S. Koga

779 total citations
31 papers, 601 citations indexed

About

S. Koga is a scholar working on Statistical and Nonlinear Physics, Computer Networks and Communications and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, S. Koga has authored 31 papers receiving a total of 601 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Statistical and Nonlinear Physics, 7 papers in Computer Networks and Communications and 6 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in S. Koga's work include Nonlinear Dynamics and Pattern Formation (7 papers), Quantum chaos and dynamical systems (5 papers) and Advanced Welding Techniques Analysis (4 papers). S. Koga is often cited by papers focused on Nonlinear Dynamics and Pattern Formation (7 papers), Quantum chaos and dynamical systems (5 papers) and Advanced Welding Techniques Analysis (4 papers). S. Koga collaborates with scholars based in Japan. S. Koga's co-authors include Yoshio Kuramoto, Keigo Watanabe, Toshio Fukuda, Jun Tang, Masatoshi Nakamura, Mitsuo Fujimoto, Shoichi Shimizu, Toshihisa Ohshima, Shin‐ichi Sakasegawa and Mamoru Takahashi and has published in prestigious journals such as Applied Physics Letters, Applied and Environmental Microbiology and Physics Letters A.

In The Last Decade

S. Koga

29 papers receiving 564 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S. Koga Japan	11	262	210	98	94	81	31	601
Xiaoguang Wu China	14	193 0.7×	221 1.1×	33 0.3×	60 0.6×	53 0.7×	60	785
Mathias Bode Germany	15	402 1.5×	245 1.2×	22 0.2×	16 0.2×	39 0.5×	31	715
Xiaole Yue China	16	183 0.7×	445 2.1×	115 1.2×	70 0.7×	83 1.0×	63	775
Hubertus F. von Bremen United States	12	115 0.4×	205 1.0×	82 0.8×	34 0.4×	22 0.3×	17	497
Tatsunari Sakurai Japan	11	388 1.5×	164 0.8×	16 0.2×	20 0.2×	99 1.2×	36	594
J. C. Sartorelli Brazil	17	295 1.1×	361 1.7×	22 0.2×	21 0.2×	28 0.3×	49	692
William D. Kalies United States	15	74 0.3×	167 0.8×	82 0.8×	10 0.1×	63 0.8×	31	632
Marcio Gameiro United States	16	70 0.3×	138 0.7×	36 0.4×	28 0.3×	66 0.8×	40	728
Huiqing Zhang China	17	230 0.9×	623 3.0×	56 0.6×	39 0.4×	175 2.2×	38	973
Daishin Ueyama Japan	11	215 0.8×	116 0.6×	19 0.2×	13 0.1×	26 0.3×	23	451

Countries citing papers authored by S. Koga

Since Specialization

Citations

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

Fields of papers citing papers by S. Koga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of S. Koga

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

All Works

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20 of 20 papers shown

Kameyama, Naofumi, et al.. (2011). Modeling of Neutrals and H[sup −] Transport in a Large Negative Ion Source. AIP conference proceedings. 39–47. 1 indexed citations

Fujimoto, Mitsuo, S. Koga, Natsumi Abe, Yutaka S. Sato, & Hiroyuki Kokawa. (2008). Microstructural analysis of stir zone of Al alloy produced by friction stir spot welding. Science and Technology of Welding & Joining. 13(7). 663–670. 44 indexed citations

Koga, S.. (2006). Recent changes in office location in the Tokyo metropolitan area. Medical Entomology and Zoology. 593. 741–753. 2 indexed citations

Fujimoto, Mitsuo, et al.. (2005). Development of Friction Spot Joining. Welding in the World. 49(3-4). 18–21. 30 indexed citations

Watanabe, Keigo, Jun Tang, Masatoshi Nakamura, S. Koga, & Toshio Fukuda. (2002). Mobile robot control using fuzzy-Gaussian neural networks. 2. 919–925. 11 indexed citations

Koga, S., Masaharu Nishikido, Toshifumi Tsurusaki, et al.. (2001). [Clinical evaluation of renal angiomyolipoma].. PubMed. 47(10). 705–8. 1 indexed citations

Koga, S., Haruhiko Sakuraba, Mamoru Takahashi, et al.. (2000). Biochemical Characterization, Cloning, and Sequencing of ADP-Dependent (AMP-Forming) Glucokinase from Two Hyperthermophilic Archaea, Pyrococcus furiosus and Thermococcus litoralis. The Journal of Biochemistry. 128(6). 1079–1085. 67 indexed citations

Koga, S., et al.. (2000). Study of all position electron beam welding process for pipeline joints. Science and Technology of Welding & Joining. 5(2). 105–112. 4 indexed citations

Koga, S.. (1997). Scaling Laws of Moments in Sinai's Billiard Systems. I: The Case of Rectangular Lattice. Progress of Theoretical Physics. 97(3). 363–378.

10.

Koga, S., Jun Ogawa, Lailiang Cheng, et al.. (1997). Nucleoside Oxidase, a Hydrogen Peroxide-Forming Oxidase, from Flavobacterium meningosepticum. Applied and Environmental Microbiology. 63(11). 4282–4286. 7 indexed citations

11.

Koga, S.. (1996). Global Scaling Laws in 3D Sinai's Billiards. Progress of Theoretical Physics. 96(6). 1301–1305.

12.

Koga, S.. (1995). On Ergodicity in 3D Closed Billiards. Progress of Theoretical Physics. 93(1). 19–46. 2 indexed citations

13.

Kuroda, T., Kazuo Furuya, T. Kurasawa, et al.. (1995). Welding and cutting characteristics of blanket/first wall module to back plate for fusion experimental reactor. 341–344 vol.1. 1 indexed citations

14.

Koga, S.. (1993). Stably Propagating Periodic Waves in Intrinsically Bistable Reaction-Diffusion Systems. Progress of Theoretical Physics. 90(6). 1361–1366. 5 indexed citations

15.

Koga, S.. (1991). The Inverse Problem of Flobenius-Perron Equations in 1D Difference Systems: 1D Map Idealization. Progress of Theoretical Physics. 86(5). 991–1002. 20 indexed citations

16.

Koga, S., et al.. (1987). Anomalous electrical resistivity and nuclear magnetic resonance in rapidly quenched Cu-Mn-Al ribbons. IEEE Transactions on Magnetics. 23(5). 3089–3091. 2 indexed citations

17.

Koga, S.. (1982). Rotating Spiral Waves in Reaction-Diffusion Systems: Phase Singularities of Multi-Armed Waves. Progress of Theoretical Physics. 67(1). 164–178. 31 indexed citations

18.

Narita, K. & S. Koga. (1981). . Journal of the Magnetics Society of Japan. 5(2). 93–96. 2 indexed citations

19.

Kuramoto, Yoshio & S. Koga. (1981). Turbulized Rotating Chemical Waves. Progress of Theoretical Physics. 66(3). 1081–1085. 57 indexed citations

20.

Narita, K. & S. Koga. (1977). Constricted hysteresis loop and microstructure of Cu-Mn-Al alloys. Applied Physics Letters. 31(10). 712–714. 6 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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