Autor: Novikova, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The concept and the development plan of national transport model of Ukraine
Autorzy:: Redziuk, A.
Klymenko, O.
Ageiev, V.
Novikova, A.
Powiązania:: https://bibliotekanauki.pl/articles/2140801.pdf
Data publikacji:: 2017
Wydawca:: Fundacja Centrum Badań Socjologicznych
Tematy:: national transport model of Ukraine
data center of national transport model
strategic planning of transport development
national transport policy
Opis:: For discussion it is given the proposals to the a draft concept of national transport model of Ukraine with brief description of the goal, objectives, functions, constraints, architecture, basic principles and a priority action plan for establishment of the national transport model of Ukraine and a respective data center as a basic infrastructure component to ensure creation and subsequent functioning of the national transport model, as well as to enable continuous informational support of the transport industry to enhance its efficiency.
Źródło:: Journal of Sustainable Development of Transport and Logistics; 2017, 2, 1; 16-28
2520-2979
Pojawia się w:: Journal of Sustainable Development of Transport and Logistics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Problems and methods of calculating the Legendre functions of arbitrary degree and order
Autorzy:: Novikova, E.
Dmitrenko, A.
Powiązania:: https://bibliotekanauki.pl/articles/145436.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: wyznaczanie geoidy
pole grawitacyjne
harmoniczne sferyczne
Fully Normalized Associated Legendre Functions
recursion
underflow problem
overflow problem
Fukushima method
Opis:: The known standard recursion methods of computing the full normalized associated Legendre functions do not give the necessary precision due to application of IEEE754-2008 standard, that creates a problems of underflow and overflow. The analysis of the problems of the calculation of the Legendre functions shows that the problem underflow is not dangerous by itself. The main problem that generates the gross errors in its calculations is the problem named the effect of “absolute zero”. Once appeared in a forward column recursion, “absolute zero” converts to zero all values which are multiplied by it, regardless of whether a zero result of multiplication is real or not. Three methods of calculating of the Legendre functions, that removed the effect of “absolute zero” from the calculations are discussed here. These methods are also of interest because they almost have no limit for the maximum degree of Legendre functions. It is shown that the numerical accuracy of these three methods is the same. But, the CPU calculation time of the Legendre functions with Fukushima method is minimal. Therefore, the Fukushima method is the best. Its main advantage is computational speed which is an important factor in calculation of such large amount of the Legendre functions as 2 401 336 for EGM2008.
Źródło:: Geodesy and Cartography; 2016, 65, 2; 283-312
2080-6736
2300-2581
Pojawia się w:: Geodesy and Cartography
Dostawca treści:: Biblioteka Nauki

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