A. Kowalczyk

Publication List Details

Period

1988 - 2009

Number

23

Co-Authors

Evidence of Ni break-up from total production cross sections in p+Ni collisions (2009)

Budzanowski, A., Fidelus, M., Filges, D., Goldenbaum, F., Hodde, H., Jarczyk, L., ...

The total production cross sections of light charged particles (LCPs), intermediate mass fragments (IMFs) and heavy reaction products of p+Ni collisions available in the literature have been compared...

Variation of nonequilibrium processes in p+Ni system with beam energy (2009)

Budzanowski, A., Fidelus, M., Filges, D., Goldenbaum, F., Hodde, H., Jarczyk, L., ...

The energy and angular dependence of double differential cross sections dsigma/dOmega dE were measured for p, d, t, 3,4He, 6,7Li, 7,9Be, and 10,11B produced in collisions of 0.175 GeV protons with Ni...

Comparison of nonequilibrium processes in p+Ni and p+Au collisions at GeV energies (2009)

Budzanowski, A., Fidelus, M., Filges, D., Goldenbaum, F., Hodde, H., Jarczyk, L., ...

The energy and angular dependence of double differential cross sections d2sigma/dOmega dE were measured for p, d, t, 3,4,6He, 6,7,8Li, 7,9,10Be, 10,11B, and C produced in collisions of 1.2, 1.9, and...

Competition of coalescence and "fireball" processes in nonequilibrium emission of light charged particles from p+Au collisions (2008)

Budzanowski, A., Fidelus, M., Filges, D., Goldenbaum, F., Hodde, H., Jarczyk, L., ...

The energy and angular dependence of double differential cross sections was measured for p,d,t,He,Li,Be, and B isotopes produced in collisions of 1.2 and 1.9 GeV protons with Au target. The shape of...

Examples of learning curves from a modified VC-formalism. (2007)

A. Kowalczyk, J. Szymanski, P.L. Bartlett, R.C. Williamson, J. Szyma Nski

We examine the issue of evaluation of model specific parameters in a modified VC-formalism. Two examples are analyzed: the 2-dimensional homogeneous perceptron and the 1-dimensional higher order...

machine and (2007)

A. Kowalczyk

of data representation of optimal kernel

Non-equilibrium emission of complex fragments from p+Au collisions at 2.5 GeV proton beam energy (2007)

Budzanowski, A., Filges, D., Goldenbaum, F., Heczko, A., Hodde, H., Jarczyk, L., ...

Energy and angular dependence of double differential cross sections d$^2\sigma$/d$\Omega$dE was measured for reactions induced by 2.5 GeV protons on Au target with isotopic identification of light...

An Analysis of the Anti-Learning Phenomenon for the Class Symmetric Polyhedron (2005)

Kowalczyk, A., Chapelle, O.

This paper deals with an unusual phenomenon where most machine learning algorithms yield good performance on the training set but systematically worse than random performance on the test set. This...

Transport analysis of K+ production in proton-nucleus reactions (2004)

Rudy, Z., Cassing, W., Jarczyk, L., Kamys, B., Kowalczyk, A., Kulessa, P.

The production of $K^+$ mesons in proton-nucleus collisions from 1.0 to 2.3 GeV is analyzed with respect to one-step nucleon-nucleon $(NN\to N Y K^+$) and two-step $\Delta$-nucleon $(\Delta N \to K^+...

The first MAJC microprocessor: A dual CPU system-on-a-chip (2001)

Kowalczyk, A, Adler, V, Amir, C, Chiu, F, Chng, CP, De Lange, WJ, ...

The first implementation of MAJC architecture achieves high performance by using very long instruction word (VLIW), single instruction multiple data (SIMD), and chip multiprocessing. The chip...

Experimental design in global compartmental analysis of reversible intramolecular two-state excited-state processes with added quencher (1997)

Kowalczyk, A, DeSchryver, FC, Ameloot, M

Although reversible intramolecular two-state excited-state processes without a priori information are unidentifiable, bounds on the excited-state rate constants k(ij) can be specified when a quencher...

