Tests of Universality of Baryon Form Factors in Holographic QCD (2009)
Cherman, A., Cohen, T. D., Nielsen, M.
We describe a new exact relation for large $N_c$ QCD for the long-distance behavior of baryon form factors in the chiral limit, satisfied by all 4D semi-classical chiral soliton models. We use this...
QCD Sum Rules for the X(3872) as a mixed molecule-charmoniun state (2009)
Matheus, R. D., Navarra, F. S., Nielsen, M., Zanetti, C. M.
We use QCD sum rules to test the nature of the meson X(3872), assumed to be a mixture between charmonium and exotic molecular [c\bar{q}][q\bar{c}] states with J^{PC}=1^{++}. We find that there is...
SU(3) mass-splittings of the heavy-baryons in QCD (2009)
Albuquerque, R. M., Narison, S., Nielsen, M.
We directly extract (for the first time) the heavy-baryons (octet and decuplet) mass-splittings due to SU(3) breaking using double ratios of QCD spectral sum rules(QSSR) in full QCD, which are less...
D. Windover, E. Barnat, J. Y. Kim, M. Nielsen, A. Kumar, ...
X-Ray Reflectivity provides a non-destructive technique for measuring density in thin films. A conventional laboratory, Bragg-Brentano-geometry diffractometer was employed to show the generalized...
The meson $Z^+(4430)$ as a tetraquark state (2008)
Bracco, M. E., Lee, S. H., Nielsen, M., Da Silva, R. Rodrigues
We test the validity of the QCD sum rules applied to the meson $Z^+(4430)$, by considering a diquark-antidiquark type of current with $J^{P}=0^{-}$ and with $J^{P}=1^{-}$. We find that, with the...
QCD sum rules study of the $J^{PC}=1^{--}$ charmonium $Y$ mesons (2008)
Albuquerque, R. M., Nielsen, M.
We use QCD sum rules to test the nature of the recently observed mesons Y(4260), Y(4350) and Y(4660), assumed to be exotic four-quark $(c\bar{c}q\bar{q})$ or $(c\bar{c}s\bar{s})$ states with...
DOI 10.1007/s00251-004-0647-4 ORIGINAL PAPER (2008)
Ole Lund, Morten Nielsen, Can Kesmir, Anders Gorm, Petersen Claus Lundegaard, Peder Worning, ...
Definition of supertypes for HLA molecules using clustering of specificity matrices
Expansion for Relativistic Nuclear Models (2007)
Krein Marques, D. P. Menezes, M. Nielsen
The optimized ffi-expansion is a nonperturbative approach for field theoretic models which combines the techniques of perturbation theory and the variational principle. This technique is discussed in...
Criteria for fitting MEG dipoles with fMRI position constraints (2007)
N. Fujimaki, T. Hayakawa, M. Nielsen, S. Miyauchi
Since MEG and EEG inverse problems are "illposed" (i.e., solutions cannot be uniquely determined), additional information such as fMRI and PET activation data can be used to impose
Brownian Warps: A least committed prior for non-rigid registration (2007)
M. Nielsen, P. Johansen, A. D. Jackson, B. Lautrup
Non-rigid registration requires a smoothness or regularization term for making the warp field regular. Standard models in use here include b-splines and thin plate splines. In this paper, we suggest...
\rho D^*D^* vertex from QCD sum rules (2007)
Bracco, M. E., Chiapparini, M., Navarra, F. S., Nielsen, M.
We calculate the form factors and the coupling constant in the $\rho D^* D^*$ vertex in the framework of QCD sum rules. We evaluate the three point correlation functions of the vertex considering...
Final state hadronic interactions and non-resonant $B^\pm\to K^\pm\pi^+\pi^-$ decays (2007)
Bediaga, I., Boito, D. R., Guerrer, G., Navarra, F. S., Nielsen, M.
We evaluate the non-resonant decay amplitude of the process $B^\pm\to K^\pm\pi^+ \pi^-$ using an approach based on final state hadronic interactions described in terms of meson exchanges. We conclude...
$D_{sJ}$(2317) meson production at RHIC (2007)
Chen, L. W., Ko, C. M., Liu, W., Nielsen, M.
Production of $D_{sJ}$(2317) mesons in relativistic heavy ion collisions at RHIC is studied. Using the quark coalescence model, we first determine the initial number of $D_{sJ}$(2317) mesons produced...
