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Tytuł:
A bi-objective portfolio optimization with conditional value-at-risk
Autorzy:
Sawik, B.
Powiązania:
https://bibliotekanauki.pl/articles/375981.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
multi-criteria decision making
portfolio optimization
conditional value-at-risk
weighting approach
linear programming
Opis:
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 the Warsaw Stock Exchange are presented and selected computational results are provided. The computational experiments prove that the proposed linear programming approach provides the decision maker with a simple tool for evaluating the relationship between the expected and the worst-case portfolio return.
Źródło:
Decision Making in Manufacturing and Services; 2010, 4, 1-2; 47-69
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Big-Bang Big-Crunch optimized general type-2 fuzzy logic approach for Multi-Criteria Group Decision Making
Autorzy:
Naim, S.
Hagras, H.
Powiązania:
https://bibliotekanauki.pl/articles/91606.pdf
Data publikacji:
2013
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
General Type-2 Fuzzy Logic
Multi-Criteria Group Decision Making
MCGDM
Big Bang-Big Crunch
BB-BC
intelligent apartment
iSpace
Opis:
Multi-Criteria Group Decision Making (MCGDM) aims to find a unique agreement from a number of decision makers/users by evaluating the uncertainty in judgments. In this paper, we present a General Type-2 Fuzzy Logic based approach for MCGDM (GFLMCGDM). The proposed system aims to handle the high levels of uncertainties which exist due to the varying Decision Makers’ (DMs) judgments and the vagueness of the appraisal. In order to find the optimal parameters of the general type-2 fuzzy sets, we employed the Big Bang-Big Crunch (BB-BC) optimization. The aggregation operation in the proposed method aggregates the various DMs opinions which allow handling the disagreements of DMs’ opinions into a unique approval. We present results from an application for the selection of reading lighting level in an intelligent environment. We carried out various experiments in the intelligent apartment (iSpace) located at the University of Essex. We found that the proposed GFL-MCGDM effectively handle the uncertainties between the various decision makers which resulted in producing outputs which better agreed with the users’ decision compared to type 1 and interval type 2 fuzzy based systems.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2013, 3, 2; 117-132
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Comprehensive Evaluation of Sustainable Manufacturing Programs Using Analytic Network Process (Anp)
Autorzy:
Ocampo, Lanndon A.
Clark, Eppie E.
Powiązania:
https://bibliotekanauki.pl/articles/578485.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Wielokryterialne podejmowanie decyzji
Produkcja zrównowazona
Rozwój zrównoważony
Analityczny proces sieci
Multi-criteria decision-making
Sustainable manufacturing
Sustainability
Analytic network process
Opis:
Evaluation o f programs initiated by manufacturing firms that are geared toward sustainability is worthy o f attention in research due to the current global demands o f addressing not just economic growth bu t environmental and social burdens. This paper a ttempts to provide a comprehensive evaluation framework using the hierarchical structure o f sustainable manufacturing (SM) indicators set developed by the US National Institute o f Standards and Technology (US NIST) and a multi-criteria decisionmaking (MCDM) approach, the analytic network process (ANP). ANP is deemed appropriate, aside from the multi-criteria nature o f the problem, because o f the presence o f subjective components that are interrelating in complex relationships. A real case study is carried out in a semiconductor manufacturing firm in the Philippines in the evaluation o f its programs toward sustainability. The results show that the creation and implementation o f cleaner production technologies are considered the most relevant programs. Developing energy-efficient products and adopting lean six sigma programs are considered second o n the list. This paper proposes that sustainability is achieved by formulating strategies that enhance customer and community well-being v ia addressing environmental concerns especially o n toxic substance, greenhouse gas (GHG) and air emissions. The contribution o f this paper consists in providing an evaluation framework which is comprehensive enough to capture real-life complex decision-making processes. Limitations and possibilities fo r future research are also presented in this paper.
