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Wyświetlanie 16-30 z 540
Tytuł:
Drought Detection by Application of Remote Sensing Technology and Vegetation Phenology
Autorzy:
Uttaruk, Y.
Laosuwan, T.
Powiązania:
https://bibliotekanauki.pl/articles/125427.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
drought detection
remote sensing
vegetation phenology
Opis:
Drought is a natural phenomenon as it often occurs in the area of Yasothon province, northeastern of Thailand. It causes effects on vegetation condition in the area. Drought information might be useful for local government to prepare for prevention and mitigation plan in the future. For this reason, the primary objective of the research was to conduct the examination of this province to find severe drought years. Firstly, the researcher needed to find Normalized Differences Vegetation Index (NDVI) and Vegetation Condition Index (VCI) by analyzing monthly Landsat data acquired at different periods of time from January to December 2014, 2015, and 2016, covering 4,096 km2. Then, the researcher needed to find relationship between VCI and monthly rainfall represented in term of space and time. As results, VCI and its relationship with monthly rainfall were congruent. VCI showed that the drought area was 33.87% or 1,387.32 km2 of studied area in 2014, 16.24% or 665.19 km2 of studied area in 2015 and 27.95% or 1,144.83 km2 of studied area in 2016. Therefore, the most and the least severe drought years were 2014, 2016, and 2015 respectively.
Źródło:
Journal of Ecological Engineering; 2017, 18, 6; 115-121
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mapping of mosquito (Culicidae) breeding sites using predictive geographic information methods
Autorzy:
Szabo, S.
Kenyeres, Z.
Bauer, N.
Gosztonyi, G.
Saringer-Kenyeres, T.
Powiązania:
https://bibliotekanauki.pl/articles/87816.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Geograficzne
Tematy:
mosquito
Culicidae
GIS
remote sensing
prediction
Opis:
Application of remote sensing and other GIS methods in the subject of mapping mosquito breeding sites has not been premised accordingly. Despite the facts that the duration of field surveys would be shortened and the effectiveness of action plans would be higher with the supportance of computer modelling techniques. This work aimed to evaluate the applicability of digital elevation models and aerial photographs in the prediction of mosquito breeding sites. Relief analysis was carried out seeking depressions based on elevation models created with TIN and kriging interpolation methods. Spectral analysis was performed on aerial photographs to identify the patches of higher water content or moisture. The results show that terrain analysis can not give acceptable results due to its resolution and accuracy. Spectral analysis of normal (visible range) photographs can be a useful tool in predicting of breeding sites. On grasslands the verificitaion revealed 91% correct results.
Źródło:
Prace Komisji Krajobrazu Kulturowego; 2008, 8; 255-270
1896-1460
2391-5293
Pojawia się w:
Prace Komisji Krajobrazu Kulturowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polevojj spektral'nyjj apparatno-programmnyjj kompleks dlja podsputnikovojj validacii distancionnogo issledovanija rastitel'nosti
Field spectral vehicle-program complex for subsatellite validation research of vegetation controlled from distance
Autorzy:
Donec, V.
Kochubejj, S.
Jacenko, V.
Brovarec, A.
Kazancev, T.
Brovchenko, V.
Powiązania:
https://bibliotekanauki.pl/articles/76661.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
remote sensing
validation
spectrometer
technical characteristics
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 3
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Colloidal crystal cladded microfiber for refractive index sensing
Autorzy:
Yan, H. T.
Zhao, X Y
Zhang, Ch.
Zhen, Z Q
Li, Q Z
Cao, J X
Xia, L X
Powiązania:
https://bibliotekanauki.pl/articles/174902.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
microfibers
colloidal crystals
refractive index sensing
Opis:
We investigate the evanescent field of a microfiber wrapped by colloidal crystals. The microfiber has the diameter of about 1 μm that is drawn from a single-mode fiber with an alcohol lamp. The colloidal spheres are further attached to the microfiber through thermal evaporation, then they self-assemble to crystal-like structures. The 400 nm, 590 nm, and 710 nm-diameter SiO2 colloidal spheres are used, respectively. The spectral responses are studied theoretically and experimentally, and the results agree with each other. It is revealed that the evanescent field of a microfiber could be modulated by the photonic band-gap of colloidal crystals. This characteristic is very useful in refractive index sensing for liquids.