Do the QCD sum rules support four-quark states? (2007)
Matheus, R. D., Navarra, F. S., Nielsen, M., Da Silva, R. Rodrigues
We test the validity of the QCD sum rules applied to the light scalar mesons, the charmed mesons $D_{s0}(2317)$ and $D_{s1} (2460)$, and the X(3872) axial meson, considered as tetraquark states. We...
Radiation dose measurements around the CERN high-energy accelerators : PSB, PS and SPS (2007)
Bossard, P, Chanel, M, Coninckx, F, Izycka, A, Nielsen, M, Schönbacher, Helmut, ...
Coupling constants of $D^*D_sK$ and $D_s^*DK$ processes (2006)
Bracco, M. E., Lozea, A., Cerqueira Jr., A., Chiapparini, M., Nielsen, M.
We calculate the coupling constants of $D^*D_sK$ and $D_s^*DK$ vertices using the QCD sum rules technique. We compare results obtained in the limit of SU(4) symmetry and found that the symmetry is...
Investigating the tetraquark structure of the new mesons (2006)
Nielsen, M., Navarra, F. S., Bracco, M. E.
Using the QCD sum rule approach we investigate the possible four-quark structure of the recently observed mesons $D_{sJ}^{+}(2317)$, firstly observed by BaBaR, X(3872), firstly observed by BELLE and...
Can the X(3872) be a 1^{++} four-quark state? (2006)
Matheus, R. D., Narison, S., Nielsen, M., Richard, J. M.
We use QCD spectral sum rules to test the nature of the meson X(3872), assumed to be an exotic four-quark (c\bar{c}q\bar{q}) state with J^{PC}=1^{++}. For definiteness, we work with the current...
New spectroscopy from the B factories, the advent of CLEO-c and the BES upgrade renewed the interest in charmonia. Among the new measurements, the state X(3872) has received special attention due to...
$D^* D_s K$ and $D_s ^* D K$ vertices in a QCD Sum Rule approach (2006)
Bracco, M. E., Cerqueira Jr., A., Chiapparini, M., Lozea, A., Nielsen, M.
We calculate the strong form factors and coupling constants of $ D^* D_s K$ and $D_s^* D K$ vertices using the QCD sum rules technique. In each case we have considered two different cases for the...
Copying actions and copying outcomes: Social learning through the second year (2006)
The present work documents how the logic of a model's demonstration and the communicative cues that the model provides interact with age to influence how children engage in social learning. Children...
The development of self-recognition in mirrors and live videos (2006)
Suddendorf, T., Simcock, G., Nielsen, M., Collier-Baker, E.
By 24-months of age most children show mirror self-recognition. When surreptitiously marked on their forehead and then presented with a mirror, they explore their own head for the unexpected mark....
Disentangling two- and four-quark state pictures of the charmed scalar mesons (2005)
Bracco, M. E., Lozea, A., Matheus, R. D., Navarra, F. S., Nielsen, M.
We suggest that the recently observed charmed scalar mesons $D_0^{0}(2308)$ (BELLE) and $D_0^{0,+}(2405)$ (FOCUS) are considered as different resonances. Using the QCD sum rule approach we...
Transient quintessence from group manifold reductions or how all roads lead to Rome (2004)
Gran, U., Collinucci, A., Bergshoeff, E., Nielsen, M., Roest, D.
We investigate the accelerating phases of cosmologies supported by a metric, scalars and a single exponential scalar potential. The different solutions can be represented by trajectories on a sphere...
The Bianchi classification of maximal D = 8 gauged supergravities (2004)
Ortín, T., Nielsen, M., Linares, R., Gran, U., Bergshoeff, E., Roest, D.
We construct maximal D = 8 gauged supergravities by the reduction of D = 11 supergravity over three-dimensional group manifolds. Such manifolds have been classified by Bianchi. We divide the...
Risø–R–1437(EN) Wind Simulation for Extreme and Fatigue Loads (2004)
M. Nielsen, G. C. Larsen, J. Mann, S. Ott, K. S. Hansen, B. J. Pedersen
Abstract M˚alinger af atmosfærisk turbulens afviger fra en Gaussisk proces, specielt hvad ang˚ar hastighedsændringer over sm˚a tidsskridt, hvor halerne p˚a sandsynlighedsfordelingen snarere er...
The Bianchi Classification of Maximal D=8 Gauged Supergravities (2003)
Bergshoeff, E A, Gran, U G, Linares, R, Nielsen, M, Ortín, T, Roest, D
We perform the generalised dimensional reduction of D=11 supergravity over three-dimensional group manifolds as classified by Bianchi. Thus, we construct eleven different maximal D=8 gauged...
Using trust for secure collaboration in uncertain environments (2003)
Cahill, V., Gray, E., Seigneur, J.M., Jensen, C., Chen, Y., Shand, B., ...
The SECURE project is investigating the design of security mechanisms for pervasive computing based on the human notion of trust. Our work addresses how entities that encounter each other in...
Nielsen, M, Dissanayake, C, Kashima, Y
The aim in this study was to investigate the association between infants' developing interest in their self-image and the onset of mirror self-recognition (MSR). A longitudinal study was conducted...
Using trust for secure collaboration in uncertain environments (2003)
Cahill, V., Gray, E., Seigneur, J.M., Jensen, C., Chen, Y., Shand, B., ...
The SECURE project is investigating the design of security mechanisms for pervasive computing based on the human notion of trust. Our work addresses how entities that encounter each other in...
R. Gribonval, M. Nielsen, R. Gribonval, M. Nielsen
Highly sparse representations from dictionaries are unique and independent of the sparseness measure
Semileptonic D decay into scalar mesons: a QCD sum rule approach (2002)
Dosch, H. G., Ferreira, E. M., Navarra, F. S., Nielsen, M.
Semileptonic decays of D-mesons into scalar hadronic states are investigated. Two extreme cases are considered: a) the meson decays directly into an uncorrelated scalar state of two two mesons and b)...
An fMRI-constrained MEG source analysis with procedures for dividing and grouping activation (2002)
Fujimaki, N., Hayakawa, T., Nielsen, M., Knösche, Thomas R., Miyauchi, S.
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Concentration Fluctuations in Gas Releases by Industrial Accidents Final Report (2002)
M. Nielsen, P. C. Chatwin, H. E. Jørgensen, N. Mole, S. Ott
Abstract The COFIN project studied existing remote-sensing Lidar data on concentration fluctuations in atmospheric dispersion from continuous sources at ground level. Fluctuations are described by...
Means of Coordination. In (2002)
Peter Bøgh Andersen, Peter H. Carstensen, Morten Nielsen, P. B Andersen, P. H. Carstensen, M. Nielsen
Cooperative work is coordinated by means of many different media and codes: by means of oral or written language, by means of diagrams and maps, and by means of dedicated computer systems. The...
Nonseparable wavelet packets (2002)
Abstract. We introduce wavelet packets in the setting of a multiresolution analysis of L
Means of Coordination. In (2002)
Peter Bøgh Andersen, Peter H. Carstensen, Morten Nielsen, P. B Andersen, P. H. Carstensen, M. Nielsen
Cooperative work is coordinated by means of many different media and codes: by means of oral or written language, by means of diagrams and maps, and by means of dedicated computer systems. The...
Eriksen, J, Nielsen, M, Mortensen, JV, Schjørring, JK
The effect of S and N application on the distribution and redistribution of S compounds in spring barley (Hordeum vulgare L.) was investigated in pot experiments by determination of changes in the...
ACE-2 HILLCLOUD. An overview of the ACE-2 ground-based cloud experiment. (2000)
Bower, B. K. N., Choularton, T. W., Gallagher, M. W., Beswick, K. M., Flynn, M. J., Allen, A. G., ...
The ACE‐2 HILLCLOUD experiment was carried out on the island of Tenerife in June–July 1997 to investigate the interaction of the boundary layer aerosol with a hill cap cloud forming over a ridge...
The aim of this study was to investigate the association between false belief comprehension, the exhibition of pretend play and the use of mental state terms in pre-school children. Ferry children,...
Broad-Band Magnetic Brain Activity (2000)
Holroyd Nielsen Miyauchi, T. Holroyd, M. Nielsen, S. Miyauchi, T. Yanagida
this paper, we investigate the magnetic brain activity of subjects performing two rhythmic tapping and synchronization tasks. We use an adaptive linearfiltering technique known as differential...
Pre-resonant Charmonium-Nucleon Cross Section in the Model of the Stochastic Vacuum (1999)
Dosch, H. G., Navarra, F. S., Nielsen, M.
