Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 8

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  statistical test
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Statistical methods for trend investigation in hydrological non-seasonal series

100%
Rutkowska A.
Acta Scientiarum Polonorum. Formatio Circumiectus
|
2013
|
tom 12
|
nr 4
In the paper some methods for identification of the monotonic deterministic trend in hydrological time series were presented and discussed: the t-test, the Mann-Kendall test with corrections, the Theil-Sen estimator with the test based on bootstrap and the prewhitening method. The tests varied in assumptions on the existence of the serial correlation and the distribution of the variables in the series. Occasionally, when assumptions were not fulfilled, the tests led to contradictory conclusions. As examples, the applications to annual maximum and minimum flows were presented.
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Significance tests uses in material logistics of food company in aspect of process technology

100%
Szymanek M., Burski Z.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2013
|
tom 13
|
nr 1
3

Testing for non-linearity in EEG signal of healthy subjects

86%
Stepien R. A.
Acta Neurobiologiae Experimentalis
|
2002
|
tom 62
|
nr 4
4

An incorrect analysis of archeozoological data on the aurochs

86%
Banbura J.
Acta Theriologica
|
1992
|
tom 37
|
nr 1-2
Serious errors in the statistical analysis conducted in a paper on the aurochs Bos primigenius (Lasota-Moskalewska and Kobryń 1990) are revealed in this article. A linear coding method transforming raw measurements into dimensionless numbers ranging from 0 to 100 was applied by the authors. Pooling the coded data on different traits is criticised and so is their application to any statistical tests. Correct tests are proposed.
5

Testing of a mathematical model of grain porosity

72%
Kusinska E., Kornacki A.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2008
|
tom 08a
6

Preliminary study of memory processes in Mongolian gerbil (Meriones unguiculatus)

58%
Goral-Radziszewska K., Kadziela K., Olszewska M., Drobik-Czwarno W., Fiszdon K., Jungnikel T.
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
|
2017
|
tom 56[2]
Preliminary study of memory processes in Mongolian gerbil (Meriones unguiculatus). Mongolian gerbil (Meriones unguiculatus) a small rodent living in the wild steppes of Mongolia was discovered in 1866 and it is becoming increasingly popular as a pet. The present work is an introduction to describe the behavior of this species and to investigate the influence of gender and age on memory process. 40 gerbils divided into four study groups (young males, young females, adult males, adult females) were twice tested in a modified version of the Lashley III maze (repeat after a week). Using statistical tests memory parameters, the activity of animals and behavior associated with the level of stress were analyzed. Conducted observations and calculations performed showed no difference between the groups (p > 0.05), which leads to the conclusion that in Mongolian gerbils age and sex have no effect on memory.
7

Konstrukcja modelu regresji wielorakiej przy wycenie nieruchomości

58%
Bitner A.
Acta Scientiarum Polonorum. Administratio Locorum
|
2007
|
tom 06
|
nr 4
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Applicability of unidimensional soil particle size distribution characteristics to plant ecology

58%
Czerwinski M., Kaliszewski G.
Acta Agrophysica
|
2013
|
tom 20
|
nr 1
The subject of the research was unidimensional indices (characteristics) of mineral soil particle size distribution: mass fractal dimension of soil particle size distribution, grain-size distribution index, mean particle diameter and the product of the two latter. Among the four above-mentioned indices, the three former are known from previous studies and the latter was proposed by the authors. The work is an attempt to answer the question which of these indices best describes the granulometric composition of mineral soils as a factor differentiating the species composition of vegetation. The experimental area was a one hectare fallow composed of soils of five different tex-tural classes. The ruderal plant cover of the fallow was mechanically destroyed and several dozen semi-natural grassland species were sown on bare soil. The seeds were thoroughly mixed and evenly distributed over the entire experimental area. Then, 39 permanent plots were regularly deployed across the experimental area. In the following year, the frequency of the emerging seedlings and juveniles of the sown plant species was estimated and the texture of the soil surface layer was ana-lysed in the permanent plots. Statistical analysis performed by fuzzy set ordination method indicated that the product of grain-size distribution index and mean particle diameter is the most appropriate unidimensional granulometric characteristic of the soil particle size distribution as a plant commu-nity assembly driver.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.