Wszystkie pola: grunwald, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Flowering plants of Hedera helix L. in the Grunwald district of the city of Poznan
Kwitnące rośliny bluszczu pospolitego (Hedera helix L.) w dzielnicy Grunwald miasta Poznania
Autorzy:: Korszun, S.
Bykowska, J.
Powiązania:: https://bibliotekanauki.pl/articles/28530.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: flowering plant
Hedera helix
Grunwald quarter
Poznan city
chorology
Opis:: In the period from September 2008 to July 2009 in the Grunwald district in the city of Poznań, Poland, a total of 609 localities of flowering English ivy were recorded, for which 769 plants were described. These plants were found in different localities, most of them euhemerobic. The biggest number of flowering specimens was recorded in home gardens. Support for climbing plants was mainly provided by trees and shrubs, including fruit trees – pear and apple trees. Among the other tree species, the biggest group comprises Scots pine, common birch, European larch and common locust. Other types of supports included fences, buildings and elements of small architecture. A very high number of specimens in the generative stage in the Grunwald district indicates considerable popularity and at the same time very good adaptation of ivy not only to the climatic conditions of the city of Poznań, but also to anthropogenic changes in the habitat.
Źródło:: Acta Agrobotanica; 2011, 64, 1
0065-0951
2300-357X
Pojawia się w:: Acta Agrobotanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Examination of EGNOS Safety-of-Live service in Eastern Slovakia
Autorzy:: Ciećko, A.
Grzegorzewski, M.
Oszczak, S.
Ćwiklak, J.
Grunwald, G.
Balint, J.
Szabo, S.
Powiązania:: https://bibliotekanauki.pl/articles/320579.pdf
Data publikacji:: 2015
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: GNSS
GPS
SBAS
EGNOS
Safety-of-Life
satellite navigation
Opis:: The first PBN approach procedures in Slovakia became operationally effective at Bratislava and Košice airports as of 5 February 2015. The article presents the results of EGNOS Safety-of-Life Service preliminary examination in eastern Slovakia, just before official introduction of these procedures. The practical examination includes static test and test flight made with Cessna plane taking off at the airport in Bidovce — LZBD (just 16 km from international airport in Košice) and passing a route along eastern border of Slovakia. In this region the performance of EGNOS could be unsatisfactory due to lack of RIMS stations to the east from there. The experiment was performed on October 13, 2014 in cooperation of the Air Force Academy in Deblin, the Department of Aviation of Technical University in Košice and University of Warmia and Mazury in Olsztyn.
Pierwsze procedury podejścia do lądowania typu PBN (Performance-Based Navigation) na Słowacji zostały wdrożone na lotniskach w Bratysławie i Koszycach 5 lutego 2015 r. W artykule przedstawiono wyniki wstępnych analiz serwisu Safety-of-Life systemu EGNOS we wschodniej Słowacji, tuż przed oficjalnym wprowadzeniem tych procedur. Badania praktyczne obejmują test statyczny oraz lot testowy wykonany samolotem Cessna z lotniska Bidovce-LZBD (oddalonego zaledwie 16 km od międzynarodowego lotniska w Koszycach) po trasie wzdłuż wschodniej granicy Słowacji. W tym regionie jakość systemu EGNOS może być niezadowalająca z powodu braku stacji monitorujących RIMS na wschód od tego miejsca. Eksperyment przeprowadzono 13 października 2014 r. we współpracy Wyższej Szkoły Oficerskiej Sił Powietrznych w Dęblinie, Wydziału Lotnictwa Politechniki w Koszycach oraz Uniwersytetu Warmińsko-Mazurskiego w Olsztynie.
Źródło:: Annual of Navigation; 2015, 22; 65-78
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Normalized finite fractional differences: Computational and accuracy breakthroughs
Autorzy:: Stanisławski, R.
Latawiec, K. J.
