Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "geographic information" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 18
Tytuł:
Zastosowanie systemów informacji przestrzennej w rolnictwie
Using spatial information systems in agriculture
Autorzy:
Bobola, G.
Sztampke, M.
Powiązania:
https://bibliotekanauki.pl/articles/289959.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
Geographic Information System
GIS
system informacji przestrzennej
SIP
rolnictwo
metadane
geographic information system (GIS)
Spatial Information System
agriculture
metadata
Opis:
Praca podejmuje zagadnienia związane z możliwościami, jakie daje wykorzystanie systemów informacji przestrzennej (z ang. GIS - Geographic Information Systems) w rolnictwie, zarówno w ujęciu mikro, jak i makro gospodarczym. Połączenie informacji dotyczących szeroko rozumianej produkcji rolnej z konkretną sytuacją przestrzenną daje praktycznie nieograniczone możliwości analityczne, służące optymalizacji cyklu wytwórczego, łącznie z etapem dystrybucji płodów rolnych. Dzięki temu otrzymujemy narzędzie wpływające na poprawę jakości i efektywności pracy, a co za tym idzie maksymalizację dochodów. Dodatkowo autorzy pracy zwracają uwagę na uniwersalność metod stosowanych w ramach rozwiązań GIS, dzięki czemu mogą z niej korzystać zarówno organy centralne, odpowiadające za realizację polityki rolnej Państwa, jak i indywidualni producenci rolni.
The paper takes up issues related to possibilities resulting from the use of spatial information systems (GIS - Geographic Information Systems) in agriculture, both from micro- and macroeconomic perspective. Linking of information concerning widely understood agricultural production with specific spatial situation gives practically unlimited analytical capabilities, used to optimize manufacturing cycle, including farm produce distribution stage. Owing to this, we obtain a tool that improves quality and efficiency of work, and consequently guarantees income maximisation. Additionally, the authors of this paper draw attention to versatility of methods employed as part of GIS solutions. This makes them useful both for central authorities responsible for implementation of the State agricultural policy, and individual agricultural manufacturers.
Źródło:
Inżynieria Rolnicza; 2008, R. 12, nr 11(109), 11(109); 7-15
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GIS Enabled Internet of Things (IoT) Applications: An Overview
Autorzy:
Priya, R. Vishnu
Sivaranjani, S.
Sivakumari, S.
Powiązania:
https://bibliotekanauki.pl/articles/1193557.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Geographic Information System
Internet of Things
Mapping
Sensor
Opis:
Internet of Things (IOT) is a recent trend in communication field that makes internet as a universal thing. It makes all the objects in the world to interconnect with one another and with other devices to attain certain objective. Each object will be equipped with sensors, micro-controllers and receivers for digital communication. Geographic Information System (GIS) is a computer system that deals with geographical data. GIS has an ability to gather, store, examine and manage spatial data and allow users to manage data in maps. IoT and GIS are coupled together to provide a better understanding of geographical data and patterns. This tie-up helps in mapping IoT in an interactive way. This article describes the overview of the integration of GIS enabled IOT applications.
Źródło:
World Scientific News; 2016, 41; 128-134
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Realization of spatial database for cataloguing road network of the Raciechowice commune
Autorzy:
Sikora, J.
