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Ray Pörn

Observed names: Pörn, Ray, R. Pörn
ORCID: 0000-0001-5665-6031
Observed ORCID: 0000-0001-5665-6031
OpenAlex ID: A5077223284
Solving Pseudo-Convex Mixed Integer Optimization Problems by Cutting Plane Techniques
2002 · Tapio Westerlund, Ray Pörn · Optimization and Engineering · 114
An extended cutting plane method for a class of non-convex MINLP problems
1998 · Tapio Westerlund, Hans Skrifvars, et al. · Computers & Chemical Engineering · 102
Different transformations for solving non-convex trim-loss problems by MINLP
1998 · Iiro Harjunkoski, Tapio Westerlund, et al. · European Journal of Operational Research · 94
Convexification of different classes of non-convex MINLP problems
1999 · Ray Pörn, Iiro Harjunkoski, et al. · Computers & Chemical Engineering · 82
Attitudes towards and expectations on the role of artificial intelligence in the classroom among digitally skilled Finnish K-12 mathematics teachers
2024 · Ray Pörn, Mats Braskén, et al. · LUMAT International Journal on Math Science and Technology Education · 78
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Global solution of optimization problems with signomial parts
2008 · Ray Pörn, Kaj-Mikael Björk, et al. · Discrete Optimization · 50
Numerical and environmental considerations on a complex industrial mixed integer non-linear programming (MINLP) problem
1999 · Iiro Harjunkoski, Tapio Westerlund, et al. · Computers & Chemical Engineering · 40
A cutting plane method for minimizing pseudo-convex functions in the mixed integer case
2000 · Ray Pörn, Tapio Westerlund · Computers & Chemical Engineering · 33
Different Strategies for Solving Bilinear Integer Non-Linear Programming Problems with Convex Transformations
1997 · I. Harjunkoski, R. Pörn, et al. · Computers & Chemical Engineering · 29
Inspiring or confusing – a study of Finnish 1–6 teachers’ relation to teaching programming
2021 · Ray Pörn, Kirsti Hemmi, et al. · LUMAT International Journal on Math Science and Technology Education · 28
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Comparison of different MINLP methods applied on certain chemical engineering problems
1996 · Hans Skrifvars, Iiro Harjunkoski, et al. · Computers & Chemical Engineering · 18
Interactive modeling activities in the classroom—rotational motion and smartphone gyroscopes
2016 · Ray Pörn, Mats Braskén · Physics Education · 15
Studying rotational dynamics with a smartphone—accelerometer versus gyroscope
2017 · Mats Braskén, Ray Pörn · Physics Education · 11
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The Coulomb Glass - Modeling and Computational Experience with a Large Scale 0–1 QP Problem
2011 · Ray Pörn, Otto Nissfolk, et al. · Computer-aided chemical engineering/Computer aided chemical engineering · 7
Solving 0–1 Quadratic Programs by Reformulation Techniques
2017 · Ray Pörn, Otto Nissfolk, et al. · Industrial & Engineering Chemistry Research · 6
A Mixed Integer Quadratic Reformulation of the Quadratic Assignment Problem with Rank-1 Matrix
2012 · Otto Nissfolk, Ray Pörn, et al. · Computer-aided chemical engineering/Computer aided chemical engineering · 6
Mixed integer non-linear programming using cutting plane techniques
2000 · Ray Pörn, Tapio Westerlund · Computer-aided chemical engineering/Computer aided chemical engineering · 6
Energy as a multidisciplinary concept in K-12 education – a case study
2021 · Mats Braskén, Ray Pörn · LUMAT International Journal on Math Science and Technology Education · 4
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A Case Study on Programming in Finnish General Upper Secondary Education
2022 · Markus Norrby, Niklas Palmberg, et al. · Koli Calling International Conference on Computing Education Research · 3
Pupil-Robot Interaction in a Math Card Game: An Iterative Process of Studying the Use of Social Robotics in Primary School Math Education
2022 · Mattias Wingren, Mats Braskén, et al. · Lecture notes in networks and systems · 3
Exploring the convex transformations for solving non-convex bilinear integer problems
1999 · Iiro Harjunkoski, Ray Pörn, et al. · Computers & Chemical Engineering · 3
Testing the Non-Diagonal Quadratic Convex Reformulation Technique
2016 · Otto Nissfolk, Ray Pörn, et al. · Computer-aided chemical engineering/Computer aided chemical engineering · 2
Evaluating running strategies for a P2X2P plant
2025 · Johan Westö, Ray Pörn, et al. · Applied Energy · 1
Misconceptions and developmental proof
2017 · Hemmi, Kirsti, Julin, Erika, et al. · HAL · 1
A Numerical Model for the Construction of Finite Blaschke Products with Preassigned Distinct Critical Points
2018 · Glader, Christer, Pörn, Ray · arXiv (Cornell University)
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Works count: 30
Citation count: 744
H-index: 12
I10-index: 13
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