Autor: P.B. - Katalog OPAC zbiorów

Skocz do pozycji: 31.

Tytuł:: A New Method of Teaching Spatial Orientation to the Blind
Autorzy:: Hojan, E.
Jakubowski, M.
Talukder, A.
Wereda, H.
Furmann, A.
Ewertowski, R.
Skrodzka, E.
Perz, P.
Pękala, P.
Bogusz, E.
Lubawy, H.
Tomaszewski, F.
Czechyra, B.
Orczyk, M.
Szymański, G.
Niewiarowicz, M.
Hojan-Jezierska, D.
Jezierska, A.
Powiązania:: https://bibliotekanauki.pl/articles/1490435.pdf
Data publikacji:: 2012-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 43.66.Yw
Opis:: Elaboration of a new method of teaching spatial orientation to blind and visually handicapped persons base on urban environment sounds was shown. Task 1 is a questionnaire inquiry on the problems of the blind moving in a big city. In Task 2 a preliminary selection and classification of the acoustic signals and vibrations that can be useful for spatial orientation was made. In Task 3 an analysis of acoustic signals for sound signalisation at pedestrian crossings was made. Some solutions for acoustic signalization were proposed. In Task 4 sounds and vibrations necessary for a library of acoustic events and situations characteristic of a city were recorded. In Task 5 the library was created and arranged to be ready to be used by teachers in the spatial orientation training. The most important outcome of the study was to develop a method of spatial orientation teaching with employment of sounds and verification of the method (Task 6). After verification it is concluded that the method is useful for spatial education of the blind at different levels of their education.
Źródło:: Acta Physica Polonica A; 2012, 121, 1A; A-005-A-008
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 32.

Tytuł:: A new record expanding the range of Amphidromus sinensis (Benson, 1851) (Gastropoda: Camaenidae)
Autorzy:: Tripathy, B.
Sajan, S.
Sethy, P.G.S.
Chatterjee, P.
Chandra, K.
Powiązania:: https://bibliotekanauki.pl/articles/84563.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Źródło:: Folia Malacologica; 2018, 26, 4
1506-7629
Pojawia się w:: Folia Malacologica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 33.

Tytuł:: A new software tool for transient thermal analysis based on fast IR camera temperature measurement
Autorzy:: Chatzipanagiotou, P.
Strąkowska, M.
De Mey, G.
Chatziathanasiou, V.
Więcek, B.
Kopeć, M.
Powiązania:: https://bibliotekanauki.pl/articles/114612.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: transient thermal analysis
IR thermography
Nyquist plot
time constants
cumulative structure function
Opis:: A new software tool for transient thermal analysis based on thermographic measurement of temperature is presented. In the proposed approach, temperature change after applying or removing power can be measured by a thermal camera or any contact temperature sensor. The software calculates thermal impedance in frequency domain and represents it in the form of the Nyquist plot. In addition, thermal time constant spectrum and cumulative structure function are evaluated. The software was developed in Matlab environment using in-built procedures for transfer function estimation. For the validation of the proposed tool, the results are compared with ones obtained using commercially available software.
Źródło:: Measurement Automation Monitoring; 2017, 63, 2; 48-51
2450-2855
Pojawia się w:: Measurement Automation Monitoring
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 34.

Tytuł:: A new stratigraphic position of some Early Pleistocene deposits in central Poland
Autorzy:: Bujak, Ł.
Woronko, B.
Winter, H.
Marcinkowski, B.
Werner, T.
Stachowicz-Rybka, R.
Żarski, M.
Woźniak, P. P.
Rosowiecka, O.
Powiązania:: https://bibliotekanauki.pl/articles/2060173.pdf
Data publikacji:: 2016
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Late Miocene
Early Pliocene
Early Pleistocene
pollen analysis
palaeomagnetism
mineralogy
Central Poland
Opis:: A new borehole in Rożce (SW Mazovian Lowland) drilled in 2012, combined with a wide variety of research methods (palaeomagnetism, palynological analysis, studies of plant macroremains and textural features of deposits) shed new light on the age and stratigraphic position of the Early Pleistocene deposits, formerly assigned as the Lower Pleistocene. The study focuses on the deposits from 50.7-104.0 m depth, between glacial till of the Nidanian Glaciation (ca. 0.9 Ma) and the Poznań Clays (ca. 5.322 Ma). The deposits situated directly underneath the till (50.7-60.2 m) are related to the Nidanian Glaciation and show a reversed polarity and correlate with the end of the Matuyama Epoch. The deposits from 60.2-104.0 m depth were accumulated during the Early Pliocene, i.e. approximately 5.332-4.6 million years ago. They appear to correlate with the middle part of the Gilbert Palaeomagnetic Epoch and thus they are considerably older than previously thought. The cored section indicates a stratigraphic gap of about 3.5 Ma from the Lower Pliocene to the first advance of the Scandinavian ice sheets into Poland, which are thought to have occurred in the early Middle Pleistocene. The analysed deposits accumulated under variable climatic conditions showing two periods with significant aridity alternated with two periods of increased humidity. Deposits of the arid periods contain no pollen, butaeolian sand quartz grains are found. During periods of more humid climate the area was covered by various types of mixed forest.
Źródło:: Geological Quarterly; 2016, 60, 1; 238--251
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 35.

