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Wyszukujesz frazę "envelope" wg kryterium: Temat


Tytuł:
Factorization of uniformly holomorphic functions
Autorzy:
Moraes, Luiza
Paques, Otilia
Zaine, M.
Powiązania:
https://bibliotekanauki.pl/articles/1311551.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
uniformly holomorphic
envelope of holomorphy
Opis:
Let E be a complex Hausdorff locally convex space such that the strong dual E' of E is sequentially complete, let F be a closed linear subspace of E and let U be a uniformly open subset of E. We denote by Π: E → E/F the canonical quotient mapping. In §1 we study the factorization of uniformly holomorphic functions through π. In §2 we study F-quotients of uniform type and introduce the concept of envelope of uF-holomorphy of a connected uniformly open subset U of E. The main result states that the pull-back $ε_{u}^\ast(U)$ of the envelope of uniform holomorphy of Π(U) constructed by Paques and Zaine [9] is the envelope of uF-holomorphy of U.
Źródło:
Annales Polonici Mathematici; 1995, 61, 1; 1-11
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recognizing the authenticity of the postal envelopes sealing using IR thermography and thickness measurement
Autorzy:
Kopeć, M.
Powiązania:
https://bibliotekanauki.pl/articles/114111.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
envelope
sealing
infrared camera
caliper
microscope
Opis:
This paper presents two methods to recognize authenticity of the postal envelopes sealing. These methods are: infrared thermography and thickness measurement. Additionally, microscope inspection is presented. Based on the results, quantitative assessment was developed. The proposed methods make it possible to recognize authenticity of the postal envelopes sealing.
Źródło:
Measurement Automation Monitoring; 2017, 63, 3; 111-114
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using Thermography to Locate Air Leakages through the envelope of a Building in the summer season
Autorzy:
Stachniewicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/114210.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
termography
envelope air-leakness
airtightness test
Opis:
The article presents how to use thermography to locate leakages through the air envelope of three selected single-family houses. Identification of air leakage was possible using differential analysis of thermal images recorded during a pressure test of the buildings as thermovision sequences. This enabled the detection of leakages through envelopes of the buildings at small summer internal and external temperature differences from 2 to 5(C.
Źródło:
Measurement Automation Monitoring; 2015, 61, 6; 261-264
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy Extreme Analysis in Time- and Frequency Domains
Autorzy:
Pogribny, W.
Drzycimski, M.
Drzycimski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/227196.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
extreme analysis
envelope extraction
signal compression
Opis:
Very often, we are interested in the shape of a signal or an envelope of the signal or its spectrum. Classical extreme analysis (CEA) produces too many minor details of a signal shape. This fact, in the context of telecommunications, does not allow us to ensure a significant coefficient of a signal compression. Another option for signal analysis, based on the Delta Modulation (DM), lacks sufficient dynamic range at a relatively low sampling rate. One more "true envelope" manner is based on the cepstral analysis, and requires too many operations. Other methods are used for the definition of a signal envelope. The discrete Hilbert transform (DHT) is only expedient to capture an envelope of a narrowband signal and, moreover, requires too many mathematical operations. Other manners based on decimation, as well as the use of a signal rectifying followed by low-pass filtering do not always ensure sufficient accuracy and signal compression coefficient. Fuzzy EA (FEA) is free from similar drawbacks. Its first and second differences are compared with no zero limits, and that allows us to take into consideration only major details of the signal or spectrum shape. Consequently we obtain both an envelope of wideband signal, and a signal significant compression in real time. This article focuses on FEA features connected with the aforementioned tasks. Apart from the FEA algorithm, the article outlines some methods of signal reconstruction after FEA in both domains, and the structure of the FEA specializedprocessor. FEA application in both domains is demonstrated through examples.
Źródło:
International Journal of Electronics and Telecommunications; 2011, 57, 4; 511-518
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of genetic aspect in pathogenesis of atopic dermatitis
Autorzy:
Wesserlking, Martyna
Powiązania:
https://bibliotekanauki.pl/articles/764862.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
allergic disease
SNPs
eczema
cornified envelope
interleukins
Opis:
The pathogenesis of atopic dermatitis (AD) is a very complicated process that involves an intricate array of molecules. Nowadays it is generally accepted that cytokines play an important role in the progression of the clinical presentation of atopic dermatitis. However, emerging data point to the possible involvement of cornified envelope proteins in the development of skin barrier dysfunction and illness. Unfortunately, our knowledge on relation of particular genotype to progression of AD is very limited. Therefore, intensive studies are needed to increase our understanding of genetic background of atopic dermatitis. Hopefully the future research will identify new factors that help us to determine the additional risk for certain patients with atopic dermatitis.
Źródło:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2013, 9; 1-8
1730-2366
2083-8484
Pojawia się w:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Retroviral targeting of proliferating endothelial cells
Autorzy:
Gornikiewicz, Alexander
Zommer, Anna
Jakesz, Raimund
Gnant, Michael
Brostjan, Christine
Powiązania:
https://bibliotekanauki.pl/articles/1041388.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
targeting
endothelial cell
envelope glycoprotein
angiogenin
retrovirus
Opis:
Tumor growth requires the formation of new blood vessels by endothelial cells. Thus, surface molecules - such as angiogenin receptors - that are selectively expressed on growing endothelium represent an attractive target for directed delivery of compounds to tumor tissue. We attempted to obtain genetically engineered retroviral vectors targeted to the endothelium by inserting the human angiogenin sequence into Moloney murine leukemia virus envelope glycoprotein. Abundant expression of the chimeric protein could be verified. However, while being selective for proliferating human endothelial cells, the recombinant retroviral particles displayed low transduction efficiencies and thus have to be further improved.
Źródło:
Acta Biochimica Polonica; 2005, 52, 3; 731-735
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Disc tool profiling for air compressor screws with complex characteristic curves
Autorzy:
Nguyen, Tuan-Linh
Hoang, Long
Powiązania:
https://bibliotekanauki.pl/articles/1833775.pdf
Data publikacji:
2021
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
disk tool
meshing condition
undercutting
envelope
gearing
Opis:
One of the best practical methods to machine the air compressor screw pairs is milling or grinding by disc tools. The mathematics involved in disc tool profiling is quite complex and requires representing the machined surface by mathematical equations without any singular points and undercutting. From a technical perspective, this article proposes the disc tool profiling integrated solution for machining complex profile screws from their reverse engineering data, which contains crucial issues such as machining deviation evaluation due to undercutting, appropriate tool position setting. The disc tool surface designed by the proposed method is highly accurate, leading the RMS error of the machined surface is less than 0.0201 mm. A difference of the angle, formed by the disc tool axis and the workpiece axis, less than 0.16°, is acceptable in air compressor technology, which leads to a machined surface RMS deviation of less than 0.0186 mm.
Źródło:
Journal of Machine Engineering; 2021, 21, 3; 101--109
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Taxonomy of Postal Indicia
Autorzy:
Oriekhova, Svetlana
Powiązania:
https://bibliotekanauki.pl/articles/1930494.pdf
Data publikacji:
2020-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
postage stamp
envelope
postal stationery
collectibles
philately
Opis:
Based on the study of the principles of classification and systematization of complex hierarchically subordinated objects of philately, the author proposed a taxonomy of postage stamps. Where taxonomic units are postage stamps, postal stationery, postage stamps, and franking machines, all that is directly related to the activities of the postal service and its products. The study is based on the study of the purpose of postage stamps of the world in 1840-2020 as an expression of public policy towards the development of national postal services, which play an important role in the process of state formation. Accordingly, the history of the postage stamp appears as a narrative about the visualization of the history and culture of each issuing state, a member of the Universal Postal Union. It is proved that the information capabilities of postage stamps are due to their belonging to the monetary system of the state, are political and economic documents, a source of study of economic and political history, material and spiritual culture. Comprehensive research of elements of postcards as well as envelopes allows establishing the time and place, reasons and circumstances of their creation, the history of technological operation over a while, the level of artistic culture, development of technologies and methods of manufacture. Proofs of calendar postmarks on stamps and envelopes are a source that allows to track technical and technological improvements in certain activities in the field of postal services. It is concluded that the analytical study of catalogued postage stamps is defined as a world philatelic heritage.
Źródło:
Krakowskie Studia Małopolskie; 2020, 2(26); 164-182
1643-6911
Pojawia się w:
Krakowskie Studia Małopolskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnosis of multiple faults of an induction motor based on Hilbert envelope analysis
Autorzy:
Kabul, Ahmet
Ünsal, Abdurrahman
Powiązania:
https://bibliotekanauki.pl/articles/2052085.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Hilbert envelope analysis
induction motor
multiple faults
Opis:
Three phase induction motors are widely used in industrial processes and condition monitoring of these motors is especially important. Broken rotor bars, eccentricity and bearing faults are the most common types of faults of induction motors. Stator current and/or vibration signals are mostly preferred for the monitoring and detection of these faults. Fourier Transform (FT) based detection methods analyse the characteristic harmonic components of stator current and vibration signals for feature extraction. Several types of simultaneous faults of induction motors may produce characteristic harmonic components at the same frequency (with varying amplitudes). Therefore, detection of multiple faults is more difficult than detection of a single fault with FT based diagnosis methods. This paper proposes an alternative approach to detect simultaneous multiple faults including broken rotor bars, static eccentricity and outer/inner-race bearing faults by analysing stator current and vibration signals. The proposed method uses Hilbert envelope analysis with a Normalized Least Mean Square (NLSM) adaptive filter. The results are experimentally verified under 25%, 50%, 75%, 100% load conditions.
Źródło:
Metrology and Measurement Systems; 2022, 29, 1; 191-205
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of selected parameters of autoclaved aerated concretes on their drying
Autorzy:
Nawalany, G.
Sokołowski, P.
Herbut, P.
Angrecka, S.
Powiązania:
https://bibliotekanauki.pl/articles/101602.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
autoclaved aerated concrete
drying
building envelope moisture
Opis:
The paper presents an analysis of the influence of the moisture content in autoclaved aerated concretes on their drying. The tested material consisted of 60 cubic samples (10 x 10cm) of fly ash aerated concrete and sand aerated concrete, types 400 and 600. The analyzed physical parameters of the samples, such as specific density, bulk density, porosity, tightness and absorbtivity, were presented in the paper. The tests revealed that the rate of autoclaved aerated concrete drying depends in the first place on its structure and the moisture content. The drying period of samples soaked with water was the shortest for the sand aerated concrete type 600. The longest drying period was observed for the samples of the fly ash aerated concrete type 600. The results of conducted analyses allowed for distinguishing two phases of autoclaved aerated concrete drying: the first - up to 10 days, when an intensive decrease in mass wetness takes place, and the second - from 10 to 25-40 days, when a slow decline in mass wetness is observed.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/1; 977-985
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Signal conditioning for examination of shallow-water acoustic noise correlation properties
Autorzy:
Rudnicki, M.
Marszal, J.
Powiązania:
https://bibliotekanauki.pl/articles/331724.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
underwater acoustics
ambient noise
noise envelope
tetrahedral antenna
Opis:
The article describes the process of signal conditioning for examination of acoustic noise correlation properties in shallow water. Knowledge of these properties is very important for the design processes of passive and active hydroacoustic systems. This paper focuses on the above issue from the point of view of passive sonar. In sonar systems, signal processing algorithms operate on both useful acoustic signals, and accompanying noise. Quantitative estimation of the correlation properties of acoustic noise enables an accurate determination of detection conditions. This will verify the validity of certain commonly used simplified models in simulations of hydroacoustic systems. The article presents how the measurement system was constructed, and the structure of files for storing measurement data. It describes the processing algorithm developed for the measured signal conditioning. Research results are presented and discussed.
Źródło:
Hydroacoustics; 2016, 19; 335-340
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
p-Envelopes of non-locally convex F-spaces
Autorzy:
Eoff, C.
Powiązania:
https://bibliotekanauki.pl/articles/1312026.pdf
Data publikacji:
1992
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
p-envelope
non-locally convex F-space
multiplier
Opis:
The p-envelope of an F-space is the p-convex analogue of the Fréchet envelope. We show that if an F-space is locally bounded (i.e., a quasi-Banach space) with separating dual, then the p-envelope coincides with the Banach envelope only if the space is already locally convex. By contrast, we give examples of F-spaces with are not locally bounded nor locally convex for which the p-envelope and the Fréchet envelope are the same.
Źródło:
Annales Polonici Mathematici; 1992, 57, 2; 121-134
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Megacrysts of kyanite from Baranec Mt., Western Tatra Mountains, Slovakia
Autorzy:
Pyka, Paulina
Szopa, Krzysztof
Gawęda, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/127621.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Mineralogiczne
Tematy:
kyanite
metamorphic envelope
Western Tatra Mts.
Western Carphatians
Opis:
Large crystals of kyanite (<15 cm in size) occur in quartz segregations in Paleozoic gneissses on Baranec Mt., Western Tatra Mountains, northern Slovakia. Blue kyanite crystals coexist with quartz and plagioclase. The kyanite contains inclusions of apatite, monazite. gamet, rutile and biotite and overgrowths of retrograde sillimanite. muscovite and biotite. The kyanite crystals are the largest found up to now in the Tatra crystalline massif or in the other Western Carpathians crystalline cores. Kyanite. with the co-existing mineral assemblage, is indicative of a HP stage duiing Hercynian metamorphism of the Western Tatra Mountains.
Źródło:
Mineralogia; 2013, 44, 1/2; 31-37
1899-8291
1899-8526
Pojawia się w:
Mineralogia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
External wall technological solutions for carbon zero kindergartens in Italy
Autorzy:
Ciacci, Cecilia
Bazzocchi, Frida
Di Naso, Vincenzo
Powiązania:
https://bibliotekanauki.pl/chapters/31234004.pdf
Data publikacji:
2020
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
external envelope
carbon-zero
sensitivity analysis
kindergartens
sustainability
Opis:
For the construction of a carbon zero kindergartens, it is necessary to choose a proper technological solution for the external wall and the material to be used for the insulation layer in the early stages of the design process. Furthermore, in the context of “2030 climate & energy framework” and “2050 low-carbon economy”, from the beginning of the building design, it is fundamental to try to identify the elements that significantly influence energy performance to reduce building energy needs. The main aim of the presented study is to analyse five different technological solutions for an external wall combined with four different materials for the insulation layer. The solutions will be used in a new typological model for a kindergarten and analysed and compared with respect to both environmental impact and energy performance. Results point out that all the technological solutions proposed are valid alternatives to build a carbon-zero kindergarten in Italy. Furthermore, for completeness, a sensitivity analysis was carried out to understand the influence on energy demand of different factors such as, for instance, the type of wall technological solution, the thickness of insulation for wall and roof and the type of solar shading considering different climate zones in Italy.
Źródło:
Innovations – Sustainability – Modernity – Openness. Energy; 45-65
9788366391291
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection damage in bearing system of jet engine using the vibroacoustic method
Autorzy:
Żokowski, M.
Majewski, P.
Spychała, J.
Powiązania:
https://bibliotekanauki.pl/articles/970580.pdf
Data publikacji:
2017
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
jet engine
damage of bearing
vibroacoustic method
envelope method
Opis:
The article discusses typical, operational systems for monitoring vibrations of jet engines, which constitute the propulsion of combat aircraft of the Armed Forces of the Republic of Poland. After that, the paper presents the stage of installing vibration measuring sensors in the direct area of one of the jet engine bearings, which is a support system for its rotor. The article discusses results of carried out analyses of data gathered during tests of the engine in the conditions a jet engine test bed. Results of detecting damages to the bearing, using sensors built in the direct area will be presented.
Źródło:
Acta Mechanica et Automatica; 2017, 11, 3; 237-242
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł

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