Low-mass vector-meson production at forward rapidity in p + p collisions at √s = 200 GeV

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured low-mass vector-meson, ω, ρ, and ϕ, production through the dimuon decay channel at forward rapidity (1.2<|y|<2.2) in p+p collisions at √s=200  GeV. The differential cross sections for these mesons are measured as a function of both pT and rapidity. We also report the integrated differential cross sections over 1<pT<7  GeV/c and 1.2<|y|<2.2: dσ/dy(ω+ρ→μμ)=80±6(stat)±12(syst)  nb and dσ/dy(ϕ→μμ)=27±3(stat)±4(syst)  nb. These results are compared with midrapidity measurements and calculations

Cross section and transverse single-spin asymmetry of η mesons in p↑+p collisions at s√=200 GeV at forward rapidity

We present a measurement of the cross section and transverse single-spin asymmetry (AN) for η mesons at large pseudorapidity from √s=200  GeV p↑+p collisions. The measured cross section for 0.5<pT<5.0  GeV/c and 3.0<|η|<3.8 is well described by a next-to-leading-order perturbative-quantum-chromodynamics calculation. The asymmetries AN have been measured as a function of Feynman-x (xF) from 0.2<|xF|<0.7, as well as transverse momentum (pT) from 1.0<pT<4.5  GeV/c. The asymmetry averaged over positive xF is ⟨AN⟩=0.061±0.014. The results are consistent with prior transverse single-spin measurements of forward η and π0 mesons at various energies in overlapping xF ranges. Comparison of different particle species can help to determine the origin of the large observed asymmetries in p↑+p collisions

Medium Modification of Jet Fragmentation in Au + Au Collisions at √sNN=200 GeV Measured in Direct Photon-Hadron Correlations

The jet fragmentation function is measured with direct photon-hadron correlations in p+p and Au+Au collisions at √sNN=200  GeV. The pT of the photon is an excellent approximation to the initial pT of the jet and the ratio zT=phT/pγT is used as a proxy for the jet fragmentation function. A statistical subtraction is used to extract the direct photon-hadron yields in Au+Au collisions while a photon isolation cut is applied in p+p. IAA, the ratio of hadron yield opposite the photon in Au+Au to that in p+p, indicates modification of the jet fragmentation function. Suppression, most likely due to energy loss in the medium, is seen at high zT. The associated hadron yield at low zT is enhanced at large angles. Such a trend is expected from redistribution of the lost energy into increased production of low-momentum particles

Nuclear matter effects on J/ψ production in asymmetric Cu + Au collisions at √sNN=200 GeV

We report on J/ψ production from asymmetric Cu + Au heavy-ion collisions at √sNN=200 GeV at the Relativistic Heavy Ion Collider at both forward (Cu-going direction) and backward (Au-going direction) rapidities. The nuclear modification of J/ψ yields in Cu + Au collisions in the Au-going direction is found to be comparable to that in Au + Au collisions when plotted as a function of the number of participating nucleons. In the Cu-going direction, J/ψ production shows a stronger suppression. This difference is comparable in magnitude and has the same sign as the difference expected from shadowing effects due to stronger low-x gluon suppression in the larger Au nucleus

Razvoj funkcionalnih sposobnosti prema senzitivnim obilježjima mladih nogometaša

Nogometna igra zahtijeva visoku razinu motoričkih i funkcionalnih kapaciteta za obavljanje različitih poslova tijekom nogometne igre. Stavljaju se veliki zahtijeva pred nogometaša u području aerobnih i anaerobnih kapaciteta. Vrlo je bitno da razvoj funkcionalnih kapaciteta ide sustavno i s obzirom na karakteristike i obilježja mladih nogometaša. Glavni cilj ovog rada jest prikazati zakonitosti i principe razvoja funkcionalnih kapaciteta kod mladih nogometaša s obzirom na njihove specifičnosti, odnosno senzitivna obilježja rasta i razvoja. U radu će isto tako biti prikazani primjeri sadržaja za razvojfunkcionalnih kapaciteta s obzirom na dob i potreba mladih nogometaša.Football requires a high level of motoric and functional abilities for the performance of various tasks during football games. Great challenges are put up before a footballer in the area of aerobic and anaerobic capacity. It's really important that the development of functional capacities progresses systematically while taking into consideration characteristics and traits of young football players. The primary goal of this thesis is to show regularities and principles of the development of functional capacities with young footballers while considering their individual uniqueness, i.e. precise criteria of growth and development. Additionally this thesis will show examples of contents for the development of functional capacities considering the age and needs of young footballers

Historijski zbornik, god. 67, br. 1 (319 str.) – br. 2 (138 str.), Zagreb 2014.

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Kulturna industrija YouTubea

Rad analizira YouTubeov model poslovanja, sadržaj i kulturu nastalu iz njega kroz model opisan u eseju Kulturna industrija: Prosvjetiteljstvo kao masovna obmana (1947.) Theodorea W. Adorna, izlaže pregled procesa stvaranja videa i problema koji pritom nastaju te kritizira formulaičnost tog sadržaja, nastalu kulturnu klimu i specifične probleme vezane uz društvene mreže i medij videa koji pritom nastaju. Zaključuje da iako Adornov model ne može u potpunosti opisati sve aspekte multimedije u internetskom dobu, zato što se isprva odnosio na film i radio, devijacije su prividne i ne mijenjaju srž teze da komercijalizacija medija direktno potiče konformizam i ima za cilj pripitomiti gledaoca. Ne osuđuje YouTube ni njegove gledatelje, već kritizira komercijalistički sustav koji je prouzročio današnje stanje te platforme

Razvoj sustava silicijskih detektora za opažanje protona i mjerenje trostrukih koincidencija u elektronskim raspršenjima na jezgrama 12C

A silicon detector system has been developed for proton detection in electron scattering reactions at MAMI. The use of digital algorithms for detector signal processing enabled maintaining the acceptable energy resolution at high counting rates. Triple-coincidence reactions 12C(e, e´pπ-)11C and 12C(e, e´pp)10Be were studied, where in the latter, the differential cross section for the transition to berilium ground-state has been extracted. By comparison with theoretical models, this result could contribute to understanding of nucleon-nucleon correlations and thus the properties of atomic nuclei.Razvijen je sustav silicijskih detektora za opažanje protona u reakcijama elektronskog raspršenja na ubrzivaču MAMI. Za obradu detektorskih signala upotrijebljeni su digitalni algoritmi, čime je omogućeno zadržavanje prihvatljive energijske razlučivosti uz visoki tok čestica kroz detektorski sustav. Proučavane su trostruko-koincidentne reakcije 12C(e, e´ pπ-)11C, te 12C(e, e´ pp)10Be u kojoj je određen diferencijalni udarni presjek za prijelaz u osnovno stanje berilija. Taj bi rezultat, usporedbom s teorijskim modelima, mogao doprinjeti razumijevanju nukleon-nukleon korelacija, a time i svojstava atomske jezgre

Razvoj funkcionalnih sposobnosti prema senzitivnim obilježjima mladih nogometaša

Nogometna igra zahtijeva visoku razinu motoričkih i funkcionalnih kapaciteta za obavljanje različitih poslova tijekom nogometne igre. Stavljaju se veliki zahtijeva pred nogometaša u području aerobnih i anaerobnih kapaciteta. Vrlo je bitno da razvoj funkcionalnih kapaciteta ide sustavno i s obzirom na karakteristike i obilježja mladih nogometaša. Glavni cilj ovog rada jest prikazati zakonitosti i principe razvoja funkcionalnih kapaciteta kod mladih nogometaša s obzirom na njihove specifičnosti, odnosno senzitivna obilježja rasta i razvoja. U radu će isto tako biti prikazani primjeri sadržaja za razvojfunkcionalnih kapaciteta s obzirom na dob i potreba mladih nogometaša.Football requires a high level of motoric and functional abilities for the performance of various tasks during football games. Great challenges are put up before a footballer in the area of aerobic and anaerobic capacity. It's really important that the development of functional capacities progresses systematically while taking into consideration characteristics and traits of young football players. The primary goal of this thesis is to show regularities and principles of the development of functional capacities with young footballers while considering their individual uniqueness, i.e. precise criteria of growth and development. Additionally this thesis will show examples of contents for the development of functional capacities considering the age and needs of young footballers

Historijski zbornik, god. 68, br. 1 (273 str.) – br. 2 (262 str.), Zagreb 2015.

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