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Wyszukujesz frazę "processing methods" wg kryterium: Wszystkie pola


Tytuł:
Determining rock pore space using image processing methods
Autorzy:
Mazurkiewicz, Ł.
Młynarczuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/184751.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
porosity
image analysis
mathematical morphology
Opis:
This paper presents the possibilities of using image processing for determining effective porosity in carbonate and terrigenous rocks. For the purpose of the research, an algorithm was created, which automatically determines the percentage of pore space, based on the analysis of video sequences registered with the use of a microscope. Up to this point stereological research used for describing rock porosity was conducted manually, which is both troublesome and time consuming. The proposed algorithm uses a series of transformation operations such as: non-context operations, contextual operations and morphological transformations. The presented algorithm was tested on video sequences of thin sections of carbonates from Buszewo and Kościan, and sandstones from Dobrzyca and Solec. The obtained results show, that the method of automatic video sequence analysis used for detection and measurement of porosity leads to satisfying results.
Źródło:
Geology, Geophysics and Environment; 2013, 39, 1; 45-54
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovative waste processing methods in the agricultural and food industry
Autorzy:
Wolf, W.
Powiązania:
https://bibliotekanauki.pl/articles/105926.pdf
Data publikacji:
2014
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
wastewater
wastewater characteristics
agri-food industry
wastewater treatment methods
sewage
agro-industry
ścieki
charakterystyka ścieków
przemysł rolno-spożywczy
metody oczyszczania ścieków
przemysł rolniczy
Opis:
This article provides the comprehensive characteristics of wastewater, including both its classification as well as a description of how the pollutant load is determined, with regard to agro-food industry wastewater. Treatment methods for wastewater from this industry have also been proposed in relation to the main disadvantages and benefits of different technologies.
Źródło:
Acta Innovations; 2014, 11; 37-40
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image Processing Methods for Diagnostic and Simulation Applications in Cardiology
Autorzy:
Skurski, A.
Borzęcki, M.
Balcerzak, B.
Kamiński, M.
Napieralski, A.
Kasprzak, J. D.
Lipiec, P.
Powiązania:
https://bibliotekanauki.pl/articles/397963.pdf
Data publikacji:
2012
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
kardiologia
echokardiografia
ECHO
przetwarzanie obrazów
symulacja
USG
cardiology
echocardiography
image processing
simulation
Opis:
The paper describes two particular applications of image processing for the purpose of analysis and simulation in the field of cardiology. The authors describe a method which allows for combining the 2D image obtained in ECHO examination, and a 3D model of heart, extracted from a set of CT slices. The fused image provides an intuitive view on the contractual function of heart, by overlaying the bull's eye diagram on the model of left ventricle. By preserving the spatial information, it is possible to accurately point the location of areas with impaired contractual function. Another method described by the authors, displays the use of the CT volume for simulation of echocardiography images for purpose of training application. A simple approach based on pixel brightness adaptation is used to provide images of sufficient training quality. At the same time authors highlight the issues of storage and run-time memory requirement of such application, and suggest a method of reducing the working set size.
Źródło:
International Journal of Microelectronics and Computer Science; 2012, 3, 4; 146-151
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of data pre-processing methods for sentiment analysis of reviews
Autorzy:
Parlar, Tuba
Ozel, Selma
Song, Fei
Powiązania:
https://bibliotekanauki.pl/articles/305513.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
data pre-processing
feature selection
sentiment analysis
text classification
Opis:
The goals of this study are to analyze the effects of data pre-processing methods for sentiment analysis and determine which of these pre-processing methods (and their combinations) are effective for English as well as for an agglutinative language like Turkish. We also try to answer the research question of whether there are any differences between agglutinative and non-agglutinative languages in terms of pre-processing methods for sentiment analysis. We find that the performance results for the English reviews are generally higher than those for the Turkish reviews due to the differences between the two languages in terms of vocabularies, writing styles, and agglutinative property of the Turkish language.
Źródło:
Computer Science; 2019, 20 (1); 123-141
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of advanced signal-processing methods for roller bearing faults detection
Autorzy:
Urbanek, J.
Barszcz, T.
Uhl, T.
Powiązania:
https://bibliotekanauki.pl/articles/221168.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fault detection
condition monitoring
rolling element bearing
wind turbine
Opis:
Wind turbines are nowadays one of the most promising energy sources. Every year, the amount of energy produced from the wind grows steadily. Investors demand turbine manufacturers to produce bigger, more efficient and robust units. These requirements resulted in fast development of condition-monitoring methods. However, significant sizes and varying operational conditions can make diagnostics of the wind turbines very challenging. The paper shows the case study of a wind turbine that had suffered a serious rolling element bearing (REB) fault. The authors compare several methods for early detection of symptoms of the failure. The paper compares standard methods based on spectral analysis and a number of novel methods based on narrowband envelope analysis, kurtosis and cyclostationarity approach. The very important problem of proper configuration of the methods is addressed as well. It is well known that every method requires setting of several parameters. In the industrial practice, configuration should be as standard and simple as possible. The paper discusses configuration parameters of investigated methods and their sensitivity to configuration uncertainties.
Źródło:
Metrology and Measurement Systems; 2012, 19, 4; 715-726
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of supra-harmonics through signal processing methods in smart grids
Autorzy:
Yalcin, T.
Ozdemir, M.
Kostyla, P.
Leonowicz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/136245.pdf
Data publikacji:
2017
Wydawca:
EEEIC International Barbara Leonowicz Szabłowska
Tematy:
ensemble empirical mode decomposition
power quality
Fourier analysis
Short Time Fourier Transformation
Opis:
Nowadays supra-harmonic distortion studies are gaining attention day by day in power quality research area. When handling communication systems especially Power Line Carrier (PLC) systems in frequency range 2-150 kHz, they are suitable for causing electromagnetic interference (EMI) to other systems. This study shows results of analysis employing advanced method called ensemble empirical mode decomposition (EEMD) to describe supra-harmonic distortion. Unlike the traditional method (short time fourier transform-STFT), EEMD gives extensive representation for supra-harmonic components.
Źródło:
Transactions on Environment and Electrical Engineering; 2017, 2, 2; 80-85
2450-5730
Pojawia się w:
Transactions on Environment and Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of processing methods on the content of minerals in fish products
Autorzy:
Polak-Juszczak, L.
Powiązania:
https://bibliotekanauki.pl/articles/13995.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
processing method
mineral content
fish product
salting
pickling
smoking
Opis:
Effects of salting, pickling and smoking processing methods on the mineral composition in fish products were investigated. The concentrations of Ca, P, Mg, K, Na, Cu, Fe, Zn, Mn and Se in fish products were determined during subsequent stages of processing in raw fish, semi-processed products and ready products. Fresh fish contained macro-elements in the following order: K > P > Na > Ca > Mg. The tendency was similar in semi-processed and ready products, except for the dominance of sodium. The sodium content in marinated products was three-fold higher than in fresh fish and twelve-fold higher in salted herring and cold-smoked fish. The sodium content in a 100 g portion of salted herring exceeded by six-fold the recommended daily allowance and by two-fold the tolerated amount. The content of K, Mg and P in marinated and salted herring tended to decrease throughout processing. No significant differences were observed in concentrations of Ca. The order of the concentrations of microelements was as follows: Zn > Fe > Cu > Se > Mn. The content of these elements in fish products was similar to their levels in fresh fish and corresponded to the following shares of the recommended allowances: Se up to 20%; Cu up to 11%; Zn up to 6%; Mn up to 1%; Fe up to 10%. Disadvantageous changes in the mineral composition in fish during processing result from water losses during technological processes, but the primary cause of mineral loss was leaching when the products were soaked in brine solutions with a high sodium content. Significant changes in the content of minerals in salted and pickled herring decreased the nutritional value of these products. Smaller mineral losses that occurred during smoking meant that these products were more valuable nutritionally in relation to minerals.
