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Tytuł:
Zastosowanie numerycznego modelu terenu do wizualizacji rzeźby terenu i interpretacji budowy geologicznej
A Digital Terrain Model in visualization and interpretation of geological and geomorphological settings
Autorzy:
Nita, J.
Małolepszy, Z.
Chybiorz, R.
Powiązania:
https://bibliotekanauki.pl/articles/2074533.pdf
Data publikacji:
2007
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
NMT
DEM
DTM
SRTM
DTED
GIS
kartografia geologiczna
wizualizacja 3D
digital maps
geological mapping
3D visualization
Opis:
Geological sciences have recently utilized a wide range of numerical methods to collect, analyze, visualize and interpret geospatial datasets both at industrial and academic level. Investigation of various elements of surface and subsurface structures using DEM (Digital Elevation Model), DTM (Digital Terrain Model) and SRTM (Shuttle Radar Topography Mission) data provides unique opportunities for depiction of geology and geomorphology in a form of three-dimensional maps. These digital maps should potentially replace traditional topographic maps in the nearest future. New numerical systems have enhanced significantly time efficiency of producing maps and related databases. Advance in detailed work on the high resolution maps and digital elevation computer-supported models is essential for precise and objective interpretation of large datasets. Available visualization systems produce sets of images and animations showing geospatial structures, processes and their relations in a multi-dimensional form commonly presented as stereo-pairs for presentation in an immersive environment or as anaglyphs. Utilization of web-accessible datasets of DTED level 0 and 1 and LandSat images is a new advantage in small and regional scale mapping.
Źródło:
Przegląd Geologiczny; 2007, 55, 6; 511-520
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zasięg obszarów objętych osuwiskami w Górach Kamiennych (Sudety Środkowe) : porównanie map geologicznych i cyfrowego modelu wysokości z danych LiDAR
The extent of landslide-affected areas in the Kamienne Mountains (Middle Sudetes) : a comparison of geological maps and a LiDAR based digital elevation model
Autorzy:
Migoń, P.
Jancewicz, K.
Kasprzak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2075163.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
landslides
digital elevation model (DEM)
lidar
geological mapping
Sudetes
osuwiska
cyfrowy model wysokości
LIDAR
mapowanie geologiczne
Sudety
Opis:
The east-central part of the Kamienne Mountains in the Sudetes has long been known as an area where landslides occur in abundance. Their extent was shown on first detailed geological maps from the early 20th century and later on Polish geological maps published in the 1970 and 1990. The total landslide area mapped was about 100 ha. The availability of LiDAR data allowed to build digital elevation models of very high resolution and to attempt landslide mapping using diagnostic landform assemblages as guidelines. 30 separate landslides have been mapped, including complex landslide areas involving overlapping landslide bodies oflikely different origin. The total landslide area is at least300 ha, while the largest complexes cover 40-50 ha. LiDAR-based models proved extremely useful in landslide mapping, espe- cially in forested areas.
Źródło:
Przegląd Geologiczny; 2014, 62, 9; 463--471
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thematic mapping of avalanche-threatened areas
Autorzy:
Babiy, L.
Hrytskiv, N.
Laykun, L.
Powiązania:
https://bibliotekanauki.pl/articles/100350.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
thematic mapping
avalanche hazard
surface geomorphometric parameters
digital elevation model
ArcGIS
odwzorowanie
lawina
ryzyko
Opis:
Providing avalanche-threatened areas with modern thematic data mapping is an urgent task. It will allow us to predict and prevent catastrophic consequences of snow avalanches. The purpose of this paper is to create a set of thematic raster maps of Polonyna Borzhava mountain ridge, including a physical map, a map of relative avalanche hazards, and a map of avalanche paths, on the basis of analysing certain morphometric and environmental factors. Modelling and analysing morphometric parameters of the ridge surface were implemented, and they were represented as factors of avalanche occurrence. The areas with consistent snow avalanche occurrence in the Polonyna Borzhava mountain ridge were allocated by combining cartographic material, remote sensing data, statistical meteorological data and some geomorphometric data about the surface in one unified geographic information system. Thematic mapping of snow avalanches of Polonyna Borzhava ridge has been implemented in the scale of 1:50000. The resulting thematic maps can be used when developing winter tourist routes.
