Skocz do pozycji: 1.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 2.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 3.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 4.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 5.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 6.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 7.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 8.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 9.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 10.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 11.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 12.

Tytuł:

Początki teledetekcji środowiska w Polsce
Origin of remote sensing of environment in Poland

Autorzy:

Olędzki, J. R.

Powiązania:

https://bibliotekanauki.pl/articles/132194.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Geograficzne

Tematy:

teledetekcja
Pracownia Interpretacji Zdjęć Lotniczych
Klub Teledetekcji Środowiska PTG
remote sensing
Laboratory of Aerial Photos Interpretation
remote sensing of Environment Club PGS

Opis:

Years go by. Time obliterates the memory of people and events that they initiated or inspired. Events, being fruits of efforts made by individuals, frequently driven by fascination, necessity or even chance, build the history of different spheres of social life, and in the case which is of interest to us – of the discipline which is now known as remote sensing. This sketch aims to outline the origin of remote sensing in Poland and the milestones in its development during the past five decades. It does not intend to offer a detailed substantive analysis of various studies, directions of research or numerous practical applications. In the sketch’s final part, the programme of training specialists in geinformatics and remote sensing offered at the University of Warsaw is shortly discussed. In 2009, 45 years passed since the conference of geographers and specialists in aerial photographs interpretation which was held in Warsaw, at the Institute of Geography, Faculty of Biology and Earth Sciences of the University of Warsaw. The conference was organised by the Laboratory of Aerial Photographs Interpretation at the Chair of Regional Geography of the Institute of Geography. The aim of the meeting – which took place in May 1964 – was to familiarise the participants with the findings of research and didactic work at academic centres abroad and at home, in order to develop a new and uniform curriculum for all geography specialisations in Poland. In addition to that, directions of research work conducted by individual laboratories of aerial photograph interpretation were also discussed. The first classes in remote sensing were conducted at geographical studies at the University of Warsaw, specialisation of regional geography, as early as the academic year 1960/1961. Similar classes were also held at the University of Wrocław, Adam Mickiewicz University in Poznań and Maria Curie Skłodowska University in Lublin. In Poland, aerial photography started to be in use from the very first years of independence. In 1921-1924, photoplans on the scale of 1:10 000 covering an area of 3000 km² were made for the Polish-Soviet border areas. 1930 saw the setting up of a specialised enterprise, FOTOLOT. The establishment of the Polish Photogrammetic Society in 1930 was a momentous event as its activity played an important role in the development of photogrammetric methods based on aerial photographs, catering to different needs of the national economy. The most significant achievements in the years 1920-1939 included: a 1931 study by Roman Gryglaszewski, which described the methodology of taking and interpreting aerial photographs for land improvement works on the rivers of the Polesie region, and a 1935 study by Roman Feliński on the analysis of cities, villages and spas in the settlement organisation of the country, in which he highlighted the role of aerial photographs in studies on the country’s spatial development. In 1937-1939, aerial photographs were used in land classification and forestry. We should also mention the work of the Polish geologist Stanisław Zuber, who conducted geological surveys on the Caspian Sea and was a pioneer of using aerial photographs in geology and geotectonic research. In the inter-war period, the Lvov Polytechnic Professor Kasper Weigl, organiser of aerial photography courses, was the most eminent personality in the teaching of remote sensing. Some aerial photographs taken by the German army survived until today from the times of the Second World War; one of such photographs is an aerial photograph of Warsaw taken on 5 August 1944, at the very beginning of the Warsaw Uprising. In it, one can see areas engulfed by fi res and military operations, and the area of the ghetto, razed to the ground, in the form of a light tone. The first aerial photographs after the Second World War were taken already in 1945. The first years after the War, and later, until the end of the 1950s, were not easy for the development of remote sensing in Polish geography despite the systematic character of aerial photography of Poland at the time. In 1957, Bogodar Winid set a long-term plan for himself to change the neutral to negative approach of the geographers’ community to a new research methodology – interpretation of aerial photographs. The plan included familiarisation with the theoretical foundations of photointerpretation, development of materials for this type of classes, gradual training of specialists, gradual introduction of classes in interpretation of aerial photographs for students specialising in regional geography, and later in other specialisations and disciplines, conducting research in this field, and starting cooperation with state bodies and institutions to familiarise them with the socalled “aeromethods”. Looking at this programme fifty years later, we can say that – probably mostly owing to Bogodar Winid’s outstanding drive and energy – this programme was implemented in full. In 1966, interpretation of aerial photographs was made a compulsory subject in geographical studies. To coordinate the development of photointerpretation, on 23 October 1964 a specialised body, the Photointerpretation Committee, was set up as part of the Polish Geographical Society (PTG). A specialised series entitled Fotointerpretacja w geografii [Photointerpretation in geography] was initiated for scientific exchange purposes; currently, it is known as the Teledetekcja Środowiska [Remote sensing] series. By the end of 2008, a total of 40 volumes with 480 papers was published. The Photointerpretation Committee, later transformed into the Remote Sensing Club of the Polish Geographical Society, in the years 1964-2009 organised 19 nation-wide conferences on issues of photointerpretation and remote sensing. The range of remote sensing applications was expanded to other areas ane institutions owing to cooperation with government institutions, as a result of which OPOLIS, the Centre for Processing Aerial Photographs and Satellite Images, was set up as a part of the Institute of Geodesy and Cartography.

