Li Yorke 1) 2) 3) Lorenz 4) 1960 Li Yorke Ruelle Takens ) 1970 Lorenz ) Birkhoff ) Smale 8) 9) 1
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1 c /(37)
2 Li Yorke 1) 2) 3) Lorenz 4) 1960 Li Yorke Ruelle Takens ) 1970 Lorenz ) Birkhoff ) Smale 8) 9) chaotic attractor x x ω ω(x) A ω(x) A x A basin domain of attraction A c /(37)
3 10) Duffing Japanese attractor Lorenz Lorenz attractor E dx/dt = σ(y x), dy/dt = rx y xz, dz/dt = xy bz σ, r, b 21 (a) O. E dx/dt = y z, dy/dt = x + ay, dz/dt = bx (c x)z a, b, c 21 (b) c /(37)
4 z 50 z x y y x (a) (b) 21 (a), σ = 10, b = 8/3, r = 28. (x 0, y 0, z 0 ) = (0.5, 1, 22). (b), a = 0.2, b = 0.2, c = 5(x 0, y 0, z 0 ) = ( 1, 0.5, 0). 1) T.-Y. Li and J.A. Yorke, Period three implies chaos, Amer. Math. Monthly, vol.82, no.10, pp , ) B.R. Hunt, J.A. Kennedy, T.-Y. Li and H.E. Nusse (eds), The theory of chaotic attractors, Springer, ) Y. Ueda, Strange attractors and the origin of chaos, in The impact of chaos on science and society (C. Grebogi and J. A. Yorke (eds.)), United Nations University Press, ) E.N. Lorenz, Deterministic nonperiodic flow, Journal of the Atomospheric Sciences, vol.20, no.2, pp , ) D. Ruelle and F. Takens, On the nature of turbulence, Commun. Math. Phys., vol.20, pp , ),,, ) G.D. Birkhoff and P.A. Smith, Structure analysis of surface transformations, J. Math. (Liouville), S.9, vol.7, pp , ) S. Smale, Differentiable dynamical systems, Bull. Amer. Math. Soc., vol.73, pp , ),,, ) J. Milnor, On the concept of attractor, Commun. Math. Phys., vol.99, pp , c /(37)
5 , 2) ) IC 3. 1? 22 N i = G(v D ) Linear sub-circuit N C i D + v C 2 N + v 2 g L i C 1 i + D v 1 22 N N g c /(37)
6 C 1 d dt v 1 = i G(v), C 2 d dt v 2 = i + gv 2, L d dt i = v 1 + v 2 (21) G(v) 4) 5) 2 23 (a) N v V T S v E N v r 0 v r 0 N v (b) S off v (c) S S v = E (d) C d dt v = i L d dt i = v + Ri (v(t + ), i(t + )) = (E, i(t)) if v(t) = V T (22) 6). 7) Linear sub-circuit N (a) + v r 0 0 C E v =V T S E v (c ) V T t N (b ) i R L + v r 0 0 C E v =V T S i [ma] 0.2 (d ) v [v] c /(37)
7 8, DC-DC 9) 24 V i S S S on i off S on S on off V i 24 S D L i C R + v o V i i L S DC-DC D C R + v o 10) ) ) 13) ) ) 16) c /(37)
8 Na Hz 6.3 Hz 25(A) φ 25(B) φ φ = 0 φ = 360 φ { P 1, P 2, P 3, } 25(B)(a) 25(B)(b) 25(C) 25(C) (a) (d) 25(C) (e) (i) 25 A 13) (a) (b) B3 16) (a) (b) C (a i) 13) (j) φ D 13) F : V n V n+1 25(D)V 0 = F(V 0 ) V 0 25(D)(a) V 1 25(D)(b) c /(37)
9 ) 1985 CA3 18) 19) 20) 21) ) 26(a) 2 x m 2 26(b) 26(c) 23) AFM MEMSmicro-electromechanical system c /(37)
10 NEMSnano-electromechanical system AFM 24) 22) y x Coil spring y x o m x (b) x y (a) 2 (c) Haken Maxwell-Bloch Lorenz 25) ) 27) 28) 3 khzmhz 29) GHz 28) c /(37)
11 27 30 cm 1 ns 1 GHz Lang-Kobayashi 28) GHz GHz 30) 120 km 2.4 Gb/sGigabit per second 31) 32) Mb/s 1 Gb/s 1.7 Gb/s 32) (a) Laser light Mirror (b) Intensity arb. units Ti m e n s 27 (a) (b) 1) T. Endo and T. Saito, Chaos in electrical and electronic circuits and systems, Trans. IEICE, vol.e73, no.6, pp , ) T. Kanamaru, Duffing oscillator, Scholarpedia, vol.3, no.3, p.6327, c /(37)
