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    Wyświetlanie 1-4 z 4
    Tytuł:
    Exhaust emission estimation in freight transport systems
    Autorzy:
    Szczepański, E.
    Gołda, P.
    Jacyna-Gołda, I.
    Izdebski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/245833.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    freight transport
    modelling
    emission estimation
    COPERT
    Green VRP
    transport towarowy
    modelowanie
    oszacowanie emisji
    Opis:
    Modelling of transport systems is a complex issue requiring taking into account many factors that allow for the mapping of the real system and thus allowing decision support. In the era of increasingly higher requirements for services, transport also faces the challenges of sustainable development. Therefore, it is necessary to conduct research both in the sphere of technical and organizational solutions aimed at limiting pollutant emissions. Mapping in the model the negative impact of transport on the environment allows for planning the implementation of the transport service taking into account the pro-ecological criterion. This is particularly important in urban areas where traffic and especially heavy goods vehicles are particularly onerous for inhabitants and require limiting transport work in the city area and the use of environmentally friendly rolling stock. The aim of the article is to present the considerations regarding the modelling of transport systems including pollutant emissions. The article introduces the problem of cargo distribution and a review of the models of estimation of pollution emission in the micro and macro scale was carried out. Next, a mathematical model was proposed which is a variant of the Vehicle Routing Problem of the so-called Green VRP. In the distribution model was used COPERT methodology for estimation of harmful substance emission. In article examples of calculations carried out on the example of the city of Warsaw for the organization of cargo distribution due to the CO emission criterion was presented. The article ended with a short synthesis of the work carried out.
    Źródło:
    Journal of KONES; 2018, 25, 1; 395-406
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The assessment of supply chain effectiveness
    Autorzy:
    Jacyna-Gołda, I.
    Izdebski, M.
    Szczepański, E.
    Gołda, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/223804.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    supply chain
    effectiveness
    decision models
    decision support systems
    łańcuch dostaw
    skuteczność
    modele decyzyjne
    Systemy Wspomagania Decyzji
    Opis:
    This paper presents the problem of the assessment of the supply chains in the context of their effectiveness. In this paper the concepts of a supply chain and effectiveness were characterized. The supply chain is a structure of entities which are connected with each other by the use of material and financial flows and functional, structural, technological, economic and information dependencies. Entities such as: suppliers, final recipients, entrepreneurs, warehouse facilities, supply centers, logistics operators, carriers, etc. perform material flows from suppliers to recipients. The concept of efficiency, in general terms, refers to economic rationality and means the relationship between the achieved or expected effects and the expenditures incurred. Additionally, indicators of measuring the effectiveness of the supply chain were described. In order to assess the effectiveness of the supply chain the decision model was developed. Optimization is crucial in decision support systems. The development of an appropriate model for mapping the behavior of a real object or system and formulating an optimization task is a necessary activity in effective management. This is even more important if we want to be competitive. Along with the development of decision support systems, as well as the development of systems for data acquisition on the system functioning, which feed optimization models in ever more detailed form, complex decision models are created that take into account many optimization criteria and require a large amount of data. It allows, however, to ensure the sustainable development of the system and simultaneous implementation of its basic tasks. The main aim of this paper is to present the stages and assumptions of the model for assessing the effectiveness of the supply chain. The main data input, constraints of the model, the criteria functions were determined.
    Źródło:
    Archives of Transport; 2018, 45, 1; 43-52
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The application of ant algorithm in the assignment problem of aircrafts to stops points on the apron
    Autorzy:
    Gołda, P.
    Izdebski, M.
    Szczepański, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/245325.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    air transportation
    air traffic control
    aircraft operation
    airport
    Opis:
    The article refers to the problem of assigning the aircrafts to stops points on the apron. The aim of this paper is to develop the algorithm, which will be used to this assignment. The assignment problem of aircrafts to stops points is the complex decision problems, which refer to the problems of designating the minimal path in the graph. The assignment model was described, i.e. decision variables, constraints and the criterion function. Decision variables take the binary form and determine the connections between the elements of infrastructure of the apron, i.e. touchdown points, intermediate points and stop points. Constraints take into account the number of aircrafts in the given period, the number of unoccupied stop points. The criterion function determines the minimum driving time of the aircraft on the apron. In order to designate the routes in international transport the heuristic algorithm, i.e. ant algorithm was developed. The steps of building this algorithm were presented. This algorithm was verified in the C# programming language. The results generating by the presented algorithm were compared with the results generating by the random algorithm.
    Źródło:
    Journal of KONES; 2018, 25, 4; 479-487
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Information systems as a tool for supporting the management of aircraft flight safety
    Autorzy:
    Zieja, M.
    Smoliński, H.
    Gołda, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/224144.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    air traffic
    safety
    statistical analysis
    forecast
    ruch lotniczy
    bezpieczeństwo ruchu lotniczego
    analiza statystyczna
    prognoza
    Opis:
    The article discusses the issue of air traffic safety in the context of aircraft combat readiness. Implemented methodological approaches to ensure security of civil and military aviation depend on the achieved level of safety The article points out selected aspects of data analysis in the field of flight safety gathered in IT systems functioning in civil and military aviation supporting the management of flight safety. Selected aspects of data analysis with different tools influencing the safety of flights are presented. The article also points to the role of the inspection functions and supervision at the stage of execution of normative acts on safety and conduct of flights and the implementation of projects to ensure flight safety. The development of projects firstly preventing air accidents is mentioned as an important action to support flight safety. Increasing level of flight safety in civil and military aviation requires searching for methods to support decisions and actions. The main aim is to develop such methods to support decisions which minimize the risk of errors.
    Źródło:
    Archives of Transport; 2015, 36, 4; 67-76
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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