Powiązania:
https://bibliotekanauki.pl/articles/62194.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
spatial database
Raciechowice commune
road network
geographic database
Geographic Information System
technical parameter
Opis:
In the 21st century, at constant economic and industrial development, the efficient and fast management of technical infrastructure is a key element. Its quality and technical condition considerably influence rural development, possibilities to acquire capital, create new jobs, etc. One of the key issues is the road infrastructure, i.e., network of commune roads, and its condition, while the possibility of management and promptness of decision making determine and are of key importance for planning further development of the commune.In order to manage the road network efficiently and fast, the commune needs all available relevant information. Data describing road technical parameters are the spatial data. Accumulation of the data in geographical database gives a general spatial picture of the commune road network. All data describing roads are recorded in so called road books. The obligation is imposed on the communes by the Minister of Infrastructure Regulation in the method of numbering and registration of public roads [Journal of Laws, No. 67, Items 582 and 583 of 25 April, 2005].The main objective of the presented paper was the realization of a geographical database of the parameters of road network for the Raciechowice Commune Authorities using GPS receiver and the MapSource and ArcView specialist computer packages. For this purpose geocoding of road sections and their spatial inventory in the Raciechowice commune was made by means of a GPS device. The results of measurements obtained by means of GPS were then read immediately to MapSource. The data obtained in this way allowed to create a database in which technical parameters of individual sections of the Raciechowice commune roads were recorded. The ArcView software was used for management of the spatial database and visualization of road technical parameters in form of maps and diagram maps.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2011, 12
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
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
Tytuł:
GIS-integrated spatial analysis models for imaging geomorphology of Mroga and Mrożyca interfluvial area (Central Poland)
Autorzy:
Majecka, Aleksandra
Dmochowska-Dudek, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/2036998.pdf
Data publikacji:
2021-12-23
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
Geographic Information System
land relief modelling
Mroga and Mrożyca
Łódź Plateau
Opis:
GIS data processing techniques are currently being used to revise many ideas in the field of geomorphology and related scienc-es. The paper presents the characteristics of the landform relief of the Mroga and Mrożyca interfluvial area (on the northern margin zone of the Łódź Plateau) based on the results of GIS spatial analysis models. These are techniques that have not been used so far for such a detailed fragment of the Łódź Plateau. The aim of this paper was to show the possibility of detailing topographic and geomorphological analysis and re-imagining the features of the Łódź Plateau relief on the example of a case study of the Mroga and Mrożyca interfluvial area. In this case, the use of GIS modelling confirmed the main features of the strongly transformed relief of the Mroga and Mrożyca interfluvial area, which is a result of overlapping elements of relief formed during the Warta stadial of the Odra Glaciation and further, during periods of the Vistulian and Holocene morphogenesis.
Źródło:
Acta Geographica Lodziensia; 2021, 111; 189-201
0065-1249
Pojawia się w:
Acta Geographica Lodziensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potencjał zastosowania systemów GIS w zarządzaniu łańcuchem dostaw: analiza obszarów wykorzystania
Autorzy:
Bryła, Natalia
Borowiec, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/30097902.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Gdański. Wydział Ekonomiczny
Tematy:
łańcuch dostaw
Systemy Informacji Geograficznej
ArcGIS
supply chain
Geographic Information System
Opis:
W pracy przedstawiono możliwości wykorzystania systemów GIS (Geographic Information System) w celu ułatwienia zarządzaniem łańcuchem dostaw. Autorzy zwracają uwagę na trudności z kontrolowaniem i optymalizacją coraz bardziej skomplikowanych procesów logistycznych. Opisano historię powstania i rozwoju systemów oraz dwa rozszerzenia oprogramowania ArcGIS, które mogą być użyteczne w procesie planowania i optymalizacji logistycznej. Zaprezentowano cel zastosowania rozszerzeń ArcGIS Network Analyst oraz Spatial Analyst, które pozwalają, między innymi na optymalizację tras dostaw, uwzględniając czynniki takie jak czas podróży, ukształtowanie terenu, koszty transportu oraz przeprowadzanie analiz przestrzennych, w celu zidentyfikowania najlepszych miejsc do zlokalizowania magazynów i centrów dystrybucji. Wykorzystując dostępną literaturę oraz informacje udostępnione przez firmę Esri Polska, opisano najważniejsze zagadnienia związane z łańcuchem dostaw oraz obszarem działania systemów. Głównym spostrzeżeniem jest szerokie pole zastosowań tych systemów, co pozwala na skorzystanie z nich przez wiele odrębnych od siebie branży. Jednakże, aby w pełni wykorzystać potencjał systemów GIS, konieczne jest odpowiednie zaprojektowanie systemu oraz zapewnienie odpowiedniego szkolenia dla pracowników.
The paper presents the posibilities of using GIS (Geographic Information System) in order to improve effieciency in the supply chain. The authors draw attention to the difficulties of controling and optimazing increasingly complex ligistics processes. The history of the creation and development of systems is describe, as well as two extentions of ArcGIS software, which can be useful in the process of planning and optimazing Logistics. The aim of using the ArcGIS Network Analyst and Spatial Analyst extentions is presented, which allow, among other things, for the optimization of delivery routes, taking into account factors such as travel time, terrain, transport costs and identyfing the best locations for warehouses and distribution centres. Using available literature and information provided by Esri Polska, the most important issues related to the supply chain and the scope of the systems are described. The main observation is the wide range of applications of these systems, which allows many separete industries to benefit from tchem. However, to fully utilize the potntial of GIS systems, it is necessary to design the system properly and provide appropriate traning for employees.
