506 research outputs found
Land cover Maps for Luhansk region (1996, 2000, 2013, 2020) with style
No full text<p><strong>Occupation of Environment: Long-Term Consequences of war in Ukraine on conservation of forested areas of Emerald Network in the Luhansk region - </strong>Land cover maps for Luhansk region (1996, 2000, 2013, 2020)</p>
Monitoring of the SDG 2.4.1 and 15.3.1 indicators on the CREODIAS platform with using in-situ data
No full textLand degradation neutrality in Agenda 2030 is the scientific, politic, economic, and social UNCCD conceptual framework in sustainable development in epoch of world economy decarbonization – net zero carbon 2050. For monitoring this LDN process to decision making was proposed SDG 2.4.1. and 15.3.1 indicators on international and national levels.
To calculate NDVI index for 8 Ukrainian regions with using CREODIAS platform the Sentinel-1,2 and Landsat-8 mission images and in-situ Ukrainian data was analyzed.
Calculation of the NDVI index, which is available from EO data of Landsat 8, Sentinel 1, 2, comes first for different regions of the Ukraine: Chernihiv, Mykolaiv, Dnipropetrovsk, Kherson, Vinnytsia, Zhytomyr, Cherkasy, Sumy. In addition, NDVI is often used in Ukraine as around the world to monitor drought, forecast agricultural production, assist in forecasting fire zones, and desert offensive maps. Farming apps, like Crop Monitoring, integrate NDVI to facilitate crop scouting and give precision to fertilizer application and irrigation, among other field treatment activities, at specific growth stages. NDVI is preferable for global vegetation monitoring since it helps to compensate for changes in lighting conditions, surface slope, exposure, and other external factors.
The interpretation NDVI indexes on the examples of October 2021 normalized difference vegetation indexes for different regions of the Ukraine, for example Chernihiv, Mykolaiv, Dnipropetrovsk, Kherson, Vinnytsia, Zhytomyr, Cherkasy, Sumy is underpinned by a conceptual model that perceives land as a socioecological Ukrainian system (a coupled human-natural system); hence, labelling a land unit in Ukraine as degraded requires a synergy of utilitarian (human-driven) and ecological (ecosystem function and structure) in the context of SDG 2.4.1 and 15.3.1 index calculation. Land cover classification systems derived from EO Data from CREODIAS platform and in-situ data are important tools to describe the natural and urban environment of the Ukraine for different science research demands and effective agriculture workflow process organization [1, 2].
The authors acknowledge the funding received by Horizon 2020 e-shape project (Grant Agreement No 820852).
REFERENCES
1. Nataliia Kussul, Mykola Lavreniuk, Andrii Kolotii, Sergii Skakun, Olena Rakoid & Leonid Shumilo (2020) A workflow for Sustainable Development Goals indicators assessment based on high-resolution satellite data, International Journal of Digital Earth, 13:2, 309-321, DOI: 10.1080/17538947.2019.1610807.
2. N. Kussul, A. Shelestov, M. Lavreniuk, I. Butko and S. Skakun, "Deep learning approach for large scale land cover mapping based on remote sensing data fusion," 2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016, pp. 198-201, doi: 10.1109/IGARSS.2016.7729043
Workflow Modelling in Grid System for Satellite Data Processing
No full textThis paper focuses on a problem of Grid system decomposition by developing its object model. Unified
Modelling Language (UML) is used as a formalization tool. This approach is motivated by the complexity of the
system being analysed and the need for simulation model design
The Worlds of travelling by Andrii Bludov
No full textСтаттю присвячено аналізу серії полотен "Сицзан" відомого сучасного художника Андрія Блудова. Зустрівшись із культурою Сходу (Тибет), митець по-новому інтерпретує пластичні прийоми, які
властиві його стилістиці. Проте чари медитації повною мірою не захопили свідомості Блудова, він
наполягає на необхідності динамічного життя. Автора не можна назвати митцем однієї інтелектуальної та пластичної теми, оскільки у його доробку – експерименти різних видів і технік мистецтва.