12 3),,, ), 1 -,, vol.j71-a, no.6, pp , ) L.O. Chua, Chua circuit, Scholarpedia, vol.2, no.10, p.1488, ) T. Saito, Chaotic spiking oscillators, Scholarpedia, vol.2, no.9, p.1831, ) E.M. Izhikevich, Bursting, Scholarpedia, vol.1, no.3, p.1300, ) C.K. Tse and M. di Bernardo, Complex behavior in switching power converters, Proc. IEEE, vol.90, pp , ) S. Banerjee and G.C. Verghese, eds., Nonlinear phenomena in power electronics: attractors, bifurcations, chaos, and nonlinear control, IEEE Press, ),,,, ) M. Guevara, L. Glass, and A. Shrier, Phase locking, period-doubling bifurcations, and irregular dynamics in periodically stimulated cardiac cells, Science, vol.214, no.4527, pp , ) H. Hayashi, M. Nakao, and K. Hirakawa, Chaos in the self-sustained oscillation of an excitable biological membrane under sinusoidal stimulation, Phys. Lett., vol.88a, no.5, pp , ) H. Hayashi, S. Ishizuka, M. Ohta, and K. Hirakawa, Chaotic behavior in the Onchidium giant neuron under sinusoidal stimulation, Phys. Lett., vol.88a, no.8, pp , ) G. Matsumoto, K. Aihara, M. Ichikawa, and A. Tasaki, Periodic and nonperiodic responses of membrane potentials in squid giant axons during sinusoidal current stimulation, J. Theor. Neurobiol., vol.3, pp.1-14, ) D.R. Chialvo, R.F. Gilmour Jr., and J. Jalife, Low dimensional chaos in cardiac tissue, Nature, vol.343, no.6259, pp , ),,, ) H. Hayashi and S. Ishizuka, Chaotic nature of bursting discharges in the Onchidium pacemaker neuron, J. Theor. Biol., vol.156, no.3, pp , ) H. Hayashi and S. Ishizuka, Chaotic responses of the hippocampal CA3 region to a mossy fiber stimulation in vitro, Brain Res., vol.686, no.2, pp , ) S. Ishizuka and H. Hayashi, Chaotic and phase-locked responses of the somatosensory cortex to a periodic medial lemniscus stimulation in the anesthetized rat, Brain Res., vol.723, no.1-2, pp.46-60, ) A. Skarda and W.J. Freeman, How brains make chaos in order to make sense of the world, Behav. Brain Sci., vol.10, no.2, pp , ) I. Tsuda, Dynamic link of memory - chaotic memory map in nonequilibrium neural networks, Neural Networks, vol.5, no.2, pp , ) S. Shaw and B. Balachandran, A review of nonlinear dynamics of mechanical systems in year 2008, J. System Design and Dynamics, Vol.2, No.3, pp , ) A. Nayfeh and P. Pai, Linear and nonlinear structural mechanics, Wiley-Interscience, ) F. Pfeiffer and C. Glocker, Multibody dynamics with unilateral contacts, Wiley-Interscience, ) H. Haken, Analogy between higher instabilities in fluids and lasers, Phys. Lett. A, vol.53, pp.77-78, ) K. Ikeda, Multiple-valued stationary state and its instability of the transmitted light by a ring cavity system, Opt. Commun., vol.30, pp , ) F.T. Arecchi, G.L. Lippi, G.P. Puccioni, and J.R. Tredicce, Deterministic chaos in lasers with injected signal, Opt. Commun., vol.51, pp , ) J. Ohtsubo, Semiconductor Lasers, - Stability, Instability and Chaos -, Second Edition, Springer- Verlag, Berlin Heidelberg, c /(37)
