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    Tytuł:
    Performance evaluation of terminal airspace system safety, delay and predictability of Muritala Mohammed International Airport, Ikeja Lagos, Nigeria
    Autorzy:
    Ejem, Ejem Agwu
    Ikeogu, Vivian N.
    Okafor, Chinenye L.
    Erumaka, P. O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2141114.pdf
    Data publikacji:
    2020
    Wydawca:
    Fundacja Centrum Badań Socjologicznych
    Tematy:
    terminal airspace
    safety
    delay
    predictability
    ATC
    Opis:
    This paper outlines a multi-dimensional user-oriented performance metrics approach in evaluating the operation of the terminal airspace system to aid in the airport and airspace planning and decision making. Safety, delay and predictability metrics contribute to the analytical framework. From the findings, the occurrence of air incidence has a high severity level at departure, and arrival phases of flight, higher likelihood at the radar room and much of the incidences were as a result of faulty equipment and inherent absence of modern airspace infrastructure. Also, in Lagos terminal airspace, the number of incidences has no close correlation with the level of traffic complexity. Total schedule arrival delay ranges from 1-392 minutes representing an average of 7.8-17.9 minutes per aircraft that arrived Lagos airport at that period. Besides, the total approach contact time ranges from 1-57 minutes, translating to 4.6-7.1 minutes per aircraft. However, variability in arrival time of 1-5 minutes is common from published airline arrival scheduled time. In the same vein, the variability of 1-5 minutes is common from approach contact times of aircraft. These figures indicate sound arrival predictability signature for Lagos airport. Also, departure time variability above 30 minutes is familiar from the ATC clearance time for the various routes under study. However, there is about or more 25% variability of more than 15 minutes, and this indicates possible inconsistency of predicting departure times from the times ATC clearance was acquired. Above all, the predictability of departure times in Lagos airport is weak compared to those of the arrival. Taken by it, this may be a sign of airspace congestion or ATC deficiencies at the Lagos airport. This is an indication of the lack of users' confidence in Nigeria's air transport industry to deliver just-in-time service.
    Źródło:
    Journal of Sustainable Development of Transport and Logistics; 2020, 5, 2; 62-72
    2520-2979
    Pojawia się w:
    Journal of Sustainable Development of Transport and Logistics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sterowanie pociągiem metra przez system automatycznego prowadzenia pociągu
    Metro train control with ATC system
    Autorzy:
    Barański, S.
    Błaszczyk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1372631.pdf
    Data publikacji:
    2011
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    automatyczne prowadzenie pociągu
    ATC
    sterowanie pociągiem
    metro
    pociąg
    Opis:
    SOP-2 and SOP-2P are an automatic train protection systems (ATP) designed to assist the driver in driving the train in the safest way. It provides relevant signal information in the cab, continuous monitoring of the actions of the driver and the motion of the train. SOP systems are designed to be transparent to the driver, as long as the traffic regulations are followed. If the traffic situation is regarded dangerous, SOP systems will intervene and brake the train down to a safe speed, or stop the vehicle before an obstacle. In this paper the interfaces between SOP electronic central unit and train were described. Logic of the presented solutions for this interface, due to safety functions they perform, is mainly based on relays, however an indisputable advantage of this system is its advanced concept, allowing in future using a higher level of automation and establishing the preconditions for a possible co-operation with other systems and also the next generation of technology.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2011, 3, 91; 95-98
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Obciążenie narządu wzroku podczas pracy z komputerem na stanowiskach o szczególnych wymaganiach percepcyjno-decyzyjnych
    Eye load at a workstation with modern Information and communication devices with a display
    Autorzy:
    Kamińska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/180251.pdf
    Data publikacji:
    2016
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    ergonomia
    dolegliwości narządu wzroku
    KRL
    ergonomics
    eye load
    ATC
    Opis:
    W artykule przedstawiono informacje na temat występowania dolegliwości narządu wzroku u osób pracujących z komputerem na stanowiskach o szczególnych wymaganiach percepcyjno-decyzyjnych (kontrolerów ruchu lotniczego, dyspozytorów straży pożarnej czy dyspozytorów przesyłu gazu), wykorzystujących nowoczesne urządzenia informatyczne i komunikacyjne z wyświetlaczem. Opisano czynniki, które mogą wpływać na zwiększenie obciążenia narządu wzroku oraz zasady profilaktyki z punktu widzenia bezpieczeństwa i higieny pracy.
    This paper presents information on eye discomfort among people working with a computer at work stations with modem information and communication devices with a display (air traffic controllers, firefighters, gas transmission dispatchers, etc.). In their work, eye perception and decision-making are very important aspects of load. This paper discusses the main factors that can increase eye load and the principles of prevention in terms of occupational health and safety.
    Źródło:
    Bezpieczeństwo Pracy : nauka i praktyka; 2016, 9; 24-27
    0137-7043
    Pojawia się w:
    Bezpieczeństwo Pracy : nauka i praktyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristics of event recorders in automatic train control systems
    Autorzy:
    Jacyna, M.
    Szczepański, E.
    Izdebski, M.
    Jasiński, S.
    Maciejewski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/224106.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rail transport
    CBTC
    ATC
    JRU
    Automatic Train Control
    Communications-Based Train Control
    Juridical Recording Unit
    event recording unit
    transport kolejowy
    sterowanie pociągiem
    Opis:
    The development of railway transport in the current times is very noticeable, it is connected with the growing needs of movement as well as the development of information engineering. The increase in the demand for transport requires the implementation of solutions that increase the efficiency of the transport system. Both long-distance, agglomeration and metro railways can use different systems due to their specificity. Nevertheless, there is a noticeable trend in the development of systems supporting or even replacing the driver by the automation of selected activities. Such systems allow to reduce trains headway and thus increase the capacity of the line. CBTC class systems (Communications-based train control) belong to automatic train systems and are based on wireless transmission. The main purpose of using such systems is to increase the frequency of running trains while maintaining the level of safety. Computers that are on the system equipment record, process and analyse very large amounts of data. An essential element of such systems are recording units. The parameter recorders can be divided into technical and legal ones. However, for CBTC class systems, there is no obligation or requirement to use legal recorders as it is in the case of ETCS. However, it is necessary to use event recorders, and these are subject to the requirements set out in the PN-EN 62625-1: 2014 standard. The recorders are a very important component of safety systems, which is why they were analysed in this article. Both the driver, the vehicle and the infrastructure should be subject of continuous monitoring. The occurrence of an adverse event (not necessarily leading to an incident or accident) should be analysed and used to improve safety procedures. Currently, automatic systems are still developing and we are not able to accurately assess what the causes and effects of certain events may be, which is why data collection and analysis is particularly important. The article presents the general specification of the CBTC system. The parameters and properties of driving recorders should be presented. This article is cofinanced by the European Union POIR.01.01.01-00-0276/17
    Źródło:
    Archives of Transport; 2018, 46, 2; 61-70
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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