5 papers
No persistent circadian oscillator at genome resolution: pseudo-coherence in gut microbiome dynamics
V. Troude, L. Takayasu, R. Maskawa +4
Diurnal rhythms in the gut microbiome are commonly read as evidence of host-driven entrainment or of microbial oscillators that synchronise to a common clock. We reanalyse hourly g…
Linking Opinion Dynamics and Emotional Expression in Online Communities: A Case Study of COVID-19 Vaccination Discourse in Japan
Qianyun Wu, Yukie Sano, Hideki Takayasu +1
Social media discourse on COVID-19 vaccination provides a valuable context for studying opinion formation, emotional expression, and social influence during a global crisis. While…
Stable Emotional Co-occurrence Patterns Revealed by Network Analysis of Social Media
Qianyun Wu, Orr Levy, Yoed N. Kenett +4
Examining emotion interactions as an emotion network in social media offers key insights into human psychology, yet few studies have explored how fluctuations in such emotion netwo…
Do Railway Commuters Exhibit Consistent Route Choice Rationality Across Different Contexts and Time? Evidence from Tokyo metropolitan Commutes
Yixuan Y Zheng, Hideki Takayasu, Misako Takayasu
In urban railway systems, if every commuter were perfectly rational, concentrated demand on optimal routes would undermine system performance. Understanding the actual degree of co…
New type of chaotic solutions found in Gravity model of network transport
Hajime Koike, Hideki Takayasu, Misako Takayasu
The gravity model is a mathematical model that applies Newton's universal law of gravitation to socio-economic transport phenomena and has been widely used to describe world trade,…