H. Niemi

Publication List Details

Period

2002 - 2009

Number

32

Co-Authors

Development of relativistic shock waves in viscous gluon matter (2009)

Bouras, I., Molnar, E., Niemi, H., Xu, Z., El, A., Fochler, O., ...

To investigate the formation and the propagation of relativistic shock waves in viscous gluon matter we solve the relativistic Riemann problem using a microscopic parton cascade. We demonstrate the...

Numerical tests of causal relativistic dissipative fluid dynamics (2009)

Molnár, E., Niemi, H., Rischke, D. H.

We present numerical methods to solve the Israel-Stewart (IS) equations of causal relativistic dissipative fluid dynamics with bulk and shear viscosities. We then test these methods studying the...

Relativistic shock waves in viscous gluon matter (2009)

Bouras, I., Molnar, E., Niemi, H., Xu, Z., El, A., Fochler, O., ...

We solve the relativistic Riemann problem in viscous gluon matter employing a microscopic parton cascade. We demonstrate the transition from ideal to viscous shock waves by varying the shear...

Elliptic flow in nuclear collisions at the Large Hadron Collider (2008)

Niemi, H., Eskola, K. J., Ruuskanen, P. V.

We use perfect-fluid hydrodynamical model to predict the elliptic flow coefficients in Pb + Pb collisions at the Large Hadron Collider (LHC). The initial state for the hydrodynamical calculation for...

MODELING STUDENTS ’ MOTIVATIONAL PROFILE FOR LEARNING IN VOCATIONAL HIGHER EDUCATION (2008)

Vocational Higher, Education In, H. Niemi, P. Ruohotie (eds, Theoretical Underst, Ings For, ...

The Abilities for Professional Learning (APL) questionnaire (Ruohotie, 2000b) was designed to measure 15 factors of motivation and learning

Heavy-ion collisions at the LHC-Last call for predictions (2008)

Armesto, N., Borghini, N., Jeon, S., Wiedemann, U. A., Abreu, S., Akkelin, S. V., ...

This writeup is a compilation of the predictions for the forthcoming Heavy Ion Program at the Large Hadron Collider, as presented at the CERN Theory Institute 'Heavy Ion Collisions at the LHC - Last...

Heavy Ion Collisions at the LHC - Last Call for Predictions (2007)

Abreu, S, Borghini, N, Akkelin, V, Alam, J, Albacete, J L, Andronic, A, ...

This writeup is a compilation of the predictions for the forthcoming Heavy Ion Program at the Large Hadron Collider, as presented at the CERN Theory Institute 'Heavy Ion Collisions at the LHC - Last...

Heavy Ion Collisions at the LHC - Last Call for Predictions (2007)

Abreu, S., Akkelin, S. V., Alam, J., Albacete, J. L., Andronic, A., Antonov, D., ...

This writeup is a compilation of the predictions for the forthcoming Heavy Ion Program at the Large Hadron Collider, as presented at the CERN Theory Institute 'Heavy Ion Collisions at the LHC - Last...

Dynamical freeze-out condition in ultrarelativistic heavy ion collisions (2007)

Eskola, K. J., Niemi, H., Ruuskanen, P. V.

We determine the decoupling surfaces for the hydrodynamic description of heavy ion collisions at RHIC and LHC by comparing the local hydrodynamic expansion rate with the microscopic pion-pion...

International Commentaries. Improving educational research: TLRP's projects and themes (2007)

Baker, E, Baker, R, Garvey Berger, J, Darmon, A, Gogolin, I, Hogan, D, ...

Leading International educational researchers from Finland, Germany, Israel, New Zealand, Singapore, Switzerland and the USA comment on the contents of this special issue. These reviewers have...

Elliptic flow from pQCD + saturation + hydro model (2007)

Eskola, K. J., Niemi, H., Ruuskanen, P. V.

We have previously predicted multiplicities and transverse momentum spectra of hadrons for the most central LHC Pb+Pb collisions at $\sqrt{s_{NN}}=5.5$ TeV using initial state for hydrodynamic...

Hadron multiplicities, pT-spectra and net-baryon number in central Pb+Pb collisions at the LHC (2007)

Eskola, K. J., Honkanen, H., Niemi, H., Ruuskanen, P. V., Rasanen, S. S.

We compute the initial energy density and net baryon number density in 5% most central Pb+Pb collisions at $\sqrt s=5.5$ TeV from pQCD + (final state) saturation, and describe the evolution of the...

Transverse Spectra of Hadrons in Central $AA$ Collisions at RHIC and LHC from pQCD+Saturation+Hydrodynamics and from pQCD+Energy Losses (2005)

Eskola, K. J., Honkanen, H., Niemi, H., Ruuskanen, P. V., Räsänen, S. S.

We study the transverse spectra of hadrons in nearly central $AA$ collisions at RHIC and LHC in a broad transverse momentum range Low-$p_T$ spectra are calculated by using boost-invariant...