Художник визначає власну творчість як «прикордонну», що існує на межі абстракції та внутрішнього реалізму. У творах Блудова існують архетипові образи-знаки, що мандрують з одного полотна
на інше. Андрій Блудов маніфестує ідеї благочестя та мудрості в час, коли соціальний активізм захопив свідомість більшості українських художників. Повна художня та інтелектуальна інформація
полотен Блудова відкривається, якщо глядач готовий сприйняти її на чуттєвому та розумовому рівнях.This article analyzes the series of paintings “Sytszan” by famous contemporary artist Andrii Bludov.
Faced with the culture of the East (Tibet), he interprets this theme in new plastic techniques within his style.
But the spell of meditation did not fully capture Bludov’s consciousness; he insisted on the necessity of
a dynamic life. The author cannot be called an artist of a particular style. Different plastic and intellectual
themes occur in his works of different types. He experiments in techniques of art.
In the compositions of the author, a devoted meditation is shown as the basic idea of religious life in Tibet.
Bludov riches a difficult task to depict spatial emptiness not as nature but as a spiritual and psychological
phenomenon. In the series “Sytszan”, metaphor reaches the limit of expressiveness and credibility. The metaphor
arises as a need of the artist in a short period of time (time constraints film, performances, and art).
In the same compositions. the painter depicts the world of human relations and cultural situations, a large
reservoir of life. Then he turns to the images-metaphors for installation. Metaphor is a working tool in the
works of Andrii Bludov. It meets the needs of modern outlook on the parallel introduction of countervailing
information into a single structural artwork unit.
The artist defines his own work as «border» on the verge of abstraction and internal realism in the sense
of mystical realism. In the works of Bludov, archetypes are images of characters that travel from one canvas
to another. The full artistic and intellectual information of Andrii Bludov’s paintings will open if the viewer
is ready to accept them on the sensory and mental levels
Agent-based Anomalies Monitoring in Distributed Systems
No full textIn this paper an agent-based approach for anomalies monitoring in distributed systems such as
computer networks, or Grid systems is proposed. This approach envisages on-line and off-line monitoring in order
to analyze users’ activity. On-line monitoring is carried in real time, and is used to predict user actions. Off-line
monitoring is done after the user has ended his work, and is based on the analysis of statistical information
obtained during user’s work. In both cases neural networks are used in order to predict user actions and to
distinguish normal and anomalous user behavior
Biophysical parameters mapping within the SPOT-5 Take 5 initiative
No full textLeaf area index and Fraction of Absorbed Photosynthetically Active Radiation are important land biophysical parameters that enable monitoring and quantitative assessment of vegetation state. Remote sensing data from space can be used to estimate these parameters at regional and national scale. High temporal satellite imagery is usually required to capture main parameters of crop growth. In this paper, we assess efficiency of using satellite images at high spatial and temporal resolution acquired within the SPOT-5 Take 5 initiative for mapping biophysical parameters
Quasispin models in quantum physics
No full textTitle: Quasispin models in quantum physics Author: Andrii Zymin Department: Institute of Particle and Nuclear Physics Supervisor: Mgr. Pavel Stránský, Ph.D., Institute of Particle and Nuclear Physics Abstract: The use of symmetries in quantum physics helps in a deeper understanding of physical systems and simplifies numerical calculations. This thesis studies models based on the SU(2) algebra, which, in spite of their apparent simplicity, show rather rich behavior and describe a wide spectrum of physical phenomena. We review various realizations of the SU(2) algebra (namely the spin, boson, and fermion realization) and present the most general quantum hamiltonian with one- and two-body interactions, constructed from the SU(2) generators. We perform the classical limit of the hamiltonian and show a numerical study of several particular examples. Keywords: dynamical symmetries, Lipkin model, su(2) algebra, quasispi
Role of surface defects in ceria-based catalysis
No full textTitle: Role of surface defects in ceria-based catalysis Author: Andrii Tovt Department: Department of Surface and Plasma Science Supervisor of the doctoral thesis: doc. Mgr. Josef Mysliveček Ph.D., Department of Surface and Plasma Science Abstract: This work concentrates on the analysis of fundamental physicochemical properties of Pt-CeOx, single-atom Pt1 /CeOx, and inverse CeOx/Cu(111) catalysts. Preparation method for stabilized atomically-dispersed Pt2+ ions on ceria was developed and adsorption sites for Pt ions were thoroughly studied using advanced surface science techniques supported by theoretical methods. The mechanism of Pt2+ stabilization on ceria steps was revealed and the step capacity towards Pt2+ ions was estimated. Also, the preparation method for well-ordered cerium oxide ultrathin films with different stoichiometry and ordering of surface oxygen vacancies was developed, and the Ceria/Cu(111) interaction was investigated. Key words: heterogeneous catalysis, model systems, single-atom catalysis, platinum ions, cerium oxide
Earth observation data science programs in National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
No full textNowadays, satellite monitoring and geospatial intelligence are the drivers of digital transformation and economic development all over the world. At the same time, in Ukraine there is no higher education programs dealing with Earth observation data science or machine and deep learning on remote sensing data. In 2019, Space Research Institute in cooperation with the Department of Mathematical Modeling and Data Analysis (MMDA department) of National Technical University of Ukraine “Kyiv Polytechnic Institute” (NTUU “KPI”) joined the Copernicus Academy network for deeper involvement into educational activities related to the Copernicus program. As Copernicus Academy laboratory, we contribute into international scientific and innovative international programs, provide trainings and master classes for students, regional administrations and teachers. Most of our projects deal with machine learning on satellite and auxiliary data and satellite monitoring applications and require deep knowledge of mathematics, machine learning and data analysis.
