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Tytuł:
Satellite Image Fusion Using a Hybrid Traditional and Deep Learning Method
Autorzy:
Hammad, Mahmoud M.
Mahmoud, Tarek A.
Amein, Ahmed Saleh
Ghoniemy, Tarek S.
Powiązania:
https://bibliotekanauki.pl/articles/27314300.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
deep learning image fusion
remote sensing image fusion
remote sensing optical image
pan-sharpening
remote sensing image
Opis:
Due to growing demand for ground-truth in deep learning-based remote sensing satellite image fusion, numerous approaches have been presented. Of these approaches, Wald’s protocol is the most commonly used. In this paper, a new workflow is proposed consisting of two main parts. The first part targets obtaining the ground-truth images using the results of a pre-designed and well-tested hybrid traditional fusion method. This method combines the Gram–Schmidt and curvelet transform techniques to generate accurate and reliable fusion results. The second part focuses on the training of a proposed deep learning model using rich and informative data provided by the first stage to improve the fusion performance. The demonstrated deep learning model relies on a series of residual dense blocks to enhance network depth and facilitate the effective feature learning process. These blocks are designed to capture both low-level and high-level information, enabling the model to extract intricate details and meaningful features from the input data. The performance evaluation of the proposed model is carried out using seven metrics such as peak-signal-to-noise-ratio and quality without reference. The experimental results demonstrate that the proposed approach outperforms state-of-the-art methods in terms of image quality. It also exhibits the robustness and powerful nature of the proposed approach which has the potential to be applied to many remote sensing applications in agriculture, environmental monitoring, and change detection.
Źródło:
Geomatics and Environmental Engineering; 2023, 17, 5; 145--162
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectra for the product of Gaussian noises
Autorzy:
Kish, L. B.
Mingesz, R.
Gingl, Z.
Granqvist, C.-G.
Powiązania:
https://bibliotekanauki.pl/articles/221180.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fluctuation-enhanced sensing
correlation detectors
indoor and environmental air quality sensing
Opis:
Products of Gaussian noises often emerge as the result of non-linear detection techniques or as parasitic effects, and their proper handling is important in many practical applications, including fluctuation-enhanced sensing, indoor air or environmental quality monitoring, etc. We use Rice's random phase oscillator formalism to calculate the power density spectra variance for the product of two Gaussian band-limited white noises with zero-mean and the same bandwidth W. The ensuing noise spectrum is found to decrease linearly from zero frequency to 2W, and it is zero for frequencies greater than 2W. Analogous calculations performed for the square of a single Gaussian noise confirm earlier results. The spectrum at non-zero frequencies, and the variance of the square of a noise, is amplified by a factor two as a consequence of correlation effects between frequency products. Our analytic results are corroborated by computer simulations.
Źródło:
Metrology and Measurement Systems; 2012, 19, 4; 653-658
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cooperative Spectrum Sensing in Cognitive Radio Networks: A Survey on Machine Learning-based Methods
Autorzy:
Khamayseh, Sundous
Halawani, Alaa
Powiązania:
https://bibliotekanauki.pl/articles/308079.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cognitive radio
cooperative spectrum sensing
IEEE 802.22
machine learning
spectrum sensing
Opis:
The continuous growth of demand experienced by wireless networks creates a spectrum availability challenge. Cognitive radio (CR) is a promising solution capable of overcoming spectrum scarcity. It is an intelligent radio technology that may be programmed and dynamically configured to avoid interference and congestion in cognitive radio networks (CRN). Spectrum sensing (SS) is a cognitive radio life cycle task aiming to detect spectrum holes. A number of innovative approaches are devised to monitor the spectrum and to determine when these holes are present. The purpose of this survey is to investigate some of these schemes which are constructed based on machine learning concepts and principles. In addition, this review aims to present a general classification of these machine learningbased schemes.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 3; 36-46
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geoinformatics - an integrated spatial research tool
Autorzy:
Olędzki, Jan Romuald
Kwiatkowska, Joanna M.
Powiązania:
https://bibliotekanauki.pl/articles/2029427.pdf
Data publikacji:
2004-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
geoinformatics
remote sensing
geography
Opis:
The structure of geoinformatics can be understood in many ways, what can be seen from the more or the less complex schemas published in various articles. Geoinformatics creates new possibilities for the precise analysis of spatial phenomena, such as for following their dynamics or defining the associations existing between their components. The use of remote sensing data in such research, takes to another level those areas of knowledge, in which there nevertheless still is a scarcity of reliable materials. It also enables the current monitoring of those phenomena which can't be investigated and estimated in any other way, as well as the modeling of spatial (geographical) phenomena. Since 1996, many studies have been performed at the Laboratory of Remote Sensing of the Environment at the University of Warsaw, in which remote sensing data were integrated with data obtained by other means.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2004, 11; 323-331
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka zjawiska quorum sensing i jego znaczenie w aspekcie formowania i funkcjonowania biofilmu w inżynierii środowiska, budownictwie, medycynie oraz gospodarstwie domowym
Characteristics of the phenomenon of quorum sensing and its meaning in terms of formation and functioning of biofilm in environmental engineering, civil engineering, medicine and household
Autorzy:
Matejczyk, M.
Suchowierska, M.
Powiązania:
https://bibliotekanauki.pl/articles/402639.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
quorum sensing
biofilm
korozja biologiczna
Opis:
Na podstawie przeglądu literatury dokonano charakterystyki zjawiska quorum sensing, które w znaczeniu dosłownym oznacza poczucie obecności i odgrywa znaczącą rolę w procesie formowania i funkcjonowania biofilmu. Zjawisko to jest specyficznym systemem komunikacji pomiędzy drobnoustrojami z udziałem związków chemicznych, ściśle kontrolowanym przez określone geny w odpowiedzi na liczebność populacji drobnoustrojów. Biofilm odpowiada często za uszkodzenia urządzeń sanitarnych, gospodarstwa domowego, materiałów budowlanych. Poznanie mechanizmów tworzenia i funkcjonowania biofilmu pozwoli na opracowanie skuteczniejszych technologii walki ze skutkami jego szkodliwego oddziaływania w inżynierii środowiska, budownictwie jak również w codziennym życiu człowieka.
In the paper characteristics of phenomenon of quorum sensing on base of current literature was done. Quorum sensing means sense of presence in literal meaning and it plays significant role in process of formation and functioning of biofilm. Quorum sensing is a special kind of communication system between microorganism with participation of chemicals. It is controlled by definite genes in answer on numerical force of population of microorganisms. Biofilm functioning is strictly connected with damages of sanitary equipment, housekeeping, construction materials. Knowledge of mechanism of biofilm creation will allow for elaboration of forceful technology of battle with its result of harmful interaction in environmental engineering, construction as well as in daily life of person.
Źródło:
Budownictwo i Inżynieria Środowiska; 2011, 2, 1; 71-75
2081-3279
Pojawia się w:
Budownictwo i Inżynieria Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of ship motion on acoustic remote sensing
Autorzy:
Tegowski, J.
Zielinski, A.
Powiązania:
https://bibliotekanauki.pl/articles/332057.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
ship motion
acoustic remote sensing
Opis:
Ship motion affects quality of acoustic data collected by various acoustic remote sensing systems used for bottom and fisheries surveying. The angular position of an acoustic beam changes in time from its nominal position vertical to sea surface. This motion affects the acoustic returns from the bottom and other targets by changing their intensity and arrival times. In this paper we illustrate these effects on bottom returns obtained using single beam sonar.
Źródło:
Hydroacoustics; 2003, 6; 205-214
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced technologies in aerial mapping
PAŽANGIOSIOS AEROKARTOGRAFAVIMO TECHNOLOGIJOS
Autorzy:
Ruzgienė, Birutė
Kuklienė, Lina
Kuklys, Indrius
Jankauskienė, Dainora
Powiązania:
https://bibliotekanauki.pl/chapters/2196850.pdf
Data publikacji:
2022
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
aerial mapping
remote sensing
photogrammetry
Opis:
Aerial mapping is one of the most advanced methods to obtain information about the surface of the Earth and other objects using remote sensing technology. The quality of cartographic products and 3D models mainly depends on the success of aerial photography/ scanning mission, qualified guidance of photogrammetric workflow, appropriate realization of aerial mapping requirements.
Źródło:
Future of the city; 227-251
9788367185271
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dual Port Antenna Combining Sensing and Communication Tasks for Cognitive Radio
Autorzy:
Nachouane, H.
Najid, A.
Tribak, A.
Riouch, F.
Powiązania:
https://bibliotekanauki.pl/articles/226370.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cognitive radio
microstrip antenna
UWB
coplanar waveguide
sensing and communication tasks
sensing antenna
Opis:
Dynamic spectrum access has been proposed as the effective solution to overcome the spectrum scarcity issue, supported by cognitive radio technology. Sensing and communication functions are both the most important tasks in cognitive radio systems. In this paper, an antenna system combining sensing and communication tasks is proposed to be integrated into cognitive radio front-ends. The sensing task is performed by means of an ultra-wideband quasi-omnidirectional antenna. Whilst the communication task is ensured by using a narrowband antenna. Both antennas have been designed on the same layer of an FR4 substrate, for manufacturing cost constraint. Therefore, the isolation between them must take into consideration. The measured mutual coupling of less than -18 dB is achieved over the whole impedance bandwidth. The proposed sensing antenna covers a wide range frequency bands ranging from 2 to 5.5 GHz. While the communication antenna operates at 2.8 GHz, and by adding inductors to the antenna, the resonant frequency can be tuned from 2.6 to 2.7 GHz. The whole antenna system was designed, fabricated, and tested. Measurement and simulation results prove the feasibility of the proposed structure for cognitive radio applications.
Źródło:
International Journal of Electronics and Telecommunications; 2016, 62, 2; 121-127
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilisation of IoT and sensing for machine tools
Autorzy:
Fujishima, Makoto
Mori, Masahiko
Narimatsu, Koichiro
Irino, Naruhiro
Powiązania:
https://bibliotekanauki.pl/articles/99978.pdf
Data publikacji:
2019
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
sensing
IoT
machine tools
automation
Opis:
Strong requirements for automation in the production processes using machine tools have been increasing due to lack of high-skilled machining engineers. Automation used to be utilised in mass production, but it is also necessary in medium- to low-volume production recently. Next requirements will be monitoring or sensing functions to make the following possible: prompt service when the machine stops; detection of abnormality before the machine breaks down; and compensation of thermal displacement to ensure machining accuracy. These now need to be performed automatically in place of operators so that abnormality can be detected during machining operation. In this paper core technologies to support automation system will be discussed which are operation monitoring, predictive maintenance, sensing interface and thermal displacement compensation as a sensing application.
Źródło:
Journal of Machine Engineering; 2019, 19, 1; 38-47
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of remote sensing methods in geological mapping
Autorzy:
Graniczny, M.
Powiązania:
https://bibliotekanauki.pl/articles/2065882.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
geological mapping
photogeology
remote sensing
Opis:
Aerial photographs are a source of geological information that may be unobtainable elsewhere. If the fullest use is to be made of this information for the purpose of geological mapping, there must be a planned integration of the photogeological work with the field and laboratory investigations. The appearance of the first satellites for civil purposes on the beginning of the 1970s (such as ERTS – Landsat series), of most land areas of the Earth has provided new opportunity for photogeologists. Many areas can now be studied and mapped geologically for which neither adequate maps nor vertical aerial photograps were available. The advantages of the present satellite systems and examples of their application by specialists of the Polish Geological Institute are presented in this paper. Nowadays, it is practically impossible to imagine performing geological mapping without application of remote sensing data and analysis. Development of new technologies is very fast and new borne techniques are coming like permanent scatter interferometry, laser scanning etc. However, we should always remember, that they are only very useful tools to help geologists in their field mapping art and practise.
Źródło:
Przegląd Geologiczny; 2005, 53, 10/2; 907-912
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Raport na temat stanu teledetekcji w Polsce w latach 2011-2014
The report on the state of remote sensing in Poland in 2011-2014
Autorzy:
Olędzki, J. R.
Powiązania:
https://bibliotekanauki.pl/articles/132235.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Geograficzne
Tematy:
teledetekcja
Polska
remote sensing
Polska
Opis:
The Remote Sensing Section of the Committee on Space Research of the Board of the Polish Academy of Sciences (PAS) prepared a report on the state of remote sensing in Poland in the period 2011-2014. The report discusses issues related to the training of specialists in the field of Remote Sensing in first, second and third cycle programmes of study and also major research programmes implemented by the leading Polish research and academic centres. The report was prepared on the basis of contributions provided by members of the Remote Sensing Section PAS: prof. dr hab. Katarzyna Dąbrowska-Zielińska (IGiK), prof. dr hab. Adam Krężel (University of Gdansk), dr hab. inż. Stanisław Lewiński (CBK PAN), dr Marek Ostrowski, dr Piotr Struzik (IMGW-Kraków), and researchers from higher education institutions: dr hab. inż. Kazimierz Bęcek (Wrocław University of Technology), dr hab. inż. Krzysztof Będkowski, (Warsaw Agricultural University, University of Łódz), prof. dr hab. Kazimierz Furmańczyk (University of Szczecin), prof. dr hab. Jacek Kozak (Jagiellonian University), dr hab. Zenon Kozieł (Nicolaus Copernicus University), dr hab. inż. Katarzyna Osińska--Skotak (Warsaw University of Technology), prof. dr hab. inż. Krystian Pyka (Academy of Mining and Metallurgy in Kraków), mgr inż. Paweł Szymański (Warsaw Agricultural University, University of Łódź), dr inż. Piotr Walczykowski (Military University of Technology), dr hab. inż. Piotr Wężyk (University of Agriculture in Kraków), dr hab. Bogdan Zagajewski (University of Warsaw). Prof. dr hab. Jan R. Olędzki, Chair of the Remote Sensing Section during the 2011-2014 term, member of the Committee on Space Research of the Presidium of the Polish Academy of Sciences, handled the editorial work and provided the necessary additions. According to the findings of the Remote Sensing Section, 34 different research institutions and organisations in Poland tackled remote sensing issues in the years 2011-2014. Among them were renowned universities with established traditions in remote sensing studies and those whose history in that regard is slightly shorter, in addition to research institutions, social organisations and commercial companies specialising in conducting various types of scientific and application research. They are listed in alphabetical order below, together with their addresses and websites. Since not all of the institutions submitted their reports, information on their activities can be obtained directly from their websites. Information about remote sensing activities was obtained from 30% of the institutions and organisations involved in this area of study. It should be noted, however, that these institutions are the most notable in the field in Poland. The submitted information reveals that at least 215 people were directly involved in remote sensing activities or collaborated with remote sensing teams. They implemented 128 research projects and published a total of 404 studies at home and abroad. In addition, 154 graduates were awarded MA degrees, 17 - PhD degrees; 6 were awarded postdoctoral degrees (doktor habilitowany) and one was awarded the title of professor. Tables 1 and 2 below show a summary of achievements of academic and research institutions. In the next part, the report presents detailed data on the institutions from which information was obtained: universities, research establishments, business organisations and NGOs.