Identifiability of competitive intermolecular three-state excited-state processes (1996)

Kowalczyk, A

The conditions necessary for the recovery of the rate constants from fluorescence decay traces due to competitive intermolecular three-state excited-state processes are investigated. The studied...

Identifiability of irreversible intermolecular two-state excited-state processes (1996)

Kowalczyk, A, Cielen, E

This report analyzes which kinetic and spectral parameters can be recovered by global compartmental analysis for intermolecular two-state excited-state processes when k(21)[M] (Scheme 1) is...

Photophysics of the fluorescent ca2+ indicator fura-2 (1995)

Deschryver, Fc, Ameloot, M, Steels, P, Gallay, J, ...

The photophysics of the complex forming reaction of Ca2+ and Fura-2 are investigated using steady-state and time-resolved fluorescence measurements. The fluorescence decay traces were analyzed with...

Parameter recovery and discrimination between different types of fluorescence decays obtained for dipole-dipole energy-transfer in low-dimensional systems (1994)

Ballet, P, Deschryver, Fc, Kowalczyk, A

In several low-dimensional systems deviations from the stretched exponential fluorescence decays of the donor in the presence of Forster-type energy transfer were attributed to microheterogeneity of...

Experimental-design in the global compartmental analysis of intermolecular 2-state excited-state processes (1994)

Kowalczyk, A, Deschryver, Fc

In order to successfully apply global compartmental analysis of fluorescence decay surfaces it is essential to rationally select the experimental conditions. This contribution investigates the...

Species-associated spectra and upper and lower bounds on the rate constants of reversible intramolecular 2-state excited-state processs with added quencher - global compartmental analysis of the fluorescence decay surface (1993)

Ameloot, M, Deschryver, Fc, Kowalczyk, A

This paper explains how, in the absence of any a priori information, upper and lower bounds can be specified for the four rate constants describing the kinetics of a reversible intramolecular...

Constructive higher-order network algorithm that is polynomial time (1993)

Redding, N.J., Kowalczyk, A., Downs, T.

Constructive learning algorithms are important because they address two practical difficulties of learning in artificial neural networks. First, it is not always possible to determine the minimal...

Constructive higher-order network algorithm that is polynomial time (1993)

Redding, N.J., Kowalczyk, A., Downs, T.

Constructive learning algorithms are important because they address two practical difficulties of learning in artificial neural networks. First, it is not always possible to determine the minimal...

Constructive higher-order network algorithm that is polynomial time (1993)

Redding, N.J., Kowalczyk, A., Downs, T.

Constructive learning algorithms are important because they address two practical difficulties of learning in artificial neural networks. First, it is not always possible to determine the minimal...

One-step parameter-estimation of the acid-base equilibria in the ground and excited-states of 2-naphthol by global compartmental analysis of the fluorescence decay surface (1992)

Deschryver, Fc, Ameloot, M, Gallay, J, Kowalczyk, A

In this paper a new implementation of global bicompartmental analysis of the fluorescence decay surface is presented and applied to the acid-base equilibria in the ground and excited states of...

MAGNETIC PROPERTIES OF R2Fe14-xMxB, R = Y, Gd, M = Si, Cr, Cu ALLOYS (1988)

Kowalczyk, A., Wrzeciono, A.

Structural and magnetic properties of R2Fe14-xMxB systems (R = Y, Gd, M = Si, Cr, Cu) are investigated. These compounds crystallize in a tetragonal system at P42/mnm-type for a Si content up to x =...

MAGNETIC PROPERTIES OF R2Fe14-xMxB, R = Y, Gd, M = Si, Cr, Cu ALLOYS (1988)

Kowalczyk, A., Wrzeciono, A.

Structural and magnetic properties of R2Fe14-xMxB systems (R = Y, Gd, M = Si, Cr, Cu) are investigated. These compounds crystallize in a tetragonal system at P42/mnm-type for a Si content up to x =...