Źródło:
Multiple Criteria Decision Making; 2014, 9; 101-122
2084-1531
Pojawia się w:
Multiple Criteria Decision Making
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A computational model for multi-criteria decision making in traffic JAM problem
Autorzy:
Naeem, Ali
Abbas, Jabbar
Powiązania:
https://bibliotekanauki.pl/articles/2141883.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
multi-criteria decision making
fuzzy measure
choquet integral
traffic jam
Opis:
In this paper, we apply a computational model for multicriteria decision making in traffic jam problems. First, we propose a system to determine the optimal shortcut road by reading the number of cars in each street using Radio Frequency Identification (RFID). Then, we have processed the data of traffic jam problems using Choquet integral with writing algorithm and computer program as a working procedure.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2021, 15, 2; 39-43
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A decision making support system in logistics cooperation using a modified vikor method under an intuituinistic fuzzy environment
System wsparcia decyzji w współpracy logistycznej z wykorzystaniem zmodyfikowanej metody vikor w rozmytym środowisku
Autorzy:
Tatarczak, Anna
Powiązania:
https://bibliotekanauki.pl/articles/362179.pdf
Data publikacji:
2020
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
coalition formation
logistics cooperation
multi-criteria decision analysis
group decision making
Shapley value
VIKOR
tworzenie koalicji
współpraca logistyczna
analiza decyzyjna wielokryterialna
grupowe podejmowanie decyzji
wartość Shapley'a
Opis:
Background: This paper proposes a novel hybrid group decision making methodology to solve a coalition-formation problem for cooperative replenishment with multiple firms to achieve operational efficiency. We consider a case of horizontal cooperation between firms, and we investigate the profitability of horizontal cooperation when designing collaborative contracts. Methods: This study presents the application of a hybrid approach for group decision support for the coalition-formation problem. Multi-criteria decision making (MCDM) and intuitionistic fuzzy set (IFS) theory have been integrated to provide group decision support under consensus achievement. In addition, this study employs the entropy method to identify the weights of the decision makers. Results: The proposed integrated approach has been further studied through an illustrative example. The decision procedure used here is simply structured so that it may easily be implemented with a computer. Conclusions: This research may be beneficial to decision makers, researchers and organizations in helping them to understand project based evaluation in order to design and plan better horizontal cooperation.
Wstęp: W artykule zaproponowano nową metodologię podejmowania decyzji dotyczących tworzenia koalicji między wieloma firmami w celu osiągnięcia wydajności operacyjnej. Rozważany jest przypadek horyzontalnej współpracy między firmami, a następnie badana jest opłacalność współpracy horyzontalnej przy projektowaniu umów o współpracę. Metody: W pracy przedstawiono zastosowanie podejścia hybrydowego do wspomagania decyzji grupowych w przypadku problemu koalicji. Zintegrowano wielokryterialne podejmowanie decyzji (MCDM) i intuicyjną teorię zbiorów rozmytych (IFS), aby zapewnić grupowe wsparcie decyzji przy osiągnięciu konsensusu. Ponadto zastosowano metodę entropii do identyfikacji wag osób podejmujących decyzje. Wyniki: Proponowane zintegrowane podejście zostało poddane dalszej analizie za pomocą przykładu. Zastosowana tutaj procedura decyzyjna ma prostą strukturę, dzięki czemu można ją łatwo wdrożyć za pomocą komputera. Wnioski: Badania te mogą być korzystne dla decydentów, badaczy i organizacji, pomagając im zaprojektować i zaplanować współpracę horyzontalną.
Źródło:
LogForum; 2020, 16, 2; 251-260
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Decision Rule for Uncertain Multi-Criteria Pure Decision Making and Independent Criteria
Autorzy:
Gaspars-Wieloch, Helena
Powiązania:
https://bibliotekanauki.pl/articles/429875.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
Tematy:
uncertainty
multi-criteria decision-making
pure strategies
one-shot decisions
independent criteria
two-stage models
Opis:
The paper is concerned with multi-criteria decision-making under uncertainty with scenario planning. This topic has been explored by many researchers since almost all real-world decision problems contain multiple conflicting criteria and a deterministic evaluation of criteria is often impossible. We propose a procedure for uncertain multi-objective optimization which can be applied when seeking a pure strategy. A pure strategy, as opposed to a mixed strategy, allows the decision-maker to select and perform only one accessible alternative. The new approach takes into account the decision-maker’s preference structure (importance of particular goals) and nature (pessimistic, moderate or optimistic attitude towards a given problem). It is designed for one-shot decisions made under uncertainty with unknown probabilities (frequencies), see decision-making under complete uncertainty or decision-making under strategic uncertainty. The novel approach can be used in the case of totally independent payoff matrices for particular targets.