Źródło:

Teledetekcja Środowiska; 2009, 41; 5-22
1644-6380

Pojawia się w:

Teledetekcja Środowiska

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 13.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 14.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 15.

Tytuł:

Energy-based spectrum sensing with copulas for cognitive radios

Autorzy:

Ilgin, F. Y.

Powiązania:

https://bibliotekanauki.pl/articles/201847.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

energy-based sensing
cognitive radio
copula theory
Neyman Pearson
spectrum management

Opis:

In this study, an energy-based spectrum sensing method combined with copula theory is proposed for cognitive radio systems. In the proposed spectrum sensing model, cognitive radio users first make their own local spectrum decision with energy-based spectrum sensing. Then, they forward their decision to the fusion center. In the fusion center, this decision is compared with the threshold value determined by copula theory and global spectrum decision is made. The test statistic at the fusion center were obtained with the Neyman Pearson approach. Thus, the fusion rule was created for the fusion center and necessary simulation studies were performed. According to the results of the simulation studies, the proposed detection method showed better results than the traditional energy based detection method.

Źródło:

Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 4; 829-834
0239-7528

Pojawia się w:

Bulletin of the Polish Academy of Sciences. Technical Sciences

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 16.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 17.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 18.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 19.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 20.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 21.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 22.

Tytuł:

Biofilm tworzony przez grzyby - struktura, quorum sensing, zmiany morfogenetyczne, opornosc na leki
Biofilm caused by fungi - structure, quorum sensing, morphogenetic changes, resistance to drugs

Autorzy:

Nowak, M
Kurnatowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/837264.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

Candida albicans
zjawisko quorum sensing
biofilmy grzybicze
grzyby
biofilmy
lekoopornosc
leki przeciwgrzybicze
struktura
zmiany morfogenetyczne

Źródło:

Annals of Parasitology; 2009, 55, 1; 19-25
0043-5163

Pojawia się w:

Annals of Parasitology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 23.