RHIC-tested predictions for low-$p_T$ and high-$p_T$ hadron spectra in nearly central Pb+Pb collisions at the LHC (2005)

Eskola, K J, Honkanen, H, Niemi, H, Ruuskanen, P V, Räasänen, S S

We study the hadron spectra in nearly central $A$+$A$ collisions at RHIC and LHC in a broad transverse momentum range. We cover the low-$p_T$ spectra using longitudinally boost-invariant...

RHIC-tested predictions for low-$p_T$ and high-$p_T$ hadron spectra in nearly central Pb+Pb collisions at the LHC (2005)

Eskola, K. J., Honkanen, H., Niemi, H., Ruuskanen, P. V., Rasanen, S. S.

We study the hadron spectra in nearly central $A$+$A$ collisions at RHIC and LHC in a broad transverse momentum range. We cover the low-$p_T$ spectra using longitudinally boost-invariant...

Photon Physics in Heavy Ion Collisions at the LHC (2005)

Arleo, F., Aurenche, P., Bopp, F., Dadic, I., David, G., Delagrange, H., ...

Various pion and photon production mechanisms in high-energy nuclear collisions at RHIC and LHC are discussed. Comparison with RHIC data is done whenever possible. The prospect of using...

Photon Physics in Heavy Ion Collisions at the LHC (2005)

Aurenche, Patrick, Kodolova, Olga, Lévai, Peter, Lokhtin, Igor P, Peitzmann, Thomas, Redlich, Krzysztof, ...

Various photon production mechanisms in high-energy nuclear collisions at the LHC are discussed and compared. The prospect of using electromagnetic probes to characterize quark-gluon plasma formation...

Photon Physics in Heavy Ion Collisions at the LHC (2005)

Aurenche, Patrick, Kodolova, Olga, Lévai, Peter, Lokhtin, Igor P, Peitzmann, Thomas, Redlich, Krzysztof, ...

Various photon production mechanisms in high-energy nuclear collisions at the LHC are discussed and compared. The prospect of using electromagnetic probes to characterize quark-gluon plasma formation...

Photon production from non-equilibrium QGP in heavy ion collisions (2004)

Gelis, F., Niemi, H., Ruuskanen, P. V., Rasanen, S. S.

We present a calculation of thermal photon production i.e. photons from secondary interactions among particles produced in heavy ion collisions at collider energies. This is done within the framework...

Photon Physics in Heavy Ion Collisions at the LHC (2004)

Arleo, F., Aurenche, P., Bopp, F., Dadic, I., David, G., Delagrange, H., ...

Various pion and photon production mechanisms in high-energy nuclear collisions at RHIC and LHC are discussed. Comparison with RHIC data is done whenever possible. The prospect of using...

Photon Physics in Heavy Ion Collisions at the LHC (2004)

Arleo, F., Aurenche, P., Bopp, F., Dadic, I., David, G., Delagrange, H., ...

Various pion and photon production mechanisms in high-energy nuclear collisions at RHIC and LHC are discussed. Comparison with RHIC data is done whenever possible. The prospect of using...

Photon Physics in Heavy Ion Collisions at the LHC (2003)

Arleo, F., Aurenche, P., Bopp, F., Dadic, I., David, G., Delagrange, H., ...

Various pion and photon production mechanisms in high-energy nuclear collisions at RHIC and LHC are discussed. Comparison with RHIC data is done whenever possible. The prospect of using...

Hard probes in heavy ion collisions at the LHC: heavy flavour physics (2003)

Bedjidian, Marc, Blaschke, D, Bodwin, G T, Carrer, N, Cole, B, Crochet, Philippe, ...

We present the results from the heavy quarks and quarkonia working group. This report gives benchmark heavy quark and quarkonium cross sections for $pp$ and $pA$ collisions at the LHC against which...

Hard probes in heavy ion collisions at the LHC: heavy flavour physics (2003)

Bedjidian, M., Blaschke, D., Bodwin, G. T., Carrer, N., Cole, B., Crochet, P., ...

We present the results from the heavy quarks and quarkonia working group. This report gives benchmark heavy quark and quarkonium cross sections for $pp$ and $pA$ collisions at the LHC against which...

Transverse spectra of hadrons at RHIC (2002)

Eskola, K. J., Niemi, H., Ruuskanen, P. V., Rasanen, S. S.

We present results on spectra of pions, kaons and (anti)protons from a study of heavy ion collisions using the perturbative QCD + saturation model to calculate the production of initial (transverse)...

Dependence of hadron spectra on decoupling temperature and resonance contributions (2002)

Eskola, K. J., Niemi, H., Ruuskanen, P. V., Räsänen, S. S.

Using equilibrium hydrodynamics with initial conditions for the energy and net baryon number densities from the perturbative QCD + saturation model, a good simultaneous description of the measured...

On the Angle for Stationary Random Fields. (2002)

Miamee,A. G., Niemi,H.

The angle between past and future for stationary random fields on the lattice points of the plane is defined and it is shown that in contrast with other problems related to the past of random fields...

On the prediction theory of two-parameter stationary random fields

Kallianpur, G., Miamee, A. G., Niemi, H.

The paper develops the spectral theory corresponding to the various time domain Wold decompositions of a discrete two-parameter stationary second-order random field (ssorf). Appropriate Szegö-type...