K. Hartmann

1.3k total citations · 1 hit paper
30 papers, 998 citations indexed

About

K. Hartmann is a scholar working on Plant Science, Electrical and Electronic Engineering and Molecular Biology. According to data from OpenAlex, K. Hartmann has authored 30 papers receiving a total of 998 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Plant Science, 11 papers in Electrical and Electronic Engineering and 5 papers in Molecular Biology. Recurrent topics in K. Hartmann's work include Light effects on plants (9 papers), Radio Frequency Integrated Circuit Design (8 papers) and Photosynthetic Processes and Mechanisms (5 papers). K. Hartmann is often cited by papers focused on Light effects on plants (9 papers), Radio Frequency Integrated Circuit Design (8 papers) and Photosynthetic Processes and Mechanisms (5 papers). K. Hartmann collaborates with scholars based in Germany, Switzerland and United States. K. Hartmann's co-authors include Hans Mohr, Uwe Meyer, M.J.O. Strutt, Jonathan Gressel, A. Grundy, Edgar Wagner, Andrew Mead, Frank Forcella, N. C. B. Peters and A.J. Murdoch and has published in prestigious journals such as Proceedings of the IEEE, IEEE Transactions on Microwave Theory and Techniques and IEEE Transactions on Electron Devices.

In The Last Decade

K. Hartmann

30 papers receiving 889 citations

Hit Papers

A GENERAL HYPOTHESIS TO INTERPRET ‘HIGH ENERGY PHENOMENA’... 1966 2026 1986 2006 1966 100 200 300
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. A GENERAL HYPOTHESIS TO INTERPRET ‘HIGH ENERGY PHENOMENA’ OF PHOTOMORPHOGENESIS ON THE BASIS OF PHYTOCHROME
    1966 342 citations K. Hartmann Photochemistry and Photobiology profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
K. Hartmann Germany 14 779 415 183 88 35 30 998
L. H. Pratt United States 19 1.0k 1.3× 803 1.9× 66 0.4× 7 0.1× 18 0.5× 28 1.2k
Tomoko Shinomura Japan 22 2.1k 2.7× 1.4k 3.5× 119 0.7× 15 0.2× 24 0.7× 44 2.3k
M. Tominaga Japan 18 846 1.1× 1.0k 2.5× 111 0.6× 14 0.2× 22 0.6× 31 1.3k
Bernard A. Hauser United States 21 1.3k 1.6× 1.1k 2.6× 191 1.0× 15 0.2× 17 0.5× 32 1.5k
Ladislav Malek Canada 9 192 0.2× 237 0.6× 55 0.3× 43 0.5× 36 1.0× 23 409
Katsushi Manabe Japan 14 680 0.9× 592 1.4× 81 0.4× 10 0.1× 8 0.2× 47 914
Shin-ichiro Inoue Japan 11 861 1.1× 625 1.5× 28 0.2× 27 0.3× 21 0.6× 20 951
Daniel L. Mullendore United States 12 780 1.0× 309 0.7× 54 0.3× 8 0.1× 19 0.5× 15 947
Chitose Kami Switzerland 8 967 1.2× 705 1.7× 37 0.2× 11 0.1× 6 0.2× 10 1.0k
Terena L. Holdaway‐Clarke United States 13 1.3k 1.7× 1.1k 2.7× 259 1.4× 4 0.0× 17 0.5× 17 1.5k

Countries citing papers authored by K. Hartmann

Since Specialization
Citations

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

Fields of papers citing papers by K. Hartmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K. Hartmann

