, cechy charakterologiczne gracza, w tym skłonność do ryzyka, oraz stosowane strategie inwestowania. Następnie zdefiniowano zadanie optymalizacji wielokryterialnej wyboru spośród wszystkich dostępnych decyzji jednej lub wielu, w rozumieniu gracza, najlepszych.
Źródło:
Biuletyn Instytutu Systemów Informatycznych; 2014, 13; 15-23
1508-4183
Pojawia się w:
Biuletyn Instytutu Systemów Informatycznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A multicriteria model for analyzing the impact of EU GHG limiting policies on economic growth: The case of Poland
Autorzy:
Gadomski, J.
Krus, L.
Nahorski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/205698.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
greenhouse gases
curbing emissions
government policy
multicriteria optimization
technological change
economic growth
Opis:
In this study, a macroeconomic model and the multicriteria approach are used to analyze the impact of the enforced greenhouse gas (GHG) emission limits on economic development and future consumption in a small open economy country, like Poland. The following questions are considered: how economic transformation, connected with adjustment of the national economy to the policy limiting GHG emission would proceed? what may be the consequences of the enforced emission limits for the economic development and future consumption? The model answers these questions by presenting time trajectories, describing the evolution of three sectors, which influence GHG emission, namely those producing intermediary inputs, consumer goods, and investment goods. The sectors interact via markets of the relevant goods. The model takes into account the inertial behavior of the large-scale dynamic system, as well as social and political resistance to changes. It also indicates technological changes in the form of time-varying shares of two technologies, namely the GHG emission intensive and the GHG emission avoiding ones. Two competing objectives are considered in the multicriteria analysis, i.e. maximization of consumption and minimization of GHG emission. The costs of pursuing the GHG limiting policy are assessed in terms of lost consumption. The multicriteria analysis is performed with the use of the derived representation of the Pareto optimal outcomes. Computational results are presented for the case of Poland. They show three phases in a transition period, early growth on the basis of existing assets in the initial years, a depression phase, where technological changes mainly occur, and a period of renewed growth. They are followed by a steady development under new emission conditions.
Źródło:
Control and Cybernetics; 2018, 47, 1; 55-83
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
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