خيارات البحث
النتائج 1 - 10 من 40
Consulting education in modern land use planning
2014
Kalna-Dubinyuk, T., National Univ. of Life and Environmental Sciences of Ukraine, Kiev (Ukraine) | Isachenko, A., State Univ. of Land Use Planning, Moscow (Russian Federation)
Consulting is a catalyst for scientific and technological progress in agriculture, promotes the dissemination of new knowledge, and is quite reasonable and necessary in the current socio and economic conditions. Organization of a system of land use planning - one of the main areas of regulation of land relations in the ongoing land reform. Training of specialists in the field of land use planning should include consulting and component for diffusion of innovation in achieving sustainable development of territories and effective use of agricultural land. The article concentrates on experience in consulting education at the National University of Life and Environmental Sciences of Ukraine and its using based State University of Land Use Planning in Moscow.
اظهر المزيد [+] اقل [-]Meteorology monitoring of the precipitable water vapour distribution in the atmosphere based on operational GNSS data processing at reference station network ZAKPOS
2014
Savchuk, S., Lviv Polytechnic National Univ. (Ukraine) | Kablak, N., Uzhhorod National Univ. (Ukraine) | Kalynych, I., Uzhhorod National Univ. (Ukraine) | Reity, O., Uzhhorod National Univ. (Ukraine)
Remote monitoring of the atmosphere is designed to obtain information about the state of the atmosphere. The principle of the remote monitoring system of the atmosphere is based on the registration and processing of spacecraft radio signals of the Global Navigation Satellite Systems (GNSS). The wet tropospheric delay component of the electromagnetic signal (Δρ sup(tropo) sub(w)), which is derived from the GNSS observations data analysis, is used to calculate the water vapour content in the atmosphere. It is well known, that this parameter is critical to meteorologists, because the water vapour content in the atmosphere is a key parameter in the construction of numerical weather modelling. In this article the IWV - Integrated Water Vapour has been estimated and the expected accuracy of its determination on the basis of the operational GNSS data processing from reference station network ZAKPOS and the results of aerologic sensing of the atmosphere are given.
اظهر المزيد [+] اقل [-]Application of GNSS technology to solving meteorology problems
2017
Kablak, N., Uzhhorod National Univ. (Ukraine) | Reity, O., Uzhhorod National Univ. (Ukraine)
The remote monitoring of atmosphere is designed to obtain information about the state of atmosphere. The principle of the remote monitoring of atmosphere is based on registering and processing of GLONASS/GPS radio signals. Modern networks of active reference stations allow us to solve both practical problems of geodesy, navigation, and purely scientific problems that are important in all geosciences. We propose to explore the existing infrastructure of national networks of active reference GNSS stations for remote sensing of the atmosphere in order to determine the water vapour content in the atmosphere as one of the major factors affecting weather.
اظهر المزيد [+] اقل [-]Inventory of land as the forming tool for the state land cadastre of Ukraine in modern conditions
2017
Bavrovska, N., National Univ. of Life and Environmental Sciences of Ukraine, Kiev (Ukraine) | Boryskevych, O., National Univ. of Life and Environmental Sciences of Ukraine, Kiev (Ukraine)
One of the primary measures of the land reform is to create the national land registry and related land information database, which can be formed only through a complete inventory of land. This article analyses land inventory data in the current stage of land cadastre functioning and development of land relations, as well as discusses justification of organizational and legislative preconditions for land inventory in Ukraine.
اظهر المزيد [+] اقل [-]Modelling of the spatial state of the ionosphere for the network GNSS stations of Ukraine
2017
Liubov Yankiv-Vitkovska, L., Lviv Polytechnic National Univ. (Ukraine)
The results of the determined ionization identifier TEC (Total Electron Content) for continuously operating reference Global Navigation Satellite Systems (GNSS) stations are analysed. On the one hand, the data reflect the state of the ionosphere during the observation; on the other hand, it is a substantial tool for accuracy improvement and reliable determination of coordinates of the observation place. It was decided to solve a problem of restoring the spatial position of the ionospheric state or its ionization field according to the regular definitions of the TEC identifier, i.e. VTEC (Vertical TEC). We have described one possible way of solving this problem, which is based on mathematical modelling by using degree polynomials and trigonometric Fourier series. Degree polynomials describe the trend of function, whereas the trigonometric Fourier series are used in order to better simulate the fluctuation. The method was tested for network of permanent stations ZAKPOS.
