Ray Pörn
Ray Pörn
Principal lecturer, Novia University of Applied Sciences
Verified email at
Cited by
Cited by
Solving pseudo-convex mixed integer optimization problems by cutting plane techniques
T Westerlund, R Pörn
Optimization and Engineering 3 (3), 253-280, 2002
An extended cutting plane method for a class of non-convex MINLP problems
T Westerlund, H Skrifvars, I Harjunkoski, R Pörn
Computers & Chemical Engineering 22 (3), 357-365, 1998
Different transformations for solving non-convex trim-loss problems by MINLP
I Harjunkoski, T Westerlund, R Pörn, H Skrifvars
European Journal of Operational Research 105 (3), 594-603, 1998
Convexification of different classes of non-convex MINLP problems
R Pörn, I Harjunkoski, T Westerlund
Computers & chemical engineering 23 (3), 439-448, 1999
Maritime Inventory Routing Problems.
M Christiansen, K Fagerholt
Encyclopedia of optimization 2, 1947-1955, 2009
Global solution of optimization problems with signomial parts
R Pörn, KM Björk, T Westerlund
Discrete optimization 5 (1), 108-120, 2008
A cutting plane method for minimizing pseudo-convex functions in the mixed integer case
R Pörn, T Westerlund
Computers & Chemical Engineering 24 (12), 2655-2665, 2000
Numerical and environmental considerations on a complex industrial mixed integer non-linear programming (MINLP) problem
I Harjunkoski, T Westerlund, R Pörn
Computers & Chemical Engineering 23 (10), 1545-1561, 1999
Different strategies for solving bilinear integer non-linear programming problems with convex transformations
I Harjunkoski, R Pörn, T Westerlund, H Skrifvars
Computers & chemical engineering 21, S487-S492, 1997
Mixed integer non-linear programming: convexification techniques and algorithm development
R Pörn
na, 2000
Comparison of different MINLP methods applied on certain chemical engineering problems
H Skrifvars, I Harjunkoski, T Westerlund, Z Kravanja, R Pörn
Computers & chemical engineering 20, S333-S338, 1996
Interactive modeling activities in the classroom—rotational motion and smartphone gyroscopes
R Pörn, M Braskén
Physics Education 51 (6), 065021, 2016
Studying rotational dynamics with a smartphone—accelerometer versus gyroscope
M Braskén, R Pörn
Physics Education 52 (4), 045024, 2017
A mixed integer quadratic reformulation of the quadratic assignment problem with rank-1 matrix
O Nissfolk, R Pörn, T Westerlund, F Jansson
Computer Aided Chemical Engineering 31, 360-364, 2012
Solving 0–1 quadratic programs by reformulation techniques
R Pörn, O Nissfolk, A Skjal, T Westerlund
Industrial & Engineering Chemistry Research 56 (45), 13444-13453, 2017
MINLP: Trim-loss Problem.
I Harjunkoski, R Pörn, T Westerlund
Encyclopedia of Optimization, 2190-2198, 2009
21st European Symposium on Computer Aided Process Engineering (The Coulomb Glass - Modeling and Computational Experience with a Large Scale 0–1 QP Problem)
EN Pistikopoulos, MC Georgiadis, AC Kokossis
Elsevier 29, 658–662, 2011
Inspiring or Confusing--A Study of Finnish 1-6 Teachers' Relation to Teaching Programming.
R Pörn, K Hemmi, P Kallio-Kujala
LUMAT: International Journal on Math, Science and Technology Education 9 (1 …, 2021
The Coulomb Glass-Modeling and Computational Experience with a Large Scale 0–1 QP Problem
R Pörn, O Nissfolk, F Jansson, T Westerlund
Computer Aided Chemical Engineering 29, 658-662, 2011
Exploring the convex transformations for solving non-convex bilinear integer problems
I Harjunkoski, R Pörn, T Westerlund
Computers & Chemical Engineering 23, S471-S474, 1999
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