41 citations · 154 across the 15 of their papers we have counts for
15 papers
Cross-country structure of a sexual contact network derived from a commercial-sex review platform
Hiromu Ito, Keiko Shigeta, Toshiaki R. Asakura +1
Sexual contact networks are fundamental to understanding the spread of sexually transmitted infections (STIs), yet their large-scale structure remains difficult to observe because…
Solvable epidemic model on degree-correlated networks
Satoru Morita
Disease and information spread over social and information networks. Understanding the spread phenomena in networks requires paying attention not only to the degree distribution bu…
Type reproduction number for epidemic models on heterogeneous networks
Satoru Morita
Infection can spread easily on networks with heterogeneous degree distribution. Here, we considered targeted immunization on such networks, wherein a fraction of individuals with t…
Power-law exponent in multiplicative Langevin equation with temporally correlated noise
Satoru Morita
Power-law distributions are ubiquitous in nature. Random multiplicative processes are a basic model for the generation of power-law distributions. It is known that, for discrete-ti…
Power law in random multiplicative processes with spatio-temporal correlated multipliers
Satoru Morita
It is well known that random multiplicative processes generate power-law probability distributions. We study how the spatio-temporal correlation of the multipliers influences the p…
Six Susceptible-Infected-Susceptible Models on Scale-free Networks
Satoru Morita
Spreading phenomena are ubiquitous in nature and society. For example, disease, rumor, and information spread over underlying social and information networks. It is well known that…
Evolutionary game on networks with high clustering coefficient
Satoru Morita
This study investigates the influence of lattice structure in evolutionary games. The snowdrift games is considered in networks with high clustering coefficients, that use four dif…
Disadvantages of Preferential Dispersals in Fluctuating Environments
Satoru Morita, Jin Yoshimura
It has not been known whether preferential dispersal is adaptive in fluctuating environments. We investigate the effect of preferential and random dispersals in bet-hedging systems…
Analytical solution of stochastic model of risk-spreading with global coupling
Satoru Morita, Jin Yoshimura
We study a stochastic matrix model to understand the mechanics of risk-spreading (or bet-hedging) by dispersion. Such model has been mostly dealt numerically except for well-mixed…
Analytical Solution of Metapopulation Dynamics in Stochastic Environment
Satoru Morita, Jin Yoshimura
We study a stochastic linear discrete metapolulation model to understand the effect of risk spreading by dispersion. We calculate analytically the stable distribution of population…
Population Uncertainty in Model Ecosystem: Analysis by Stochastic Differential Equation
Satoru Morita, Kei-ichi Tainaka, Hiroyasu Nagata +1
Perturbation experiments are carried out by contact process and its mean-field version. Here, the mortality rate is increased or decreased suddenly. It is known that the fluctuatio…
Extended Pair Approximation of Evolutionary Game on Complex Networks
Satoru Morita
We investigate how network structure influences evolutionary games on networks. We extend the pair approximation to study the effects of degree fluctuation and clustering of the ne…
Crossovers in ScaleFree Networks on Geographical Space
Satoru Morita
Complex networks are characterized by several topological properties: degree distribution, clustering coefficient, average shortest path length, etc. Using a simple model to genera…
Collective motions in globally coupled tent maps with stochastic updating
Satoru Morita, Tsuyoshi Chawanya
We study a generalization of globally coupled maps, where the elements are updated with probability . When is below a threshold , the collective motion vanishes and the…
Bifurcations in Globally Coupled Chaotic Maps
Satoru Morita
We propose a new method to investigate collective behavior in a network of globally coupled chaotic elements generated by a tent map. In the limit of large system size, the dynamic…