Tytuł:

Biofilm tworzony przez grzyby - struktura, quorum sensing, zmiany morfogenetyczne, oporność na leki
Biofilm caused by fungi - structure, quorum sensing, morphogenetic changes, resistance to drugs

Autorzy:

Nowak, M.
Kurnatowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/2143486.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

Candida albicans
zjawisko quorum sensing
biofilmy grzybicze
grzyby
biofilmy
lekoopornosc
leki przeciwgrzybicze
struktura
zmiany morfogenetyczne

Opis:

Formation of fungal biofilms in patients with implanted biomedical prosthesis constitutes very serious clinical problems. The biofilm can lead to dysfunction of implanted material and can be a reservoir for chronic and systemic infections. Numerous investigations demonstrated differences in quantity and structure of biofilms that had been formed by various species of fungi belonged to Candida genus. Stages of biofilm formations had been examined carefully in in vitro conditions. Biofilm formation begin with adhesion of fungi to the surface, microcolonies are formed subsequently. At the end of the process, extracellular material is excreted, and its formula, that is various in different fungi Candida species, contribute to its resistance to antifungal drugs. Farnesol and tyrosol are two quorum-sensing molecules. They are acting inversely, regulating formation of „germ tubes” and influencing morphogenetic conversion between yeast and filamentous forms, which plays a very important role in pathogenicity and formation of biofilm. Drug resistance of fungi from Candida has been shown to create a very important clinical problem. Many experiments in vitro confirm significantly lower activity of antifungal drugs toward Candida biofilm than toward Candida, in the form of planctonic cells. Surprisingly, some non-steroidal anti-inflammatory drugs can inhibit biofilm formation.

Źródło:

Wiadomości Parazytologiczne; 2009, 55, 1; 19-25
0043-5163

Pojawia się w:

Wiadomości Parazytologiczne

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 24.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 25.

Tytuł:

Remote sensing applications - new vistas for measurement and control

Autorzy:

Zaremba, M.

Powiązania:

https://bibliotekanauki.pl/articles/384259.pdf

Data publikacji:

2008

Wydawca:

Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów

Tematy:

remote sensing
satellite imagery
lidar
image processing
data fusion
distributed control
modeling and simulation

Opis:

The field of remote sensing is an area of science and technology that has undergone rapid development in recent years. This paper focuses primarily on how to exploit the capabilities made available by remote sensing and how to put them to use by combining them with a sys-temic approach to design and analysis in various measurement and control applications. The emphasis is placed on high-resolution satellite and Lidar sensors – the most prevalent remote sensing technologies. Following the presentation of some general issues related to low- and high-level processing of remote sensing data, such as data dimensionality reduction, data fusion, and change detection, the paper provides examples of control-related applications of remote sensing technologies. It is argued that successful exploitation of new generations of remote sensing technologies will require extensive development of new algorithms based on a variety of approaches, such as machine vision, statistical learning, and artificial intelligence.

Źródło:

Journal of Automation Mobile Robotics and Intelligent Systems; 2008, 2, 3; 3-12
1897-8649
2080-2145

Pojawia się w:

Journal of Automation Mobile Robotics and Intelligent Systems

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 26.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 27.

Tytuł:

Inversion of Remote Sensing Data Using Multiple Ratios of Spectral Radiation Intensities and Neural Networks

Autorzy:

Cięszczyk, S.

Powiązania:

https://bibliotekanauki.pl/articles/1032310.pdf

Data publikacji:

2017-06

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

remote sensing
infrared spectrometers
infrared spectra
computer modelling and simulation

Opis:

The article presents a method for determining the content and temperature on the basis of spectra from remote measurements. The technique uses measurements of a high resolution radiation spectrum that allows the visibility of the individual rotational lines of gases such as CO₂, used here in the range of 2470-2495 cm¯¹. At the same time a new algorithm is applied of pre-processing the spectrum, involving the use of multiple ratios of intensity at several wavenumbers as input to an inverse model based on neural networks. Due to it, the dimensionality of the input can significantly be reduced. Additionally, the data interpreted do not have to be measured in units of spectral radiance. Thus only the calibration of the sensitivity of the spectrometer at various wavelengths is required. The neural models were constructed on the basis of data from the simulation. The proposed method works with a uniform layer of radiating gas for determining the temperature and CO₂ content. For a non-uniform layer it is possible to determine the line-of-sight temperature profile and average gas content. The method can be extended to different spectral ranges and to other gases present in substantial quantities in the exhaust gases of various processes.