Źródło:
Geomatics, Landmanagement and Landscape; 2017, 4; 15-26
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SMTBDD : New Form of BDD for Logic Synthesis
Autorzy:
Kubica, M.
Kania, D.
Powiązania:
https://bibliotekanauki.pl/articles/226064.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
logic synthesis
SMTBDD
decomposition
technology mapping
FPGA
digital circuits
Opis:
The main purpose of the paper is to suggest a new form of BDD - SMTBDD diagram, methods of obtaining, and its basic features. The idea of using SMTBDD diagram in the process of logic synthesis dedicated to FPGA structures is presented. The creation of SMTBDD diagrams is the result of cutting BDD diagram which is the effect of multiple decomposition. The essence of a proposed decomposition method rests on the way of determining the number of necessary ‘g’ bounded functions on the basis of the content of a root table connected with an appropriate SMTBDD diagram. The article presents the methods of searching non-disjoint decomposition using SMTBDD diagrams. Besides, it analyzes the techniques of choosing cutting levels as far as effective technology mapping is concerned. The paper also discusses the results of the experiments which confirm the efficiency of the analyzed decomposition methods.
Źródło:
International Journal of Electronics and Telecommunications; 2016, 62, 1; 33-41
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Small and low-cost mobile mapping systems
Małe i niedrogie mobilne systemy fotogrametryczne
Autorzy:
Kolecki, J.
Powiązania:
https://bibliotekanauki.pl/articles/385839.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
system mobilny
GPS
INS
kompas elektroniczny
fotogrametria naziemna
mobile mapping
direct georeferencing
IMU
digital compass sensor fusion
Opis:
Nowadays acquisition of large amount of data for various mapping applications like creation of a terrain, building or a building part models is performed mainly using laser scanners or photogrammetric methods. From early nineties we observe more intensive development of a mobile mapping systems integrating various types of cameras not only with positioning systems like GPS, but also with inertial measurements units (IMU) and other geo-referencing sensors. Such mobile mapping devices have obviously very high prices, are large-sized and have usually very high weight. There are however some lightweight constructions basing on alternative solutions other then those met in expensive commercial systems. The researches conducted among many institutions in the world show that such systems may be in fact constructed using relatively inexpensive devices, available on the market. The accuracy demands could be satisfied for a bulk of mapping applications. This paper addresses the topic of low-cost mobile mapping systems. First of all a few examples of such systems will be presented, and then more detailed overview of geo-referencing technologies will be given.
Obecnie pozyskiwanie dużej ilości danych na potrzeby budowy modelu terenu, budynku lub jego fragmentu w praktyce przeprowadzane jest głównie z wykorzystaniem technologii fotogrametrycznej lub skaningu laserowego. O początku lat 90. ubiegłego wieku ma miejsce intensywniejszy rozwój systemów mobilnych integrujących różnego typu kamery i aparaty fotograficzne z systemami do pomiaru pozycji, takimi jak na przykład GPS, oraz często także z jednostkami inercyjnymi. Tego typu systemy cechuje ze zrozumiałych względów wysoka cena oraz znaczna masa i rozmiary. Istnieją jednak konstrukcje tańsze, wykorzystujące często inne rozwiązanie niż te spotykane w systemach komercyjnych, pozwalające jednocześnie na konstrukcję systemu o mniejszej masie. Jak pokazuje praktyka badawcza, tego typu urządzenia mogą być z powodzeniem konstruowane z wykorzystaniem dostępnych na rynku komponentów. Niejednokrotnie tego typu systemy mobilne pozwalają na osiągnięcie wymaganych dla danego celu dokładności.