Źródło:
Teledetekcja Środowiska; 2015, 53; 113-174
1644-6380
Pojawia się w:
Teledetekcja Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Semi-PROPELLER Compressed Sensing Image Reconstruction with Enhanced Resolution in MRI
Autorzy:
Malczewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/226988.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
MRI
super-resolution
compressed sensing
Opis:
Magnetic Resonance Imaging (MRI) reconstruction algorithm using semi-PROPELLER compressed sensing is presented in this paper. It is exhibited that introduced algorithm for estimating data shifts is feasible when super- resolution is applied. The offered approach utilizes compressively sensed MRI PROPELLER sequences and improves MR images spatial resolution in circumstances when highly undersampled k-space trajectories are applied. Compressed sensing (CS) aims at signal and images reconstructing from significantly fewer measurements than were traditionally thought necessary. It is shown that the presented approach improves MR spatial resolution in cases when Compressed Sensing (CS) sequences are used. The application of CS in medical modalities has the potential for significant scan time reductions, with visible benefits for patients and health care economics. These methods emphasize on maximizing image sparsity on known sparse transform domain and minimizing fidelity. This diagnostic modality struggles with an inherently slow data acquisition process. The use of CS to MRI leads to substantial scan time reductions [7] and visible benefits for patients and economic factors. In this report the objective is to combine Super-Resolution image enhancement algorithm with both PROPELLER sequence and CS framework. The motion estimation algorithm being a part of super resolution reconstruction (SRR) estimates shifts for all blades jointly, utilizing blade-pair correlations that are both strong and more robust to noise.
Źródło:
International Journal of Electronics and Telecommunications; 2015, 61, 2; 211-217
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
QS – systems communication of Gram-negative bacterial cells
Autorzy:
Ziemichód, Alicja
Skotarczak, Bogumiła
Powiązania:
https://bibliotekanauki.pl/articles/1386164.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
interspecies communication
quorum sensing history
quorum sensing in Vibrio and Pseudomonas aeruginosa
synthesis of AI-2 autoinducer
komunikacja międzygatunkowa
historia quorum sensing
quorum sensing u Vibrio i Pseudomonas aeruginosa
synteza autoinduktora AI-2
Opis:
Quorum sensing (QS) is a communication mechanism used by bacteria to recognize cell population density fluctuations and control gene expression, which is a critical role both in intra- and interspecies communication and controls microbe-host interactions. QS is the process in which the bacterial cells detect threshold concentration of signaling molecules in the external environment, and then after having exceeded this allowable threshold, they respond accordingly and modify their behavior by altering the expression of their genes. Regulation of gene expression in response to the density of bacterial cells in a population is a key phenomenon in the mechanism of QS and it is used by both Gram-negative and Gram-positive bacteria. In Gram-negative bacteria LuxR protein plays a key role in QS system as a type of transcription regulators and participates in a variety of biological behaviors with LuxI protein and signal molecules, including those encoding virulence factors and antibiotics biosynthesis, plasmid transfer, bioluminescence, and biofilm formation. New researches which highlight the unusual signaling molecules, novel regulatory components and heterogeneity in the QS system of Gram-negative bacteria are presented in this paper.
Quorum sensing (QS) jest mechanizmem komunikacji używanym przez bakterie do rozpoznawania zmian w zagęszczeniu populacji i kontroli ekspresji genów, który jest ważny zarówno w komunikacji wewnątrz jak i pomiędzy gatunkowej oraz kontroluje interakcje bakteria- -gospodarz. QS jest procesem, w którym komórki bakteryjne wykrywają progową koncentrację cząsteczek sygnałowych w środowisku zewnętrznym, a następnie, po przekroczeniu tego progu, odpowiadają swoiście i modyfikują swoje zachowanie przez zmiany w ekspresji genów. Regulacja ekspresji genów w odpowiedzi na gęstość komórek bakteryjnych w populacji jest kluczowym fenomenem w mechanizmie QS i jest stosowana zarówno przez bakterie Gramujemne, jak i Gram-dodatnie. U bakterii Gram-ujemnych białko LuxR odgrywa kluczową rolę w systemie QS jako rodzaj regulatora transkrypcji oraz wspólnie z białkiem LuxI i cząsteczkami sygnałowymi uczestniczy w różnych procesach biologicznych takich jak kodowanie czynników wirulencji i biosyntezie antybiotyków, w transferze plazmidów, bioluminescencji i formowaniu biofilmu. W pracy zaprezentowano nowe badania, które przybliżają te niezwykłe cząsteczki sygnałowe, nowe komponenty regulatorowe i heterogenność QS-systemu u bakterii Gram-ujemnych.
Źródło:
Acta Biologica; 2017, 24; 39-49
2450-8330
2353-3013
Pojawia się w:
Acta Biologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D camera and lidar utilization for mobile robot navigation
Autorzy:
Stefańczyk, M.
Banachowicz, K.
Walęcki, M.
Winiarski, T.
Powiązania:
https://bibliotekanauki.pl/articles/950794.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
mobile robotics
navigation
RGB-D sensing
Opis:
The article presents a navigation system based on 3D camera and laser scanner capable of detecting a wide range of obstacles in indoor environment. First, existing methods of 3D scene data acquisition are presented. Then the new navigation system gathering data from various sensors (e.g. 3D cameras and laser scanners) is described in a formal way, as well as exemplary applications that verify the approach.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2013, 7, 4; 27-33
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface damage assessment by analysis of electrical resistance changes in graphite-based sensing skin
Autorzy:
Stepnowski, Marek
Janczak, Daniel
Jakubowska, Małgorzata
Pyrzanowski, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2106421.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sensing skin
damage
detection
algorithm
ERT
Opis:
The article presents the method of identifying surface damage by measuring changes in resistance in graphite-based sensing skin. The research focused on analysis of conductivity anomalies caused by surface damage. Sensitivity maps obtained with Finite Element Method (FEM) in conjunction with the analytical damage model were used to build the coating evaluation algorithm. The experiment confirmed the ability of this method to identify a single elliptical-shape damage. Eight electrodes were enough to locate the damage that covered about 0.1‰ of the examined area. The proposed algorithm can prove useful in simple applications for surface condition monitoring. It can be implemented wherever it is possible to apply a thin layer of conductor to a non-conductive surface.
Źródło:
Metrology and Measurement Systems; 2022, 29, 2; 347--360
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Tytuł:
Crop production intensity and haNDVI indicator – amplitude of NDVI related to harvest
Autorzy:
Łopatka, Artur
Koza, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2147933.pdf
Data publikacji:
2020-11-30
Wydawca:
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
Tematy:
remote sensing
NDVI
nitrogen fertilizers
Sentinel
MODIS
Opis:
In response to the growing needs of spatial recognition of the intensity of agricultural crop production, a new haNDVI indicator was developed, that measures the amplitude of the NDVI indicator related to the harvest. The proposed way of calculating haNDVI is to use the minimum and maximum functions for the raster layers set from the growing season. This avoids the need for preliminary classification of crops, including to determine the moment of harvest. It has been shown that the haNDVI indicator calculated on aggregated NDVI layers with a resolution of 1 km is correlated with soil quality indexes, NPK fertilization intensity (r = 0.69) and the share of crops in the total area (r = 0.86) for municipalities. The properties of the haNDVI indicator make it particularly useful for the initial, rapid scanning of environmental quality in terms of the intensity of plant production and indicating the hazards locations associated with the use of fertilizers and plant protection products.
Źródło:
Polish Journal of Agronomy; 2020, 42; 24-33
2081-2787
Pojawia się w:
Polish Journal of Agronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Colorimetric Parameters Modeling of Test Micro-Ecosystems for Lands Pollution Remote Sensing
Autorzy:
Vуsotska, Olena
Greben, Aleksandr
Kalashnikova, Vasilisa
Klochko, Tetiana
Rakhmetullina, Saule
Kotyra, Andrzej
Mamyrbaev, Orken
Iskakova, Aigul
Powiązania:
https://bibliotekanauki.pl/articles/1839122.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
pollution
system dynamics
colorimetric parameters
remote sensing
Opis:
The paper describes a methodology of determining the toxicity sources, using bioassay based on the wildlife objects that change their colorimetric parameters under the influence of toxic factors. The work explores the dynamism of the colorimetric attributes associated with plant pigments. It can be determined by computer processing of the data obtained from digital remote sensing of the lands affected by toxic pollution by means of such relatively low-cost and straightforward methods as digital photography from an aircraft or a drone. The results obtained do not allow direct measurements but rather serve as a basis for the development and characterization of new biomarkers.
Źródło:
Journal of Ecological Engineering; 2021, 22, 2; 161-168
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical investigation of slab waveguide sensor using anisotropic metamaterial
Autorzy:
Taya, S. A.
Powiązania:
https://bibliotekanauki.pl/articles/174457.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
anisotropic waveguides
optical sensing
double negative materials
Opis:
A three-layer slab waveguide with air as a substrate, lossless dielectric as a guiding film, and anisotropic double negative material as a cladding is explored as an optical sensor for refractometry applications. The double negative material is assumed to have a negative electric permittivity and magnetic permeability only along the wave propagation direction. The sensitivity of a guided mode to the variation in the refractive index of air substrate is derived and studied for the first few guided modes. It is found that the sensitivity can be enhanced with decreasing the guided light frequency as well as the film thickness. The sensitivity can reach 100% for some waveguide configurations.
Źródło:
Optica Applicata; 2015, 45, 3; 405-417
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Observed vertical distribution of tropospheric carbon monoxide during 2012 over Iraq
Autorzy:
Abdulfattah, Ibtihaj S.
Rajab, Jasim M.
Al-Salihi, Ali M.
Suliman, Aha
Lim, Hwee S.
Powiązania:
https://bibliotekanauki.pl/articles/118644.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
AIRS
remote sensing
pollution
carbone monoxide
Iraq
Opis:
The atmospheric parameters observations enable to made continental and global scales by remote sensing devices existent in space. One of these instruments is the Atmospheric InfraRed Sounder (AIRS) onboard Aqua satellite. We characterize the vertical distribution of troposphere carbon monoxide (CO) measured by AIRS over IRAQ. This study presents one year data. Results shown standard deviation of monthly troposphere CO for five locations: Baghdad, Basrah, Maysan, Al Fakka, and Mosul, from January to December 2012, was 107.15 ±18.75 ppbv for entire period depend on whether circumstance and topography. The seasonal differences undulate between winter and summer seasons, with higher values CO in the winter than in the summer and autumn seasons. In addition, the rising in troposphere CO values can be measured during year over the manufacturing and crowded urbanized zones. AIRS observations reveal enhanced abundances of CO, with values that can exceed 120 ppbv at approximately 4 km altitude over Baghdad and Mosul. The lower CO amounts observed of approximately 88–90 ppbv at 253 mb (altitude 11 km) during October. Comparisons over Baghdad station in 2012 showed close agreement between the ground CO data and the observed CO from AIRS, and regression result showed high correlation coefficient (R = 0.962). The vertical CO observation by AIRS is providing meaningful information for different altitude layers closer to the troposphere, and the satellite measurements are able to measure the increase of the atmosphere CO concentrations over varied regions.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2020, 29, 2; 184-195
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Desertification detected in the Udhaim River Basin, Iraq. Based on Spectral Indices Derived from Remote Sensing Images
Autorzy:
Mail, Abd Al Salam Mohammed
Powiązania:
https://bibliotekanauki.pl/articles/2108226.pdf
Data publikacji:
2017-10-04
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Desertification
GIS
remote sensing
spectral indices
Iraq
Opis:
In this study, changes in Land Use Land Cover (LULC) have been investigated over the Udhaim River Basin in Iraq by using spectral indices. NDVI, NDBI, NDWI, NDBaI, and CI represent respectively the vegetation, built-up, water bodies, bare-land, and soil crust of LULC. Two different images were acquired for the analysis, namely a Landsat 5 TM image from 1 July 2007 and a Landsat 8 OLI from 5 June 2015, both representing summer conditions. Results show that the percentages of vegetated land and water body areas have decreased. On the contrary, the percentages of built-up, bare land and soil crust areas have increased. The loss of vegetated areas and water body areas is a signal of land degradation leading to desertification, due to the combined effects of climate conditions, water deficit and human activities. Field observation shows that human activities have a significant impact on land degradation.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2017, 21, 3; 124-131
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring Nitrogen Dioxide (NO2) in Environment of Ukraine based on Satellite Data
Autorzy:
Yelistratova, Lesya
Apostolov, Alexander
Khodorovskyi, Artur
Tymchyshyn, Maksym
Powiązania:
https://bibliotekanauki.pl/articles/27314277.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
remote sensing
nitrogen dioxide
air pollution
Ukraine
Opis:
Air pollution (especially near industrial enterprises that are located mainly in densely populated regions) is one of the most significant problems of modern ecology. The purpose of this research is to study nitrogen dioxide air pollution over Ukraine, which has a negative impact on human health. As part of the research over the territory of Ukraine, the real planar distribution of nitrogen dioxide (NO2) as well as its local emissions (which make the main contribution to this distribution) were revealed using the materials of the remote sensing of the Earth from the AURA satellite. The results were calculated for the multi-year period of 2005 through 2021 and separately for 2022, which characterized the full-scale war in Ukraine and which made it possible to identify priority polluters; namely, industrial enterprises (thermal power plants, heavy metallurgy enterprises, etc.). For 17 years, the average value of NO2 was 160.78 · 102 molecules/mm2; in 2022, its concentration decreased to 126.93·109 molecules/mm2. The war manifested itself due to the shutdown of industrial enterprises, which were (and remain) priority polluters in Ukraine (particularly in large cities).
