14 results on '"Belenok, Vadym"'
Search Results
2. Temporal Variations in Land Surface Temperature within an Urban Ecosystem: A Comprehensive Assessment of Land Use and Land Cover Change in Kharkiv, Ukraine.
- Author
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Rees, Gareth, Hebryn-Baidy, Liliia, and Belenok, Vadym
- Subjects
LAND surface temperature ,URBAN ecology ,LAND cover ,URBAN heat islands ,LAND use ,ECOSYSTEMS ,CLIMATE change - Abstract
Remote sensing technologies are critical for analyzing the escalating impacts of global climate change and increasing urbanization, providing vital insights into land surface temperature (LST), land use and cover (LULC) changes, and the identification of urban heat island (UHI) and surface urban heat island (SUHI) phenomena. This research focuses on the nexus between LULC alterations and variations in LST and air temperature (T
air ), with a specific emphasis on the intensified SUHI effect in Kharkiv, Ukraine. Employing an integrated approach, this study analyzes time-series data from Landsat and MODIS satellites, alongside Tair climate records, utilizing machine learning techniques and linear regression analysis. Key findings indicate a statistically significant upward trend in Tair and LST during the summer months from 1984 to 2023, with a notable positive correlation between Tair and LST across both datasets. MODIS data exhibit a stronger correlation (R2 = 0.879) compared to Landsat (R2 = 0.663). The application of a supervised classification through Random Forest algorithms and vegetation indices on LULC data reveals significant alterations: a 70.3% increase in urban land and a decrement in vegetative cover comprising a 15.5% reduction in dense vegetation and a 62.9% decrease in sparse vegetation. Change detection analysis elucidates a 24.6% conversion of sparse vegetation into urban land, underscoring a pronounced trajectory towards urbanization. Temporal and seasonal LST variations across different LULC classes were analyzed using kernel density estimation (KDE) and boxplot analysis. Urban areas and sparse vegetation had the smallest average LST fluctuations, at 2.09 °C and 2.16 °C, respectively, but recorded the most extreme LST values. Water and dense vegetation classes exhibited slightly larger fluctuations of 2.30 °C and 2.24 °C, with the bare land class showing the highest fluctuation 2.46 °C, but fewer extremes. Quantitative analysis with the application of Kolmogorov-Smirnov tests across various LULC classes substantiated the normality of LST distributions p > 0.05 for both monthly and annual datasets. Conversely, the Shapiro-Wilk test validated the normal distribution hypothesis exclusively for monthly data, indicating deviations from normality in the annual data. Thresholded LST classifies urban and bare lands as the warmest classes at 39.51 °C and 38.20 °C, respectively, and classifies water at 35.96 °C, dense vegetation at 35.52 °C, and sparse vegetation 37.71 °C as the coldest, which is a trend that is consistent annually and monthly. The analysis of SUHI effects demonstrates an increasing trend in UHI intensity, with statistical trends indicating a growth in average SUHI values over time. This comprehensive study underscores the critical role of remote sensing in understanding and addressing the impacts of climate change and urbanization on local and global climates, emphasizing the need for sustainable urban planning and green infrastructure to mitigate UHI effects. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
3. Application of remote sensing methods for statistical estimation of organic matter in soils
- Author
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Belenok, Vadym, primary, Hebryn-Baidy, Liliia, additional, Bіelousova, Natalyya, additional, Zavarika, Halyna, additional, Kryachok, Sergíy, additional, Liashenko, Dmytro, additional, and Malik, Tetiana, additional
- Published
- 2023
- Full Text
- View/download PDF
4. Astrogeodetic Methodology Evaluation for Vertical Deflection Determination in Oil and Gas Exploration: A Case Study in a Ukrainian Deposit
- Author
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Burachek, Vsevolod, Kryachok, Sergiy, Belenok, Vadym, Gladilin, Valeriy, Liashenko, Dmytro, Ivanyshyn, Volodymyr, Burachek, Vsevolod, Kryachok, Sergiy, Belenok, Vadym, Gladilin, Valeriy, Liashenko, Dmytro, and Ivanyshyn, Volodymyr
- Abstract
Despite the global efforts to transition towards environmentally friendly energy sources, traditional resources such as oil and gas continue to play a crucial role in meeting energy demands. The features of the following geophysical methods application for mineral exploration are considered: magnetic, electrical, radioactive, seismic, well logging, as well as multispectral aerospace surveys and field spectrometry. Among these methods, the gravity method, specifically its astrogeodetic variant utilizing zenith cameras and GPS positioning, emerges as a highly effective approach for detecting oil and gas deposits. A comprehensive review of literature sources and patent documentation is conducted, focusing on the construction and accuracy characteristics of both analog and digital zenith cameras. The methodology involving a digital zenith camera and GPS receiver for determining the deflections of the vertical in a test site within the Chernihiv region (Ukraine) is examined. The positive results obtained from this exploration not only validate the effectiveness of the approach but also enable the possibility of oil-bearing horizons identification. The paper derives formulas for calculating the accuracy of the