13 29) K. Otsuka, Nonlinear Dynamics in Optical Complex Systems, KTK Scientific Publishers, Tokyo, ) A. Uchida, F. Rogister, J. Garcia-Ojalvo, and R. Roy, Synchronization and communication with chaotic laser systems, Progress in Optics, edited by E. Wolf, vol.48, chap.5, pp , Elsevier, The Netherlands, ) A. Argyris, D. Syvridis, L. Larger, V. Annovazzi-Lodi, P. Colet, I. Fischer, J. Garcia-Ojalvo, C.R. Mirasso, L. Pesquera, and K.A. Shore, Chaos-based communications at high bit rates using commercial fibre-optic links, Nature, vol.438, pp , ) A. Uchida, K. Amano, M. Inoue, K. Hirano, S. Naito, H. Someya, I. Oowada, T. Kurashige, M. Shiki, S. Yoshimori, K. Yoshimura, and P. Davis, Fast physical random bit generation with chaotic semiconductor lasers, Nature Photonics, vol.2, no.12, pp , c /(37)
14 ver.1 / m x M f : M M x(t + 1) = f (x(t)) x(t) ϕ : M R s(t) = ϕ(x(t)) {s(t)} x(t) ϕ {s(t)} x(t) Takens 1) ) Φ d (x) = (ϕ(x), ϕ( f (x)),, ϕ( f (d 1) (x))) (23) x C r M N Ψ : M N Ψ 1 1 Ψ 1 1 M C r D r (M) C r ϕ C r (M, R) : m M d 2m+1 Φ d (x) r 1 D r (M) C r (M, R) ϕ c /(37)
15 ver.1 / ) Sauer 3) 2 2) 4) 5) 6) sensitive dependence on initial conditions 2 Lyapunov exponents ɛ 0 t ɛ 0 e λt λ λ < 0 2 x(t + 1) = f (x(t)) λ 1 λ = lim N N N log f (x(t)) t=1 x(t) t (24) x(t + 1) = ax(t)(1 x(t)) 29(a) 29(a) a 29(a) λ > 0 3 (24) k k λ i (i = 1, 2,..., k) 1 λ i = lim N N log σ i(n) 1/2N N N σ i (N) J t J t t=0 t=0 (25) J t k F c /(37)
16 ver.1 / t, (25) QR 7) λ 1 29(b) c 29(a) λ 1 > 0 x(t) LargestLyapunovExponent ParameterofLogisticmap(a) (a) LargestLyapunovExponent X n ParameterofRosslerSystem (c) (b) 29 (a) (b) correlation dimension correlation integral 8) 2 v(i) R m C m 1 (r) = lim N N 2 N I(r v(i) v( j) ) i, j=1 i j (26) I(t) 3 (26) C m (r) r ν ν correlation dimension m ν 210(a) 210(b) γ 3 c /(37)
17 ver.1 / (a) N = 128 N = 32, 768 N = 21, m = 2 m = m log C m (r) N= 128 N= N= 512 N= N= N= 4096 N= N=16384 N= log r log C m (r) m= 2 m= 3 m= 4 m= 5 m= 6 m= 7 m= 8 m= 9 m= log r slope 4 3 slope log r (a) log r (b) (a) (b) γ ) local model global model c /(37)
18 ver.1 / x(t) x(t) y(t) = (x(t), x(t τ),, x(t (d 1)τ)) t N(t) = {s = 1, 2,, t 1 y(t) y(s) ɛ}. (27) ɛ t + 1 ˆx(t + 1) N(t) ˆx(t + 1) = 1 x(s + 1). N(t) s N(t) (28) N(t) ˆx(t + 1) = a i x(t i) i 2 radial basis functions ˆx(t + 1) = a i Φ( y(t) c i ) i (29) (210) Φ 0 c i a i ˆx(t + 1) = 1 + exp(b i y(t) c i ) i (211) 10) cross validation c /(37)
19 ver.1 / , 12) 3 2 x(t+1) = φ(y(t)) x(t+ p) = φ p (y(t)) φ p ξφ 13) q 1 q Q q φ q (y(t)) z( t) = (φ 1 (y(t)), φ 2 (y(t)),, φ Q (y(t))) z(t) x(t + p) x(t + p) = ξ(z(t)) ξ ξ recurrence plots 14, 15) 2 14) k ɛ d x(t) R d (t = 1, 2,, T) Θ(y) y > 0 Θ(y) = 1y 0 Θ(y) = 0 R i, j (ɛ) R i, j (ɛ) = Θ(ɛ x(i) x( j) ) R i, j (ɛ) = 1 (i, j) R i, j (ɛ) = 0 (i, j) i z 2 i ) L 1 ( z 1 = i z i )L 2 ( z 2 = L ( z = max i z i ) 16) Line of IdentityLOI LOI c /(37)