Źródło:
Geomatics and Environmental Engineering; 2023, 17, 6; 95--110
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of soil characteristics using three bands agri-cultural digital camera
Autorzy:
Glinko, Agnieszka
Kaźmierowski, Cezary
Piekarczyk, Jan
Królewicz, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/15804816.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
remote sensing
soil
spectroscopy
cubist
R Studio
Opis:
Remote sensing techniques based on soil spectral characteristics are the key to future land management; however, they still require field measurement and an agrochemical laboratory for the calibration of the soil property model. Visible and near-infrared diffuse reflectance spectroscopy has proven to be a rapid and effective method. This study aimed to assess the suitability of multispectral data acquired with the agricultural digital camera in determining soil properties. This 3.2-Mpx camera captures images in three spectral bands – green, red and near-infrared. First, the reference data were collected, which consist of 151 samples that were later examined in the laboratory to specify the granulometric composition and to quantify some chemical elements. Second, additional soil properties such as cation exchange capacity, organic carbon and soil pH were measured. Finally, the agricultural digital camera photograph was taken for every soil sample. Reflectance values in three available spectra bands were used to calculate the spectra indices. The relationships between the collected data were calculated using the independent validation regression model such as Cubist and cross-validation model like partial least square in R Studio. Additionally, different types of data normalisation multiplicative scatter correction, standard normal variate, min–max normalisation, conversion into absorbance] were used. The results proved that the agricultural digital camera is suitable for soil property assessment of sand and silt, pH, K, Cu, Pb, Mn, F, cation exchange capacity and organic carbon content. Coefficient of determina-tion varied from 0.563 (for K) to 0.986 (for soil organic carbon). Higher values were obtained with the Cubist regression model than with partial least squares.
Źródło:
Quaestiones Geographicae; 2022, 41, 3; 127-140
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modele stosowane do opisu architektury drzew i możliwości ich praktycznego wykorzystania w leśnictwie
Tree architecture descriptive models with forestry applications
Autorzy:
Kędra, K.
Stereńczak, K.
Gazda, A.
Powiązania:
https://bibliotekanauki.pl/articles/978911.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
forest modelling
forest ecosystems
remote sensing
geometry
Opis:
The qualitative and quantitative descriptive models of tree architecture differ in the degree of complexity and the way of mapping tree structure, and thus, are of varied use in forestry. The qualitative, Hallé−Oldeman models, serve as a framework for analyzing tree architecture and help define the different components of a tree branching system. Among the quantitative models (here: horizontal, three−dimensional or vertical ones) the horizontal representations are the most parsimonious, and proved to be useful for examining the effects of competition process and the light conditions within the forest understory. The three−dimensional representations (Quantitative Structural Models; QSMs) have the widest range of applications as they may be used for deriving both the two−dimensional traits (such as crown length or branch height) and the volumetric traits (such as tree crown volume or wood volume). At the same time they are the most complex ones. The vertical models were used to study the impact of local terrain shape and wind conditions on tree architecture, but the way of deriving such models from the QSMs seems excessively laborious. However, we highlight here also a photogrammetric method, which allows to obtain an analogous model in much simpler way. Both three−dimensional and vertical representations are useful for determining the wood quality features. Three−dimensional models can be used to accurately measure tree woody biomass, while horizontal models can be used for reliable biomass estimations.
Źródło:
Sylwan; 2020, 164, 09; 707-718
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Brief Review of Recent Developments in the Integration of Deep Learning with GIS
Autorzy:
Mohan, Shyama
Giridhar, M.V.S.S
Powiązania:
https://bibliotekanauki.pl/articles/2055781.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
deep learning
GIS
integration
classification
remote sensing
Opis:
The interaction of Deep Learning (DL) methods with Geographical Information System (GIS) provides the opportunity to obtain new insights into environmental processes through the spatial, temporal and spectral resolutions as well as data integration. The two technologies may be connected to form a dynamic system that is incredibly well adapted to the evaluation of environmental conditions through the interrelationships of texture, size, pattern, and process. This perspective has acquired popularity in multiple disciplines. GIS is significantly dependant on processors, particularly for 3D calculations, map rendering, and route calculation whereas DL can process huge amounts of data. DL has received a lot of attention recently as a technology with a plethora of promising results. Furthermore, the growing use of DL methods in a variety of disciplines, including GIS, is evident. This study tries to provide a brief overview of the use of DL methods in GIS. This paper introduces the essential DL concepts relevant to GIS, the majority of which have been published in recent years. This research explores remote sensing applications and technologies in areas such as mapping, hydrological modelling, disaster management, and transportation route planning. Finally, conclusions on contemporary framework methodologies and suggestions for further studies are provided.
Źródło:
Geomatics and Environmental Engineering; 2022, 16, 2; 21--38
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant communities of the Admiralty Bay region (King George Island, South Shetland Islands, Antarctic) I. Jasnorzewski Gardens
Autorzy:
Furmańczyk, Kazimierz
Ochyra, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2057657.pdf
Data publikacji:
1982
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctica
Admiralty Bay
phytosociology
photointerpretation
remote sensing
Źródło:
Polish Polar Research; 1982, 3, 1-2; 25-39
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal Voting Rule and Minimization of Total Error Rate in Cooperative Spectrum Sensing for Cognitive Radio Networks
Autorzy:
Ghosh, Samit Kumar
Trankatwar, Sachin Ravikant
Bachan, P.
Powiązania:
https://bibliotekanauki.pl/articles/1839471.pdf
Data publikacji:
2021
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cognitive radio
energy detection
optimization
spectrum sensing
Opis:
In cognitive radio technology, spectrum sensing is essential for detecting spectrum holes which may be allotted to secondary users. In this paper, an optimal voting rule is used for cooperative spectrum sensing while minimizing the total error rate (TER). The proposed spectrum sensing method is more energy-efficient and may be implemented in practice. It is relied upon in an improved energy detector whose utilization depends on the presence or absence of the primary user. Expressions for false alarm and missed detection probabilities are derived in the paper as well. Overall performance is analyzed both for AWGN and Rayleigh fading channels, in the presence of additive white Gaussian noise (AWGN). The optimum voting rule is applied to the cooperative spectrum sensing process in order to identify the optimum number of sensing nodes and the detection threshold. Finally, an energy-efficient spectrum sensing algorithm is proposed, requiring a lower number of cognitive users for a given error bound.
Źródło:
Journal of Telecommunications and Information Technology; 2021, 1; 43-50
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal Voting Rule and Minimization of Total Error Rate in Cooperative Spectrum Sensing for Cognitive Radio Networks
Autorzy:
Ghosh, Samit Kumar
Trankatwar, Sachin Ravikant
Bachan, P.
Powiązania:
https://bibliotekanauki.pl/articles/1839487.pdf
Data publikacji:
2021
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cognitive radio
energy detection
optimization
spectrum sensing
Opis:
In cognitive radio technology, spectrum sensing is essential for detecting spectrum holes which may be allotted to secondary users. In this paper, an optimal voting rule is used for cooperative spectrum sensing while minimizing the total error rate (TER). The proposed spectrum sensing method is more energy-efficient and may be implemented in practice. It is relied upon in an improved energy detector whose utilization depends on the presence or absence of the primary user. Expressions for false alarm and missed detection probabilities are derived in the paper as well. Overall performance is analyzed both for AWGN and Rayleigh fading channels, in the presence of additive white Gaussian noise (AWGN). The optimum voting rule is applied to the cooperative spectrum sensing process in order to identify the optimum number of sensing nodes and the detection threshold. Finally, an energy-efficient spectrum sensing algorithm is proposed, requiring a lower number of cognitive users for a given error bound.
Źródło:
Journal of Telecommunications and Information Technology; 2021, 1; 43-50
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sekcja Geomatyczna Koła Leśników w projekcie Pomerania - najnowsze technologie geopatyczne w szacowaniu biomasy drzew
Geomatics section academic circle foresters in Pomerania project - the latest technologies in geomatics in tree biomass evaluation
Autorzy:
Wołosz, A.
Powiązania:
https://bibliotekanauki.pl/articles/132351.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Geograficzne
Tematy:
teledetekcja
skaning laserowy
remote sensing
laser scanning
Opis:
Geomatic section at the Faculty of Forestry, Poznan University of Life Sciences organized the scientific forest camp for forestry students (ForseenPOMERANIA Camp). It was organized in the frame of the scientific project „Development of trans-border decision support system for remote and model assessment of forest dendromass in Pomerania Region”. Students actively attended in the measurements of model trees on the experimental plots located in the Drawno Forest Inspectorate. This task was supported by UE funds (INTERREG IV). During the measurements the latest remote sensing technologies and very specifi c equipments were applied. One of the goals of this project are to build the transgenic information system “Biomass” as well as elaborate the cheaper and faster methods of data collection on stand biomass. Thanks to laboratory results and tree measurements it will be able to elaborate models describing the dependencies.
Źródło:
Teledetekcja Środowiska; 2013, 49; 101-105
1644-6380
Pojawia się w:
Teledetekcja Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laboratory testing of velocity sensing in a magnetorheological damper with power generation
Autorzy:
Sapiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/387253.pdf
Data publikacji:
2017
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
MR damper
power generator
voltage
velocity
sensing
Opis:
The study summarises the results of experimental examination of velocity sensing capability in a prototype of a magnetorheological damper with power generation (MRD). The device has two main components: an electromagnetic power generator and an MR damper. The study outlines the structure of the device with the main focus on the generator part, and provides results of tests performed under the idle run. The discussion of demonstrates the potentials of MRD action as a velocity-sign sensor and presents key issues which need to be addressed to enable its real life applications.
Źródło:
Acta Mechanica et Automatica; 2017, 11, 3; 186-189
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teledetekcja jako metoda analizy ruchów masowych
Remote sensing as the method for analysis of mass movements
Autorzy:
Pilecka, E.
Powiązania:
https://bibliotekanauki.pl/articles/394322.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
teledetekcja
ruchy masowe
remote sensing
mass movements
Opis:
W artykule omówione zostały możliwości zastosowania teledetekcji do badania ruchów masowych. Przeprowadzono analizę wykorzystania teledetekcji satelitarnej, lotniczej i naziemnego skanera laserowego do skanowania terenów osuwiskowych. Omówiono zagrożenie ruchami osuwiskowymi na terenie Polski. Przedstawiono przykłady zniszczeń spowodowanych osuwiskami w budynkach i infrastrukturze komunikacyjnej. Szkody takie powstają szczególnie po obfitych opadach deszczu, bowiem woda jest jednym z głównych czynników aktywujących ruch osuwiskowy. W artykule przedstawiono schemat tworzenia się osuwiska i czynniki wpływające na jego uaktywnienie. Porównano zalety i ograniczenia każdego z poziomów teledetekcji: satelitarnej, lotniczej i naziemnej. Do monitorowania powierzchniowego osuwisk wybrano metodę naziemnego skanowania jako najbardziej odpowiednią w zakresie rozdzielczości przestrzennej i czasowej. Obraz otrzymany tą metodą to trójwymiarowy model składający się z milionów pojedynczych punktów. Chmura punktów stanowi pewnego rodzaju dokumentację przestrzenną, do której możemy w każdej chwili wrócić, aby wykonać dodatkowe pomiary, analizy lub odtworzyć stan z dnia wykonania skanu. Ruchy masowe można śledzić na podstawie modelu różnicowego konstruowanego na podstawie dwóch lub więcej przestrzennych modeli.
The paper describes the applicability of remote sensing to the study of mass movements. An analysis of the use of satellite remote sensing, aerospace and terrestrial laser scanner to scan the landslide areas was carried out: Risk of landslide movements on the area of Poland was characterized. The examples of the devastation in buildings and transport infrastructure caused by landslides were presented. Such damage would occur especially after heavy rains, as water is one of the main factors activating mass movements. This paper presents the scheme to create a landslide movement and factors affecting its activation The advantages and limitations of each level remote sensing: satellite, aerospace and terrestrial laser scanner were presented. For monitoring of the landslide surface scanning method was selected as the terrestrial laser scanner for the most appropriate spatial and time resolution. Image by this method was a three-dimensional model consisting of millions of individual points. Cloud of points is a kind of spatial documentation to which we can return at any time to perform additional measurements, analysis, or restore the status of the implementation of the scan. Mass movements can be tracked on the basis of the constructed differential model based on two or more spatial models.
Źródło:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2013, 84; 103-115
2080-0819
Pojawia się w:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection of ethane, methane, formaldehyde and water vapor in the 3.33 μm range
Autorzy:
Winkowski, Mateusz
Stacewicz, Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/2106414.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
infrared spectroscopy
multipass
biomarkers
trace gas sensing
Opis:
We describe construction and investigation results of optical trace gas sensor working in the 3.334-3.337 μm spectral range. Laser spectroscopy was performed with a multipass cell. A setup was elaborated for detection of ethane at the 3.3368035 μm absorption line. Analysis of the gas spectra and the experiment have shown that, beside C2H6, the sensor is suitable for simultaneous detection of methane, formaldehyde and water vapor. Due to nonlinearity of the laser power characteristic we decided to detect the fourth harmonic of signal. Additional laser wavelength modulation was applied for optical interference suppression. In result, the precision of ethane detection of approximately 80 ppt has been achieved for the averaging time of 20 seconds. Long-term stability as well as the measurement linearity have also been positively tested. The system is suitable for detecting potential biomarkers directly in human breath.
Źródło:
Metrology and Measurement Systems; 2022, 29, 2; 271--282
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Fibre Bending on Polarization-Dependent Twist Sensor Based on Tilted Bragg Grating
Autorzy:
Harasim, D.
Powiązania:
https://bibliotekanauki.pl/articles/221279.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optoelectronic sensors
tilted bragg grating
sensing technology
Opis:
This paper presents an experimental study on influence of input light polarization on the spectral characteristics of a fibre twist sensor based on Tilted Fiber Bragg Grating (TFBG) with simultaneous application of bending to an optical fibre. The application of proposed measurement stand could provide the ability of transforming the bending to a displacement. The twist measurement was performed by tuning of the sensor illuminating light polarization angle. The spectral parameters of selected cladding mode which are sensitive to the rotation of input light polarization angle have been shown. This paper shows the characteristics of transmittivity and wavelength shift for an incident high-order cladding mode measured with different curvatures of fibre. The dependency of selected cladding mode spectral parameters related with the twist measurement on the influence of temporary bending has been shown. The measurements were performed for two positions of sensing structure refractive index perturbations in relation to the bending direction plane. The experimental results show that the direction of TFBG structure bending has a small influence on the stability of spectral parameters characteristic for twist measurement, assuming that the bending direction is fixed while measurement.
Źródło:
Metrology and Measurement Systems; 2017, 24, 3; 577-584
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laserowe wykrywanie obiektów podwodnych
Underwater remote laser sensing
Autorzy:
Wojtanowski, J.
Zygmunt, M.
Gawlikowski, A.
Młodzianko, A.
Piotrowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/208488.pdf
Data publikacji:
2009
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
teledetekcja podwodna
LIDAR
propagacja
woda morska
teledetekcja laserowa
lidar
underwater remote sensing
laser propagation
sea water
laser remote sensing
Opis:
W pracy przedstawiono wyniki analiz związanych z możliwością zastosowania promieniowania laserowego do zdalnej detekcji prowadzonej w środowisku wody morskiej. W ramach projektu badawczego, realizowanego w Instytucie Optoelektroniki WAT, opracowano układ dwubarwnego dalmierza laserowego, który posłuży do wykonania badań i weryfikacji przyjętych modeli teoretycznych. Uwzględniono przy tym zarówno analityczne wyznaczenie mocy sygnału tła jak i mocy użytecznego sygnału echa. Omówiono wiele zjawisk związanych z propagacją promieniowania laserowego w wodzie morskiej a także wpływ jej najważniejszych własności optycznych na możliwości prowadzenia podwodnej teledetekcji. Dla założonej realizacji sprzętowej przedstawiono obliczenia związane z wyznaczeniem stosunku sygnał-szum dla różnych warunków prowadzonej teledetekcji oraz dokonano określenia maksymalnych zasięgów skutecznej pracy dalmierza laserowego do pomiarów podwodnych.
Theoretical and practical aspects of laser application in the field of underwater remote sensing are presented. Water characteristics concerning electromagnetic radiation propagation have been considered. Analytical approach covers both "echo" signal reflected from an underwater object and background noise signal level generated mainly by the sunlight and diffuse atmospheric illumination. Considering the real configuration of the equipment and its technical specification, signal-to-noise ratio level was computed for some specific environmental conditions. It enabled to evaluate the maximum distance ranges of underwater remote sensing. The results form the basis for practical applications of Lidar system developed at the Institute of Optoelectronics of the Military University of Technology in Warsaw.
Źródło:
Biuletyn Wojskowej Akademii Technicznej; 2009, 58, 1; 153-175
1234-5865
Pojawia się w:
Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Meteorological satellites since 40 years in IMWM service
Autorzy:
Struzik, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/703199.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
satellite remote sensing
meteorological satellite system
meteorology
hydrology
Opis:
The history of satellite remote sensing applications in IMWM was presented, referring to history of remote sensing and also development and actual state of meteorological satellite system. Main areas of applications were presented together with examples of products generated from satellite data operationally received in IMWM since 40 years. The problem of data resolution from meteorological satellites fulfilling requirements of meteorology were presented on examples of processes for which were designed. Dynamical development of meteorological satellites in recent years were presented focusing on METEOSAT Second Generation and METOP satellites.
Źródło:
Nauka; 2008, 4
1231-8515
Pojawia się w:
Nauka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the compress sensing theory for improvement of the TOF resolution in a novel J-PET instrument
Autorzy:
Raczyński, L.
Moskal, P.
Kowalski, P.
Wiślicki, W.
Bednarski, T.
Białas, P.
Czerwiński, E.
Gajos, A.
Kapłon, Ł.
Kochanowski, A.
Korcyl, G.
Kowal, J.
Kozik, T.
Krzemień, W.
Kubicz, E.
Niedźwiecki, S.
Pałka, M.
Rudy, Z.
Salabura, P.
Gupta-Sharma, N.
Silarski, M.
Słomski, A.
Smyrski, J.
Strzelecki, A.
Wieczorek, A.
Zieliński, M.
Zoń, N.
Powiązania:
https://bibliotekanauki.pl/articles/146280.pdf
Data publikacji:
2016
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
compressed sensing
positron emission tomography
time-of-flight
Opis:
Nowadays, in positron emission tomography (PET) systems, a time of fl ight (TOF) information is used to improve the image reconstruction process. In TOF-PET, fast detectors are able to measure the difference in the arrival time of the two gamma rays, with the precision enabling to shorten signifi cantly a range along the line-of-response (LOR) where the annihilation occurred. In the new concept, called J-PET scanner, gamma rays are detected in plastic scintillators. In a single strip of J-PET system, time values are obtained by probing signals in the amplitude domain. Owing to compressive sensing (CS) theory, information about the shape and amplitude of the signals is recovered. In this paper, we demonstrate that based on the acquired signals parameters, a better signal normalization may be provided in order to improve the TOF resolution. The procedure was tested using large sample of data registered by a dedicated detection setup enabling sampling of signals with 50-ps intervals. Experimental setup provided irradiation of a chosen position in the plastic scintillator strip with annihilation gamma quanta.
Źródło:
Nukleonika; 2016, 61, 1; 35-39
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compressed sensing in MRI : mathematical preliminaries and basic examples
Autorzy:
Błaszczyk, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/146500.pdf
Data publikacji:
2016
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
compressed sensing
magnetic resonance imaging
sampling theory
sparsity
Opis:
In magnetic resonance imaging (MRI), k-space sampling, due to physical restrictions, is very time- -consuming. It cannot be much improved using classical Nyquist-based sampling theory. Recent developments utilize the fact that MR images are sparse in some representations (i.e. wavelet coeffi cients). This new theory, created by Candès and Romberg, called compressed sensing (CS), shows that images with sparse representations can be recovered from randomly undersampled k-space data, by using nonlinear reconstruction algorithms (i.e. l1-norm minimization). Throughout this paper, mathematical preliminaries of CS are outlined, in the form introduced by Candès. We describe the main conditions for measurement matrices and recovery algorithms and present a basic example, showing that while the method really works (reducing the time of MR examination), there are some major problems that need to be taken into consideration.
Źródło:
Nukleonika; 2016, 61, 1; 41-43
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teledetekcja jako metoda monitorowania infrastruktury kolejowej
Remote sensing as a method of railway infrastructure monitoring
Autorzy:
Pilecka, E.
Powiązania:
https://bibliotekanauki.pl/articles/248366.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:
teledetekcja
infrastruktura kolejowa
monitoring
remote sensing
railway infrastructure
Opis:
W artykule przedstawiono możliwości wykorzystania teledetekcji w celu monitorowania infrastruktury kolejowej. Omówiono aktualnie stosowane metody teledetekcji na różnych poziomach pomiarów: satelitarnym, lotniczym i naziemnym. Przedstawiono przykłady zastosowań teledetekcji do monitorowania infrastruktury kolejowej oraz przeprowadzono analizę zalet i ograniczeń tej metody. W ramach badań naziemnym skanerem laserowym RIEGL-400 stwierdzono przemieszczenia skarpy kolejowej na linii kolejowej nr 8 Warszawa – Kraków. W niniejszym artykule przedstawiono przykładowe wyniki z dalszych pomiarów naziemnym skanerem laserowym, którymi objęto strefy przejściowe na wiadukcie celem sprawdzenia wpływu osuwiska na wiadukt. Z przedstawionej w artykule analizy wynika, że teledetekcja naziemna w porównaniu z teledetekcją satelitarną i lotniczą wykazuje wiele pozytywnych aspektów.
The possibilities of remote sensing usage to railway infrastructure monitoring have been presented in the paper. The currently applied methods of remote sensing at various levels of measurements such as: satellite, aerial and ground have been discussed. Some examples of remote sensing application for railway infrastructure monitoring and the analysis of advantages and limitations of this method have been given. During ground measurements with the use of laser scanner RIEGL-400 on the railway line No. 8 Warsaw - Krakow embankment displacement was found. Some findings from the next measurement sessions with implementation of ground laser scanner that were carried out at transition zones on the viaduct in order to check the impact of landslides on the overpass have also been given. The results of carried out analysis show that ground remote scanning in comparison with satellite measurement and aerial measurement points out several positive aspects.
Źródło:
Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne; 2013, 3(102); 337-349
1231-9171
Pojawia się w:
Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Życie w społeczności - warunki powstawania biofilmu
Live in the community - biofilm formation
Autorzy:
Cłapa, Tomasz
Selwet, Marek
Narożna, Dorota
Powiązania:
https://bibliotekanauki.pl/articles/1034553.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Tematy:
autoinduktory
biofilm
quorum sensing
społeczność bakteryjna
środowisko naturalne
Opis:
Wszystkie organizmy żywe podlegają wpływom innych organizmów wykazując różnego rodzaju zachowania społeczne. Mikroorganizmy nie są wyjątkiem. Komórki bakterii wolno żyjących (planktonicznych) są w stanie nie tylko wydzielać związki sygnałowe ale także mogą je odbierać. Proces komunikacji bakterii opierający się na tego typu sygnałach chemicznych jest szczególnie ważny w wielokomórkowych strukturach, jakie mogą tworzyć bakterie, czyli biofilmach. Takie społeczności bakteryjne są w stanie wzrastać w wielu środowiskach biotycznych jak i abiotycznych, niejednokrotnie w warunkach ekstremalnych. Proces komunikacji pomiędzy komórkami jest bardzo ważny, umożliwia nie tylko dzielenie się funkcjami fizjologiczno-metabolicznymi, ale również sprzyja ewolucji bakterii wskutek horyzontalnego transferu genów.
Istotne jest poznanie nie tylko sposobu komunikacji pomiędzy mikroorganizmami, ale także warunków w jakich może zachodzić oraz procesów metabolicznych, którymi może ona sterować.

All living organisms interact with each other and may exhibit cooperative behavior. Bacteria are not an exception. Free-living cells (planctonic cells) are able to communicate to each other by using specific types of chemical compounds. Such communication processes between bacterial cells are particularly important in multicellular structures, referred to as biofilms. Those structures are able to grow both in biotic and abiotic environments, in many cases even in very extreme conditions. The cell-communication processes are so important in bacterial biofilms for they provide sharing of physiological and metabolic functions between different species and thus stimulation of horizontal gene transfer that leads to bacterial evolution. Therefore, of importance is not only discovery and understanding of the communication system between microorganisms, but also of the conditions in which they may occur and influence cellular metabolic processes.
Źródło:
Kosmos; 2016, 65, 3; 463-468
0023-4249
Pojawia się w:
Kosmos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Delineation of the groundwater potential using remote sensing and gis: a case study of Ulhas basin, Maharashtra, India
Autorzy:
Doke, Arjun
Powiązania:
https://bibliotekanauki.pl/articles/1048748.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
groundwater
remote sensing
GIS
Ulhas
woda gruntowa
teledetekcja
Opis:
Groundwater is one of the most valuable natural resources which is essential for the environmental, biological and socio-economic activities. The present paper aims to delineate groundwater potential of Ulhas basin in India through remote sensing and geographical information system. Several groundwater influencing factors such as geology, geomorphology, slope, landuse, rainfall, lineaments are mapped in GIS environment. Later, these factors were ranked on the basis of their influence on the groundwater potential of a region. After that all these factors were integrated together in GIS environment to prepare the groundwater potential map of Ulhas basin. By implementing influencing factor, it is observed that about 21%, 50% and 29% areas are falling under high, moderate, and low groundwater potential zones, correspondingly. The present study is highly valuable to the policymakers, administrative bodies, engineers for management of groundwater and preparing sustainable water resource plans in Ulhas basin. Additionally, the present paper will help to construct artificial groundwater recharge plan in the study area.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2019, 31; 49-64
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impact of Coal Exploitation on Tidal Flat Changes, an Investigation Using Remote Sensing Data in Vietnam
Autorzy:
Pham, Thi Lan
Tong, Si Son
Le, Thi Thu Ha
Le, Thi Le
Hoang, Huu Duc
Powiązania:
https://bibliotekanauki.pl/articles/2020940.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
tidal flat
coal
remote Sensing
przypływy
węgiel
teledetekcja
Opis:
Tidal flat plays a crucial role in socio-economic development and ecological environment. Tidal flats in Ha Long-Cam Pha in Vietnam are impacted by human activities, especially coal mining activities. Using remote sensing data is able to detect, extract, and monitor the changes of tidal flats and exploited coal mine area with multi-temporal, in various scales, and for a large coverage. This study aims to investigate the impact of coal mining activities on the changes of tidal flats using remote sensing in Cam Pha, Ha Long, one of the biggest coal basins in Vietnam. Digital Elevation Models (DEMs) of tidal flats constructed by Landsat satellite images acquired in years 1989, 2001, and 2014 are compared to determine the volume changes. Besides, coal mining activities including coal production, waste rock dump area, and the expansion of open coal mine during the period 1989-2014 are investigated using correspondent Landsat images and the reports from the coal mine companies in the study area. Sediment samples in tidal flats are analyzed to determine the origin of the sediments. As the results, organic matter in the tidal flats is dominant with the concentration of 459 g/kg to 607 g/kg, which is evidence for the impact of coal exploitation on the coastal environment. In addition, the relationship between coal mine activities and tidal flat variation is well observed in this study.
Źródło:
Inżynieria Mineralna; 2021, 2; 521--532
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integration of Remote Sensing Data in a Cloud Computing Environment
Autorzy:
Sabri, Yassine
Bahja, Fadoua
Pet, Henk
Powiązania:
https://bibliotekanauki.pl/articles/2055265.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
remote sensing
data integration
cloud computing
big data
Opis:
With the rapid development of remote sensing technology, our ability to obtain remote sensing data has been improved to an unprecedented level. We have entered an era of big data. Remote sensing data clear showing the characteristics of Big Data such as hyper spectral, high spatial resolution, and high time resolution, thus, resulting in a significant increase in the volume, variety, velocity and veracity of data. This paper proposes a feature supporting, salable, and efficient data cube for time-series analysis application, and used the spatial feature data and remote sensing data for comparative study of the water cover and vegetation change. In this system, the feature data cube building and distributed executor engine are critical in supporting large spatiotemporal RS data analysis with spatial features. The feature translation ensures that the geographic object can be combined with satellite data to build a feature data cube for analysis. Constructing a distributed executed engine based on dask ensures the efficient analysis of large-scale RS data. This work could provide a convenient and efficient multidimensional data services for many remote sensing applications.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 1; 167--172
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water in the city and remote sensing
Autorzy:
Tatosova, L.
Sinka, K.
Novotna, B.
Huska, D.
Powiązania:
https://bibliotekanauki.pl/articles/2049666.pdf
Data publikacji:
2021
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
remote sensing
urbanized area
LAI
water management
accumulation
Opis:
At present, climate change is particularly evident in areas heavily used by man. Such localities are mainly urbanized areas. With the increment in urban area and construction related to urban development, the hydrological regime of such sites is disrupted. When the natural character of the surface has changed, where precipitation, evapotranspiration and outflow of water from the area has been balanced, there is now an increase in territories that are impermeable and caused almost 100% runoff. The influence of the built-up area on the temperature increase in urbanized areas in comparison with the surrounding landscape is also known as a thermal island. The identification of the current status and possible potential interventions in the water regime of cities is provided by the possibility of using information obtained from the satellite monitoring of the Earth's surface. The range of areas in urbanized areas contributing to runoff can be ascertained by remote sensing, where in particular using multispectral images, where it is possible to distinguish surface characteristics using LAI and controlled image classification. At the same time, it is possible to identify areas that could be used to create space for rainwater infiltration and its accumulation below the surface. The paper evaluates the extent of changes in land use in Nitra from 1954 to 2017. The growth of areas with minimal infiltration capacity in the area of the Slovak University of Agriculture is identified. Possibilities of use of rainwater and their accumulation in the monitored area are analyzed.
