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Wyświetlanie 1-15 z 69
Tytuł:
Sum rule of the correlation function
Autorzy:
Mrówczyński, S.
Maj, R.
Powiązania:
https://bibliotekanauki.pl/articles/147374.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
particle correlations
nuclear collisions
Opis:
We discuss a sum rule satisfied by the correlation function of two particles with small relative momenta. We first derive the sum rule, which results from the completeness condition of the quantum states of the two particles, and then we discuss it for the case of strongly interacting pair of neutron and proton and for the Coulomb system of two charged particles.
Źródło:
Nukleonika; 2004, 49,suppl.2; 27-31
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A survey of multiplicity fluctuations in PHENIX
Autorzy:
Mitchell, J.
Powiązania:
https://bibliotekanauki.pl/articles/148455.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
fluctuations
multiplicity
relativistic heavy-ion collisions
Opis:
The PHENIX Experiment at the Relativistic Heavy Ion Collider has made measurements of event-by-event fluctuations in the charged particle multiplicity as a function of collision energy, centrality, collision species, and transverse momentum in heavy-ion collisions. The results of these measurements will be reviewed and discussed.
Źródło:
Nukleonika; 2006, 51,suppl.3; 89-92
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of hard processes on momentum correlations in pp and p(anti)p collisions
Autorzy:
Paić, G.
Skowroński, P.
Powiązania:
https://bibliotekanauki.pl/articles/148457.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
HBT
correlations
proton-proton collisions
hadronization
Opis:
The HBT radii extracted in pp and pp collisions at SPS and Tevatron show a clear correlation with the charged particle rapidity density. We propose to explain the correlation using a simple model where the distance from the initial hard parton-parton scattering to the hadronization point depends on the energy of the partons emitted. Since the particle multiplicity is correlated with the mean energy of the partons produced we can explain the experimental observations without invoking scenarios that assume a thermal fireball. The model has been applied with success to the existing experimental data both in the magnitude and the intensity of the correlation. The model has also been extended to pp collisions at the LHC energy of 14 TeV. The possibilities of a better insight into the string spatial development using 3D HBT analysis are discussed.
Źródło:
Nukleonika; 2006, 51,suppl.3; 83-87
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examination of heavy-ion collisions using EPOS model in the frame of BES program
Autorzy:
Stefaniak, M.
Powiązania:
https://bibliotekanauki.pl/articles/227252.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
BES program
heavy-ion collisions
EPOS
Opis:
EPOS is a generator which allows one to simulate various types of collisions of divers systems with different initial parameters. It considers the parton-based Gribov-Regge theory. So far the EPOS model has been used to describe higher collision energies obtained with RHIC or LHC data. On the other hand, there is another program under investigation: Beam Energy Scan conducted at Brookhaven National Laboratory. The beams of gold ions are collided at energies such as √sNN - 7:7; 11:5; 19:6; 27; 39, and 62.4 GeV in order to collect and analyze data needed in examination of QGP Phase Diagram. The EPOS model could become a useful tool in such studies. Simulated with EPOS data will be verified using elliptic flow analyses and two-particles femtoscopic correlations, which allow one to measure the size of sources determined by newly created particle.
Źródło:
International Journal of Electronics and Telecommunications; 2018, 64, 1; 65-70
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Демократизация языков: факторы, коллизии и альтернативы
Democratisation of languages: factors, collisions and alternatives
Autorzy:
Мечковская, Нина
Powiązania:
https://bibliotekanauki.pl/articles/444933.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
democratisation of languages
factors
collisions
alternatives
Opis:
Democratisation of languages happens commonly and spontaneously. The main process in the development of language democratisation is the transition from cultural bilinguism, so typical of the Middle Ages, to national monolinguism. That kind of language conversion was a linguistic component of the powerful historical trend towards the intensification of being social and towards homogeneousation of human communities. Language policy has trivial results in lexicographic and grammatical codification and a few serious results in the degree of freedom in mass media and public communication as also in the linguistic ideology of community (in deontological and axiological modalities towards language).
Źródło:
Acta Neophilologica; 2006, VIII; 129-138
1509-1619
Pojawia się w:
Acta Neophilologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of multi-section concept for an active air headrest
Analiza koncepcji wielosekcyjnego powietrznego zagłówka aktywnego
Autorzy:
Jaśkiewicz, M.
Stańczyk, T. L.