Źródło:

Acta Physica Polonica A; 2017, 131, 6; 1454-1459
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 28.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 29.

Tytuł:

The remote sensing method of forest fire danger rating categorization

Autorzy:

Mycke-Dominko, Małgorzata
Kwiatkowska, Joanna M.

Powiązania:

https://bibliotekanauki.pl/articles/2029439.pdf

Data publikacji:

2004-06-01

Wydawca:

Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych

Tematy:

forest fire danger rating classification
remote sensing as used in research

Opis:

The article presents the use of satellite images in the determination of forest fire danger rating categories. The assessment was carried out based on images from the LANDSAT TM, IKONOS and NOAA satellites, with the finding that the LANDSAT TM images are the most useful. A new solution proposed is to make forest fire danger rating categories refer to forest ranger sub-districts, what gives the forest service greater control over forest fire prevention activities. Forest fire danger assessment was done taking into account remote sensing indices such as the NDVI, TNDVI, and IHT, as well by the analysis of the spatial distribution and the number of fires in the previous six years. In accordance with the Polish State Forest Classification System, three classes were specified: 1 - high fire danger, 2 - moderate fire danger, 3 - low fire danger.

Źródło:

Miscellanea Geographica. Regional Studies on Development; 2004, 11; 359-362
0867-6046
2084-6118

Pojawia się w:

Miscellanea Geographica. Regional Studies on Development

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 30.

Tytuł:

Quenching of acyl-homoserine lactone-dependent quorum sensing by enzymatic disruption of signal molecules

Autorzy:

Czajkowski, Robert
Jafra, Sylwia

Powiązania:

https://bibliotekanauki.pl/articles/1040606.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

acyl-homoserine lactones
quorum quenching
AHL degradation
quorum sensing

Opis:

Many Gram-positive and Gram-negative bacteria communicate using small diffusible signal molecules called autoinducers. This process, known as quorum sensing (QS), links cell density to the expression of genes as diverse as those associated with virulence factors production of plant and animal pathogens, bioluminescence, antibiotic production, sporulation or biofilm formation. In Gram-negative bacteria, this communication is mainly mediated by N-acyl-homoserine lactones (AHLs). It has been proven that inactivation of the signal molecules attenuates many of the processes controlled by QS. Enzymatic degradation of the signal molecules has been amply described. Two main classes of AHL-inactivating enzymes were identified: AHL lactonases which hydrolyse the lactone ring in AHLs, and AHL acylases (syn. AHL amidases) which liberate a free homoserine lactone and a fatty acid. Recently, AHL oxidoreductase, a novel type of AHL inactivating enzyme, was described. The activity of these enzymes results in silencing the QS-regulated processes, as degradation products cannot act as signal molecules. The ability to inactivate AHL (quorum quenching, QQ) might be useful in controlling virulence of many pathogenic bacteria.

Źródło:

Acta Biochimica Polonica; 2009, 56, 1; 1-16
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 31.

Tytuł:

Application of satellite remote sensing in investigation of environment in Poland

Autorzy:

Ciołkosz, Andrzej
Białousz, Stanisław

Powiązania:

https://bibliotekanauki.pl/articles/703300.pdf

Data publikacji:

2008

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Remote Sensing Centre
land use
image maps
NDVI
yield forecast
monitoring of Baltic

Opis:

The Remote Sensing Centre has been set up within the Institute of Geodesy and Cartography shortly after launching the first environmental satellite. The main task of the Centre was to use satellite images in research of environment. The Landsat images have been used by the Centre to elaborate the first maps of land use in Poland. Satellite images have also been used to assess the forest damage in Sudety Mountains, elaboration of the satellite maps, assess of the air pollution in the country and elaboration of the soil data bases for Poland. Satellite images acquired in microwaves have been used to map a flood extent in Odra River Valley and to estimate damage caused by the flood. The most diverse application satellite images found in agriculture. They were used for assessment of the stage of crop development, crop yield and production of the cereals in Poland. Several other scientific institutes have also used satellite images in their investigation. One of them was the Institute of Oceanology. It has used satellite images for the Baltic ecosystem monitoring.