Źródło:
Journal of Elementology; 2016, 21, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of rotary vane vacuum pumps using signal analysis and processing methods
Autorzy:
Łój, Paweł
Cholewa, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/127884.pdf
Data publikacji:
2019
Wydawca:
Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:
vacuum pump
signal analysis
technical diagnostics
pompa próżniowa
analiza sygnałów
diagnostyka techniczna
Opis:
Rotary vane vacuum pumps are devices widely used in various types of industries. A three-phase electric motor, which is a usual drive source in this group of devices, propels rotor, which is eccentric placed in the cylinder. The combination of this arrangement, between cylinder and rotor, with centrifugal force, forces the vanes to move out and into its slots milled in the rotor. As a result, the increase and decrease of the inter-vane volume occur, causing the air to be sucked into the pump. Due to improper exploitation, there is a possibility of a mechanical damage to the vane, and in some cases the vane can fall out of its groove, what leads to catastrophic failure. The article presents a new method for diagnostics of vanes, based on the observation and analysis of a pressure signal, generated by a rotary vane vacuum pump.
Źródło:
Vibrations in Physical Systems; 2019, 30, 2; 1-8
0860-6897
Pojawia się w:
Vibrations in Physical Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Different Processing Methods on the Behavior of Minerals Content in Food Products
Autorzy:
Alshallash, Khalid S.
Shahat, Mohamed
Ibrahim, Mohamed I.
Hegazy, Ahmed I.
Hamdy, Ashraf E.
Elnaggar, Ibrahim A.
El-Wahed, Abd El-Wahed N. Abd
Taha, Ibrahim M.
Powiązania:
https://bibliotekanauki.pl/articles/24201608.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
mineral
fruit
processing
canning
dehydration
stewing
Opis:
The goal of the current study was to determine the mineral content of different fruit varieties (Na, K, Ca, P, Mg, Fe, Zn, and Cu), as well as the effects of various processing methods (such as canning, drying, stewing, syrup process, and concentration of juices). All tested fruits that were subjected to various types of processing were exposed to a degree of mineral loss, varying from very little to high reduction. However, it still retains its nutritional value. All fig products have the greatest levels of most tested minerals, compared to other processed fruit products, particularly P and Fe. In turn, orange products supply higher quantities of Ca. On the other hand, apricot products have a comparable value of other minerals with those found in fig and orange products. Among canned juices, guava had the highest contents of Ca, P, and Fe, while mango scored the first juice as Mg and Zn supplying. Canned apricot halves contain the best amounts of K, Ca, P and Mg than the same products of apple and peach. Among jam products, fig jam has higher amounts of Na, Ca, P, Mg, and Fe than those found in other fruit jams. The concentration of fruit juices by vacuum-heating or dehydration of fruit produced higher mineral retentions than the fruit products that were processed by other techniques. The concentrated orange juice by vacuum-heating processing retained most of the minerals found in raw juice, also dried apricot sheet retained higher minerals than those retained in dehydrated whole apricot.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 263--275
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Processing methods of measured runs of torque and angular speed of combustion engine propulsion system
Autorzy:
Polanowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/260087.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship piston engine
torque
angular velocity
data processing
fast Fourier transform (FFT)
least-squares approximation by using trigonometric polynomials (TLSA)
movable approximation
synchronous averaging
Opis:
In this paper four processing methods of cyclic data runs, namely : Fourier interpolation and transformation, least-squares approximation by means of trigonometric polynomials , synchronous averaging and movable approximation , were presented by using, as an example, discretely measured runs of torque and angular speed. It was demonstrated that for extracting a useful signal out of disturbance background and decomposing the disturbances the appropriate methods are the synchronous averaging and multiple movable approximation. To emerge significant spectral lines from a spectrum the least-squares approximation by using trigonometric polynomials can be applied. The method contains a criterion for signal filtration and is insensitive to disturbances, run truncation and sampling irregularity. Fast Fourier Transform (FFT) may have an auxiliary significance for preliminary spectral analysis. Its main disadvantage is that in order to build a smoothing-out filter its parameters should be determined in advance, e.g. by applying one of the remaining methods.
Źródło:
Polish Maritime Research; 2006, 4; 15-22
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł

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