We calculate the nonperturbative charmonium - nucleon cross sections with the model of the stochastic vacuum, which has been succesfully applied in many high energy reactions. We also give a...
Charmonium-Hadron Cross Section in a Nonperturbative QCD Approach (1999)
Dosch, H. G., Navarra, F. S., Nielsen, M., Rueter, M.
We calculate the nonperturbative $J/\Psi-N$ and $\Psi'-N$ cross sections with the model of the stochastic vacuum which has been succesfully applied in many high energy reactions. We also give a...
Form Factors and Decay Rates for Heavy $\Lambda$ Semileptonic Decays from QCD Sum Rules (1999)
Navarra, F. S., Nielsen, M., Ferreira, E., Dosch, H. G.
QCD sum rules for the determination of form factors of $\Lambda_b$ and $\Lambda_c$ semileptonic decays are investigated. With a form for the baryonic current appropriate for the limits of the heavy...
Scale-Space Properties of Regularization Methods (1999)
M. Nielsen, P. Johansen, O. F. Olsen, J. Weickert (eds, Esther Radmoser, ...
. We show that regularization methods can be regarded as scale-spaces where the regularization parameter serves as scale. In analogy to nonlinear diusion ltering we establish continuity with respect...
A Scale-Space Approach to Nonlocal Optical Flow Calculations (1999)
M. Nielsen, P. Johansen, O. F. Olsen, J. Weickert (eds, Luis Alvarez, ...
. This paper presents an interpretation of a classic optical ow method by Nagel and Enkelmann as a tensor-driven anisotropic diusion approach in digital image analysis. We introduce an improvement...
QCD Sum Rules Calculation of Heavy $\Lambda$ Semileptonic Decay (1997)
Dosch, H. G., Ferreira, E., Nielsen, M., Rosenfeld, R.
We set up sum rules for heavy lambda decays in a full QCD calculation which in the heavy quark mass limit incorporates the symmetries of heavy quark effective theory. For the semileptonic $\La_c$...
Radiation dose measurements around the CERN high-energy accelerators - PSB, PS, and SPS (1996)
Bossard, P, Chanel, M, Coninckx, F, Izycka, A, Nielsen, M, Schönbacher, Helmut, ...
A Relativistic Thomas-Fermi Description of Collective Modes in Droplets of Nuclear Matter (1996)
Da Providência, C., Brito, L., Da Providência, J., Nielsen, M., Viñas, X.
Isoscalar collective modes in a relativistic meson-nucleon system are investigated in the framework of the time-dependent Thomas-Fermi method. The energies of the collective modes are determined by...
Calculation of $$ from QCD sum rule and the neutron-proton mass difference (1994)
Jin, X, Nielsen, M, Pasupathy, J
The proton matrix element of the isovector-scalar density, $/2M_p$, is calculated by evaluating the nucleon current correlation function in an external isovector-scalar field using the QCD sum-rule...
The human keratinocyte 2-dimensional gel protein database - update 1993 (1993)
Celis, Je, Rasmussen, Hh, Olsen, E, Madsen, P, Leffers, H, Honore, B, ...
The master two-dimensional gel database of human keratinocytes currently lists 3038 cellular proteins (2127 isoelectric focusing, IEF; and 911 nonequilibrium pH gradient electrophoresis, NEPHGE) many...
Ghost Poles in the Nucleon Propagator: Vertex Corrections and Form Factors (1993)
Krein, G., Nielsen, M., Puff, R. D., Wilets, L.
Vertex corrections are taken into account in the Schwinger-Dyson equation for the nucleon propagator in a relativistic field theory of fermions and mesons. The usual Hartree-Fock approximation for...
THE HUMAN KERATINOCYTE 2-DIMENSIONAL GEL PROTEIN DATABASE - UPDATE 1993. (1993)
CELIS, JE, RASMUSSEN, HH, OLSEN, E, MADSEN, P, LEFFERS, H, HONORE, B, ...
The human keratinocyte two-dimensional gel protein database: Update 1993 (1993)
CELIS, JE, RASMUSSEN, HH, OLSEN, E, MADSEN, P, LEFFERS, H, HONORE, B, ...
Celis, Je, Rasmussen, Hh, Madsen, P, Leffers, H, Honore, B, Dejgaard, K, ...