Źródło:
Environment, Earth and Ecology; 2021, 5, 1; 26-38
2543-9774
2451-4225
Pojawia się w:
Environment, Earth and Ecology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Landuse and land cover dynamics in the Volta River Basin surrounding APSD forest plantation, Ghana
Autorzy:
Koranteng, Addo
Adu-Poku, Isaac
Zawiła-Niedźwiecki, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2044141.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
remote sensing
deforestation
socio-economic trends
anthropogenic pressure
Opis:
Forest plantation is reckoned to accounts for 7% of total global forest cover and has the potential to provide 75% of the global industrial round wood supply. The study analyzed forest resource use trend, mapped out areas of high biodiversity conservation,and made recommendations to promote and sustain large-scale plantation development against the background of anthropogenic pressure on vulnerable ecosystems and biodiversity management. The methodology adopted for the study involved the application of geographic information system (GIS) and remote sensing techniques, field survey and community interactions. Major findings of the assessment include substantial land use/land cover conversion from one category to another within the past 20 years as a result of agricultural expansion, urbanisation, charcoal production and wood fuel harvesting; dense woodland and riverine forest experienced decline for the 20-year period whilst agriculture open woodland/grassland and settlement were appreciated; floral diversity was high in the dense woodlands with low regeneration potential because of persistent annual wildfires; significant socio-economic and environmental impacts resulting in the conversion of woodlands and removal of riverine vegetation leading to drying out of streams; charcoal production and shifting cultivation leading to decrease in soil productivity and poor crop yields that promotes poverty amongst the inhabitants.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 1; 78-89
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil Salinity Classification Using Machine Learning Algorithms and Radar Data in the Case from the South of Kazakhstan
Autorzy:
Merembayev, Timur
Amirgaliyev, Yedilkhan
Saurov, Sultan
Wójcik, Waldemar
Powiązania:
https://bibliotekanauki.pl/articles/2202157.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
environmental correlation
soil salinity
machine learning
remote sensing
Opis:
Soil salinity is one of the major impact factors on agriculture in the South of Kazakhstan. Prediction and estimation of soil salinity before planting a season usually helps to plan for the leaching of the salt. In the paper, satellite data such as radar data and machine learning algorithms, were used to classify soil salinity. Numerical results were presented for the Turkestan region, which contains more than 102 points. The machine learning algorithms, including Gaussian Process, Decision Tree, and Random Forest, were compared. The evaluation of the model score was realized by using metrics, such as accuracy, Recall, and f1. In addition, the influence of the dataset features on the classification was investigated using machine learning algorithms. The research results showed that the Gaussian Process model has the best score among considered algorithms. In addition, the results are consistent with the outcome of the Shapley Additive exPlanations (SHAP) framework.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 61--67
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integration Remote Sensing and Meteorological Data to Monitoring Plant Phenology and Estimation Crop Coefficient and Evapotranspiration
Autorzy:
Hassan, Diaa Fliah
Abdalkadhum, Aysar Jameel
Mohammed, Rafal J.
Shaban, Amin
Powiązania:
https://bibliotekanauki.pl/articles/2086414.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
actual evapotranspiration
crop coefficient
remote sensing
vegetation index
Opis:
The water requirements of the wheat crop are represented by the actual evapotranspiration, which depends on the meteorological data of the study area and the amount of water consumed during the season. Estimation of crop coefficients (Kc) and evapotranspiration (ETc) using remote sensing data is essential for decision-making regarding water management in irrigated areas in arid and semi-arid large-scale areas. This research aims to estimate the crop coefficient calculated from remote sensing data and the actual evapotranspiration values for the crop. The FAO Penman-Monteith equation has been used to estimate the reference evapotranspiration from meteorological data. Linear regression analysis was applied by developing prediction equations for the crop coefficient for different growth stages of comparing with the vegetation cover index (NDVI). The results showed that (R2 = 0.98) between field crop coefficient and crop coefficient predicted from (Kc = 2.0114 NDVI-0.147) in addition to (RMSE = 0.92 and (d = 0.97).
Źródło:
Journal of Ecological Engineering; 2022, 23, 4; 325--335
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of Selected Peatland Uses and Soil Moisture Based on TVDI
Autorzy:
Holidi, -
Armanto, M. Edi
Damiri, Nurhayati
Putranto, Dinar Dwi Anugerah
Powiązania:
https://bibliotekanauki.pl/articles/952455.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
remote sensing
land use
drought
fire
South Sumatra
Opis:
The conversion of peatland from forest to non-forest causes environmental damage and increases high land dryness. Mapping of peatland based on dryness is very important to control and prevent fires. This study aims at characterizing peatland based on the level of temperature vegetation dryness index (TVDI) and evaluating the correlation between TVDI value and soil moisture. The research was conducted in August 2018 during the dry season. The area of research located in peat hydrological unit of Sibumbung River – Batok River in Ogan Komering Ilir (OKI) District of South Sumatra Province covering 63,427 ha area that consists of various land uses. The result showed that extreme wet category is found in water bodies and secondary forests that have high density, moderate wet is found in paddy fields and grass, normal area is found in the area covered by low-density trees, moderate dry is found in shrubs and oil palm plantations with good management and extreme dry areas is found in grasses and oil palm with poor cultivation management. There is a correlation between the TVDI value to the soil moisture on 0–10 cm and 10–20 cm and 20–30 cm depth.
Źródło:
Journal of Ecological Engineering; 2019, 20, 4; 194-200
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compressed optical image encryption in the diffractive-imaging-based scheme by input plane and output plane random sampling
Autorzy:
Wan, Shujia
Gong, Qiong
Wang, Hongjuan
Ma, Shibang
Qin, Yi
Powiązania:
https://bibliotekanauki.pl/articles/2060687.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
diffractive-imaging-based encryption
compressive sensing
random sampling
Opis:
The successful recovery of the plaintext in the simplified diffractive-imaging-based encryption (S-DIBE) scheme needs to record one intact axial intensity map as the ciphertext. By aid of compressive sensing, we propose here a new image encryption approach, referred to as compressed DIBE (C-DIBE), which allows further compression of the intensity map. The plaintext is sampled before being sent to DIBE. Afterwards, the intensity map recorded by the CCD camera is also processed by such sampling operation to generate the ciphertext. For decryption, we first obtain the sparse plaintext using the proposed phase retrieval algorithm, and then reobtain the primary plaintext from it via compressive sensing. Numerical results show that a proper proportion of the intensity map (e.g. 50%) is enough to totally recover a grayscale image. We achieve multiple-image encryption by space multiplexing without enlarging the size of the ciphertext. The robustness of C-DIBE against brute-force attack evidently outperforms S-DIBE due to the extended key space. Numerical simulation has been presented to confirm the proposal.
Źródło:
Optica Applicata; 2022, 52, 1; 51--66
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of Sensing (S) and Intuition (N) Personality Characteristics in Selected Business School Students in Gujarat State
Autorzy:
Makwana, Kirti
Powiązania:
https://bibliotekanauki.pl/articles/29552067.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Papieski Jana Pawła II w Krakowie
Tematy:
intuition
sensing
personality
NERIS Type Explorer® Scale
MBTI
Opis:
Personality is one of the utmost important assets of an individual which aids in categorizing the bounds of success, happiness and achievement in our life[1]. The study explores the sensing and intuitive personality dimensions of selected business school students across Gujarat state. Further, the study explores statistical differences in terms of various demographic aspects. NERIS Type Explorer® Scale was used to check the personality type of a total of 1067 management students. 69.5 per cent (742) of the respondents have a Sensing (S) personality dimension compared to 30.5 per cent (325) Intuition (N) personality dimension as dominating type. The conclusions of this research study are also reinforced by past research work which confirms that there are noteworthy differences between Sensing (S) and Intuitive (N) personality dimensions regarding selected demographic variables.
Źródło:
The Person and the Challenges. The Journal of Theology, Education, Canon Law and Social Studies Inspired by Pope John Paul II; 2023, 13, 2; 265-281
2391-6559
2083-8018
Pojawia się w:
The Person and the Challenges. The Journal of Theology, Education, Canon Law and Social Studies Inspired by Pope John Paul II
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ammonia level sensor using tapered optical fiber coated with titanium dioxide-incorporated porphyrin
Autorzy:
Parasuti, Frazna
Hikmawati, Dyah
Trilaksana, Herri
Yasin, Moh.
Powiązania:
https://bibliotekanauki.pl/articles/27310105.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ammonia sensing
tapered optical fibre
titanium dioxide
porphyrin
Opis:
Since ammonia is water-soluble, environmental studies have shown that the industrial waste such as fertilizer manufacturing, food products, palm oil, urea fertilizer industry can cause very serious damage to water body ecosystems if not properly managed, resulting in a decrease in water quality. Devices based on optical technology, especially devices that combine optical fibers and nanomaterials, are identified as highly sensitive to the species of interest by detecting changes in physicochemical properties. A practical, easy-to-use, inexpensive instrument for detecting ammonia level was proposed using tapered optical fiber (TOF) coated with titanium dioxide-incorporated porphyrin. TOF was fabricated by simultaneously stretching and heating. The preparation of TiO2/porphyrin/gelatine was prepared to coat tapered optical fiber by dipping. SEM analysis shows an increase in length and a decrease in diameter, also the successful coating of titanium dioxide and porphyrin in the taper region. The EDX analysis also proves the presence of the Ti element in the TOF layer. The TOF produces significant sensing performances toward the ammonia liquid concentration level. The TOF coated with titanium dioxide-incorporated porphyrin can detect a one ppm difference in ammonia concentration with a certain range of output voltage for every concentration has.
Źródło:
Optica Applicata; 2023, 53, 3; 353--361
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing and Monitoring Sustainable Land Management for Land Degradation Neutrality in Wadi El Farigh
Autorzy:
Erian, Wadid F.
Nasr, Yehia A.
Yacoub, Rafat K.
El-Abd, Raghda A.
Powiązania:
https://bibliotekanauki.pl/articles/24201800.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
remote sensing
geostatistical analysis
GIS
land degradation change
Opis:
This study aimed to understand the new management challenges related to the impact of climate change on biodiversity, deterioration of agricultural productivity, food security, and increasing rates of desertification. This constitutes an important indicator for studying Land Degradation Neutrality (SDGs Target 15.3), which is considered a significant target in achieving the Sustainable Development Goals 2030. The present study is concerned with assessing and monitoring land management and land degradation in Wadi El Farigh from 2000 to 2019. Soil quality is a major part of the chain that leads to understanding sustainable land management of natural resources (land, groundwater, and natural vegetation). A geopedological approach produced the studied area’s physiographic and soil map. The study of changes in land degradation level in Wadi El Farigh over 20 years with a period of every five years shows a very high improvement in the study area from the year 2000 up to 2014. From 2015 to 2019, this class was reduced due to the effects of land degradation reflected by the use of saline water for irrigating crops. Using remote sensing and geostatistical analyses within the GIS environment illustrated that the soils were classified as Entisols, representing 79.45 of the total studied area, and Aridisols representing 20.55% of the total studied area.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 55--63
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image compression-encryption algorithm combining compressive sensing with log operation
Autorzy:
Chen, R.-L.
Zhou, Y.
Luo, M.
Zhang, A.-D.
Gong, L.-H.
Powiązania:
https://bibliotekanauki.pl/articles/174009.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
image encryption
image compression
compressive sensing
log operation
Opis:
Based on compressive sensing and log operation, a new image compression-encryption algorithm is proposed, which accomplishes encryption and compression simultaneously. The proposed image compression-encryption algorithm takes advantage of not only the physical realizability of partial Hadamard matrix, but also the resistance of the chosen-plaintext attack since all the elements in the partial Hadamard matrix are 1, –1 or log 1 = 0. The proposed algorithm is sensitive to the key and it can resist various common attacks. The simulation results verify the validity and reliability of the proposed image compression-encryption algorithm.
Źródło:
Optica Applicata; 2018, 48, 4; 563-573
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Erased by the Plough, Spotted from the Air. Remains of Earthwork Sites from Silesia
Autorzy:
Furmanek, Mirosław
Wroniecki, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/498092.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Rzeszowski. Instytut Archeologii Uniwersytetu Rzeszowskiego. Muzeum Okręgowe w Rzeszowie
Tematy:
aerial prospection
remote sensing
fortified settlements
Silesia, Medieval
Opis:
Since 2012 south-western Poland has been subject to regular aerial prospection campaigns that covered a vast area of the Upper Silesian, Lower Silesian and Opole regions. Eight surveys were conducted in with a total of 44 flight hours during late spring and summer dates. Their primary aim was the recognition of Neolithic and Early Bronze Age communities and landscapes. Additional photographic documentation of known and newly discovered features from other chronological periods was also obtained. The article presents a selection of data from five medieval settlements (Borucin site 2, Chrzelice site 1, Gniechowice site 1, Komorno site 1, Stary Zamek site 6), whose common feature is their nearly completely leveled earthworks, which makes the presented aerial imagery a basic source of information about them. The potential of remote sensing approaches in the case of quickly deteriorating archeological terrain forms, although not used frequently, has numerous advantages especially in contrary to the still favoured destructive excavation strategies. A visible intensification of archeological site destruction due to all-round development of urban and rural areas has affected all types of archeological sites – also those characterized (until relatively recently) by unique and complex earthwork remains. This situation requires an adaptation of new protection strategies, as well as alternative cognitive and methodical schemes. The case studies presented in this paper are a final wakeup call showcasing the scale of the ongoing, countrywide, systematic destruction of important yet unknown or poorly researched archeological sites. The remedy in our opinion is the recognition of non-invasive remote sensing and geophysical techniques as primary research methods as they allow defining crucial elements, such as form, size, layout, or functional interpretation.
Źródło:
Analecta Archaeologica Ressoviensia; 2017, 12; 199-220
2084-4409
Pojawia się w:
Analecta Archaeologica Ressoviensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Yeast metabolic adaptation to environment
Autorzy:
Drygaś, Barbara
Biesiadecka, Magdalena Karolina
Powiązania:
https://bibliotekanauki.pl/articles/1181238.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
adaptation
alcohol dehydrogenase
quorum-sensing substance
yeast metabolism
Opis:
Yeast metabolism has been a subject of research since the XIX century, when Louis Pasteur had proved that yeast are live organisms and fermentation is one of the processes to produce molecular energy. Yeast ability to ferment is a consequence of alcohol dehydrogenase (ADH) activity, the group of enzymes responsible for sugar conversion in to ethanol as ADH1, and alcohol metabolism as a source of carbohydrates (ADH2). The group of ADH enzymes play a crucial role for yeast adaptation especially in rich sugar environments such as after angiosperm occurrence. Evolution of yeast genes is based on chromosomal multiplication event, previously explained as a Whole Genome Duplication (WGD), presently it has been proven that the yeast common ancestor is a hybrid from different strains. Duplication cause that some multiplaies genes accumulate mutation without cell growth burden and consequently favor formations exploiting new features of proteins. Yeast ability to ferment make them dominate in a sugar environment, however Saccharomyces cerevisiae evolve some quorum-sensing mechanism, which plays crucial role in population messengers as tyrosol which is signaling about cellular density in culture. Moreover there are scientific reports about yeast specific social-wraps which suggest that yeast surviving depends on more complex mechanisms, which pose challenges for researchers. The aim of this article is a short review of yeast metabolic strategy which allow yeast to dominate in high sugar environments and abilities which make yeast so important in nature.