اظهر المزيد [+] اقل [-]Analysis of approaches in integration of common solutions of different space geodetic techniques
2017
Khoptar, A., Lviv Polytechnic National Univ. (Ukraine)
The role of space geodetic techniques combination is becoming increasingly important to calculate the geodetic parameters. It has an intention of using the advantages and complementarity of different techniques to achieve the best solution. Estimation of geodetic parameters from observations mainly was done by least squares adjustment within the Gauss - Markov model. The combination can be done at three different levels: observations, normal equations and parameters. This article analyses the differences between the approaches and discusses the possibility of troposphere parameters calculation from a theoretical point of view.
اظهر المزيد [+] اقل [-]Peculiarities and prospects of solving land degradation problem in Ukraine
2016
Stoiko, N., Lviv National Agrarian Univ. (Ukraine) | Tkachuk, L., Lviv National Agrarian Univ. (Ukraine)
In Ukraine, degradation of land resources is a complex ecological problem, preventing sustainable development of land employment. Land protection from degradation requires development of measures in the process of land management at regional and local levels. Efficiency of the measures depends considerably on reliable information about quantitative and qualitative conditions of lands, due to the fact that it forces timeliness of the research. The aim of the research is to study problems of land degradation in terms of land management while developing measures of land resource protection. To reach this aim, the following tasks were set out: to analyse the drawbacks of informational support in terms of land management fulfilment at the current stage of land relations development; to describe prospective ways to implement the measures on land protection from degradation in Ukraine. Methodological basis of the research is includes the method of system analysis (performed while studying the process of land resource degradation) and cartographic method (employed while detecting the spread of degradation processes and its drawbacks in land employment). The research has determined that soil maps and plans of employment of lands do not provide reliable information about quantitative and quantitative conditions of land resources. The existing organisation of land use, first arable one, does not always correspond to soil-conserving requirements. It is proposed: to update plan-cartographic material based on space images and data of agrochemical classification of agricultural lands; to establish efficient organisational and economic mechanisms to implement ecological policy in the field of land management.
اظهر المزيد [+] اقل [-]Densification ITRF08 into Ukraine area
2017
Savchuk, S., Polish Air Force Academy, Deblin (Poland) | Doskich, S., Lviv Polytechnic National Univ. (Ukraine)
According to the fast development and distribution of GNSS technologies all over the world, the large numbers of reference GNSS stations have appeared in Ukraine. These stations are included in the state and several private networks. The permanent GNSS observations gathered within these networks are processed and analysed by the Centre of Lviv Polytechnic National University. A cumulative solution (coordinates expressed at the specified epoch and velocities of all stations) was estimated by using the GAMIT-GLOBK software. The authors made several numerous tests using certain configuration of fiducial stations which belong to the EPN A class to transfer ITRF08 frame into Ukraine area and choose the best strategy of alignment of the Ukrainian national GNSS network to the EPN. Three different solutions with cretin tolerance set for Ukrainian GNSS network were estimated and each time the different set of coordinates was obtained. The differences reached several millimetres. Also for verification, our solution was compared with EPN solution. Received coordinates and velocities could have a geophysical interpretation and provide very useful information for local geodesy tasks.
اظهر المزيد [+] اقل [-]Seasonal deformation processes at underground gas storage stations
2017
Perovych, L., Lviv Polytechnic National Univ. (Ukraine) | Begin, S., Ivano-Frankivsk National Technical Univ. of Oil and Gas (Ukraine)
This article is concerned with the problem of establishing process equipment deformation regularities, in particular, gas engine compressors at the compressor station of underground gas storage facility in Bohorodchany due to ground topographic surface vertical movements caused by gas flooding into and extraction from the reservoir bed in different seasons. Values of longitudinal and lateral pitches of gas-engine-compressor units’ foundation plates were determined using the results of topographic surface vertical movements monitoring. This provides an opportunity to predict adverse processes in gas engine compressors operation. On the other hand, this monitoring facilitates resolution of land resources sustainable and efficient use issues at underground gas storage territories.
اظهر المزيد [+] اقل [-]Application of foreign experience for improvement of land relations in agriculture of Ukraine
2015
Dudych, H., Lviv National Agrarian Univ. (Ukraine) | Dudych, L, Lviv National Agrarian Univ. (Ukraine)
The main peculiarities of land relations abroad are highlighted in the article. Basic principles of foreign experience of land use regarding market circulation of land, concentration of major land resources by right of ownership as well as the process and ways of reformation of land relations are generalized and systematized. Some peculiarities of lease relations, collection of rents and restrictions on title to land for foreigners are analysed. Some positive aspects are distinguished in order to use them in Ukraine. Some ways of improvement of land legislation in Ukraine are suggested taken into account foreign experience.
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