This figure shows the co-authorship network connecting the top 25 collaborators of K. Hartmann. A scholar is included among the top collaborators of K. Hartmann 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 K. Hartmann. K. Hartmann 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.
Hartmann, K., et al.. (2005). Phytochrome-mediated long-term memory of seeds. PROTOPLASMA. 227(1). 47–52. 11 indexed citations
2.
Hartmann, K., et al.. (2000). Photocontrol of germination: sensitivity shift over eight decades within one week.. 125–131. 6 indexed citations
3.
Hartmann, K., et al.. (2000). The action spectrum for maximal photosensitivity of germination. Die Naturwissenschaften. 87(9). 398–403. 13 indexed citations
4.
Hartmann, K., et al.. (1990). Photocontrol of Weeds Without Herbicides. Die Naturwissenschaften. 77(4). 158–163. 72 indexed citations
5.
Hartmann, K., et al.. (1989). LOW COST DIGITAL SPECTRORADIOMETER*. Photochemistry and Photobiology. 49(6). 769–774. 5 indexed citations
6.
Wagner, Gottfried, et al.. (1987). ULTRAVIOLET QUANTUM YIELDS OF PHOTOPHOSPHORYLATION IN Halobacterium halobium*. Photochemistry and Photobiology. 45(2). 299–303. 2 indexed citations
7.
Hartmann, K.. (1976). Improvement of thyristor turn-on by calculation of the gate-cathode characteristic before injection. IEEE Transactions on Electron Devices. 23(8). 912–917. 2 indexed citations
8.
Hartmann, K.. (1976). Noise characterization of linear circuits. IEEE Transactions on Circuits and Systems. 23(10). 581–590. 19 indexed citations
9.
Hartmann, K. & M.J.O. Strutt. (1974). Computer Simulation of Small-Signal and Noise Behavior of Microwave Bipolar Transistors Up to 12 GHz. IEEE Transactions on Microwave Theory and Techniques. 22(3). 178–182. 4 indexed citations
10.
Hartmann, K. & M.J.O. Strutt. (1973). Scattering and noise parameters of four recent microwave bipolar transistors up to 12 GHz. Proceedings of the IEEE. 61(1). 133–135. 4 indexed citations
11.
Hartmann, K., et al.. (1973). Carotenoids and flavins versus phytochrome as the controlling pigment for blue-UV-mediated photoresponses. Zeitschrift für Pflanzenphysiologie. 69(2). 109–124. 26 indexed citations
12.
Hartmann, K. & M.J.O. Strutt. (1973). Changes of the four noise parameters due to general changes of linear two-port circuits. IEEE Transactions on Electron Devices. 20(10). 874–877. 32 indexed citations
13.
Hartmann, K., et al.. (1972). Computer-Aided Determination of the Small-Signal Equivalent Network of a Bipolar Microwave Transistor. IEEE Transactions on Microwave Theory and Techniques. 20(2). 120–126. 11 indexed citations
14.
Hartmann, K., et al.. (1971). Experimental gain parameters of three microwave-bipolar transistors in the 2- to 8-GHz range. Proceedings of the IEEE. 59(12). 1720–1721. 2 indexed citations
15.
Gressel, Jonathan & K. Hartmann. (1968). Morphogenesis in Trichoderma: Action spectrum of photoinduced sporulation. Planta. 79(3). 271–274. 56 indexed citations
16.
Hartmann, K.. (1967). Phytochrome 730 (P fr ), the effector of the ?high energy photomorphogenic reaction? in the far-red region. Die Naturwissenschaften. 54(20). 544–544. 25 indexed citations
17.
18.
Hartmann, K.. (1966). A GENERAL HYPOTHESIS TO INTERPRET ‘HIGH ENERGY PHENOMENA’ OF PHOTOMORPHOGENESIS ON THE BASIS OF PHYTOCHROME. Photochemistry and Photobiology. 5(5-6). 349–365. 342 indexed citations breakdown →
19.
Hartmann, K., et al.. (1964). Zellteilung und Zellwachstum im Hypokotyl vonLactuca sativa L. Unter dem Einfluss des Lichtes. Planta. 63(3). 253–268. 27 indexed citations
20.
Mohr, Hans, Uwe Meyer, & K. Hartmann. (1964). Die Beeinflussung der Farnsporen-Keimung [Osmunda cinnamomea (L.) undO. claytoniana (L.)] über das Phytochromsystem und die Photosynthese. Planta. 60(5). 483–496. 105 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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