Wszystkie pola: confidence ellipsoid - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: O porównywaniu dwóch populacji wielowymiarowych z wykorzystaniem objętości elipsoid ufności
On the Comparison of Two Multidimensional Populations Using the Confidence Ellipsoid Volumes
Autorzy:: Stelmach, Jacek
Kończak, Grzegorz
Powiązania:: https://bibliotekanauki.pl/articles/593348.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Ekonomiczny w Katowicach
Tematy:: Statystyka
Symulacja Monte Carlo
Testy statystyczne
Monte Carlo simulation
Statistics
Statistical tests
Opis:: A comparison of two populations seems to be interesting and very common statistical problem. The most often way is to verify the hypothesis concerned the equality of certain, characteristic parameter i.e. mean, standard deviation or fraction with parametric or non-parametric tests. The authors propose to compare the distribution of two populations - comparing the confidence ellipsoid volumes. Since their distribution is unknown - permutation tests were applied. A Monte-Carlo simulation let to compare power of these tests with T2 Hotelling tests. Proposed methods can be used, when the assumptions for parametric tests couldn't be verified.
Źródło:: Studia Ekonomiczne; 2013, 133; 146-157
2083-8611
Pojawia się w:: Studia Ekonomiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Establishment of local geodetic networks based on least-squares adjustments of GNSS baseline vectors
Autorzy:: Weiss, Gabriel
Labant, Slavomír
Gasinec, Juraj
Stankova, Hana
Cernota, Pavel
Weiss, Erik
Weiss, Roland
Powiązania:: https://bibliotekanauki.pl/articles/43852825.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: pomiary GNSS
lokalna sieć geodezyjna
LSM
GNSS measurements
local geodetic networks
LSM adjustments
confidence ellipsoid
Opis:: Slope deformations, i.e., all types of landslides of rock masses (flow, creep, fall down, etc.), caused by gravitational forces, are the most widespread implementation of geological hazards and a negative geomorphological phenomenon that threatens the security of the population, destroy all utility values of the affected regions, negatively affects the environment, and cause considerable economic damage. Nowadays, the Global Navigation Satellite Systems (GNSS) provide accurate data for precise observations around the world due to the growing number of satellites from multiple operators, as well as more powerful and advanced technologies and the implementation of mathematical and physical models more accurately describing systematic errors that degrade GNSS observations such as ionospheric, tropospheric, and relativistic effects or multipath. The correct combination of measurement methods provides even more precise, i.e., better measurement results or estimates of unknown parameters. The combination of measurement procedures and their significant evaluations represent the essential attribute of deformation monitoring of landslides concerning the protection of the environment and the population’s safety in the interest areas for the sustainable development of human society. This article presents the establishment and use of a local geodetic network in particular local space for various needs. Depending upon the specific conditions, it is possible to use GNSS technology to obtain accurate observations and achieve the results applicable to the deformation survey for subsequent processing of the adjustment procedure.
Źródło:: Advances in Geodesy and Geoinformation; 2022, 71, 1; art. no. e15, 2022
2720-7242
Pojawia się w:: Advances in Geodesy and Geoinformation
Dostawca treści:: Biblioteka Nauki

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