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Wyszukujesz frazę "quartiles" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Dynamics of size classes of cities in Poland in 1950–2018
Autorzy:
Runge, Anna
Runge, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/1394590.pdf
Data publikacji:
2021-06-30
Wydawca:
Uniwersytet Gdański. Instytut Geografii
Tematy:
Polska
city size classes
large cities
medium-sized cities
small cities
quartiles
Opis:
The study aims to present variability in the population of individual size classes of Polish cities in 1950-2018, its determinants and consequences for the formation of the settlement system. The application of quartiles as the basic statistical measure allowed identifying which parts of particular size classes of cities had the greatest impact (progressively or regressively) on changes in the settlement system. In this respect, strong dynamics of the upper quartile of Polish cities, lasting until the end of the 1970s, becomes apparent. In the 1980s, the dynamics of the upper quartile of large cities showed a shift during development waves in comparison to the culmination of these waves for medium-sized cities. However, since the end of the 1980s, there has been an increasing role of the lower quartile in determining the direction of changes in the size structure of cities, especially in medium and small cities.
Źródło:
Journal of Geography, Politics and Society; 2021, 11, 2; 20-33
2084-0497
2451-2249
Pojawia się w:
Journal of Geography, Politics and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical analysis of models for punching resistance ensuring
Autorzy:
Kalická, Jana
Minárová, Mária
Halvoník, Jaroslav
Majtánová, Lucia
Powiązania:
https://bibliotekanauki.pl/articles/384924.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
data mining
reinforcement structures punching reliability
Shapiro-Wilk test
Tuckey’s fence
quartiles
coefficient of varianced
Opis:
In this paper the statistical assessment of the models that ensure the safety of the reinforced concrete slabs is fo cused. The investigation results in choosing the best mo del as the one that can aspire to become normative for European Union after 2020. Authors dispose with a suffi cient number of data yielded from experimental tests. Ha ving input geometrical and physical parameters of each experiment at hand, the corresponding theoretical value is computed by using three formulas provided by three models involving the same inputs. Case by case, the ratio between measured and theoretical value reveals the safety immediately. This ratio stands as the one parametric dimensionless statistical variable which is analysed after wards. Due to statistical parameters evaluation and in accordance with engineers a new model was suggested, statistically verified and nominated as the normative one.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2019, 13, 3; 49-55
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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