Źródło:
World Scientific News; 2017, 72; 558-564
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integration of Aeromagnetic Data and Landsat Imagery for Structural Analysis: A Case Study of Awgu in Enugu State, South-Eastern, Nigeria
Autorzy:
Ijeh, B. I.
Ohaegbuchu, H. E.
Okpetue, P. C.
Powiązania:
https://bibliotekanauki.pl/articles/1112446.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Aeromagnetic data
Awgu
Landsat
remote sensing
structural analysis
Opis:
In this study, digital format data comprising of aeromagnetic and remotely sensed (Landsat ETM+7) data were used for structural interpretation of the Awgu area (predominantly underlain by sedimentary rocks) in Enugu State, southeastern part of Nigeria. Aeromagnetic data were analyzed using the Oasis Montaj 7.5 software and interpretation was carried out by applying the vertical and horizontal gradients, analytical signal, reduction to pole, tilt depth, as well as Euler deconvolution. The total magnetic intensity map shows a magnetic signature ranging from -39nT to 129nT. The 3D Euler solution of the study area has a structural index of 1.0 with dyke/fault as the shape of the inferred geological structure. In the Landsat ETM+7 satellite data used, band 5 was found as the most suitable in (automatic) delineation. The automatic lineament extraction process was carried out utilizing the line module of PCI Geomatica (2015 version). The essence of analysis and interpretation of the Landsat ETM+7 was to determine the lineament trends and density across the area. Rockworks 16 version software was used to generate the rose diagrams. As a result of the work, the aeromagnetic and Landsat lineament maps of the study area were summarized using rose diagrams. This revealed NE-SW as the major trend with some secondary trends NW-SE, E-W and N-S directions. However, the NE-SW trend reflects the younger tectonic events, because the younger events are more pronounced and tend to obliterate the older events. In a comparison of the aeromagnetic and Landsat lineament extraction of the study area in terms of number of lineaments, directions and total length of lineaments, the Landsat imagery were found to be better than the number, directions and total length of the aeromagnetic data.
Źródło:
World News of Natural Sciences; 2018, 18, 2; 79-105
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations of the Shape Memory Alloy actuator applied in a current sensitive switch
Autorzy:
Kciuk, M.
Kłapyta, G.
Świątek, K.
Powiązania:
https://bibliotekanauki.pl/articles/973064.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
SMA
shape memory alloys
actuator
current sensing actuator
Opis:
The main goal of this paper is to present results of investigations of the Shape Memory Alloy (SMA) actuator applied in a current sensitive switch. The SMA muscle wire actuates the electric micro switch, breaking the electrical circuit. The prototype stand of the switch, automatically breaking the circuit when overcurrent appears, was designed. The stand consists of a prototype switch construction and a measuring system, allowing for various investigations. The measurement methodology and selected results of the performed experiments are also presented. Finally, the authors try to answer the following question: is it possible to use the SMA actuator as a main drive in a current sensing switch?
Źródło:
Measurement Automation Monitoring; 2016, 62, 7; 221-226
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of macroalgae groupings in shallow waters of Admiralty Bay (King George Island, South Shetland Islands, Antarctic), plotted with the help of air photographs analysis
Autorzy:
Furmańczyk, Kazimierz
Zieliński, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2057654.pdf
Data publikacji:
1982
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
Admiralty Bay
benthic algae
photointerpretation
remote sensing
Źródło:
Polish Polar Research; 1982, 3, 1-2; 41-47
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The magnetic response of hydrothermal alteration in iron-oxide basement complex, NW Nigeria
Autorzy:
Aisabokhae, Joseph Ehimare
Bamidele, Oresajo
Powiązania:
https://bibliotekanauki.pl/articles/184732.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
alteration mapping
remote sensing
shear zone
aeromagnetic data
Opis:
Aeromagnetic data was processed in order to delineate structural trends which may be indicative of potential gold mineral traps in the Watari hill gold prospect located between longitude 5°8''and 5°16'', and latitude 11°24'' and 11°30'' in Garin Hawal district, northwest Nigeria. Landsat-8 OLI data was processed to produce colour composite, band ratio and minimum noise fraction images that mapped the hydrothermal alteration zone in the study area. The multispectral images which were displayed in Red-Green-Blue colours were subsequently pan-sharpened to display a greater image resolution of the area. The application of enhancement algorithms such as an analytic signal to the aeromagnetic data over the alteration zone helped in mapping the mafic metavolcanics, felsic metasediments and intruding granitoid complexes. Further reductions using the second vertical derivative and tilt angle derivative filters aided in delineating fracture/faults and the contact zones of the formations, especially the metasediments-metavolcanic boundary that delineates the shear zone. This study showed that the low-angle geologic structure between the metasediments and metavolcanics where hydrothermal alteration is present is likely to accommodate veins of gold mineralization in the study area.
Źródło:
Geology, Geophysics and Environment; 2019, 45, 2; 145-156
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical modeling of dual actuated compliant beam microgripper system
Autorzy:
Zaidi, N. A.
Bazaz, S. A.
Powiązania:
https://bibliotekanauki.pl/articles/280982.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
compliant structure
contact sensing
linear amplification
microgripper
micromanipulation
Opis:
This paper presents the analytical modeling for the design of a microgripper system that comprises dual jaw actuation mechanism with real-time contact sensing. The interdigitated lateral comb-drive based electrostatic actuator is used to move the gripper arms. Simultane- ous contact sensing is achieved through a transverse comb based capacitive sensor, to detect the contact between the jaws and microobject. The detailed analytical modeling of the mi- crogripper reveals that the stresses induced in the structure is well below the maximum yield stress of 7000MPa for single crystal silicon. The fabricated microgripper produced a displacement of 16 μm at gripper jaws for the applied actuation voltage of 45V, which is approximately the same as predicted by the analytical model.
Źródło:
Journal of Theoretical and Applied Mechanics; 2014, 52, 2; 459-468
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of remote sensing and mathematical morphology of landscape for studying thermo - karst processes
Autorzy:
Kapralova, V.
Powiązania:
https://bibliotekanauki.pl/articles/294538.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
remote sensing
mathematical morphology
landscape
thermo-karst processes
Źródło:
Landform Analysis; 2007, 5; 35-36
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of remote sensing and mathematical morphology of landscape for studying thermokarst processes
Autorzy:
Kapralova, V. N.
Powiązania:
https://bibliotekanauki.pl/articles/295138.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
remote sensing
landscape pattern analysis
mathematical morphology
landscape
Opis:
The purpose of this work is to study the development and regularity of morphological structures associated with thermokarst processes. An attempt is made to solve two problems, by analyzing the spatial regularity of morphological structures associated with thermokarst, and that of their dynamics. We use the method of landscape mathematical morphology - a branch of landscape science, investigating quantitative laws of landscape mosaics using methods of mathematical analysis of these mosaics. Investigation was carried out for five parcels in Siberia and Alaska. The analysis shows that a number of deductions from the proposed mathematical model for thermokarst lake plains are generally corroborated by empirical data.
Źródło:
Landform Analysis; 2012, 21; 9-16
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of Types of Sensors used in Remote Sensing
Autorzy:
Vincent, Shweta
Francis, Sharmila Anand John
Raimond, Kumudha
Kumar, Om Prakash
Powiązania:
https://bibliotekanauki.pl/articles/227262.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
disaster management
microwave sensors
optical sensors
Remote Sensing
Opis:
Of late, the science of Remote Sensing has been gaining a lot of interest and attention due to its wide variety of applications. Remotely sensed data can be used in various fields such as medicine, agriculture, engineering, weather forecasting, military tactics, disaster management etc. only to name a few. This article presents a study of the two categories of sensors namely optical and microwave which are used for remotely sensing the occurrence of disasters such as earthquakes, floods, landslides, avalanches, tropical cyclones and suspicious movements. The remotely sensed data acquired either through satellites or through ground based-synthetic aperture radar systems could be used to avert or mitigate a disaster or to perform a post-disaster analysis.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 2; 217-228
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Change Detection for SAR Imagery Using Connected Components Analysis
Autorzy:
Gromek, A.
Jenerowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/227323.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
change detection
TSX
SAR image analysis
remote sensing
Opis:
Objective of the described analysis is to provide consistent change detection method based on image processing techniques applied to the Synthetic Aperture Radar (SAR) images acquired over the same geographical area, but at two different time instances. The approach adopted in our work requires incorporation of results with the additional information derived from analysis based on mathematical morphology (MM) techniques and visual interpretation of multitemporal VHR optical satellite images.
Źródło:
International Journal of Electronics and Telecommunications; 2012, 58, 2; 111-116
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectrum Awareness in Cognitive Radio Systems
Autorzy:
Suchański, M.
Kaniewski, P.
Kosmowski, K.
Kustra, M.
Romanik, J.
Powiązania:
https://bibliotekanauki.pl/articles/1844448.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sensing
electromagnetic environment
radio environment maps
situational awareness
Opis:
The paper addresses the issue of the Electromagnetic Environment Situational Awareness techniques. The main focus is put on sensing and the Radio Environment Map. These two dynamic techniques are described in detail. The Radio Environment Map is considered the essential part of the spectrum management system. It is described how the density and deployment of sensors affect the quality of maps and it is analyzed which methods are the most suitable for map construction. Additionally, the paper characterizes several sensing methods.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 4; 665-670
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody i podejścia stosowane w integrującym przetwarzaniu obrazów teledetekcyjnych pozyskanych za pomocą różnych sensorów
Methods and approaches applied to multisensoral data fusion
Autorzy:
Mróz, M.
Szumiło, M.
Powiązania:
https://bibliotekanauki.pl/articles/341455.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Przyrodniczy we Wrocławiu
Tematy:
łączenie wielosensorowych danych teledetekcyjnych
remote sensing data fusion
Opis:
Artykuł poświęcony jest przedstawieniu koncepcji, metod i narzędzi stosowanych w integrującym przetwarzaniu danych teledetekcyjnych pozyskanych za pomocą różnych sensorów, określanych w terminologii anglojęzycznej jako "data fusion". Stanowi element dyskusji nt. podejść stosowanych w integracji danych wielosensorowych o różnej rozdzielczości przestrzennej i spektralnej oraz konieczności zdefiniowania formalnych ram oceny jakości wytwarzanych "obrazów syntetycznych". Niniejszy artykuł jest ogólnym i nie wyczerpującym przeglądem metod i technik łącznego przetwarzania danych. Zostaną tu również przedstawione koncepcje i główne pola wykorzystywania technik "fuzji" danych z odniesieniem do różnych pakietów oprogramowania, w których te techniki można odnaleźć. Nie jest to w żadnej mierze waloryzacja pakietów, wręcz przeciwnie, autorzy starają się uwolnić od patrzenia na problem przez pryzmat funkcjonalności jakiegokolwiek z oprogramowań dostępnych na rynku.
The paper presents the ideas, methods and tools used in fusion of remotely sensed data acquired by different systems and sensors. It is a contribution to the discussion on methods and approaches applied to fusion of imagery data having different spectral and spatial resolution, and on the necessity of elaboration of any formal framework of data fusion process quality assessment. This paper is general, not pretending to be an exhaustive revue of methods and techniques of data fusion. The authors show certain solutions in the context of commercial software functionality but they avoid any formal evaluating of them.
Źródło:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum; 2005, 4, 1; 17-28
1644-0668
Pojawia się w:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An overview of methods for tree geometric parameter estimation from ALS data in the context of their application for agricultural trees
Przegląd metod estymacji parametrów geometrycznych drzew z danych ALS w kontekście ich aplikacji dla drzew uprawnych
Autorzy:
Hadaś, E.
Powiązania:
https://bibliotekanauki.pl/articles/341462.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Przyrodniczy we Wrocławiu
Tematy:
ALS
trees
agriculture
remote sensing
drzewa
rolnictwo
teledetekcja
Opis:
The aim of this paper is to overview and analyse existing methods for estimation of tree geometric parameters from Airborne Laser Scanning (ALS) data in the context of their possible application for agricultural areas. A detailed description of the estimation methodology proposed by various research groups is presented, including Canopy Height Model creation, tree identification, crown delineation in 2D and 3D, estimation of tree height, crown base height, crown diameters and crown volume. Efficiency and drawbacks of presented methods are identified. It is also analysed, whether the existing methods, originally developed for forestry areas, are suitable for agricultural trees.
Celami pracy są przegląd oraz analiza istniejących metod estymacji parametrów geometrycznych drzew na podstawie danych lotniczego skaningu laserowego w kontekście ich aplikacji dla drzew uprawnych. W artykule przedstawiono szczegółowy opis metod estymacji tych parametrów stosowanych przez różne grupy badawcze. Opis uwzględnia budowę wysokościowego modelu koron, identyfikację drzew, identyfikację kształtu koron w 2D i 3D, estymację wysokości drzew, wysokości podstawy koron, średnic oraz objętości koron. Wskazano zalety i wady zaprezentowanych metod. Przeanalizowano także, czy opisane metody rozwinięte na obszarach leśnych mogą być wykorzystywane w przypadku drzew uprawnych.
Źródło:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum; 2015, 14, 3-4; 5-28
1644-0668
Pojawia się w:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of tropospheric NO2 over Iraq using OMI satellite measurements
Autorzy:
Rajab, Jasim M.
Hassan, Ahmed S.
Kadhum, Jasim H.
Al-Salihi, Ali M.