deflections of the vertical determinations through the astrogeodetic method, specifically tailored for local areas. These formulas empower researchers to conduct a priori accuracy calculations, facilitating the determination of permissible distances between zenith cameras and GPS receivers when installed separately, ranging from 1.05 m to 1.76 m., Unatoč globalnim naporima da se prijeđe na ekološki prihvatljive izvore energije, tradicionalni resursi poput nafte i plina i dalje igraju ključnu ulogu u ispunjavanju energetskih zahtjeva. Razmatraju se značajke primjene sljedećih geofizičkih metoda za istraživanje minerala: magnetska, električna, radioaktivna, seizmička, karotažna mjerenja u bušotinama, kao i multispektralna mjerenja u zračnom prostoru i terenska spektrometrija. Među tim metodama, gravimetrijska metoda, posebno njezina astro-geodetska varijanta koja primjenjuje zenit-kamere i GPS pozicioniranje, pojavljuje se kao vrlo učinkovit pristup za otkrivanje nalazišta nafte i plina. Proveden je opsežan pregled izvora literature i patentne dokumentacije, s naglaskom na karakteristike konstrukcije i točnosti analognih i digitalnih zenit-kamera. Ispituje se metodologija koja uključuje digitalnu zenit-kameru i GPS prijamnik za određivanje otklona vertikale na mjestu ispitivanja u regiji Chernihiv (Ukrajina). Pozitivni rezultati dobiveni ovim istraživanjem ne samo da potvrđuju učinkovitost pristupa, već također omogućuju mogućnost identifikacije naftonosnih horizonata. U radu su izvedene formule za izračunavanje točnosti određivanja otklona vertikale astro-geodetskom metodom, posebno prilagođene lokalnim područjima. Te formule omogućuju istraživačima da provode a priori izračune točnosti, olakšavajući određivanje dopuštenih udaljenosti između zenit-kamera i GPS prijamnika kada su instalirani odvojeno, u rasponu od 1,05 m do 1,76 m.
- Published
- 2023
5. Machine learning based combinatorial analysis for land use and land cover assessment in Kyiv City (Ukraine)
- Author
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Belenok, Vadym, primary, Hebryn-Baidy, Liliia, additional, Bielousova, Nataliia, additional, Gladilin, Valeriy, additional, Kryachok, Sergíy, additional, Tereshchenko, Andrii, additional, Alpert, Sofiia, additional, and Bodnar, Sergii, additional
- Published
- 2023
- Full Text
- View/download PDF
6. THE SPACE MONITORING OF CHANGES IN THE AREA OF WATER OBJECTS IN THE KYIV REGION IN THE PERIOD 1990–2020
- Author
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Belenok, Vadym, primary and Frolova, Anastasiia, additional
- Published
- 2023
- Full Text
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7. ACCURACY OF COORDINATE DETERMINATIONS OF THE NETWORK OF PROTECTED ZONE POINTS ACCORDING TO THE RESULTS OF GNSS OBSERVATIONS
- Author
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Tereshchuk, Oleksiy, primary, Kryachok, Sergiy, additional, and Belenok, Vadym, additional
- Published
- 2022
- Full Text
- View/download PDF
8. DETERMINING THE FORM OF ERROR DISTRIBUTION OF GEODETIC MEASURING
- Author
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Gladilin, Valeriy, primary, Belenok, Vadym, additional, and Shudra, Nataliia, additional
- Published
- 2022
- Full Text
- View/download PDF
9. New Formula for Finding the Correlation Coefficient in Geodetic Measurements for a Small Number of Observations
- Author
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Gladilin, Valeriy, Belenok, Vadym, Kryachok, Sergiy, Siroshtan, Tetiana, Hamalii, Iryna, Gladilin, Valeriy, Belenok, Vadym, Kryachok, Sergiy, Siroshtan, Tetiana, and Hamalii, Iryna
- Abstract
When performing geodetic surveys, the number of measurements is usually small, which in the case of dependent series of measurements leads to an underestimation of the correlation coefficient calculated by the standard formula. A new formula for determining the correlation coefficient is proposed. The values of correlation coefficients calculated by the new formula and by the known ones were compared for the number of measurements . It was found that the correlation coefficient values calculated by the new formula will have higher values as compared to the values calculated by the known formulas, i.e. these values will be less biased with respect to the true values of the correlation coefficients. The correlation coefficients obtained by the new formula will be maximal at an appropriate level of significance and number of degrees of freedom. With a large number of measurements, the values of correlation coefficients obtained by the new formula and by the formulas that are widely used in geodesy and photogrammetry will not differ significantly., Prilikom izvođenja geodetskih izmjera, broj mjerenja je obično mali što u slučaju serije ovisnih mjerenja dovodi do niske procjene koeficijenta korelacije izračunatog pomoću standardne formule. Predlaže se nova formula za određivanje koeficijenta korelacije. Uspoređene su vrijednosti koeficijenta korelacije izračunate pomoću nove formule i pomoću poznatih formula za broj mjerenja . Utvrđeno je da će vrijednosti koeficijenta korelacije izračunate novom formulom biti veće u usporedbi s vrijednostima izračunatima pomoću poznatih formula, odnosno te vrijednosti će biti manje pristrane u odnosu na prave vrijednosti koeficijenata korelacije. Koeficijenti korelacije dobiveni pomoću nove formule bit će maksimalni na odgovarajućoj razini značaja i broja stupnjeva slobode. Za veliki broj mjerenja, vrijednosti koeficijenata korelacije dobivene novom formulom i formulama čija je upotreba raširena u geodeziji i fotogrametriji neće se značajno razlikovati.