Źródło:
Geomatics and Environmental Engineering; 2011, 5, 2; 43-53
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of DTM derivatives most used in digital soil mapping
Autorzy:
Radło-Kulisiewicz, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2029261.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
digital soil mapping
DTM
terrain attributes
GIS
cyfrowe mapowanie gleby
cechy terenu
Opis:
Digital Soil Mapping (DSM) is a subdiscipline of pedology, where soil cover is modelled through use of spatial – temporal relations between environmental covariates and soil. The process of quantitative terrain description used in DSM is called terrain parametrization, where terrain attributes (morphometric factors, Digital Terrain Model derivatives) are the most used predicators. Terrain parameterisation was used as a tool in the hydrological survey workshop long before computers had been in use. With the development of digitisation, it also began to be used to determine selected soil attributes, which was greatly facilitated by GIS applications. A significant breakthrough in the importance of terrain attributes in the creation of soil maps and models took place with the formalisation of rules for digital soil mapping. Literature describes over 50 indices, although only a few of them are commonly applied. This applies to single soil attributes as well as more advanced implementations in more sophisticated models such as artificial intelligence algorithms. The aim of the following article is to present the main components of DSM and to describe characteristics of the most commonly derivatives of DTM applied there, also refers to several examples of the use of terrain parameters in the context of DSM in terms of the resolution of the elevation model used.
Źródło:
Geomatics, Landmanagement and Landscape; 2021, 2; 87-99
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology and results of digital mapping and 3D modelling of the Lower Palaeozoic strata on the East European Craton, Poland
Autorzy:
Papiernik, Bartosz
Michna, Michał
Powiązania:
https://bibliotekanauki.pl/articles/191670.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
3D structural models
parametric models
digital mapping
data integration
shale gas
Lower Palaeozoic
East European Platform
Opis:
The paper presents a multi-phase and multi-stage methodology of 3D structural-parametric modelling and mapping that has been applied during implementation of the GAZGEOLMOD project. The core of the applied processing workflows is a 3D geological model constructed in Petrel, which functions as a spatial database for all kinds of geological models. The first phase of the workflow comprised an extended process of database project building that was very intensive at the beginning of the project and continued to its end. The second phase of processing consisted of a complex process of mapping and structural modelling that is performed in 8 stages, allowing for iterative improvements of model resolution. During the realization of stages 1 to 7, processing was run independently for the Baltic (BB), Podlasie (PB) and Lublin Basins (LB). The workflow included the following stages: (1) unification and digitization of published and on file analogue and digital, structural maps; (2) preliminary reinterpretation, including adjustment to stratigraphy data acquired from archives; (3) adjusting the maps to the primary results of seismic interpretation, mainly from archival data; (4) digitization and gridding of pre-existing palaeothickness maps and updates of them with data from boreholes completed after 2009; the reinterpretation of the palaeothickness maps into contemporary thickness maps; (5) elaboration of the primary structural 3D models for the three basins; (6) increasing of the stratigraphic resolution of models up to the rank of the geological epoch for Ordovician–Silurian strata; (7) conversion of basin-scale structural models into a 2D grid, and their merging into platform-scale surfaces, resulting in 45 structural and thickness maps; finally, they were adjusted to the results of seismic interpretation and sedimentological studies, obtained in the project; and (8) completion of the resulting structural models for each of the basins and for the entire Polish part of the East European Craton in several different versions. In the third phase of processing, parametric models of vitrinite reflectance (Ro) and Total Organic Carbon (TOC) were estimated.
Źródło:
Annales Societatis Geologorum Poloniae; 2019, 89, 4; 405-427
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mapa zagospodarowania wód podziemnych zaliczonych do kopalin
The map of economic use of therapeutic and thermal waters in Poland
Autorzy:
Felter, A.
Socha, M.
Sokołowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2062297.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
wody lecznicze
wody termalne
solanki
zagospodarowanie
kartografia cyfrowa
therapeutic water
thermal water
brines
economic utilization
digital mapping
Opis:
Wzrost zainteresowania ujmowaniem i gospodarczym wykorzystaniem wód podziemnych zaliczonych do kopalin sprawia, że coraz liczniejsze nowe inwestycje pojawiają się zarówno na obszarach wcześniej intensywnie zagospodarowanych (Terma Hotel Spa w Bukowinie Tatrzańskiej, Terma Bania w Białce Tatrzańskiej itp.), jak i w innych regionach kraju (Krasnobród, Gołdap, Inowrocław itp.). Duże zróżnicowanie przestrzenne oraz dynamika wzrostu liczby inwestycji, zdecydowały o przygotowaniu przez Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy cyfrowej mapy zagospodarowania wód podziemnych zaliczonych do kopalin w Polsce. Ma ona charakter informacyjny, służący popularyzacji zagadnień związanych z tymi wodami. Mapa stanowi kartograficzną wizualizację informacji zgromadzonych w bazie danych przestrzennych, dzięki czemu wydawca może ją aktualizować i dostosowywać do wymagań odbiorców.
Growing interest in the recognition and economic use of therapeutic and thermal waters makes appearance of a number of new investments located on an already heavily developed areas, as well as other regions of the country. Large spatial variation and dynamics of new projects’ emergence resulted in the preparation of the digital Map on Economic Use of Therapeutic and Thermal Waters in Poland by the Polish Geological Institute – National Research Institute. Its drawing up was aimed at popularization of information on these kind of waters. Due to preparing based on spatial data stored in the database it can be easily updated and adapted to the customers’ requirements.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2013, 456 Hydrogeologia z. 14/1; 133--138
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kartowanie i modelowanie wgłębne do celów poszukiwań naftowych, podziemnego składowania dwutlenku węgla i geotermii w Polsce : rezultaty, narzędzia i potencjał
Subsurface mapping and modelling for petroleum prospecting, CCS and geothermics in Poland : results, tools and potential
Autorzy:
Papiernik, B.
Powiązania:
https://bibliotekanauki.pl/articles/2075112.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
modele statyczne
cyfrowe odwzorowanie
siatka 2D
siatka 3D
static models
digital mapping
2D grid
3D grid
Opis:
Digital subsurface mapping on a wide scale started in Poland at the beginning of the 1990s. A team of the Department of Fossil Fuels was engaged in this activity from its beginning. In the first stage simple techniques were based on digitalization of archival maps, which gradually were replaced by development of local and regional maps based on 2D grids. In that period the most significant achievements of the team were Geothermal Atlases of the Polish Lowlands. After 2006, 3D grid-based techniques, comprising static structural and parametric models, gradually replaced the 2D grid-based techniques. They were used in completion of the 3D grid-based models lying behind the maps presented in Geothermal Atlases of the western part of the Polish Carpathians, the Carpathian Foredeep and the eastern part of the Polish Carpathians. According to the world trends in the field of petroleum geology, quantitative petroleum resources assessments were carried out using 2D, 2.5 and 3D grid-based generation, migration and expulsion models. At the same time, numerous 3D static models for CCS purposed were developed. At present, our research moves toward better data integration, uncertainty assessment and 4D modelling for petroleum geology (especially unconventional hydrocarbons), geothermal resources and CCS purposes.
Źródło:
Przegląd Geologiczny; 2014, 62, 12; 856--861
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Games and ADHD-ADD: A Systematic Mapping Study
Autorzy:
Contreras-Espinosa, Ruth S.
Serra, Angel
Terrón, Jose Luis
Powiązania:
https://bibliotekanauki.pl/articles/485131.pdf
Data publikacji:
2019
Wydawca:
Univerzita sv. Cyrila a Metoda. Fakulta masmediálnej komunikácie
Tematy:
adolescents
attention deficit disorder
attention deficit hyperactivity disorder digital games
children
literature review
systematic mapping study
Opis:
Attention Deficit Hyperactivity Disorder (ADHD) is a neuro-developmental disorder that starts in childhood and has a persistent pattern of behaviour involving lack of attention and/or hyperactivity-impulsiveness that interferes in social, academic or work processes, or reduces the quality of them. Through activities with games, children and adolescents improve memory, concentration, motor planning and time management skills. According to some studies these may present positive effects for the attention span, executive functions, working memory and other cognitive skills. However, there are few studies that explain their effects. This paper presents a systematic mapping study and underlines the direction taken by the empirical studies undertaken on the use of digital games in treating ADHD and ADD. A total of 12 articles, covering 2005 to 2015, were selected. The research questions behind the study were: RQ1 What particular characteristics have been investigated by researchers?; RQ2 What research methods have been used?; and RQ3 On which game has the study on ADD-ADHD been focused?. There are studies are focused on the risk of addiction, increased attention deficit or behaviour problems and studies evaluating the improvement in executive functions, reduction in hyperactivity and motivation. The research methods used were experimental and exploratory methods. Finally, the digital games are analyzed without distinguishing between the genres and theme of the game.