Źródło:
Optimum. Economic Studies; 2017, 3(87)
1506-7637
Pojawia się w:
Optimum. Economic Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A hybrid evolutionary algorithm of optimized controller placement in SDN environment
Autorzy:
Hemagowri, J.
Tamil Selvan, P.
Powiązania:
https://bibliotekanauki.pl/articles/38704829.pdf
Data publikacji:
2023
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
controller
software defined network
Gaussian chaotic map
fish swarm
multi-criteria optimization
kontroler
sieć zdefiniowana programowo
mapa chaosu Gaussa
rój ryb
optymalizacja wielokryterialna
Opis:
Controller placement problem (CPP) is a significant technological challenge in software defined network (SDN). Deployment of a properly designed SDN-based network is required to detect optimal number of controllers for enhancing the network’s performance. However, the best possible controller placement for enhancing the network’s performance faces many issues. To solve the CPP, a novel technique called the hybrid evolutionary algorithm of optimized controller placement (HEA-OCP) in SDN environment is introduced to increase network’s performance by different network topologies. In the proposed model, optimized controller placement using improved multi-objective artificial fish optimization is employed to improve data transmission and reduce latency. Controller placement can be determined using an undirected graph based on a variety of factors, including propagation delay, load balancing capabilities and bandwidth, fault tolerance and data transfer rate, and a variety of other factors. For each controller, the fitness value is calculated over multi-criteria functions. The optimizer’s performance can be improved with the use of Gaussian chaotic maps. In large-scale SDN networks using HEC-OCP, the algorithm dynamically analyzes the optimal number of controllers and the best connections between switches and controllers. As a result, the overall network performance is improved and the delay minimization-based controller placement strategy is obtained. The simulation of HEA-OCP with existing methods is conducted by a network topology dataset of various metrics, namely packet delivery ratio, packet drop rate, throughput, average latency, and jitter. The proposed HEA-OCP improves the packet delivery and throughput with reduced average latency, and packet drop ensures more instantaneous communications in real-time applications of SDN for better decision-making.
Źródło:
Computer Assisted Methods in Engineering and Science; 2023, 30, 4; 539-556
2299-3649
Pojawia się w:
Computer Assisted Methods in Engineering and Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A hybrid multi-criteria decision-making technique for international market selection in SMEs
Hybrydowa wielokryterialna technika podejmowania decyzji dla wyboru rynku międzynarodowego w MŚP
Autorzy:
Baena-Rojas, Jose Jaime
Mackenzie-Torres, Tania Margarita
Cuesta-Giraldo, Guiovanny
Tabares, Alexander
Powiązania:
https://bibliotekanauki.pl/articles/27315113.pdf
Data publikacji:
2023
Wydawca:
Politechnika Częstochowska
Tematy:
international market selection
multi-criteria model
SMEs
management
wybór rynku międzynarodowego
model wielokryterialny
MŚP
zarządzanie
Opis:
Traditional market selection analysis relies purely on macroeconomic and political factors and fails to account for cultural aspects. Also, international market selection systematic models lack to incorporate hybrid techniques to systematically reduce the uncertainty by comparing results and examining the similarities and differences of the various approaches. The paper aims to present a multi-criteria decision-making model combined with a qualitative technique to make strategic decisions while selecting an international market. Using a hybrid approach, it was examined 18 coffee-producing SMEs to contrast the current multi-criteria model with the firms’ qualitative approach. Thus, the study offers novelty by incorporating a cultural dimension in a multi-criteria model and combining this quantitative approach with a qualitative approach to validate a hybrid approach and thus gain more reliable decision-making while selecting markets abroad. The contribution of the study is twofold. First, the study offers insights into international business by analyzing the relationship between international market selection and small and medium-sized enterprises from novel contexts. Second, the study proposes a multi-criteria decision-making model combined with a qualitative technique to make accurate and strategic decisions while selecting foreign markets.