Źródło:
Zeszyty Studenckie Wydziału Ekonomicznego „Nasze Studia”; 2023, 13; 61-68
1731-6707
Pojawia się w:
Zeszyty Studenckie Wydziału Ekonomicznego „Nasze Studia”
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The study of methods for correcting global Digital Terrain Models using remote sensing data
Autorzy:
Kolb, I.
Lutcyschyn, M.
Panek, M.
Powiązania:
https://bibliotekanauki.pl/articles/100392.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
digital terrain model (DTM)
Digital Elevation Models (DEM)
shuttle radar topographic mission (SRTM)
satellite images
geographic information system (GIS)
cyfrowy model terenu
Geographic Information System
zdjęcie satelitarne
Opis:
This work describes original methods of improving the quality of Digital Elevation Models (DEM), obtained by means of satellite altimetry data. Shown are subsequent steps of geometric correction of global raster DEM, such as SRTM, SRTM DLR and ASTER GDEM, which are commonly available. According to the authors of this analysis, methods proposed here can be used in geoinformation projects.
Źródło:
Geomatics, Landmanagement and Landscape; 2013, 3; 59-66
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial Technology in Evaluating Accessibility Birth / Death Registration Centers in Ikorodu Local Government Area
Autorzy:
Oloyede-Kosoko, S. O. A.
Amusa, Idowu Adigun
Adetimirin, Oluwafemi Idowu
Aigbedion, Imuwahen Priscilla
Foluke, Adeola Esther
Powiązania:
https://bibliotekanauki.pl/articles/1193001.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Accessibility
Digital Database
Geo-Demographic
Geographic Information System
Ikorodu Local Government Area
Opis:
Evaluating the accessibility of NPC birth and death registration centers in Ikorodu LGA of Lagos state was conceived to manage the citing of birth and death registration centers. Digital database that is consistent and devoid of redundancy that enables data sharing at the end. National Population Commission will be a note among the geo-spatial data information infrastructures in the National geospatial frame. Therefore, the design of a geo-demographic digital database has seriously become more useful and eminent for National Population Commission to establish a programmatic database that will allow for easy update and retrieval. This structure is expected to provide for the implementation of a proper GIS in the National Population Commission nationwide.
Źródło:
World Scientific News; 2016, 31; 24-47
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A GIS and AHP-based approach to determine potential locations of municipal solid waste collection points in rural areas
Autorzy:
Malinowski, Mateusz
Guzdek, Sylwia
Petryk, Agnieszka
Tomaszek, Klaudia
Powiązania:
https://bibliotekanauki.pl/articles/2048640.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
analytical hierarchy process
AHP
Geographic Information System
GIS
rural areas
waste collection
Opis:
Municipal solid waste collection points (MSWCPs) are places where residents of municipalities can leave their waste free of charge. MSWCPs should operate in every municipality in Poland. The Geographic Information System (GIS) and analytical hierarchy process (AHP) were used in conjunction as tools to determine potential locations of MSWCPs. Due to possible social conflicts related to the location of MSWCPs, three variants of buffer zones for a residential area were adopted. As a result of the spatial analysis carried out using the GIS software, 247 potential locations were identified in variant no. 1 (which accounted for 7.1% of commune area), 167 for variant no. 2 (6.3% of commune area), and 88 for variant no. 3 (3.8% of commune area). The most favourable locations for MSWCPs were determined using the AHP method with additional criteria for which weights were calculated as follows: the area of a designated plot (0.045), actual designation of a plot in the local spatial development plan (0.397), distance from the centre of the village (0.096) and the commune (0.231), and population density of a village (0.231). The highest weights (over 50%) in the AHP analysis were obtained for 12 locations in variant no. 3, two of which had an area over 3 ha. The adopted methodology enabled to identify quasi-optimal solutions for MSWCP locations in the analysed rural commune. This research has the potential to influence future waste management policies by assisting stakeholders In the MSWCP location.
Źródło:
Journal of Water and Land Development; 2021, 51; 94-101
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial distribution analysis of ship accidents in the Çanakkale Strait
Autorzy:
Bayazit, Ozan
Toz, Ali C.