Źródło:
Acta Ludologica; 2019, 2, 2; 4-26
2585-8599
Pojawia się w:
Acta Ludologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Empirical AI Transformation Research: A Systematic Mapping Study and Future Agenda
Autorzy:
Peretz-Andersson, Einav
Torkar, Richard
Powiązania:
https://bibliotekanauki.pl/articles/2079604.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
AI transformation
digital transformation
organizational change
systematic mapping study
Opis:
Background: Intelligent software is a significant societal change agent. Recent research indicates that organizations must change to reap the full benefits of AI. We refer to this change as AI transformation (AIT). The key challenge is to determine how to change and which are the consequences of increased AI use. Aim: The aim of this study is to aggregate the body of knowledge on AIT research. Method: We perform an systematic mapping study (SMS) and follow Kitchenham’s procedure. We identify 52 studies from Scopus, IEEE, and Science Direct (2010–2020). We use the Mixed-Methods Appraisal Tool (MMAT) to critically assess empirical work. Results Work on AIT is mainly qualitative and originates from various disciplines. We are unable to identify any useful definition of AIT. To our knowledge, this is the first SMS that focuses on empirical AIT research. Only a few empirical studies were found in the sample we identified. Conclusions We define AIT and propose a research agenda. Despite the popularity and attention related to AI and its effects on organizations, our study reveals that a significant amount of publications on the topic lack proper methodology or empirical data.
Źródło:
e-Informatica Software Engineering Journal; 2022, 16, 1; art. no. 220108
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digital Terrain Model Derivatives Analysis with the Aim of Identifying Specific Soil Types in Young Post-Glacial Topography with a Vector Approach
Autorzy:
Radło-Kulisiewicz, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2088179.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
DTM derivatives
soils made of sand
soils made of loam
wet-soils
digital soil mapping
Opis:
This article discusses a study conducted in order to analyse selected Digital Terrain Model (DTM) derivates in  diverse young post-glacial topographic profiles  with the aim of identifying terrain features that could be related to the soils that formed there. The area under investigation is within the reach of the youngest Vistulian Glaciation, in the north-east of Poland. The main goal of the study was to reveal indirect relationships between a lithological soil type and terrain forms, which transpire from DTM derivatives. This can directly help to assign the type of soil in the area to one of the three soil types: a) made of sand, b) made of loam, c) wet-soils. The starting point for the research undertaken was the landscape approach to soil modelling and the article deals with medium scales. Derivatives were analysed using vector data notation, focusing on selected derivative values and their spatial location in relation to one another. The results obtained indicate the possibility of using this approach as an auxiliary approach in soil mapping of areas for which the quality of source materials (such as precipitation geometry) is low. Thus, they can be of assistance in improving the existing soil maps of selected scales. The trend revealed in the obtained results of DTM analysis can be considered as a contribution to realisation of assumptions of a study in digital soil mapping with the use of selected methods of AI.
Źródło:
Polish Journal of Soil Science; 2021, 54, 1; 123-138
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digital mapping as a tool for environmental and social corporate accountability in the extractive sector in Kwale County, Kenya
Autorzy:
Mwakumanya, M. A.
Mwachupa, J.