The master two-dimensional gel database of human keratinocytes currently lists 2980 cellular proteins (2098 isoelectric focusing, IEF; and 882 nonequilibrium pH gradient electrophoresis, NEPHGE) many...
Transport of high energy muons in a soil shield (1990)
Nelson, W R, Jenkins, T M, Stevenson, Graham Roger, Nielsen, M, Heijne, Erik H M, Jarron, Pierre, ...
Preliminary profile measurements of high-energy muon beams in a soil shield (1990)
Nelson, W R, Stevenson, Graham Roger, Heijne, Erik H M, Jarron, Pierre, Liu Kuei Lin, Nielsen, M
Radiation dose measurements around the CERN high-energy accelerators: PSB, PS, and SPS (1990)
Bossard, P, Chanel, M, Coninckx, F, Höfert, Manfred, Nielsen, M, Schönbacher, Helmut, ...
INVESTIGATION OF THE Au/Si (111) SURFACE STRUCTURES BY X-RAY DIFFRACTION (1989)
Feidenhans'L, R., Grey, F., Bohr, J., Nielsen, M., Johnson, R.
We have investigated the "5x1" and √3x√3R30° structures of Si(111) induced by adsorption of Au in the submonolayer regime. 52 and 13 symmetry-inequivalent structure factor intensities...
THE RELATIONSHIP BETWEEN THE METASTABLE AND STABLE PHASES OF Pb/Si (111) (1989)
Grey, F., Feidenhans'L, R., Nielsen, M., Johnson, R.
When Pb is deposited on the Si(111) 7x7 surface at room temperature, a metastable two-dimensional (2d) phase results. Using grazing incidence synchrotron surface x-ray diffraction, we show that this...
INVESTIGATION OF THE Au/Si (111) SURFACE STRUCTURES BY X-RAY DIFFRACTION (1989)
Feidenhans'L, R., Grey, F., Bohr, J., Nielsen, M., Johnson, R.
We have investigated the "5x1" and √3x√3R30° structures of Si(111) induced by adsorption of Au in the submonolayer regime. 52 and 13 symmetry-inequivalent structure factor intensities...
THE RELATIONSHIP BETWEEN THE METASTABLE AND STABLE PHASES OF Pb/Si (111) (1989)
Grey, F., Feidenhans'L, R., Nielsen, M., Johnson, R.
When Pb is deposited on the Si(111) 7x7 surface at room temperature, a metastable two-dimensional (2d) phase results. Using grazing incidence synchrotron surface x-ray diffraction, we show that this...
Pressure dependence of the critical fluctuations in the singlet-ground-state system, Pr3Tl (1979)
Kjems, J., Nielsen, M., Buyers, W., Crow, J.
The pressure dependence of the magnetization and of the critical fluctuations in a polycrystalline sample of Pr3Tl have been studied by neutron scattering. Above Tc the quasielastic intensity is...
ADSORBED LAYERS OF D2, H2, O2, AND 3He ON GRAPHITE STUDIED BY NEUTRON SCATTERING (1977)
Nielsen, M., Mctague, J., Ellenson, W.
The phase diagrams of adsorbed monolayers of D2, H2, O2, and 3He on graphite have been measured by neutron diffraction. H2 and D2-layers have a registered √3 structure at low coverages, and at...
Nielsen, M, Franken, P, Reinards, T, Weiss, M, Wagner, A, ...
Objective: To investigate the contribution of MYH associated polyposis coli (MAP) among polyposis families in the Netherlands, and the prevalence of colonic and extracolonic manifestations in MAP...
Breast cancer and atypia among young and middle-aged women: a study of 110 medicolegal autopsies.
Nielsen, M., Thomsen, J. L., Primdahl, S., Dyreborg, U., Andersen, J. A.
In 110 consecutive, medicolegal autopsies of young and middle-aged women (range 20-54 years) the breasts were examined by an extensive histopathologic method and by correlative specimen radiography....
Duodenal carcinoma in MUTYH‐associated polyposis
Nielsen, M, Poley, J W, Verhoef, S, Van Puijenbroek, M, Weiss, M M, Burger, G T, ...
Bi‐allelic germline mutations in the MUTYH gene give rise to multiple adenomas and an increased incidence of colorectal cancer. In addition, duodenal adenomas and other extra‐colonic...