Powiązania:
https://bibliotekanauki.pl/articles/327506.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
bezpieczeństwo bierne
zderzenie
passive safety
collisions
Opis:
In the following paper there was built a mathematical model of 13 degrees of freedom which shows a man-driver model in a sitting position with a fastened seatbelt. Next a multi-section concept of a headrest was shown, and in fact an ideal protection of the back of head and spine. There was conducted a simulation of protective activity of a headrest with the use of a man-model. Obtained results have been used to conduct the analysis which show the influence of headrest activation time and the level of its filling-in on its protective features.
W pracy zbudowano model matematyczny o 13 stopniach swobody przedstawiający człowieka-kierowcę w pozycji siedzącej, zapiętego pasami. Następnie przedstawiono koncepcję wielosekcyjnego zagłówka a w zasadzie idealnej tylnej ochrony głowy i kręgosłupa. Wykonano symulację ochronnego działania tego zagłówka z wykorzystaniem opracowanego modelu człowieka. Uzyskane wyniki wykorzystano do przeprowadzenia analiz pokazujących wpływ czasu uruchomienia zagłówka oraz stopnia jego napełnienia na właściwości ochronne zagłówka.
Źródło:
Diagnostyka; 2010, 3(55); 45-49
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Analysis of the Collisions of Rail Vehicles with Animals with Regard to the Railway Traffic Safety
Autorzy:
Stolarski, Marek
Żyłkowska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/504038.pdf
Data publikacji:
2014
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
animal-train collisions
safety
railway transport
Opis:
Although animal-train collisions are common they are poorly recognised. They pose a threat to the passengers’ safety and also cause countable loss for railway operators in the form of rolling stock repairs and delays. The problem is much more significant in passenger transport due to the higher speed compared with cargo trains. The scale of damages caused by collisions also depends on the size of the animal and the type of locomotive. The analysis of collision sites and careful collection of data by all the railway operators would have a significant influence on railway transport safety and costs.
Źródło:
Logistics and Transport; 2014, 22, 2; 49-56
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single particle spectra from information theory point of view
Autorzy:
Navarra, F.
Utyuzh, O.
Wilk, G.
Włodarczyk, Z.
Powiązania:
https://bibliotekanauki.pl/articles/147370.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
information theory
high energy collisions
MaxEnt
Opis:
Abstract It is demonstrated how to obtain the least biased description of a single particle spectra measured in all multiparticle production processes by using an information theory approach (known also as MaxEnt approach). The case of e+e annihilation in hadrons process is discussed in more detail as an example. Comparison between the MaxEnt approach and a simple dynamical model based on the cascade process is presented as well.
Źródło:
Nukleonika; 2004, 49,suppl.2; 19-21l
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of the safety belt used for chairs used in buses and minibuses with small-speed collisions
Autorzy:
Jaśkiewicz, M.
Więckowski, D.
Powiązania:
https://bibliotekanauki.pl/articles/906239.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
safety belts
collisions
biomechanics of injuries
Opis:
The article presents the analysis of the impact of the safety belt used onto a man sitting in a chair. The tests were conducted for small-speed collisions for three centile groups: 5, 50 and 95-centile group respectively. Each of those groups comprised men between 20 to 35 years of age. The tests were conducted on the inclined plane type device simulating the collision of a vehicle with the speed of approx. 12 km/h. Three types of safety belts were used for the tests: two-point, three-point and four-point belts. The results of analyses are presented in this article.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 39 (111); 74-81
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increase in the moose (Alces alces L. 1758) population size in Poland: causes and consequences
Wzrost liczebności populacji łosia (Alces alces L. 1758) w Polsce: przyczyny i konsekwencje
Autorzy:
Dziki-Michalska, K.
Tajchman, K.
Budzyńska, M.
Powiązania:
https://bibliotekanauki.pl/articles/2082421.pdf
Data publikacji:
2019
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
Alces alces
population size
behaviour
damage
collisions
Opis:
Increase in the moose (Alces alces L. 1758) population size in Poland: causes and consequences. The aim of the study was to characterise the determinants of the moose (Alces alces) population size in Poland, taking into account the methods for assessment thereof as well as animals’ habitat preference and behaviour, and to identify problems associated with the increased population size in this species. The study presents threats posed by the overpopulation in these animals not only to their living habitat but also to the species itself. The process of habituation, which results in changes in the behaviour of freeliving animals, may play an important role. It is ad visable that steps should be taken to maintain healthy populations of moose on the one hand and mitigate the adverse effects of overpopulation in this species on the other hand. There is a need for a reliable method for making inventories of the species and resumption of the regulation of moose density by culling.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2019, 58[3]; 203-214
1898-8830
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of road accidents in 2002–2019 on the example of Poland
Autorzy:
Frej, Damian
Ludwinek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/263235.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
road accidents
collisions
road safety
passenger vehicle
Opis:
The article presents a general description of the safety problem in Polish road transport in the years 2002-2019. The number of road accidents was analyzed in detail, taking into account the division into side, front and rear collisions and the dynamics of their changes. The article contains information on the dynamics of changes registered in passenger vehicles and trucks in Poland in the years 2000-2018. Moreover, the number of fatalities in road accidents in the years 2002-2019 was presented, taking into account the type of collision. The forecasts of changes in the number of road accidents and rear collisions presented in the article show the downward trend for the years 2020-2030 of frontal collisions. An inconspicuous rear collision by not braking a speeding vehicle carries a high risk of damage to the upper cervical spine. As a result of such a collision, even at a low speed of 20 km/h, they can cause irreversible health effects, which lead to permanent disability.
Źródło:
Archiwum Motoryzacji; 2020, 89, 3; 5-18
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Azimuthally-sensitive interferometry and the source lifetime at RHIC
Autorzy:
Lisa, M.
Powiązania:
https://bibliotekanauki.pl/articles/147422.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
interferometry
HBT
heavy-ion collisions
freeze-out
Opis:
Pion interferometry (HBT) measurements relative to the reaction plane provide an estimate of the transverse source anisotropy at freeze-out, which probes the system dynamics and evolution duration. Measurements by the STAR Collaboration indicate that the source is extended increasingly out-of-plane with increasing impact parameter, suggesting a short evolution duration roughly consistent with estimates based on azimuthally-integrated HBT measurements.
Źródło:
Nukleonika; 2004, 49,suppl.2; 71-76
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rapidity distributions of strange particles in Pb-Pb at 158 AGeV
Autorzy:
Bruno, G.
Powiązania:
https://bibliotekanauki.pl/articles/148576.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
relativistic heavy-ion collisions
strangeness
rapidity distributions
Opis:
The production at central rapidity of KS0, Lambda, Teta and Omega particles in Pb-Pb collisions at 158 AGeV has been measured by the NA57 experiment over a centrality range corresponding to the most central 53% of the inelastic Pb-Pb cross section. We present the rapidity distribution of each particle in the central rapidity unit. The distributions are analysed based on hydrodynamical models of the collisions.
Źródło:
Nukleonika; 2006, 51,suppl.3; 11-15
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of the Baszkówka and Mt. Tazerzait chondrites: genetic conclusions based on astrophysical data and the mineralogical and petrological data
Autorzy:
Pilski, A. S.
Przylibski, T. A.
Zagożdżon, P. P.
Powiązania:
https://bibliotekanauki.pl/articles/2059300.pdf
Data publikacji:
2001
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
meteorites
chondrites
solar system
asteroids
asteroid-collisions
Opis:
The L5 chondrites Baszkówka and Mt. Tazerzait are characterised. Their astronomical, mineralogical and petrological characteristics confirm that these meteorites are similar. They could be derived from the same parent body, though from the different depths below its surface. A third meteorite - the Tjerebon - might have arisen from the same swarm of meteoroids. The parent body to these meteorites in the asteroid belt can not be established at present. The porosity, of these chondrites suggests that they formed close to the surface of their parent asteroid. The process of formation of the parent rock of the Baszkówka chondrite is similar in some respects to sedimentation of a weakly compacted terrestrial sandstone. Thus, a two-stage geological history may be envisaged: firstly formation of the component minerals and mineral aggregates of this meteorite. Then, later in a different environment, the accretion of fragments of this parent material, together with a small amount of matrix, into a strongly porous sedimentary rock.
Źródło:
Geological Quarterly; 2001, 45, 3; 331-342
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of influence of particle identification in ALICE detectors and resonance decays on correlation functions
Autorzy:
Malinina, L.
Batyunya, B.
Zaporozhets, S.
Powiązania:
https://bibliotekanauki.pl/articles/147446.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
heavy-ion collisions
HBT
correlation function
particle identification
Opis:
The information about dynamics of the collective expansion of the source created in heavy ion collisions can be extracted by using intensity interferometry in different regions of rapidity and transverse momentum (pt). The study of different factors affecting the pt-dependence of the radii and the strength of the correlation is necessary and that is why we have studied the influence of the particle identification efficiency and the presence of the pions from resonance decays on (pi+,pi+) correlation function measured by ALICE experiment.
Źródło:
Nukleonika; 2004, 49,suppl.2; 99-102
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 69

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