Powiązania:
https://bibliotekanauki.pl/articles/92144.pdf
Data publikacji:
2018
Wydawca:
Główny Instytut Górnictwa
Tematy:
digital mapping
extractive sector
citizen participation
corporate accountability
digital applications
mapowanie cyfrowe
sektor wydobywczy
udział obywateli
odpowiedzialność korporacyjna
aplikacje cyfrowe
Opis:
Environmental and social injustices in the extractive sector in Kwale County are rampant and there are limited citizen participatory mechanisms to address the injustices to enhance dialogue among stakeholders. Community exclusion from corporate governance has perpetuated environmental and social injustice causing mistrust and conflicts between communities and investors in mining areas. This study aimed to evaluate a digital mapping platform as a tool for community engagement. A participatory study approach was used where selected stakeholders were trained to use the digital mapping platform and then participated in the study. Mobile phone digital applications and Poi mapper data collection and management applications were used to generate and quantitatively analyse stakeholder responses which were instantly transmitted to a computer server. Digital mapping is interactive, elicited effective interactions among stakeholders and supported citizen participation to enforce corporate accountability.
Źródło:
Journal of Sustainable Mining; 2018, 17, 3; 97-104
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digital analysis of geo-referenced concrete Scanning Electron Microscope (SEM) images
Autorzy:
Ahamad, Mohd Sanusi S.
Maizul, Elly Nur Myaisara
Powiązania:
https://bibliotekanauki.pl/articles/1838090.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
scanning electron microscope
geo-referenced imagery
digital image analysis
image mapping
mikroskop skaningowy
cyfrowa analiza obrazu
mapowanie obrazu
Opis:
The microstructural evaluation of complex cementitious materials has been made possible by the microscopic imaging tools such as Scanning Electron Microscope (SEM) and X-Ray Microanalysis. Particularly, the application of concrete SEM imaging and digital image analysis have become common in the analysis and mapping of concrete technology. In this study, six samples of two-dimensional (2D) SEM images were spatially resampled to produce Geo-referenced SEM sample images. Subsequently, they were analyzed and the intensity histogram plot was produced to facilitate visual interpretation. The consecutive digital image analysis performed was the enhancement and noise removal process using two filtering methods i.e. median and adaptive box filter. The filtered resampled images, then undergone the unsupervised K-Means classification process to collectively separate each individual pixel corresponds to the spectral data. By spatial segmentation of K-Means algorithms, the cluster groups generated were carefully reviewed before proceeding to the final analysis. From the resulting data, the mapping of the spatial distribution of k-cluster and the quantification of micro-cracks (voids) were performed. The results of the SEM images (1st - 4th sample) showed a higher percentage of k-cluster data indicating a good correlation with the major elemental composition of EDX analysis, namely Oxide (O), Silicon (Si) and Carbon (C). Meanwhile, the subjective visual assessment of the image (5th and 6th sample) has confirmed the micro-crack developments on the concrete SEM images upon which the crack density was 3.02 % and 1.30 %, respectively.
Źródło:
Civil and Environmental Engineering Reports; 2020, 30, 2; 67-79
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Designation of Flood Risk Zones Using the Geographic Information System Technique and Remote Sensing Data in Wasit, Iraq
Autorzy:
Rasn, Kouther Hasheem
Nsaif, Qutaiba Abdulwahhab
Al-Obaidi, Mudhar A.
John, Yakubu Mandafiya
Powiązania:
https://bibliotekanauki.pl/articles/1838022.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
flood
Geographic Information System
Digital Elevation Model
risk mapping
remote sensing
Opis:
Floods are a great concern for people and infrastructure, and this is an is‑sue which has increased in several regions around the globe in recent years. This study aims to evaluate flood risk areas and create a flood risk map using in‑tegrated remote sensing data and a geographic information system (GIS) in the Wasit governorate – eastern Iraq. Specifically, GIS‑based multi‑criteria analy‑sis (MCA) was used to map flood hazard areas using a four‑criteria layer which is as follows: flow accumulation, slope, rainfall, and elevation. These four layers are standardized and combined using the overlay approach in ArcGIS software and a final map was produced. The study area was divided into five zones based on the results map, namely: very low, low, medium, high, and very high, according to the flood risk area. The resulting map indicates that over 60% of the study area is likely to experience a high and very high level of propensity of flooding. This study could be useful for government planners and decision‑makers to predict potential flooding areas and enhance flood management plans.
Źródło:
Geomatics and Environmental Engineering; 2021, 15, 3; 129-140
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 20

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