Źródło:
Optica Applicata; 2014, 44, 2; 309-315
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remote sensing using unmanned aerial vehicles for tourist-recreation lake evaluation and development
Autorzy:
Borkowski, Grzegorz
Młynarczyk, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1051018.pdf
Data publikacji:
2019-03-31
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
remote sensing
drone
lake
tourism
recreation
Opis:
This article concerns the use of remote sensing methods to assess the potential of tourism and recreation of lakes by using unmanned aerial vehicles as a tool that offers new measurement possibilities in such difficult areas to research as river and lake systems. For the purpose of the study, air surveys over three lakes used for tourism and recreation purposes were planned and carried out. These were the following lakes: Swarzędzkie, Wolsztyńskie and Zbąszyńskie located in western Poland. The photos were taken with a RGB and a multispectral cameras. On the basis of calculated orthophotomaps and digital surface models, anthropogenic and natural values were assessed. The examples of the research show the versatile possibilities of using drones dependent on the type sensor used. Remote sensing performed from the deck of an unmanned aircraft is widely used in the study of lakes and is an alternative to existing land and water research methods.
Źródło:
Quaestiones Geographicae; 2019, 38, 1; 5-14
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survey of housing characteristics using drones: An experiment in the Alto das Pombas slum, Salvador de Bahia/Brazil
Autorzy:
Gomes, Joice Genaro
Pedrassoli, Julio Cesar
Powiązania:
https://bibliotekanauki.pl/articles/2054997.pdf
Data publikacji:
2021-09-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
slum upgrading
housing
drone
remote sensing
Opis:
Since the approval of the Brazilian Federal Technical Assistance Law, whose objective is to guarantee adequate technical assistance to the residents of poor areas to improve their homes, several municipalities have implemented programs, not always successful, to improve housing in slums. Aiming to subsidize these programs implementation workflow, the present paper analyses use of drones as a tool to gather information about the physical characteristics slum households in Salvador de Bahia city, Brazil. As an experiment we flight over a single census sector within the Alto das Pombas slum, and after image processing we extracted and organized the collected data, extracting the possible information that could be applied to identify and quantify the most precarious houses that could be prioritized from a health improvement perspective. We conclude that many of the necessary data needed, on the urbanistic scale in Brazilian slums, can benefit from drone photogrammetry at low cost and fast execution.
Źródło:
Quaestiones Geographicae; 2021, 40, 3; 169-182
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the application of compressive sampling techniques to high throughput data in computational genomics
Autorzy:
Hernández-Lemus, H.
Powiązania:
https://bibliotekanauki.pl/articles/375726.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
compressive sampling
compressed sensing
computational genomics
Opis:
With the advent of high throughput experiments in genomics and proteomics, the researcher in computational data analysis is faced with new challenges, both with regards to the computational capacities and also in the probabilistic/statistical methodology fields; in order to handle such massive amounts of data in a systematic coherent way. In this paper we describe the basic aspects of the mathematical theory and the computational implications of a recently developed technique called Compressive Sampling, as well as some possible applications within the scope of Computational Genomics, and Computational Biology in general. The central idea behind this work is that most of the information sampled from the experiments turns out to be discarded (for being non-useful) in the final stages of biological analysis, hence it would be better if we could find an algorithm to remove selectively such information in order to get rid of the computational burden associated with processing and analyzing such huge amounts of data. Here we show that a possible algorithm for doing so it is precisely Compressive Sampling. As a working example, we will consider the data-analysis of whole-genome microarray gene expression for 1191 individuals within a breast cancer project.
Źródło:
Theoretical and Applied Informatics; 2011, 23, 3-4; 177-192
1896-5334
Pojawia się w:
Theoretical and Applied Informatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Department of Geoinformatics and Applied Computer Science
Autorzy:
Chuchro, M.
Leśniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/184448.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
remote sensing
numerical modeling
geodynamic phenomena
Źródło:
Geology, Geophysics and Environment; 2016, 42, 2; 249-251
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using LIDAR topography data for determination of morphology and terrace levels of the River Ogre Valley in Middle Latvia Lowland
Autorzy:
Ivanovs, J.
Krievans, M.