Buber, Muge
Powiązania:
https://bibliotekanauki.pl/articles/906090.pdf
Data publikacji:
2020
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
Çanakkale Strait
Geographic Information System
marine accident
spatial analysis
risk
Point Density Analysis
Opis:
This study used a spatial distribution analysis to identify the risky areas in the Çanakkale Strait – one of the narrowest waterways with high marine traffic – in terms of ship accidents. To accomplish this, a point density analysis, as part of the geographic information systems (GIS) methodology, was used to create accident density distributions and thematic maps. A total of 162 marine accidents in the Çanakkale Strait between 2007 and 2018 were taken into account. Detailed technical data of accidents were obtained from accident reports provided by the Turkish Maritime Search and Rescue Coordination Center (TMSRCC). The results showed that, among the 162 cases, bulk carriers have the highest accident rate, and most accidents at the Nara Turn were caused by engine failure. In addition, accidents due to navigational failure occurred in every region of the strait. Remarkably, factors directly and indirectly related to human error were still the determining factors in marine accidents. As a result, the risk of marine accidents was higher in the narrow portions of the waterway, and navigation was difficult, especially in areas such as the Nara Turn Point. In future research, it is recommended to consider a wider period of activities using different methods to provide more comprehensive results.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 62 (134); 9-17
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deposition of organic matter and particulate nitrogen and phosphorus at the North Sea - Baltic Sea transition - a GIS study
Autorzy:
Jansen, D.L.
Lundqvist, D.P.
Christiansen, C.
Lund-Hansen, L.C.
Balstrom, T.
Leipe, T.
Powiązania:
https://bibliotekanauki.pl/articles/48457.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
organic matter
nutrient
deposition
nitrogen
Baltic Sea
sediment
phosphorus
North Sea
Geographic Information System
Opis:
A GIS (Geographical Information System) based study on deposition in the North Sea – Baltic Sea transition area has been carried out. The study is based on (i) a digital bathymetry model, (ii) 93 available 210Pb/137Cs sedimentation rate estimations, (iii) grain-size distributions, organic matter, C, N and P content of 64 top 1 cm sediment samples from the study area, and (iv) GIS-based modelling of resuspension potentials based on wind statistics. With the use of regression statistics on depth, resuspension potential and sediment characteristics, results are extrapolated area-wide from the 64 sampling positions. The area is divided into sediment types and classified as accumulation or erosion/transport bottoms. Model results show good agreement with existing maps of sediment distributions, indicating that the sediment distribution is governed to a large extent by windinduced waves. Correlations of sediment types, their deposition rates and their N and P contents were used to estimate spatial deposition rates. In all, the yearly deposition in the study area amounts to 2.8 million tons of organic matter, 0.14 million tons of total nitrogen, and 0.035 million tons of total phosphorus. Correlations of sediment types and dry bulk densities were used to infer spatial inventories of organic matter and total nitrogen and phosphorus in the top 1 cm of the sediments. A total of 100 million tons of organic matter, 4 million tons of total nitrogen, and 0.019 million tons of total phosphorus are contained in the top 1 cm of the sediments in the study area. In general, the deep parts of the study area with low resuspension potentials act as sinks for the fine-grained sediments and their associated particulate nutrients.
Źródło:
Oceanologia; 2003, 45, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of soil erosion using the GIS-based erosion potential method in the Kebir Rhumel Watershed, Northeast Algeria
Autorzy:
Zeghmar, Amer
Marouf, Nadir
Mokhtari, Elhadj
Powiązania:
https://bibliotekanauki.pl/articles/2073737.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Erosion Potential Method
EPM
Geographic Information System
GIS
Kebir-Rhumel
remote sensing
soil erosion
water erosion
Opis:
Soil erosion is an important factor that should be considered when planning renewable natural resource projects, effects of which can be measured by modelling techniques. Therefore, disintegration models determine soil loss intensity and support soil conservation practices. This study estimates soil loss rates by water erosion using the Erosion Potential Method (EPM) in the Kebir Rhumel Watershed located in Northeast Algeria. The area is north to south sub-humid to semi-arid, receives irregular rainfall, and has steep slopes and low vegetation cover which makes it very vulnerable to erosion. The main factors in the EPM (soil erodibility, soil protection, slope, temperature, and rainfall) were evaluated using the Geographical Information System (GIS) and data provided by remote sensing technologies. The erosion intensity coefficient Z was 0.60, which indicates medium erosion intensity. While the results showed the average annual soil erosion of 17.92 Mg∙ha-1∙y -1, maximum and minimum losses are 190.50 Mg∙ha-1∙y-1 and 0.21 Mg∙ha-1∙y-1, respectively. The EPM model shows satisfactory results compared to some studies done in the basin, where the obtained results can be used for more appropriate management of land and water resources, sustainable planning, and environmental protection.
Źródło:
Journal of Water and Land Development; 2022, 52; 133--144
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The zoning of the erosion intensity and sediment yield using the geographic information systems and remote sensing, with the application of the MPSIAC model (Case study: Syazakh dam basin, Kurdistan)
Autorzy:
Emamgholi, M.