Źródło:

Nauka; 2008, 3
1231-8515

Pojawia się w:

Nauka

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 32.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 33.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 34.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 35.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 36.

Tytuł:

Remote sensing measurements of lead concentrations in plants

Autorzy:

Zagajewski, Bogdan

Powiązania:

https://bibliotekanauki.pl/articles/2028476.pdf

Data publikacji:

2000-06-01

Wydawca:

Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych

Źródło:

Miscellanea Geographica. Regional Studies on Development; 2000, 9; 267-282
0867-6046
2084-6118

Pojawia się w:

Miscellanea Geographica. Regional Studies on Development

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 37.

Tytuł:

International remote sensing experiment: "Telegeo-87-Narew"

Autorzy:

Olędzki, Jan R.

Powiązania:

https://bibliotekanauki.pl/articles/1985846.pdf

Data publikacji:

1990-06-01

Wydawca:

Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych

Źródło:

Miscellanea Geographica. Regional Studies on Development; 1990, 4; 243-246
0867-6046
2084-6118

Pojawia się w:

Miscellanea Geographica. Regional Studies on Development

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 38.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 39.

Tytuł:

Teren uzmysłowiony
Sensing the Fieldwork

Autorzy:

Masalon, Monika
Kulińska, Aleksandra
Bruna, Sylwia

Powiązania:

https://bibliotekanauki.pl/articles/694160.pdf

Data publikacji:

2018-11-20

Wydawca:

Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego

Opis:

This text is an attempt to seek answers about field and its multi-sensory experience in research work and social activities. The work experience of Lab of Social Initiatives DYM was thus collected and described in order to define two categories of the field and the process of its perception.

Źródło:

Etnografia. Praktyki, Teorie, Doświadczenia; 2018, 4; 213-219
2392-0971
2543-9537

Pojawia się w:

Etnografia. Praktyki, Teorie, Doświadczenia

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 40.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 41.

Tytuł:

An analysis of flooding coverage using remote sensing within the context of risk assessment

Autorzy:

Solovey, Tatiana

Powiązania:

https://bibliotekanauki.pl/articles/94266.pdf

Data publikacji:

2019

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

Sentinel-2
Remote Sensing
flood mapping
Water Indexes
teledetekcja
mapowanie powodzi
wskaźnik wody

Opis:

Results of research of the identification of flooding as a result of groundwater table fluctuations on the example of the valley of the River Vistula, with the use of multi-spectral Sentinel-2 images from the years 2017-2018 are presented. An analysis of indexes of water use, calculated on the basis of green, red and shortwave infrared (SWIR) bands, for extraction of water objects and flooded areas was carried out. Based on the analyses conducted, a mapping method was developed, using three water indexes (MNDWI Modified Normalised Difference Water Index, NDTI Normalised Difference Index and NDPI Normalised Difference Pond Index). Results show that the 10 metre false colour composite R_NDTIG_NDPIB_MNDWI obtained significantly improved submerged extractions more than did individual water indexes. Moreover, the 10-m-images of MNDWI and NDPI, obtained by the sharpening High Pass Filter (HPF), may represent more detailed spatial information on floods than the 20-m-MNDWI and NDPI, obtained from original images.

Źródło:

Geologos; 2019, 25, 3; 241-248
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 42.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 43.

Tytuł:

Application of Remote Sensing for Temperature Monitoring: the Technique for Land Surface Temperature Analysis

Autorzy:

Laosuwan, T.
Gomasathit, T.
Rotjanakusol, T.