Powiązania:
https://bibliotekanauki.pl/articles/184792.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
geodetic technique
remote sensing technique
geomorphology
Opis:
Development of the geodetic and remote sensing techniques in the last decade makes it possible to carry out detailed geomorphological studies and acquire a high quality geospatially accurate data. One of the latest technologies available for collecting topography data is Light Detection and Ranging (LiDAR) which uses fast-firing laser to measure distances from small aircraft to the surface of the earth (Bowen et al. 2002). The study area occupies the Middle Latvia lowland. Previous studies of the River Ogre valley has been made in 1970s (Eberkhard 1972). Recent studies have been carried to supplement information of the distribution of river terraces. Riverbed of the River Ogre valley in Middle Latvia lowland is mostly straight or meandering, with individual branched stages. Valley width mostly ranging from 250 m to 500 m, while in some stages width is only 100 m, while in others reaches up to 1400 m. For this study, classified LiDAR data in ASCII format have been acquired from Latvian Geospatial Information Agency. Digital elevation model (DEM) with raster cell size 1×1 m has been made using Global Mapper v15software. DEMs with raster cell size 0.5×0.5 m and 2×2 m have been also made, however DEM with raster cell size 1×1 m was assessed as optimal, because the amount of data and information processing time, as well as terrain data quality is sufficient to achieve the objective. Such a choice of raster cell size is also based on other studies (Wheaton et al. 2010, Brasington et al. 2012). Longitudinal profile of the River Ogre has been made using DEM and is based on more than 400 valley cross profiles. The longitudinal profile consists of all of detected fragments of terraces, floodplain and elevation of valley margins.To ensure that the DEM is accurate, field observations were carried out and several terraces and shorelines of Quaternary palaeolakes were detected. For example, Zemgale palaeolake shoreline associated with River Ogre valley Ranka spectrum IV terrace, which is visible in the nature and clearly traced on elevation model. The obtained results show that six different terrace levels of Ranka spectrum were detected. I, II, and III terraces are related to levels of the River Daugava terraces, IV terrace is related to Zemgale paleolake but V and VI terrace is linked to various water levels of Daudzeva paleolake.
Źródło:
Geology, Geophysics and Environment; 2016, 42, 1; 76
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie fotogrametrii i teledetekcji do zasilania Kociewskiego Systemu Informacji Przestrzennej
Autorzy:
Bielecka, E.
Powiązania:
https://bibliotekanauki.pl/articles/131264.pdf
Data publikacji:
1998
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
fotogrametria
teledetekcja
region
photogrammetry
remote sensing
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 1998, 8; 23-1-23-7
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie danych teledetekcyjnych oraz systemów informacji geograficznej (GIS) w geofizyce poszukiwawczej
Application of remote sensing data and geographical information systems (GIS) in exploration geophysics
Autorzy:
Burdziej, J.
Powiązania:
https://bibliotekanauki.pl/articles/132323.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Geograficzne
Tematy:
geofizyka
teledetekcja
GIS
geophysics
remote sensing
Źródło:
Teledetekcja Środowiska; 2008, 39; 124-129
1644-6380
Pojawia się w:
Teledetekcja Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic determination of car movement parameters based on image detection
Autorzy:
Marchel, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/320721.pdf
Data publikacji:
2016
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
remote sensing
autonomy
photo-based measurement
Opis:
This article presents alternative way of distance measurement to the preceding vehicle. Investigations were conducted for the purpose of assessing the possibility of using automatic determination of a car plate size in a photograph picture, and basing on that com-puting range to a vehicle. The first part describes the research methodology relating to angular measurements made with a still camera, The second part includes the method employed to automatically detect area occupied by a registration plate in a picture of a vehicle. The final part contains the mechanism of calculating distance to a car and the results of the investigation which justify using described method as a tool for range measurement.
W artykule przedstawiono alternatywny sposób pozyskiwania odległości do poprzedzającego pojazdu. Przeprowadzono badania mające na celu ocenę możliwości automatycznego wyznaczania rozmiaru rejestracji samochodowej na zdjęciu fotograficznym i na tej podstawie pomiaru odległości do pojazdu. W pierwszej części opisano metodę badań związaną z oceną dokładnościową pomiarów kąta i wyznaczania odległości wykonanych aparatem fotograficznym. W części drugiej przedstawiono sposób automatycznej detekcji obszarów zajmowanych przez rejestrację samochodową na zdjęciu pojazdu. Ostatnia cześć zawiera zasadę wyznaczania odległości do pojazdu oraz wyniki pomiarów z przeprowadzonych badań, potwierdzających zasadność stosowania opracowanego sposobu jako narzędzia do pomiarów odległości na podstawie elementów poddawanych automatycznej teledetekcji.
