Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Grzegorz Rządkowski"'
Publikováno v:
Alexandria Engineering Journal, Vol 60, Iss 2, Pp 2629-2639 (2021)
This paper contributes to develop a highly accurate numerical method for solving two-dimensional mass transfer equations during convective air drying of apple slices. The numerical scheme is based on the interpolating the solution of the mentioned eq
Externí odkaz:
https://doaj.org/article/dfee36c561e64312ad64ecf332b7d015
Publikováno v:
Alexandria Engineering Journal, Vol 60, Iss 2, Pp 2629-2639 (2021)
This paper contributes to develop a highly accurate numerical method for solving two-dimensional mass transfer equations during convective air drying of apple slices. The numerical scheme is based on the interpolating the solution of the mentioned eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c8ab55d2eab4663bd35e9b15dee7da8
http://www.sciencedirect.com/science/article/pii/S1110016820307031
http://www.sciencedirect.com/science/article/pii/S1110016820307031
Autor:
Lidia Sobczak, Grzegorz Rządkowski
Publikováno v:
Foundations of Management, Vol 12, Iss 1, Pp 85-92 (2020)
In the present article, we deal with a generalization of the logistic function. Starting from the Riccati differential equation with constant coefficients, we find its analytical form and describe basic properties. Then we use the generalized logisti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::518188246503c5dfcfad3b937285c0b8
https://doaj.org/article/e723e031a0b84831a36ab9febd1a4c19
https://doaj.org/article/e723e031a0b84831a36ab9febd1a4c19
Autor:
Emran Tohidi, Grzegorz Rządkowski
Publikováno v:
Filomat. 33:1801-1815
In the present paper we use the generalized Euler-Maclaurin summation formula to study the convergence and to solve weakly singular Fredholm and Volterra integral equations. Since these equations have different nature, the proposed convergence analys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a22e5e7583683738c700993085a306db
https://doi.org/10.2298/fil1906801r
https://doi.org/10.2298/fil1906801r
Autor:
Antoni Masiukiewicz, Kamil Piórczyński, Mariusz Jakubowski, Grzegorz Rządkowski, Iwona Dolinska
Publikováno v:
International Journal of Electronics and Telecommunications. 62:379-388
Channel assignment in 2.4 GHz band of 802.11 standard is still important issue as a lot of 2.4 GHz devices are in use. This band offers only three non-overlapping channels, so in crowded environment users can suffer from high interference level. In t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92bca41df577d0907fb4255726a041c6
https://doi.org/10.1515/eletel-2016-0052
https://doi.org/10.1515/eletel-2016-0052
Publikováno v:
Foundations of Management, Vol 7, Iss 1, Pp 185-190 (2015)
In the present paper, we investigate the Gompertz function, which is commonly used, mostly as diffusion model, in economics and management. Our approach is based on indicating in a given time series, presumably with a Gompertz trend, some characteris
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15f7f0152767113191bae42eccce4e93
https://doi.org/10.1515/fman-2015-0035
https://doi.org/10.1515/fman-2015-0035
Publikováno v:
Foundations of Management, Vol 6, Iss 1, Pp 57-70 (2014)
In the present paper, we propose a new approach to investigate the logistic function, which is commonly used in mathematical models in economics and management. The approach is based on indicating in a given time series, having a logistic trend, some
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd2fb779e5c23fc8bc78177650763740
https://doi.org/10.1515/fman-2015-0004
https://doi.org/10.1515/fman-2015-0004
Autor:
Grzegorz Rządkowski
Publikováno v:
Journal of Computational and Applied Mathematics. 236:3710-3719
In the present paper we introduce some expansions, based on the falling factorials, for the Euler Gamma function and the Riemann Zeta function. In the proofs we use the Fa\'a di Bruno formula, Bell polynomials, potential polynomials, Mittag-Leffler p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53e1dc11bb71614586047d398317da95
https://doi.org/10.1016/j.cam.2011.08.020
https://doi.org/10.1016/j.cam.2011.08.020
In the present paper we show that the Gompertz function, the Fisher-Tippett and the Gumbel probability distributions are related to both Stirling numbers of the second kind and Bernoulli numbers. Especially we prove for the Gumbel probability density
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7e2b2ae05f5cd6ee3c499de72f9e6c6
http://arxiv.org/abs/1511.03070
http://arxiv.org/abs/1511.03070
Publikováno v:
The 10th International Conference on Digital Technologies 2014.
WiFi is one of the most popular wireless standard today. However its popularity is killing itself. The number of local networks dramatically arises and as results one can achieve much worse parameters then expected if taking into accounts the devices
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9223fe412e81e3f056252cf2e77b7d50
https://doi.org/10.1109/dt.2014.6868691
https://doi.org/10.1109/dt.2014.6868691