Powiązania:

https://bibliotekanauki.pl/articles/123648.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

remote sensing
Landsat-8 OLI/TIR data
land surface temperature

Opis:

This research aimed to present the technique for land surface temperature analysis with the data from Landsat-8 Operational Land Imager (OLI) /Thermal Infrared Sensors (TIR) in Meuang Maha Sarakham District, Maha Sarakham Province, Northeast Thailand. The research was conducted as following three steps: 1) Collecting the satellite data in thermal infrared band from Landsat-8 TIR satellite to adjust the value of Top of Atmosphere (ToA) Reflectance and then analyzing the land Surface temperature 2) Collecting multi-band data from Landsat-8 OLI satellite to adjust the value of Top of Atmosphere (ToA) Reflectance and then analyzing values of Normalized Difference Vegetation Index (NDVI), Fractional Vegetation Cover (FVC) and Land surface Emissivity (LSE) 3) Bringing the results of 1) and 2) to analyze the land surface temperature with split window algorithm. The research results indicated that the analysis of the data from Landsat-8 OLI/TIR satellites in 18 March 2015 indicated a mean temperature of 33.57 °C.

Źródło:

Journal of Ecological Engineering; 2017, 18, 3; 53-60
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 44.

Tytuł:

Deep Learning-based SNR Estimation for Multistage Spectrum Sensing in Cognitive Radio Networks

Autorzy:

Jeevangi, Sanjeevkumar
Jawaligi, Shivkumar
Patil, Vilaskumar

Powiązania:

https://bibliotekanauki.pl/articles/2174451.pdf

Data publikacji:

2022

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

cognitive radio
improved NMF
LU-SLNO system
optimized CNN
spectrum sensing

Opis:

Vacant frequency bands are used in cognitive radio (CR) by incorporating the spectrum sensing (SS) technique. Spectrum sharing plays a central role in ensuring the effectiveness of CR applications. Therefore, a new multi-stage detector for robust signal and spectrum sensing applications is introduced here. Initially, the sampled signal is subjected to SNR estimation by using a convolutional neural network (CNN). Next, the detection strategy is selected in accordance with the predicted SNR levels of the received signal. Energy detector (ED) and singular value-based detector (SVD) are the solutions utilized in the event of high SNR, whilst refined non-negative matrix factorization (MNMF) is employed in the case of low SNR. CNN weights are chosen via the Levy updated sea lion optimization (LU-SLNO) algorithm inspired by the traditional sea lion optimization (SLNO) approach. Finally, the outcomes of the selected detectors are added, offering a precise decision on spectrum tenancy and existence of the signal.

Źródło:

Journal of Telecommunications and Information Technology; 2022, 4; 21--32
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 45.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 46.

Tytuł:

Statistical process control of commercial force-sensing resistors

Autorzy:

Palacio Gómez, Carlos Andrés
Paredes-Madrid, Leonel
Garzon, Andrés Orlando

Powiązania:

https://bibliotekanauki.pl/articles/2173875.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

force sensing resistors
FSR
pressure sensor
statistical process control
hysteresis error
drift error

Opis:

The manufacturing and characterization of polymer nanocomposites is an active research trend nowadays. Nonetheless, statistical studies of polymer nanocomposites are not an easy task since they require several factors to consider, such as: large amount of samples manufactured from a standardized procedure and specialized equipment to address characterization tests in a repeatable fashion. In this manuscript, the experimental characterization of sensitivity, hysteresis error and drift error was carried out at multiple input voltages () for the following commercial brands of FSRs (force sensing resistors): Interlink FSR402 and Peratech SP200-10 sensors. The quotient between the mean and the standard deviation was used to determine dispersion in the aforementioned metrics. It was found that a low mean value in an error metric is typically accompanied by a comparatively larger dispersion, and similarly, a large mean value for a given metric resulted in lower dispersion; this observation was held for both sensor brands under the entire range of input voltages. In regard to sensitivity, both sensors showed similar dispersion in sensitivity for the whole range of input voltages. Sensors’ characterization was carried out in a tailored test bench capable of handling up to 16 sensors simultaneously; this let us speed up the characterization process.