20 ver.1 / LOI LOI LOI 2 laminar 211 (a)(b)(c) (d)(e)(f) (a)(d) (b)(e) (c)(f) 10% DET 15) DET LOI LOI DET LOI 15) 17) 18, 19) c /(37)
21 ver.1 / , 21, 22) 23) 4 24, 22, 25) 5 2 cross recurrence plots 26, 27) x(t), y(t) R d C i, j (ɛ) = Θ(ɛ x(i) y( j) ) x(i) y( j) joint recurrence plots 28) J i, j (ɛ 1, ɛ 2 ) R 1 i, j (ɛ 1) R 2 i, j (ɛ 2) J i, j (ɛ 1, ɛ 2 ) = R 1 i, j (ɛ 1)R 2 i, j (ɛ 2) 29, 30, 31) ) ) 2 34) {s t } N t=1 τ d x t = (s t, s t τ,, s t (d 1)τ )(t = (d 1)τ + 1,, N) (d 1)τ + 1 N 1 l T t T x t k i n i (t) x ni(t) m x ni(t)+m v i (t) = x ni(t)+m x ni(t) v i (t) translation vector m i v c /(37)
22 ver.1 / v(t) = 1 k + 1 k v i (t) i=0 (212) e(t) e(t) = 1 k + 1 k v i (t) v(t) 2 i=0 v(t) 2 (213) e(t) x(t) m e(t) v i (t) 0 e(t) T ) 3 DET 15) R 36) R x(i) x(i + 1) x(i) R / R R surrogate data surrogates c /(37)
23 ver.1 / ) (i) α (ii) (1/α 1) (2/α 1) (iii) (iv) 2 a random shuffle surrogates 38) b 39, 40) 41) 42) 43, 41) c 44, 45) (i) y(t) (ii) s(1) (iii) s(i) exp( y(t ) s(i) /ρ) 1 y(t) y(t + 1) s(i + 1) 46) d twin surrogates 47) c /(37)
24 ver.1 / i(1) i( j) i( j) + 1 i( j + 1) k k + 1 i( j + 1) 47) (i) x y x (ii) t i (i = 1, 2,, 2/α 1) (2/α 1) (iii) x y S (x, y) (iv) t i y S (t i, y) (v) S (x, y) S (t i, y) e 48) 49, 50) 51) f 52) 53) 54) 3 pivotal 55) 55) c /(37)
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27 ver.1 / synchronisation, Europhys. Lett., vol.75, no.4, pp , ) M.B. Kennel, Statistical test for dynamical nonstationarity in observed time-series data, Phys. Rev. E, vol.56, no.1, pp , ) T. Nakamura and M. Small, Small-shuffle surrogate data: Testing for dynamics in fluctuating data with trends, Phys. Rev. E, vol.72, no.5, Article Number , ) T. Nakamura, Y. Hirata, and M. Small, Testing for correlation structures in short-term variabilities with long-term trends of multivariate time series, Phys. Rev. E, vol.74, no.4, Article Number , ) T. Nakamura, M. Small, and Y. Hirata, Testing for nonlinearity in irregular fluctuations with long-term trends, Phys. Rev. E, vol.74, no.2, Article Number , ) T. Schreiber, Constrained randomization of time series data, Phys. Rev. Lett., vol.80, no.10, pp , ) A. Schmitz and T. Schreiber, Testing for nonlinearity in unevenly sampled time series, Phys. Rev. E, vol.59, no.4, pp , ) Y. Hirata, Y. Katori, H. Shimokawa, H. Suzuki, T.A. Blenkinsop, E.J. Lang, and K. Aihara, Testing a neural coding hypothesis using surrogate data, J. Neurosci. Meth., vol.172, no.2, pp , ) J. Theiler and D. Prichard, Constrained-realization Monte-Carlo method for hypothesis testing, Physica D, vol.94, no.4, pp , c /(37)
