(2023)
[65] H. Tanaka and K. Umeno, “Bayesian Updating on Time Intervals at Different Magnitude Thresholds in a Marked Point Process and Its Application to Synthetic Seismic Activity” (48 pages) to appear in Journal of Physical Society of Japan (2023) Vol. 92 (Accepted on November 10, 2023)
[64] H. Matsuyama, M-H. Kao, K. Umeno, “Super orthogonal chaos codes with primitive roots”,
to appear in JSIAM Letters (2023). (Accepted on October 10,2023)
[63] S. Kakinaka, T. Hayakawa, D. Kato and K. Umeno,
Fractal portfolio strategies: Does scale preference of investors matter?, Applied Economics Letters (2023).
[62] H. Tanaka and K. Umeno, A Bayesian Inference Method for a Large Magnitude Event
in a Spatiotemporal Marked Point Process Representing Seismic Activity, Journal of Physical Society of Japan (2023) Vol. 92, 113001.
[61] M. Shintani and K. Umeno, Average booking curves draw exponential functions, Scientific Reports (2023) Vol. 13, Article Number: 15773
[60] T. Mao, H. Okutomi and K. Umeno, Analysis of the limit values of chaos degree for infinite number of partitions in asymmetric tent maps, JSIAM Letters (2023) Vol. 15, pp.41-44.
[59] H. Matsuyama, M. Kao and K. Umeno, Independent component analysis communication using complex spreading sequence with constant power, JSIAM Letters (2023) Vol. 15, pp.37-40.
[58] P. Zitis, S. Kakinaka, K. Umeno, M. Hanias, S. Stravrinides and S. Potirakis, Investigating Dynamical Complexity and Fractal Characteristics of Bitcoin/US Dollar and Euro/US Dollar Exchange Rates around the COVID-19 Outbreak, Entropy (2023) Vol. 25, 214. https://doi.org/10.3390/e25020214
(2022)
[57] 梅野健, 可解カオスの数理と応用(4)ー可解カオスの揺籃としての虚数乗法論ー, 応用数理(2022), Vol. 32, No.4, pp. 221-234. https://doi.org/10.11540/bjsiam.32.4_221
[56] S. Kakinaka and K. Umeno, Asymmetric volatility dynamics in cryptocurrency markets on multi-time scales, Research in International Business and Finance (2022) Vol. 62,101754.
[55] T. Kano and K. Umeno, Chaotic synchronization of mutually coupled systems–arbitrary proportional linear relations, Chaos (2022) Vol. 32, Issue 11, 113137.
[54] 梅野健, 可解カオスの数理と応用(3)―情報保存則と完全暗号―, 応用数理(2022), Vol. 32, No.3, pp. 160-169. https://doi.org/10.11540/bjsiam.32.3_160
[53] 梅野健, 可解カオスの数理と応用(2)―双対性―, 応用数理(2022), Vol. 32, No.2, pp. 99-108. https://doi.org/10.11540/bjsiam.32.2_99
[52] K. Okubo and K. Umeno, Universal critical behavior of transition to chaos: Intermittency route, Progress of Theoretical and Experimental Physics (2022), Vol. 2022, Issue 7, https://doi.org/10.1093/ptep/ptac087
[51] M. Shintani and K. Umeno, General dynamic pricing algorithms based on universal exponential booking curves, JSIAM Letters (2022), Vol. 14 , pp. 49-52. https://doi.org/10.14495/jsiaml.14.49
[50] M. Shintani and K. Umeno, Time-Rescaling regression method for exponential decay time series predictions, JSIAM Letters (2022), Vol. 14 , pp. 45-48. https://doi.org/10.14495/jsiaml.14.45
[49] 梅野健, 可解カオスの数理と応用(1)―可解カオス写像―, 応用数理(2022), Vol. 32, No.1, pp.37-45.