San Lim, Hwee
Powiązania:
https://bibliotekanauki.pl/articles/118650.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
nitrogen dioxide
air pollution
remote sensing
Baghdad
Iraq
Opis:
Tropospheric nitrogen dioxide (NO2) is a trace gas with important impact on atmospheric chemistry, human health and a key pollutant in particular cities, measured from space since the mid-1990s by the GOME, SCIAMACHY, OMI, and GOME-2 instruments. This study present ten years (monthly and yearly averaged) dataset from Ozone Monitoring Instrument (OMI) used to investigate tropospheric NO2 characteristics and variations over Iraq during 2005–2014. Annual NO2 shows an elevation from the northern to the southern and highest values was at central parts of Iraq. Monthly distributions revels higher values NO2 in winter and summer than spring and autumn seasons, and rising NO2 throughout study period over industrial and crowded urban zones. The trend analysis over Baghdad shows a linear growth rate 9.8% per year with an annual average (5.6·1015 molecules per 1 cm2). The air mass trajectory analysis as hotspot regions shows seasonal fluctuations between winter and summer seasons depend on weather conditions and topography. The increased NO2 values in winter are due to anthropogenic emissions and subsequent plumes from Europe. In addition, in summer because of hot weather and large paddy fields emissions. The lowest NO2 value was at monsoon period mostly linked to the rains. The OMI data and satellite information are able to observe the troposphere NO2 elevation at different regions.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2020, 29, 1; 3-16
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forecasting Oil Crops Yields on the Regional Scale Using Normalized Difference Vegetation Index
Autorzy:
Lykhovyd, Pavlo
Powiązania:
https://bibliotekanauki.pl/articles/1839197.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
regression analysis
remote sensing
soybean
sunflower
winter rape
Opis:
Early prediction of crop yields on large cropland areas is of a great importance for operational planning in the agrarian sector of economy and ensuring food security. Large-scale forecasts became possible owing to the introduction of remote sensing technologies in the systems of precision agriculture, providing the information on crops conditions both on a certain field and large croplands. The study on the forecasting of major oil crop yields, namely, sunflower (Helianthus annuus L), winter rape (Brássica nápus) and soybean (Glycine max), on the regional level in Kherson oblast of Ukraine was conducted using historical yielding data and monthly MODIS Terrain NDVI smoothed time series imagery with 250 m resolution of the period from 2012 to 2019. The statistical data on the crop yields were linked to the corresponding values of monthly NDVI to determine the type of inter-relationship and work out the regression models for the oil crops yield prediction based on the remotely sensed vegetation index. The highest correlation between the yields of the oil crops and NDVI with the best prediction accuracy were obtained by using the index values at the period of April for winter rape, July for sunflower, and August for soybean. The developed regression models have reasonable accuracy with the mean absolute percentage errors of predictions reaching 25.23 percent for sunflower, 18.28 percent for winter rape, and 13.24 percent for soybean. The models are easy in use and might be recommended for introduction in theory and practice of precision agriculture.
Źródło:
Journal of Ecological Engineering; 2021, 22, 3; 53-57
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Open-Path FTIR Spectral Radiation Intensity Of Hot Combustion Gases – Measurement And Interpretation
Autorzy:
Cięszczyk, S.
Powiązania:
https://bibliotekanauki.pl/articles/221668.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spectral remote sensing
temperature profile
hot gas
FTIR
Opis:
Spectral remote sensing is a very popular method in atmospheric monitoring. The paper presents an approach that involves mid-infrared spectral measurements of combustion processes. The dominant feature in this spectral range is CO2 radiation, which is used to determine the maximum temperature of nonluminous flames. Efforts are also made to determine the temperature profile of hot CO2, but they are limited to the laboratory conditions. The paper presents an analysis of the radiation spectrum of a non-uniform-temperature gas environment using a radiative transfer equation. Particularly important are the presented experimental measurements of various stages of the combustion process. They allow for a qualitative description of the physical phenomena involved in the process and therefore permit diagnostics. The next step is determination of a non-uniform-temperature profile based on the spectral radiation intensity with the 8 m optical path length.
Źródło:
Metrology and Measurement Systems; 2015, 22, 2; 193-204
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determining the influence of population density on the land surface temperature based on remote sensing data and GIS techniques: application to Prizren, Kosovo
Autorzy:
Dushi, Mimoza
Berila, Albert
Powiązania:
https://bibliotekanauki.pl/articles/35547861.pdf
Data publikacji:
2022
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
population density
LST
SUHI
GIS
remote sensing
Prizren
Opis:
The whole study was conducted for the Municipality of Prizren and aims to to determine the effect that the population density has on land surface temperature (LST). All this was achieved through the connection of land surface temperature (LST) and population density. The free Landsat 8 satellite image downloaded from the United States Geological Survey website was used and then processed using GIS and remote sensing techniques. To understand the relationship between population density and LST, we performed a regression analysis. This analysis showed a strong positive relationship with a value of r = 0.8206, emphasizing the important role that the population has in creating empowering areas that generate surface urban heat island (SUHI) effect. The results of the study clearly showed that in the northern, central, and western parts there are pixels with high LST values. This presentation corresponds with the population density, which means that it is precisely the actions of the population that help generate, display, and strengthen the harmful effect of the SUHI. The map with areas of high LST pixels are of great importance to the policymakers and urban planners of Prizren so that they can orient themselves in these areas and take all actions necessary to minimize this harmful effect which is worrying citizens. If it continues with unplanned development, the peripheral parts of Prizren are seriously endangered by the damage of the spaces which offer protection (green spaces) from the SUHI phenomenon.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2022, 31, 1; 47-62
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of the temperature inside standard integrated circuits
Pomiar temperatury wewnątrz standardowych układów scalonych
Autorzy:
Frankiewicz, M.
Kos, A.
Powiązania:
https://bibliotekanauki.pl/articles/159307.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Elektrotechniki
Tematy:
pomiar temperatury
ESD
układ scalony
temperature sensing
integrated circuits
Opis:
The paper describes method of temperature measurement of standard integrated circuits based on the data from the chip datasheet. Described temperature sensing technique uses built-in ESD protecting diodes. Some tests on LM741 operating amplifier were done. Results were compared with other temperature measurement methods.
Praca opisuje metodę pomiaru temperatury wewnątrz obudowy standardowych układów scalonych z wykorzystaniem danych z noty katalogowej układu. Przedstawiona technika rozpoznawania temperatury oparta jest o wykorzystanie wbudowanych w układ diod zabezpieczających przed wyładowaniami elektrostatycznymi. Dla potwierdzenia przydatności metody wykonano testy z wykorzystaniem wzmacniacza operacyjnego LM741. Wyniki zostały porównane z innymi metodami pomiaru temperatury.
Źródło:
Prace Instytutu Elektrotechniki; 2011, 251; 109-116
0032-6216
Pojawia się w:
Prace Instytutu Elektrotechniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rys historyczny rozwoju Katedry Geoinformacji, Fotogrametrii i Teledetekcji Środowiska
The history of development of the Geoinformation, Photogrammetry and Environmental Remote Sensing Department
Autorzy:
Sitek, Z.
Jachimski, J.
Bernasik, J.
Pyka, K.
Powiązania:
https://bibliotekanauki.pl/articles/131292.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
fotogrametria
teledetekcja
geoinformacja
środowisko
photogrammetry
remote sensing
geoinformation
environment
Opis:
W pracy przedstawiono w dużym skrócie historię Katedry Geoinformacji, Fotogrametrii i Teledetekcji Środowiska, która powstała w 1951 roku. Opisano pierwsze lata działalności, kiedy w nowopowstałym Zakładzie Fotogrametrii zapał i entuzjazm pracowników musiał zastępować brak sprzętu fotogrametrycznego. Sprzęt ten pozyskiwano stopniowo w kolejnych latach, wkładając w to dużo starań i wysiłku. W połowie lat 70. ubiegłego wieku Zakład Fotogrametrii był już bardzo dobrze wyposażony W dalszej części scharakteryzowano działalność dydaktyczną, badawczą i organizacyjną Katedry. Pokazano jak zmieniała się na przestrzeni lat specjalność prowadzona przez Katedrę, jej program był sukcesywnie dostosowany do rozwoju technologii fotogrametrycznej. W ostatniej dekadzie profil badawczy i dydaktyczny rozszerzył się głównie przez uzupełnienie o systemy informacji geograficznej. Dowodem wszechstronnej działalności naukowo-badawczej jest zamieszczony w pracy wykaz ważniejszych grantów krajowych i projektów międzynarodowych.
A brief history of the Geoinformation, Photogrammetry and Environmental Remote Sensing Department (established in 1951) is presented in the paper. The paper tells the story of the first years in the Department's operation when the eagerness and enthusiasm of its staff compensated for the lack of the photogrammetric equipment. The equipment was gradually acquired in the following years, and a lot of efforts were made in order to obtain it. In the mid 1970s, the Photogrammetry Department was already very well equipped. Next, the paper characterizes the educational, scientific and organizational activities of the Department. The authors show how the Department's major research specialities have been changing through years and how its programme has successively been adjusted to the development of the photogrammetry technology. In the previous decade the scientific and educational profiles were extended mainly due to the fact that the geographic information systems were included in them. One can verify the comprehensive scientific and research activities of the Department using the list of major national grants and international projects, which is included in the paper.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2009, 19; 399-410
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Bank Erosion, Accretion and Channel Shifting Using Remote Sensing and GIS: Case Study – Lower Course of the Bosna River
Autorzy:
Lovric, Novica
Tosic, Radislav
Powiązania:
https://bibliotekanauki.pl/articles/1052708.pdf
Data publikacji:
2016-03-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
bank erosion
channel migration
GIS
remote sensing
Bosna river
Opis:
River bank erosion, accretion and lateral channel migration are the most important geomorphological processes, which attract a great deal of attention from river engineering scientist over the last century. in the presented study, we assessed how the river’s shape and position have changed during 1958-2013 period using remote sensing and GIS. We have identified that the total area of bank erosion during given period equalled 8.3430 km2, of which 3.2593 km2 were on the left bank and 5.0837 km2 on the right bank. The total area of bank accretion from 1958 to 2013 equalled 10.7074 km2, of which 5.4115 km2 was on the left bank and 5.2958 km2 on the right bank. The Bosna riverbed average movement in the period 1958-2013 was established in the amount of 132.4 m. During this period, the average lateral channel migration was 2.5 m per year. The data presented here are significant for practical issues such as predicting channel migration rates for engineering and planning purposes, soil and water management.
Źródło:
Quaestiones Geographicae; 2016, 35, 1; 81-92
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis of the spatial and temporal changes on the Jakobshavn Glacier (Greenland) using remote sensing data
Autorzy:
Olszewska, Katarzyna
Borowiec, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/2055846.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
global warming
glaciers
ablation
glacier calving
remote sensing
Greenland
Opis:
This article presents the problem of climate warming and the effect of melting ice caps. The problem of climate warming is discussed in two stages. In the first stage, the factors affecting global warming are discussed in detail and the effects and risks of ablation extensively described. Analyses were conducted on data available online from NASA and Carbon Dioxide Information Analysis Center. The Greenland area (Jakobshavn Glacier) was selected to visualize glacier calving front changes. The analysis of changes was performed on the selected satellite images covering the summer period (June to September) provided by the Landsat program. Then, the changes in the position of the calving front of the Jakobshavn Glacier were visualized for the period 1985–2020, with a repeatability of every 5 years. Thus, our results addressed the challenges of environmental changes to remote sensing data processing. In addition to the visualization, a surface summary of these changes was presented in the study. The results were discussed in the context of climate change data processed by means of the GIS method. Furthermore, an analysis of the effects of greenhouse gases on glacier surface changes was performed. In summary, the results reveal that satellite imagery is an excellent source of data on which to visualize glacier calving rates, comparing individual layers showing the position of the glacier calving front and calculating the area of calved ice.
Źródło:
Geology, Geophysics and Environment; 2021, 47, 4; 187--201
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Error simulations of uncorrected NDVI and DCVI during remote sensing measurements from UAS
Autorzy:
Chiliński, Michał T.
Ostrowski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2037392.pdf
Data publikacji:
2014-06-25
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Remote sensing
vegetation index
digital camera
UAS
atmospheric correction
Opis:
Remote sensing from unmanned aerial systems (UAS) has been gaining popularity in the last few years. In the field of vegetation mapping, digital cameras converted to calculate vegetation index (DCVI) are one of the most popular sensors. This paper presents simulations using a radiative transfer model (libRadtran) of DCVI and NDVI results in an environment of possible UAS flight scenarios. The analysis of the results is focused on the comparison of atmosphere influence on both indices. The results revealed uncertainties in uncorrected DCVI measurements up to 25% at the altitude of 5 km, 5% at 1 km and around 1% at 0.15 km, which suggests that DCVI can be widely used on small UAS operating below 0.2 km.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2014, 18, 2; 35-45
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of old ecological hazards, oil seeps and contaminations using earth observation methods : spectral library for oil seep
Autorzy:
Smejkalová, E.
Bujok, P.
Pikl, M.
Powiązania:
https://bibliotekanauki.pl/articles/205040.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
remote sensing
oil contaminations
hydrocarbon seepage
spectral library
satellite
Opis:
The possibilities of remote sensing techniques in the field of the Earth surface monitoring and protection specifically for the problems caused by petroleum contaminations, for the mapping of insufficiently plugged and abandoned old oil wells and for the analysis of onshore oil seeps are described. Explained is the methodology for analyzing and detection of potential hydrocarbon contaminations using the Earth observation in the area of interest in Slovakia (Korňa) and in Czech Republic (Nesyt), mainly building and calibrating the spectral library for oil seeps. The acquisition of the in-situ field data (ASD, Cropscan spectroradiometers) for this purpose, the successful building and verification of hydrocarbon spectral library, the application of hydrocarbon indexes and use of shift in red-edge part of electromagnetic spectra, the spectral analysis of input data are clarified in the paper. Described is approach which could innovate the routine methods for investigating the occurrence of hydrocarbons and can assist during the mapping and locating the potential oil seep sites. Important outcome is the successful establishment of a spectral library (database with calibration data) suitable for further application in data classification for identifying the occurrence of hydrocarbons.
Źródło:
Archives of Environmental Protection; 2017, 43, 1; 3-10
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of Spectrum Sensing Parameters in Cognitive Radio Using Adaptive Genetic Algorithm
Autorzy:
Chatterjee, S.
Dutta, S.
Bhattacharya, P. P.
Roy, J. S.
Powiązania:
https://bibliotekanauki.pl/articles/308511.pdf
Data publikacji:
2017
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
adaptive genetic algorithm
bandwidth
cognitive radio
spectrum sensing
throughput
Opis:
Quality of service parameters of cognitive radio, like, bandwidth, throughput and spectral efficiency are optimized using adaptive and demand based genetic algorithm. Simulation results show that the proposed method gives better real life solution to the cognitive radio network than other known approach.
Źródło:
Journal of Telecommunications and Information Technology; 2017, 1; 21-27
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fotogrametria i teledetekcja w europejskich programach geinformacyjnych
Photogrammetry and remote sensing in European geoinformatic programmes
Autorzy:
Linsenbarth, A.
