Ray Pörn

562 total citations
17 papers, 382 citations indexed

About

Ray Pörn is a scholar working on Control and Systems Engineering, Numerical Analysis and Education. According to data from OpenAlex, Ray Pörn has authored 17 papers receiving a total of 382 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Control and Systems Engineering, 6 papers in Numerical Analysis and 5 papers in Education. Recurrent topics in Ray Pörn's work include Advanced Optimization Algorithms Research (6 papers), Process Optimization and Integration (5 papers) and Optimization and Packing Problems (5 papers). Ray Pörn is often cited by papers focused on Advanced Optimization Algorithms Research (6 papers), Process Optimization and Integration (5 papers) and Optimization and Packing Problems (5 papers). Ray Pörn collaborates with scholars based in Finland and Slovenia. Ray Pörn's co-authors include Tapio Westerlund, Iiro Harjunkoski, Mats Braskén, Kaj-Mikael Björk, Sören Andersson, Kirsti Hemmi and Zdravko Kravanja and has published in prestigious journals such as Applied Energy, European Journal of Operational Research and Industrial & Engineering Chemistry Research.

In The Last Decade

Ray Pörn

16 papers receiving 363 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ray Pörn Finland	10	184	143	110	80	31	17	382
Robin Lougee-Heimer United States	3	52 0.3×	37 0.3×	70 0.6×	50 0.6×	29 0.9×	5	254
Daniel E. Steffy United States	8	50 0.3×	77 0.5×	100 0.9×	183 2.3×	56 1.8×	16	388
Oliver Bastert Germany	4	42 0.2×	54 0.4×	95 0.9×	95 1.2×	42 1.4×	5	251
Aida Khajavirad United States	13	119 0.6×	213 1.5×	51 0.5×	208 2.6×	47 1.5×	23	430
Lev Kazakovtsev Russia	9	53 0.3×	20 0.1×	67 0.6×	51 0.6×	122 3.9×	82	309
Alberto Del Pia United States	10	38 0.2×	105 0.7×	94 0.9×	159 2.0×	44 1.4×	37	320
Gregor Hendel Germany	7	42 0.2×	39 0.3×	68 0.6×	60 0.8×	52 1.7×	11	225
Christopher K. Monson United States	7	45 0.2×	11 0.1×	11 0.1×	96 1.2×	210 6.8×	13	285
Bernhard Bachmann Germany	12	241 1.3×	32 0.2×	7 0.1×	188 2.4×	18 0.6×	43	416
Marko Bošković Serbia	10	189 1.0×	6 0.0×	21 0.2×	6 0.1×	110 3.5×	41	398

Countries citing papers authored by Ray Pörn

Since Specialization

Citations

This map shows the geographic impact of Ray Pörn's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ray Pörn with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ray Pörn more than expected).

Fields of papers citing papers by Ray Pörn

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ray Pörn. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ray Pörn. The network helps show where Ray Pörn may publish in the future.

Co-authorship network of co-authors of Ray Pörn

This figure shows the co-authorship network connecting the top 25 collaborators of Ray Pörn. A scholar is included among the top collaborators of Ray Pörn based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ray Pörn. Ray Pörn is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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17 of 17 papers shown

Pörn, Ray, et al.. (2025). Evaluating running strategies for a P2X2P plant. Applied Energy. 391. 125838–125838.

Pörn, Ray, et al.. (2024). Attitudes towards and expectations on the role of artificial intelligence in the classroom among digitally skilled Finnish K-12 mathematics teachers. LUMAT International Journal on Math Science and Technology Education. 12(3). 15 indexed citations

Pörn, Ray, et al.. (2022). A Case Study on Programming in Finnish General Upper Secondary Education. Åbo Akademi University Research Portal. 1–2. 2 indexed citations

Braskén, Mats & Ray Pörn. (2021). Energy as a multidisciplinary concept in K-12 education – a case study. LUMAT International Journal on Math Science and Technology Education. 9(1). 1 indexed citations

Pörn, Ray, et al.. (2021). Inspiring or confusing – a study of Finnish 1–6 teachers’ relation to teaching programming. LUMAT International Journal on Math Science and Technology Education. 9(1). 8 indexed citations

Pörn, Ray, et al.. (2017). Solving 0–1 Quadratic Programs by Reformulation Techniques. Industrial & Engineering Chemistry Research. 56(45). 13444–13453. 2 indexed citations

Braskén, Mats & Ray Pörn. (2017). Studying rotational dynamics with a smartphone—accelerometer versus gyroscope. Physics Education. 52(4). 45024–45024. 7 indexed citations

Pörn, Ray & Mats Braskén. (2016). Interactive modeling activities in the classroom—rotational motion and smartphone gyroscopes. Physics Education. 51(6). 65021–65021. 10 indexed citations

Pörn, Ray, Kaj-Mikael Björk, & Tapio Westerlund. (2008). Global solution of optimization problems with signomial parts. Discrete Optimization. 5(1). 108–120. 37 indexed citations

10.

Pörn, Ray & Tapio Westerlund. (2000). A cutting plane method for minimizing pseudo-convex functions in the mixed integer case. Computers & Chemical Engineering. 24(12). 2655–2665. 26 indexed citations

11.

Harjunkoski, Iiro, Ray Pörn, & Tapio Westerlund. (1999). Exploring the convex transformations for solving non-convex bilinear integer problems. Computers & Chemical Engineering. 23. S471–S474. 2 indexed citations

12.

Pörn, Ray, Iiro Harjunkoski, & Tapio Westerlund. (1999). Convexification of different classes of non-convex MINLP problems. Computers & Chemical Engineering. 23(3). 439–448. 69 indexed citations

13.

Harjunkoski, Iiro, Tapio Westerlund, & Ray Pörn. (1999). Numerical and environmental considerations on a complex industrial mixed integer non-linear programming (MINLP) problem. Computers & Chemical Engineering. 23(10). 1545–1561. 31 indexed citations

14.

Westerlund, Tapio, et al.. (1998). An extended cutting plane method for a class of non-convex MINLP problems. Computers & Chemical Engineering. 22(3). 357–365. 76 indexed citations

15.

Harjunkoski, Iiro, et al.. (1998). Different transformations for solving non-convex trim-loss problems by MINLP. European Journal of Operational Research. 105(3). 594–603. 66 indexed citations

16.

Harjunkoski, Iiro, et al.. (1997). Different strategies for solving bilinear integer non-linear programming problems with convex transformations. Computers & Chemical Engineering. 21. S487–S492. 21 indexed citations

17.

Harjunkoski, Iiro, et al.. (1996). Comparison of different MINLP methods applied on certain chemical engineering problems. Computers & Chemical Engineering. 20. S333–S338. 9 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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