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Wyświetlanie 1-5 z 5
Tytuł:
Routing of Vehicles from Depot in Two-Level Supply Chain with a Meta-Heuristic Algorithm
Autorzy:
Hosseini, Zahra Sadat
Kamali, Iman
Powiązania:
https://bibliotekanauki.pl/articles/102346.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
routing
vehicles
depot
metaheuristic algorithm
trasy
pojazdy
zajezdnia
algorytm metaheurystyczny
Opis:
The present study aimed at routing vehicles from a depot in two-level supply chain with a meta-heuristic algorithm. This study is an analytical type of research. The issue of routing which includes time, travel duration dependent on the day, has first been introduced by Mandraki and Duskin. They proposed the issue of time-dependent Travelling Salesman Problem (TSP), such that their simplified issue was a VRP issue and service should be provided to all customers, and each customer should only be visited by one vehicle. Mathematical modeling was used as a research tool, and in the examined problem, there are a number of demand points with simultaneous delivery and return. This demand should pass the depot which should be selected from among candid points, and it should be determined that the construction of depot in each of these locations has a specific fixed cost. In order to send service from depot to the demand points, vehicles with special carrying capacity, fixed using costs, and overhead carrying costs. Given that solving the problem is time-consuming, the MOPSO meta-heuristic algorithm was used in order to solve the problem. The obtained results were fully presented, and in different repetitions it was observed that the second vehicle has the highest load carrying.
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 2; 38-45
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tram Depot Operating System as a comprehensive, integrated informatics system
Autorzy:
Mental, M.
Liver, K.
Powiązania:
https://bibliotekanauki.pl/articles/393707.pdf
Data publikacji:
2016
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
tram depot
operating system
safety integrity level
Traffic Control System
Depot management system
Traffic Control Terminal
zajezdnia tramwajowa
system operacyjny
poziom nienaruszalności bezpieczeństwa
system kontroli ruchu
system zarządzania zajezdnią
Opis:
The paper presents the principles of the Automated System for Management Depot. ASMD system includes: - Identification System designed to recognize individuals who enters into depot (marker RFID), - Radio Data transmission system, dedicated fibre optic network, - The place for dispatcher with terminal equipped with interface for dispatcher, - Integration with: subsystem monitoring (CCTV), the position of replenishment of sand, under- track turning machine, position of the laser measuring of flat area on wheels and stickers on the wheels. System constantly analyzes the situation of track and signals from sensors available. The system is equipped with a number of reports to the dispatcher. The elements of detection and device drivers track ensure safety in the class SIL3.
Źródło:
Archives of Transport System Telematics; 2016, 9, 3; 31-35
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Organizing a bus depot - selected aspects
Organizacja zajezdni autobusowej - wybrane aspekty
Autorzy:
Pawlicki, J.
Czapkowski, L.
Romańczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/375292.pdf
Data publikacji:
2012
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
emisja spalin
zajezdnia autobusowa
stacja obsługi technicznej
transport miejski
exhaust emission
bus depot
depot technical station
urban transport
Opis:
Urban transportation problems are particularly noticeable within cities of over 100 thousand inhabitants. In these cities buses are a primary means of transport, but lack of low-floor and poor interior design does not encourage passengers to use them. However, the qualities that give the most negative feedback on the public transpiration are the technical condition of buses, excessive noise and exhaust emission. Technical backsides of the bus depots that constantly maintain the technical readiness of the required number of vehicles play an important role to ensure high quality standards. New European Union legislation is very helpful in such. New laws and regulations deal with the safety issues and environmental protection matters, to which the urban transportation depots must be strictly adjusted. This article refers to these documents and presents depot technical stations, which equipment needs to be upgraded in the first place.
Problemy transportu miejskiego zauważane są szczególnie w miastach powyżej 100 tys. mieszkańców. Środkiem transportu są przede wszystkim autobusy, których wyposażenie wnętrza, brak niskiej podłogi i stylistyka nie zachęcają pasażerów do korzystania z tego rodzaju oferty. Jednak to stan techniczny autobusów, nadmierny hałas i emisja spalin budzą najwięcej negatywnych opinii na temat transportu zbiorowego. Ważne zadanie w zapewnieniu wysokich standardów jakościowych pojazdu wykonują zaplecza techniczne zajezdni autobusów, których celem jest stałe utrzymanie w gotowości technicznej wymaganej liczby pojazdów. Pomocne są w tym nowe przepisy prawne Unii Europejskiej. Dotyczą one przede wszystkim przestrzegania zasad bezpieczeństwa i ochrony środowiska. Bazy transportu miejskiego muszą się do nich bezwarunkowo dostosować. Artykuł, odwołując się do tych dokumentów UE, prezentuje stanowiska techniczne zaplecza, których wyposażenie powinno być zmodernizowane w pierwszej kolejności.