https://doi.org/10.11540/bjsiam.32.1_37
[48]Y. Hikima, A. Iwasaki and K. Umeno, The reference distributions of Maurer’s universal statistical test and its improved tests, IEEE Transactions on Information Theory (2022), Vol. 68, No. Issue 4, pp.2674-2683. DOI:10.1109/TIT.2021.3131691
[47]S. Kakinaka and K. Umeno, Cryptocurrency market efficiency in short- and long-term horizons during COVID-19: An asymmetric multifractal analysis approach, Finance Research Letters (2022) 102319. https://doi.org/10.1016/j.frl.2021.102319
(2021)
[46]K. Umeno, R. Nakabayashi, T. Iwata and M-H. Kao, Capability of TEC correlation Analysis and Deceleration at Propagation Velocities of Medium-Scale Traveling Ionospheric Disturbances: Preseismic Anomalies before the Large Earthquakes, Open Journal of Earthquake Research (2021), Vol. 10, No. 4
[45]K. Umeno(2021). Elucidation of Chaotic Market Hypothesis Based on Ergodic Theory. In: Nishimura, K., Murase, M., Yoshimura, K. (eds) Creative Complex Systems. Creative Economy. Springer, Singapore. https://doi.org/10.1007/978-981-16-4457-3_12
[44]S. Kakinaka and K. Umeno, Exploring asymmetric multifractal cross-correlations of price-volatility and asymmetric volatility dynamics in cryptocurrency markets, Physica A (2021) Vol. 581, 126237. https://doi.org/10.1016/j.physa.2021.126237
[43]K. Okubo and K. Umeno, Infinite ergodicity that preserves the Lebesgue measure, Chaos (2021) Vol. 31, 033135. https://doi.org/10.1063/5.0029751
[42]K. Inoue, T. Mao, H. Okutomi and K. Umeno, An extension of the entropic chaos degree and its positive effect, Japan J. Indust. Appl. Math. (2021) Vol. 38, pp. 611–624. https://doi.org/10.1007/s13160-020-00453-9
[41]H. Tsuda and K. Umeno, Randomization Approaches for Reducing PAPR with Partial Transmit Sequence and Semidefinite Relaxation, IEICE Transactions on Communications, (2021) E104.B, pp. 262-275. https://doi.org/10.1587/transcom.2019EBP3243
(2020)
[40]S. Kakinaka and K. Umeno, Flexible two-point selection approach for characteristic function-based parameter estimation of stable laws, Chaos (2020) Vol. 30, Issue 7,073128.
https://doi.org/10.1063/5.0013148
[39]大久保健一, 梅野健, 一般化Boole変換におけるLyapunov指数の理論値を用いたレーザーカオスのカオス性評価, レーザー研究 (2020) Vol. 48, pp. 255-258. https://doi.org/10.2184/lsj.48.5_255
[38] 井上 啓, 真尾 朋行, 桒島 史欣, 堀田 大道, 奥富 秀俊, 梅野 健, 修正（拡張型）カオス尺度による半導体レーザーカオスの時系列解析, レーザー研究 (2020) Vol. 48, pp.239-244. https://doi.org/10.2184/lsj.48.5_239
[37]中澤 勇夫, 梅野 健, Almost Periodic Frequency Arrangement （APFA）のカオス性, レーザー研究 (2020) Vol. 48, pp.233-238. https://doi.org/10.2184/lsj.48.5_233
[36] K. Igarashi, T. Tsuchiya and K. Umeno, Characteristics of Anomalous Radio Propagation before and after the 2011 Tohoku-Oki Earthquake as Seen by Oblique Ionograms, Open Journal of Earthquake Research (2020) Vol. 9 No.2 DOI: 10.4236/ojer.2020.92007
[35]I. Nakazawa and K. Umeno, Chaotic property of almost periodic frequency arrangement (APFA), JSIAM Letters (2020) Vol. 12, pp.9-12. https://doi.org/10.14495/jsiaml.12.9
[34]S. Kakinaka and K. Umeno, Characterizing Cryptocurrency Market with Lévy’s Stable Distributions,