To facilitate involvement of students into our projects, in 2021 MMDA department established a certificate program “Models and methods of intellectual analysis of heterogeneous data” for master students of Applied Mathematics specialty (https://mmda.ipt.kpi.ua/en/certificate-program-models-and-methods-of-intellectual-analysis-of-heterogeneous-data/). It includes big geospatial data analysis, geospatial information technologies and deep learning for satellite and heterogeneous data. It allows students to dive into Earth observation domain and bridge the gap between applied mathematics and satellite monitoring. Students do their master’s research within international projects, in particular, Horizon-2020 e-shape or NASA project “High-Impact Hot Spots of Land Cover Land Use Change: Ukraine and Neighboring Countries”. They develop machine learning models for different applications based on Copernicus data and implement them on different cloud platforms, such as GEE, CREODIAS and AWS. Some of them develop their startup projects based on this research.
For further development of our program and better motivation of our students we are interested in collaboration with similar programs for academic mobility of students and professors and looking for innovative educational forms and resources
Kvazispinové modely v kvantové fyzice
No full textNázev práce: Kvazispinové modely v kvantové fyzice Autor: Andrii Zymin Katedra: Ústav částicové a jaderné fyziky Vedoucí bakalářské práce: Mgr. Pavel Stránský, Ph.D., Ústavčásticové a jaderné fyziky Abstrakt: Využití symetrií v kvantové fyzice pomáhá k hlubšímu porozumění fyzikálních systémů a zjednodušuje numerické výpočty. Tato práce studuje modely založené na algebře SU(2), které i přes zdánlivou jednoduchost vykazují velmi bohaté chování a popisují široké spektrum fyzikálních jevů. Jsou shrnuty různé realizace algebry SU(2) (spinová, bosonová, fermionová). Je předložen nejobecnější tvar kvantového hamiltoniánu zkonstruovaného z generátorů SU(2), který zahrnuje všechny jednočásticové a dvoučásticové interakce, a jeho klasická limita. Několik konkrétních přikladů hamiltoniánu je detailně prezentováno numericky. Kličová slova: dynamické symetrie, SU(2) algebra, kvazispin, klasická limitaTitle: Quasispin models in quantum physics Author: Andrii Zymin Department: Institute of Particle and Nuclear Physics Supervisor: Mgr. Pavel Stránský, Ph.D., Institute of Particle and Nuclear Physics Abstract: The use of symmetries in quantum physics helps in a deeper understanding of physical systems and simplifies numerical calculations. This thesis studies models based on the SU(2) algebra, which, in spite of their apparent simplicity, show rather rich behavior and describe a wide spectrum of physical phenomena. We review various realizations of the SU(2) algebra (namely the spin, boson, and fermion realization) and present the most general quantum hamiltonian with one- and two-body interactions, constructed from the SU(2) generators. We perform the classical limit of the hamiltonian and show a numerical study of several particular examples. Keywords: dynamical symmetries, Lipkin model, su(2) algebra, quasispinÚstav částicové a jaderné fyzikyInstitute of Particle and Nuclear PhysicsMatematicko-fyzikální fakultaFaculty of Mathematics and Physic
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