Tradycyjna analiza wyboru rynku opiera się głównie na czynnikach makroekonomicznych i politycznych i nie uwzględnia aspektów kulturowych. Ponadto, systematyczne modele wyboru rynków międzynarodowych nie uwzględniają technik hybrydowych, aby konsekwentnie zmniejszać niepewność poprzez porównywanie wyników oraz badanie podobieństw i różnic między różnymi metodami. Celem artykułu jest przedstawienie wielokryterialnego modelu decyzyjnego w połączeniu z metodą jakościową do podejmowania strategicznych decyzji przy wyborze rynku międzynarodowego. Wykorzystując podejście hybrydowe, zbadano 18 MŚP produkujących kawę, aby porównać obecny model wielokryterialny z metodą jakościową stosowaną przez firmy. W związku z tym badanie oferuje nowatorstwo poprzez włączenie wymiaru kulturowego do modelu wielokryterialnego i połączenie tej metody ilościowej z metodą jakościową w celu zweryfikowania techniki hybrydowej, a tym samym uzyskania bardziej wiarygodnego procesu decyzyjnego przy wyborze rynków zagranicznych. Opracowanie ma dwojaki charakter. Po pierwsze, oferuje ono wgląd w międzynarodowy biznes poprzez analizę relacji między wyborem rynku międzynarodowego a małymi i średnimi przedsiębiorstwami z nowych kontekstów. Po drugie, proponuje się wielokryterialny model podejmowania decyzji w połączeniu z techniką jakościową w celu podejmowania trafnych i strategicznych decyzji przy wyborze rynków zagranicznych.
Źródło:
Polish Journal of Management Studies; 2023, 27, 1; 26--45
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A literature review of interval-valued intuitionistic fuzzy multi-criteria decision-making methodologies
Autorzy:
Kokoç, Melda
Ersöz, Süleyman
Powiązania:
https://bibliotekanauki.pl/articles/2100434.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
multi-criteria decision-making
review
interval-valued intuitionistic fuzzy set
MCDM
MADM
Opis:
Multi-criteria decision-making (MCDM) is one of the most popular problems handled by researchers in the literature. Since the interval-valued intuitionistic fuzzy set (IVIFS) theory generates as realistic as possible evaluation of linguistic expressions, researchers have been expanding traditional MCDM methods to the IVIF environment, especially in the last decade. This study provides a literature review of the relevant articles from several academic databases on applications of IVIF-MCDM methods. The review of 131 publications addresses specific research questions. To understand the research publication trend, this review offers a visual analysis that examines the studies from different perspectives, such as application areas, IVIF-MCDM methods, citations, most relevant journals, and validation methods. One of the most remarkable results of the literature review is that most publications in this field are published in SCIE indexed journals. Another noteworthy issue is that China is the country that produces the most articles in this field. In addition, English journals are mostly selected for the publication of articles. While it is seen that the investment selection problem is chosen mostly as the application area, the TOPSIS method is preferred mostly in the applications. This study stands out as the most comprehensive one that compiles publications containing extended traditional MCDM methods for IVIF sets. This review will be an important reference for future researchers and decision-makers involved in advancing MCDM methods considering vagueness and ambiguity.
Źródło:
Operations Research and Decisions; 2021, 31, 4; 89--116
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A MCDM approach with fuzzy AHP method for occupational accidents on board
Autorzy:
Özdemir, Ü
Altinpinar, I.
Demirel, F. B.
Powiązania:
https://bibliotekanauki.pl/articles/116385.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Analytic Hierarchy Process (AHP)
fuzzy AHP
occupational accidents
safety at sea
Fuzzy Multi-Criteria Decision-Making (FMCDM)
Multi-Criteria Decision-Making (MCDM)
on-board accidents
MCDM model
Opis:
Occupational accidents on board criteria determining is a challenging procedure in shipping industry as the ideal safety ship management strategy depends on many factors involving in shipping transportation There are many legislations, agreements and practices to obtain series of security measures in order to ensure safety and security of seafarers. Causes of on-board occupational accidents need to be evaluated in a correct manner to regulate more functional practices and also to lower the on-board accident rates. However, causes of on-board accidents can be extremely complex. Therefore, scientific methods should be used to evaluate the causes and to determine the measures to be taken. The evaluation of the parameters is of great importance for the future of the maritime sector and in terms of development. In this study, factors have been identified that lead to seafarers? occupational accidents on board and we tried to present alternative solutions which can be applied on this issue. Severity of the reasons that led to the accidents and their relationships with each other are identified to be able to sort through the alternative solutions with a model using the fuzzy AHP (Analytic Hierarchy Process) method approach. Results of the study revealed that the most important criteria for the occupational accidents on board criteria selection are respectively; human factors, lack of management, ship-borne troubles, cargo troubles and environmental factors.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 93-98
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Model Proposal for Wall Material Selection Decisions by Using Analytic Hierarchy Process (AHP)
Autorzy:
Uğur, L.