Journal of the Physical Society of Japan (2020), Vol. 89, 024802. https://doi.org/10.7566/JPSJ.89.024802
(2019)
[33]真尾朋行,奥富秀俊, 梅野健 カオス尺度とリアプノフ指数の差の解釈に基づく修正カオス尺度の提案,
日本応用数理学会論文誌, Vol. 29, No. 4, pp.383-394. https://doi.org/10.11540/jsiamt.29.4_383
[32]T. Mao, H. Okutomi and K. Umeno, Investigation of the difference between Chaos Degree and Lyapunov exponent for asymmetric tent maps, JSIAM Letters (2019) Vol. 11, pp.61-64. https://doi.org/10.14495/jsiaml.11.61
[31]S. Goto, R. Uchida, K. Igarashi C-H. Chen, M-H. Kao and K. Umeno, Preseismic Ionospheric Anomalies Detected Before the 2016 Taiwan Earthquake, Journal of Geophysical Research:Space Physics (2019) Vol. 124, Issue, pp. 9239-9252. https://doi.org/10.1029/2019JA026640
(2018)
[30]K. Okubo and K. Umeno, Universality of the route to chaos: Exact analysis, Progress of Theoretical and Experimental Physics (2018) Vol. 2018, Issue 10, 103A01. https://doi.org/10.1093/ptep/pty094
[29]A. Iwasaki and K. Umeno, Randomness Test to Solve Discrete Fourier Transform Test Problems, IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences(2018) Vol. E101-A, pp.1204-1214. DOI: 10.1587/transfun.E101.A.1204
[28]M. Shintani and K. Umeno,Super Generalized Central Limit Theorem —Limit Distributions for Sums of Non-identical Random Variables with Power Laws—, Journal of the Physical Society of Japan (Letter) (2018) Vol. 87, 043003 https://doi.org/10.7566/JPSJ.87.043003
[27]岩瀬 悠哉; 成瀬 康; 横田 悠右; 梅原 広明; 梅野 健, 歩行中の脳波に含まれるワークロード信号のブラインド信号源分離を用いた抽出, ヒューマンインタフェース学会論文誌(2018) 20巻3号, pp.353-360.
https://doi.org/10.11184/his.20.3_353
[26]H. Tsuda and K. Umeno, Weyl Spreading Sequence Optimizing CDMA, IEICE Transactions on Communications (2018) Vol. E101B No.3 pp.897-908. DOI: 10.15187/transcom.2017EBP3139
[25]A. Iwasaki and K. Umeno, Three theorems on odd degree Chebyshev polynomials and more generalized permutation polynomials over a ring of module \(2^w\). Japan J. Indust. Appl. Math.(2018) 35, pp.49–69. https://doi.org/10.1007/s13160-017-0275-7
[24]S. Goto and K. Umeno, Maps on statistical manifolds exactly reduced from the Perron-Frobenius equations for solvable chaotic maps, Journal of Mathematical Physics (2018)Vol. 59, Issue 3,
https://doi.org/10.1063/1.5001841
[23]M. Shintani and K. Umeno, Conditional Lyapunov exponent criteria in terms of ergodic theory, Progress of Theoretical and Experimental Physics (2018) Vol. 2018, Issue 1, 013A01, https://doi.org/10.1093/ptep/ptx168
[22]H. Tsuda and K. Umeno, Non-Linear Programming: Maximize SINR for Designing Spreading Sequence, IEEE Transactions on Communications (2018) Vol. 66, Issue 1, pp.279-289. DOI: 10.1109/TCOMM.2017.2748595
(2017)
[21]I. Nakazawa and K. Umeno, Fundamental study on almost periodic frequency arrangements for super-multi-access radio communication systems, IEICE Communications Express (2017) Vol. 6, No.12,pp.673-678. https://doi.org/10.1587/comex.2017XBL0135
[20]K. Okubo and K. Umeno, Physical Model of Energy Fluctuation Divergence, Journal of Condensed Matter Nuclear Science (2017) Vol. 24,Issue 1, pp.252-257.
