Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "population estimation" wg kryterium: Wszystkie pola


Wyświetlanie 1-3 z 3
Tytuł:
Oszacowanie rzeczywistej liczby ludności gmin województwa mazowieckiego z wykorzystaniem danych ZUS
Estimation of the actual population of communes in the Mazovia voivodship using the data of the social insurance institution (ZUS)
Autorzy:
Śleszyński, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/418236.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
population statistics
population registration
the actual number of residents
population estimation
Mazovia voivodship
Opis:
The article presents the problem of lack of compliance with population registration requirements, in relation to the factual place of residence. This problem persists in Poland due to the reliance of official statistics on the data on current registrations, and also due to adoption of the legal, rather than factual definition of residence. To estimate the extent of this phenomenon for Mazovia voivodship, the data of the Social Insurance Institution (ZUS) are used, which enable a comparison of the addresses of permanent residence with the address for correspondence of the insured persons. Depending on the age group, the identified differences were quite high, especially for the most mobile ages (e.g. over 9% for people aged 27 years). Spatial concentration was also shown, especially with respect to underestimation of the true population of Warsaw and its suburban areas, and overestimation for peripheral regions. In many communes the problem of non-compliance with registration requirements concerns over 10% of the registered population. This limits the scope of demographic analyses, especially in the context of their practical applications and population projections
Źródło:
Studia Demograficzne; 2011, 2(160); 35-58
0039-3134
Pojawia się w:
Studia Demograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of fertility in Poland and of Polish born women in the United Kingdom
Autorzy:
Gołata, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/1827714.pdf
Data publikacji:
2016-06-10
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Population Census Quality
Population Estimates
Polish Migration
Migrant Fertility
Usually Resident Population
Opis:
The aim of research presented in the paper is to explore the comparison of Total Fertility Rates of Polish women in England and Wales, with the rates for Polish women who are residents in Poland. Population censuses in Poland and the United Kingdom in 2011 provide information for such comparisons and show higher fertility rates of Polish women abroad than in Poland. Two specific questions were investigated. The first one is the question of the number of children born in Poland. It was observed that the number estimated on the basis of census data was not consistent with birth records in the register. The second question concerns the number of the usually resident population in Poland. We provide quality assessment of 2011 population census in Poland, estimates of actual and usually resident population. Based on thorough evaluation, a correction of the population estimates is proposed (RAF). Due to non-response and data omissions, the idea of Small Domain Estimation is applied with two a priori age and sex distributions: from the Polish Census Survey and upon the UK census. Fertility in Poland is estimated with regard to usually resident population published on the Census Hub, our RAF estimates and LFS data. The estimates of women at reproductive age differ for over 495,000, what cause certain discrepancies in TFR. Additionally we analyse changes in timing of birth and provide tempo adjusted TFR. The paper shows consequences of population estimates for measuring fertility. It was found that depending on the population estimates TFR in Poland differs from 1.31 for actual population to 1.45 for RAF estimates and 1.63 for tempo-adjusted TFR. Via detailed empirical examination of the usually resident population estimates in Poland we show inconsistencies resulting from the flexibility in interpretation of definitions given by EU 1260/2013 and specific regulations of individual countries.
Źródło:
Studia Demograficzne; 2016, 169, 1; 13-38
0039-3134
Pojawia się w:
Studia Demograficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wrong transition and measurement models in power system state estimation
Autorzy:
Kozierski, P.
Lis, M.
Horla, D.
Powiązania:
https://bibliotekanauki.pl/articles/141129.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
particle filter
estimation quality
Population Monte Carlo
Opis:
The influence of wrong information about transition and measurement models on estimation quality has been presented in the paper. Two methods of a particle filter, with and without the Population Monte Carlo modification, and also the extended and unscented Kalman filters methods have been compared. A small 5-bus power system has been used in simulations, which have been performed based on one data set, and this data set has been chosen from among 100 different – to draw the most general conclusions. Based on the obtained results it has been found that for the particle filter methods the implementation of the slightly higher standard deviation than the true value, usually increases the estimation quality. For the Kalman filters methods it has been concluded that optimal values of variances are equal to the true values.
Źródło:
Archives of Electrical Engineering; 2016, 65, 3; 559-574
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies