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Wyświetlanie 1-50 z 345
Tytuł:
On a method to employ Newton’s Rings concept to determine thickness of thin films
Autorzy:
Raveesha, K. H.
Doddamani, V. H.
Prasad, B. K.
Powiązania:
https://bibliotekanauki.pl/articles/412571.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Interference
fringes
destructive interference
constructive interference
air wedle
Opis:
Newton’s Rings experiment is traditionally utilized to find radius curvature of a lens. We propose a method in which this same set up can be used to find the thickness of thin films. The working principle is interference. It is based on the fact that, the formation of bright and dark interference fringes is a measure of the thickness of the air film at that point. We present the experimental data. The results from the experiment are in agreement with results obtained through geometry. Further, a method to improvise conventional interference at air wedge experiment which is generally used to determine the thickness of thin films is suggested.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 3; 1-7
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interference between helicopter and its surroundings, experimental and numerical analysis
Autorzy:
Łusiak, T.
Dziubiński, A.
Szumański, K.
Powiązania:
https://bibliotekanauki.pl/articles/1943197.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska
Tematy:
loadings
interference
helicopter
Opis:
The paper describes the phenomenon of the occurrence of aerodynamic interference between a helicopter and an object in its near vicinity. Such situations occur during rescue missions as well as during police and military operations when the helicopter flies near such objects as buildings and ships. The specific shape of the example object, a typical town courtyard, is discussed below. The influence of the interference on the rotor and fuselage loading, air flow and flying qualities was analyzed for these special cases of helicopter operations. The results of the computations performed using the FLUENT software in terms of the dynamic response to disturbances on the simulation model of a helicopter rotor have been presented. The model used in these calculations made it possible to analyze flexible rotor blades. The results of the experimental tests of interference between the helicopter model and different shapes have been attached, as well.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2009, 13, 4; 379-392
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ICBCA – Improved Cluster Based Channel Allocation in Cognitive Radio Sensor Networks
Autorzy:
Agarkhed, Jayashree
Gatate, Veeranna
Powiązania:
https://bibliotekanauki.pl/articles/308481.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
channel interference
channel overlapping
co-channel interference
cognitive radio
Opis:
Wireless sensor networks (WSNs) operate in an overcrowded electromagnetic environment, as the spectrum is shared by various wireless communication technologies. This gives rise to various challenges related to optimized and efficient spectrum utilization. Cognitive radio (CR) has emerged as a solution satisfying this requirement, as it is capable of adapting to the dynamic radio spectrum. Thanks to the deployment of cognitive radio in WSNs, the spectrum may be utilized in a more efficient manner. CR may identify the vacant channels dynamically, allowing the sensor nodes to effeectively communicate with each other. In this paper a clustering algorithm known as improved cluster-based channel assignment (ICBCA) is implemented, forming clusters of CR sensor nodes and then selecting vacant channels for data transmission purposes. Simulation results show that ICBCA outperforms existing clustering algorithms in CR sensor networks.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 3; 28-35
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interferencias Morfosintácticas en la Producción Escrita de Estudiantes Hispanistas Polacos
Autorzy:
Niestorowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/605818.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
morphological interference
errors
Opis:
One of the main fields of studies within the framework of second language teaching methodology is an analysis of linguistic errors which constitute characteristic phenomenon of different stages throughout the teaching process. Although an error is a systematic deviation from the linguistic norm, it also seems to be an essential step in the second language acquisition. The main aim of this article is to present and analyse the most frequent errors occurring in essays written by Polish students. The analysis concentrates on morphosyntacic errors, since morphosyntax can be considered an area in which the greatest difficulties are to be noticed. The author describes and analyses errors in two problematic areas, namely in the use of articles and past tenses.
Źródło:
Lublin Studies in Modern Languages and Literature; 2008, 32; 273-281
0137-4699
Pojawia się w:
Lublin Studies in Modern Languages and Literature
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Błędy wynikające z interferencji kulturowej popełniane przez Niemców uczących się języka polskiego jako obcego
Errors made by German learners of Polish caused by cultural interference
Autorzy:
Skura, Marta
Powiązania:
https://bibliotekanauki.pl/articles/47220858.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
błąd
interferencja językowa
interferencja kulturowa
error
language interference
cultural interference
Opis:
Punktem wyjścia jest stwierdzenie, że w trakcie nauki języka obcego dochodzi nie tylko do interferencji językowej, lecz także do kulturowej. Ta druga rozumiana jest jako przenikanie elementów zachowań i postaw z kultury rodzimej do wypowiedzi w języku obcym. Autorka podaje przykłady błędów popełnionych w pracach pisemnych Niemców uczących się polskiego jako obcego.
The starting point of the paper is the idea that in the process of foreign language learning, there can occur not only language interference but also cultural interference. The latter can be defined as transferring the elements of behaviors and attitudes from the native culture into the utterances in a foreign language. The author gives examples of errors made in texts written by German learners of Polish.
Źródło:
Acta Universitatis Lodziensis. Kształcenie Polonistyczne Cudzoziemców; 2013, 20; 149-158
0860-6587
2449-6839
Pojawia się w:
Acta Universitatis Lodziensis. Kształcenie Polonistyczne Cudzoziemców
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model of the signal of the Galileo Satellite Navigation System
Autorzy:
Džunda, M.
Čikovský, S.
Melniková, L.
Powiązania:
https://bibliotekanauki.pl/articles/24201440.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System
navigation system
Galileo
E1 signal
interference
chaotic impulse interference
narrowband interference
simulation method
Opis:
This article presents an analysis of the Galileo E1 signal and its sensitivity to different types of interference. The research involved modeling white noise, chaotic impulse interference, and narrowband interference and the effects of these interfering signals on the E1 signal. Based on the available information, spectral structures were created for the mentioned types of interference, and subsequently, these interferences were integrated into the E1 signal in the Matlab program environment. A Kallman filter was used to filter out white noise from the additive mixture of the E1 signal and white noise. The research aimed to analyze the influence of white noise, chaotic impulse interference, and narrowband interference on the spectral power density of the E1 signal. The results of this work can be used in the design of robust receivers and signal structures capable of withstanding these types of interference.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 51--59
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intra- and inter-cell interference investigations for broadband radio access systems above 10 GHz
Autorzy:
Bose, R.
Hayn, A.
Jakoby, R.
Powiązania:
https://bibliotekanauki.pl/articles/308404.pdf
Data publikacji:
2001
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
multipath propagation
interchannel interference
Opis:
Local multipoint distribution systems (LMDS) operating above 10 GHz have a large bandwidth (2-3 GHz) but a very limited range. These systems can provide coverage to a few kilometers only. These systems can provide coverage to a few kilometers only. The size of the macro cells illuminated by the base stations, where line of sight (LOS) exists, is 1 to 6 km. To provide coverage to customers where LOS is not possible, repeaters or passive reflectors may be used. In this paper we present first results of reflection measurements at 42 GHz, and based on that, simple multipath studies, taking into account the beamwidth of the antennas of both, transmitter and receiver. Secondly, LOS cochannel and adjacent channel interference are assessed for cellular LMDS networks. As suggested in the CRABS report, the maximal spectral efficiency can be obtained with a dual frequency and polarization reuse plan. This frequency and polarization reuse leads to interference. In this paper we have first calculated the cochannel interference (CCI) and the adjacent channel interference (ACI) due to the frequency/polarization reuse schemes suggested in the CRABS report. The effects of the variation of the half power beam width (HPBW) of the receiver, the time precentage parameter p, and the cell radius on C/I are also reported. In the latter part of the paper we propose a simple interference reduction technique based on re-orientation of the receiver antennas. We have also explored the possibility of using trellis coded modulation (TCM) for reducing interference levels. Initial results have been found to be quite encouraging.
Źródło:
Journal of Telecommunications and Information Technology; 2001, 2; 10-20
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some results concerning the ends of minimal cuts of simple graphs
Autorzy:
Jia, Xiaofeng
Powiązania:
https://bibliotekanauki.pl/articles/743739.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
cut
fragment
end
interference
Opis:
Let S be a cut of a simple connected graph G. If S has no proper subset that is a cut, we say S is a minimal cut of G. To a minimal cut S, a connected component of G-S is called a fragment. And a fragment with no proper subset that is a fragment is called an end. In the paper ends are characterized and it is proved that to a connected graph G = (V,E), the number of its ends Σ ≤ |V(G)|.
Źródło:
Discussiones Mathematicae Graph Theory; 2000, 20, 1; 139-142
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of commutational interferences on the analysis of harmonics in the traction current
Autorzy:
Furman, Juliusz
Białoń, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/215115.pdf
Data publikacji:
2020
Wydawca:
Instytut Kolejnictwa
Tematy:
interference
EMC
traction
interoperability
Opis:
Commutation phenomena related to the processes of changing the amount of power taken or returned by a vehicle affect the frequency spectrum contained within the traction current. The paper presents the influence of selected physical phenomena on the parameters taken for FFT analysis utilized for assessment of the disturbances generated into the traction network. The paper also describes the stands used for measuring disturbances generated into the traction network. The results of the measurements and calculations of the frequency response of simulated signals are presented, as well as signals measured in real conditions during traction vehicle tests, which are useful for assessing the influence of commutational interferences on the analysis of harmonics in the traction current.
Źródło:
Problemy Kolejnictwa; 2020, 187; 87-97
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Просодическая интерференция в устноречевом общении на китайском языке
Prosodic Interference in Chinese Speech
Interferencja prozodyczna w komunikowaniu się w języku chińskim
Autorzy:
Галыня, Ирина
Powiązania:
https://bibliotekanauki.pl/articles/2118272.pdf
Data publikacji:
2014-12-30
Wydawca:
Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
Tematy:
interferencja
system prozodyczny
interferencja prozodyczna
faktor
błąd
interference
prosodic systems
prosodic interference
Opis:
W artykule poddano analizie zjawisko interferencji prozodycznej, które występuje w mowie rosyjskojęzycznych studentów, uczących się języka chińskiego. Autorka scharakteryzowała chiński i rosyjski system prozodyczny, określiła podstawowe różnice funkcjonalne dzielące te systemy, co pozwoliło wskazać czynniki powodujące interferencję.
The article is aimed at analyzing language interference on the phonological level. The author highlights the reasons, accounting for the breach of the prosodic norms of Chinese speech, refers to interlinguistic, intralinguistic and extralinguistic factors of language interference. The article under consideration includes analysis of Chinese and Russian prosodic systems, thus, revealing the principal functional differences between the systems and prosodic phenomena undergoing interference in the Chinese speech of Russian speaking students.
Źródło:
Białostockie Archiwum Językowe; 2014, 14; 25-38
1641-6961
Pojawia się w:
Białostockie Archiwum Językowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Urządzenia zakłócające w walce z terroryzmem
Jamming equipment on fight against terrorism
Autorzy:
Szugajew, L.
Jarzemski, J.
Powiązania:
https://bibliotekanauki.pl/articles/235263.pdf
Data publikacji:
2005
Wydawca:
Wojskowy Instytut Techniczny Uzbrojenia
Tematy:
urządzenia zakłócające
terroryzm
interference device
terrorism
Opis:
W artykule przedstawiono urządzenia zakłócające (zagłuszające) jako jeden ze sposobów walki ze skutkami terroryzmu.
The jamming equipment is presented in the paper as a way to fight against terrorism.
Źródło:
Problemy Techniki Uzbrojenia; 2005, R. 34, z. 96; 159-163
1230-3801
Pojawia się w:
Problemy Techniki Uzbrojenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lessons Learned from WiMAX Deployment at INEA
Autorzy:
Kowalik, K.
Dudek, D.
Kołodziejski, M.
Musznicki, B
Grzybek, E.
Jarzina, J.
Powiązania:
https://bibliotekanauki.pl/articles/308259.pdf
Data publikacji:
2014
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
interference
radio capacity
radio planning
WiMAX
Opis:
Home broadband access is continuously demanding more bandwidth fueled by video streaming, entertainment and gaming applications. In 2010, a company INEA decided to roll-out new WiMAX-based services aimed to meet the needs of home users across theWielkopolska region of western Poland. It was decided to follow the 802.16e standard and the Time Division Duplexing (TDD) mode that oer the ability to adjust the downlink/uplink ratio and thus are well suited for data transmission. After an extensive testing period of equipment from various vendors, engineers at INEA have chosen the Motorola (currently Cambium Networks) PMP320 solution because it is compact and its components are space- and energy-ecient. The company choice was also influenced by its simple operation, management and installation, which ensured low costs of ownership. So far, this deployment has provided fast and aordable connectivity for Internet and telephony services to around 5,500 households across the 30,000 sq. km region. After 3 years of experience, INEA would like to share the lessons learned from this roll-out.
Źródło:
Journal of Telecommunications and Information Technology; 2014, 3; 34-41
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance of CDMA systems with Walsh and PN coding
Autorzy:
Gajewski, P.
Dołowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/308358.pdf
Data publikacji:
2001
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
PN spreading
CDMA
multi-access interference
Opis:
Wideband CDMA method has been recently investigated for its using in the future communication systems. Such systems capacity depends on many factors, the main is multi-access interference (MAI). MAI is an inherent CDMA property connected to correlation characteristics of codes used to access and to spreading. The influence on CDMA performance of these codes families and parameters is presented in this paper. The standard Gaussian approximation has been used for interference analysis. Bit error rate (BER) on detector output is a measure of interference influence on transmission quality. It can be used for SNR(i) evaluation on receiver input for channel assignment and handover procedures. The results of interference analysis for the pseudo-noise sequences (M-sequences, Gold, de'Bruin and Jennings) as well as for the Walsh orthogonal mapping are presented in this paper.
Źródło:
Journal of Telecommunications and Information Technology; 2001, 2; 41-45
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polarization effects in K+–Na+ ion exchanged MMI structures with absorption cover
Autorzy:
Szewczuk, A.
Blahut, M.
Powiązania:
https://bibliotekanauki.pl/articles/175005.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
multimode interference
optical sensors
modal attenuation
Opis:
The paper concerns the polarization effects in gradient index MMI sensor structures made by ion K+–Na+ exchange. It has been shown both experimentally and based on the numerical calculation that for the K+–Na+ ion exchanged MMI structures, propagation conditions of light in multimode section vary considerably for each polarization. There are presented the possibilities of using this effect in application to gas sensing. Analyzed sensor structures are covered by WO3 absorbing nanolayers. Numerical analyses of MMI sensor are performed and modal attenuation coefficients are determined. The comparison between operation characteristics obtained for the TE and TM polarization is presented.
Źródło:
Optica Applicata; 2013, 43, 3; 441-452
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of planar multimode optical sensor with active nanolayer
Autorzy:
Błahut, Marek
Powiązania:
https://bibliotekanauki.pl/articles/1835808.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
multimode interference
optical sensor
planar waveguide
Opis:
In the paper, numerical studies of the model of an optical sensor, based on interference of modes in a planar one-dimensional step-index configuration, are presented. Calculations are performed using the method of mode field analysis. The structure consists of the single-mode input waveguide, the multimode waveguide that guides only a few modes and the single-mode output waveguide.The structure is covered by a nanometer active sensor layer of a high refractive index, which changes its optical properties in contact with the measured external surrounding. The refractive index variation of an active sensor layer affects the modal properties of the multimode waveguide and the output optical field distribution. By the proper selection of the active layer, the considered configuration can be used for gas detection.
Źródło:
Optica Applicata; 2020, 50, 3; 377-390
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Understanding nutrient competition between Echinochloa spp. and Oryza sativa L.
Autorzy:
Da Rosa Ulguim, A.
Neto, R.A.
Carlos, F.S.
Streck, N.A.
Richter, G.L.
Powiązania:
https://bibliotekanauki.pl/articles/2082751.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
barnyardgrass
flooded rice
interference
mineral nutrition
Opis:
Weed competition in southern Brazil is one of the main limiting factors for Oryza sativa L. (flooded rice) yield. Echinochloa spp. (barnyardgrass) occurs at a high frequency. Although the potential for weed interference in this cereal is well known, there is little information available about the impact of nutrient competition on rice. Thus, this study aimed to evalu- ate the relationship between the increase of the barnyardgrass population and the develop- ment and nutrition of flooded rice plants at different stages of development. The treatments consisted of growing populations of barnyardgrass competing with the crop from stage V4, which were: 0, 1, 6, 13, 100 and 200 plants · m−2 . The experimental design was random- ized blocks with two replications, and the experimental units were plots 1.53 m wide by 5 m long. Plant biomass, nutrient uptake and loss of productivity were determined with three replications. An increase in the barnyardgrass population reduced the dry mass of rice leaves and stems, regardless of the evaluation period and the vegetative or reproduc- tive period. Barnyardgrass plants had a significant impact on the reduced grain yield of a flooded rice crop, mainly due to high nutrient competitiveness, especially N in the veg- etative period and K in the reproductive period. Barnyardgrass caused a loss of yield by unit · m−2 of 1.13%. The competition for N between rice and barnyardgrass plants was higher in the vegetative period, while for K, Ca and Mg the highest competition occurred in the reproductive period.
Źródło:
Journal of Plant Protection Research; 2020, 60, 3; 298-310
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distillation Column Control in Labview Using Fuzzy Interference System
Autorzy:
James, S. Aaron
Judice, A. Antony
Kumaravel, G.
Powiązania:
https://bibliotekanauki.pl/articles/1177884.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Distillation column
Fuzzy interference System
LABVIEW
Opis:
The growing importance of batch processes has recently targeted attention on the problem of rising the performance of batch operations. However, there's a low degree of automation of batch units in the present scenario. Fuzzy logic could be a fantastic human idea, doubtless applicable to a good vary of processes and tasks that need human intuition and knowledge. Fuzzy logic are often applied by means of software, dedicated controllers, or fuzzy microprocessors. Under conventional control, the average reflux rate enforced on a batch process was over the average reflux rate enforced with fuzzy algorithms, that is our planned methodology.
Źródło:
World Scientific News; 2018, 98; 214-220
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Level of Proficiency in the L2 and L3 on the Production of the L3 Spanish Apico-alveolar Sibilant
Autorzy:
Sypiańska, Jolanta
Cal, Zuzanna
Powiązania:
https://bibliotekanauki.pl/articles/1368414.pdf
Data publikacji:
2020-03-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
phonetics
linguistic proximity
language pedagogy
interference
Opis:
Current Third Language Acquisition research has traditionally focused on the L2 status (e.g. Hammarberg 2001, Bardel & Falk 2007) or linguistic proximity (e.g. Cenoz 2001, Westergaard, Mitrofanova, Mykhaylyk & Rodina 2016). Limited research has been conducted on the influence of the potentially significant factor of level of proficiency, and particularly where proficiency in both the L2 (Tremblay 2006, Woll 2016) and the L3 (Hammarberg 2001, Wrembel 2010) may be considered as a conditioning factor for the shape of the L3. The aim of the current study was thus to determine the influence of L2 and L3 level of proficiency (L2LoP and L3LoP) and the interaction of the two factors on the production of the L3 Spanish apico-alveolar sibilant in a group of L1 Polish, L2 English and L3 Spanish trilinguals who had different levels of overall proficiency in the two foreign languages. The parameters of the sibilant under analysis were spectral moments: centre of gravity (M1), standard deviation (M2), skewness (M3) and kurtosis (M4) in intervocalic position in two-syllable words with initial stress. The results point to the influential role of both L2LoP and L3LoP as well as their interaction on the production of the L3 Spanish sibilant. When the level of proficiency in one of the languages was low, it allowed the other language with a higher level of proficiency to exert influence on the values of the spectral moments in the L3 sibilant. This interplay of factors furthers the understanding of how levels of proficiency in the L2 and the L3 condition the developing L3.
Źródło:
Research in Language; 2020, 18, 1; 89-107
1731-7533
Pojawia się w:
Research in Language
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zachowane cechy dialektalne oraz wpływy polskie w rosyjskiej gwarze przedstawiciela starszego pokolenia staroobrzędowców regionu augustowskiego
Autorzy:
Głuszkowski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/676398.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Slawistyki PAN
Tematy:
Old Believers
bilingualism
dialect
interference
idiolect
Opis:
Preserved dialectal features and the Polish influence in old believers' dialect on the example of a representative of the older generation in the Augustów regionPolish Old Believers constitute a bilingual ethno-cultural minority.Their bilingualism has developed especially in the 20th century, and since then it has been modified under the influence of Polish language. On the one hand, there are Polish borrowings, insertions and loan-translations in Russian Old Believers’ dialect. On the other hand, the Old Believers have preserved many dialectal features from their region of origin – Pskov region in north-Western Russia. The author attempts to reveal, how many and which Pskov language features are still present in the Old Believers’ dialect. The analysis is basing on an idiolect of a representative of the old generation of the community of our interest.  Сохраненные диалектные черты и польское влияние в русском говоре представителя старшего поколения старообрядцев августовского регионаПольские старообрядцы составляют этнокультурное меньшинство. Их билингвизм стал развиваться начиная с ХХ столетия, и с тех пор их русский диалект подвергался особосильномувлиянию польского языка. С одной стороны, в старообрядческом говоре наблюдаются польские заимствования, вставки и кальки. С другой стороны, старообрядцы сохранили многие диалектные средневеликорусские черты. Данная статья является попыткой выяснить, какие черты диалектов из окрестностей Великих Лук, Пскова и Новгорода до сих пор существуют в говоре старообрядцев. Анализ опирается на идиолект представителя старшего поколения исследуемой общины.
Źródło:
Acta Baltico-Slavica; 2010, 34
2392-2389
0065-1044
Pojawia się w:
Acta Baltico-Slavica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction of optical noise in near-infrared range laser hygrometry
Autorzy:
Stacewicz, Tadeusz
Winkowski, Mateusz
Kuk, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/2204345.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hygrometer
laser
absorption spectroscopy
optical interference
Opis:
A contactless laser hygrometer based on light absorption by H2O molecules at 1392.5 nm is described. However, measurement results can be affected by optical noise when applied to an atmospheric tunnel or glass cuvette. The noises (occurring in the form of periodic fringes in the recorded spectrum) come from unexpected interference of the light beams reflected from surfaces of the windows or other optical elements. The method of their suppression is described in this article. It is based on wavelength modulation and signal averaging over the fringes period. Also, an experiment confirming the usefulness of this method is described here.
Źródło:
Metrology and Measurement Systems; 2023, 30, 1; 169--181
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drgania typu galopowania interferencyjnego dwóch walców o przekroju kołowym o tej samej średnicy
The interference galloping of two circular cylinders with equal diameters
Autorzy:
Błazik-Borowa, E.
Powiązania:
https://bibliotekanauki.pl/articles/390931.pdf
Data publikacji:
2007
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
interferencja aerodynamiczna
walce kołowe
galopowanie
drgania samowzbudne
aerodynamic interference
circular cylinders
interference galloping
semi-induced vibration
Opis:
W pracy przedstawiono numeryczną analizę galopowania interferencyjnego dwóch sztywnych walców kołowych o równych średnicach ze sprężystym podparciem końców. Podstawą analizy jest model quasi-ustalony tego zjawiska, opracowany w odniesieniu do kołowych przekrojów sekcyjnych walców. Model zakłada, że w procesie galopowania interferncyjnego drgają oba walce, które mają możliwość ruchu w dwóch wzajemnie prostopadłych kierunkach każdy czyli każdy z walców ma dwa stopnie swobody. Ruch walców jest opisany układem czterech nieliniowych różniczkowych równań. Na podstawie numerycznego rozwiązania tych równań, potwierdzono poprawność modelu quasi-ustalonego galopowania interfernycjnego przez porównanie wyników obliczeń z badaniami, których wyniki są dostępne w literaturze. Następnie, także na podstawie numerycznych analiz, przedstawiono zależności pomiędzy zredukowaną prędkością krytyczną, przy której mogą wystąpić drgania, od liczby Scrutona, intensywności turbulencji i wzajemnego usytuowania walców.
The paper deals with numerical analyses of interference galloping of two elasticcaly supported circular cylinders of equal diameters. The basis of the analyses is a quasi-steady model of this phenomenon. The model assumes that both cylinders participate in the process of interference galloping and they have two degrees of freedom. The movement of the cylinders is described as a set of four nonlinear differential equations. On the basis of numerical solutions of these equations the author evaluate the correctness of this quasi-steady model. Then they estimate the dependence of a critical reduced velocity on the Scruton number, turbulence intensity and arrangements of the cylinders.
Źródło:
Budownictwo i Architektura; 2007, 1, 1; 87-102
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Važnost kontrastivnog pristupa u poučavanju stranoga jezika – primjer ovladavanja hrvatskim za poljske govornike
The Importance of Contrastive Approach in Teaching a Foreign Language – an Example of the Acquisition of Croatian by Polish Speakers
Autorzy:
Kodrić, Ana
Vidović Bolt, Ivana
Powiązania:
https://bibliotekanauki.pl/articles/635770.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Polish students
Croatian as L2
interference
Opis:
This paper describes the experience of working with a homogeneous group of students, ages 18–25 years old, who studied Croatian as a first or a second foreign Slavic language. A few, isolated examples showcase analysis of errors recorded or documented in tests, dictations, and essays as well as oral and written communication with Polish students of Croatian language. The errors are mistakes that reflect interference, the similarities between the two languages. Given the limited space in this paper, we will not offer strategies or tips to avoid these mistakes effectively.
Źródło:
Poznańskie Studia Slawistyczne; 2013, 5
2084-3011
Pojawia się w:
Poznańskie Studia Slawistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interferencja aerodynamiczna opływu śmigłowiec - obiekt
Aerodynamic interference of the helicopter - object flow
Autorzy:
Łusiak, T.
Powiązania:
https://bibliotekanauki.pl/articles/213816.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
interferencja aerodynamicznma opływu
śmigłowiec
aerodynamic interference
helicopter
Opis:
W pracy przedstawiono jeden ze sposobów analizy numerycznej oraz badań eksperymentalnych zjawiska interferencji aerodynamicznej między śmigłowcem a obiektem znajdującym się w jego bezpośredniej bliskości. Przeprowadzono badania eksperymentalne na modelu oraz obiekcie rzeczywistym śmigłowca W3-A SOKOL podczas analizowania przypadku szczególnego, kiedy śmigłowiec znajdował się w otoczeniu zabudowy miejskiej. Analizie poddano wpływ zjawiska interferencji aerodynamicznej na obciążenia, opływ i własności śmigłowca w tych szczególnych przypadkach jego użytkowania. Przedstawiono wyniki obliczeń wykorzystujących oprogramowanie Fluent, odpowiedzi dynamicznych na zaburzenia symulacyjnego modelu wirnika śmigłowca uwzględniającego deformacje łopat oraz rezultaty badań eksperymentalnych na modelach fizycznych śmigłowca.
The paper describes one method of a numerical analysis and the experimental research on the phenomenon of aerodynamic interference between a helicopter and an object located in its immediate vicinity. Based on a model and a real helicopter W3-A SOKOL, the experiment concerned the special case when a helicopter was in an urban area. The analysis focused on the impact of aerodynamic interference on the loads, streamlining and properties of a helicopter in such special use. The issues presented include the results of calculations using the Fluent software, dynamic responses to the disturbance of a simulation model of a helicopter rotor including the deformation of blades, and the results of the experimental studies on helicopter physical models.
Źródło:
Prace Instytutu Lotnictwa; 2011, 2 (211); 130-145
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radius measurement of cylindrical surfaces based on analyzing the interference pattern obtained by scanning the surface with focused laser beam
Autorzy:
Jabłoński, R.
Mąkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/384301.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
radius of curvature
laser diffraction
interference pattern
Opis:
A focused laser beam is incident on the edge of cylindrical object. The reflected edge wave is interfering with geometrical wave forming fringe pattern containing the information about the surface local curvature. This can be determined by analyzing the detector output signal.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 37-40
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accuracy performance of e-Loran receivers under Cross-Rate Interference conditions
Autorzy:
Šafář, J.
Williams, P.
Vejražka, F.
Powiązania:
https://bibliotekanauki.pl/articles/320661.pdf
Data publikacji:
2012
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
e-Loran
Cross-Rate Interference
signal processing
Opis:
According to a recent Business Case produced by the General Lighthouse Authorities of the United Kingdom and Ireland (GLAs), e-Loran is the only system that, when combined with GNSS, can achieve cost effective resilient Positioning, Navigation and Timing (PNT) by 2018 for maritime e-Navigation. The GLAs currently operate a trial e-Loran service from Harwich, UK and are working towards establishing e-Loran Initial Operational Capability (IOC) in the seven busiest UK ports and port approaches by mid-2013. A future extension of e-Loran coverage to the entire GLA service area will require the installation of additional transmitting stations. When planning the installation of e-Loran transmitters service providers will need a good understanding of the effects of the new signals on the system’s performance. Since all e-Loran stations share the same frequency band and the e-Loran signals propagate over vast distances, special attention needs to be paid to the issue of intra-system interference. This is also referred to as Cross-Rate Interference (CRI) and is inherent to the way e-Loran operates. In this paper we examine the impact of CRI on the position accuracy performance of e-Loran receivers. First, a signal processing model for a typical e-Loran receiver is developed. This could provide the e-Loran community with a unified framework for receiver performance evaluation. Numerical and, where possible, analytical results obtained from the model are then presented, describing the achievable accuracy performance under different interference conditions. The theoretical results are also compared to those obtained from measurements made on a commercially available receiver driven by a signal simulator. Our analysis shows that modern e-Loran signal processing algorithms can achieve a substantial reduction of the negative effects of CRI. However, there is still an appreciable residual effect, which should be taken into account when designing future e-Loran networks and determining their coverage and performance.
Źródło:
Annual of Navigation; 2012, No. 19, part 1; 133-148
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cardioprotective effect of 5-lipoxygenase gene (ALOX5) silencing in ischemia-reperfusion
Autorzy:
Lisovyy, Oleksandr
Dosenko, Victor
Nagibin, Vasyl
Tumanovska, Lesya
Korol, Maria
Surova, Olga
Moibenko, Olexiy
Powiązania:
https://bibliotekanauki.pl/articles/1040490.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
ALOX5
RNA interference
cardiomyocytes
ischemia-reperfusion
Opis:
It is well known that 5-lipoxygenase derivates of arachidonic acid play an important pathogenic role during myocardial infarction. Therefore, the gene encoding arachidonate 5-lipoxygenase (ALOX5) appears to be an attractive target for RNA interference (RNAi) application. In experiments on cultivated cardiomyocytes with anoxia-reoxygenation (AR) and in vivo using rat model of heart ischemia-reperfusion (IR) we determined influence of ALOX5 silencing on myocardial cell death. ALOX5 silencing was quantified using real-time PCR, semi-quantitative PCR, and evaluation of LTC4 concentration in cardiac tissue. A 4.7-fold decrease of ALOX5 expression (P < 0.05) was observed in isolated cardiomyocytes together with a reduced number of necrotic cardiomyocytes (P < 0.05), increased number live (P < 0.05) and unchanged number of apoptotic cells during AR of cardiomyocytes. Downregulation of ALOX5 expression in myocardial tissue by 19% (P < 0.05) resulted in a 3.8-fold reduction of infarct size in an open chest rat model of heart IR (P < 0.05). Thus, RNAi targeting of ALOX5 protects heart cells against IR injury both in culture and in vivo.
Źródło:
Acta Biochimica Polonica; 2009, 56, 4; 687-694
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possible Solutions for Long-Standing Problems Involving Old English Verbs
Autorzy:
White, David L.
Powiązania:
https://bibliotekanauki.pl/articles/973919.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
Brittonic, Celtic,
analogy,
equivalence interference,
Germanic,
verbs
Opis:
Solutions based on “equivalence interference” are proposed for various problems involving OE verbs. WG verbs with 1SG /-ͻͻmi/ were modeled on Celtic verbs with /-aami/. Pre-OE eode is from /eiͻͻde/, analogical to 1SG /eiͻͻmi/ from /eimi/. OE dyd- is from reinterpretation of peasant /dïd-/, from low-stressed /ded-/ used as a non-emphatic periphrastic, as noble /düd-/. WG /bii-/ ‘be’ was modeled on Celtic /bii-/ ‘(habitual-future) be’. Habitual-future /bi-/ (lost on the continent) re-developed in OE on the model of habitual-future /bi-/ in Brittonic. The English rule that non-indicative forms of BE are /b/-forms is from Brittonic. 3PL bi(o)đon was modeled on Brittonic /biđont/. Pre-OE /ist/ and /im/ were influenced by Brittonic /is/ and /æm/. Loss of distinct endings before 1PL and 2PL subject pronouns and loss of distinct preterit subjunctive endings were both modeled on their analogues in Brittonic.
Źródło:
Anglica. An International Journal of English Studies; 2019, 28/2; 25-45
0860-5734
Pojawia się w:
Anglica. An International Journal of English Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trudności w opanowaniu odmiany liczebników w nauczaniu języka polskiego jako obcego na przykładzie studentów ukraińsko- i rosyjskojęzycznych
Autorzy:
Popova, Olha
Powiązania:
https://bibliotekanauki.pl/articles/2152069.pdf
Data publikacji:
2021-05
Wydawca:
Towarzystwo Kultury Języka
Tematy:
numeral
inflection of numerals
interference
language errors
Opis:
The aim of this paper is to describe the most common errors made by Ukrainian- and Russian-speaking people while learning infl ection of numerals for person and their causes. The applied comparative method permits a closer look at formal and syntactic relations as well as collocations of numerals and specifi c lexeme classes (this regards primarily agreement between cardinal numbers and masculine personal verbs, compound structures with the numeral jeden (one) and numerals showing adjectival infl ection). This study concentrates on a comparison of cardinal and ordinal numbers in Ukrainian, Russian and Polish, which allowed an analysis of the causes of errors made while learning the infl ection of numerals by Ukrainian- and Russian-speaking students.
Źródło:
Poradnik Językowy; 2021, 784, 5; 23-36
0551-5343
Pojawia się w:
Poradnik Językowy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New SEAMCAT Propagation Models: Irregular Terrain Model and ITU-R P. 1546-4
Autorzy:
Więcek, D.
Wypiór, D.
Powiązania:
https://bibliotekanauki.pl/articles/307903.pdf
Data publikacji:
2011
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
electromagnetic compatibility
interference
propagation
SEAMCAT
spectrum engineering
Opis:
Implementation of the ITU-R P.1546-4 and ITM propagation models for SEAMCAT prepared and developed in the National Institute of Telecommunications Poland is presented. Results of our research encompasses methodology, implementation and verification of plug-ins into the SEAMCAT software are shown.
Źródło:
Journal of Telecommunications and Information Technology; 2011, 3; 131-140
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poprawa zrozumiałości mowy w obecności zakłóceń z wykorzystaniem algorytmu opartego na filtracji adatacyjnej
Interfered speech intelligibility improvement using algorithm based on adaptive filtering
Autorzy:
Elwart, D.
Czyżewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/268250.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
filtracja
zakłócenia
mowa
adaptive filtering
interference
speech
Opis:
W pracy opisano nowy sposób wykorzystania filtracji adaptacyjnej do poprawy jakości dźwięków użytecznych nagrywanych w obecności zakłóceń. Przedstawiono stworzony algorytm adaptacji, omówiono możliwości przetwarzania dźwięku dodatkowymi algorytmami, opisano przeprowadzone eksperymenty. Zamieszczono i omówiono wyniki eksperymentów. Zaproponowano sposób integracji opracowanej metody z systemami akustycznego monitorowania aglomeracji miejskiej.
This paper describes a technique of improving the quality of speech signals recorded under interference (adaptive filter based algorithm). Proposed algorithm is described and additional possibilities of speech intelligibility improvement are discussed. Results of the tests are presented. A way of integrating the elaborated method with an agglomeration acoustic monitoring system is proposed. The research is subsidized by the Polish Ministry of Science and Higher Education within Grant No. R00-O0005/3.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2009, 26; 33-36
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Falsche Freunde - ein Hindernis im Fremdsprachenlernprozess nur in der Theorie oder auch in Praxis?
False friends – an obstacle to foreign language learning process only in theory or also in practice?
Autorzy:
Kosturek, Kamila
Powiązania:
https://bibliotekanauki.pl/articles/915816.pdf
Data publikacji:
2013-01-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
false friends
foreign language learning
language interference
Opis:
This article discuses the results of a questionnaire on English-German false-friend pairs, carried out among four groups of respondents. The first three groups included Polish students of German and English Studies at the University of Rzeszow, while the last one consisted of native speakers of German. The respondents stated that their knowledge of false friends in both languages was good or even profound, however, the results obtained in the practical part of the questionnaire seemed to diverge from their declared knowledge. This suggests the need to pay greater attention to the phenomenon of false friends in foreign language teaching.
Źródło:
Glottodidactica. An International Journal of Applied Linguistics; 2013, 40, 1; 91-102
0072-4769
Pojawia się w:
Glottodidactica. An International Journal of Applied Linguistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical asymmetric double-image encryption and authentication in an interference-based scheme using sparse representation
Autorzy:
Luan, Guangyu
Huang, Caojun
Powiązania:
https://bibliotekanauki.pl/articles/2172860.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
optical encryption
asymmetry
interference
double-image
authentication
Opis:
We report an optical asymmetric scheme for double-image encryption and authentication based on interference using sparse representation. We employ sparse representation and interference to process the Fresnel spectra related with the two original images, and then respectively acquire two ciphertexts and two pairs of private keys. Each original image possesses its corresponding two private keys. Furthermore, the decrypted image is compared with its corresponding plaintext with the aid of a nonlinear correlation for authentication. In the proposed scheme, any information concerning each primary image and comprising its silhouette cannot be recognized even though one, two, or even three masks of the two ciphertexts and two private keys are utilized for decryption. The Fresnel spectrum functions which have different diffraction distances enhance the security of the proposal significantly. Moreover, the proposal also avoids the crosstalk problem. The effectiveness and security of this proposed method are demonstrated via numerical simulations.
Źródło:
Optica Applicata; 2022, 52, 4; 497--510
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozpoznawanie granic ingerencji człowieka w środowisko przyrodnicze
An Attempt to Set Limits on Human Interference in the Environment
Autorzy:
Latawiec, Michał
Powiązania:
https://bibliotekanauki.pl/articles/470494.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
środowisko
ingerencja człowieka
granica
environmental
human interference
boundaries
Opis:
In this article the author discusses the problem of crossing the boundaries of human intervention in the environment that affect both nature and man. Setting limits on human interference in nature (and in man himself) is dependent on the type of the boundaries. For this reason, the author presents the issues of the role and development of human interference in nature, an attempt to justify the current intervention as well as the associated dilemmas. For the purpose of this analysis, the author formulates a definition of borderline interference in nature. Finally, the author gives examples of exceeding the permissible limits.
Źródło:
Studia Ecologiae et Bioethicae; 2016, 14, 1; 77-97
1733-1218
Pojawia się w:
Studia Ecologiae et Bioethicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer simulation of electromagnetic interference from railway electronic power system harmonics
Autorzy:
Gavrilyuk, V.
Zavgorodnij, A.
Myrgorodska, A.
Powiązania:
https://bibliotekanauki.pl/articles/393523.pdf
Data publikacji:
2009
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
zakłócenia elektromagnetyczne
linia toru
electromagnetic interference
track lines
Opis:
In this work a computer simulation was carried out for traction current harmonics distribution in rail lines generated by several locomotives in a feeder zone. Th e inductive and conductive interference in rail circuits was investigated for two AC rail tracks, as well as for diff erent types AC and DC parallel rail tracks.
Źródło:
Archives of Transport System Telematics; 2009, 2, 1; 33-37
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Radio Frequency Interference (RFI) Profile and Determination of Potential Astronomical Radio Sources
Autorzy:
Hamidi, Z. S.
Shariff, N. N. M.
Powiązania:
https://bibliotekanauki.pl/articles/411988.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Radio Frequency Interference (RFI)
radio astronomy
RFI sources
Opis:
In this article, we have recognized a Radio Frequency Interference (RFI) sources that can potentially affect for radio astronomical observation. The main objective of this surveying is to test and qualify the potential of radio astronomical sources that can be observed in Malaysia generally. Analysis process focuses on the high sources that contribute the pollution and the significant region that can be considered for astronomical purpose beginning 1-2000 MHz. It was found that 13 individual sources contribute as a noise and mostly are telecommunication and radio navigation applications. We then compared of the RFI profiles based on three different periods in order to observe the variety of the signals. The main regions that still excellent to do an observation are: 13.36 -13.41 MHz (solar), (25.55-25.67) MHz (Jupiter) and (37.50-38.25) MHz (Continuum) respectively. This work is also an initiative of the International Space Weather Initiative (ISWI) project where Malaysia is one of the countries that involve in e-CALLISTO (Compound Astronomical Low Cost Low Frequency Transportable Observatory) network project. Some suggestions are recommended in order to improve the quality of the radio frequency profile.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 5; 43-49
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Processing of Words Related to the Demands of a Previously Solved Problem
Autorzy:
Kowalczyk, Marek
Powiązania:
https://bibliotekanauki.pl/articles/430750.pdf
Data publikacji:
2014-06-01
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
task-irrelevant processing
interference
inhibition
working memory span
Opis:
Earlier research by the author brought about findings suggesting that people in a special way process words related to demands of a problem they previously solved, even when they do not consciously notice this relationship. The findings concerned interference in the task in which the words appeared, a shift in affective responses to them that depended on sex of the participants, and impaired memory of the words. The aim of this study was to replicate these effects and to find out whether they are related to working memory (WM) span of the participants, taken as a measure of the individual’s ability to control attention. Participants in the experimental group solved a divergent problem, then performed an ostensibly unrelated speeded affective classification task concerning each of a series of nouns, and then performed an unexpected cued recall task for the nouns. Afterwards, a task measuring WM span was administered. In the control group there was no problem-solving phase. Response latencies for words immediately following problem-related words in the classification task were longer in the experimental than in the control group, but there was no relationship between this effect and WM span. Solving the problem, in interaction with sex of the participants and, independently, with their WM span, influenced affective responses to problem-related words. Recall of these words, however, was not impaired in the experimental group.
Źródło:
Polish Psychological Bulletin; 2014, 45, 2; 179-191
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current Situation of Radio Frequency Interference (RFI) Profile at Outdoor and Indoor Sites of Faculty of Applied Sciences, UITM, Malaysia
Autorzy:
Hamidi, Z. S.
Nizamudin, Nur Izzani
Shariff, N. N. M.
Syazwan, M.
Husien, Nurulhazwani
Ali, M. O.
Zainol, N. H.
Ramli, Nabilah
Sabri, S. N. U.
Monstein, C.
Powiązania:
https://bibliotekanauki.pl/articles/1191429.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Radio Frequency Interference (RFI)
radio astronomy
RFI sources
Opis:
This Radio Frequency Interference (RFI) study is currently one of a main sub-research in radio astronomy in Malaysia. The main objective of this monitoring is to test and qualify the potential of radio astronomical sources that can be observed in Malaysia generally. Analysis process focuses at indoor and outdoor of Faculty of Applied Sciences, UITM Shah ALAM, Malaysia (latitude: 03°06.534’N, longitude: 101°50.396’E). There are three mobile network communications that operate at the upper band frequency of 1800MHz, which are Maxis (1805-1830 MHz), Celcom (1830-1855 MHz) and Digi (1855-1880 MHz) for GSM/LTE network. We observed that both sites having the highest and second highest peak at the same frequency of 420 MHz and 1835 MHz with the same source, which were due to mobile application followed by the lowest peak due to radio navigation satellite. We verified that the source of RFI of 1835 MHz at the Faculty of Applied Sciences may come from Celcom mobile telecommunication network signal because there is transmitter on top of two Celcom towers. This observation must be continuously done to ensure that RFI level does not increase drastically and to ensure that allocation spectrum band that was reserved for radio astronomy activities was always protected.
Źródło:
World Scientific News; 2016, 40; 23-33
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measured Interference of LTE Uplink Signals on DVB-T Channels
Autorzy:
Celidonio, M.
Masullo, P. G.
Pulcini, L.
Vaser, M.
Powiązania:
https://bibliotekanauki.pl/articles/308267.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
DVB-T
LTE
TV Interference
UHF Measurements
uplink
Opis:
Because of the decision, taken during the ITU WRC-07, to allocate the upper part of the so-called digital dividend spectrum for mobile services on a co-primary basis with TV broadcast services, the involved stakeholders have a great interest in avoiding any interference caused by signals transmitted in adjacent bands. In this context the paper presents some experimental results of a study addressed to assess the effects produced by an interferential LTE signal transmitted from a user terminal when it is in proximity of a television antenna that receives DVB-T signals. The study has been conducted in the context of collaboration between Fondazione Ugo Bordoni and ISCTI, the scientic and technical body of the Italian Ministry of Economic Development, using high professional laboratory equipments and considering different experimental simulation test setups. Several simulation scenarios have been analyzed and results in terms of protection ratio and protection distance have been carried out.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 4; 74-85
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Design of 4××4 4 Multimode Interference Coupler Based Microring Resonators on an SOI Platform
Autorzy:
Le, T.T.
Cahill, L. W.
Powiązania:
https://bibliotekanauki.pl/articles/308902.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
integrated optics
multimode interference couplers
optical logic gates
Opis:
This paper would like to propose a novel microring resonator based on 4 ×4 multimode interference (MMI) couplers. The device acts as two separate microring resonators just in one structure. The transfer matrix method and the three dimensional beam propagation method (3D-BPM) are used to verify the working principle of the device. The device is then designed on silicon on insulator (SOI) technology. This device may be a very promising building block for optical switches, filters, add-drop multiplexers, delay lines and modulators.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 2; 58-62
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interferencja w przekładzie jako skutek wzajemnych oddziaływań języków (na przykładzie tłumaczeń tekstów z zakresu prawa w parze językowej polski–rosyjski)
Interference Between Languages in Translation (Observations Based on Polish– Russian Translations of Legal Texts)
Autorzy:
Stec, Wanda
Powiązania:
https://bibliotekanauki.pl/articles/38655131.pdf
Data publikacji:
2020-12-31
Wydawca:
Polska Akademia Nauk. Instytut Slawistyki PAN
Tematy:
language interference
legal translation
translation error
interlinguistic contacts
Opis:
This article considers the issue of language transfer in translation. External interference is one of the most common reasons behind the lack of equivalence between the source text and the target text. Negative transfer leads to the lack of linguistic correctness as well as to modifying or altering the meaning of the translated text. In the didactics of translation, the rationale behind identifying and analysing linguistic errors is to develop and improve translation skills. The issue in focus is presented based on translations of legal texts in the Polish–Russian language pair.
W tekście przedstawiono zagadnienia transferu językowego w przekładzie. Interferencja zewnętrzna uważana jest za jedną z podstawowych przyczyn zakłócenia ekwiwalencji między tekstem źródłowym a docelowym tłumaczenia. Transfer negatywny przyczynia się do braku poprawności językowej, modyfikacji czy zmiany sensu w przetłumaczonym tekście. W dydaktyce przekładu identyfikacja i analiza błędów służą wyrobieniu i doskonaleniu umiejętności translatorskich. Temat zaprezentowano na materiale tłumaczeń prawniczych w parze językowej polski–rosyjski.
Źródło:
Studia z Filologii Polskiej i Słowiańskiej; 2020, 55
0081-7090
2392-2435
Pojawia się w:
Studia z Filologii Polskiej i Słowiańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ukraiński system onimiczny dawnej ziemi chełmskiej jako wyznacznik tożsamości narodowej
The Ukrainian Onymic System of the Former Chełm Lands as a Determiner of National Identity
Autorzy:
Mytnik, Irena
Powiązania:
https://bibliotekanauki.pl/articles/2031228.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
personal names
national identity
language interference
anthroponymic system
Źródło:
Slavia Orientalis; 2020, LXIX, 3; 639-654
0037-6744
Pojawia się w:
Slavia Orientalis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An attempt to set limits on human interference in the environment
Rozpoznawanie granic ingerencji człowieka w środowisko przyrodnicze
Autorzy:
Latawiec, Michał
Powiązania:
https://bibliotekanauki.pl/articles/1062831.pdf
Data publikacji:
2020-12-31
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
środowisko
ingerencja człowieka
granica
environment
human interference
boundaries
Opis:
In this article, the author discusses the problem of crossing the boundaries of human intervention in the environment that affect both nature and man. Setting limits on human interference in nature (and in man themselves) is dependent on the type of boundaries. For this reason, the author presents the issues of the role and development of human interference in nature, an attempt to justify the current intervention as well as the associated dilemmas. For the purpose of this analysis, the author formulates a definition of borderline interference in nature. Finally, the author gives examples of exceeding the permissible limits.
W niniejszym artykule autor omawia problem takiego przekraczania granic ingerencji człowieka w środowisko naturalne, które oddziałuje zarówno na naturę, jak i człowieka. Ustalenie granic ingerencji człowieka w naturę (i w siebie samego) jest zależne od rodzaju tych granic. Z tego względu autor prezentuje kwestie roli i wzrostu ingerencji człowieka w naturę, próbę usprawiedliwienia współczesnych ingerencji i związane z tym dylematy. Dla potrzeb tej analizy zostaje zdefiniowana linia graniczna ingerencji w naturę. W części końcowej wskazane są przykłady rozszerzania dopuszczalnych ograniczeń.
Źródło:
Studia Ecologiae et Bioethicae; 2020, 18, 5; 87-96
1733-1218
Pojawia się w:
Studia Ecologiae et Bioethicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wiener Filtering Applied to Conducted EMI Estimation in Soft Switching Inverter
Autorzy:
Musznicki, P.
Chrzan, P. J.
Mandrek, S.
Powiązania:
https://bibliotekanauki.pl/articles/1203943.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
wiener filtering
estimation
electromagnetic
interference
resonant power
conversion
Opis:
This paper presents an estimation method of the conducted electromagnetic interference EMI emissions in soft switching inverters. Estimation process is carried out by a number of Wiener filters, which represent different operation conditions as reflected through subsequent power converter states determined by initial commutation event conditions and propagation paths layout. Filters are fed by a semiconductor power switch voltage or current waveforms regarded as sources of perturbation. The EMI emissions are measured on the line impedance stabilization network LISN terminals. Optimal filter adaptation is effected in the frequency domain by measuring input and cross power signal spectra. Analysis of parallel quasi resonant dc link voltage inverter PQRDCLI is outlined to distinguish filters assigned for inverter operation and those for an external DC/DC converter interaction. Experimental results are given to illustrate the Wiener filtering estimation quality. Possibility of detailed decomposition of the LISN-EMI waveforms is depicted in both time and frequency domain. Comparative analysis of frequency responses for PQRDCLI link voltage changes is given.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2008, 14, 2; 25-28
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Attentional bias and emotion in older adults: Age-related differences in responses to an emotional Stroop task
Autorzy:
Dunajska, Magdalena
Szymanik, Anna
Trempała, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/430332.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Stroop task
emotional interference
older adults
emotional regulation
Opis:
The purpose of the study was to examine whether older adults show an emotional interference effect in a Stroop task, and whether their RTs differ with regard to age, gender and tendencies of mood regulation (to improvement and/or deterioration). The sample consisted of 60 participants at the age from 65 to 85. Emotional version of Stroop task and the Mood Regulation Scales were used. The results showed no significant differences in RTs to emotional and neutral words. Unexpectedly, a speeding effect was observed with the age of women. It appeared also that the effect of mood regulation tendencies was not significant for RTs. The last two effects are not consistent with the literature on cognitive and emotional aging.
Źródło:
Polish Psychological Bulletin; 2012, 43, 2; 86-92
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the indicator diagrams smoothing on the indicated parameters of marine diesel engines
Autorzy:
Pawletko, R.
Powiązania:
https://bibliotekanauki.pl/articles/244800.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
indicator diagrams
smoothing the interference
engine indicated parameters
Opis:
The topic of this article is to analyze the influence of indicator diagrams smoothing methods on diagnostic parameters determined on their basis such as the maximum combustion pressure, mean indication pressure and heat release characteristics. Indicator diagrams of marine engines are subject to serious distortions arising primarily from the measuring method for in-cylinder pressure. Measurements are performed on the indicator valve which connect with the combustion chamber through the indicator channel. Depending on the engine design the channel length can reach a considerable length and introduces significant distortion in both the phase and amplitude of the pressure signal. Further analysis of the indicator diagram eg. in order to determine the heat release characteristics requires the use of methods of smoothing and filtering of interference. The results confirm no effect of indicator diagram smoothing for the value of the mean indicated pressure, which is one for the most important indicated parameters. A significant influence of smoothing on the maximum value of the heat release rate was observed. The differences in this case exceed 50%. At the same time confirmed that the heat release rate curve determined on the basis of a diagram without smoothing, carry a high level of interference, which precludes their practical use. Smoothing allows getting heat release rate curves that carry vital information about the working process of the engine.
Źródło:
Journal of KONES; 2015, 22, 2; 169-176
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
WPŁYW JĘZYKA ANGIELSKIEGO JAKO PIERWSZEGO JĘZYKA OBCEGO NA SZYK WYRAZÓW W ZDANIACH W JĘZYKU NIEMIECKIM JAKO DRUGIM JĘZYKU OBCYM U POLSKICH UCZNIÓW Z PODSTAWOWĄ ZNAJOMOŚCIĄ JĘZYKA NIEMIECKIEGO. ANALIZA BŁĘDÓW
The Influence of English as the First Foreign Language on the Word Order of German as the Second Foreign Language in the Group of Polish Students with the Basic Knowledge of German Language. Error Analysis
Autorzy:
Hinc, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/445036.pdf
Data publikacji:
2011-12-01
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
interference,
word order of German language, error analysis
Opis:
Presented paper is a report of a finished research that deals with the problem of interference in the multilingual acquisition of grammatical competence. The aim of the quantitative study was to investigate the influence of English as the first foreign language on the word order of German as a second foreign language in the group of Polish secondary school students with basic knowledge of German language.
Źródło:
Acta Neophilologica; 2011, XIII; 49-57
1509-1619
Pojawia się w:
Acta Neophilologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Negation im Alznerischen
The negation in the Halcnovian lect
Autorzy:
Dolatowski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/679656.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Halcnovian lect
German dialectology
negation
language contact
interference
Opis:
The Halcnovian lect has been spoken in daily communication in Hałcnów, a village in the former Bielsko-Biała’s language island, until 1945. Today it is almost extinct. The lect is one of Silesian East German dialects, but it developed independently for about 500 years. Because of the former language situation in the village, also the triglossia, there are elements and constructions that may be loaned from Polish or German. In this paper, first, the story of the village is presented, a short description of the Halcnovian grammar follows. The main part of the article contains a description of all possibilities to negate in the lect, there are also listed many examples. Possible foreign influences are investigated also. The analysis shows that the Halcnovian negation was lightly, but evidently influenced by other languages and that is a proof for a long and intensive language contact in the village.
Źródło:
Acta Universitatis Lodziensis. Folia Germanica; 2018, 14; 33-41
2449-6820
Pojawia się w:
Acta Universitatis Lodziensis. Folia Germanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possible Solutions for Long-standing Problems Involving Old English Nominal Forms
Autorzy:
L, White, David
Powiązania:
https://bibliotekanauki.pl/articles/888818.pdf
Data publikacji:
2020-09-14
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
West Germanic
Old English
Celtic influence
equivalence interference
Opis:
Solutions are presented, most involving Celtic influences in West Germanic (WG) dur- ing the ancient period, for some long-standing problems involving nominal forms. The M N-SG forms of /n/-stems in WG may be seen as due to loss of /-n/ (in analogical /-ͻͻn/) having happened after shortening. Apparent replacement of the F G-SG by the D-SG in WG may be seen as due to the D-SG of the F personal pronoun being employed, in “external possession”, as a kind of indirect reflexive, after /siin-/ became limited (for reasons connected with Celtic influence) to M SG meaning. This case has analogues in Romance. Final /-s/ in the A-PL of M /a/-stems may be seen as due to Celtic influence causing /-nz/ to be replaced by /-ns/.
Źródło:
Anglica. An International Journal of English Studies; 2020, 29/2; 27-53
0860-5734
Pojawia się w:
Anglica. An International Journal of English Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Global Foreign Accent Rating of Code-Switched and L2-Only Sentences
Autorzy:
Šimáčková, Šárka
Podlipský, Václav Jonáš
Powiązania:
https://bibliotekanauki.pl/articles/620764.pdf
Data publikacji:
2016-06-01
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
phonetic interference
bilingual mode
code-switching
voice onset time
Opis:
Recent studies of short-term phonetic interference suggest that code-switching can lead to momentary increases in L1 influence on L2. In an earlier study using a single acoustic measure (VOT), we found that Czech EFL learners’ pronunciation of English voiceless stops had shorter, i.e. more L1-Czech-like, VOTs in code-switched compared to L2-only sentences. The first aim of the current study was to test the prediction that native listeners would judge the code-switched English productions as more foreign-accented than the L2-only productions. The results provide only weak support for this prediction. The second aim was to test whether more native-like VOT values would correlate with improved accentedness scores. This was confirmed for sentence-initial stops.
Źródło:
Research in Language; 2016, 14, 2; 149-164
1731-7533
Pojawia się w:
Research in Language
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 345

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