Harald Ries

1.6k total citations
63 papers, 1.2k citations indexed

About

Harald Ries is a scholar working on Electrical and Electronic Engineering, Biomedical Engineering and Renewable Energy, Sustainability and the Environment. According to data from OpenAlex, Harald Ries has authored 63 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Electrical and Electronic Engineering, 20 papers in Biomedical Engineering and 17 papers in Renewable Energy, Sustainability and the Environment. Recurrent topics in Harald Ries's work include solar cell performance optimization (23 papers), Advanced optical system design (19 papers) and Solar Thermal and Photovoltaic Systems (16 papers). Harald Ries is often cited by papers focused on solar cell performance optimization (23 papers), Advanced optical system design (19 papers) and Solar Thermal and Photovoltaic Systems (16 papers). Harald Ries collaborates with scholars based in Germany, Switzerland and Israel. Harald Ries's co-authors include Julius Muschaweck, Roland Winston, Jeffrey M. Gordon, Ari Rabl, W. Spirkl, M. Schubnell, A. J. McEvoy, Jacob Karni, Ralf Leutz and Daniel Feuermann and has published in prestigious journals such as Journal of Applied Physics, Water Research and Solar Energy.

In The Last Decade

Harald Ries

61 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Harald Ries Germany 17 600 555 367 347 308 63 1.2k
Juan C. Miñano Spain 26 1.4k 2.3× 1.3k 2.3× 542 1.5× 657 1.9× 658 2.1× 212 2.4k
Raymond K. Kostuk United States 23 253 0.4× 1.5k 2.7× 291 0.8× 920 2.7× 438 1.4× 167 2.0k
Tobias Schmid Germany 14 324 0.5× 174 0.3× 90 0.2× 286 0.8× 159 0.5× 55 552
Maximino Avendaño‐Alejo Mexico 17 462 0.8× 316 0.6× 62 0.2× 329 0.9× 167 0.5× 84 935
Jinlong Zhu China 18 365 0.6× 345 0.6× 19 0.1× 237 0.7× 129 0.4× 102 964
Sajan Shrestha United States 12 744 1.2× 688 1.2× 15 0.0× 959 2.8× 180 0.6× 28 2.4k
F. Francini Italy 15 223 0.4× 199 0.4× 411 1.1× 75 0.2× 12 0.0× 81 888
Feihong Yu China 13 254 0.4× 247 0.4× 32 0.1× 163 0.5× 56 0.2× 109 656
Xiang Gao China 21 278 0.5× 799 1.4× 27 0.1× 202 0.6× 66 0.2× 159 1.3k

Countries citing papers authored by Harald Ries

Since Specialization
Citations

This map shows the geographic impact of Harald Ries'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 Harald Ries with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Harald Ries more than expected).

Fields of papers citing papers by Harald Ries

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Harald Ries. 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 Harald Ries. The network helps show where Harald Ries may publish in the future.

Co-authorship network of co-authors of Harald Ries

This figure shows the co-authorship network connecting the top 25 collaborators of Harald Ries. A scholar is included among the top collaborators of Harald Ries 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 Harald Ries. Harald Ries is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Hofmann, Angelika, Julia Unterhinninghofen, Harald Ries, & S. Kaiser. (2012). Double tailoring of freeform surfaces for off-axis aplanatic systems. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8550. 855014–855014. 5 indexed citations
2.
Ries, Harald, et al.. (2008). Street-lighting with LEDs. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 7103. 71030H–71030H. 3 indexed citations
3.
Ries, Harald, et al.. (2007). Strategy based on information entropy for optimizing stochastic functions. Physical Review E. 75(2). 21108–21108. 3 indexed citations
4.
Leutz, Ralf, Ling Fu, & Harald Ries. (2006). Carambola optics for recycling of light. Applied Optics. 45(12). 2572–2572. 2 indexed citations
5.
Fu, Ling, Ralf Leutz, & Harald Ries. (2006). Beating the brightness theorem: thermodynamics of light recycling (experimental). Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 6033. 603304–603304.
6.
Ries, Harald, et al.. (2005). Optimized tailoring for lens design. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5875. 58750A–58750A. 1 indexed citations
7.
Leutz, Ralf & Harald Ries. (2005). Microstructured light guides overcoming the two-dimensional concentration limit. Applied Optics. 44(32). 6885–6885. 10 indexed citations
8.
Ries, Harald. (2005). Laser beam shaping by double tailoring. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5876. 587607–587607. 7 indexed citations
9.
Leutz, Ralf & Harald Ries. (2003). Squaring the circle: the use of microstructures for converting and homogenizing beam patterns. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5186. 106–106. 1 indexed citations
10.
Ries, Harald & Julius Muschaweck. (2002). Tailored freeform optical surfaces. Journal of the Optical Society of America A. 19(3). 590–590. 302 indexed citations
11.
Ries, Harald, et al.. (2001). New Methods of Reflector Design. Optics and Photonics News. 12(8). 46–46. 2 indexed citations
12.
Kribus, Abraham, et al.. (2000). Optical assessment of nonimaging concentrators. Applied Optics. 39(31). 5679–5679. 11 indexed citations
13.
Kribus, Abraham, et al.. (2000). Faceted concentrators optimized for homogeneous radiation. Applied Optics. 39(7). 1152–1152. 16 indexed citations
14.
Ries, Harald & Julius Muschaweck. (1999). <title>Double-tailored microstructures</title>. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 3781. 124–128. 5 indexed citations
15.
Feuermann, Daniel, Jeffrey M. Gordon, & Harald Ries. (1998). Nonimaging optical designs for maximum-power-density remote irradiation. Applied Optics. 37(10). 1835–1835. 7 indexed citations
16.
Shatz, Narkis, John C. Bortz, Harald Ries, & Roland Winston. (1997). <title>Nonrotationally symmetric nonimaging systems that overcome the flux-transfer performance limit imposed by skewness conservation</title>. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 3139. 76–85. 5 indexed citations
17.
Spirkl, W., et al.. (1997). <title>Asymmetrical cone-type secondary concentrators for Fresnel-type reflectors in solar towers</title>. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 3139. 86–93. 1 indexed citations
18.
Winston, Roland & Harald Ries. (1993). <title>Nonimaging reflectors as functionals of the desired irradiance</title>. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 2016. 2–11. 6 indexed citations
19.
Spirkl, W. & Harald Ries. (1986). Non‐stationary Markov chains for modelling daily radiation data. Quarterly Journal of the Royal Meteorological Society. 112(474). 1219–1229. 8 indexed citations
20.
Ries, Harald. (1982). Thermodynamic limitations of the concentration of electromagnetic radiation. Journal of the Optical Society of America. 72(3). 380–380. 43 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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