Powiązania:: https://bibliotekanauki.pl/articles/331334.pdf
Data publikacji:: 2012
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: różnica ułamkowa
różnica Grünwalda-Letnikowa
analiza stabilności
system adaptacyjny
fractional difference
Grünwald-Letnikov difference
stability analysis
recursive computation
adaptive systems
Opis:: This paper presents a series of new results in finite and infinite-memory modeling of discrete-time fractional differences. The introduced normalized finite fractional difference is shown to properly approximate its fractional difference original, in particular in terms of the steady-state properties. A stability analysis is also presented and a recursive computation algorithm is offered for finite fractional differences. A thorough analysis of computational and accuracy aspects is culminated with the introduction of a perfect finite fractional difference and, in particular, a powerful adaptive finite fractional difference, whose excellent performance is illustrated in simulation examples.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2012, 22, 4; 907-919
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The Motion of a Bead Sliding on a Wire in Fractional Sense
Autorzy:: Baleanu, D.
Jajarmi, A.
Asad, J.
Błaszczyk, T.
Powiązania:: https://bibliotekanauki.pl/articles/1032352.pdf
Data publikacji:: 2017-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: motion of a bead on a wire
Euler-Lagrange equation
fractional derivative
Grünwald-Letnikov approximation
Opis:: In this study, we consider the motion of a bead sliding on a wire which is bent into a parabola form. We first introduce the classical Lagrangian from the system model under consideration and obtain the classical Euler-Lagrange equation of motion. As the second step, we generalize the classical Lagrangian to the fractional form and derive the fractional Euler-Lagrange equation in terms of the Caputo fractional derivatives. Finally, we provide numerical solution of the latter equation for some fractional orders and initial conditions. The method we used is based on a discretization scheme using a Grünwald-Letnikov approximation for the fractional derivatives. Numerical simulations verify that the proposed approach is efficient and easy to implement.
Źródło:: Acta Physica Polonica A; 2017, 131, 6; 1561-1564
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: On fractional vectorial calculus
Autorzy:: Ortigueira, M. D.
Machado, J. T. M.
Powiązania:: https://bibliotekanauki.pl/articles/201507.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Grunwald-Letnikov
Liouville
fractional gradient
fractional divergence
fractional curl
fractional Laplacian
Green’s theorem
Stokes’ theorem
Ostrogradski-Gauss’s theorem
tensor Greena
równanie Stokesa
równanie Gaussa
równanie Laplace'a
Opis:: This paper reviews the fractional vectorial differential operators proposed previously and introduces the fractional versions of the classic Green’s, Stokes’, and Ostrogradski-Gauss’s integral theorems. The suitability of fractional derivatives for sciences and the Laplacian definition are also discussed.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 4; 389-402
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Stability analysis for discrete-time fractional-order LTI state-space systems. Part II: New stability criterion for FD-based systems
Autorzy:: Stanisławski, R.
Latawiec, K. J.
Powiązania:: https://bibliotekanauki.pl/articles/200325.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Grünwald-Letnikov fractional difference
discrete-time fractional order system
stability criterion
non-minimum phase system
closed loop stability
Opis:: This paper presents a series of new results on the asymptotic stability of discrete-time fractional difference (FD) state space systems and their finite-memory approximations called finite FD (FFD) and normalized FFD (NFFD) systems. In Part I of the paper, new necessary and sufficient stability conditions have been given in a unified form for FD, FFD and NFFD-based systems. Part II offers a new, simple, ultimate stability criterion for FD-based systems. This gives rise to the introduction of new definitions of the so-called f-poles and f-zeros for FD-based systems, which are used in the closed-loop stability analysis for FD-based systems and, approximately, for FFD/NFFD-based ones.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 363-370
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Stability analysis for discrete-time fractional-order LTI state-space systems. Part I: New necessary and sufficient conditions for the asymptotic stability
Autorzy:: Stanisławski, R.
Latawiec, K. J.
Powiązania:: https://bibliotekanauki.pl/articles/200600.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Grünwald-Letnikov fractional difference
discrete-time fractional order system
stability conditions
Cauchy’s argument principle
Opis:: This paper presents a series of new results on the asymptotic stability of discrete-time fractional difference (FD) state space systems and their finite-memory approximations called finite FD (FFD) and normalized FFD (NFFD) systems. In Part I, new, general, necessary and sufficient stability conditions are introduced in a unified form for FD/FFD/NFFD-based systems. In Part II, an original, simple, analytical stability criterion is offered for FD-based systems, and the result is used to develop simple, efficient, numerical procedures for testing the asymptotic stability for FFD-based and, in particular, NFFD-based systems. Consequently, the so-called f-poles and f-zeros are introduced for FD-based system and their closed-loop stability implications are discussed.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 353-361
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki