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Wyświetlanie 1-15 z 64
Tytuł:
Maximal correlation in path analysis
Autorzy:
Wysocki, W.
Powiązania:
https://bibliotekanauki.pl/articles/1340921.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Applicationes Mathematicae; 1991, 21, 2; 225-233
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polacy na frontach II wojny światowej : 1939-1945
Autorzy:
Bałuk, Stefan.
Współwytwórcy:
Bałuk, Stefan. Ilustracje
Michałowski, Marian. Opracowanie
Karcz, Jan W. Recenzja
Wysocki, Tadeusz A. Recenzja
Data publikacji:
1995
Wydawca:
Warszawa : Ars Print
Tematy:
II wojna światowa (1939-1945)
Polacy
Ilustracje
Opis:
Jeszcze o książce Stefana Bałuka o "Polakach na frontach II wojny światowej"
"Polacy na frontach II wojny światowej 1939-1945"
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
Band Mixing Effects in Quantum Well Magnetoexcitons
Autorzy:
Wysocki, R.
Bardyszewski, W.
Schoser, S.
Potemski, M.
Powiązania:
https://bibliotekanauki.pl/articles/1968450.pdf
Data publikacji:
1997-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.70.Ej
71.35.Ji
Opis:
The influence of intersubband mixing in quantum wells of semiconductors with zinc-blende structure is studied both experimentally and theoretically. A multiband magnetoexciton model is described which takes into account k∙p mixing between valence subbands and the effective Coulomb interaction for an arbitrary confinement potential shape. Theoretical results reproduce very well the photoluminescence excitation spectra of GaAs/AlGaAs single quantum wells of various widths. In particular, the characteristic avoided crossing between the lowest light-hole exciton Landau level and excited heavy-hole exciton Landau level occurring at σ¯ polarization is accurately described by our theory.
Źródło:
Acta Physica Polonica A; 1997, 92, 5; 1067-1071
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Możliwości wykorzystania pakietu GeoSET jako programu narzędziowego dla potrzeb geodezyjnych opracowań metodą „elektronicznego stolika”
The possibilities o f the application o f the GeoSET as a computer program fo r the geodetic elaboration by the method o f „electronic table.
Autorzy:
Wysocki, J.
Sączuk, J.
Buczek, W.
Powiązania:
https://bibliotekanauki.pl/articles/130173.pdf
Data publikacji:
2001
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
GEOset
rzeźba terenu
elektroniczny stolik
terrain relief
electronic table
Opis:
The relief is one of the main elements of information on the land necessary for civil and environmental engineering. The basic form of this information is still a contour map and digital terrain model (DTM). The prevalent method of land relief presentation is the contour technique which associates easy apprehension of the land configuration and smooth assessment of the its quantitative features such as determination of level points, gradients or location of profile lines. In the paper is presented proposed method for generating the in situ digital terrain model and contour maps.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2001, 11; 2-1-2-4
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the effect of various nitrogen forms on the Lupinus albus seed protein composition
Autorzy:
Ciesiolka, D
Aniszewski, T.
Wysocki, W.
Pilarski, R.
Gulewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/57059.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Lupinus albus
protein
seed
protein composition
botany
fractional composition
protein yield
protein content
lupin
nitrogen form
Opis:
The influence of different nitrogen forms: (N2), [N2+(NH4++NO3-)], (NH4+), (NO3-), (NH4++NO3-) and (-NH2) on changes of albumin, globulin, prolamin-glutelin, non-fractioned nitrogen and non-protein nitrogen fractions of the protein seed of alkaloid-low content Lupinus albus L. cv. Butan has been studied. The experiments were performed in a greenhouse on perlite using in all cases the constant P, K, Mg and micronutrients (B, Zn, Mn, Cu, Mo, Fe) fertilization. The control was the treatment without any nitrogen support (Nd). It was clearly shown that nitrogen form has significant effect not only on the seed yield and seed protein content, but also on the composition of protein fractions and on the biological value of lupin protein. The main protein fraction of the seeds from all treatments were albumins (16.73-26.10 mgN/g). Among all the treatments, the highest level of globulin was observed for the seeds of plant growing with the symbiotic nitrogen form (15.26 mgN/g), while the lowest one for the control (Nd) (6.86 mgN/g). Symbiotic nitrogen (N2) treatment clearly increased the glutelin-prolamin fraction while the addition of mineral nitrogen (NH4++NO3-) decreased this fraction from 8.40 to 4.48 mgN/g. The lowest level of the glutelin-prolamin fraction was in the absence of any nitrogen (Nd). Non-protein fraction (Nnp) was highest in the case of plants treated with (-NH2) (9.92 mgN/g), and the lowest in the absence of nitrogen (Nd) (4.90 mgN/g). The level of non-fractioned nitrogen (Nr), with exception of [N2+(NH4++NO3-)] and -NH2 treatments, was closest to the start material. The protein fractions (albumins, globulins and glutelins and prolamins) were also electrophoretically characterized. These analysis confirmed the changes in protein composition of particular fractions under the effect of various nitrogen forms used as a fertilizer.
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A numerical analysis of a double multi-leaf spring model
Autorzy:
Wysocki, J.
Krasoń, W.
Powiązania:
https://bibliotekanauki.pl/articles/245995.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
FEM
numerical models
double multi-leaf spring
suspension of a motor truck
Opis:
The use of a double spring in a vehicle suspension as a combination of elastic components of characteristics which are approximate to linear ones gives a nonlinear suspension nature, which should approximately meet the criterion of car motion smoothness connected with keeping the frequency of the free vibrations of the a motorcar body in the range of l - 2 Hz, in the whole range of load changes (cargo) [see references 8, 10]. The subject of considerations is a prototypical double spring that consists of a four-leaf main spring and a two-leaf auxiliary spring and is meant for the family of motor trucks (delivery trucks) of a total mass of about 3,51. The presence of a clearance between the main spring and the auxiliary spring is the specificity of the aforementioned structural solution. In the present study, there are presented different variants of FEM numericał models ofa double spring as well as selected aspects of their applications at the stage of the research on the displacements and deformations of selected structural components. The structures ofa two-dimensional beam model, a three-dimensional shell model and a solid model of a double spring are discussed. Moreover, the study discusses different approaches in the modelling of the effect of contact between particular leaves and their influence on analysis results. Selected model tests results were compared with experimental research results.
Źródło:
Journal of KONES; 2009, 16, 1; 541-550
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evolution of the wake in a turbine blade passage
Ewolucja śladu spływowego w międzyłopatkowym kanale turbinowym
Autorzy:
Bijak-Bartosik, E.
Elsner, W.
Wysocki, M.
Powiązania:
https://bibliotekanauki.pl/articles/280216.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
rotor-stator interaction
blade passage
wake convection
turbomachinery
Opis:
The aim of this paper is an experimental analysis of an unsteady flow field in the blade channel where the unsteadiness was generated by the rotating wheel of cylindrical rods. The measurements were performed with the use of hot-wire technique and double X-wire probe. The application of phase averaging allowed one to reproduce wake motion, which was possible through determination of velocity and turbulence intensity distributions. The role of different mechanisms of wake deformation is discussed. It was also shown that the production of turbulent kinetic energy occurs when the principal stresses within the wake interact with the mean strain.
W pracy przedstawiono wyniki eksperymentalnej analizy niestacjonarnego przepływu przez kanał łopatkowy turbiny, dla którego to przypadku zaburzenia generowane były na wlocie do kanału przez wirujący wieniec prętów cylindrycznych. Pomiary zostały przeprowadzone przy wykorzystaniu dwuwłókowej sondy termoanemometrycznej typu X dla gęstej siatki pomiarowej. Zastosowanie metody uśredniania fazowego pozwoliło na odtworzenie ruchu śladu i analizę jego deformacji w przepływie przez palisadę w kolejnych chwilach czasu. W artykule podjęto dyskusję roli różnych mechanizmów odpowiedzialnych za deformację śladu, wskazując na dominującą rolę konwekcji. Wykazano, że za wzrost energii kinetycznej turbulencji w śladzie odpowiedzialna jest produkcja energii kinetycznej turbulencji będąca efektem oddziaływania naprężeń turbulentnych w śladzie z silnym gradientem prędkości w kanale międzyłopatkowym.
Źródło:
Journal of Theoretical and Applied Mechanics; 2009, 47, 1; 41-53
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental verification of numerical test results for a double multi- leaf spring
Autorzy:
Krasoń, W.
Wysocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/242087.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
experimental verification
FEM
numerical models
double multi-leaf spring
suspension of a motor truck
Opis:
A double spring used in the vehicle suspension, as a combination of spring elements of characteristics close to linear ones, actually provides non-linear suspension characteristics. Due to requirements for the truck suspension being designed, the spring characteristics in the whole range of load changes should meet the vehicle motion smoothness related to keeping the frequency of own suspension vibrations within a range of l-2 Hz [8, l0]. A prototype double spring made of a four-leaf main spring and two- leaf auxiliary spring (Fig. 1) makes a subject of considerations. Characteristic features of that structural solution includes a clearance between the main spring and the auxiliary spring. This work presents the results of numerical tests for three models of MES double spring [23] that were compared with experimental test results. An evaluation of usability of individual numerical models was made for representation of a double spring characteristics, contact between individual leaves and regular stress in the main leaf (the so-called safety leaf). The smallest differences between the stress results obtained from numerical tests compared to the laboratory tests, for the beam and shell models, have been obtained only for one extreme main (longest) leaf.
Źródło:
Journal of KONES; 2009, 16, 3; 185-193
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selection of elastic suspension elements for the special use vehicle
Autorzy:
Borkowski, W.
Michalowski, B.
Paplinski, K.
Rybak, P.
Wysocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/242198.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
special vehicle
suspension
spring
elastic element
lateral tilt stabilizer
Opis:
The work analyzes the possibility of using a truck chassis in terms of installing a specific device. As part ofwork was selected the vehicle, identified the necessary geometric parameters and the mass allowing of modernization, with particular emphasis on the required structural changes in the front and rear suspension. To this were used, the developed two phase methodology of calculation of the metal elastic elements (springs) and mechanical lateral tilt stabilizers. Results of numerical calculations are presented in the form of recommendations to redesign of the front and rear suspension. However, in the front suspension should be made a new spring and a mechanical lateral tilt stabilizer, while rear spring suspension meets the requirements in terms of elastic characteristics (adequate the coefficient of rigidity) is requiredonly adjustment of the static deflection of the suspension for example by adjusting the radii of leaf of the spring. Because of the design solution of the driving rear axle (so called driving axle trolley) was not proposed mechanical lateral tilt stabilizer. Paper present diagram of the forces acting on a vehicle with special equipment, results of the calculation loads acting on the suspension components fitted to a lorry with a special device, results of the calculation loads acting on the base vehicle suspension components, the basic parameters of a lorry with special hull and performance graph of the front suspension leaf spring resilience.
Źródło:
Journal of KONES; 2009, 16, 3; 47-54
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Traction properties of the tracked combat vehicle at lowered power of the driving engine
Autorzy:
Borkowski, W.
Rybak, P.
Michałowski, B.
Wysocki, J.
Hryciów, Z.
Powiązania:
https://bibliotekanauki.pl/articles/246171.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combat vehicle
tank
renewable fuel
drive characteristic
mobility
Opis:
Contemporary and future battlefield may be characterized by a great dynamism of action in both defensive and offensive operations. It is possible, that armoured and mechanized troops, acting at first attack, will suffer from shortages of supplies of materials and other equipment, especially propellants. It concerns particularly a fuel to engines of driving vehicles. Therefore in many cases for engine powering (as multi-propellant engines or adapted to work on substitute fuels) may be used substitute fuel. The fuel parameters sometimes may be much different from parameters of diesel. So it is substantially important to estimate their dynamics during the planning stage of combat missions. Paper includes attempt to estimate dynamic features of the combat vehicles using substitute propellants. Applying substitute propellants leads to reducing the power of the engine up to 10 % comparing to diesel. It has essential impact on lowering the dynamic ratio at similar level. That leads to lower maximum drive speed at given resistance ofmotion and reducing the ability to climb slopes. There also appears deterioration of spurt, extending the time of reaching speeds at about 17%. Paper shows results of traction calculations of combat vehicles and the influence of powering them with renewable fuel on their effectiveness.
Źródło:
Journal of KONES; 2009, 16, 1; 59-68
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 64

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