Źródło:

Metrology and Measurement Systems; 2022, 29, 3; 469--481
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 47.

Tytuł:

An Efficient Cooperative Spectrum Sensing Method Using Renyi Entropy Weighted Optimal Likelihood Ratio for CRN

Autorzy:

Shrote, Sandip B.
Poshattiwa, Sadhana D.

Powiązania:

https://bibliotekanauki.pl/articles/24200748.pdf

Data publikacji:

2023

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

cognitive radio
eigen statistics
optimal weight
signal energy
spectrum sensing

Opis:

The main concept behind employing cognitive radio is to enable secondary users (SUs) or unlicensed users to utilize the available spectrum. Spectrum sensing methods detect the existence of primary users (PUs) and have become the main topic of research in the CRN industry and in academia. This paper proposes a new framework based on the Adam gradient descent (Adam GD) algorithm to develop a spectrum sensing mechanism used in CRNs and detecting the availability of free channels. The signal's components are extracted from the received signal and the spectrum is searched for availability which is detected through a fusion center using the proposed algorithm. The proposed Adam GD algorithm attains the maximum detection probability rate and the minimum false alarm probability of 0.71 and 0.39, respectively, for a Rayleigh channel.

Źródło:

Journal of Telecommunications and Information Technology; 2023, 3; 41--48
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 48.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 49.

Tytuł:

Remote sensing techniques for tracking changes caused by illegal gold mining in Madre de Dios, Peru

Autorzy:

Adamek, Katarzyna
Lupa, Michał
Zawadzki, Mateusz

Powiązania:

https://bibliotekanauki.pl/articles/1955015.pdf

Data publikacji:

2021-12-10

Wydawca:

Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych

Tematy:

environmental monitoring
geospatial analysis
South America
remote sensing
Peru

Opis:

Illegal extraction of gold has grown to be a problem in many countries, causing the degradation of the environment. The main purpose of this paper is to investigate changes in tree cover and surface pollution. The development of a mine site has been observed and analysed with images acquired from Landsat and the Sentinel missions. The results of the study showed changes in the state of the environment, strongly suggesting the possibility of ongoing pyrite weathering processes and the transportation of clay materials down watercourses, which can cause not only the further deterioration of the environment but also slow down the natural regeneration of the forest. In addition, research has found disturbing changes in vegetation, showing a loss of tree cover in the Amazon Rainforest as high as 17%. The validity of using remote sensing methods to observe the development of individual mining sites and their characteristics was confirmed.

Źródło:

Miscellanea Geographica. Regional Studies on Development; 2021, 25, 4; 205-212
0867-6046
2084-6118

Pojawia się w:

Miscellanea Geographica. Regional Studies on Development

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 50.

Tytuł:

Image compression and encryption algorithm with wavelet-transform-based 2D compressive sensing

Autorzy:

Fan, Jing-Hui
Liu, Xian-Bao
Chen, Yan-Bin

Powiązania:

https://bibliotekanauki.pl/articles/175122.pdf

Data publikacji:

2019

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

wavelet transform
compressive sensing
chaos scrambling
image encryption
image compression

Opis:

By combining a wavelet transform with chaos scrambling, an image compression and encryption algorithm based on 2D compressive sensing is designed. The wavelet transform is employed to obtain the sparse representation of a plaintext image. The sparse image is measured in two orthogonal directions by compressive sensing. Then, the result of 2D compressive sensing is confused by the Arnold transform and the random pixel scrambling. The combination of four-dimensional chaos and logistic map is exploited to generate the first row of the key-controlled circulant matrix. The proposed algorithm not only carries out image compression and encryption simultaneously, but also reduces the consumption of the key by controlling the generation of measurement matrix. Experimental results reveal that the proposed image compression and encryption algorithm is resistant to noise attacks with good compression performance and high key sensitivity.

Źródło:

Optica Applicata; 2019, 49, 3; 461-472
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce