Zobrazeno 1 - 10
of 613
pro vyhledávání: '"M Kempa"'
Autor:
Serhii Vladov, Arkadiusz Banasik, Anatoliy Sachenko, Wojciech M. Kempa, Valerii Sokurenko, Oleksandr Muzychuk, Piotr Pikiewicz, Agnieszka Molga, Victoria Vysotska
Publikováno v:
Sensors, Vol 24, Iss 19, p 6488 (2024)
This research focused on the helicopter turboshaft engine dynamic model, identifying task solving in unsteady and transient modes (engine starting and acceleration) based on sensor data. It is known that about 85% of helicopter turboshaft engines ope
Externí odkaz:
https://doaj.org/article/f12d01e283124c289b0e20fd707306fa
Autor:
Petro Mykytyuk, Vasyl Brych, Volodymyr Manzhula, Olena Borysiak, Anatoliy Sachenko, Arkadiusz Banasik, Wojciech M. Kempa, Yuliia Mykytyuk, Aleksandra Czupryna-Nowak, Iryna Lebid
Publikováno v:
Energies, Vol 17, Iss 3, p 575 (2024)
The sustainable implementation of resources and the transition to low-carbon construction is on the world’s daily agenda. This paper describes the development of criteria for the efficient management of material resources in low-carbon construction
Externí odkaz:
https://doaj.org/article/8c6528049ba34a938a9957da8e6bb23b
Autor:
Wojciech M. Kempa, Iwona Paprocka
Publikováno v:
Symmetry, Vol 16, Iss 1, p 63 (2024)
Producers are encouraged to reduce their energy consumption of manufacturing systems by applying less-energy-intensive modern technologies and advanced machine tools and operating methods at the system level. In the paper, organizational and analytic
Externí odkaz:
https://doaj.org/article/4a2eec4d40fc4dc2bc4b0c7490d51164
Publikováno v:
IEEE Access, Vol 9, Pp 148374-148383 (2021)
A finite-capacity queueing model with the arrival stream of messages governed by the compound Poisson process and generally-distributed processing times is investigated. Whenever the system becomes empty (the server becomes idle), a number of determi
Externí odkaz:
https://doaj.org/article/83a5a4d6a7864c31a4234a46c63e4bb4
Autor:
Wojciech M. Kempa, Iwona Paprocka
Publikováno v:
Sensors, Vol 22, Iss 24, p 9909 (2022)
In the paper, a finite-capacity queueing model is considered in which jobs arrive according to a Poisson process and are being served according to hyper-exponential service times. A system of equations for the time-sensitive queue-size distribution i
Externí odkaz:
https://doaj.org/article/b8062ede6cea4a5a90ee5edfd8a6b190
Autor:
Wojciech M. Kempa, Dariusz Kurzyk
Publikováno v:
Sensors, Vol 22, Iss 23, p 9285 (2022)
This article proposes a queueing model of the operation of a wireless sensor network node, in which a threshold strategy for starting the node after a period of no transmission is used. In this model, transmission of packets is resumed when the numbe
Externí odkaz:
https://doaj.org/article/d90af5ebcee14465a26929af13b34fb9
Autor:
Wojciech M. Kempa, Dariusz Kurzyk
Publikováno v:
Energies, Vol 15, Iss 22, p 8471 (2022)
In the manuscript, a probability distribution of the queue length is studied in a model with group Markov arrivals, arbitrarily distributed service times and finite waiting room. After the period of suspension of service due to lack of packets, each
Externí odkaz:
https://doaj.org/article/fead9656ff7c456989493d9b2c78bc97
Autor:
Wojciech M. Kempa
Publikováno v:
Symmetry, Vol 14, Iss 11, p 2350 (2022)
In the paper a finite-capacity discrete-time queueing system with geometric interarrival times and generally distributed processing times is studied. Every time when the service station becomes idle it goes for a vacation of random duration that can
Externí odkaz:
https://doaj.org/article/18e4fabf8d3e498e9739151955e542ec
Autor:
Wojciech M. Kempa
Publikováno v:
Mathematical Modelling and Analysis, Vol 25, Iss 2 (2020)
A model of a single-machine production system with finite magazine capacity is investigated. The input flow of jobs is organized according to geometric distribution of interarrival times, while processing times are assumed to be generally distributed
Externí odkaz:
https://doaj.org/article/17542099702a45b5829c9af6c552f097
Autor:
Wojciech M. Kempa, Rafał Marjasz
Publikováno v:
Entropy, Vol 23, Iss 11, p 1410 (2021)
The transient behavior of the finite-buffer queueing model with batch arrivals and generally distributed repeated vacations is analyzed. Such a system has potential applications in modeling the functioning of production systems, computer and telecomm
Externí odkaz:
https://doaj.org/article/96d41b5dc9e146e4af7414336acd577b