Baykan, U.
Powiązania:
https://bibliotekanauki.pl/articles/1031409.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
multi-criteria decision making
analytical hierarchy process
expert choice
building material selection
Opis:
Analytical hierarchy process, developed by Saaty, is a multi-criteria decision making method. It creates a hierarchy using the goal, decision criteria and decision alternatives, and sorts the various alternatives according to their relative importance. The aim in AHP is to choose the most suitable and important alternative, by making an arrangement from the most important to the least. In this study, a real life material selection application in a hotel building is described by using AHP method. Wall materials such as brick blocks, pumice concrete block, sand autoclaved aerated concrete blocks are decision alternatives and mechanical properties, physical properties, ease of application and costs of these materials are the decision factors. The analysis was performed based on the opinion of an expert and the most suitable alternative is selected. Also, it is concluded that the order related to the alternatives is reliable for the decision markers. Thus, a decision supporting method for a construction company using AHP applications is developed.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 577-579
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A modified HEART – 4M method with TOPSIS for analyzing indonesia collision accidents
Autorzy:
Bowo, L. P.
Prilana, R. E.
Furusho, M.
Powiązania:
https://bibliotekanauki.pl/articles/1841582.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
human reliability assessment
multi-criteria decision making
MCDM
error producing condition
EPC
HEART - 4M
EPC - 4M
human error probability
HEP
Opis:
Human error is recognized as the most common factor that causes maritime accidents. The human error assessment and reduction technique (HEART) is a human reliability assessment (HRA) that has been widely applied in various industries. Furthermore, the HEART – 4M method has been proposed to assess maritime accidents. The HEART – 4M method can clearly define the relationship between man, machine, media, and management factors and the human error. However, the calculation process to determine the weight of every selected error-producing condition (EPC) suffers from the uncertainty of the assessor's estimation in practical applications, which may affect the objectivity of its result. In this study, a modification of the HEART – 4M method with the technique for order preference by similarity to ideal solution (TOPSIS) is proposed. TOPSIS is a multi-criteria decision making (MCDM) tool. This study aims to develop the HEART – 4M method to make it more comprehensive and objective when assessing maritime accidents. First, the parameter of the generic task is determined as in the conventional HEART method. Second, the causal factors are converted to the suitable EPC – 4M, and there are four classification factors for the 38 standard EPCs, which are divided into man, machine, media, and management factors. Third, the TOPSIS is applied to handle the problems of interdependencies and interaction among EPC – 4M and the uncertainty that exists in the assessor´s judgment. The proportion effect of each EPC – 4M is determined through TOPSIS by considering the correlation among EPC – 4M. Finally, thirteen collision data obtained from the National Transportation and Safety Committee of Indonesia are assessed to apply the proposed method.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 3; 751-759
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A multi-criteria decision model for the introduction of electric storage multiple units on the partially electrified Gdynia-Hel railway
Wielokryterialny model decyzyjny wprowadzenia elektrycznych zasobnikowych zespołów trakcyjnych na częściowo zelektryfikowanej linii Gdynia - Hel
Autorzy:
Karkosińska-Brzozowska, Natalia
Stromski, Paweł
Karkosiński, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/2143148.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:
multi-criteria decision model
electric storage
multiple unit
railway
Gdynia
Hel
wielokryterialny model decyzyjny
zasobnik elektryczny
zespół trakcyjny
linia
Opis:
In this article, a multi-criteria study of the use of independently powered electric multiple units on the partially electrified Gdynia Główna - Hel railway was carried out. The use of (currently used) diesel and, as an alternative, electric and electric multiple units with an electric energy storage was considered. The analysis was carried out on the basis of three criteria for assessing the route service options, i.e. environmental, economic, operational and economic investment criteria. A multi-criteria decision model was developed for the analysis and a comparative analysis of the considered options for servicing the Gdynia Główna - Hel route was carried out. As part of the environmental criterion, it was found that the most environmentally friendly is the use of storage units. As part of the operational economic criterion, it was shown that the storage units have the lowest operating costs. The analysis, as part of the investment cost criterion, showed that the lowest investment costs are characteristic of route operation with the use of combustion units. The highest investment costs are related to the route operation by classic electric units, which is associated with the complete electrification of the line.
