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Wyświetlanie 1-15 z 21
Tytuł:
Shaft liquidation method adjusted for high precipitation associated with climate change impact
Autorzy:
Szymała, Jan
Całus Moszko, Joanna
Janson, Ewa
Sobczak, Dagmara
Konsek, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2201412.pdf
Data publikacji:
2022
Wydawca:
Główny Instytut Górnictwa
Tematy:
coal mining
shaft liquidation
climate change
wydobycie węgla
likwidacja szybu
zmiana klimatu
Opis:
In connection with the implementation of the international project TEXMIN within the framework of the RFCS fund, a project for the liquidation of the Głowacki Shaft in Rybnik (Poland) was undertaken, which takes into account the effects of climate change, i.e. evaluation of the increase of precipitation in the region. In addition to the standard research undertaken before liquidation activities, precipitation data recorded by the Institute of Meteorology and Water Management from 1995 to 2019 was collected and the precipitation variability was analysed. As a result, a method for liquidation of the shaft was selected consisting of constructing a permeable backfill column in the shaft and using a shaft pipe filled with permeable backfill material. Metallurgical aggregate was identified as a suitable backfill material, for which degradation tests, filtration coefficient tests and an assessment of its impact on water quality were carried out. It has been determined that a backfill column constructed in this manner can fulfil its function as a long-term gravity-driven water flow.
Źródło:
Journal of Sustainable Mining; 2022, 21, 3; 216--227
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved Method of Searching the Associative Rules while Developing the Software
Autorzy:
Savchuk, Tamara O.
Pryimak, Natalia V.
Slyusarenko, Nina V.
Smolarz, Andrzej
Smailova, Saule
Amirgaliyev, Yedilkhan
Powiązania:
https://bibliotekanauki.pl/articles/226118.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
software development
classification
C4.5 algorithm
associated rules
FPG-algorithm
Opis:
As the delivery of good quality software in time is a very important part of the software development process, it's a very important task to organize this process very accurately. For this, a new method of the searching associative rules were proposed. It is based on the classification of all tasks on three different groups, depending on their difficulty, and after this, searching associative rules among them, which will help to define the time necessary to perform a specific task by the specific developer.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 3; 425-430
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Grupy jednolite w metodzie reprezentacji binarnych
Uniform group in the binary representation method
Autorzy:
Łukowski, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/41206389.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Tematy:
tabela prawdy układu kombinacyjnego
grupa jednolita
metoda reprezentacji binarnych
truth table of combinational system
uniform group
associated group
method of binary representations
Opis:
W artykule przedstawiono definicję grupy jednolitej zdefiniowanej w metodzie reprezentacji binarnych. Możliwość identyfikacji grupy jednolitej umożliwia konstrukcję uproszczonego zapisu logicznego w całościowym rozpatrywaniu układu kombinacji wielowejściowego układu kombinacyjnego. Metoda reprezentacji binarnych stanowi alternatywny sposób konstrukcji uproszczonego zapisu funkcji wyjściowej układu kombinacyjnego w odniesieniu do metody przekształceń formalnych, metody tablic Karnaugha czy metody Quine’a–McCluskeya.
The article presents definitions of uniform group defined in the binary representation method. The ability to identify uniform group enables the construction of a simplified logical description in the total consideration of the combinations of a multi-input combination system. The binary representation method is an alternative way of constructing a simplified description of the output function of a combinational system in relation to the method of formal transformations, the Karnaugh table or the Quine-McCluskey methods.
Źródło:
Studia i Materiały Informatyki Stosowanej; 2019, 2; 22-24
1689-6300
Pojawia się w:
Studia i Materiały Informatyki Stosowanej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the underwater noise associated with remotely-operated vehicles
Autorzy:
Buszman, K.
Mironiuk, W.
Powiązania:
https://bibliotekanauki.pl/articles/134926.pdf
Data publikacji:
2018
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
hydroacoustic
remotely-operated vehicles
spectrum
one-third-octave
object identification
passive method
shallow water
Opis:
There is increasing demand for various types of submersible and floating remotely-operated vehicles which have herein been studied with respect to the threats posed by these kinds of objects. Local physical field disorder analyses have demonstrated the possibility of detecting and classifying objects based on hydroacoustics. Hydroaocoustic analysis results are presented as narrowband and One-Third-Octave spectra of different types of remotely-operated vehicles. Investigations were performed using an underwater measuring system located in very shallow water in a coastal zone characterized by conditions considered as poor for sound propagation.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 54 (126); 129-132
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On eigenvectors associated to a multiple eigenvalue
Autorzy:
Cruz-Santiago, R.
López-Bonilla, J.
Vidal-Beltrán, S.
Powiązania:
https://bibliotekanauki.pl/articles/1177790.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Eigenvalue problem
Faddeev-Sominsky’s technique
Gower’s method
Opis:
If all roots of the characteristic polynomial of a matrix have distinct values, then the Faddeev-Sominsky’s algorithm gives the corresponding eigenvectors. Here we exhibit the method of Gower to construct the proper vectors associated to a multiple eigenvalue.
Źródło:
World Scientific News; 2018, 100; 248-253
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy associated tuning method for short-term series forecasting by complete and incomplete datasets
Autorzy:
Rodríguez-Rivero, C.
Pucheta, J.
Laboret, S.
Sauchelli, V.
Patińo, D.
Powiązania:
https://bibliotekanauki.pl/articles/91842.pdf
Data publikacji:
2017
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
short time series
forecasting
missing data
energy associated to series
complete datasets
incomplete datasets
Opis:
This article presents short-term predictions using neural networks tuned by energy associated to series based-predictor filter for complete and incomplete datasets. A benchmark of high roughness time series from Mackay Glass (MG), Logistic (LOG), Henon (HEN) and some univariate series chosen from NN3 Forecasting Competition are used. An average smoothing technique is assumed to complete the data missing in the dataset. The Hurst parameter estimated through wavelets is used to estimate the roughness of the real and forecasted series. The validation and horizon of the time series is presented by the 15 values ahead. The performance of the proposed filter shows that even a short dataset is incomplete, besides a linear smoothing technique employed; the prediction is almost fair by means of SMAPE index. Although the major result shows that the predictor system based on energy associated to series has an optimal performance from several chaotic time series, in particular, this method among other provides a good estimation when the short-term series are taken from one point observations.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2017, 7, 1; 5-16
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lifetime Distribution and Associated Inference of Systems with Multiple Degradation Measurements Based on Gamma Processes
Wyznaczanie rozkładu czasów życia oraz wnioskowanie dla systemów wymagających pomiarów współistniejących degradacji w oparciu o procesy gamma
Autorzy:
Pan, Z.
Feng, J.
Sun, Q.
Powiązania:
https://bibliotekanauki.pl/articles/302179.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
multiple degradation
lifetime distribution
gamma process
Birnbaum-Saunders distribution
MCMC method
degradacja współistniejąca
rozkład czasów życia
proces gamma
rozkład Birnbauma-Saundersa
metoda MCMC
Opis:
With development of science and technology, many engineering systems take on high reliable characteristic and usually have complex structure and failure mechanisms, with their reliability being evaluated by multiple degradation measurements. In certain physical situations, the degradation of these performance characteristics would be always positive and strictly increasing. Therefore, the gamma process is usually considered as a degradation process due to its independent and non-negative increments properties. In this paper, we suppose that a system has multiple dependent performance characteristics and that their degradation can be modeled by gamma processes. For such a multivariate degradation involving three or more performance characteristics, we propose to use a multivariate Birnbaum-Saunders distribution and its marginal distributions to approximate the reliability function and give the corresponding lifetime distribution. And then, the inferential method for the model parameters is developed. Finally, for an illustration of the proposed model and method, a simulated example is discussed and some computational results are presented.
Wraz z rozwojem nauki i techniki, powstaje coraz więcej systemów inżynieryjnych o wysokich parametrach niezawodnościowych, które zwykle charakteryzują się złożoną strukturą i złożonymi mechanizmami uszkodzeń. Ocena niezawodności w przypadku takich systemów wymaga pomiarów współwystępujących procesów degradacji . W pewnych sytuacjach fizycznych, degradacja właściwości użytkowych systemu będzie zawsze dodatnia oraz ściśle rosnąca. Proces degradacji jest zwykle procesem gamma, który charakteryzują niezależne i nieujemne przyrosty. W niniejszej pracy, założono, że system ma wiele zależnych charakterystyk pracy oraz że ich degradację można modelować procesem gamma. W przypadkach takiej wielowymiarowej degradacji obejmującej trzy lub więcej charakterystyk pracy zaproponowano zastosowanie rozkładu Birnbauma-Saundersa (uwzględniającego wiele zmiennych) oraz jego rozkładów brzegowych do aproksymacji funkcji niezawodności oraz określania odpowiadającego jej rozkładu czasu pracy. Opracowano metodę wnioskowania dla parametrów modelu. Wreszcie, dla zilustrowania proponowanego modelu oraz metody, omówiono przykład symulacyjny oraz przedstawiono niektóre wyniki obliczeniowe.
Źródło:
Eksploatacja i Niezawodność; 2016, 18, 2; 307-313
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problems and methods of calculating the Legendre functions of arbitrary degree and order
Autorzy:
Novikova, E.
Dmitrenko, A.
Powiązania:
https://bibliotekanauki.pl/articles/145436.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wyznaczanie geoidy
pole grawitacyjne
harmoniczne sferyczne
Fully Normalized Associated Legendre Functions
recursion
underflow problem
overflow problem
Fukushima method
Opis:
The known standard recursion methods of computing the full normalized associated Legendre functions do not give the necessary precision due to application of IEEE754-2008 standard, that creates a problems of underflow and overflow. The analysis of the problems of the calculation of the Legendre functions shows that the problem underflow is not dangerous by itself. The main problem that generates the gross errors in its calculations is the problem named the effect of “absolute zero”. Once appeared in a forward column recursion, “absolute zero” converts to zero all values which are multiplied by it, regardless of whether a zero result of multiplication is real or not. Three methods of calculating of the Legendre functions, that removed the effect of “absolute zero” from the calculations are discussed here. These methods are also of interest because they almost have no limit for the maximum degree of Legendre functions. It is shown that the numerical accuracy of these three methods is the same. But, the CPU calculation time of the Legendre functions with Fukushima method is minimal. Therefore, the Fukushima method is the best. Its main advantage is computational speed which is an important factor in calculation of such large amount of the Legendre functions as 2 401 336 for EGM2008.
Źródło:
Geodesy and Cartography; 2016, 65, 2; 283-312
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acoustic emission signals associated with prebreakdown state in air high voltage insulating systems
Autorzy:
Dobrzycki, A.
Opydo, W.
Zakrzewski, S.
Powiązania:
https://bibliotekanauki.pl/articles/97311.pdf
Data publikacji:
2015
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
high voltage insulating system
breakdown voltage
acoustic emission method
dielectric coatings
Opis:
The paper presents the method of acoustic emission (AE) in the study of the state of insulation systems with air as the high-voltage insulation. The tested object was a planar system of electrodes made of aluminum. In addition, the analysis of AE signals and the impact on these signals the presence of dielectric coating on the electrode surfaces of aluminum was tested. We examined the influence of saturation (seal) these coatings on the dielectric strength of the insulation system. The study was conducted at an air pressure values 1·105, 3·105 and 5·105 Pa. The strength of the electrical systems were tested at alternating voltage with a frequency of 50 Hz. Noted pros and cons of using the method of EA in the context of the assessment of high-voltage electric insulation devices. The presented results confirm the possibility of using acoustic emission method, not only for identifying vulnerable areas, but also to predict the time of of further use of high voltage device.
Źródło:
Computer Applications in Electrical Engineering; 2015, 13; 278-286
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of proteins associated with amyloidosis by polarity index method
Autorzy:
Polanco, Carlos
Samaniego, José
Uversky, Vladimir
Castañón-González, Jorge
Buhse, Thomas
Leopold-Sordo, Marili
Madero-Arteaga, Alejandro
Morales-Reyes, Alicia
Tavera-Sierra, Lourdes
González-Bernal, Jesus
Arias-Estrada, Miguel
Powiązania:
https://bibliotekanauki.pl/articles/1039130.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Polarity index method
natively unfolded proteins
intrinsically disordered proteins
natively folded proteins
neurons
amyloidosis
amyloid
amyloidogenic protein
Opis:
There is a natural protein form, insoluble and resistant to proteolysis, adopted by many proteins independently of their amino acid sequences via specific misfolding-aggregation process. This dynamic process occurs in parallel with or as an alternative to physiologic folding, generating toxic protein aggregates that are deposited and accumulated in various organs and tissues. These proteinaceous deposits typically represent bundles of β-sheet-enriched fibrillar species known as the amyloid fibrils that are responsible for serious pathological conditions, including but not limited to neurodegenerative diseases, grouped under the term amyloidoses. The proteins that might adopt this fibrillar conformation are some globular proteins and natively unfolded (or intrinsically disordered) proteins. Our work shows that intrinsically disordered and intrinsically ordered proteins can be reliably identified, discriminated, and differentiated by analyzing their polarity profiles generated using a computational tool known as the polarity index method (Polanco & Samaniego, 2009; Polanco et al., 2012; 2013; 2013a; 2014; 2014a; 2014b; 2014c; 2014d). We also show that proteins expressed in neurons can be differentiated from proteins in these two groups based on their polarity profiles, and also that this computational tool can be used to identify proteins associated with amyloidoses. The efficiency of the proposed method is high (i.e. 70%) as evidenced by the analysis of peptides and proteins in the APD2 database (2012), AVPpred database (2013), and CPPsite database (2013), the set of selective antibacterial peptides from del Rio et al. (2001), the sets of natively unfolded and natively folded proteins from Oldfield et al. (2005), the set of human revised proteins expressed in neurons, and non-human revised proteins expressed in neurons, from the Uniprot database (2014), and also the set of amyloidogenic proteins from the AmyPDB database (2014).
Źródło:
Acta Biochimica Polonica; 2015, 62, 1; 41-55
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of proteins associated with Mycobacterium tuberculosis virulence pathway by their polar profile
Autorzy:
Polanco, Carlos
Castañón-González, Jorge
Mancilla, Raul
Buhse, Thomas
Samaniego, José
Gimbel, Arturo
Powiązania:
https://bibliotekanauki.pl/articles/1039087.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Mycobacterium tuberculosis bacteria virulence pathway
Polarity Index Method
Opis:
With almost one third of the world population infected, tuberculosis is one of the most devastating diseases worldwide and it is a major threat to any healthcare system. With the mathematical-computational method named "Polarity Index Method", already published by this group, we identified, with high accuracy (70%), proteins related to Mycobacterium tuberculosis bacteria virulence pathway from the Tuberculist Database. The test considered the totality of proteins cataloged in the main domains: fungi, bacteria, and viruses from three databases: Antimicrobial Peptide Database (APD2), Tuberculist Database, Uniprot Database, and four antigens of Mycobacterium tuberculosis: PstS-1, 38-kDa, 19-kDa, and H37Rv ORF. The method described was calibrated with each database to achieve the same performance, showing a high percentage of coincidence in the identification of proteins associated with Mycobacterium tuberculosis bacteria virulence pathway located in the Tuberculist Database, and identifying a polar pattern regardless of the group studied. This method has already been used in the identification of diverse groups of proteins and peptides, showing that it is an effective discriminant. Its metric considers only one physico-chemical property, i.e. polarity.
Źródło:
Acta Biochimica Polonica; 2015, 62, 2; 191-196
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ metod analiz na niepewność oznaczeń chlorowców w wodach powierzchniowych zlewni górnej Odry i w wodach kopalnianych do niej odprowadzanych
Influence of analyses method on uncertainty associated with halogens determination in Upper Odra River Basin surface water and coalmine water inducted to it
Autorzy:
Dwornik, M.
Kmiecik, E.
Bebek, M.
Powiązania:
https://bibliotekanauki.pl/articles/2075369.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
niepewność pomiaru
kontrola duplikatów próbek
analiza wariancji
halogeny
jakość wody
measurement uncertainty
control duplicate samples
variance analyses
halogens
water quality
Opis:
In this paper the total uncertainty and its components (geochemical, sampling and analytical) were assessed with use of the empirical approach. For uncertainty estimation there were used results from analyses of normal and control (duplicate) samples, which were collected within monitoring of Upper Odra River Basin surface water and coalmine water inducted to it. Moreover, the influence of analyses method on the measurement uncertainty was examined. Results of ICP-MS, IC and titration methods were compared. The assessment of total uncertainty and its components was shown on the example of halogens (Cl −, Br − and I −) results delivered from normal and duplicate samples analyses.
Źródło:
Przegląd Geologiczny; 2015, 63, 10/1; 705--709
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Migracija i transformacija FPGS v okruzhajushhejj srede pri popadanii ikh v pochvu s osadkami stochnykh bod
PPCP migration and transformation in the environment associated with their entry into the soil with sewage sludge
Autorzy:
Valkina, E.
Vernezi, S.
Nikolenko, I.
Powiązania:
https://bibliotekanauki.pl/articles/78050.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
personal care product
pharmaceutical care product
environment pollutant
sewage sludge
treatment method
biotransformation
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 5
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possible computational filter to detect proteins associated to influenza A subtype H1N1
Autorzy:
Polanco, Carlos
Buhse, Thomas
Castañón-González, Jorge
Samaniego, José
Powiązania:
https://bibliotekanauki.pl/articles/1039197.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Polarity Index Method
influenza A virus subtype H1N1
drug design
QSAR method
Opis:
The design of drugs with bioinformatics methods to identify proteins and peptides with a specific toxic action is increasingly recurrent. Here, we identify toxic proteins towards the influenza A virus subtype H1N1 located at the UniProt database. Our quantitative structure-activity relationship (QSAR) approach is based on the analysis of the linear peptide sequence with the so-called Polarity Index Method that shows an efficiency of 90% for proteins from the Uniprot Database. This method was exhaustively verified with the APD2, CPPsite, Uniprot, and AmyPDB databases as well as with the set of antibacterial peptides studied by del Rio et al. and Oldfield et al.
Źródło:
Acta Biochimica Polonica; 2014, 61, 4; 693-698
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ultrasonic Method for Monitoring Environmental Risks Associated with Precipitation
Autorzy:
Gudra, T.
Banasiak, D.
Herman, K.
Opieliński, K.
Powiązania:
https://bibliotekanauki.pl/articles/176767.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasonic method
snow layer
monitoring of environmental risk
Opis:
This paper presents a solution that utilises ultrasonic technology to allow monitoring snow layer thickness or water level based on measurement from air. It describes the principle of operation of a measurement device using three methods of compensating for changing external factors affecting appliance’s precision. Block diagram of the device is also provided. In order to verify the proposed solutions, the research team tested the device in laboratory and operating conditions. The results obtained this way make it possible to select a configuration of device operation depending on the required measurement precision and limitations associated with installing the system for actual operation.
Źródło:
Archives of Acoustics; 2013, 38, 1; 125-135
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 21

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