28 X 1 (t), X 2 (t) 1) 2, (1) 3) 4,, (2) 5), (3) 6), (4) 7) 20 (A) 20 (B) X (t) 2 0 X (t) X (t) X (t) C = 0.2. (2 14) ( x 1 (t) x 2 (t))(a) C = 0.05, (B) X 1 (t) = X 2 (t) dx 1,2 dt dy 1,2 dt dz 1,2 dt = ω 1,2 y 1,2 z 1,2 + C(x 2,1 x 1,2 ), = ω 1,2 x 1, y 1,2, (214) = z 1,2 (x 1,2 10). X 1 = (x 1, y 1, z 1 ) X 2 = (x 2, y 2, z 2 ) C ω 1,2 = 0.97± ω ω c /(37)
29 ω = 0 x 1 (t) x 2 212(A) C = 0.05 x 1 (t) = x 2 (t) 212(B) C = 0.2 x 1 (t) = x 2 (t), y 1 (t) = y 2 (t), z 1 (t) = z 2 (t) 6) d (x, y) (0, 0) 213(A) (x, y) φ(t) = arctan( y x ) 6) nφ 1 (t) mφ 2 (t) < const φ 1, φ 2 n, m const. (214) ω = 0.02 (0, 0) (x, y) φ(t) n m φ (n,m) (t) = nφ 1 (t) mφ 2 (t) 1 1 φ (1,1) 1 1 C = 0.03, 0.035, φ(t) 213(B). C = C = π C = c /(37)
30 Y(t) (A) X(t) Angle φ φ Phase Difference (B) Time C=0.03 C=0.035 C= (A) (x, y) φ (B) (2 14) φ(t) = φ 1 (t) φ 2 (t). C = 0.03, 0.035, H X 1 (t) = H(X 2 (t)) 4, 5) τ X 1 (t) = X 2 (t + τ) 7) 8) Ott, Grebogi, Yorke 9) OGY Pyragas DFC 10) 11, 12, 13, 14, 15, 16) ẋ(t) = f(x(t), u(t)) u(t) 0 x(t) = x(t + T) u(t) x(t) x(t) OGY x d (n + 1) = f d (x d (n), u d (n)) c /(37)
31 x d u d (n) = K(x d (n) x d ) 214(a) K lim n x d (n) = x d DFC u(t) = K(x(t) x(t T)) OGY T x(t T) 214(b) DFC OGY DFC 14, 15) 214 9, 10) 11, 13) 11, 12, 13, 14, 15) Cellular Neural Network: CNN c /(37)
32 Chua Yang ) 1 M N 215 i j C(i, j) dx i j dt = x i j + A(i, j; k, l) y kl + B(i, j; k, l) u kl + z i j C(k,l) N r(i, j) C(k,l) N r(i, j) x i j, y i j, u i j C(i, j) y i j = f (x i j ) = ( x i j + 1 x i j 1 )/2 A(i, j; k, l), B(i, j; k, l) C(k, l) C(i, j) z i j C(i, j) N r (i, j) C(i, j) N r (i, j) = { C(k, l) : k i r, l j r } N r (i, j) M N x ij y ij j u ij z ij f(x ij) i A(i, j; k, l)ykl B(i, j; k, l)ukl N 1(i, j) 215 CNN A(i, j; k, l), B(i, j; k, l), z i j (i, j) CNN A(i, j; k, l), B(i, j; k, l) (2r + 1) 2 A(i, j; k, l), B(i, j; k, l) z i j 2 (2r + 1) CNN A(i, j; k, l), B(i, j; k, l), z i j u i j x i j (0) u i j x(t) R M N 1 c /(37)
33 f 18) u i j x(t) CNN lim t y(t) A(i, j; k, l) positive cell-linking 18) CNN 3 CNN ) 216 CNN CNN 4 Chua Yang CNN CNNCNN CNN CNN CNN ) c /(37)
34 21, 22, 23) p i (1 i p) 21, 22, 23, 24) x i (t n+1 ) = f i ( p j=1 w i j d=0 n k d f h i j( x j (t n d ) ) m + v i j j=1 d=0 n n ke d a j (t n d ) α kr d ( g i xi (t n d ) ) ) + Θ i (215) x i (t n ) t n n w i j j i v i j i j a j (t n d ) t n d j m i Θ i k f, k e, k r f i ( ) g i ( ) h i j ( ) k r α f i ( ) f i ( ) k f = k e = k r = α = 0 k r 0, α 0 f i ( ) k f = k e = k r = α = 0 23) (215) f i ( ) 1 η i (t n+1 ) 2 ξ i (t n+1 ) , 22, 23, ζ i (t n+1 ) 24) η i (t n+1 ) = k f η i (t n ) + ξ i (t n+1 ) = k e ξ i (t n ) + p ( w i j h i j x j (t n ) ) j=1 m v i j a j (t n ) j=1 d=0 (216) (217) ζ i (t n+1 ) = k r ζ i (t n ) αg i ( xi (t n ) ) + θ i (218) θ i Θ i (1 k r ) x i (t n+1 ) = f i ( ηi (t n+1 ) + ξ i (t n+1 ) + ζ i (t n+1 ) ) = f i ( yi (t n+1 ) ) (219) y i (t n+1 ) c /(37)
35 25, 26, 27) (215) k f = k e = k r k 21, 22) y(t n+1 ) = ky(t n ) αg( f (y(t n ))) + A(t n ) (220) A(t n ) = a(t n ) ka(t n 1 ) + θ(1 k) w i j 23) 24) 28) 29) 23) TSP QAP DNA 23, 30, 31, 32, 33, 34) TSP QAP 35, 36, 37, 38) Hopfield QAP 39, 40) 25, 26, 40, 41) 1) K.M. Cuomo and A.V. Oppenheim, Circuit implementation of synchronized chaos with applications to communications, Phys. Rev. Lett., vol.71, no.1, pp.65-68, ) H. Fujisaka and T. Yamada, Stability theory of synchronized motion in coupled oscillator systems, Prog. Theor. Phys., vol.69, no.1, pp.32-47, c /(37)
36 3) L.M. Pecora and T.L. Carroll, Synchronization in chaotic systems, Phys. Rev. Lett., vol.64, no.8, pp , ) N.F. Rulkov, M.M. Sushchik, L.S. Tsimring, and H.D.I. Abarbanel, Generalized synchronization of chaos in directionally coupled chaotic systems, Phys. Rev. E, vol.51, no.2, pp , ) L. Kocarev and U. Parlitz, Generalized synchronization, predictability, and equivalence of unidirectionally coupled dynamical systems, Phys. Rev. Lett., vol.76, no.11, pp , ) M.G. Rosenblum, A.S. Pikovsky, and J. Kurths, Phase synchronization of chaotic oscillators, Phys. Rev. Lett., vol.76, no.11, pp , ) M.G. Rosenblum, A.S. Pikovsky, and J. Kurths, From phase to lag synchronization in coupled chaotic oscillators, Phys. Rev. Lett., vol.78, no.22, pp , ) A. Pikovsky, M. Rosenblum, J. Kurths,,,, ) E. Ott, C. Grebogi, and J.A. Yorke, Controlling chaos, Phys. Rev. Lett., vol. 64, no.11, pp , ) K. Pyragas, Continuous control of chaos by self-controlling feedback, Phys. Lett. A, vol.170, no.6, pp , ) G. Chen and X. Dong, From chaos to order, World Scientific Pub. Co. Inc., ) B.R. Andrievskii and A.L. Fradkov, Control of chaos: methods and applications. I Methods, Automation and Remote Control, vol.64, no.5, pp , ) B.R. Andrievskii and A.L. Fradkov, Control of chaos: methods and applications. I Applications, Automation and Remote Control, vol.65, no.4, pp , ) K. Pyragas, Delayed feedback control of chaos, Phil. Trans. R. Soc. A, vol.364, no.1846, pp , ) E. Schöll and H.G. Schuster, Handbook of chaos control, Wiley-Vch, ),,, ) L.O. Chua and L. Yang, Cellular neural networks: theory and applications, IEEE Trans. Circuits Syst., vol.35, no.10, pp , ) L.O. Chua, CNN: a paradigm for complexity, World Scientific, Singapore, ) L. Kék, K. Karacs and T. Roska, Cellular wave computing library: templates, algorithms, and programs version 2.1 edition, MTASZTAKI, Budapest, ) K. Aihara and G. Matsumoto, Chaotic oscillations and bifurcations in squid giant axons, Chaos (A. V. Holden ed.), Manchester University Press and Princeton University Press, pp , ) K. Aihara, Chaotic neural networks, Bifurcation Phenomena in Nonlinear System and Theory of Dynamical Systems (H. Kawakami ed.), World Scientific, pp , ) K. Aihara, T. Takabe, and M. Toyoda, Chaotic neural networks, Phys. Lett. A, vol.144, pp , ) K. Aihara, Chaos engineering and its application to parallel distributed processing with chaotic neural