- Published
- 2022
10. Modern Technologies of Geodetic Support of Planning Works in High-Rise Construction
- Author
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Novomlynets, Oleh, Tereshchuk, Oleksiy, Kriachok, Sergiy, Belenok, Vadym, Sharyi, Hryhorii, Gladilin, Valeriy, Novomlynets, Oleh, Tereshchuk, Oleksiy, Kriachok, Sergiy, Belenok, Vadym, Sharyi, Hryhorii, and Gladilin, Valeriy
- Abstract
The work shows the shortcomings of traditional geodetic technologies in the limited space of a modern construction site on the basis of research and analysis of literature sources, regulatory and production base of geodetic support in the construction of multi-storey buildings. Today, electronic tacheometers are used to perform planning works, which allowed to perform planning of building structures without bringing the building axes of the building to the ground, which, in its turn, had an extremely positive effect on compliance with deadlines of construction. When creating a support base on prefabricated horizons during the construction of buildings up to 150 m, it is suggested to use satellite technology with subsequent planning of building structures directly using electronic tacheometers., U radu se prikazuju nedostaci tradicionalnih tehnologija u ograničenom prostoru suvremenoga gradilišta na temelju istraživanja i analize literature, regulatorne i proizvodne osnove geodetske podrške u izgradnji višekatnih zgrada. Danas se elektronički tahimetri primjenjuju za provedbu radova u planiranju, što je omogućilo izvođenje planiranja građevinskih konstrukcija bez spuštanja građevnih osi objekta na tlo što je imalo pozitivan učinak na poštivanje rokova izgradnje. Prilikom uspostave potporne osnove na montažnim horizontima tijekom izgradnje zgrada visine do 150 m predlaže se primjena satelitske tehnologije s naknadnim planiranjem građevinskih konstrukcija primjenom elektroničkih tahimetara.
- Published
- 2022
11. Nova formula za izračun koeficijenta korelacije u geodetskim mjerenjima za mali broj opažanja
- Author
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Gladilin, Valeriy, Belenok, Vadym, Kryachok, Sergiy, Siroshtan, Tetiana, and Hamalii, Iryna
- Subjects
koeficijent korelacije ,nepristrani i pristrani procjenitelj koeficijenta korelacije ,izračunavanje koeficijenta korelacije u geodeziji ,nova metoda izračunavanja koeficijenta korelacije ,regresijska jednadžba ,correlation coefficient ,unbiased and biased estimator of correlation coefficient ,calculating the correlation coefficient in geodesy ,new method for calculating the correlation coefficient ,regression equation - Abstract
When performing geodetic surveys, the number of measurements is usually small, which in the case of dependent series of measurements leads to an underestimation of the correlation coefficient calculated by the standard formula. A new formula for determining the correlation coefficient is proposed. The values of correlation coefficients calculated by the new formula and by the known ones were compared for the number of measurements . It was found that the correlation coefficient values calculated by the new formula will have higher values as compared to the values calculated by the known formulas, i.e. these values will be less biased with respect to the true values of the correlation coefficients. The correlation coefficients obtained by the new formula will be maximal at an appropriate level of significance and number of degrees of freedom. With a large number of measurements, the values of correlation coefficients obtained by the new formula and by the formulas that are widely used in geodesy and photogrammetry will not differ significantly., Prilikom izvođenja geodetskih izmjera, broj mjerenja je obično mali što u slučaju serije ovisnih mjerenja dovodi do niske procjene koeficijenta korelacije izračunatog pomoću standardne formule. Predlaže se nova formula za određivanje koeficijenta korelacije. Uspoređene su vrijednosti koeficijenta korelacije izračunate pomoću nove formule i pomoću poznatih formula za broj mjerenja . Utvrđeno je da će vrijednosti koeficijenta korelacije izračunate novom formulom biti veće u usporedbi s vrijednostima izračunatima pomoću poznatih formula, odnosno te vrijednosti će biti manje pristrane u odnosu na prave vrijednosti koeficijenata korelacije. Koeficijenti korelacije dobiveni pomoću nove formule bit će maksimalni na odgovarajućoj razini značaja i broja stupnjeva slobode. Za veliki broj mjerenja, vrijednosti koeficijenata korelacije dobivene novom formulom i formulama čija je upotreba raširena u geodeziji i fotogrametriji neće se značajno razlikovati.
- Published
- 2022
12. Suvremene tehnologije geodetske podrške u planiranju radova u visokogradnji
- Author
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Novomlynets, Oleh, Tereshchuk, Oleksiy, Kriachok, Sergiy, Belenok, Vadym, Sharyi, Hryhorii, and Gladilin, Valeriy
- Subjects
construction of structural axes ,mounting horizon ,design work ,electronic tacheometers ,landmarks ,GNSS technology ,building construction ,izvođenje osi građevine ,montažni horizont ,radovi u planiranju ,elektronički tahimetar ,orijentiri ,GNSS tehnologija ,visokogradnja - Abstract
The work shows the shortcomings of traditional geodetic technologies in the limited space of a modern construction site on the basis of research and analysis of literature sources, regulatory and production base of geodetic support in the construction of multi-storey buildings. Today, electronic tacheometers are used to perform planning works, which allowed to perform planning of building structures without bringing the building axes of the building to the ground, which, in its turn, had an extremely positive effect on compliance with deadlines of construction. When creating a support base on prefabricated horizons during the construction of buildings up to 150 m, it is suggested to use satellite technology with subsequent planning of building structures directly using electronic tacheometers., U radu se prikazuju nedostaci tradicionalnih tehnologija u ograničenom prostoru suvremenoga gradilišta na temelju istraživanja i analize literature, regulatorne i proizvodne osnove geodetske podrške u izgradnji višekatnih zgrada. Danas se elektronički tahimetri primjenjuju za provedbu radova u planiranju, što je omogućilo izvođenje planiranja građevinskih konstrukcija bez spuštanja građevnih osi objekta na tlo što je imalo pozitivan učinak na poštivanje rokova izgradnje. Prilikom uspostave potporne osnove na montažnim horizontima tijekom izgradnje zgrada visine do 150 m predlaže se primjena satelitske tehnologije s naknadnim planiranjem građevinskih konstrukcija primjenom elektroničkih tahimetara.
- Published
- 2022
13. ПРИСТРІЙ ВИЗНАЧЕННЯ ПОЛОЖЕННЯ ВЕРТИКАЛІ НА БЕЗПІЛОТНИХ ЛІТАЛЬНИХ АПАРАТАХ, ПРИЗНАЧЕНИХ ДЛЯ АЕРОЗНІМАННЯ
- Author
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Tereshchuk, Oleksiy, primary, Kryachok, Serhiy, additional, Belenok, Vadym, additional, Mamontova, Lyudmila, additional, and Boiko, Olena, additional
- Published
- 2021
- Full Text
- View/download PDF
14. GEOINFORMATION MAPPING OF ANTHROPOGENICALLY TRANSFORMED LANDSCAPES OF BILA TSERKVA (UKRAINE).
- Author
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Belenok, Vadym, Hebryn-Baidy, Liliia, Belousova, Nataliia, Zavarika, Halyna, Sakal, Oksana, and Kovalenko, Andriy
- Subjects
REMOTE-sensing images ,REMOTE sensing ,LANDSCAPES ,DOWNLOADING ,BODIES of water - Abstract
Aim of the study The main purpose of the study is the analysis and assessment of anthropogenically transformed landscapes of Bila Tserkva (Ukraine) based on a combination of remote sensing methods and GIS mapping. Material and methods Usage of geoinformatics methods for mapping anthropogenically transformed landscapes of Bila Tserkva is studied. The data was downloaded and processed using the QGIS Semi-Automatic Classification Plugin for the supervised classification of remote sensing data. Satellite images were radiometrically calibrated and atmospherically corrected, followed by a controlled classification with signature creation, visualization of spectral profiles, quality assessment and post-processing. Results and conclusion The main methods of landscape research are analyzed. The conclusion is made about the expediency of using spectrophotometry of satellite images in order to identify different types of landscapes based on satellite data. A supervised classification of satellite images different-time images was performed, as a result of which the main Bila Tserkva landscape types were identified. Those identified types are: water bodies, vegetation (grass, forest, parks), urban areas, and bare soils. Spatio-temporal changes of landscapes are studied and these changes are described in quantitative indicators. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
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