Źródło:
Transport Problems; 2012, 7, 1; 111-118
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combined optimisation and MCDA based solution of the tram depot location problem
Autorzy:
Sawicki, Piotr
Sawicka, Hanna
Powiązania:
https://bibliotekanauki.pl/articles/2067408.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tram depot location
MCDA
multiple criteria decision aid
combinatorial optimisation
AHP method
AHORNsimple application
zajezdnia tramwajowa
lokalizacja zajezdni
kryteria w podejmowaniu decyzji
optymalizacja
metoda AHP
Opis:
This paper deals with an issue of technical facilities location in a public transport system. The decision problem is formulated as a selection of the most advantageous alternative, i.e. the location of a new tram depot among the already existing facilities of this type. The selection is preceded by the evaluation of the alternatives. The assessment is not a trivial task, because there are many groups of interest with usually contradictory points of view. Therefore, the evaluation of the new tram depot locations should represent different aspects, e.g., economical, technical, environmental, and organizational. To handle such a complex decision problem the authors propose a methodology, which is a composition of the optimisation and multiple criteria evaluation techniques. The developed methodology is experimentally applied to the selection of one out of five tram depot locations in the public transport system of the city of Poznan, Poland. All the computational experiments are performed by means of optimization and multiple criteria decision aiding (MCDA) methods and tools, i.e. a linear optimization engine Solver Premium Platform and AHP method with its application AHORNsimple. The calculations are the basis for recommending the location of a new depot in the central part of the transport system network, which is a reasonable solution taking into account, e.g. the proximity of the main railway line, the possibility of triple distribution of the transport means from depot. The proposed methodology of the decision problem solution gives also an opportunity to create the hierarchy of considered tram depot locations as well as to compare the position in the ranking of the best solution with the existing one. Since the proposed methodology assumes the selection of the most suitable MCDA method to the problem under consideration and the decision maker’s preferences, it guarantees that the result of analysis becomes reliable and the decision aiding process is credible.
Źródło:
Archives of Transport; 2021, 60, 4; 88--103
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of Truck Maintenance Allocation Scheme Based on SA-GA
Autorzy:
Qiu, Jiandong
Ren, Wei
Tang, Minan
Ma, Panpan
Zhang, Yang
Powiązania:
https://bibliotekanauki.pl/articles/2173924.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
railway transportation
train-line
train depot
maintenance of railway trucks
renovations
repair schedule
SA-GA
transport kolejowy
linia kolejowa
zajezdnia kolejowa
konserwacja taboru kolejowego
prace remontowe
harmonogram remontów
Opis:
As an important department of railway transportation and production, large freight train depot is responsible for the regular overhaul and maintenance of railway trucks. The shunting operation of freight train depot covers the whole process of railway trucks entering, storing, overhauling and leaving the depot. It is an important step in the implementation of the maintenance operation. Usually, shunting personnel in the depot transport the trucks to be overhauled to the maintenance line by relying on the shunting operation plan, which is the key to determine the shunting operation plan according to the distribution relationship between vehicles and maintenance. Firstly, this paper analyzes the process of centralized shunting operation in the freight train depot and the factors affecting the time-consuming based on the research idea of flexible workshop scheduling problem. Then, on the premise that the proportion of the weight coefficient will have an impact on the time-consuming of truck busy and shunting in the shunting process, and with the goal of minimizing the time-consuming of truck maintenance busy and shunting, the allocation model between trucks and maintenance lines is established; In addition, an improved genetic algorithm is proposed to solve the established model; Finally, combined with the maintenance of railway trucks in a large freight train depot, an example analysis is carried out on this basis. The results demonstrate that using simulated annealing genetic algorithm to solve the model can obtain the allocation scheme between railway trucks and maintenance operation line. Under the influence of three different coefficients, compared with genetic algorithm, simulated annealing genetic algorithm can reduce the detention time of railway trucks in depot by 0.21%, 0.09% and 0.12% respectively, which is beneficial to reducing the detention time of maintenance vehicles in depot, It plays a positive role in improving the maintenance efficiency of trucks in the depot, and also provides new ideas for the research of railway truck shunting
Źródło:
Archives of Transport; 2022, 62, 2; 59--71
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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