Przeprowadzono wielokryterialne studium zastosowania zasobnikowych zespołów trakcyjnych na częściowo zelektryfikowanej linii Gdynia Główna - Hel. Rozpatrzono zastosowanie używanych obecnie spalinowych oraz jako alternatywę, elektrycznych i elektrycznych zespołów trakcyjnych z zasobnikiem (magazynem) energii elektrycznej. Analizę przeprowadzono w oparciu o trzy kryteria oceny wariantów obsługi trasy, tj. kryterium środowiskowe, ekonomiczne eksploatacyjne oraz ekonomiczne inwestycyjne. Do analizy opracowano wielokryterialny model decyzyjny i przeprowadzono analizę porównawczą rozpatrywanych wariantów obsługi trasy Gdynia Główna - Hel. W ramach kryterium środowiskowego stwierdzono, iż najprzyjaźniejszym dla środowiska naturalnego jest zastosowanie zasobnikowych zespołów trakcyjnych. W ramach kryterium ekonomicznego eksploatacyjnego wykazano, że najniższymi kosztami eksploatacji charakteryzują się pojazdy zasobnikowe. Analiza w ramach kryterium kosztu inwestycji wykazała, że najniższymi kosztami inwestycji cechuje się obsługa trasy przy zastosowaniu zespołów spalinowych. Najwyższe koszty inwestycji związane są z obsługą trasy przez klasyczne zespoły elektryczne, co wiąże się z całkowitą elektryfikacją linii.
Źródło:
Rail Vehicles/Pojazdy Szynowe; 2021, 2; 1-15
0138-0370
2719-9630
Pojawia się w:
Rail Vehicles/Pojazdy Szynowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A multifaceted approach to assessing intermodal transport
Autorzy:
Nehring, Karol
Lasota, Michał
Zabielska, Aleksandra
Jachimowski, Roland
Powiązania:
https://bibliotekanauki.pl/articles/27312361.pdf
Data publikacji:
2023
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
intermodal transport
natural environment
multi-criteria assessment
ELECTRE I method
transport intermodalny
środowisko naturalne
ocena wielokryterialna
metoda ELECTRE I
Opis:
The article presents the issues of land intermodal transport, taking into account their impact on the natural environment. The subject of the research is the use of the ELECTRE I method as a decision support tool in the assessment of various variants of transport, taking into account intermodal transport, i.e., transport on the initial and final sections of the route with the use of road transport and transport in the middle longest section by rail transport. This significantly reduces the emission of harmful compounds emitted into the atmosphere by the transport industry. In connection with the above, research on the possibility of choosing transport routes using mixed modes of land transport has been presented. The analyzed transport from point A to destination B considers two reloading operations at the land intermodal terminals. For each of the variants, indicators related to emissions from fuel consumption, the total time and cost of the process, the share of rail transport in the entire process, and the distance of road transport were calculated. The final analysis of the results shows that the following parameters had the most significant impact on the course of the research: the level of carbon dioxide emissions into the atmosphere and the total cost of the process for a given variant. Based on the conducted research, it can be concluded that the variant of transporting cargo from Rybnik to Świdnik with reloading at the PCC Intermodal terminals in Gliwice and the Lublin Container Terminal turned out to be the most advantageous solution.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2023, 121; 141--165
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new methodology of accounting for uncertainty factors in multiple criteria decision making problems
Autorzy:
Kalika, V. I.
Powiązania:
https://bibliotekanauki.pl/articles/308942.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
multiple criteria decision making
uncertainty factors
reasonable solutions
multi-level hierarchical system of multi-variant computation series
stable-optimal solutions
scenarios
Monte Carlo simulations
Opis:
A new approach is proposed to select a predetermined number of "reasonable" (the best in a certain sense) alternatives from the considerable (maybe a vast) set of initial alternatives according to an arbitrary number of optimization criteria and accounting for uncertainty factors. The approach is based on using a special intuitive methodology, developed to account for uncertainty factors when solving such multiple criteria decision making (MCDM) problems. This methodology is based on performing multi-variant computations (MVC) and finding their "stable-optimal" solutions, and it's realized as a multi-level hierarchical system of MVC series. It's possible to use this methodology for solving various real problems.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 3; 44-56
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 244

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