[19]A. Iwasaki and K. Umeno, Further improving security of Vector Stream Cipher, Nonlinear Theory and Its Applications, IEICE (2017) Vol. 8, No. 3, pp.215-223. https://doi.org/10.1587/nolta.8.215
[18]H. Okada and K. Umeno, Randomness Evaluation With the Discrete Fourier Transform Test Based on Exact Analysis of the Reference Distribution, IEEE Transactions on Information Forensics and Security (2017), Vol. 12, Issue 5, pp.1218-1226. DOI: 10.1109/TIFS.2017.2656473
[17]T. Iwata and K. Umeno, Preseismic ionospheric anomalies detected before the 2016 Kumamoto earthquake, Journal of Geophysical Research:Space Physics (2017) Vol. 122, Issue 3, pp.3602-3616.https://doi.org/10.1002/2017JA023921
[16]A. Iwasaki and K. Umeno, One-stroke polynomials over a ring of modulo \(2^w\), JSIAM Letters (2017) Vol. 9, pp.5-8. https://doi.org/10.14495/jsiaml.9.5
[15]K. Okubo and K. Umeno, New Chaos Indicators for Systems with Extremely Small Lyapunov Exponents, In X. Leoncini, C. Eloy and G. Boedec (eds.) Chaos, Complexity and Transport (2017), pp.185-203. https://doi.org/10.1142/9789813202740_0011
(2016)
[14]H. Tsuda and K. Umeno, Orthogonal basis spreading sequence for optimal CDMA, JSIAM Letters (2016) Vol. 8, pp. 77-80. https://doi.org/10.14495/jsiaml.8.77
[13]T. Iwata and K. Umeno, Preseismic ionospheric anomalies detected before the 2016 Kumamoto earthquake, Journal of Geophysical Research:Space Physics (2017) Vol. 122, Issue 3, pp.3602-3616.
https://doi.org/10.1002/2017JA023921
[12]K. Umeno and K. Okubo, Exact Lyapunov exponents of the generalized Boole transformations, Progress of Theoretical and Experimental Physics (2016) vol. 2016, Issue 2. https://doi.org/10.1093/ptep/ptv195
[11]A. Iwasaki and K. Umeno, Improving security of Vector Stream Cipher, NOLTA , IEICE(2016) Vol. 7, Issue 1, pp. 30-37 https://doi.org/10.1587/nolta.7.30
[10]K. Umeno, Ergodic transformations on R preserving Cauchy laws, NOLTA , IEICE(2016) Vol. 7, Issue 1. pp.14-20(Invited Paper). https://doi.org/10.1587/nolta.7.14
(2015)
[9]H. Okada, K. Umeno, D. Handoko, M. Ihsan, R. Maharani, P. Nursetia, H. Rosyad, Warsito, Brain Electrical Capacitance Volume Tomography Signals Analysis with Moving Maximum Lyapunov Exponents,Advanced Science, Engineering and Medicine (2015), vol. 7, No. 10, pp. 897-899.DOI: https://doi.org/10.1166/asem.2015.1783
[8]大久保健一,梅野健,弱カオス系のカオス性判定について, 日本応用数理学会論文誌(2015), vol.25, No.3, pp. 165-190.https://doi.org/10.11540/jsiamt.25.3_165
[7]岡田大樹, 梅野健, 新たな非線形時系列解析の手法 －移動最大リアプノフ指数線によるカオス解析－,
レーザー研究(2015), Vol. 43, No. 6,pp.359-364. https://doi.org/10.2184/lsj.43.6_359
[6]Chen-An Yang, Kung Yao, Ken Umeno, and Ezio Biglieri, “Superefficient Monte Carlo Simulations” in Simulation Technologies in Networking and Communications Selecting the Best Tool for Test, Edited by Al-Sakib Khan Pathan, Mohammad Mostafa Monowar Shafiullah Khan (CRC Press, 2015) pp.69-91.
(2014)
[5] R. Takahashi and K. Umeno, Performance Evaluation of CDMA Using Chaotic Spreading Sequence with Constant Power in Indoor Power Line Fading Channels, IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (2014), Vol. 97-A, No. 7, pp.1619-1622.
(2013)
[4] K. Umeno and M-H. Kao, Chaos Theory as the answer to limited spectrum?, ITU News (2013) No. 10. https://www.itu.int/bibar/ITUJournal/DocLibrary/ITU011-2013-10-en.pdf
[3] C-A. Yang, K. Yao, K. Umeno and E. Biglieri, Using Deterministic Chaos for Superefficient Monte Carlo Simulations, IEEE Circuits and Systems Magazine (2013), Vol. 13, pp.26-35.
[2] 梅野健, 情報の統計力学, 数理科学 (2013) No. 600, pp.35-41.
[1] K. Umeno and A-H. Sato, Chaotic Method for Generating q-Gaussian Random Variables, IEEE Transactions on Information Theory (2013) Vol. 59, Issue 5, pp.3199-3209.