Real Time Systems with Nonpreemptive Priorities and Ample Maintenance Facilities

Kreimer, Joseph; Ianovsky, Edward

doi:10.4236/jcc.2015.37004

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…An option to overcome the above difficulties may be to use MSS based on priority. This approach is used in [12,13], which consider the models of systems that are based on the preliminary determination of priority and without, respectively. Nevertheless, these models do not provide sufficient service speed.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Although GDS can be described as MSS, but most existing MSS models are not adaptive for GDS [6][7][8] or adaptive only partially [9][10][11]. Adaptive for GDS are only MSS based on priority but they do not provide sufficient ser-vice speed [12,13]. At the same time, existing GDS with the help of UAVs based on priority [14] are not effective enough.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Building a model of the goods delivery system that uses unmanned aerial vehicles based on priority

Knysh

Kulyk

2023

EEJET

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This paper considers the organization of a goods delivery process, which is selected as the study object. It has been established that the main problems that arise in this case can be caused, for example, by the imperfection of infrastructure and transport for delivery. This can be partially solved through the use of unmanned aerial vehicles for the delivery of goods, as well as by solving tasks related to effective control over their movement. However, there is another issue associated with the insufficient efficiency of existing mathematical models of goods delivery systems involving unmanned aerial vehicles since the maximum possible delivery speed is not provided. Therefore, there is a need to find a better solution to this problem. A model of the goods delivery system that uses unmanned aerial vehicles based on priority has been built. The resulting model takes into account the intensity of requests and provides a shorter waiting time in the queue, and therefore a greater delivery speed. Models of single-channel and multichannel goods delivery systems with failures and expectations were investigated according to probability. It was found that the devised goods delivery system is on average less loaded per unit of time and makes it possible to serve more orders while incoming orders are in line for less time. The same models have also been investigated according to the waiting time in the queue. It has been established that the devised goods delivery system provides a shorter waiting time in the queue. At the same time, the deviation between the theoretical and experimental values of probabilities and waiting time is 2 % and 3 %, respectively, which allows us to assert high accuracy of the results and the devised model as a whole. The results reported here could be used in practice in the absence of an extensive network of logistics and sales and remoteness of recipients

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Building a model of the goods delivery system that uses unmanned aerial vehicles based on priority

Knysh

Kulyk

2023

EEJET

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“…Further, in [12] [18] [19] and [20], these models working under a maximum load (worst case) of nonstop data arrival have been treated as queuing networks [21]. RTS with priorities were studied in [22] [23] (preemptive) and [24] (nonpreemptive) respectively.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Multiple Unmanned Aerial Vehicles Operating in General Regime with Shortage of Maintenance Facilities

Kreimer¹

2016

JCC

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We consider a real-world problem of military intelligence unit equipped with multiple identical unmanned aerial vehicles (UAV) responsible for several regions (with requests of real-time jobs arriving from independent sources). We suppose that there are no ample maintenance facilities, allowing simultaneous treatment of all vehicles if necessary. Under certain assumptions, these real-time systems can be treated using a queueing theory methodology and/or as Markov chains. We show how to compute steady-state probabilities of these systems, their performance effectiveness, and various performance parameters (for exponentially distributed service and maintenance times of UAVs, as well as tasks duration and their arrival pattern).

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Analysis of Combined Buffering and Retransmission with Maintenance Activity in OBS Networks

Vanitha

Sumitha

Sabrigiriraj

2018

2018 International Conference on Current Trends Towards Converging Technologies (ICCTCT)

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Real Time Systems with Nonpreemptive Priorities and Ample Maintenance Facilities

Cited by 3 publications

References 24 publications

Building a model of the goods delivery system that uses unmanned aerial vehicles based on priority

Building a model of the goods delivery system that uses unmanned aerial vehicles based on priority

Performance Evaluation of Multiple Unmanned Aerial Vehicles Operating in General Regime with Shortage of Maintenance Facilities

Analysis of Combined Buffering and Retransmission with Maintenance Activity in OBS Networks

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