Shahedi, K.
Khaledian, V.
Babaee, K.
Powiązania:
https://bibliotekanauki.pl/articles/10759.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
erosion intensity
sediment yield
remote sensing
application
MPSIAC model
Syazakh basin
Kurdistan region
Geographic Information System
Opis:
The aim of the present research was to estimate erosion and sediment and to formulate a map of the basin's erosion intensity using the satellite data, GIS technique and to compare the hydrometric stations' statistics. Using the Land sat satellite images among the results obtained from these data through (TM, ETM+), coverage index (NDVI) as well as a combination of bands 2, 3 and 4 for determining the type of land use and for assessing the soil texture in terms of regional aerial images tone and in accordance with the physiographic of the basin through sampling the soil texture , the map of the basin's texture was obtained. Assessing the surface and river erosion was also conducted using the aerial images and field visits. Given the data obtained and the model being applied, the special sediment rate in the basin was 5/19 tons per hectare, while the overall sediment rate obtained for the entire basin was estimated 5496533 tons in a year. Meantime, the observed and estimated value in the hydrometric station of Nesare Olya for as much as 553230 tons in a year shows a less than 1 % difference in the entire estimation of the sediments accumulated in the back of the dam while its sediment load rate estimation as much as 5/16 tons per hectare shows a 0/03 difference rate for the station.
Źródło:
International Letters of Natural Sciences; 2014, 04
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using GIS to obtain Celestial fix under the framework of an ECDIS System
Autorzy:
Tsou, M. C.
Powiązania:
https://bibliotekanauki.pl/articles/1841602.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
ECDIS
Geographic Information System
GIS
celestial fix
circle of position
Intercept Method
dead reckoning
two-body fix
astronavigation
Opis:
This study proposes a simple method for obtaining a celestial fix, developed within a Geographic Information System (GIS) under the framework of an ECDIS system. The underlying principle is dependent on the most fundamental theory in celestial navigation; the circle of position (COP) of the celestial bodies is plotted to find the fix. Through the spatial data processing, analysis, and visualization capabilities available in GIS, a celestial fix may be obtained directly from plotting. This eliminates the limitations associated with finding the fix manually using a paper map, but also avoids the cumbersome work and inaccuracy of the traditional Intercept Method (IM) or the complicated, and often obscured, computation involved in numerical methods. The proposed method is simple and accurate, and it applies to problems involving two or more celestial bodies and high-altitude observations. It provides a reference for the development of a celestial positioning module in an ECDIS system, and could also be integrated into an educational program on electronic celestial navigation.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 3; 675-680
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling rainfall runoff for identification of suitable water harvesting sites in Dawe River watershed, Wabe Shebelle River basin, Ethiopia
Autorzy:
Harka, Arus E.
Roba, Negash T.
Kassa, Asfaw K.
Powiązania:
https://bibliotekanauki.pl/articles/1844414.pdf
Data publikacji:
2020
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Geographic Information System
GIS
rainfall runoff
rainwater harvesting
soil and water assessment tool
SWAT
Dawe River watershed
Wabe Shebelle River basin
Opis:
Scarcity of freshwater is one of the major issues which hinders nourishment in large portion of the countries like Ethiopia. The communities in the Dawe River watershed are facing acute water shortage where water harvesting is vital means of survival. The purpose of this study was to identify optimal water harvesting areas by considering socioeconomic and biophysical factors. This was performed through the integration of soil and water assessment tool (SWAT) model, remote sensing (RS) and Geographic Information System (GIS) technique based on multi-criteria evaluation (MCE). The parameters used for the selection of optimal sites for rainwater harvesting were surface runoff, soil texture, land use land cover, slope gradient and stakeholders’ priority. Rainfall data was acquired from the neighbouring weather stations while information about the soil was attained from laboratory analysis using pipette method. Runoff depth was estimated using SWAT model. The statistical performance of the model in estimating the runoff was revealed with coefficient of determination (R2) of 0.81 and Nash–Sutcliffe Efficiency (NSE) of 0.76 for monthly calibration and R2 of 0.79 and NSE of 0.72 for monthly validation periods. The result implied that there's adequate runoff water to be conserved. Combination of hydrological model with GIS and RS was found to be a vital tool in estimating rainfall runoff and mapping suitable water harvest home sites.
Źródło:
Journal of Water and Land Development; 2020, 47; 186-195
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 18

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies