Temat: spatial average - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: TESSELLATION AS AN ALTERNATIVE AGGREGATION METHOD
Autorzy:: Zabarina, Kateryna
Tematy:: Voronoi tessellation
point data
regional data
random sample
spatial analysis
aggregation
MAUP
spatial average; Pokaż więcej
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Powiązania:: https://bibliotekanauki.pl/articles/453557.pdf Link otwiera się w nowym oknie
Opis:: The sensitivity of statistical results to the choice of a particular zoning system is known as the Modifiable Areal Unit Problem. Level of aggregation is a significant factor determining results. Moving from point data to areal data, one should take into account aggregation and existence of spatial autocorrelation in the data. Though usually Voronoi tessellation is used in different study fields, this paper suggests it can be an alternative aggregation method to connect point and areal data in economics. Paper shows the possibility to calculate spatial average from point data and vice versa.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Impact of Public Transportation on European Countries’ Development: a Spatial Perspective
Autorzy:: Matyas, Andreea
Tematy:: Spatial Econometrics
Econometric Methods
Spatial Autoregressive Moving Average Model
Spatial Autocorrelation
Transportation Economics; Pokaż więcej
Wydawca:: Uniwersytet Warszawski. Wydział Nauk Ekonomicznych
Powiązania:: https://bibliotekanauki.pl/articles/20433505.pdf Link otwiera się w nowym oknie
Opis:: Sustainability is a key topic nowadays, mostly because in the last decade the pollution levels have reached an all-time high. National governments are searching for sustainable and environmentally friendly solutions to decrease the amount of pollution. This study is a cross-sectional study on 27 European countries, using data gathered in 2020. This study’s main goal is to show the environmental sustainability of public transportation and its impact on country development in Europe. The methodology used in this study will consist of spatial econometrics methods with visual maps and graphs to help with a better visual representation of the phenomena presented. The empirical evidence will be confirmed by the spatial regression’s results. Because the spatial diagnostic tests revealed that the spatial processes are present in terms of both spatial lag and spatial errors, the model that was used was a Spatial Autoregressive Moving Average Model (SARMA). Moreover, the environmental sustainability of public transport is also a significant factor. The expected results from which this study began – specifically, that the spatiality has a significant impact in modelling the relationship between public transportation and economic development – were confirmed.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Interpretation of Structural Parameters for Models with Spatial Autoregression
Autorzy:: Pietrzak, Michał Bernard
Tematy:: spatial econometrics
measures of average impact; Pokaż więcej
Wydawca:: Instytut Badań Gospodarczych
Powiązania:: https://bibliotekanauki.pl/articles/517218.pdf Link otwiera się w nowym oknie
Opis:: The main purpose of the article is to consider a important issue of spatial econometrics, which is a proper interpretation of structural parameters of econo-metric models with spatial autoregression. The problem will be considered basing on the example of the spatial SAR model. Another purpose of the article is to make an overview of measures of average spatial impact proposed by the subject litera-ture (see Lesage and Pace 2009). The analysis will include such measures as Aver-age Total Impact to an Observation, Average Total Impact from an Observation, Average Indirect Impact to an Observation, Average Indirect Impact from an Ob-servation and Average Direct Impact. Having considered the above issues, I will introduce a set of three original measures that allow the interpretation of the strength of the impact of the explanatory processes within the spatial SAR model, which take the forms of average direct impact, average indirect impact and average induced impact. The use of this set of measures will be illustrated with the example of the analysis of the unemployment rate in Poland. It must be emphasized that the presented set of measures may also be designated for other spatial models. With the knowledge of the empirical form of the model and of the spatial weight matrix, the set of measures introduced simplifies significantly the complex procedure of the interpretation of the structural parameters for spatial models to the use of merely three values.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Spatial wage inequality and its sectoral determinants: the case of modern Russia
Autorzy:: Malkina, Marina
Tematy:: regional average wage
spatial inequality
sectoral structure of economy
decomposition of inequality
convergence; Pokaż więcej
Wydawca:: Instytut Badań Gospodarczych
Powiązania:: https://bibliotekanauki.pl/articles/19090894.pdf Link otwiera się w nowym oknie
Opis:: Research background: We assume that the dynamics of spatial wage inequality can be caused by both shifts in the sectoral structures of regional economies and changes in inter-sectoral and intra-sectoral (inter-regional) wage inequality. Purpose of the article: The paper is aimed at analysis of the sectoral factors influenced the spatial wage inequality in Russia in 2005-2014. Methods: The employment-weighted Gini coefficient was applied for assessment of spatial wage inequality; the modified Lerman-Yitzhaki technique allowed to decompose it by main economic activities and their determinants; the mixed methods of factor analysis was used to evaluate the contribution of sectoral determinants to regional wage convergence in Russia. Findings & Value added: We found a weak and inconsistent convergence of Russian regions in average wage over the period under review and explained it by the opposing forces in the main economic activities. The spatial convergence was basically created by mining, manufacturing, agriculture, construction, and transport and communications activities, while wholesale and retail trade, financial intermediation and real estate operations counteracted it. The convergence was mainly facilitated by a reduction in inter-sectoral differences in wages as well as by rapprochement of the employment structures in some economic activities of Russian regions. In the meanwhile, the migration of labor force from lower wage to higher wage activities negatively affected the smoothing regional differences. Ultimately, intra-sectoral wage inequality and wages correlation in various activities rather preserved inequality. The results are applicable in the management of spatial inequality both at the regional and national levels.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: The Russian economic space: evolution during periods of reform, growth and crisis (1990–2010)
Autorzy:: Kholina, Veronika N.
Mironova, Marina N.
Tematy:: Russian regional economy
regional disparities
spatial concentration and differentiation of socio-economic development of regions
regional policy
regional asymmetries
deviation from the average; Pokaż więcej
Wydawca:: Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Powiązania:: https://bibliotekanauki.pl/articles/2035786.pdf Link otwiera się w nowym oknie
Opis:: The aim of the article is to identify the main tendencies in the dynamics of interregional disparities in the level of socio-economic development in Russia during periods of economic growth and crisis. These trends have been identified on the basis of an analysis of the regional coefficient of asymmetry of key per-capita indicators (GDP, investment in fixed capital etc.) as well as indicators of spatial concentration in Russia and deviations from the average (for GDP, per capita GDP and investments) at the federal district and regional levels. The main factors driving the dynamics of these disparities were the economic crisis, government anti-crisis measures and measures of social support. Comparison of the level of interregional disproportions in Russia and abroad indicated that the differences between levels of socio-economic development at the federal level are comparable with differences in EU countries, but at the level of regions - with countries of the world.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Odpływ podziemny w Gorcach
Baseflow in Gorce Mountains
Autorzy:: Peek, Barbara
Opis:: Badania dotyczą zagadnień jednostkowego odpływu podziemnego. Prace terenowe przeprowadzono w drugiej połowie 2012 roku. Celem badań było wykazanie przestrzennego zróżnicowania i czynników wpływających na moduł odpływu podziemnego w Gorcach.W czasie trwania niżówki na obszarze całego pasma zbadano młynkiem hydrometrycznym przepływy w osiemnastu ciekach. W obrębie zlewni Ochotnicy, będącej zlewnią kontrolowaną, wykonano dodatkowo pomiary przepływów dla siedmiu zlewni cząstkowych. Na podstawie danych Instytutu Meteorologii i Gospodarki Wodnej (IMGW) określono sytuację meteorologiczną przed i w czasie wykonania pomiarów. Wyznaczono dla posterunku na Ochotnicy w Tylmanowej przepływy charakterystyczne z wielolecia 1980-2011. Posterunek wodowskazowy IMGW w Tylmanowej traktowano jako reprezentatywny dla obszaru Gorców i przyjęto, że w Gorcach w danym czasie występują przepływy w tej samej strefie co na Ochotnicy.Pierwsza seria pomiarowa (8-10.06.12 r.) została przeprowadzona w czasie trwania na posterunku w Tylmanowej przepływu zbliżonego do niskiego średniego przepływu (NSQ – 1,18 m3•s-1), a druga (6-7.10.12 r.) w czasie trwania średniego niskiego przepływu (SNQ – 0,38 m3•s-1). Za wartość odpowiadającą odpływowi podziemnemu, w myśl metody Wundta, przyjęto drugą serię pomiarową. W Gorcach moduł odpływu podziemnego wynosi 0,6–8,6 dm3•s-1•km-2. Część zachodnia pasma charakteryzuje się najwyższym modułem odpływu podziemnego. Odpływ podziemny w Gorcach jest silnie zróżnicowany przestrzennie, a główną tego przyczyną jest zróżnicowanie średniej rocznej sumy opadu w ich obrębie.
Groundwater discharge (base flow) was measured in the Gorce Mountain catchments. Reseach were taken in 2012. Spatial distribution and detereminants of base flow in Gorce Mountains were analyzed.During low flow period with current meter method flow was defined in eighteen catchments. In Ochotnica Catchment (controlled catchment), extra research of flow in seven unganged catchment was implemented. Based on data from Institute of Meteorology and Water Management meteorological and hydrological situation before and during research was define. Flow characteristics for Ochotnica River in Tylmanowa were computed for the period 1981–2011. Water gauge on Ochotnica were established as representative for Gorce Mountains area.Two series of fieldwork were taken. First (8-10.06.12 r.) during average flow, and second (6-7.10.12 r.) during low flow period in Gorce catchment was estimated. Referring to Wundt’s method baseflow was represented by second fieldwork.In Gorce Mountains spatial differentiation of baseflow is observed. Module is 0,6–8,6 dm3•s-1•km-2. Baseflow in western part of that massive is the highest and decrease in east direction, what is result of spatial differentiation of average annual rainfall.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Inne

na półce

Skocz do pozycji: 7.

Tytuł:: Internet na świecie. Przestrzenne zróżnicowanIe szybkości i dostępności łącz na kontynentach i w wybranych regionach świata
Internet in the world. Distribution of the speed and availability on continents and in selected regions of the world.
Autorzy:: Szymańska, Aleksandra
Opis:: Przedmiotem pracy jest zróżnicowanie przestrzenne dostępności, szybkości oraz nasycenia Internetem na świecie. W przypadku niniejszej pracy Internet traktowany jest jako medium i technologia równocześnie. Zebrano, zestawiono oraz przeanalizowano dane ilościowe na temat stopnia penetracji Internetem rynków krajowych oraz dostępnych na nich szybkości łącz stałych i mobilnych. Dane zostały zaprezentowane na mapach, wykresach i w tabelach. W pracy zarysowane zostały trendy w ujęciu globalnym oraz w podziale na regiony geograficzne, odpowiadające kontynentom. Dane opracowywane w pracy dotyczą lat 2017-2018.
The subject of the work is the distribution, accessibility and speed of the Internet in the world. The Internet is treated as a medium and technology simultaneously. Data on the Internet penetration of domestic markets and the speed of broadband and mobile connections were collected, summarized and analyzed. The outcomes of analysys was presented on maps, charts and tables. The work is outlining trends in a global perspective and by geographical regions, corresponding to the continents. Data compiled in the work relate to 2017-2018.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Inne

na półce

Informacja

Wyszukujesz frazę "spatial average" wg kryterium: Temat