Źródło:
Annual of Navigation; 2016, 23; 199-208
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the BAI index for the classification of the burned area in ground measurements
Autorzy:
Szajewska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/973062.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
BAI
burned area classification
remote sensing
wildfire
Opis:
Quick determination of the area of the burned forest or field caused by the fire is important when estimating losses, monitoring the rebirth of vegetation on the site of fire and planning strategies for forest reconstruction. In order to provide quick information about the area burned by large fires, the BAI index (Burn Area index) is used. This index is obtained using optical methods of satellite remote sensing. In Poland, most fires are the fires of soil cover, the area of which does not exceed 1 ha. In such cases, the use of satellite technology is not applicable due to a number of limitations that are discussed in the text. The article presents the possibility of using the BAI index from a small height. Since the BAI index was originally used for satellite measurements, the article discusses the differences in ground measurements. Experimental research has been described and results from controlled firing have been presented.
Źródło:
Measurement Automation Monitoring; 2019, 65, 2; 37-40
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biofilm and Quorum Sensing in Archaea
Autorzy:
Pawlikowska-Warych, Małgorzata
Tokarz-Deptuła, Beata
Czupryńska, Paulina
Deptuła, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/1386313.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
Archaea
biofilm
environment
quorum sensing
Archea
środowisko
Opis:
In the article, we presented a brief description of the Archaea, considering their structure, physiology and systematics. Based on the analysis of the literature, we bring closer the mechanism of biofilm formation, including extracellular polymeric substances as well as cellular organelles, such as archaella, pili and ‘hami’. The method of forming a biofilm depends on the type of Archaea and the environment in which it naturally lives. We are also introducing the phenomenon of quorum-sensing, as a mechanism of communication of Archaea in the environment. This phenomenon corresponds to similar molecules as bacteria, namely acylated homoserines lactones, QS peptides, autoinducer-2 and -3 and others. In the case of biofilms and the occurrence of the phenomenon of quorum sensing, it can be concluded that these phenomena are very important for the life of Archaea. The phenomena described seem to be conservative, because both in Archaea and Bacteria are regulated by the same mechanisms.
W artykule przedstawiamy opis Archaea, z uwzględnieniem ich budowy, fizjologii i systema- tyki. Na podstawie piśmiennictwa przybliżamy mechanizm tworzenia biofilmu wraz z poza-komórkowymi substancjami polimerowymi, a także typowe tylko dla archeonów organelle komórkowe, takie jak archaella, pili i „hami”. Metoda tworzenia biofilmu zależy od rodzaju Archaea i środowiska, w którym naturalnie żyje. Przybliżamy również zjawisko quorum--sensing, jako mechanizm komunikacji Archaea w środowisku. Za zjawisko to odpowiadają cząsteczki chemiczne podobne do tych u bakterii, a mianowicie acylowany lakton homoseryny, peptyd QS, autoinduktor-2 i -3 oraz inne. Opisywane zjawiska, zarówno tworzenie biofilmu jak i quorum-sensing są istotne dla życia archeonów. Opisane zjawiska wydają się konserwatywne, ponieważ zarówno u archeonów, jak i bakterii są regulowane przez te same mechanizmy.
Źródło:
Acta Biologica; 2019, 26; 35-44
2450-8330
2353-3013
Pojawia się w:
Acta Biologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recognition of the numbers in the Polish language
Autorzy:
Plichta, A.
Gąciarz, T.
Krzywdziński, T.
Powiązania:
https://bibliotekanauki.pl/articles/308844.pdf
Data publikacji:
2013
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Automatic Speech Recognition
compressed sensing
Sparse Classification
Opis:
Automatic Speech Recognition is one of the hottest research and application problems in today’s ICT technologies. Huge progress in the development of the intelligent mobile systems needs an implementation of the new services, where users can communicate with devices by sending audio commands. Those systems must be additionally integrated with the highly distributed infrastructures such as computational and mobile clouds, Wireless Sensor Networks (WSNs), and many others. This paper presents the recent research results for the recognition of the separate words and words in short contexts (limited to the numbers) articulated in the Polish language. Compressed Sensing Theory (CST) is applied for the first time as a methodology of speech recognition. The effectiveness of the proposed methodology is justified in numerical tests for both separate words and short sentences.
Źródło:
Journal of Telecommunications and Information Technology; 2013, 4; 70-78
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 16-30 z 540

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