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Wyszukujesz frazę "multi-service system" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
Properties of the Multiservice Erlangs Ideal Gradings
Autorzy:
Hanczewski, S.
Kmiecik, D.
Powiązania:
https://bibliotekanauki.pl/articles/308103.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Erlang's Ideal Grading
multi-service system
traffic engineering
Opis:
The design and optimization process of modern telecommunications networks is supported by a range of appropriate analytical models. A number of these models are based on the Erlang’s Ideal Grading (EIG) model, which is a particular case of non-full-availability groups. A possibility of the application of the EIG model results from the fact that telecommunications systems show properties and features distinctive to non-full-availability systems. No detailed studies that would decisively help determine appropriate conditions for the application of the EIG model for modeling of other non-full-availability groups, that would be models corresponding to real telecommunications systems, have been performed. Therefore, this article attempts to find an answer to the following question: what are the prerequisite conditions for the application of the EIG model and when the model can be reliably used?
Źródło:
Journal of Telecommunications and Information Technology; 2016, 1; 37-43
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The New Analytical Model of Free Resources in the Limited Availability Resources
Autorzy:
Nowak, Błażej
Stasiak, Maciej
Zwierzykowski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/27312948.pdf
Data publikacji:
2023
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
analytical modeling
limited-availability group
multi-service system
networks
Opis:
The article presents a new analytical model for determining the probability of availability of a certain amount of well-defined free resources (e.g. a link) in a group of dedicated resources (e.g. a group of links) jointly serving a mixture of different classes of multiservice traffic. The presented method can be used to model access to resources in data centers, in particular in the software-defined networks, assuming – for reliability reasons – that the user should have access to a certain minimum number of specific separated resources. The proposed analytical model was verified by appropriate simulation experiments, which confirmed the satisfactory accuracy of the results obtained.
Źródło:
Journal of Telecommunications and Information Technology; 2023, 4; 102--107
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the efficiency of the delivery process in the technical object of transport infrastructure with the application of a simulation model
Autorzy:
Zabielska, Aleksandra
Jacyna, Marianna
Lasota, Michał
Nehring, Karol
Powiązania:
https://bibliotekanauki.pl/articles/24200792.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
process efficiency
mass service system
technical object reliability
multi-element systems simulation
FlexSim simulation
Opis:
The article presents the issue of assessing the effectiveness of the implementation of a logistics process with the use of a simulation model and queue theory. The process that has been analyzed is the process of goods’ delivery at the technical object. Firstly, a literature review was carried out. Next, the authors described the process using the QT (Queueing Theory). This was possible due to the fact that QT is widely used in the analysis of systems as well as the assessment of their effectiveness, maintenance, and reliability. The description, characteristics and graphic presentation of the system in which the process is carried out have been included in the study too. Then the process was implemented in the computer simulation environment. Simulations were carried out and four variants of the system operation were analyzed. The comparison of the operating parameters of the system for each variant allowed for a detailed analysis of its operation and the influence of selected factors on the implementation of the process as well as it effectiveness or reliability.
Źródło:
Eksploatacja i Niezawodność; 2023, 25, 1; art. no. 1
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recurrence relations for a multi-channel closed queueing system with Erlangian service times of second order
Autorzy:
Zhernovyi, Y.
Kopytko, B.
Powiązania:
https://bibliotekanauki.pl/articles/122441.pdf
Data publikacji:
2017
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
multi-channel closed queueing system
Erlangian service times of second order
fictitious phase method
recurrence relations
system kolejkowania
zależności rekurencyjne
Opis:
We propose a method for determining the steady-state characteristics of a multichannel closed queueing system with exponential distribution of the time generation of service requests and the second order Erlang distributions of the service times. Recurrence relations to compute the steady-state distribution of the number of customers are obtained. The developed algorithms are tested on examples using simulation models constructed with the assistance of the GPSS World tools.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2017, 16, 3; 123-128
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of e-Navigation strategies for RIS centres supporting inland navigation
Autorzy:
Lisaj, A.
Powiązania:
https://bibliotekanauki.pl/articles/117161.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
inland Navigation
e-Navigation
e-Navigation srategy
maritime navigation cloud
river information service (RIS)
multi-functional communication system
implementation of e-Navigation strategy
inland ECDIS
Opis:
The article presents at e-Navigation strategy and implementation plan for RIS centres supporting inland navigation. The author describes the RIS centre system architecture and modules collaborating in the process of data transmission based on e-Navigation technologies. The functional requirements of e-Navigation strategies for distress communications procedures and ensuring the safety of inland navigation in compliance with the EU directives are described. The components of e-Navigation, which integrate state-of-the-art satellite and terrestrial radio communications systems in the process of effective and efficient management of navigational data transmission, are presented. The feasibility of implementation of e-Navigation strategies for the Multifunctional Communication System integrating digital and analog data processing systems in maritime and inland navigation are analysed. A technological model of the Maritime Navigation Cloud supporting data exchange in the e-Navigation system is put forward.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 1; 145-149
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
G4 Multi-constellation Precise Point Positioning service for high accuracy offshore navigation
Autorzy:
Tegedor, J.
Ørpen, O.
Melgård, T.
Łapucha, D.
Visser, H.
Powiązania:
https://bibliotekanauki.pl/articles/115985.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite Systems (GNSS)
high accuracy offshore navigation
Precise Point Positioning (PPP)
Integer-Ambiguity Resolution (IAR)
G4 system architecture
Multi-constellation Precise Point Positioning Service
offshore navigation
positioning accuracy
Opis:
Fugro is operating a global GNSS infrastructure for the delivery of high-accuracy multi-constellation Precise Point Positioning (PPP) service, named G4. Precise orbit and clock for all global satellite navigation systems are estimated in real-time and broadcast to the users using geostationary satellites. End-users with a G4-enabled receiver are able to obtain sub-decimeter positioning accuracy in real-time. The system has been tailored for offshore applications where a nearby GNSS station is not always readily available. G4 offers seamless integration of GPS, GLONASS, Galileo and BeiDou in the navigation solution, therefore allowing the user to obtain a reliable and accurate position even in challenging environments, especially in presence of interference, scintillation or partial sky visibility. In addition, carrier-phase integer-ambiguity resolution (IAR) is supported, for those users requiring the highest possible navigation accuracy. This paper presents the G4 system architecture and current performance. The benefits of multi-constellation Precise Point Positioning (PPP) are shown in terms of increased availability, robustness and accuracy.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 3; 425-429
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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