Tytuł:: A Note on Total Graphs
Autorzy:: Forouhandeh, S.F.
Jafari Rad, N.
Vaqari Motlagh, B.H.
Patil, H.P.
Pandiya Raj, R.
Powiązania:: https://bibliotekanauki.pl/articles/31339326.pdf
Data publikacji:: 2015-08-01
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: total graph
central graph
middle graph
Mycielski graph
Opis:: Erratum Identification and corrections of the existing mistakes in the paper On the total graph of Mycielski graphs, central graphs and their covering numbers, Discuss. Math. Graph Theory 33 (2013) 361-371.
Źródło:: Discussiones Mathematicae Graph Theory; 2015, 35, 3; 585-587
2083-5892
Pojawia się w:: Discussiones Mathematicae Graph Theory
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:: A novel functional MgO ∙ SiO2/polyhedral oligomeric silsesquioxane hybrids as an active filler of polypropylene
Autorzy:: Ambrożewicz, D.
Jakubowska, P.
Kloziński, A.
Nowacka, M.
Dudziec, B.
Andrzejewska, E.
Jesionowski, T.
Marciniec, B.
Powiązania:: https://bibliotekanauki.pl/articles/777872.pdf
Data publikacji:: 2013
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: Magnesium silicate
Polyhedral oligomeric silsesquioxane
polypropylene
polymer composites
mechanical properties
Opis:: New organic/inorganic hybrid fillers were obtained by mechanical modification of magnesium silicate with selected polyhedral oligomeric silsesquioxane and characterized afterwards. MgO ∙ SiO2 was precipitated in a water system. The effect of chemical modification of magnesium silicate surface on their physicochemical properties was determined. Functionalization was carried out with the use of different amount of (1-(3-hydroxypropyl)dimethylsiloxy- 3,5,7,9,11,13,15-hepta(isobutyl)pentacyclo-[9.5.1.13, 9.15, 15.17, 13]octasiloxane). The polypropylene composites of 0.5, 1.0 and 1.5 wt.% modified by 10 weight parts by the mass of the filler were also produced. For the obtained polypropylene composites measurements of the tensile strength, Young’s modulus and elongation at break were performed.
Źródło:: Polish Journal of Chemical Technology; 2013, 15, 4; 42-48
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:: A novel proteomic approach to analyse methionine oxidation reveals protein oxidation patterns in Arabidopsis seeds
Autorzy:: Meimoun, P.
Valot, B.
Job, D.
Bailly, C.
Powiązania:: https://bibliotekanauki.pl/articles/80575.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: conference
reactive oxygen species
nucleic acid
protein
oxidation
methionine
methionine sulphoxide reductase
protein oxidation
Arabidopsis
seed
Źródło:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:: A Novel Software-Defined Networking Controller : the Distributed Active Information Model (DAIM)
Autorzy:: Pupatwibul, P.
Banjar, A.
Hossain, M. I.
Braun, R.
Moulton, B.
Powiązania:: https://bibliotekanauki.pl/articles/226996.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: distributed network
OpenFlow
DAIM model
software defined networking
next generation networks
Opis:: This paper presents a new OpenFlow controller: the Distributed Active Information Model (DAIM). The DAIM controller was developed to explore the viability of a logically distributed control plane. It is implemented in a distributed way throughout a software-defined network, at the level of the switches. The method enables local process flows, by way of local packet switching, to be controlled by the distributed DAIM controller (as opposed to a centralised OpenFlow controller). The DAIM ecosystem is discussed with some sample code, together with flowcharts of the implemented algorithms. We present implementation details, a testing methodology, and an experimental evaluation. A performance analysis was conducted using the Cbench open benchmarking tool. Comparisons were drawn with respect to throughput and latency. It is concluded that the DAIM controller can handle a high throughput, while keeping the latency relatively low. We believe the results to date are potentially very interesting, especially in light of the fact that a key feature of the DAIM controller is that it is designed to enable the future development of autonomous local flow process and management strategies.
Źródło:: International Journal of Electronics and Telecommunications; 2018, 64, 2; 209-216
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:: A nuclear technique for the elemental quantitative analysis: The proton-induced X-ray emissio
Jądrowa technika ilościowej analizy elementarnej : Emisja promieni X indukowana przez protony
Autorzy:: Buso, G
Colauttl, P
Moschini, G
Stievano, B.M
Powiązania:: https://bibliotekanauki.pl/articles/945079.pdf
Data publikacji:: 1986
Wydawca:: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Źródło:: Acta Universitatis Lodziensis. Folia Biochimica et Biophysica; 1986, 5
0208-614X
Pojawia się w:: Acta Universitatis Lodziensis. Folia Biochimica et Biophysica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:: A probabilistic method for certification of analytically redundant systems
Autorzy:: Hu, B.
Seiler, P.
Powiązania:: https://bibliotekanauki.pl/articles/331388.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: avionics
certification system
safety system
critical system
reliability
fault detection
fault tolerant system
awionika
system certyfikacji
system bezpieczeństwa
detekcja uszkodzeń
system tolerujący uszkodzenia
Opis:: Analytical fault detection algorithms have the potential to reduce the size, power and weight of safety-critical aerospace systems. Analytical redundancy has been successfully applied in many non-safety critical applications. However, acceptance for aerospace applications will require new methods to rigorously certify the impact of such algorithms on the overall system reliability. This paper presents a theoretical method to assess the probabilistic performance for an analytically redundant system. Specifically, a fault tolerant actuation system is considered. The system consists of dual-redundant actuators and an analytical fault detection algorithm to switch between the hardware components. The exact system failure rate per hour is computed using the law of total probability. This analysis requires knowledge of the failure rates for the hardware components. In addition, knowledge of specific probabilistic performance metrics for the fault detection logic is needed. Numerical examples are provided to demonstrate the proposed analysis method.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2015, 25, 1; 103-116
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:: A rapid, convient and diversified-multicomponent synthesis and characterization of pyrano[2,3-b]indoles
Autorzy:: Ghodasara, H. B.
Singala, P. M.
Shah, V. H.
Powiązania:: https://bibliotekanauki.pl/articles/412134.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: 1,3-bifunctional synthon
Pyrano[2,3-b]indoles
multi component reaction
non-chromatographic metod
Opis:: A series of pyrano[2,3-b]indoles, was efficiently synthesized via one-pot, multi component reaction (MCRs) of 1,3-bifunctional synthon(malononitrile/ethylcyano acetate), aromatic aldehydes and oxiindole in the presence of various basic catalyst. The key advantages of this process are high yields, shorter reaction times, easy work-up, and purification of products by non-chromatographic method.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 7; 69-76
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:: A scanner-based approach to soil profile-wall mapping of root distribution
Autorzy:: Dauer, J M
Withington, J.M.
Oleksyn, J.
Chorover, J.
Chadwick, O.A.
Reich, P.B.
Eissenstat, D.M.
Powiązania:: https://bibliotekanauki.pl/articles/41302.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: soil profile
root distribution
soil profile-wall mapping
scanner
soil property
scanning image
soil core
Opis:: Root distribution sampling techniques are often inaccurate, time consuming and costly. We present an inexpensive approach to soil profile-wall mapping using a desktop scanner that allowed us to spend reduced time in the field. The scanner was pressed onto the vertical surface of a 1 x 1 m soil pit and images of the roots were taken in situ. In a common garden planting of eleven, 30-year-old conifer and hardwood tree species in Poland, we compared root counts (number of roots cm–2) obtained by this method with independent measurements of root length density (RLD) obtained from soil cores. We found a positive correlation (Spearman rank correlation r=0.93; P<0.001) suggesting general agreement of the two approaches in ranking among the species. Soil coring as well as grid mapping with plastic overlays took a longer total time for quantifying root distribution than the scanning procedure. The desktop scanner approach we developed is an inexpensive, time efficient and accurate way of quantifying root distribution and abundance that allows a unique coupling of root data to soil properties.
Źródło:: Dendrobiology; 2009, 62; 35-40
1641-1307
Pojawia się w:: Dendrobiology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:: A Simplified Connection of HEV AC/AC Powertrain
Autorzy:: Dobrucký, B.
Drgoňa, P.
Kaščák, S.
Praženica, M.
Pavlásek, P.
Powiązania:: https://bibliotekanauki.pl/articles/314458.pdf
Data publikacji:: 2018
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: hybrid vehicle
converter
powertrain
simulation tests
pojazd hybrydowy
konwerter
układ napędowy
badania symulacyjne
Opis:: The paper deals with a simplified configuration of series HEV hybrid vehicles. Simplification consists of the downsizing of auxiliary 4QC converter needed for hybrid operational modes. Besides, operation in autonomous traction accu-battery modes uses direct 0x5 configuration of traction 3x5 McX matrix converter. Such a configuration can be derived from that main traction converter. Major advantages of simplified connection are beside smaller 4QC converter size – possible little bit better efficiency of the HEV powertrain. Chosen operational modes of modelling and simulation of traction powertrain configuration are focused on start-up and traction drive of HEV powered by ICE, start-up of ICE powered by AB accu-battery using SG as a starter, and traction drive powered by AB accu-battery and braking of traction motor moving energy into accu-battery AB. The results of all simulation experiments are given in the paper.
Artykuł dotyczy uproszczonej konfiguracji pojazdów hybrydowych HEV. Uproszczenie polega na zmniejszeniu konwertera 4QC wymaganego w trybach hybrydowych. Poza tym tryb pracy w trybie autonomicznej trakcji w trybie akumulatorowym wykorzystuje bezpośrednią konfigurację 0x5 trakcyjnego konwertera macierzy 3x5 McX. Taka konfiguracja może być uzyskana z tego głównego konwertera trakcyjnego. Głównymi zaletami uproszczonego połączenia jest mniejsza wielkość konwertera 4QC - możliwa nieco lepsza wydajność układu napędowego HEV. Dostępne są tryby pracy, modelowanie i układ napędowy układu napędowego skoncentrowany na rozruchu i napędzie trakcyjnym HEV napędzanego przez ICE, rozruch ICE zasilany akumulatorem AB z wykorzystaniem SG jako rozrusznika i napęd trakcyjny zasilany przez AB accu - bateria i hamowanie silnika trakcyjnego, które przenosi energię do akumulatora AB. Wyniki wszystkich eksperymentów symulacyjnych podano w pracy.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 6; 831-834, CD
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:: A Simplified Design Methodology for MOSFET-Only Wideband Mixer
Autorzy:: Ortigueira, E.
Bastos, I.
Oliveira, L. B.
Oliveira, J. P.
Goes, J.
Powiązania:: https://bibliotekanauki.pl/articles/227194.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: CMOS mixers
MOSFET-only circuits
Gilbert cell
active mixers
wideband mixers
Opis:: In this paper we present a MOSFET-only implementation of a wideband Gilbert Cell. The circuit uses a commongate topology for a wideband input match, capable to cover the Wireless Medical Telemetry Service (WMTS) frequency bands of 600 MHz and 1.4 GHz. In this circuit the load resistors are replaced by transistors in triode region, to reduce area and cost, and minimize the effects of process and supply variations and mismatches. In addition, we obtain a higher gain for the same DC voltage drop, with a reduced impact on the noise figure (NF). The performance of this topology is compared with that of a conventional mixer with load resistors. Simulation results show that a peak gain of 20.6 dB (about 6 dB improvement) and a NF about of 11 dB for the 600 MHz band. The total power consumption is 3.6 mW from a 1.2 V supply.
Źródło:: International Journal of Electronics and Telecommunications; 2011, 57, 4; 503-509
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:: A spring model for perfect or imperfect contact interfaces
Autorzy:: Delsanto, P. P.
Ruffino, E.
Scalerandi, M.
Batra, N. K.
Mignogna, R. B.
Powiązania:: https://bibliotekanauki.pl/articles/331734.pdf
Data publikacji:: 1997
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: A spring model for the simulation of the propagation of ultrasonic pulses through perfect or imperfect interfaces is proposed in the framework of the local interaction simulation approach (LISA). To demonstrate the applicability of the technique (which is particularly suitable for parallel processing) a few examples of numerical simulation of pulse propagation through interfaces with a delamination are presented and discussed.
Źródło:: Hydroacoustics; 1997, 1; 257-262
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

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