Powiązania:
https://bibliotekanauki.pl/articles/262537.pdf
Data publikacji:
2006
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
fotogrametria
teledetekcja
geoinformacja
INSPIRE
GMES
photogrammetry
remote sensing
geoinformation
Opis:
Polityka Unii Europejskiej musi się opierać na spójnych i aktualnych informacjach przestrzennych niezbędnych zarówno do nakreślenia polityki Wspólnoty Europejskiej, jak i realizacji postanowień wynikających z dyrektyw Wspólnoty. Dwa programy Unii Europejskiej wychodzą naprzeciw tym oczekiwaniom, a mianowicie program INSPIRE oraz program GMES. W artykule omówiono te programy ze szczególnym uwzględnieniem roli fotogrametrii i teledetekcji. Prace nad projektem programu INSPIRE dotyczącym Europejskiej Infrastruktury Danych Przestrzennych rozpoczęto pod koniec lat 90. W wyniku działania Grupy Ekspertów programu INSPIRE i prac kilku Grup Roboczych opracowano wstępne założenia programu INSPIRE. Wynikiem tych prac było opracowanie projektu dyrektywy INSPIRE, który 23 lipca 2004 roku został przekazany do Parlamentu i Rady Unii Europejskiej celem przeprowadzenia procesu legislacyjnego. W wyniku prac prowadzonych w obu tych ciałach powstał dokument prezentujący wspólne stanowisko Rady, który miał być poddany głosowaniu w czerwcu 2006 roku na posiedzeniu plenarnym Parlamentu Europejskiego. Zgodnie z tym dokumentem podstawowe źródło informacji o terenie stanowić mają ortofotomapy satelitarne bądź lotnicze. Program GMES (Global Monitoring of Environment and Security) realizowany przez Komisję Europejską i Europejską Agencję Kosmiczną dotyczy permanentnego monitorowania naszego kontynentu, a głównie użytkowania Ziemi i dużych aglomeracji miejskich. Główne źródło informacji w tym programie stanowić będą średnio- i wysokorozdzielcze zdjęcia satelitarne.
The policy of the European Union must be based on condense and up-to date spatial information, necessary both to create the policy of the European Union as well as to implement and monitor the resolutions resulting from the directives of the Union. Two programmes of the European Union meet these expectations. These are INSPIRE and GMES programme. This article presents these programmes, focussing of the role of photogrammetry and remote sensing. The work on the project of the INSPIRE programme, referring to the European Infrastructure of Spatial Data started at the end of 1990s. As the result of the activities of the Group of Experts of programme INSPIRE and several Working Groups, preliminary premises for the INSPIRE programme were made. The result of this work was making the project of the Directive INSPIRE, which, on 23rd July 2004 was submitted to the Parliament and Council of the European Union for the legislation process. As the result of the work done in both these bodies, a document was issued. The title of the document was: Common Statement of the Council. The term of voting is June 2006, at the plenary session of the European Parliament. According to this document, the basic source of terrain information should be satellite or airborne orthophotomaps. Programme GMES (Global Monitoring of Environment and Security) realized by the European Commission and European Space Agency refers to permanent monitoring of our continent and mainly the use of Earth and large city agglomerations. Main source of information in this programme will be medium and high resolution satellite images.
Źródło:
Geodezja / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2006, 12, 2/1; 291-301
1234-6608
Pojawia się w:
Geodezja / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High-resolution Direction of Arrival Estimation Method Based on Sparse Arrays with Minimum Number of Elements
Autorzy:
Mohammed, Jafar Ramadhan
Powiązania:
https://bibliotekanauki.pl/articles/1839475.pdf
Data publikacji:
2021
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
compressed sensing
direction of arrival
DOA
estimation
sparse array
Opis:
Regular fully filled antenna arrays have been widely used in direction of arrival (DOA) estimation. However, practical implementation of these arrays is rather complex and their resolutions are limited to the beamwidth of the array pattern. Therefore, higher resolution and simpler methods are desirable. In this paper, the compressed sensing method is first applied to an initial fully filled array to randomly select the most prominent and effective elements which are used to form the sparse array. To keep the dimension of the sparse array equal to that of the fully filled array, the first and the last elements were excluded from the sparseness process. In addition, some constraints on the sparse spectrum are applied to increase estimation accuracy. The optimization problem is then solved iteratively using the iterative reweighted l1 norm. Finally, a simple searching algorithm is used to detect peaks in the spectrum solution that correspond to the directions of the arriving signals. Compared with the existing scanned beam methods, such as the minimum variance distortionless response (MVDR) technique, and with subspace approaches, such as multiple signal classification (MUSIC) and ESPIRT algorithms, the proposed sparse array method offers better performance even with a lower number of array elements and in severely noisy environments. Effectiveness of the proposed sparse array method is verified via computer simulations.
Źródło:
Journal of Telecommunications and Information Technology; 2021, 1; 8-14
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High-resolution Direction of Arrival Estimation Method Based on Sparse Arrays with Minimum Number of Elements
Autorzy:
Mohammed, Jafar Ramadhan
Powiązania:
https://bibliotekanauki.pl/articles/1839489.pdf
Data publikacji:
2021
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
compressed sensing
direction of arrival
DOA
estimation
sparse array
Opis:
Regular fully filled antenna arrays have been widely used in direction of arrival (DOA) estimation. However, practical implementation of these arrays is rather complex and their resolutions are limited to the beamwidth of the array pattern. Therefore, higher resolution and simpler methods are desirable. In this paper, the compressed sensing method is first applied to an initial fully filled array to randomly select the most prominent and effective elements which are used to form the sparse array. To keep the dimension of the sparse array equal to that of the fully filled array, the first and the last elements were excluded from the sparseness process. In addition, some constraints on the sparse spectrum are applied to increase estimation accuracy. The optimization problem is then solved iteratively using the iterative reweighted l1 norm. Finally, a simple searching algorithm is used to detect peaks in the spectrum solution that correspond to the directions of the arriving signals. Compared with the existing scanned beam methods, such as the minimum variance distortionless response (MVDR) technique, and with subspace approaches, such as multiple signal classification (MUSIC) and ESPIRT algorithms, the proposed sparse array method offers better performance even with a lower number of array elements and in severely noisy environments. Effectiveness of the proposed sparse array method is verified via computer simulations.
Źródło:
Journal of Telecommunications and Information Technology; 2021, 1; 8-14
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatio-temporal dynamics of vegetation cover in North-West Algeria using remote sensing data
Autorzy:
Tayeb, Tayeb Si
Kheloufi, Benabdeli
Powiązania:
https://bibliotekanauki.pl/articles/92530.pdf
Data publikacji:
2019
Wydawca:
Oddział Kartograficzny Polskiego Towarzystwa Geograficznego
Tematy:
land cover
spatio-temporal dynamics
remote sensing
NDVI
Oranie
Opis:
Land cover change is the result of complex interactions between social and environmental systems which change over time. While climatic and biophysics phenomena were for a long time the principal factor of land transformations, human activities are today the origin of the major part of land transformation which affects natural ecosystems. Quantification of natural and anthropogenic impacts on vegetation cover is often hampered by logistical issues, including (1) the difficulty of systematically monitoring the effects over large areas and (2) the lack of comparison sites needed to evaluate the effect of the factors. The effective procedure for measuring the degree of environmental change due to natural factors and human activities is the multitemporal study of vegetation cover. For this purpose, the aim of this work is the analysis of the evolution of land cover using remote sensing techniques, in order to better understand the respective role of natural and anthropogenic factors controlling this evolution. A spatio-temporal land cover dynamics study on a regional scale in Oranie, using Landsat data for two periods (1984–2000) and (2000–2011) was conducted. The images of the vegetation index were classified into three classes based on Normalized Difference Vegetation Index (NDVI) values and analysed using image difference approach. The result shows that the vegetation cover was changed. An intensive regression of the woody vegetation and forest land resulted in -22.5% of the area being lost between 1984 and 2000, 1,271 km2 was converted into scrub formations and 306 km2 into bare soil. On the other hand, this class increased by around 45% between 2000 and 2011, these evolutions resulting from the development of scrub groups with an area of 1,875.7 km2.
Źródło:
Polish Cartographical Review; 2019, 51, 3; 117-127
2450-6974
Pojawia się w:
Polish Cartographical Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphotectonic control of the Białka drainage basin (Central Carpathians): Insights from DEM and morphometric analysis
Autorzy:
Wołosiewicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/100757.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Śląski. Wydział Nauk o Ziemi
Tematy:
morphometry
morphotectonics
Carpathians
remote sensing
morfometria
morfotektonika
Karpaty
teledetekcja
Opis:
The Białka river valley is directly related to a deep NNW-SSE oriented fault zone. According to the results of previous morphometric analyses, the Białka drainage basin is one of the most tectonically active zones in the Central Carpathians. It is also located within an area of high seismic activity. In this study Digital Elevation Model (DEM) based, morphometric analyses were used to investigate the morphotectonic conditions of the watershed. The results reveal the relationships between the main tectonic feature and the landforms within the research area. The lineaments, as obtained from the classified aspect map, seem to coincide with the orientation of the main structures as well as the trends revealed by the theoretical Riedel-Skempton shear model. Base-level and isolong maps support the conclusion that the Białka and Biały Dunajec fault zones exert a strong influence on the morphology of the adjacent area.
Źródło:
Contemporary Trends in Geoscience; 2016, 5, 1; 61-82
2299-8179
Pojawia się w:
Contemporary Trends in Geoscience
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Application of Remote Sensing Techniques and Spectral Analyzes to Assess the Content of Heavy Metals in Soil – A Case Study of Barania Góra Reserve, Poland
Autorzy:
Sobura, Szymon
Widłak, Małgorzata
Hejmanowska, Beata
Muszyńska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2174645.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
remote sensing
heavy metals
Sentinel-2
soil
spectral indices
Opis:
The understanding of the spatial and temporal dynamics of farmland processes is essential to ensure the proper crop monitoring and early decision making needed to support efficient resource management in agriculture. By creating appropriate crop management strategies, one can increase harvest efficiency while reducing costs, waste, chemical spraying, and inhibiting the impact of biotic and abiotic factors on crop stress. Only reliable spatial information makes it possible to comprehend the influence of various factors on the environment. The main objective of the research presented in the paper was to assess the possibility of using maps of vegetation and soil indices, such as NDVI, SAVI, IRECI, CIred-edge, PSRI and HMSSI, calculated on the basis of images from the Sentinel-2 satellite, to qualitatively determine the increased amount of heavy metals in the soil in the areas of small agricultural plots around the Barania Góra nature reserve in Poland. The conducted pilot project shows that the spectral indices: NDVI, SAVI, IRECI, CIred-edge, PSRI, and HMSSI, calculated on the basis of images from Sentinel-2, have the potential to assess the content of nickel zinc, chromium and cobalt in the soil on agricultural plots. However, the confirmation of the obtained results requires continuation of the research.
Źródło:
Geomatics and Environmental Engineering; 2022, 16, 4; 187--213
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remote sensing monitoring of irrigated areas from 1972 to 2018 in the Guigou Plain, Middle Atlas, Morocco
Autorzy:
El-Bouhali, Abdelaziz
Cotonnec, Adeline
Lebaut, Sébastien
Amyay, Mhamed
Thomas, Alban
El Ouazani Ech-Chahdi, Khadija
Laouanne, Mohamed
Gille, Emmanuel
Powiązania:
https://bibliotekanauki.pl/articles/2203560.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
irrigated crops
land use
Middle Atlas
Morocco
remote sensing
Opis:
The cartography and quantification of irrigated fields in the context of decreasing rainfall constitute a key element for water resources management. Therefore, in this context, the use of remote sensing methods applied to Landsat-type images with a high spatial resolution for monitoring the changes in land use in general and irrigated crops, in particular, is highly relevant. This paper aims to present a method for mapping spatial and temporal changes in irrigated parcels in the Guigou Plain, located in the central Middle Atlas, based on Landsat images and fieldwork. For the years 1985, 1998, 2010 and 2018, the use of a supervised classification method based on the principle of machine learning, fed by precise field surveys, has made it possible to highlight a significant extension of irrigated areas to the expense of pastureland and rainfed crops. Over the entire period under consideration, the results obtained with good precision (98.5% overall accuracy) showed that the area under irrigated crops has increased from approximately 699 ha to 3988 ha, i.e. an increase of 570%. The corollary of this increase is strong pressure on the water resource, especially groundwater. This information on the total extension of irrigated plots can be taken as a reference in the perspective of reasoned management of water resources in the sector.
Źródło:
Journal of Water and Land Development; 2023, 56; 249--261
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Employing a Savitzky-Golay Filtering Stage to Improve Performance of Spectrum Sensing in CR Applications Concerning VDSA Approach
Autorzy:
Angrisani, L.
Capriglione, D.
Cerro, G.
Ferrigno, L.
Miele, G.
Powiązania:
https://bibliotekanauki.pl/articles/220369.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cognitive radio
smoothing filter
VDSA
spectrum sensing
spectral measurements
Opis:
In this paper, a filtering stage based on employing a Savitzky-Golay (SG) filter is proposed to be used in the spectrum sensing phase of a Cognitive Radio (CR) communication paradigm for Vehicular Dynamic Spectrum Access (VDSA). It is used to smooth the acquired spectra, which constitute the input for a spectrum sensing algorithm. The sensing phase is necessary, since VDSA is based on an opportunistic approach to the spectral resource, and the opportunities are represented by the user-free spectrum zones, to be detected through the sensing phase. Each filter typology presents peculiarities in terms of its computational cost, de-noising ability and signal shape reconstruction. The SG filtering properties are compared with those of the linear Moving Average (MA) filter, widely used in the CR framework. Important improvements are proposed.
Źródło:
Metrology and Measurement Systems; 2016, 23, 2; 295-308
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in a hydrographic network of the Słowiński National Park in terms of photogrammetric analyses
Autorzy:
Góraj, Maciej
Kucharski, Marcin
Karsznia, Krzysztof
Karszania, Izabela
Chormański, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/2108289.pdf
Data publikacji:
2018-01-04
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Protected areas
Morphology
Wetlands
Słowiński National Park
Remote Sensing
Opis:
The main objective of this study is to evaluate the changes in the hydrographic network of Słowiński National Park. The authors analysed the changes occurring in the drainage network due to limited maintenance in this legally protected natural area. To accomplish this task, elaborations prepared on the basis of aerial photographs were used: an orthophoto map from 1996, hyperspectral imaging from June 2015, and a digital terrain model based on airborne laser scanning (ALS) from June 2015. These spatial data resources enabled the digitisation of the water courses for which selected hydro-morphological features had been defined. As a result of analysing the differences of these features, a quality map was elaborated which was then subjected to interpretation, and the identified changes were quantified in detail.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2017, 21, 4; 197-204
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł

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