networks, Proc. IEEE, vol.90, no.5, pp , ) M. Adachi and K. Aihara, Associative dynamics in a chaotic neural network, Neural Networks, vol.10, no.1, pp.83-98, ) Y. Horio and K. Aihara, Chaotic neuro-computer, Chaos in Circuits and Systems (G. Chen and T. Ueta eds.), World Scientific Publishers, pp , ) Y. Horio and K. Aihara, Neuron-synapse IC chip-set for large-scale chaotic neural networks, IEEE Trans. Neural Networks, vol.14, no.5, pp , ) R. Herrera, K. Suyama, Y. Horio and K. Aihara, IC implementation of a switched-current chaotic neuron, IEICE Trans. Fundamentals, vol.e82-a, no.9, pp , ) J. Kuroiwa, N. Masutani, S. Nara, and K. Aihara, Sensitive response of a chaotic wandering state to c /(37)
37 memory fragment inputs in a chaotic neural network model, Int. J. of Bifurcation and Chaos, vol.14, no.4, pp , ) K. Kaneko and I. Tsuda, Chaotic Itinerancy, Chaos, vol.13, no.3, pp , ) L. Chen and K. Aihara, Chaotic simulated annealing by a neural network model with transient chaos, Neural Networks, vol.8, no.6, pp , ) I. Tokuda, K. Aihara, and T. Nagashima, Adaptive annealing for chaotic optimization, Phys. Rev. E, vol.58, no.4, pp , ) R. Nanba, M. Hasegawa, T. Nisita, and K. Aihara, Optimization using chaotic neural networks and its application to lighting design, Control and Cybernetics, vol.31, no.2, pp , ) T. Kimura, and T. Ikeguchi, A new algorithm for packet routing problems using chaotic neurodynamics and its surrogate analysis, Neural Computing and Applications, vol.16. pp , ) T. Matsuura and T. Ikeguchi, Refractory effects of chaotic neurodynamics for finding motifs from DNA sequences, Proc. of Int. Conf. Intelligent Data Engineering and Automated Learning, pp , ) M. Hasegawa, T. Ikeguchi, and K. Aihara, Combination of chaotic neurodynamics with the 2-opt algorithm to solve traveling salesman problems, Phys. Rev. Lett., vol.79, no.12, pp , ) M. Hasegawa, T. Ikeguchi, and K. Aihara, Exponential and chaotic neurodynamical tabu searches for quadratic assignment problems, Control and Cybernetics, vol.29, no.3, pp , ) M. Hasegawa, T. Ikeguchi, and K. Aihara:, Solving large scale traveling salesman problems by chaotic neurodynamics, Neural Networks, vol.15, no.2, pp , ) M. Hasegawa, T. Ikeguchi, K. Aihara, and K. Itoh, A novel chaotic search for quadratic assignment problems, European J. of Operational Research, vol.139, pp , ) T. Ikeguchi, K. Sato, M. Hasegawa, and K. Aihara, Chaotic optimization for quadratic assignment problems, Proc. IEEE Int. Symp. on Circuits and Syst., vol.3, pp , ) Y. Horio, T. Ikeguchi, and K. Aihara, A mixed analog/digital chaotic neuro-computer system for quadratic assignment problems, Neural Networks, vol.18, no.5-6, pp , ) Y. Horio, and K. Aihara, Analog computation through high-dimensional physical chaotic neurodynamics, Physica-D, vol.237, no.9, pp , c /(37)
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