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Journal of Telecommunications and Information Technology
2012 nr 3 91-96
EN Large scale potable water transmission system considered in this paper is the Toronto Water System, one of the largest potable water supply networks in North America. The main objective of the ongoing Transmission Operations Optimizer project consists in developing an advanced tool for providing suc[...]
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Control and Cybernetics
EN The main purpose of this paper is to show that David Gale's result (1960, Lemma 9.3 on sensitivity in linear programming) is not generally valid. In this lemma, additional assumptions, that are instead required, are not made. We give some correct versions of the above mentioned lemma, and with these[...]
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Hutnik, Wiadomości Hutnicze
2011 Vol. 78, nr 10 896--899
PL W artykule przedstawiono przykład zastosowania zagadnienia optymalizacji matematycznej, w technologii walcowniczej rozkroju kręgów taśm na wymiary handlowe, którego celem jest minimalizacja powstającego odpadu. Sformułowano model matematyczny procesu oraz przedstawiono sposób rozwiązania zagadnienia[...]
EN The paper presents example for use of a mathematical optimization problem in the mill technology of cutting circles strip on the trade dimensions, which aim is the waste minimalization. It has been formulated a mathematical model of the process and it has been shown the solution of the optimization [...]
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Bulletin of the Polish Academy of Sciences. Technical Sciences
EN The paper deals with dynamic circuits described by standard equation. The algorithm for estimating the range of capacitors or inductors values ensuring asymptotic stability or unstability of the equation points of some class of circuits is presented.
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Bulletin of the Polish Academy of Sciences. Technical Sciences
EN In this paper we present results of systematic and comprehensive simulation analysis of the Tsao & Safonov unfalsified controller for complex robot manipulators. In particular, we show that the controller falsification procedure yields the closedloop unfalsified controller, which accomplishes the co[...]
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International Journal of Electronics and Telecommunications
EN IBM ILOG CPLEX Optimization Studio delivers advanced and complex optimization libraries that solve linear programming (LP) and related problems, e.g., mixed integer. Moreover, the optimization tool provides users with its Academic Research Edition, which is available for teaching and noncommercial r[...]
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Studia z Automatyki i Informatyki
2010 T. 35 53-67
PL W artykule poruszono zagadnienie szybkości działania klasy metod simplex dla losowo generowanych zadań programowania liniowego. Wskazano struktury zadań, w których konkretna metoda działa szybciej niż pozostałe oraz wyciągnięto wnioski odnośnie takiego stanu rzeczy.
EN The paper considers performance issues of a class of simplex methods for randomly-generated LP problems. Problem structures that assure superior performance of a specific method have been stipulated with appropriate conclusions drawn.
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Polish Maritime Research
2005 S 1 51-55
EN The paper presents models and results of the structural strength analysis of a roofed floating dock. Computed thickness of the roof structure walls capable of withstanding the environmental loads is 24 mm. Heavy sliding roof segments generate the dock pontoon floor plate stresses reaching 25% of the[...]
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Challenges of Modern Technology
EN Article concerns a joint model of balancing energy and power reserves for the energy system which takes into account power and regulation reserves. Admission a varied situations of using energy from the system power reserves causes, that characterizes this model with a vast complexity of calculation[...]
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Systems : journal of transdisciplinary systems science
EN In the paper, the problems have been presented connected with containers delivery from railway terminals to consignees on the assumption of minimal costs of transportation. One of the linear programming method has been applied to forecast the costs, known as transportation problem.
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Journal of Polish Safety and Reliability Association
EN In the paper there are presented basic concepts and some results of the theory of semi-Markov decision processes. The algorithm of optimization a SM decision process with a finite number of state changes is discussed here. The algorithm is based on a dynamic programming method. To clarify it the SM [...]
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Decision Making in Manufacturing and Services
EN This paper presents a bi-objective portfolio model with the expected return as a performance measure and the expected worst-case return as a risk measure. The problems are formulated as a bi-objective linear program. Numerical examples based on 1000, 3500 and 4020 historical daily input data from th[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The paper presents an attempt of improving a productivity of the sleeve’s technological process by optimization times of machining operations. Design/methodology/approach: The optimization of times of turning operations was done by using the analytic and graphic method, which belongs to the[...]
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Zeszyty Naukowe / Akademia Morska w Szczecinie
2013 nr 34 (106) 48--58
EN The paper lists the problems hindering the use in business practices of the results of solving direct and inverse problems in linear programming. It is shown that overcoming these obstacles lies in the way of using of developed by the author and described in this paper method of structural optimizat[...]
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Polish Journal of Management Studies
2011 Vol. 4 231-238
PL W działalności produkcyjnej rozpoczęcie produkcji nowego wyboru wiąże się z podjęciem pewnego ryzyka, stąd też istnieje potrzeba uprzedniego zbadania racjonalnych podstaw przystąpienia do takiego przedsięwzięcia. Proces ten powinien rozpocząć się od zbadania możliwości osiągnięcia spodziewanych efek[...]
EN In production activity, starting manufacturing of a new product involves taking a particular risk. Therefore, the need arises for investigating the rational basis for starting such projects. This process should begin from the verification of the opportunities of reaching the expected effects of the [...]
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Acta Energetica
2012 nr 3 15--25
PL Artykuł rozpoczynający cykl artykułów o tej tematyce, prezentuje koncepcję modelu rozwoju systemu energetycznego w zakresie struktury technologicznej wytwarzania energii elektrycznej w Polsce, w horyzoncie długoterminowym – do roku 2060. Model ten oparty jest na strukturze matematycznej pakietu opty[...]
EN In this paper, which inaugurates a series of papers on this subject, a concept is proposed of a power system development model with regard to the technological structure of electricity generation in Poland, in the long-term time perspective – until 2060. The model is based on the mathematical struct[...]
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Control and Cybernetics
EN We model an environment where orders arrive probabilistically over time, with their revenues and capacity requirements becoming known upon arrival. The decision is whether to accept an order, receiving a reward and reserving capacity, or reject an order, freeing capacity for possible future arrivals[...]
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Rudy i Metale Nieżelazne
2007 R. 52, nr 8 463-472
PL W artykule zaprezentowano możliwości zastosowania narządzi programowania liniowego. Wykorzystano metodę mieszanek w optymalizacji procesów przeróbczych rud na przykładzie oddziałów eksploatacyjnych kopalni POLKOWICE-SIEROSZOWICE. Wyznaczono strategie eksploatacji oddziałów pod kątem wymagań zakładu [...]
EN Possible applications of linear programming tools were presented in the paper. Mixture method was applied to optimization of ore processing on the POLKOWICE-SIEROSZOWICE mining sections example. Strategies of mining sections exploitation were determined in referring to reąuirements of the ore enrich[...]
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Systems Science
EN Possibility is shown and description and solution methods of volumetric planning problem based on the enterprise bookkeeping data are developed. The methods allow us to solve planning problems directly according to the concrete enterprise data and to set out results in terms and in meaningful concep[...]
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Polityka Energetyczna
2015 T. 18, z. 1 27--43
PL Dyrektywa 2009/28/WE, promująca stosowanie energii ze źródeł odnawialnych, nakłada na Polskę obowiązek zwiększenia do roku 2030 udziału energii wyprodukowanej w źródłach odnawialnych do 20% w całkowitym zużyciu energii. Realizacja tego celu wiąże się ze zmianą obecnej infrastruktury systemu energety[...]
EN The European Directive 2009/28/EC imposes on Poland an obligation to increase the share of energy from renewable sources to 20% of total energy consumption by 2030. The implementation of that objective most certainly will result in significant changes to the current energy system infrastructure, whi[...]
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